The following information is current as of March 22, 2017. The Contractor should request a utility status update at the project pre-construction conference, and/or prior to starting work. Contacts listed below are from the City of Lincoln Website (https://lincoln.ne.gov/city/pworks/engine/dconst/gpp/pdf/contacts.pdf?2015-05-13), updated May 13, 2015.

Utilities known to have facilities in the project area:

Private Utilities

Initial investigations and coordination with the known private utilities in the vicinity have determined that there are no conflicts anticipated via the construction of this project.

Public Utilities

Underground Storm Water –Storm Sewer culverts have been identified in several locations along the water main alignment. The proposed 16-inch main will cross dual 36-inch storm sewers at approximately Station 119+85, and dual 54-inch storm sewers at station 131+70, which cross Rokeby Road from north to south. Contractor shall make himself aware of the requirements of the Lancaster County permit to occupy ROW.

Contractor shall notify Lancaster County, a minimum of 24-hours in advance, prior to completing any work near existing storm water structures:

Bob Jacobs (402) 441-7797

STATUS OF RIGHT-OF-WAY

No additional Right-of-Way or easements will be required to perform construction as part of this project.

TECHNICAL PROVISIONS

The following Special Provisions amend or supplement the City of Lincoln Standard Specifications for Municipal Construction. All provisions which are not so amended or supplemented remain in full force or effect.

DIVERSION AND CARE OF WATER

Methods and details for care and diversion of water are not detailed on the plans. Full responsibility for the diversion and care of water from any source, including, but not limited to, direct rainfall, groundwater, surface runoff, and sources outside of the construction area shall be borne by the Contractor until completion of work under this contract. The Contractor shall provide all materials, labor, and equipment, and perform all work necessary to facilitate construction and to protect the work in progress from damage by water. The Contractor shall make his own investigation and determination of existing and anticipated conditions concerning care of water. Plans for diversion and care of water during construction shall be submitted to the City Project Manager, for information only, within ten calendar days after receipt of Notice to Proceed, and shall show location, material, and method for dewatering the work area and disposal of the water. Direct payment will not be made for diversion and care of water. Work associated with diversion and care of water shall be considered incidental to the project.

16-INCH RESTRAINED JOINT WATER MAIN

16-Inch Restrained Joint Water Main shall conform to AWWA C900, Dimension Ratio (DR) 21, as manufactured by Certainteed or approved equal. 16-Inch Restrained Joint Water Main shall be measured and paid for at the contract unit price bid per linear foot. Such payment shall be full compensation for all materials, tools, equipment, and labor, excavation, backfill, sod, clean-up, and incidentals necessary to install the pipe in a manner acceptable to the City’s Project Manager.

24-INCH RESTRAINED JOINT WATER MAIN

24-Inch Restrained Joint Water Main shall conform to ANSI/AWWA C151/A21.51, Thickness Class 52 minimum. 24-Inch Restrained Joint Water Main shall be measured and paid for at the contract unit price bid per linear foot. Such payment shall be full compensation for all materials, tools, equipment, and labor, excavation, backfill, sod, clean-up, and incidentals necessary to install the pipe in a manner acceptable to the City’s Project Manager. The bid item for the 24-inch Restrained Joint Water Main shall include tying into the existing cathodic protection cable, and extending it for the full length of the 24-inch ductile iron main in accordance with these Specifications.

REMOVE UNSUITABLE MATERIALS

It is anticipated that the Contractor may be required to remove materials, not specifically detailed on the plans, due to material being encountered that is determined to be unsuitable to provide an acceptable subgrade for utility construction. Unsuitable material shall be removed from the site and disposed of by the Contractor.

Payment for removal and disposal of unsuitable material, including all costs associated with furnishing, placement, and compaction of approved backfill material to replace unsuitable material, as authorized by the City Project Manager, shall be paid for in accordance with the price bid per cubic yard for the pay item “Remove Unsuitable Materials”. Such payment shall be full compensation for removal and disposal of the unsuitable material including furnishing approved

borrow material meeting the requirements outlined in the geotechnical report and backfilling in accordance with the requirements outlined in the project geotechnical report and these Special Provisions.

Only quantities approved by the City Project Manager shall be considered for payment. Overruns due to over excavation not authorized by the City Project Manager shall not be considered for payment. The limits of unsuitable material removal for payment at utility trenches shall be calculated based upon the area between the proposed excavation line shown on LSP-185: Pipe Bedding and the actual depth of the over excavation limit.

BORE WITHOUT CASING

Boring for water main shall be measured and paid for at the contract unit price bid per linear foot for BORE WITHOUT CASING. Such payment shall be full compensation for all labor, equipment, tools, and incidentals necessary to produce the bore hole ready to receive the water main. The pipe to be placed in the bore hole shall be paid for as provided in the Water Main Unit Price.

INSTALL HP TRM

Installation of High Performance Turf Reinforcement Mat shall be paid for at the contract unit price per square yard (SY) for TRM, as measured by the visible surface area after installation is complete in accordance with City of Lincoln Standard Specifications, latest edition. This price shall be full compensation for preparing, transporting, delivering and placing the materials, and for all labor, tools, equipment and incidentals necessary to complete the installation and maintenance of the Work. The Turf Reinforcement Mat was previously purchased by, and is currently being stored by the Rokeby Road Improvements Contractor.

Coordinate pickup of the TRM via Olsson Associates by contacting:

Brian Jueneman [email protected] 402-458-5617 (O) 402-304-6571 (C)

REMOVE AND RESET TRIANGULAR SEDIMENT BARREIR

Remove and reset Triangular Sediment Barrier shall be paid for at the contract unit price per each (EA) of the quantities identified on the plans. Such work shall include the initial removal and storage of the Triangular Sediment Barriers currently in place for the Rokeby Road Improvements project as needed to install the new water main, and reinstalling per City of Lincoln Standard Specifications. The Contractor shall be responsible for maintaining the Triangular Sediment Barriers during construction, and removing and disposing of them in accordance with the requirements of the City of Lincoln Standard Specifications and the SWPPP upon completion of construction.

SEEDING

The Contractor shall utilize hydraulic seeding at all disturbed areas where an erosion control blanket is not installed. This would include backslopes, foreslopes, ditches, and for restoration of areas used for temporary stockpiles or staging. Hydraulic seeding shall be in accordance with the requirements outlined in Chapter 30 of the City of Lincoln Standard Specification for Municipal Construction. Additional payment shall not be made for the use of hydraulic seeding and this shall be included in the price bid per acre for the respective seeding.

Chapter 30 of the City of Lincoln Standard Specifications for Municipal Construction is amended to incorporate the following seed mixture for the Type “F” Seeding on this project:

Species-Variety* Minimum Purity (%) LBS of PLS/Acre Brome* 90 10 Switchgrass* 70 2.25 Hairy Vetch* 85 2.25+Inoculation Red Clover* 90 2.25+Inoculation Oats or Wheat (Wheat in 90 20 Fall)* *Indicates seed varieties furnished will be all locally adapted

The fertilizer and zinc sulfate requirements for the Type “F” Seed and seeding period shall be as shown in the City of Lincoln Standard Specifications.

LINCOLN STANDARD PLANS

City of Lincoln Standard Plans are part of the bid documents for this project. The standard plans are posted on the City of Lincoln Website: https://lincoln.ne.gov/city/pworks/engine/dconst/standard/lsp/ and the contractor shall be responsible for making himself aware of the plans in preparing their bid for the project.

STORMWATER POLLUTION PREVENTION PLAN (SWPPP)

The Contractor shall comply with the requirements outlined in the Stormwater Pollution Protection Plan (SWPPP) that is included in Attachment 4 of these specifications. Furthermore, the Contractor shall provide the City Project Manager with electronic copies (PDF) of all inspection reports and other report or record keeping data required by the SWPPP. Electronic copies of the inspection reports shall be submitted promptly to the County’s Project Manager following the completion of the inspections, and no later than seven calendar days following the required bi-weekly site review or storm event requiring the inspection.

STAGING OF EQUIPMENT AND MATERIALS 1. The Contractor shall coordinate staging of equipment and materials with the General Contractor at the LES site and the City Project Manager.

PROJECT PHASING

The Contractor will be responsible for meeting the following construction phasing requirements:

The Contractor will have until November 1, 2017 to achieve Substantial Completion of the project, defined as completing installation of the new water main and achieving passing pressure and bacteriological tests. The Contractor shall have until December 1, 2017 to complete all phases of the project, with the anticipated start of construction date being August 21, 2017.

LIQUIDATED DAMAGES

Liquidated damages shall be accrued on any location not completed within the allotted time frame for each, and on all work sites not completed by the overall completion date, as specified in the “PROJECT PHASING” portion of these Special Provisions.

INSTALLATION OF VALVE AND HYDRANTS

Chapter 23.08 Installation of Valves and Hydrants Section (A) General of the 2017 City of Lincoln Standard Specification for Municipal Construction is hereby amended as follows:

The following language is hereby added:

Fire hydrant barrel lengths shown on the plans are estimated and may not be sufficient dimensions for actual field conditions due to conflicting utilities and field modifications of water main profile. Contractors shall confirm actual hydrant barrel length required prior to construction so that hydrants are constructed in accordance to the LSP. This work shall be subsidiary to the water main construction.

SALES TAX

This language modifies and clarifies Section VI> Paragraph S of the General Conditions and Requirements of the City of Lincoln’s 2006 Standard Specification for Municipal Construction.

Sales and Uses Tax

Any portion of this project used for providing water service, such as pipe and fittings for water mains, is subject to sales and use taxes.

The remainder of this project is exempt from sales and use taxes.

No one shall issue the Purchasing Agent Appointment (PAA) certificate forms except the Purchasing Agent. When the contractor requests these forms they need to inform the Purchasing Agent what materials they are buying and for which project (identify with project description and number).

ATTACHMENTS

The following appendices are attached to these special provision and are to be considered as part of the contract documents:

 Cathodic Protection Specifications-Attachment 1  Cathodic Protection Detail Drawings-Attachment 2  Geotechnical Report-Attachment 3  Storm Water Pollution Prevention Report Document-Attachment 4  Turf Reinforcement Mat Installation-Attachment 5

ATTACHMENT 1: CATHODIC PROTECTION SPECIFICATIONS

CATHODIC PROTECTION

1. GENERAL

The Work covered in this chapter includes the materials, and installation labor and equipment for cathodic protection of ductile iron pipe installed with field-applied polyethylene encasement, prestressed or bar-wrapped concrete cylinder pipe, and welded steel pipe with a factory-applied coating and/or tape-wrapping.

2. RELATED ITEMS SPECIFIED ELSEWHERE

City of Lincoln Standard Specifications Chapter 23 – Water Mains

3. CONTRACTOR SUPPLIED MATERIALS

American Society for Testing and Materials (ASTM) – Applicable testing methods and materials NACE International Standard Practice SP0169 (2002) – Control of External Corrosion on Underground or Submerged Metallic Piping Systems National Electrical Code (NEC), latest edition National Electrical Manufacturers Association (NEMA) – Standards and Specifications Underwriters Laboratories, Inc. (UL) – Standards for safety

4. SUBMITTALS

Submit manufacturer’s specifications, recommendations, and installation instructions for each product item. Manufacturer’s product submittals shall be incorporated into a single document to demonstrate that the items have been properly coordinated and will function properly as a unit. A notation shall be made on each shop drawing submitted as to the item’s specific use either by a particular type number referenced in the Contract Documents, or by a description of the item’s specific locations.

5. BASIS OF PAYMENT

Include cost to furnish all materials, equipment, and labor necessary to install cathodic protection described in this Chapter in the unit price bid for “24-INCH RESTRAINED JOINT WATER MAIN” on the Bid Form on the Proposal.

6. WARRANTY ON CONTRACTOR-PROVIDED MATERIALS

All Contractor-provided materials shall be guaranteed for a period of one year. The one- year period shall commence at the time of the final installation of all components by the Contractor and after the system has been tested and properly adjusted for operation by Lincoln Water System’s Corrosion Engineer.

7. ELECTRICAL CONTINUITY BOND CABLES

A. High molecular weight polyethylene insulated stranded copper cable shall be used for continuity bond cables installed across pipe joints of mechanically-coupled pipe. Insulation shall conform to ASTM D1248 – Specification for Plastic Molding and Extrusion Materials, Type 1, Class C, Grade 5. 1. Pipe joint continuity bond cables shall be sized as follows: a. Wire Gauge (Pipe Size < 24”): No. 4 b. Wire Gauge (Pipe Size ≥ 24”): No. 2 c. No. of Strands: 7 d. Outer Jacket: 0.110” thickness e. Length: 18” f. Number of Bonds: 2 across each pipe joint

8. WIRE, CABLE, AND SPLICES

A. Anode Header Cable and Structure Return Connection (Direct Burial) 1. High molecular weight polyethylene insulated stranded copper cable shall be used for all underground portions of the cathodic protection system’s anode header cable and structure return connection circuits. Insulation shall conform to ASTM D1248 – Specification for Plastic Molding and Extrusion Materials, Type 1, Class C, Grade 5. 2. The DC cables shall be sized as follows: a. No. of Strands: 7 b. Outer Jacket: 0.110” thickness c. Anode Header Cable: No. 8 AWG (red) d. Structure Return Connection: No. 8 AWG (blue) B. Test Wires for Cathodic Protection System Monitoring 1. Oil and gas resistant insulated/jacketed stranded copper wire shall be used for structure connections as part of the system’s monitoring circuits. Insulation shall conform to ASTM Standard UL-83 for Thermoplastic Insulated Wires. 2. The test wires shall be sized as follows: a. No. of Strands: 19 b. Primary Insulation: 0.015” thick thermoplastic c. Outer Jacket: 0.004” thick nylon (structure color code as shown on drawings) C. Compression Crimp Splice Connectors 1. All underground spliced connections used within the DC cathodic protection circuit shall be made through the use of copper compression crimp connectors. a. The proper size connectors shall be used in accordance with the manufacturer’s recommendations. b. Connectors shall be crimped with a hand tool capable of delivering a minimum of 12 tons of compressive force. D. Splice Encapsulation 1. All aboveground spliced connections used within the DC cathodic protection circuit shall be sealed with rubber and plastic tape contained within a waterproof coating.

9. EXOTHERMIC WELDS AND CONNECTION DEVICES

A. All connections used within the DC cathodic protection system circuit shall be by exothermic welds. The proper size welders, metal charges, and wire sleeves shall be used in accordance with the manufacturer’s recommendations. 1. Subject to meeting the requirements of this specification, acceptable manufacturer’s products which may be incorporated into the work include the following or an approved equal: a. Continental Industries (918-627-5210), Model Therm-O-Weld. B. Coating of Wire and Cable Connections to Structures 1. A pre-fabricated plastic sheet with an igloo-shaped dome and entry tunnel filled with an oil- and gas-resistant elastomeric rubber and a primer-less elastomeric tape for bonding directly to the structure. 2. Subject to meeting the requirements of this specification, acceptable manufacturer’s products which may be incorporated into the work include the following or an approved equal: a. Continental Industries (918-627-5210), Model Therm-O-Cap PC. b. The Tapecoat Company (800-758–6041), Model Royston Handy Cap IP.

10. INSTALLATION OF CATHODIC PROTECTION MATERIALS - GENERAL

A. Examine the areas and conditions under which cathodic protection materials are to be installed, and notify Engineer in writing of conditions detrimental to the proper and timely completion of the Work. Do not proceed with the Work until unsatisfactory conditions have been corrected. B. Drawings: Install all cathodic protection components and equipment according to the following CP Installation Detail Drawings included hereinafter in this Section. 1. Drawing No. CP-01: Pipe Continuity Bonding for Various Pipe Materials. 2. Drawing No. CP-02: Exothermic Weld Procedure for Various Pipe Materials (Horiz. Only) 3. Drawing No. CP-03: Insulating Rubber & Tape Splice for Sacrificial Anode Cable Connections

11. INSTALLATION OF ELECTRICAL CONTINUITY BOND CABLES

A. General 1. Inspect each cable to ensure a continuous electrical conductor with no cuts or tears in the cable insulation. 2. Attach cable to water main by the exothermic welding process. 3. Cover all exothermic welds with a pre-fabricated igloo-shaped domed plastic elastomeric rubber cover as described in this specification. B. Method: 1. Perform exothermic welding of bond cables in accordance with the manufacturer’s instructions. 2. Do not use any exothermic weld equipment that is damp or wet. C. Post-Installation Inspection: 1. Inspect electrical continuity bond cables by visually examining each exothermic weld connection for strength and suitable coating prior to backfilling. 2. If, in the opinion of the Engineer, the exothermic weld is deficient, the Contractor shall remove and replace the weld at no expense to the Lincoln Water System. D. Backfilling of Bond Cables:

1. Perform backfilling that will prevent damage to the bond cables and connections to the water main. 2. If construction activity damages a bond cable, the Contractor shall remove and replace the bond cable at no expense to the Lincoln Water System.

12. INSTALLATION OF WIRE, CABLE, AND SPLICES

A. Install underground wires, cables, and connections at a minimum 24 inches below final grade with a minimum separation of 6 inches from other underground structures. B. Crimp Connectors: 1. All spliced connections will be made by the use of copper compression crimp connectors. 2. Contractor must furnish a hand tool capable of generating a minimum of 12 tons of compressive force to install crimp connectors. Use only tools compatible with Burndy copper compression taps. C. Seal splices against water penetration as follows: 1. Clean and then wrap with a minimum of two half-lapped layers of rubber electrical tape. 2. Apply two half-lapped layers of plastic electrical tape. 3. Cover with a fast-drying electrical sealant.

13. INSTALLATION OF EXOTHERMIC WELDS AND CONNECTION DEVICES

A. All exothermic welding shall be performed in accordance with the manufacturer’s recommendations for welding equipment, weld metal charge size, and applicability to the structure. Do not use exothermic weld equipment if the graphite mold is wet. B. Structure Surface Preparation 1. All bare metal shall be free of dust, dirt, grease, oil and other foreign matter. 2. Practical removal shall be by either power or hand wire brushing. 3. Weld areas shall be cleaned of all welding lag, spatter, and scale. 4. Grinding or filing shall remove sharp edges or burrs. 5. The weld areas shall be no more than warm to the touch before applying the mastic. 6. Moisture, if present, shall be removed before applying coal tar mastic and weld cap. C. Installation of Elastomeric Cover over Exothermic Welds 1. Clean the pipe surface which is to be covered by removing all moisture, dirt, grease and other contaminants 2. Remove the release paper from the back of the mastic pad. Avoid touching the exposed elastomeric tape. 3. Apply the mastic pad to the structure by firmly pressing on all edges making sure that the tunnel area of the plastic dome completely covers the lead wire entering the exposed copper of the connection. 4. Push the dome of the plastic weld cap firmly over the exothermic weld area and the wire entering the weld cap.

14. FIELD QUALITY CONTROL

A. Contractor’s Quality Control System 1. The Contractor shall implement a quality control system to ensure the cathodic protection system components conform to the applicable plans and specifications established by the Contract Documents.

2. The quality control system shall ensure that standards for materials, workmanship, construction, and functional performance are adhered to throughout the course of the Work. 3. The Contractor’s superintendent shall be used to monitor the Contractor’s quality control system.

15. POST-INSTALLATION TESTING OF CATHODIC PROTECTION SYSTEMS

A. General: Lincoln Water System will provide services of a NACE-certified Cathodic Protection Specialist for periodic field inspections and final commissioning services of cathodic protection systems installed for all pipe materials in accordance with the following NACE International reference standard and test method: 1. NACE International Standard Practice SP0169 (2002). 2. NACE International Standard Test Method TM0497 (2002). B. Energizing: Assist Lincoln Water System and Lincoln Water System’s Cathodic Protection Specialist during initial energizing of the cathodic protection systems.

ATTACHMENT 2: CATHODIC PROTECTION DETAIL DRAWINGS

Ductile Iron Pipe Bonding Size: #2 AWG 7-strand copper Insulation: HMWPE Cable Length: 18” (min.) Number per Pipe Joint: 2 Location: At top of pipe Method: Exothermic weld Weld Coating: Elastomeric Mastic Cap Push-on Ductile Iron Pipe

Pre-Stressed Concrete Cylinder Pipe Bonding Size: #2 AWG 7-strand copper Insulation: HMWPE Cable Length: 18” (min.) Number per Pipe Joint: 2 Location: At steel bonding tabs Method: Exothermic weld Weld Coating: Brush-Applied Mastic Coating Pre-Stressed Concrete Cylinder Pipe

Coated Steel Pipe Bonding Size: #2 AWG 7-strand copper Insulation: HMWPE Cable Length: 18” (min.) Number per Pipe Joint: 2 Location: To top of pipe Method: Exothermic weld Weld Coating: Elastomeric Mastic Cap Steel Pipe w/Rolled Groove Rubber Gasket Joint

Pipe Continuity Bonding Scale: None for Various Pipe Materials Drawing #: CP-01 Standard CP Installation Detail Date: 2011-Dec-23 Lincoln Water System - Lincoln, NE Rev. 0 1. Clean a small square area at the top 2" dead center of the pipe. Use a grinder 2" or flat file to expose bright shiny metal.

2. Strip off about 1" of insulation exposed copper from stranded/solid copper wires or stranded copper cables. 1" insulation

3. Slip on a copper weld sleeve to #10 AWG wire and smaller test wire and to #2 AWG or #4 AWG stranded copper bond cables. sleeve

weld slag 4. Place the weld furnace directly over the copper wire or cable and while holding firmly in place, ignite flash powder with a flint igniter. After cooling, remove all slag from the top of the weld metal. pipe wall

exo-weld metal

5. Apply cold-applied mastic/cap to cover all exposed copper and bare pipe metal prior to backfilling.

Do not use exothermic weld equipment if the graphite furnace is wet. Follow manufacturer's specific instructions for storage, handling, and use. Exothermic Weld Procedure Scale: None for Various Pipe Materials (Horiz. Only) Drawing #: CP-02 Standard CP Installation Detail Date: 2011-Dec-23 Lincoln Water System - Lincoln, NE Rev. 0 Anode Lead Wire

Anode Header Cable

5" Area of sealant

Copper Compression Crimp 1" to expose conductors

Crimp Splice Procedure

Remove approximately 1” of cable insulation to expose clean copper conductors. Join the conductors by inserting them equidistance into the compression connection sleeve. Crimp conductors firmly in place using a crimping tool that requires a complete crimp before the tool can be removed. A minimum of 2 equally-spaced crimp indents is required. Test the crimped connection by pulling on the cables.

Suggested Splice Sealing Procedure

Roughen the cable insulation 2” beyond the end of the exposed conductors. Ensure the entire surface over which the tape will be applied is clean using a lint-free cloth. Do not use solvents. Fill voids with insulating putty tape as required. Apply a high-voltage rubber tape half lapped over all bare conductors. Tape should be tensioned as recommended by the manufacturer. Half-lap tape to produce a uniform buildup to 1-1/2 times cable diameter over the body of the splice with ends tapered approximately 1 inch over the original jacket. Cover rubber tape with two layers of vinyl pressure-sensitive tape one-half lapped. Coat the entire tape wrap with a brush-applied electrical sealant.

Insulated Rubber & Tape Splice for Scale: None Sacrificial Anode Cable Connections Drawing #: CP-03 Standard CP Installation Detail Date: 2011-Dec-23 Lincoln Water System - Lincoln, NE Rev. 0 Test Station Post*

Trench Backfill Insulated Copper Test Stn. Wires n=wire code (See Dwg. CP-04.B)

Pipe Bedding

Undisturbed Earth Elevation

Limit of Excavation

Test Station Post* Exothermic Weld Connection(s)

2 3

36" max.

8

Reference Electrode Plan View

* Install post-type test station within flush enclosure where specified Potential Test Station Scale: None (Drawing Code "PTS") Drawing #: CP-04.A Standard CP Installation Detail Date: 2011-Dec-23 Lincoln Water System - Lincoln, NE Rev. 0 CLEAR Polycarbonate Terminal Board w/GREEN screw-on cover (not shown) 3 2 Front Side: 1/4-20 Binding Posts

Backside:1/4-20 hex nuts on 1/4-20 x 1" screws w/lock washer & fiber washer 6 5

8 #12 AWG (Blue) to New Water Main

#14 AWG (Yellow) to Reference Electrode

Locking Ring

Connector Ring

3" (nominal) White PE Pipe

PTS Terminal Board Installation Details Scale: None Structure Connections & Color Codes Drawing #: CP-04.B Standard CP Installation Detail Date: 2011-Dec-23 Lincoln Water System - Lincoln, NE Rev. 1 Test Station Post*

Trench Backfill Insulated Copper Test Stn. Wires n=wire code (See Dwg. CP-09) Isolating Spacer 36"

Casing End Seal Pipe Bedding

Undisturbed Earth Elevation

Exothermic Weld Limit of Excavation Connection(s)

Test Station Post*

5 2 6 3

36" max. Casing Sleeve 8

Reference Electrode Plan View

* Install post-type test station within flush enclosure where specified Casing Test Station Scale: None (Drawing Code "CTS") Drawing #: CP-05.A Standard CP Installation Detail Date: 2011-Dec-23 Lincoln Water System - Lincoln, NE Rev. 0 Test Station Post*

Trench Backfill Insulated Copper Test Stn. Wires n=wire code (See Dwg. CP-05.B) Isolating Spacer 36"

Casing End Seal Pipe Bedding

Undisturbed Earth Elevation

Exothermic Weld Limit of Excavation Connection(s)

Test Station Post*

5 2 6 3

36" max. Casing Sleeve 8

Reference Electrode Plan View

* Install post-type test station within flush enclosure where specified Casing Test Station Scale: None (Drawing Code "CTS") Drawing #: CP-05.A Standard CP Installation Detail Date: 2011-Dec-23 Lincoln Water System - Lincoln, NE Rev. 0 Test Station Post*

Trench Backfill Insulated Copper Test Stn. Wires n=wire code (See Dwg. CP-09)

36"

Ex. Water Main New WM

Pipe Bedding

Undisturbed Earth Elevation

Limit of Excavation

Test Station Post*

3 2 6 5 36" max. Buried Electrical Isolator 8

Reference Electrode Plan View

* Install post-type test station within flush enclosure where specified Isolation Test Station (w/o Tapping Tee) Scale: None (Drawing Code "ITS") Drawing #: CP-06.A Standard CP Installation Detail Date: 2011-Dec-23 Lincoln Water System - Lincoln, NE Rev. 0 Test Station Post*

Trench Backfill Insulated Copper Test Stn. Wires n=wire code (See Dwg. CP-06.B)

36"

Ex. Water Main New WM

Pipe Bedding

Undisturbed Earth Elevation

Limit of Excavation

Test Station Post*

3 2 6 5 36" max. Buried Electrical Isolator 8

Reference Electrode Plan View

* Install post-type test station within flush enclosure where specified Isolation Test Station (w/o Tapping Tee) Scale: None (Drawing Code "ITS") Drawing #: CP-06.A Standard CP Installation Detail Date: 2011-Dec-23 Lincoln Water System - Lincoln, NE Rev. 0 Test Station Inside Flush Enclosure

Trench Backfill Insulated Copper Test Stn. Wires n=wire code (See Dwg. CP-07.B) Ex. Foreign Pipeline w/min 18" sep. to WM

12" separation

New Water Main

Pipe Bedding Elevation

Limit of Excavation Exothermic Weld Flush Connection(s) Enclosure

8 2 3

Reference Electrode installed

directly under foreign pipeline Existing Foreign Pipeline Plan View

Foreign Crossing (Over) Test Station Scale: None (Drawing Code "FTS") Drawing #: CP-07.Ao Standard CP Installation Detail Date: 2011-Dec-23 Lincoln Water System - Lincoln, NE Rev. 0

Test Station Inside Flush Enclosure

Trench Backfill Insulated Copper Test Stn. Wires n=wire code (See Dwg. CP-07.B)

New Water Main

12" separation

Pipe Bedding

Undisturbed Earth

Existing Foreign Pipeline (depth varies)

Elevation

Limit of Excavation Exothermic Weld Flush Connection(s) Enclosure

2 8 3

Reference Electrode installed directly over foreign pipeline Existing Foreign Pipeline Plan View

Foreign Crossing (Under) Test Station Scale: None (Drawing Code "FTS") Drawing #: CP-07.Au Standard CP Installation Detail Date: 2011-Dec-23 Lincoln Water System - Lincoln, NE Rev. 0 CLEAR Polycarbonate Terminal Board w/WHITE screw-on cover (not shown) 3 2 Front Side: 1/4-20 Binding Posts

Backside:1/4-20 hex nuts on 1/4-20 x 1" screws w/lock washer & fiber washer

8 #8 AWG (Blue) to New Water Main

#12 AWG (Blue) to New Water Main

#14 AWG (Yellow) to Reference Electrode

Connector Ring

3" (nominal) White PE Pipe

FTS Terminal Board Installation Details Scale: None Structure Connections & Color Codes Drawing #: CP-07.B Standard CP Installation Detail Date: 2011-Dec-23 Lincoln Water System - Lincoln, NE Rev. 1

Limits of Trench Excavation (nominal 2D + 24") Reference Electrode LWS Standard Pipe Bedding/Backfill (in Pocketed Trench**) 60" (min. sep. as practical)

~36" sep. from pipe Pre-Packaged Anode in Pocketed Trench (Preferred Location**) 3" (min.) 60" (min. sep.) Looped Anode Header Cables (buried alongside pipe) 3" (min.) Pre-Packaged Anode (Alternate Location**)

Undisturbed Earth/Rock

Section A-A

A Test Station See CP Installation Schedule for Spacing Post* 5 7 Anode Anode

Exothermic Weld Insulated Splice Connection(s) (See Dwg. CP-3)

2 3 6

Reference Electrode at 8 midpoint between anodes Insulated Copper Wires n = wire code number A (See Dwg. CP-08.B)

Plan View

**Backfilled with min. 12" Native Soil * Install post-type test station within flush enclosure where specified Anode Test Station Scale: None (Drawing Code "ATS") Drawing #: CP-08.A Standard CP Installation Detail Date: 2011-Dec-23 Lincoln Water System - Lincoln, NE Rev. 0 CLEAR Polycarbonate Terminal Board w/RED screw-on cover (not shown) Front Side: 1/4-20 Binding Posts 3 2 Backside:1/4-20 hex nuts on 1/4-20 x 1" screws w/lock washer & fiber washer

6 5 #12 AWG (Blue) to New Water Main Shunt Resistor (opposite side to wires) 8 Shorting Bar (opposite side to wires)

7 #8 AWG (Red) to Anode(s) #8 AWG (Blue) to New Water Main #14 AWG (Yellow) to Reference Electrode

Connector Ring

3" (nominal) White PE Pipe

Front Back

ATS Terminal Board Installation Details Scale: None Structure Connections & Color Codes Drawing #: CP-08.B Standard CP Installation Detail Date: 2011-Dec-23 Lincoln Water System - Lincoln, NE Rev. 0 Polycarbonate Cover (color varies by TS type)

(CLEAR) Polycarbonate Terminal Board 1 (refer to individual test station wiring diagrams)

3 2 4 Terminal Board (shown w/o cover and wire terminations) 6 5

9 8 7 11 10

Connector Ring

3" (nominal) x 60" PE Pipe

3/8" hex hold-down bolt (typ. for 2)

23.25" L x 13.75" W x 2" th. Polymer Concrete Cover Test Station & 25" L x 15.5" W x 12" H Terminal Board Polymer Conc. Enclosure

CP Wire & Cable Entry 6" Gravel Base to Support contained within PE pipe & Drain Enclosure Flush-Mounted Enclosure for Scale: None Test Station Terminal Board & Wires Drawing #: CP-09.f Standard CP Installation Detail Date: 2011-Dec-23 Lincoln Water System - Lincoln, NE Rev. 1 Polycarbonate Cover (color varies by TS type)

1

3 2 Terminal Board 4 (shown w/o cover and 6 5 wire terminations) 36" to 42" 9 8 7 11 10

Connector Ring

3" (nominal) PE Pipe

Finished Grade

CP Wire & Cable Entry (Refer to individual test min. 36" station wiring diagrams)

Pull-Out Anchor

Post Type Test Station for Scale: None Test Station Terminal Board & Wires Drawing #: CP-09.p Standard CP Installation Detail Date: 2011-Dec-23 Lincoln Water System - Lincoln, NE Rev. 1 Flange Side A Flange Side B

Single-Side Isolation

Type F Ring Gasket

Type E Full Face Gasket

Two-Side Isolation

Required Information to Properly Size a Flange Isolation Kit Flange Spec. ______Flange Size ______Flange Rating ______Flange O.D. ______Flange I.D. ______Bolt Circle Ø ______Qty. Bolt Holes ______Flange Bolt Ø ______Bolt Hole Ø ______Flange Thickness (A) ______Flange Thickness (B) ______

Flange Isolation Kit Scale: None (Drawing Code "FIK") Drawing #: CP-10 Standard CP Installation Detail Date: 2011-Dec-23 Lincoln Water System - Lincoln, NE Rev. 0 3 casing isolators per pipe section (spaced at 6' O.C. max.) 1" min. line

match 6" max. center line

1

line match

2 Casing Isolator and Casing End Seal

1 line 2' 0" match max. center line

2' 0" max. line match

Casing Isolators Installed at Pipe Joint 1 Stainless Steel Band Casing Isolator w/Dielectric Runners 2 Wrap-Around Casing Boot End Seal (pipe not req'd to be centered)

Note: Ductile Iron Pipe is shown - casing isolators for WSP are similar Electrical Isolation Devices for Scale: None Metallic Casing Sleeves Drawing #: CP-11 Standard CP Installation Detail Date: 2011-Dec-23 Lincoln Water System - Lincoln, NE Rev. 0 Tee-Head & Stem Flared Copper Nut

Brass Assembly Threads Connection to Water Main

Connection to Water Service Line

AWWA Taper Threads Nylon Insulator

Isolation Corporation Stop Scale: None (Drawing Code "ICS") Drawing #: CP-12 Standard CP Installation Detail Date: 2011-Dec-23 Lincoln Water System - Lincoln, NE Rev. 0 Middle Ring Bolt Follower Nut

Isolation Boot Pipe-End Separator over Both Pipe Ends

Buna-S Isolation Buna-S Armored Gasket Gasket

Pipe Wall Section A: View through Pipe Coupling

A A

Pipe Isolation Coupling

See Dwg. CP-13b for Pipe Isolation Coupling w/Supplemental Restraint Pipe Isolation Coupling (w/o Restraint) Scale: None (Drawing Code "PIC") Drawing #: CP-13a Standard CP Installation Detail Date: 2011-Dec-23 Lincoln Water System - Lincoln, NE Rev. 0 Delrin (R) Acetal All-Thread 304 SS Rod Isolation Bushing

Anchor Pin(s)

Tie-Anchor SS Nuts and Washers Thrust Block

Detail - Electrical Isolation at Restraint Rod Bolts

Pipe Isolation Coupling (Drawing CP-12a)

Side A Side B

Pipe Isolation Coupling w/Supplemental Restraint

Required Information to Properly Size Joint Restraint Pipe Diameter ______Working Pressure ______Test Pressure ______Thrust Load Req’d ______Rod Length Req’d ______Pipe Material (Side A) ______Pipe Material (Side B) ______

Pipe Isolation Coupling (Restrained) Scale: None (Drawing Code "PIC") Drawing #: CP-13b Standard CP Installation Detail Date: 2011-Dec-23 Lincoln Water System - Lincoln, NE Rev. 0

ATTACHMENT 3: GEOTECHNICAL REPORT

REPORT OF GEOTECHNICAL EXPLORATION

ROKEBY ROAD I MPROVEMENTS BETWEEN 84TH STREET AND 98TH STREET LINCOLN, NEBRASKA

PREPARED FOR DAVIS DESIGN

PREPARED BY OLSSON ASSOCIATES

JULY 28, 2016

OLSSON PROJECT NO: B15-3105

601 P Street, Suite 200, Lincoln, NE • (402) 474-6311 • FAX (402) 474-5160

Date : July 28, 2016

Client : Davis Design RE: Geotechnical Exploration Attn: Mike Wachal Rokeby Road Improvements 1221 N St Ste 600 Between 84th Street and 98th Street Lincoln, Nebraska 68508 Lincoln, Nebraska Olsson Project No. B15-3105

Dear Mr. Wachal:

Olsson Associates has completed the authorized geotechnical exploration for the above referenced project. The geotechnical exploration was conducted to evaluate physical characteristics of subsurface conditions with respect to design and construction of this project. The enclosed report summarizes the project characteristics as we understand them, presents the findings of the borings and laboratory tests, discusses the observed subsurface conditions, and provides geotechnical engineering recommendations for this project.

We appreciate the opportunity to provide our geotechnical engineering services for this project. If you have any questions or need further assistance, please contact us at your convenience. We are also staffed and equipped to provide construction testing and inspection services on this project as well.

Respectfully submitted, Olsson Associates

Prepared By: Reviewed By:

Steve Jensen, E.I. Andrew M. Phillips, P.E. Assistant Geotechnical Engineer Assistant Geotechnical Engineer 402.980.9300 402.458.5625

601 P Street, Suite 200 Lincoln, Nebraska 68508 www.olssonassociates.com

TABLE OF CONTENTS PAGE

A. PROJECT UNDERSTANDING ...... 1 A.1. Geotechnical Scope ...... 1 A.2. Site Location and Description ...... 1 A.3. Project Information ...... 2

B. EXPLORATORY AND TEST PROCEDURES ...... 3 B.1. Field Exploration ...... 3 B.2. Laboratory Testing ...... 3

C. SUBSURFACE CONDITIONS ...... 4 C.1. Area Geology ...... 4 C.2. Test Borings and Laboratory Summary ...... 4 C.3. Groundwater Summary ...... 6

D. SITE PREPARATION ...... 7 D.1.A. General Site Preparation ...... 7 D.1.B. Site Preparation (Between Stations 1154+00 to 1172+00, 1178+00 to 1188+00, and 1203+00 to 1206+00) ...... 7 D.1.C. Site Preparation (Between Station 1172+00 to 1178+00) ...... 8 D.1.D. Additional General Site Preparation (Between Station 1154+00 to 1203+00) .... 9 D.2. Settlement ...... 10 D.3. Structural Fill ...... 11 D.4. Construction Equipment Mobility ...... 13 D.5. Drainage and Groundwater Considerations ...... 14 D.6. Temporary Slopes and Excavations ...... 15

E. PAVEMENTS ...... 16 E.1. Pavement Subgrade Preparation ...... 16 E.2. Pavement Design ...... 16

F. LIMITATIONS ...... 19 F.1. Report Limitations ...... 19

TABLES TABLE 1: PAVEMENT DESIGN FACTORS ...... 2 TABLE 2: GROUNDWATER MEASUREMENTS ...... 6 TABLE 3: STRUCTURAL FILL PLACEMENT GUIDELINES...... 12

APPENDICES Appendix A: Site Location Plan, Boring Location Map Appendix B: Symbols and Nomenclature, Boring Logs, Electronic Cone Penetration Tests Appendix C: Summary of Laboratory Test Results

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601 P Street, Suite 200 Lincoln, Nebraska 68508 www.olssonassociates.com

Rokeby Road Improvements Report of Geotechnical Exploration Between the intersections of 84th Street to 98th Street Lincoln, Nebraska Olsson Project No. B15-3105

A. PROJECT UNDERSTANDING

A.1. GEOTECHNICAL SCOPE This report presents the results of the subsurface exploration completed for the proposed Rokeby Road reconstruction between the intersections of 84th Street and 98th Street in Lincoln, Nebraska.

The purpose of this geotechnical exploration was to evaluate the subsurface conditions and provide recommendations regarding the design of proposed pavement. We have completed the following scope of services for this project:

 Performed a site reconnaissance and reviewed geologic subsurface conditions.  Drilled 9 soil test borings to a depth ranging from 15 to 30 feet below the existing ground surface.  Completed two electronic cone penetration tests to a depth ranging from 26 to 30 feet below the existing ground surface.  Conducted a geotechnical engineering evaluation using information obtained from our observations, soil test borings and laboratory tests, and information available regarding the proposed construction.  Preparation of this Report of Geotechnical Exploration presenting the soil test borings, laboratory test results, and a summary of our engineering evaluations and recommendations.

The scope of this exploration did not include any environmental assessment for the presence of wetlands and/or hazardous or toxic materials in the soil or groundwater on or near the site. Any statements in this report regarding odors, discoloration, or suspicious conditions are strictly for the information of our client.

A.2. SITE LOCATION AND DESCRIPTION

The proposed pavement improvements project is located along Rokeby Road between the intersections of 84th Street and 98th Street in Lincoln, Nebraska. At the time of our field exploration, the site consisted of gravel surfacing which was accessible with a truck-mounted drill rig. The approximate location of the proposed pavement improvements are depicted on the Boring Location Plan included in Appendix A.

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Rokeby Road Improvements Report of Geotechnical Exploration Between the intersections of 84th Street to 98th Street Lincoln, Nebraska Olsson Project No. B15-3105

A.3. PROJECT INFORMATION The proposed Rokeby Road improvements will include the construction of a new concrete road located between the intersection of 84th Street and 98th Street in Lincoln, Nebraska. Based on the topographic map, the existing site grades along the road range from low elevation of 1386.0 to a high elevation of 1445.0. A maximum structural fill depth of 10 feet and excavation depth of 10 feet is anticipated below the proposed pavement. A maximum structural fill depth of 10 feet and maximum excavation depth of 11 feet is anticipated outside of the edge of the proposed pavement.

The purpose of this investigation was to evaluate the subgrade conditions beneath the current roadway along with providing recommendations regarding subgrade preparation and concrete pavement.

Traffic loads on the proposed pavement was assumed to consist of cars, pickup trucks, garbage trucks, delivery trucks, and semi-trucks. The design factors are presented in Table 1 for use with pavement design. The number of trucks was based on 2 percent of the Average Daily Traffic, which was provided by Olsson.

TABLE 1 PAVEMENT DESIGN FACTORS Post Construction 2015 Traffic Current 2015 Traffic 2040 Traffic (Used for Design) Average Daily Average Daily Average Daily Number of Number of Number of Traffic Traffic Traffic Trucks Trucks Trucks (ADT) (ADT) (ADT)

200 4 1,525 31 2,500 50

It was indicated by Olsson that a sudden increase in the average daily traffic would occur shortly after the completion of construction operations being done near the area. Therefore, the 2015 traffic used in design was interpolated based on a 2 percent growth rate from the 2040 average daily traffic values provided by Olsson. The current 2015 average daily traffic data provided above resulted in unrealistic results for the pavement design.

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Rokeby Road Improvements Report of Geotechnical Exploration Between the intersections of 84th Street to 98th Street Lincoln, Nebraska Olsson Project No. B15-3105

B. EXPLORATORY AND TEST PROCEDURES

B.1. FIELD EXPLORATION

The field exploration program consisted of performing 9 soil test borings and 2 electronic cone penetration tests at the locations depicted on the Boring Location Plan presented in Appendix A. Ground surface elevations at the boring locations were interpreted from the topographic map provided by Olsson. The surface elevation at the boring locations were rounded to the nearest half foot and are presented on the boring logs.

The soil test borings were extended to depths ranging from 15 to 30 feet below the existing ground surface with a truck-mounted drill rig using continuous-flight augers. The electronic cone penetration tests were extended to depths ranging from 26 to 30 feet below the existing ground surface. Soil samples were obtained at selected intervals in the soil test borings. Soils samples designated as “U” samples on the boring logs were obtained in using Thin-Walled Tube Sampling techniques. Soil samples designated as “SS” samples were obtained during Penetration Test using a Split-Spoon Barrel sampler. Recovered samples were sealed in containers, labeled, and protected for transportation to the laboratory for testing.

B.2. LABORATORY TESTING Descriptions of the soils encountered in the soil test borings were prepared using Visual-Manual Procedures for Descriptions and Identification of Soils. Laboratory tests were also performed to evaluate the engineering properties for the recovered soil samples. Moisture content tests and density determinations were used to determine the existing moisture/density condition of the soils. Unconfined compression tests were used to help define the stress-strain characteristics and related shear strength of the cohesive soils. Atterberg limits tests were performed to aid in the classification of the soils under the Unified Classification System and to evaluate the shrink/swell characteristics of the soils. Two consolidation tests were completed on an undisturbed, thin-walled tube sample to evaluate the consolidation and settlement potential of the typical on-site soils. Two California Bearing Ratio (CBR) tests was complete on bulk samples of the existing fill and the Peoria loess material to determine a CBR for use with pavement design. Two standard Proctor tests were performed on composite bulk samples of fill and Peoria loess material to determine the maximum dry density and optimum moisture content of the existing material. A summary of the laboratory test results is presented in Appendix C.

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Rokeby Road Improvements Report of Geotechnical Exploration Between the intersections of 84th Street to 98th Street Lincoln, Nebraska Olsson Project No. B15-3105

C. SUBSURFACE CONDITIONS

C.1. AREA GEOLOGY The site lies in the Hillslopes region of Nebraska at the interface of the Wymore silty clay loam. These soils are known to be gently sloping, moderately well drained, and have a very low to moderately low permeability.

C.2. TEST BORINGS AND LABORATORY SUMMARY The generalized subsurface profile for this site, in descending order, generally consisted of gravel surfacing overlying existing fill, Peoria loess, Loveland, and glacial till soils. Specific soil descriptions are noted in more detail on the Soil Test Boring Logs in Appendix B.

Gravel Surfacing Gravel surfacing, approximately 4.0 to 6.0 inches thick, was encountered in each of the soil test borings. It should be noted that the gravel surfacing material encountered in the soil test borings should be removed prior to the placement of structural fill.

Existing Fill Existing fill was encountered in each of the soil test borings at the time of drilling operations. Soils identified as existing fill were generally firm to hard, light to very dark brown, moist to wet, mostly fat clay with varying amounts of fine to coarse sand and fine gravel.

EXISTING FILL LABORATORY TEST RESULTS Atterberg Limits Unconfined SPT "N" USCS Moisture Dry Density % Passing Strength Liquid Plastic Plastic Values Classification Content (%) (pcf) P200 (tsf) Limit Limit Index (bpf) (%) (%) (%)

CH, CL/CH 19.0-33.2 84.9-104.3 1.1 51 - 58 22 - 23 29 - 35 -- --

Altered Peoria Loess Altered Peoria loess was encountered in soil test borings B-1, B-2, B-7, and B-8 at the time of drilling operations. Soils identified as altered Peoria loess were generally firm to stiff, light brown with grey, very moist, and mostly lean to fat clay with varying amounts of fine sand.

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Rokeby Road Improvements Report of Geotechnical Exploration Between the intersections of 84th Street to 98th Street Lincoln, Nebraska Olsson Project No. B15-3105

ALTERED PEORIA LOESS LABORATORY TEST RESULTS Atterberg Limits Unconfined SPT "N" USCS Moisture Dry Density % Passing Strength Liquid Plastic Plastic Values Classification Content (%) (pcf) P200 (tsf) Limit Limit Index (bpf) (%) (%) (%)

CH, CL/CH 24.3-25.8 95.9-99.5 1.7 ------

Peoria Loess Peoria loess was encountered in each of the soil test borings except B-4, B-5, and B-6 at the time of drilling operations. Soils identified as Peoria loess were generally firm to stiff, light greyish brown, very moist, mostly lean clay with varying amounts of fine sand and silt.

PEORIA LOESS LABORATORY TEST RESULTS Atterberg Limits Unconfined SPT "N" USCS Moisture Dry Density % Passing Strength Liquid Plastic Plastic Values Classification Content (%) (pcf) P200 (tsf) Limit Limit Index (bpf) (%) (%) (%) CL, CL/CH, 26.8-32.6 87.4-94.9 0.6-1.5 42 - 45 20 22 - 25 -- 4-10 CL/ML

Loveland Formation Loveland formation was encountered in each of the soil test borings except B-4, B-6, and B-8 at the time of drilling operations. Soils identified as Loveland formation were generally firm to stiff, light reddish brown to dark brown, very moist to wet, mostly lean to fat clay with varying amounts of fine to coarse sand, fine gravel, and silt.

LOVELAND FORMATION LABORATORY TEST RESULTS Atterberg Limits Unconfined SPT "N" USCS Moisture Dry Density % Passing Strength Liquid Plastic Plastic Values Classification Content (%) (pcf) P200 (tsf) Limit Limit Index (bpf) (%) (%) (%)

CL/CH 26.6-28.8 93.7-97.8 0.8-1.6 ------6

Glacial Till Glacial till was encountered in each of the soil test borings except B-2, B-8, and B-9 at the time of drilling operations. Soils identified as glacial till were generally firm to very stiff, greyish brown, wet, mostly lean to fat clay with varying amounts of fine to coarse sand and silt.

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Rokeby Road Improvements Report of Geotechnical Exploration Between the intersections of 84th Street to 98th Street Lincoln, Nebraska Olsson Project No. B15-3105

GLACIAL TILL LABORATORY TEST RESULTS Atterberg Limits Unconfined SPT "N" USCS Moisture Dry Density % Passing Strength Liquid Plastic Plastic Values Classification Content (%) (pcf) P200 (tsf) Limit Limit Index (bpf) (%) (%) (%)

CH, CL, CL/CH 17.5-27.7 94.5-113.4 0.6-1.2 ------6-18

STANDARD PROCTOR RESULTS Optimum Maximum Dry Sample Depth Moisture Formation Sample Description Density (feet) Content (pcf) (%)

Existing Fill Dark brown clay from B-6 1.0 - 5.0 96.3 23.5

Peoria Loess Light greyish brown clay from B-1 & B-2 4.0 – 10.0 102.0 20.4

C.3. GROUNDWATER SUMMARY Groundwater was encountered in the soil test borings at the time of drilling operations and will likely be a factor during construction activities in the area of soil test boring B-4. Groundwater levels will fluctuate depending on seasonal variations of precipitation and other factors that may occur at higher elevations at some time in the future. Section D.5 of this report will address any site drainage concerns with water elevations in this region.

TABLE 2 GROUNDWATER MEASUREMENTS Groundwater Groundwater Groundwater Groundwater Groundwater Groundwater Depth Depth 24 Boring Depth During Elevation Elevation Elevation 24 Immediately Hours After No. Drilling During Immediately Hours After After Drilling Drilling (Feet) Drilling After Drilling Drilling (Feet) (Feet) B-1 13.0 1376.0 13.2 1375.8 11.4 1377.6 B-2 12.5 1385.0 11.6 1385.9 12.8 1384.7 B-3 13.5 1381.0 13.5 1381.0 12.3 1382.2 B-4 3.3 1388.2 3.8 1387.7 3.1 1388.4 B-5 10.0 1387.5 7.5 1390.0 7.9 1389.6 B-6 13.5 1385.5 20.5 1378.5 6.6 1392.4 B-7 13.5 1412.5 22.0 1390.5 NP NA B-8 14.0 1422.0 13.5 1422.5 13.1 1422.9 B-9 12.5 1419.5 12.5 1419.5 10.9 1421.1

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Rokeby Road Improvements Report of Geotechnical Exploration Between the intersections of 84th Street to 98th Street Lincoln, Nebraska Olsson Project No. B15-3105

D. SITE PREPARATION

D.1.A. GENERAL SITE PREPARATION In all new fill and excavation areas, vegetation, gravel (typically 4.0 to 6.0 inches thick), and other deleterious materials deemed unsuitable by the full-time field observer shall be removed from the proposed construction area and replaced with controlled fill. Site clearing, grubbing, and stripping will need to be performed only during dry weather conditions. Operations of heavy equipment on the site during wet conditions could result in excessive rutting and mixing of organic debris with the underlying soils.

D.1.B. SITE PREPARATION (BETWEEN STATIONS 1154+00 TO 1172+00, 1178+00 TO 1188+00, AND

1203+00 TO 1206+00) Based on the laboratory testing and site observations at the time of drilling operations, the existing fill material was found to be variable in density and moisture content and is not suitable for support of the proposed concrete pavement. Therefore, we recommend overexcavating the pavement areas to 3 feet below the existing ground surface or to the base of the existing fill material. Excavations for the pavement should be extended horizontally 3 feet beyond the outside edge of the pavement. The sides of the excavation should be sloped at a 1(H):1(V) to permit controlled earth fill to be placed against the sides of the excavations to the specified degree of compaction as stated in Section D.3 of this report. Backfill placed on sloped areas within the proposed structure areas shall be “benched” horizontally a minimum of five feet into the side of the slope, so that the lifts of backfill are placed and compacted in as nearly a horizontal plane as possible. Lifts of backfill material shall be placed and compacted in such a fashion to allow overlying lifts to interlock with the underlying soils to reduce consolidation potential along the slope interface. In addition to the fill placement along the slopes, the base of the excavation should be at least wide enough to allow for compaction equipment to be utilized. A representative from Olsson should observe the excavation operations to document conformance to the above recommendations.

In addition to the previously recommended overexcavation operations, we recommend the proposed pavement area be dynamically compacted to provide additional consolidation of the underlying soils. The dynamic compaction process should be compacted with a pull behind concrete breaker, such as the Impactor 2000 or engineer-approved equivalent. The dynamic compaction should be completed with approximately four passes across the entire pavement area. It has been our experience that the dynamic compaction would likely result in the densification of approximately 3 feet of the existing fill soils. An Olsson’s field representative should observe the pavement areas prior to the dynamic compaction and past dynamic

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Rokeby Road Improvements Report of Geotechnical Exploration Between the intersections of 84th Street to 98th Street Lincoln, Nebraska Olsson Project No. B15-3105 compaction to document conformance to the above recommendations. Depending upon the results of the compaction testing completed after dynamic compaction, additional passes by the impactor may be necessary.

After the dynamic compaction has been completed, re-compacted structural fill material placed within the excavation area should be compacted to 98 percent of the maximum dry density as determined by ASTM D698-91 Standard Proctor Moisture-Density relationship. The moisture content should be controlled between -2 to +3 percent of optimum. The base of the excavation should be tested prior to structural fill placement to verify the proper compaction percentage and moisture content.

D.1.C. SITE PREPARATION (BETWEEN STATION 1172+00 TO 1178+00) Based on the laboratory testing and site observations at the time of drilling operations, the existing fill material was found to be variable in density and moisture content and is not suitable for support of the proposed concrete pavement. Therefore, we recommend overexcavating the pavement areas to 5 feet below the existing ground surface or to the base of the existing fill material. Excavations for the pavement should be extended horizontally 5 feet beyond the outside edge of the pavement. The sides of the excavation should be sloped at a 1(H):1(V) to permit controlled earth fill to be placed against the sides of the excavations to the specified degree of compaction as stated in Section D.3 of this report. Backfill placed on sloped areas within the proposed structure areas shall be “benched” horizontally a minimum of five feet into the side of the slope, so that the lifts of backfill are placed and compacted in as nearly a horizontal plane as possible. Lifts of backfill material shall be placed and compacted in such a fashion to allow overlying lifts to interlock with the underlying soils to reduce consolidation potential along the slope interface. In addition to the fill placement along the slopes, the base of the excavation should be at least wide enough to allow for compaction equipment to be utilized. A representative from Olsson should observe the excavation operations to document conformance to the above recommendations.

Groundwater was encountered in soil test boring B-4 at an elevation above the recommended depth of overexcavation. The contractor will have to determine what measures are necessary based upon their means and methods to establish a stable working platform for compaction of the structural fill. Methods of stabilization would typically include the use of crushed stone and/or a geosynthetic fabric or grid over the soft soils but the contractor should determine the appropriate stabilization method based on their means and methods. The nearly saturated to saturated soil condition at the base of excavation operations could exhibit pumping and rutting issues under the

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Rokeby Road Improvements Report of Geotechnical Exploration Between the intersections of 84th Street to 98th Street Lincoln, Nebraska Olsson Project No. B15-3105 construction traffic if considerations are not given by the contractor to provide a working platform at the base of the overexcavation. The contractor will also be required to determine whatever dewatering operations they deem necessary based upon their means and methods in order to achieve the recommended excavation depth and to provide a stable subgrade necessary for compaction of structural fill.

At a minimum, excavations within the final three feet of soil should be done with a backhoe operating type equipment, or a similar method. After excavating the subgrade elevation, equipment access and traffic on the exposed subgrade should be kept to a minimum. Heavy scrapers and rubber tired construction equipment are not recommended for use during the excavation operations. In these areas, we recommend no proofrolling operations be implemented before structural fill is placed. If proofrolling operations were implemented, the underlying subgrade soil could result in pumping and rutting. The contractor shall be responsible for maintaining a working platform at the base of all excavations and should keep the construction traffic on the exposed subgrade soils to a minimum.

D.1.D. ADDITIONAL GENERAL SITE PREPARATION (BETWEEN STATION 1154+00 TO 1203+00) Special attention should be made to verify the fill areas beyond the existing roadway shoulders are properly compacted and bonded to the native soil. An insufficient bond is often made between the fill and the slope of the existing roadway. The fill placement should bench a recommended five feet horizontally to two feet vertically into the existing roadway slope during grading operations. By benching into the slope, it provides a better bond between the soil materials and increases the shear strength along the two surfaces.

As part of the roadway project, utility crossing may be necessary. It is critical that all utility trench backfill be tested to verify the recommended compaction and moisture criteria are achieved. Inadequate compaction by utility contractors because of excessive lift thicknesses or lack of compaction effort will eventually lead to longitudinal cracks that traverse along the utility trench.

Based on Atterberg limits test, the subgrade material within 12 inches from the base of the pavement or aggregate base (if used) is unsuitable for support of the proposed pavement. Therefore, we recommend either overexcavating the pavement areas to a depth of 12 inches below the base of the concrete pavement or aggregate base (if used) and replacing with lean clay structural fill or chemically stabilizing the existing subgrade soils. The on-site soils could be used as structural fill within 12 inches from the base of the concrete pavement or aggregate base (if

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Rokeby Road Improvements Report of Geotechnical Exploration Between the intersections of 84th Street to 98th Street Lincoln, Nebraska Olsson Project No. B15-3105 used) if stabilized with at least 15 percent Type ‘C’ flyash (based on dry unit weight, approximately 15 psf) or 4 percent quicklime (approximately 4.0 psf). The chemically stabilized subgrade shall be compacted to a minimum of 98 percent of the maximum dry density as determined by ASTM D698-91. The moisture content at the time of compaction should also be controlled between optimum and +3 percent of the materials optimum. For proper stabilization, the flyash or quicklime should be thoroughly mixed into the clay soils. High speed rotary pulverization equipment should be used for mixing the flyash or quicklime and soil. The use of an agricultural disk for this purpose is considered inadequate and is not recommended.

D.2. SETTLEMENT Two one-dimensional consolidation tests were completed across the project site and the information was utilized to predict the settlement associated with the fill placement for the proposed roadway. Settlement across the project site will vary depending on the thickness of the compressible layer and the fill placement depths. Settlement calculations were completed utilizing the maximum fill depths for the roadway (approximately 10 feet of fill). The predicted settlement along the roadway at the maximum fill height was approximately 1.0 to 1.5 inches. It is recommended that areas where the depth of the structural fill at the center line of the pavement and the edge of the pavement that has a difference in height of greater than 4 feet be preloaded to the finished grade elevation. It is also recommended that all areas with a structural fill depth greater than 10 feet be preloaded to the finished grade elevation. The pre-load operations would involve placing the permanent structural fill soils up to finished subgrade elevation and allowing the consolidation of the underlying subgrade soils prior to construction of the pavement. Based on the cross-sections provided by Olsson, it appears the pre-loading operations may not be needed.

Based on the construction sequence regarding grading operations with respect to pavement installation, it is recommended that mass grading in preload areas be completed at least 30 to 45 days in advance of foundation construction. Based on the site geology and existing topography, we believe the actual thickness of the compressive zone is probably between the depths of one to 20 feet below the existing ground surface elevation. Should the actual thickness of the compressive soils be greater than a depth of 20 feet, the time for the completion of primary settlement could potential be longer than 30 to 45 days. A settlement monitoring program is discussed later in this section of the report and will outline the criteria regarding when the preload operations is complete.

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Rokeby Road Improvements Report of Geotechnical Exploration Between the intersections of 84th Street to 98th Street Lincoln, Nebraska Olsson Project No. B15-3105

Note: As an alternative to reduce the time of consolidation in the area of preload operations, the proposed roadway could be surcharge with an additional 4 feet of fill material above the finished pavement elevation to reduce the time of consolidation to approximately 20 to 30 days. The proposed fill should be placed and compacted in accordance with the recommendations stated in Section D.3 of this report. The surcharge fill should be placed and compacted to a minimum wet density of 115 pounds per cubic foot.

Actual verification of when to begin pavement construction should be based on the data obtained from a settlement-monitoring program. Written approval from the geotechnical engineer should be obtained before the beginning of the pavement construction. Therefore, we recommend that installation of settlement monuments (rebar) in preload areas to verify when primary consolidation is complete. After the structural fill operations are complete, the settlement monuments should be surveyed a minimum of once a week until primary settlement is complete. The evaluation of the settlement monuments should be surveyed to the nearest 100th of a foot. To verify and properly document those recommendations, it is recommended that Olsson be retained during construction to monitor the settlement plates.

D.3. STRUCTURAL FILL During construction, we recommend that all structural fill placed within 12 inches of the base of the aggregate base (foundation course) have a liquid limit less than 50 and a plasticity index lower than 30 or the subgrade soils should be treated with flyash. The on-site soils are suitable for reuse as structural fill at depths greater than 12 inches from the base of the aggregate base or pavement subgrade as applicable. Off-site borrow material used for structural fill should have a liquid limit less than 50 and a plasticity index less than 30.

In addition to the plasticity characteristics, the fill soils should also be relatively free of organic material (less than about 2 percent by weight) and other deleterious material. Also, the soils should preferably not contain particle sizes larger than three inches.

Imported fill material should be tested prior to placement at the site to verify it complies with the criteria stated in this section of the report. Samples of the proposed imported structural fill should be submitted at least three days prior to placement so the necessary laboratory tests can be performed.

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Rokeby Road Improvements Report of Geotechnical Exploration Between the intersections of 84th Street to 98th Street Lincoln, Nebraska Olsson Project No. B15-3105

Suitable fill material should be placed in thin lifts (lift thickness depends on type of compaction equipment, but in general, lifts of 8 inches loose measurement is recommended). The soil should be compacted by heavy compaction equipment such as a Caterpillar 815 sheepsfoot roller. Within small excavations, such as in utility trenches (less than 24 inches in width), around manholes or behind retaining walls, we recommend the use of "wacker packers", "Rammax" compactors, or vibrating plate compactors to achieve the specified compaction. Loose lift thickness of 4 inches are recommended in small area fills.

We recommend that structural fill and backfill be compacted in accordance with the criteria stated in Table 3. A qualified field representative should periodically observe fill placement operations and perform field density tests concurrently to indicate if the specified compaction is being achieved.

TABLE 3 STRUCTURAL FILL PLACEMENT GUIDELINES

Compaction Recommendation Moisture Content Areas of Fill Placement (ASTM D698-Standard (Percent of Optimum) Proctor) As necessary to obtain Foundation Course Beneath Pavement 98%* density Pavement Soil Subgrade – 1.0’ below the 98% Optimum to +3 percent base of the pavement Structural fill placed below the base of the 95% -2 to +3 percent Pavement Soil Subgrade Utility Trenches - Within pavement areas 98% -2 to +3 percent As necessary to obtain Beneath Landscaped/Grass Areas 92% density * Alternative Compaction Method – 70% Relative Density

The moisture content of suitable borrow soils should generally be between the specified ranges in Table 3. More stringent moisture limits may be necessary with certain soils. Adjustment of moisture content may be necessary to allow compaction in accordance with project specifications. Depending on the percentage of fines, the clean free-draining aggregates utilized in the granular cushion beneath that pavement could alternatively be consolidated by means of a vibratory compactor to at least 70% “relative density”, as determined in accordance with ASTM D4253 (Standard Test Methods for Maximum Index Density and Unit Weight of Soils Using a Vibratory Table) and D4254 (Standard Test Methods for Minimum Index Density and Unit Weight of Soils and Calculations or Relative Density).

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Rokeby Road Improvements Report of Geotechnical Exploration Between the intersections of 84th Street to 98th Street Lincoln, Nebraska Olsson Project No. B15-3105

D.4. CONSTRUCTION EQUIPMENT MOBILITY Some of the soils encountered at this site may be highly susceptible to softening under the action of construction equipment traffic in combination with wet weather. Mitigation of equipment mobility problems and management of soft surficial soils will be greatly dependent on the severity of the problem, the season in which construction is performed and prevailing weather conditions.

Some general guidelines for reducing equipment mobility problems and dealing with soft, wet, surficial soils are as follows:

 Optimize surface water drainage at the site.  Whenever possible, wait for dry weather conditions to prevail, and do not operate construction equipment on the site during wet conditions. Rutting the surface will only aggravate the problem.  Use construction equipment that is well suited for the intended job under the site conditions. Heavy rubber-tired equipment typically requires better site conditions than light, track-mounted equipment, especially on granular and less cohesive soil conditions.  Implement a construction schedule that realistically allows for rain days. Pressure to perform earthwork under a tight schedule is frequently counterproductive.

Ultimately, it may be necessary to take steps to aggressively improve construction mobility if construction must proceed under unfavorable conditions. Methods for addressing equipment mobility problems may range from removing several feet of soft wet soils, to utilizing crushed stone materials and/or appropriate stabilization fabrics. Other methods include cement modification of soils, lime stabilization, etc. The optimal approach should be determined by a representative of the geotechnical engineer at the time of construction.

Any additional disturbance below the proposed subgrade elevation should be the responsibility of the general contractor to stabilize by means which are in accordance with the project specifications and this report. Any site or soil conditions which are a result of adverse weather conditions and which may require additional measures to improve construction mobility and site conditions should be the responsibility of the general contractor. The contractor should not allow water to collect near the surface of pavement areas, either during or after construction. Site grading should be designed to provide rapid and efficient drainage of water away from the pavement areas at all times during construction.

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Rokeby Road Improvements Report of Geotechnical Exploration Between the intersections of 84th Street to 98th Street Lincoln, Nebraska Olsson Project No. B15-3105

D.5. DRAINAGE AND GROUNDWATER CONSIDERATIONS

At the time of drilling operations, shallow groundwater was encountered in soil test boring B-4 that could impact construction activities. It should be noted that variations in groundwater could be expected based on seasonal changes in rainfall, temperature, snowmelt, runoff, localized irrigation demand, or other factors that may offer from those at the time of the drilling operations.

Based upon the groundwater depth, excavation operations will extend near the depth that groundwater was encountered in soil test boring B-4. In order to construct the improvements, the groundwater table will likely need to be lowered within this area. Dewatering methods that cannot sufficiently discharge the groundwater with the utilization of sump pumps will likely require installation of well points. Dewatering operations, if necessary, should begin in advance of the excavation of lower groundwater to a recommended minimum depth of 3 feet below the lowest subgrade elevation. If sump pumps are utilized, they may need to extend to a depth of 1 to 2 feet below the bottom of footing in order to control the groundwater levels. Consideration should be given to placing a layer of granular material in the base of the excavation to aid in the dewatering process and provide a more stable base for construction. The means and methods used for the dewatering operations necessary for the construction of the proposed structures ultimately the responsibility of the general contractor. Also, a site drainage scheme should be implemented to divert all runoff away from the construction area.

In general, water should not be allowed to collect near the surface of the pavement areas during or after construction. Since soils generally tend to soften when exposed to free water, provisions should be made to remove seepage water from excavation, should it occur. In addition, undercut or excavated areas should be sloped toward one corner to facilitate the collection and removal of rainwater or surface runoff.

In regards to the performance of the pavement subgrade, grading designs should address site drainage issues. The longevity of the pavement can drastically decrease without adequate drainage away from the pavement and underlying subbase. Although no underlying drainage system is recommended, the final contours should incorporate slopes and channels to appropriately discharge the storm runoff away from the runway.

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Rokeby Road Improvements Report of Geotechnical Exploration Between the intersections of 84th Street to 98th Street Lincoln, Nebraska Olsson Project No. B15-3105

D.6. TEMPORARY SLOPES AND EXCAVATIONS

Construction site safety is the sole responsibility of the general contractor. The contractor shall also be responsible for the means, methods, techniques, sequencing, and operations during construction. The contractor should be aware that slope height, slope inclination, and excavation depths (including utility trench excavations) should in no case exceed those specified in local, state, or federal safety regulation; e.g., OSHA Health and Safety Standards for Excavations, 29 CFR Part 19266, or successor regulations. Such regulations are strictly enforced and, if not followed, the owner, the contractor, or earthwork or utility subcontractors could be liable for substantial penalties.

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Rokeby Road Improvements Report of Geotechnical Exploration Between the intersections of 84th Street to 98th Street Lincoln, Nebraska Olsson Project No. B15-3105

E. PAVEMENTS

E.1. PAVEMENT SUBGRADE PREPARATION Based on our experience, the pavement subgrade soils at this site can be adequately prepared by field conditioning and compaction. It is important that the subgrade support be relatively uniform, with no abrupt changes in the degree of support. Non-uniform pavement support can result from the transition at cut and fill areas, varying soil moisture contents, varying soil types, and where utility backfill has been placed in areas to be paved. Improper subgrade preparation such as inadequate vegetation removal, proofrolling, and compaction can also result in non- uniform subgrade support.

To prepare the subgrade, the top 12 inches of the lean clay or chemically stabilized subgrade should be compacted to a minimum of 98 percent of the maximum dry density as determined by ASTM D698-91, Standard Proctor Moisture-Density Relationship at a moisture content between optimum to +3 percent of optimum.

The final subgrade should be proofrolled immediately prior to the placement of concrete to detect any localized areas of instability. Unstable areas should be reworked to provide a uniform subgrade. For a subgrade prepared in this manner, we estimate a California Bearing Ratio (CBR) value of 4.0.

E.2. PAVEMENT DESIGN Pavement design is influenced by the anticipated traffic loads and volumes, site subgrade conditions, pavement materials, traffic study and the desired design life. The recommended pavement thickness is based on our experiences with the alternate pavement types and equivalent pavement sections based on recognized structural coefficients. It is important to note that changes in traffic conditions that exceed the assumptions of this memorandum can have a significant impact on the design life of the pavement.

The recommended design requires that the site be properly prepared in accordance with Section E.1 of this report and that site drainage be provided to minimize the future wetting of the pavement subgrade. A pavement design life of 20 years was used for the concrete pavement design. AASHTO pavement design procedures were used to estimate the required pavement thickness. The following parameters were adopted for the thickness design:

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Rokeby Road Improvements Report of Geotechnical Exploration Between the intersections of 84th Street to 98th Street Lincoln, Nebraska Olsson Project No. B15-3105

■ Subgrade: 12” chemically treated subgrade or lean clay subgrade compacted to at least 98% of ASTM D- 698, at a moisture content between optimum and +3 percent optimum ■ CBR value: 4.0 ■ Working stress (PCC) 668 psi

The pavement recommendations are based on a design life of 20 years, terminal serviceability = 2.5, reliability = 80%, initial serviceability = 4.4, drainage coefficient = .95, and standard deviation = 0.35 for rigid pavements.

A temporary concrete pavement section is also provided for use during construction. The temporary pavement section is based on a design life of 8 years, terminal serviceability = 2.5, reliability = 80%, initial serviceability = 4.4, drainage coefficient = .95, and standard deviation = 0.35 for rigid pavements.

For each pavement section, we have provided a total design ESAL’s and how the total ESAL’s correlate to the daily traffic count for passenger cars and truck delivery traffic. The pavement section was designed based off the anticipated traffic counts provided by Olsson. If the traffic counts described with the pavement section are not sufficient for the proposed roadways please contact the geotechnical engineer.

Based on the above design parameters, we recommend the following minimum pavement design thickness:

General Pavement Cross Section: Doweled Concrete Pavement

Depth (in) Material Designation Material Specification

9.0 Doweled Concrete: NDOR Section 1002, Portland Cement Concrete

4.0 Stabilized Subbase: Crushed limestone or recycled crushed concrete

12.0 Subgrade: NDOR Section 302, Subgrade Preparation or Quicklime Treated

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Rokeby Road Improvements Report of Geotechnical Exploration Between the intersections of 84th Street to 98th Street Lincoln, Nebraska Olsson Project No. B15-3105

Temporary (8 Year Design Life) Non-Doweled Concrete Pavement Correlates to 1,415 - passenger cars and 30 – trucks or less per day Depth (in) Material Designation Material Specification

8.0 Concrete: NDOR Section 1002, Portland Cement Concrete

4.0 Stabilized Subbase: Crushed limestone or recycled crushed concrete

12.0 Subgrade: NDOR Section 302, Subgrade Preparation or Quicklime Treated

Curbs should be backfilled as soon as possible after construction of the pavement. Backfill should be compacted and should be sloped to prevent water from ponding and infiltration under the pavement. Backfill should be compacted and should be sloped to prevent water from ponding and infiltrating the pavement subgrade. All pavement joints should be caulked and any cracks should be quickly patched or sealed to prevent moisture from leaching and softening the subgrade.

The stabilized subbase consisting of either crushed limestone or recycled crushed concrete provides a uniform stable base for the concrete both during construction and over the life of the pavement. The stabilized subbase also provides a drainage layer below the pavement to allow water to pass though the pavement and not accumulate in the subgrade soils. Outlets should be provided in the drainage layer to allow accumulated water to discharge away from the roadway.

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Rokeby Road Improvements Report of Geotechnical Exploration Between the intersections of 84th Street to 98th Street Lincoln, Nebraska Olsson Project No. B15-3105

F. LIMITATIONS

F.1. REPORT LIMITATIONS The conclusions and recommendations presented in this report are based on the information available regarding the proposed construction, the results obtained from our soil test borings and sampling procedures, the results of the laboratory testing program, and our experience with similar projects. The soil test borings represent a very small statistical sampling of subsurface soils and conditions may be encountered during construction that are substantially different from those indicated by the soil test borings. In these instances, adjustments to design and construction may be necessary.

This geotechnical report is based on the site plan and information provided to Olsson and our understanding of the project as noted in this report. Changes in the location or design of the pavement could significantly affect the conclusions and recommendations presented in this geotechnical report. Olsson should be contacted in the event of such changes to determine if the recommendations of this report remain appropriate for the revised site design.

Soil stratification, as shown on the Boring Logs, represent soil conditions at the boring locations; however, variations may occur between or around the boring locations. The lines of demarcation represent the approximate boundary between soil types but the transition may be more gradual.

This report was prepared by an Engineer Intern and reviewed by a Professional Engineer registered in the State of Nebraska with the firm Olsson Associates (Olsson). The conclusions and recommendations contained herein are based on generally accepted, professional, geotechnical engineering practice at the time of this report within this geographic area. No other warranty is expressed or implied. This report has been prepared for the exclusive use of the Davis Design with specific application to the proposed project.

*********************

We trust that this report will assist you in the design and construction of the proposed project. Olsson appreciates the opportunity to provide our services on this project and looks forward to working with you during construction and on future projects. Should you have any questions, please do not hesitate to contact us.

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APPENDIX A Site Location Plan Boring Location Map

ROKEBY ROAD IMPROVEMENTS 84 TH TO 98 TH STREET PROJECT SITE LOCATION

SITE LOCATION PLAN ROKEBY ROAD IMPROVEMENTS 84 TH TO 98 TH STREET LINCOLN, NEBRASKA OA PROJECT NO. B15-3105

__ APPENDIX B SYMBOLS AND NOMENCLATURE BORING LOGS ELECTRONIC CONE PENETRATION TESTS

SYMBOLS AND NOMENCLATURE

DRILLING NOTES

DRILLING AND SAMPLING SYMBOLS

SS: Split-Spoon Sample (1.375” ID, 2.0” OD) HSA: Hollow Stem Auger NE: Not Encountered U: Thin-Walled Tube Sample (3.0” OD) CFA: Continuous Flight Auger NP: Not Performed CS: Continuous Sample HA: Hand Auger NA: Not Applicable BS: Bulk Sample CPT: Cone Penetration Test % Rec: Percent of Recovery MC: Modified California Sampler WB: Wash Bore WD: While Drilling GB: Grab Sample FT: Fish Tail Bit IAD: Immediately After Drilling SPT: Standard Penetration Test Blows per 6.0” RB: Rock Bit AD: After Drilling CI: Cave-In DRILLING PROCEDURES Soil samples designated as “U” samples on the boring logs were obtained in using Thin-Walled Tube Sampling techniques. Soil samples designated as “SS” samples were obtained during Penetration Test using a Split-Spoon Barrel sampler. The standard penetration resistance ‘N’ value is the number of blows of a 140 pound hammer falling 30 inches to drive the Split-Spoon sampler one foot. Soil samples designated as “MC” were obtained in using Thick-Walled, Ring-Lined, Split-Barrel Drive sampling techniques. Recovered samples were sealed in containers, labeled, and protected for transportation to the laboratory for testing.

WATER LEVEL MEASUREMENTS Water levels indicated on the boring logs are levels measured in the borings at the times indicated. In relatively high permeable materials, the indicated levels may reflect the location of groundwater. In low permeability soils, the accurate determination of groundwater levels is not possible with only short-term observations.

SOIL PROPERTIES & DESCRIPTIONS

Descriptions of the soils encountered in the soil test borings were prepared using Visual-Manual Procedures for Descriptions and Identification of Soils.

PARTICLE SIZE Boulders 12 in. + Coarse Sand 4.75mm-2.0mm Silt 0.075mm-0.005mm Cobbles 12 in.-3 in. Medium Sand 2.0mm-0.425mm Clay <0.005mm Gravel 3 in.-4.75mm Fine Sand 0.425mm-0.075mm

COHESIVE SOILS COHESIONLESS SOILS COMPONENT % Unconfined Compressive Consistency Strength (Qu) (tsf) Relative Density ‘N’ Value Description Percent (%) Very Soft <0.25 Very Loose 0 – 3 Trace <5 Soft 0.25 – 0.5 Loose 4 – 9 Few 5 - 10 Firm 0.5 – 1.0 Medium Dense 10 – 29 Little 15 - 25 Stiff 1.0 – 2.0 Dense 30 – 49 Some 30 - 45 Very Stiff 2.0 – 4.0 Very Dense ≥ 50 Mostly 50 - 100 Hard > 4.0

PLASTICITY CHART ROCK QUALITY DESIGNATION (RQD)

Description RQD (%) Very Poor 0 – 25 Poor 25 – 50 Fair 50 – 75 Good 75 – 90 Excellent 90 – 100

G:\Admin\TEAMS\Geotech\AASHTO\Lab Forms\Symbols and Nomenclature gINT.doc BOREHOLE REPORT NO. B-1 Sheet 1 of 1

PROJECT NAME CLIENT Rokeby Road Improvements 84th to 98th Street Davis Design PROJECT NUMBER LOCATION B15-3105 Lincoln, Nebraska

Shelby Tube Split Spoon

ADDITIONAL DATA/ (ft) (ft) (%) (%) (tsf) (pcf) LOG MATERIAL DESCRIPTION LL/PI REMARKS DEPTH (USCS) NUMBER N-VALUE GRAPHIC BLOWS/6" UNC. STR. UNC. MOISTURE ELEVATION DRY DENSITY DRY SAMPLE TYPE SAMPLE CLASSIFICATION APPROX. SURFACE ELEV. (ft): 1389.0 0 GRAVEL 0.5' FILL

Fat clay (CH) U 19.0 91.9 Stiff, dark brown, moist, mostly fat clay, trace fine 1 sand to course sand and fine gravel 2.5' ALTERED PEORIA LOESS

Fat clay (CH) 1385 Stiff, light brown with grey, very moist, mostly fat U clay, trace fine sand, iron staining 1.7 25.8 95.9 4.5' 2 PEORIA LOESS 5

Lean clay (CL) U 32.6 87.4 Firm, light greyish brown, very moist, mostly lean 3 clay, trace fine sand, iron staining

1380 9.0' LOVELAND FORMATION SS 2-3-3 4 N=6 Lean to fat clay (CL/CH) 10 Firm, dark brown, very moist, mostly lean to fat clay, trace fine sand, iron staining

13.0' GLACIAL TILL 1375 Lean to fat clay (CL/CH) U Stiff, greyish brown, wet, mostly lean to fat clay, 5 trace fine sand, iron staining, manganese 15.0' 15 BASE OF BORING AT 15.0 FEET

WATER LEVEL OBSERVATIONS STARTED: 3/23/16 FINISHED: 3/23/16 OLSSON ASSOCIATES WD 13.0 ft DRILL CO.: OLSSON DRILL RIG: CME 55 601 P STREET, SUITE 200 IAD 13.2 ft after 0 Hrs LINCOLN, NEBRASKA 68508 DRILLER: JWY LOGGED BY: ZMM AD 11.4ft after 456Hrs METHOD: CONTINUOUS FLIGHT AUGER BOREHOLE REPORT NO. B-2 Sheet 1 of 1

PROJECT NAME CLIENT Rokeby Road Improvements 84th to 98th Street Davis Design PROJECT NUMBER LOCATION B15-3105 Lincoln, Nebraska

Shelby Tube Split Spoon

ADDITIONAL DATA/ (ft) (ft) (%) (%) (tsf) (pcf) LOG MATERIAL DESCRIPTION LL/PI REMARKS DEPTH (USCS) NUMBER N-VALUE GRAPHIC BLOWS/6" UNC. STR. UNC. MOISTURE ELEVATION DRY DENSITY DRY SAMPLE TYPE SAMPLE CLASSIFICATION APPROX. SURFACE ELEV. (ft): 1397.5 0 GRAVEL 0.5' FILL

Lean to fat clay (CL/CH) U 27.2 92.7 Stiff, dark brown, very moist, mostly lean to fat 1 1395 clay, trace fine to coarse sand and fine gravel

3.5'

U Fat clay (CH) 30.0 87.3 Firm, dark brown, very moist, mostly fat clay 2 5

6.5' ALTERED PEORIA LOESS U 3 1390 Lean to fat clay (CL/CH) Stiff, light greyish brown, very moist, mostly lean to fat clay, trace fine sand, iron staining 8.5' PEORIA LOESS SS 3-4-6 Lean clay (CL) 4 N=10 Stiff, light grey, very moist, mostly lean clay, trace 10 fine sand and silt, iron staining, manganese

1385

13.5' LOVELAND FORMATION U Lean clay (CL) 5 Firm, dark brown, wet, mostly lean clay, few silt, 15.0' 15 trace fine sand BASE OF BORING AT 15.0 FEET

WATER LEVEL OBSERVATIONS STARTED: 3/23/16 FINISHED: 3/23/16 OLSSON ASSOCIATES WD 12.5 ft DRILL CO.: OLSSON DRILL RIG: CME 55 601 P STREET, SUITE 200 IAD 11.6 ft after 0 Hrs LINCOLN, NEBRASKA 68508 DRILLER: JWY LOGGED BY: ZMM AD 12.8ft after 456Hrs METHOD: CONTINUOUS FLIGHT AUGER BOREHOLE REPORT NO. B-3 Sheet 1 of 1

PROJECT NAME CLIENT Rokeby Road Improvements 84th to 98th Street Davis Design PROJECT NUMBER LOCATION B15-3105 Lincoln, Nebraska

Shelby Tube Split Spoon

ADDITIONAL DATA/ (ft) (ft) (%) (%) (tsf) (pcf) LOG MATERIAL DESCRIPTION LL/PI REMARKS DEPTH (USCS) NUMBER N-VALUE GRAPHIC BLOWS/6" UNC. STR. UNC. MOISTURE ELEVATION DRY DENSITY DRY SAMPLE TYPE SAMPLE CLASSIFICATION APPROX. SURFACE ELEV. (ft): 1397.0 0 GRAVEL 0.5' FILL

Fat clay (CH) U CH 28.9 92.4 58/35 1395 Stiff, light to dark brown, very moist, mostly fat 1 clay, trace fine sand, iron staining 2.5' PEORIA LOESS

Lean clay (CL) Stiff, greyish brown, very moist, mostly lean clay, U trace fine sand, iron staining, manganese 1.4 27.1 94.9 2 5

Lean clay (CL) SS 1-2-2 1390 Firm, greyish brown, very moist, mostly lean clay, 3 N=4 few silt, trace fine sand, iron staining, manganese 8.0' LOVELAND FORMATION

Lean to fat clay (CL/CH) U 28.6 93.7 Firm, dark brown, very moist, mostly lean to fat 4 clay, few fine sand 10

11.0' GLACIAL TILL 1385

Lean to fat clay (CL/CH) Stiff, greyish brown, wet, mostly lean to fat clay, trace fine to medium sand, iron staining SS 3-5-6 5 N=11 15.0' 15 BASE OF BORING AT 15.0 FEET

WATER LEVEL OBSERVATIONS STARTED: 3/23/16 FINISHED: 3/23/16 OLSSON ASSOCIATES WD 13.5 ft DRILL CO.: OLSSON DRILL RIG: CME 55 601 P STREET, SUITE 200 IAD 13.5 ft after 0 Hrs LINCOLN, NEBRASKA 68508 DRILLER: JWY LOGGED BY: ZMM AD 12.3ft after 456Hrs METHOD: CONTINUOUS FLIGHT AUGER BOREHOLE REPORT NO. B-4 Sheet 1 of 2

PROJECT NAME CLIENT Rokeby Road Improvements 84th to 98th Street Davis Design PROJECT NUMBER LOCATION B15-3105 Lincoln, Nebraska Shelby Tube (5") - Shelby Tube Triax Sample Split Spoon ADDITIONAL DATA/ (ft) (ft) (%) (%) (tsf) (pcf) LOG MATERIAL DESCRIPTION LL/PI REMARKS DEPTH (USCS) NUMBER N-VALUE GRAPHIC BLOWS/6" UNC. STR. UNC. MOISTURE ELEVATION DRY DENSITY DRY SAMPLE TYPE SAMPLE CLASSIFICATION APPROX. SURFACE ELEV. (ft): 1391.5 0 GRAVEL 0.3' FILL 1390 Fat clay (CH) U 25.6 93.5 Firm, very dark brown, very moist, mostly fat clay, 1 trace fine to medium sand

Fat clay (CH) Firm, dark brown, wet, mostly fat clay, trace fine to U 29.2 93.4 medium sand 2 5.0' 5 GLACIAL TILL T 1385 3 Lean to fat clay (CL/CH) Firm, grey, wet, mostly lean to fat clay, trace fine sand, trace silty

Lean to fat clay (CL/CH) T Firm, light yellowish brown, wet, mostly lean to fat 21.1 106.1 clay, trace fine sand, trace silt 4 10

1380

Lean to fat clay (CL/CH) SS 3-3-3 Firm, light yellowish brown, wet, mostly lean to fat 5 N=6 clay, trace fine sand, trace silt 15

1375

Lean to fat clay (CL/CH) Firm, light yellowish brown, wet, mostly lean to fat U 27.7 94.5 clay, trace fine sand, trace silt 6 20 CONTINUED NEXT PAGE

WATER LEVEL OBSERVATIONS STARTED: 3/17/16 FINISHED: 3/17/16 OLSSON ASSOCIATES WD 3.3 ft DRILL CO.: OLSSON DRILL RIG: CME 55 601 P STREET, SUITE 200 IAD 3.8 ft after 0 Hrs LINCOLN, NEBRASKA 68508 DRILLER: JWY LOGGED BY: ZMM AD 3.1ft after 144Hrs METHOD: CONTINUOUS FLIGHT AUGER BOREHOLE REPORT NO. B-4 Sheet 2 of 2

PROJECT NAME CLIENT Rokeby Road Improvements 84th to 98th Street Davis Design PROJECT NUMBER LOCATION B15-3105 Lincoln, Nebraska Shelby Tube (5") - Shelby Tube Triax Sample Split Spoon ADDITIONAL DATA/ (ft) (ft) (%) (%) (tsf) (pcf) LOG MATERIAL DESCRIPTION LL/PI REMARKS DEPTH (USCS) NUMBER N-VALUE GRAPHIC BLOWS/6" UNC. STR. UNC. MOISTURE ELEVATION DRY DENSITY DRY SAMPLE TYPE SAMPLE CLASSIFICATION 20 GLACIAL TILL

1370

Lean to fat clay (CL/CH) SS 3-3-4 Firm, light yellowish brown, wet, mostly lean to fat 7 N=7 clay, trace fine sand, trace silt 25

1365

Lean to fat clay (CL/CH) U Firm, light yellowish brown, wet, mostly lean to fat 8 clay, trace fine sand, trace silt 30.0' 30 BASE OF BORING AT 30.0 FEET

WATER LEVEL OBSERVATIONS STARTED: 3/17/16 FINISHED: 3/17/16 OLSSON ASSOCIATES WD 3.3 ft DRILL CO.: OLSSON DRILL RIG: CME 55 601 P STREET, SUITE 200 IAD 3.8 ft after 0 Hrs LINCOLN, NEBRASKA 68508 DRILLER: JWY LOGGED BY: ZMM AD 3.1ft after 144Hrs METHOD: CONTINUOUS FLIGHT AUGER BOREHOLE REPORT NO. B-5 Sheet 1 of 2

PROJECT NAME CLIENT Rokeby Road Improvements 84th to 98th Street Davis Design PROJECT NUMBER LOCATION B15-3105 Lincoln, Nebraska

Shelby Tube Split Spoon

ADDITIONAL DATA/ (ft) (ft) (%) (%) (tsf) (pcf) LOG MATERIAL DESCRIPTION LL/PI REMARKS DEPTH (USCS) NUMBER N-VALUE GRAPHIC BLOWS/6" UNC. STR. UNC. MOISTURE ELEVATION DRY DENSITY DRY SAMPLE TYPE SAMPLE CLASSIFICATION APPROX. SURFACE ELEV. (ft): 1397.5 0 GRAVEL 0.5' FILL

Fat clay (CH) U 26.6 92.7 Stiff, brown to dark brown, very moist, mostly fat 1 1395 clay, trace fine sand

U Fat clay (CH) 28.5 89.7 Firm, brown to dark brown, very moist, mostly fat 2 clay, trace fine sand 5

U Fat clay (CH) 25.0 98.5 Stiff, light grey, very moist, mostly fat clay, trace 3 1390 fine sand 7.5' LOVELAND FORMATION

Lean to fat clay (CL/CH) Stiff, light reddish brown with grey, wet, mostly U lean to fat clay, few fine to coarse sand and trace 1.6 26.6 97.8 4 fine gravel 10.0' 10 GLACIAL TILL

1385

Fat clay (CH) Stiff, light greyish brown, wet, mostly fat clay, trace fine sand, iron staining SS 3-4-5 5 N=9 15

1380

Fat clay (CH) Stiff, light greyish brown, wet, mostly fat clay, U 1.2 26.9 97.0 trace fine sand, iron staining 6 20 CONTINUED NEXT PAGE

WATER LEVEL OBSERVATIONS STARTED: 3/23/16 FINISHED: 3/23/16 OLSSON ASSOCIATES WD 10.0 ft DRILL CO.: OLSSON DRILL RIG: CME 55 601 P STREET, SUITE 200 IAD 7.5 ft after 0 Hrs LINCOLN, NEBRASKA 68508 DRILLER: JWY LOGGED BY: ZMM AD 7.9ft after 456Hrs METHOD: CONTINUOUS FLIGHT AUGER BOREHOLE REPORT NO. B-5 Sheet 2 of 2

PROJECT NAME CLIENT Rokeby Road Improvements 84th to 98th Street Davis Design PROJECT NUMBER LOCATION B15-3105 Lincoln, Nebraska

Shelby Tube Split Spoon

ADDITIONAL DATA/ (ft) (ft) (%) (%) (tsf) (pcf) LOG MATERIAL DESCRIPTION LL/PI REMARKS DEPTH (USCS) NUMBER N-VALUE GRAPHIC BLOWS/6" UNC. STR. UNC. MOISTURE ELEVATION DRY DENSITY DRY SAMPLE TYPE SAMPLE CLASSIFICATION 20 GLACIAL TILL

1375

23.5'

Lean to fat clay (CL/CH) SS 4-5-6 Stiff, light greyish brown, wet, mostly lean to fat 7 N=11 clay, few fine to medium sand, iron staining 25

1370

Lean to fat clay (CL/CH) U Stiff, light greyish brown, wet, mostly lean to fat 8 clay, few fine to medium sand, iron staining 30.0' 30 BASE OF BORING AT 30.0 FEET

WATER LEVEL OBSERVATIONS STARTED: 3/23/16 FINISHED: 3/23/16 OLSSON ASSOCIATES WD 10.0 ft DRILL CO.: OLSSON DRILL RIG: CME 55 601 P STREET, SUITE 200 IAD 7.5 ft after 0 Hrs LINCOLN, NEBRASKA 68508 DRILLER: JWY LOGGED BY: ZMM AD 7.9ft after 456Hrs METHOD: CONTINUOUS FLIGHT AUGER BOREHOLE REPORT NO. B-6 Sheet 1 of 2

PROJECT NAME CLIENT Rokeby Road Improvements 84th to 98th Street Davis Design PROJECT NUMBER LOCATION B15-3105 Lincoln, Nebraska

Shelby Tube Split Spoon

ADDITIONAL DATA/ (ft) (ft) (%) (%) (tsf) (pcf) LOG MATERIAL DESCRIPTION LL/PI REMARKS DEPTH (USCS) NUMBER N-VALUE GRAPHIC BLOWS/6" UNC. STR. UNC. MOISTURE ELEVATION DRY DENSITY DRY SAMPLE TYPE SAMPLE CLASSIFICATION APPROX. SURFACE ELEV. (ft): 1401.0 0 GRAVEL 0.5' 1400 FILL

Fat clay (CH) U 24.1 98.7 Stiff, light to dark brown, moist, mostly fat clay, 1 few fine sand

U Fat clay (CH) 33.2 84.9 Firm, olive to dark brown, very moist, mostly fat 2 clay, trace fine sand, trace roots 5 5.5' 1395 GLACIAL TILL

Fat clay (CH) U Firm, greyish brown, wet, mostly fat clay, trace 3 fine to medium sand, iron staining 8.0'

Lean to fat clay (CL/CH) Stiff, greyish brown, wet, mostly lean to fat clay, SS 3-4-6 trace fine to coarse sand 4 N=10 10

1390

13.5'

U Fat clay (CH) 0.6 22.4 103.5 Firm, grey, wet, mostly fat clay, trace fine to 5 coarse sand, calcium 15

1385

Fat clay (CH) Stiff, light greyish brown, wet, mostly fat clay, SS 4-8-10 trace fine to coarse sand, calcium 6 N=18 20 CONTINUED NEXT PAGE

WATER LEVEL OBSERVATIONS STARTED: 3/17/16 FINISHED: 3/17/16 OLSSON ASSOCIATES WD 13.5 ft DRILL CO.: OLSSON DRILL RIG: CME 55 601 P STREET, SUITE 200 IAD 20.5 ft after 0 Hrs LINCOLN, NEBRASKA 68508 DRILLER: JWY LOGGED BY: ZMM AD 5.6ft after 456Hrs METHOD: CONTINUOUS FLIGHT AUGER BOREHOLE REPORT NO. B-6 Sheet 2 of 2

PROJECT NAME CLIENT Rokeby Road Improvements 84th to 98th Street Davis Design PROJECT NUMBER LOCATION B15-3105 Lincoln, Nebraska

Shelby Tube Split Spoon

ADDITIONAL DATA/ (ft) (ft) (%) (%) (tsf) (pcf) LOG MATERIAL DESCRIPTION LL/PI REMARKS DEPTH (USCS) NUMBER N-VALUE GRAPHIC BLOWS/6" UNC. STR. UNC. MOISTURE ELEVATION DRY DENSITY DRY SAMPLE TYPE SAMPLE CLASSIFICATION 20 GLACIAL TILL 1380

23.5'

U Lean to fat clay (CL) 25.4 100.3 Very stiff, yellowish brown with grey, wet, mostly 7 lean to fat clay, trace fine to coarse sand, iron 25 staining, manganese 1375

Lean to fat clay (CL) SS 6-16-15 Very stiff, yellowish brown with grey, wet, mostly 8 N=31 lean to fat clay, trace fine to coarse sand, iron 30.0' 30 staining, manganese BASE OF BORING AT 30.0 FEET

WATER LEVEL OBSERVATIONS STARTED: 3/17/16 FINISHED: 3/17/16 OLSSON ASSOCIATES WD 13.5 ft DRILL CO.: OLSSON DRILL RIG: CME 55 601 P STREET, SUITE 200 IAD 20.5 ft after 0 Hrs LINCOLN, NEBRASKA 68508 DRILLER: JWY LOGGED BY: ZMM AD 5.6ft after 456Hrs METHOD: CONTINUOUS FLIGHT AUGER BOREHOLE REPORT NO. B-7 Sheet 1 of 2

PROJECT NAME CLIENT Rokeby Road Improvements 84th to 98th Street Davis Design PROJECT NUMBER LOCATION B15-3105 Lincoln, Nebraska

Shelby Tube Split Spoon

ADDITIONAL DATA/ (ft) (ft) (%) (%) (tsf) (pcf) LOG MATERIAL DESCRIPTION LL/PI REMARKS DEPTH (USCS) NUMBER N-VALUE GRAPHIC BLOWS/6" UNC. STR. UNC. MOISTURE ELEVATION DRY DENSITY DRY SAMPLE TYPE SAMPLE CLASSIFICATION APPROX. SURFACE ELEV. (ft): 1414.0 0 GRAVEL 0.5' FILL

Lean to fat clay (CL/CH) U 21.3 104.3 Stiff, brown to dark brown, moist, mostly lean to 1 fat clay, few fine sand, iron staining

3.5' 1410 ALTERED PEORIA LOESS U Fat clay (CH) 2 Firm, light greyish brown, very moist, mostly fat 5.0' 5 clay, iron staining, manganese PEORIA LOESS

Lean clay (CL) SS 3-2-4 Firm, grey, very moist, mostly lean clay, trace fine 3 N=6 sand and silt, iron staining, manganese

1405 9.0' U LOVELAND FORMATION 0.8 28.8 95.4 4 Lean to fat clay (CL/CH) 10 Firm, dark reddish brown, very moist, mostly lean to fat clay, few fine sand, iron staining, manganese

13.5' 1400 GLACIAL TILL SS 3-3-5 Lean to fat clay (CL/CH) 5 N=8 Firm, greyish brown, wet, mostly lean to fat clay, 15 trace fine sand, iron staining

Lean to fat clay (CL/CH) 1395 Very stiff, greyish brown, wet, mostly lean to fat U 17.5 113.4 clay, few fine sand, iron staining 6 20 CONTINUED NEXT PAGE

WATER LEVEL OBSERVATIONS STARTED: 3/23/16 FINISHED: 3/23/16 OLSSON ASSOCIATES WD 13.5 ft DRILL CO.: OLSSON DRILL RIG: CME 55 601 P STREET, SUITE 200 IAD 22.0 ft after 0 Hrs LINCOLN, NEBRASKA 68508 DRILLER: JWY LOGGED BY: ZMM AD Not Performed METHOD: CONTINUOUS FLIGHT AUGER BOREHOLE REPORT NO. B-7 Sheet 2 of 2

PROJECT NAME CLIENT Rokeby Road Improvements 84th to 98th Street Davis Design PROJECT NUMBER LOCATION B15-3105 Lincoln, Nebraska

Shelby Tube Split Spoon

ADDITIONAL DATA/ (ft) (ft) (%) (%) (tsf) (pcf) LOG MATERIAL DESCRIPTION LL/PI REMARKS DEPTH (USCS) NUMBER N-VALUE GRAPHIC BLOWS/6" UNC. STR. UNC. MOISTURE ELEVATION DRY DENSITY DRY SAMPLE TYPE SAMPLE CLASSIFICATION 20 GLACIAL TILL

1390 Lean to fat clay (CL/CH) U Stiff, greyish brown, wet, mostly lean to fat clay, 7 trace fine sand, iron staining, manganese 25

1385 Lean to fat clay (CL/CH) SS 5-6-8 Stiff, greyish brown, wet, mostly lean to fat clay, 8 N=14 trace fine sand, iron staining, manganese 30.0' 30 BASE OF BORING AT 30.0 FEET

WATER LEVEL OBSERVATIONS STARTED: 3/23/16 FINISHED: 3/23/16 OLSSON ASSOCIATES WD 13.5 ft DRILL CO.: OLSSON DRILL RIG: CME 55 601 P STREET, SUITE 200 IAD 22.0 ft after 0 Hrs LINCOLN, NEBRASKA 68508 DRILLER: JWY LOGGED BY: ZMM AD Not Performed METHOD: CONTINUOUS FLIGHT AUGER BOREHOLE REPORT NO. B-8 Sheet 1 of 1

PROJECT NAME CLIENT Rokeby Road Improvements 84th to 98th Street Davis Design PROJECT NUMBER LOCATION B15-3105 Lincoln, Nebraska

Shelby Tube Split Spoon

ADDITIONAL DATA/ (ft) (ft) (%) (%) (tsf) (pcf) LOG MATERIAL DESCRIPTION LL/PI REMARKS DEPTH (USCS) NUMBER N-VALUE GRAPHIC BLOWS/6" UNC. STR. UNC. MOISTURE ELEVATION DRY DENSITY DRY SAMPLE TYPE SAMPLE CLASSIFICATION APPROX. SURFACE ELEV. (ft): 1433.0 0 GRAVEL 0.5' FILL

Fat clay (CH) U 1.1 25.2 89.1 Stiff, dark brown, very moist, mostly fat clay, trace 1 fine sand 1430 3.5' ALTERED PEORIA LOESS U 24.3 99.5 Fat clay (CH) 2 Stiff, greyish brown, moist, mostly fat clay, trace 5.0' 5 fine sand, iron staining, manganese PEORIA LOESS

Lean clay (CL) U CL 1.5 26.8 94.5 42/22 Stiff, greyish brown, very moist, mostly lean clay, 3 few fine sand, iron staining, manganese 1425

Lean clay (CL) SS 3-4-5 Firm, greyish brown, very moist, mostly lean clay, 4 N=9 few silt, few fine sand, iron staining, manganese 10

1420

U Lean clay (CL) 0.6 32.5 89.2 Firm, greyish brown, wet, mostly lean clay, little 5 silt, few fine sand, iron staining, manganese 15.0' 15 BASE OF BORING AT 15.0 FEET

WATER LEVEL OBSERVATIONS STARTED: 3/23/16 FINISHED: 3/23/16 OLSSON ASSOCIATES WD 14.0 ft DRILL CO.: OLSSON DRILL RIG: CME 55 601 P STREET, SUITE 200 IAD 13.5 ft after 0 Hrs LINCOLN, NEBRASKA 68508 DRILLER: JWY LOGGED BY: ZMM AD 13.1ft after 456Hrs METHOD: CONTINUOUS FLIGHT AUGER BOREHOLE REPORT NO. B-9 Sheet 1 of 1

PROJECT NAME CLIENT Rokeby Road Improvements 84th to 98th Street Davis Design PROJECT NUMBER LOCATION B15-3105 Lincoln, Nebraska

Shelby Tube Split Spoon

ADDITIONAL DATA/ (ft) (ft) (%) (%) (tsf) (pcf) LOG MATERIAL DESCRIPTION LL/PI REMARKS DEPTH (USCS) NUMBER N-VALUE GRAPHIC BLOWS/6" UNC. STR. UNC. MOISTURE ELEVATION DRY DENSITY DRY SAMPLE TYPE SAMPLE CLASSIFICATION APPROX. SURFACE ELEV. (ft): 1432.0 0 GRAVEL 0.5' FILL

Fat clay (CH) U 25.3 93.8 1430 Stiff, dark brown, very moist, mostly fat clay, few 1 fine sand 2.5' PEORIA LOESS

Lean to fat clay (CL/CH) Stiff, grey, very moist, mostly lean to fat clay, few U silt, trace fine sand, iron staining, manganese 1.2 27.2 94.8 2 5

6.0'

Lean clay (CL) SS 2-3-3 1425 Firm, grey, very moist, mostly lean clay, few silt, 3 N=6 trace fine sand, iron staining, manganese

8.5'

U Silty lean clay (CL/ML) 30.4 90.6 Firm, grey, very moist, mostly silty lean clay, trace 4 fine sand, iron staining, manganese 10

1420 12.5' LOVELAND FORMATION

Fat clay (CH) Very stiff, dark reddish grey, wet, mostly fat clay, trace fine sand, iron staining U 5 15.0' 15 BASE OF BORING AT 15.0 FEET

WATER LEVEL OBSERVATIONS STARTED: 3/23/16 FINISHED: 3/23/16 OLSSON ASSOCIATES WD 12.5 ft DRILL CO.: OLSSON DRILL RIG: CME 55 601 P STREET, SUITE 200 IAD 12.5 ft after 0 Hrs LINCOLN, NEBRASKA 68508 DRILLER: JWY LOGGED BY: ZMM AD 10.9ft after 456Hrs METHOD: CONTINUOUS FLIGHT AUGER qc [T/ft^2] fs [T/ft^2] u2 [lb/ft^2] Rf [%] Classification by 0 20 40 60 80 100 0 0.5 1.0 1.5 2.0-1000 0 1000 2000 3000 40000 2 4 6 8 10 Robertson 1986 0 Depth [ft] Depth 5

Clay (3) 10

15

Silty clay to clay (4) Clay (3)

Silty clay to clay (4) 20

Clayey silt to silty clay (5) 25 Clay (3) Sandy silt to clayey silt (6)

Clayey silt to silty clay (5) 30

35

40

45

50

Location: Position: Ground level: Test no: U2 Lincoln, Nebraska 1391.50 EC-4 Project ID: Client: Date: Scale: B15-3105 City of Lincoln, Nebraska 3/17/2016 1 : 100 Cone No: 4524 Project: Page: Fig: Tip area [cm2]: 10 Rokeby Road Improvements 84th to 98th Street 1/1 1 File: Sleeve area [cm2]: 150 4a.cpt Su(qc) [T/ft^2] N60 [] OCR(qt) [] Fi [deg] ID [%] Classification by 0 1 2 3 4 5 6 0 10 20 30 40 50 0 10 20 30 40 50 0 10 20 30 40 50 0 20 40 60 80 100 Robertson 1986 0 310.64 > 56.56 > Depth [ft] Depth 5

Clay (3) 10

15

Silty clay to clay (4) Clay (3)

Silty clay to clay (4) 20

Clayey silt to silty clay (5) 25 Clay (3) Sandy silt to clayey silt (6)

Clayey silt to silty clay (5) 30

35

40

45

50

Location: Position: Ground level: Test no: U2 Lincoln, Nebraska 1391.50 EC-4 Project ID: Client: Date: Scale: B15-3105 City of Lincoln, Nebraska 3/17/2016 1 : 100 Cone No: 4524 Project: Page: Fig: Tip area [cm2]: 10 Rokeby Road Improvements 84th to 98th Street 1/1 2 File: Sleeve area [cm2]: 150 4a.cpt qc [T/ft^2] fs [T/ft^2] u2 [lb/ft^2] Rf [%] Classification by 0 20 40 60 80 100 0 0.5 1.0 1.5 2.0-1000 -500 0 500 10000 2 4 6 8 10 Robertson 1986 0 Depth [ft] Depth 5

Clay (3)

10

15 Silty clay to clay (4) Clayey silt to silty clay (5) Silty clay to clay (4) Clayey silt to silty clay (5) Clay (3) 20 Clayey silt to silty clay (5) Silty clay to clay (4)

Clayey silt to silty clay (5) 25 1048.4772 >

30

35

40

45

50

Location: Position: Ground level: Test no: U2 Lincoln, Nebraska 1389.01 EC-6 Project ID: Client: Date: Scale: B15-3105 City of Lincoln, Nebraska 3/17/2016 1 : 100 Cone No: 4524 Project: Page: Fig: Tip area [cm2]: 10 Rokeby Road Improvements 84th to 98th Street 1/1 3 File: Sleeve area [cm2]: 150 6.cpt Su(qc) [T/ft^2] N60 [] OCR(qt) [] Fi [deg] ID [%] Classification by 0 1 2 3 4 5 6 0 10 20 30 40 50 0 10 20 30 40 50 0 10 20 30 40 50 0 20 40 60 80 100 Robertson 1986 0 251.41 > 79.98 > Depth [ft] Depth 5

Clay (3)

10

15 Silty clay to clay (4) Clayey silt to silty clay (5) Silty clay to clay (4) Clayey silt to silty clay (5) Clay (3) 20 Clayey silt to silty clay (5) Silty clay to clay (4)

Clayey silt to silty clay (5) 25

30

35

40

45

50

Location: Position: Ground level: Test no: U2 Lincoln, Nebraska 1389.01 EC-6 Project ID: Client: Date: Scale: B15-3105 City of Lincoln, Nebraska 3/17/2016 1 : 100 Cone No: 4524 Project: Page: Fig: Tip area [cm2]: 10 Rokeby Road Improvements 84th to 98th Street 1/1 4 File: Sleeve area [cm2]: 150 6.cpt

APPENDIX C Summary of Laboratory Test Results

OLSSON ASSOCIATES 601 P STREET, SUITE 200 SUMMARY OF LABORATORY RESULTS LINCOLN, NEBRASKA 68508 PAGE 1 OF 2

PROJECT NAME: Rokeby Road Improvements 84th to 98th Street CLIENT: Davis Design PROJECT NUMBER: B15-3105 PROJECT LOCATION: Lincoln, Nebraska MOISTURE DRY ATTERBERG LIMITS SAMPLE VOID SATURATION UNCONFINED STRAIN BORING SAMPLE CONTENT DENSITY USCS DEPTH RATIO (%) STRENGTH (%) P-200 NUMBER I.D. (%) (pcf) LIQUID PLASTIC PLASTIC CLASS. (ft) (tsf) LIMIT LIMIT INDEX B-1 U-1 1.0 - 2.5' 19.0 91.9 0.834 61.7 B-1 U-2 3.5 - 5.0' 25.8 95.9 0.758 91.8 1.7 6.6 B-1 U-3 6.0 - 7.5' 32.6 87.4 0.928 94.9 B-2 U-1 1.0 - 2.5' 27.2 92.7 0.817 89.8 B-2 U-2 3.5 - 5.0' 30.0 87.3 0.930 87.0 B-3 U-1 1.0 - 2.5' 28.9 92.4 0.824 94.6 58 23 35 CH B-3 U-2 3.5 - 5.0' 27.1 94.9 0.776 94.2 1.4 6.1 B-3 U-4 8.5 - 10.0' 28.6 93.7 0.798 96.7 B-4 U-1 1.0 - 2.5' 25.6 93.5 0.802 86.2 B-4 U-2 3.5 - 5.0' 29.2 93.4 0.805 97.9 B-4 T-4 8.0 - 10.0' 21.1 106.1 0.588 96.9 B-4 U-6 18.5 - 20.0' 27.7 94.5 0.784 95.3 B-5 U-1 1.0 - 2.5' 26.6 92.7 0.819 87.8 B-5 U-2 3.5 - 5.0' 28.5 89.7 0.878 87.5 B-5 U-3 6.0 - 7.5' 25.0 98.5 0.710 94.9 B-5 U-4 8.5 - 10.0' 26.6 97.8 0.723 99.4 1.6 6.1 B-5 U-6 18.5 - 20.0' 26.9 97.0 0.737 98.5 1.2 3.1 B-6 U-1 1.0 - 2.5' 24.1 98.7 0.707 92.0 B-6 U-2 3.5 - 5.0' 33.2 84.9 0.984 91.1 B-6 U-5 13.5 - 15.0' 22.4 103.5 0.629 96.1 0.6 2.5 B-6 U-7 23.5 - 25.0' 25.4 100.3 0.681 100.0 B-7 U-1 1.0 - 2.5' 21.3 104.3 0.616 93.2 B-7 U-4 8.5 - 10.0' 28.8 95.4 0.768 100.0 0.8 7.0 B-7 U-6 18.5 - 20.0' 17.5 113.4 0.486 97.5 B-8 U-1 1.0 - 2.5' 25.2 89.1 0.891 76.3 1.1 2.0 B-8 U-2 3.5 - 5.0' 24.3 99.5 0.693 94.5 B-8 U-3 6.0 - 7.5' 26.8 94.5 0.784 92.5 1.5 7.4 42 20 22 CL B-8 U-5 13.5 - 15.0' 32.5 89.2 0.890 98.6 0.6 3.3 B-9 U-1 1.0 - 2.5' 25.3 93.8 0.798 85.7 B-9 U-2 3.5 - 5.0' 27.2 94.8 0.778 94.3 1.2 2.8 OLSSON ASSOCIATES 601 P STREET, SUITE 200 SUMMARY OF LABORATORY RESULTS LINCOLN, NEBRASKA 68508 PAGE 2 OF 2

PROJECT NAME: Rokeby Road Improvements 84th to 98th Street CLIENT: Davis Design PROJECT NUMBER: B15-3105 PROJECT LOCATION: Lincoln, Nebraska MOISTURE DRY ATTERBERG LIMITS SAMPLE VOID SATURATION UNCONFINED STRAIN BORING SAMPLE CONTENT DENSITY USCS DEPTH RATIO (%) STRENGTH (%) P-200 NUMBER I.D. (%) (pcf) LIQUID PLASTIC PLASTIC CLASS. (ft) (tsf) LIMIT LIMIT INDEX B-9 U-4 8.5 - 10.0' 30.4 90.6 0.860 95.4 OLSSON ASSOCIATES 601 P STREET, SUITE 200 CONSOLIDATION TEST LINCOLN, NEBRASKA 68508

PROJECT NAME: Rokeby Road Improvements 84th to 98th Street CLIENT: Davis Design PROJECT NUMBER: B15-3105 PROJECT LOCATION: Lincoln, Nebraska

0.95

0.90

0.85

0.80

0.75

0.70

VOID RATIO 0.65

0.60

0.55

0.50

0.45 0.1 1 STRESS, tsf 10 100

Boring No: B-1 Initial Water Content (%): 32.6 Est. Preconsolidated Stress (tsf): 1.7

U-3 Sample ID: Final Water Content (%): 22.8 Laboratory Water Type: Distilled Water

87.4 NA Sample Depth: 6.0 - 7.5' Initial Dry Density (pcf): Test Procedure Method:

4/15/16 Start Date: Initial Void Ratio: 0.930 Interpretation Procedure: NA

Technician: DDK Final Void Ratio: 0.560 Stress at Inundation (psf): 50.0

Apparatus: NA Initial Degree of Saturation (%): 94.9 Specimen Trimming Method: Turntable

Specific Gravity: 2.7 Final Degree of Saturation (%): 100.0 ATTERBERG LIMITS LL PL PI Classification

Sample Description: Peoria Loess: Light greyish brown, Lean clay Notes: (CL) OLSSON ASSOCIATES 601 P STREET, SUITE 200 CONSOLIDATION TEST LINCOLN, NEBRASKA 68508

PROJECT NAME: Rokeby Road Improvements 84th to 98th Street CLIENT: Davis Design PROJECT NUMBER: B15-3105 PROJECT LOCATION: Lincoln, Nebraska

0.80

0.75

0.70

0.65

0.60 VOID RATIO

0.55

0.50

0.45 0.1 1 STRESS, tsf 10 100

Boring No: B-4 Initial Water Content (%): 27.7 Est. Preconsolidated Stress (tsf): 2.2

U-6 Sample ID: Final Water Content (%): 20.2 Laboratory Water Type: Distilled Water

94.5 NA Sample Depth: 18.5 - 20.0' Initial Dry Density (pcf): Test Procedure Method:

4/15/16 Start Date: Initial Void Ratio: 0.780 Interpretation Procedure: NA

Technician: DDK Final Void Ratio: 0.530 Stress at Inundation (psf): 50.0

Apparatus: NA Initial Degree of Saturation (%): 95.4 Specimen Trimming Method: Turntable

Specific Gravity: 2.7 Final Degree of Saturation (%): 100.0 ATTERBERG LIMITS LL PL PI Classification

Sample Description: Glacial Till: Light yellowish brown, Lean clay Notes: (CL) OLSSON ASSOCIATES MOISTURE-DENSITY 601 P STREET, SUITE 200 RELATIONSHIP LINCOLN, NEBRASKA 68508

PROJECT NAME: Rokeby Road Improvements 84th to 98th Street CLIENT: Davis Design PROJECT NUMBER: B15-3105 PROJECT LOCATION: Lincoln, Nebraska 140 Date: 4/22/16

698D 135 Type of Test:

Sample Identification: Bulk Sample: B-6 (1-5')

130

Sample Description: Fill: Dark brown, Fat clay (CH)

125

TEST RESULTS 120 Maximum Dry Density 96.6 PCF Optimum Water Content 22.3 %

115 ATTERBERG LIMITS

LL PL PI Classification 110 51 22 29 CH

105 DRY DENSITY, pcf DENSITY, DRY Curves of 100% Saturation for Specific Gravity Equal to: 2.70

100

95

90

85

80

75 0 5 10 15 20 25 30 35 40 45

WATER CONTENT, % OLSSON ASSOCIATES MOISTURE-DENSITY 601 P STREET, SUITE 200 RELATIONSHIP LINCOLN, NEBRASKA 68508

PROJECT NAME: Rokeby Road Improvements 84th to 98th Street CLIENT: Davis Design PROJECT NUMBER: B15-3105 PROJECT LOCATION: Lincoln, Nebraska 140 Date: 4/9/16

698D 135 Type of Test:

Sample Identification: Bulk Sample: B-1 (4.5-9')

130

Sample Description: Peoria Loess: Light greyish brown, Lean clay (CL) 125

TEST RESULTS 120 Maximum Dry Density 102.0 PCF Optimum Water Content 20.4 %

115 ATTERBERG LIMITS

LL PL PI Classification 110 45 20 25 CL

105 DRY DENSITY, pcf DENSITY, DRY Curves of 100% Saturation for Specific Gravity Equal to: 2.70

100

95

90

85

80

75 0 5 10 15 20 25 30 35 40 45

WATER CONTENT, %

ATTACHMENT 4: STORMWATER POLLUTION PREVENTION PLAN (SWPPP) DOCUMENT

STORM WATER POLLUTION PREVENTION PLAN

FOR

CITY OF LINCOLN ROKEBY ROAD; S. 84TH STREET TO S. 94TH STREET 16-INCH WATER MAIN PROJECT

AT

LINCOLN, NEBRASKA

Prepared for:

City of Lincoln

Prepared by:

Olsson Associates 601 P Street Lincoln, NE 68508 Phone: 402.474.6311 Fax: 402.474.5160

OA Project No. 016-2781

May 2017

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 1

TABLE OF CONTENTS

Section Page SWPPP Cover ...... 1 Table of Contents ...... 2

I. SUMMARYOF PERMIT AND PROGRAM REQUIREMENTS ...... 4 A. General Permit Information ...... 4 B. Agency Information for Storm Water Pre-Construction Meeting ...... 5 C. Public Posting ...... 5 D. Retention of Records ...... 5 E. Contractor/Sub-Contractor List ...... 5 F. Contractor/Sub-Contractor Certification Form...... 5 G. Inspections ...... 5 H. SWPPP Updates and Amendments ...... 6 I. Discharge of Petroleum Products or Hazardous Waste ...... 6 J. Notice of Termination ...... 6 K. General Contractors Responsibilities ...... 7 L. Log of Construction Activity ...... 7 M. Agency Storm Water inspections ...... 7

II. INTRODUCTION ...... 7 A. Purpose ...... 7 B. Scope ...... 8

III. PROJECT DESCRIPTION ...... 8

IV. SITE DESCRIPTION ...... 9 A. Site Location ...... 9 B. Site Topography ...... 9 C. Rainfall Information ...... 9 D. Site Soils...... 9 E. Total Site Area, Area to be Disturbed, and Runoff Coefficient...... 10 F. Receiving Surface Waters ...... 10 G. Erosion and Sedimentation Control Plan ...... 10 H. Environmental Permits – Other than NPDES, Storm Water, and/or Sediment Control ...... 10 I. Threatened and Endangered Species ...... 10 J. Historic Properties ...... 10

V. STORM WATER POLLUTION PREVENTION MEASURES AND CONTROLS ...... 10 A. Erosion and Sediment Controls ...... 10 1. Minimization of Disturbed Area ...... 10 2. Soil Stabilization ...... 10 3. Structural Controls ...... 12 B. Other Pollutant Controls ...... 13 1. Dust Control ...... 13 2. Dewatering ...... 13 3. Solid Waste Disposal ...... 14 4. Sanitary Facilities ...... 14 5. Non-Storm Water Discharges ...... 14 6. Concrete Waste from Concrete Ready-Mix Trucks ...... 14 7. Mason's Area...... 15 8. Fuel Tanks ...... 15 9. Hazardous Material Management and Spill Reporting Plan ...... 15 10. Long-Term Pollutant Controls ...... 16

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 2 Section Page

C. “Best Management Practices” (BMPs) ...... 16 D. Material Storage, Borrow, or Disposal Areas Outside of Permitted Limits of Disturbance ...... 17

VI. LOCAL PLANS ...... 18

VII. INSPECTIONS AND SYSTEM MAINTENANCE ...... 18 A. Construction Exit and Track Out ...... 18 B. Erosion Control Devices ...... 18 C. Sediment Control Devices ...... 18 D. Material Storage Area ...... 18 E. Vegetation ...... 19 F. Discharge Points...... 19 G. Off-site or Special Project Areas ...... 19 H. Sediment Releases ...... 19

Appendices Table of Contents...... 20

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 3 I. SUMMARY OF PERMIT AND PROGRAM REQUIREMENTS

The Storm Water Pollution Prevention Plan (SWPPP) includes, but is not limited to, the Erosion Control Plans, the Notice of Intent, Transfer forms, Permit Authorization, General Permit, Notice of Termination, all records of inspections and activities which are created during the course of the project, and other documents as may be included by reference to this SWPPP. Changes, modifications, revisions, additions, or deletions shall become part of this SWPPP as they occur.

Note: The General Contractor must complete the Contact List included in Appendix A and maintain the list in the SWPPP Binder until the storm water permit is terminated.

Note: The General Contractor (GC) must certify this SWPPP by signing the GC SWPPP certification letter included in Appendix B. All signed certifications must be kept in the jobsite SWPPP Binder and be available for inspection on the construction site. Signed documents including permits, certifications and qualification forms can not be modified or revised in the field.

Note: The Owner is the applicant for this project and must fill out and submit the NPDES Permit Notice of Intent (NOI).

The General Contractor and all subcontractors involved with a construction activity that disturbs site soil or who implement a pollutant control measure identified in the SWPPP, or otherwise required, must comply with the following requirements of the National Pollutant Discharge Elimination System (NPDES) General Permit (“General Permit”), Nebraska Department of Environmental Quality (NDEQ) and any local governing agency having jurisdiction concerning NPDES, storm water, erosion and sedimentation control:

A. General Permit Information

1. Permit Information:

Unless otherwise notified by the NDEQ discharge authorization will be granted 7 days after the NDEQ receives the complete NOI form.

A project location/vicinity map is located in Appendix C.

The Notice of Intent is located in Appendix D.

2. Permit transfer information:

The permittee may transfer all or any part of the project property subject to the permit.

3. Waiting Period:

Ground-disturbing activities cannot begin until Authorization by Nebraska Department of Environmental Quality. In most cases Authorization will occur within 7 days after submittal of a complete NOI Package to the appropriate governing agency.

4. Permit Expiration:

The applicable General Permit expires 5 years following the permit issued date. A copy of the General Permit is located in Appendix M.

5. Permit modification:

A permit modification is required prior to land disturbing activity in non-permitted areas. The General Contractor must contact the Owner’s Engineer as soon as a need to work in non-permitted areas is identified. Work in non-permitted areas may not proceed until written approval is provided by the governing agency.

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 4 6. Off-Site Permits:

Note: For purposes of this SWPPP and associated storm water permit, ‘off-site’ is defined as any and all areas beyond the project permitted limits of disturbance.

Any areas outside the limits of disturbance acquired for use by the General Contractor or a subcontractor of the General Contractor must be managed in accordance with Section V. D. of this specification.

Off-Site storm water permits are not part of this project.

7. Governing Agency:

The following agency or agencies have governing authority for storm water-related regulations and permits and must receive a complete NOI Package.

Nebraska Department of Environmental Quality Water Quality Division Storm Water Suite 400, The Atrium 1200 N Street PO Box 98922 Lincoln, NE 68509-8922 402.471.2186

B. Agency Information for Storm Water Pre-Construction Meeting Section Not Used

C. Public Posting (Including SWPPP Information Sign) Install the SWPPP Information Sign and have Site Maps and Detail Sheets on the project site readily available upon request. The following information must be posted near the construction exit in a prominent place for public viewing until termination of permit coverage has been obtained by filing the Notice of Termination (NOT): 1) Notice of Intent; 2) Permit Authorization; 3) Construction Site Notice (found in Appendix E); and 4) The location of the SWPPP on site. Reference the Entrance Sign (SWPPP Information Sign) detail for proper posting of documents.

D. Retention of Records A complete copy of the SWPPP, including copies of all inspection reports, plan revisions, etc., must be retained at the project site at all times during the duration of the project (until NOT is filed) and kept in the permanent project records of the General Contractor for at least three years following submission of the Notice of Termination (NOT).

E. Contractor/Sub-Contractor List The General Contractor must provide names and addresses of all subcontractors working on this project who will be involved with the major construction activities that disturb site soil or otherwise affect BMP implementation. This information must be kept with the SWPPP.

F. Contractor/Sub-Contractor Certification Form The General Contractor and all contractors and/or subcontractors that will implement, maintain and/or impact the pollution control measures in the SWPPP and/or are involved in ground- disturbing activities on the site must sign a copy of the Contractor certification included in Appendix F. An authorized representative from each company on the construction project must sign this form certifying that company representatives understand the General Permit authorizing storm water discharges during construction. This information must be kept in the SWPPP Binder.

G. Inspections Inspections must be conducted at least once every fourteen (14) calendar days, and within 24 hours of the end of a storm event of 0.5 inches or greater of precipitation in a 24-hour period. Any

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 5 delay in the replacement or maintenance of nonfunctional BMPs beyond seven (7) calendar days shall be documented in the SWPPP with sufficient detail as to explain the reason for the delay.

The SWPPP, including the best management practices implemented on the jobsite, shall be modified as needed to reduce or prevent pollutants from discharging from the site. Modifications to BMPs that change a hydraulic design component (diversions, basins, etc.) must first be approved by the Owner’s Engineer.

The inspector must be a person familiar with the site, the nature of the major construction activities, and qualified to evaluate both overall system performance and individual component performance. The inspector must either be someone empowered to implement BMPs in order to increase effectiveness to an acceptable level or someone with the authority to cause such things to happen. Additionally, the inspector shall be properly authorized in accordance with the applicable General Permit to conduct the certified site storm water inspections.

H. SWPPP Updates and Amendments The General Contractor must update the SWPPP and Site Maps to reflect the progress of construction activities and general changes to the project site. SWPPP contact and contractor information and the record of site stabilization activities log must be maintained by the General Contractor throughout the project.

BMPs that do not impact the hydraulic design of the site may be modified or added by the General Contractor, and site maps updated accordingly, as needs arise. Examples of BMPs that do not typically impact the hydraulic design of the site include silt fence, silt dike, wattles, construction exit and various forms of temporary and permanent erosion controls (blankets, nets, seed, sod, etc.). Examples of BMPs that commonly impact hydraulic design include storm water basins, diversions, check dams, inlet protection or any product, process or system that changes the storm water flow path or storm water storage capacity of the site or is located in an area of concentrated flow.

The General Contractor must submit a request for information (RFI) to the Owner’s Engineer and obtain written approval before modifying or adding sediment controls that may impact the hydraulic design of the site.

Substitution of any erosion or sediment control BMPs beyond those specified in the SWPPP must first be approved in writing by the Owner’s Engineer. Substitutions are typically only approved if specified materials are not available or there is a valid reason the specified BMP will not work.

Amending the SWPPP does not mean that it has to be reprinted. It is acceptable to add addenda, sketches, new sections, details, and/or revised drawings that are initialed and dated.

I. Discharge of Petroleum Products or Hazardous Substances Discharge of petroleum products or other hazardous substances into streams, storm water or the storm water (storm sewer) system is subject to reporting and clean up requirements. See Section V.B.8. of this SWPPP for state and local information on reporting spills. Refer to the General Permit for additional information. A copy of the spill form is located in Appendix H and the General Permit is located in Appendix M.

J. Notice of Termination Once the site reaches final stabilization with all permanent erosion and sedimentation controls installed, all temporary erosion and sedimentation controls removed, and construction complete the Construction Manager will contact the Owner’s Engineer to complete a site inspection and report.

Upon approval by the Construction Manager, the Owner’s Engineer, and General Contractor, as applicable, must complete and submit an NOT. A copy of the NOT is included in Appendix I.

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 6 NOTE: Stabilization requirements include all areas covered by applicable permits, including out lots and utility easements, unless the new Owner and/or Operator have submitted an NOI(s) to the applicable agency and a copy of the NOI(s) has been put in the SWPPP Binder.

K. General Contractors Responsibility This SWPPP intends to control water-borne and liquid pollutant discharges by some combination of interception, sedimentation, filtration, and containment. The General Contractor and subcontractors implementing this SWPPP must remain alert to the need to periodically refine the update the SWPPP in order to accomplish the intended goals. The General Contractor is ultimately responsible for all site conditions and permit compliance.

L. Log of Construction Activity Section Not Used

M. Agency Storm Water Inspections If a regulatory agency inspector visits the project site, the General Contractor must walk the site with the regulatory inspector and document any deficiencies noted during the inspection. Deficiencies of any type, field or documentation-related, identified during the regulatory inspection, must be noted on the inspection report (located in Appendix K) as a deficiency and resolved within 24 or 48-hours, as appropriate.

The General Contractor must call the Owner or Owner’s Engineer to report the agency inspection immediately, but no later than 1-hour after the inspector has left the jobsite. All storm water or erosion and sediment (E&S) agency visits to the jobsite, whether an official inspection occurred or not, must be reported to the Owner or Owner’s Engineer. Any agency inspector, including OSHA and utility inspectors, that comment on storm water BMPs (inlet protection, track out, etc.) must be reported to the Owner’s Engineer.

A log of all inspections by Federal, State, or local storm water or other environmental agencies shall be kept in the General Contractor SWPPP Binder. The log form can be found in Appendix K and must include the date and time of the visit and whether a report was issued or will be issued as a result of the inspection.

II. INTRODUCTION

This SWPPP has been prepared for major activities associated with the construction of:

City of Lincoln: Rokeby Road; S. 84th Street to S. 94th Street 16-inch Water Main Project

This SWPPP, including the applicable General Permit, includes the elements necessary to comply with the General Permit for construction activities administered by the U.S. Environmental Protection Agency (EPA) under the National Pollutant Discharge Elimination System (NPDES) program and all local governing agency requirements. This SWPPP must be implemented at the start of construction.

Construction phase pollutant sources anticipated at the site are disturbed (bare) soil, vehicle fuels and lubricants, chemicals and coatings associated with site or building construction and pavement installation, construction-generated litter and debris, and building materials. Without adequate control there is a potential for each type of pollutant to be transported by storm water.

Project construction will consist primarily of: Repair of the existing Jamaica North Trail system in Wilderness Park.

A. Purpose A major goal of pollution prevention efforts during project construction is to control soil and pollutants that originate on the site and prevent them from flowing to surface waters. The purpose of this SWPPP is to provide guidelines for achieving that goal. A successful pollution prevention program also relies upon careful inspection and adjustments during the construction process in order to enhance its effectiveness.

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 7 B. Scope The erosion and sediment control measures outlined in this SWPPP must be implemented before construction begins on the site. The measures primarily address the impact of storm rainfall and runoff on areas of the ground surface disturbed during the construction process. In addition, there are recommendations for controlling other sources of pollution that could accompany the major construction activities. Applicability of this SWPPP will terminate when disturbed areas are stabilized, permanent erosion and sedimentation controls are installed, temporary erosion and sedimentation controls are removed, construction activities covered herein have ceased, and a completed Notice of Termination (NOT) is transmitted to the governing agency.

Forms which are necessary for implementing the SWPPP are included herein.

The General Permit for Storm Water Discharges Associated with Construction Activities prohibits most non-storm water discharges during the construction phase. Allowable non-storm water discharges that occur during construction on projects, which are covered by the General Permit, include:

1. Discharges from fire-fighting activities; 2. Fire hydrant flushings; 3. Waters used to wash vehicles where detergents are not used; 4. Water used to control dust in accordance with Subpart 3.4.G; 5. Potable water including uncontaminated water line flushings; 6. Routine external building wash down that does not use detergents; 7. Pavement wash waters where spills or leaks of toxic or hazardous materials have not occurred (unless all spilled material has been removed) and where detergents are not used; 8. Uncontaminated air conditioning or compressor condensate; 9. Uncontaminated ground water or spring water; 10. Foundation or footing drains where flows are not contaminated with process materials such as solvents; 11. Uncontaminated excavation dewatering; 12. Landscape irrigation.

Best Management Practices (BMPs) must be implemented for the above allowable foreseeable discharges for the duration of the permit. Each non-storm water discharge should be noted in the SWPPP and have proper erosion and sedimentation controls in place with the exception of discharges from fire fighting activities.

The techniques described in this SWPPP focus on providing control of pollutant discharges with practical approaches that utilize readily available expertise, material, and equipment.

The Owner referred to in this SWPPP is the City of Lincoln. The General Contractor shall construct the site development improvements while working under contract with the Owner.

III. PROJECT DESCRIPTION

Described below are the major construction activities that are the subject of this SWPPP. Also included in the sequence are BMP installation activities that must take place prior to construction activities. NOTE: Down slope protective measures must always be in place before soil is disturbed. Activities are presented in the order (sequence) they are expected to be completed.

The sequence of construction is as follows:

Note: Upon implementation and installation of the following areas: trailer, parking, lay down, porta-potty, wheel wash, concrete washout, mason's area, fuel and material storage containers, solid waste containers, etc., immediately denote them on the Site Maps and note any changes in location as they occur throughout the construction process. In addition, note any off-site areas where fill is imported from or soil is exported to on the Site Maps.

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 8 Phase I 1. Install stabilized construction exit(s), where needed, and SWPPP Information Sign. 2. Install existing inlet protection, where necessary, on the site (clear only those areas necessary to install inlet protection) 3. Begin installation of temporary stabilization. 4. Begin water main construction.

Phase II 1. Temporarily seed and mulch, throughout construction, denuded areas that will be inactive for 14 days or more. 2. Permanently stabilize areas to be vegetated as they are brought to final grade. 3. Complete trunk sewer improvements and installation of permanent stabilization over all areas. 4. Complete project. 5. Remove all remaining temporary erosion and sediment control devices. 6. Stabilize any areas disturbed by the removal of BMPs. 7. Continue Inspection Reports until the site is fully stabilized and the permit may be terminated.

NOTE: The General Contractor may complete construction-related activities concurrently only if all preceding BMPs have been completely installed. BMP-related steps in the above sequence are italicized for clarity.

The actual schedule for implementing pollutant control measures will be determined by project construction progress. Down slope protective measures must always be in place before soil is disturbed.

IV. SITE DESCRIPTION

Included as parts of this SWPPP are the project Construction Drawings – City of Lincoln: Rokeby Road; S. 84th Street to S. 94th Street 16-inch Water Main Project – Lincoln, Nebraska

A. Site Location  Address: Rokeby Road between S. 84th and S. 94th Streets in Lincoln, Lancaster County, Nebraska  Project construction site covers approximately 5 acres of which 3.5 acres are disturbed.  Adjacent surrounding properties: Farmlands and native grass areas  A vicinity map is included in Appendix C

B. Site Topography  Lowest elevation on project site: 1380  Highest elevation on project site: 1440  Topography changes: Final Topography will be similar to existing after completion of trunk sewer improvements are completed.  Vegetation: grass

C. Rainfall Information

Jan Feb March April May June July Aug Sept Oct Nov Dec Total Average rainfall 0.63 0.79 1.93 2.72 4.29 4.33 3.39 3.50 3.03 1.97 1.42 0.94 28.94 in inches

 The total average annual rainfall for the project area is: 28.94  The design rain event for this project is: N/A

D. Site Soils  Soil type and texture: Soils consist primarily of silt loams with an erosion “k” factor of 0.31 indicating soils moderately susceptible to sheet and rill erosion.  Average depth of topsoil: Topsoil depths range from 6 to 12 inches.

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 9  Average depth to groundwater: Not applicable.

This information is an estimate and shall not be used for construction costs or estimating.

E. Total Site Area, Area to be Disturbed, and Runoff Coefficient  The project site contains: Approximately 5 acres  The area to be disturbed on the project site is: Approximately 3.5 acres  Off-site areas to be disturbed as part of this project: There are no anticipated off-site areas to be disturbed for this project.

 Pre-Construction Runoff Coefficient - “c” =0.25

 Post-Construction Runoff Coefficient – “c” =0.25

F. Receiving Surface Waters  Receiving waters: Wagon Trail Creek  Receiving water quality: n/a  Off-site run-on: n/a  100-year Floodplain: The project is not located within the 100-year floodway and floodplain. No floodplain development permit is needed

G. Erosion and Sedimentation Control Plan  See the plans that are part of the City of Lincoln: Rokeby Road; S. 84th Street to S. 94th Street 16-inch Water Main Project

H. Environmental Permits–Other than NPDES, Storm Water and/or Erosion & Sediment Control  No other permits are expected

I. Threatened and Endangered Species  No expected impacts to threatened and endangered species or critical habitats near the project site. Documentation is included in Appendix O.

J. Historic Properties  No expected impacts to historical or archaeological properties.

V. STORM WATER POLLUTION PREVENTION MEASURES AND CONTROLS

A variety of storm water pollutant controls best management practices (BMP’s) are recommended for this project. Some controls are intended to function temporarily and will be used as needed for pollutant control during the construction period. These include temporary sediment barriers and permanent storm retention ponds (which can also function as temporary sediment basins). Permanent stabilization will be accomplished in all disturbed areas by covering the soil with pavement, building foundation, vegetation, or other forms of soil stabilization. NOTE: Not all of the BMP’s listed below are intended for this project but they are provided in case the General Contractor needs to implement them.

A. Erosion and Sediment Controls

1. Minimization of Disturbed Areas

Note to General Contractor: Owner has authority to limit surface area of erodible earth material exposed by clearing and grubbing, excavation, borrow and embankment operations and to direct General Contractor to provide immediate permanent or temporary pollution control measures.

2. Soil Stabilization The purpose of soil stabilization is to prevent soil from eroding and leaving the site. In the natural condition, soil is stabilized by native vegetation. The primary technique to be

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 10 used at this project for stabilizing site soils will be to provide a protective cover of grass, pavement, or building structure.

a.) Temporary Seeding and Mulching – Temporary seeding is the establishment of a temporary vegetative cover on disturbed areas by seeding with appropriate rapidly growing annual plants. Its purpose is to reduce erosion and sedimentation by stabilizing disturbed areas that will not be brought to final grade for a period of 14 days or more, reduce damage from sediment and runoff to downstream or off- site areas, and to provide protection to bare soils exposed during construction until permanent vegetation or other erosion control measures can be established. Initial stabilization activities must be completed with 21 days.

Temporary seeding and mulching should be used on exposed soil surfaces. Such areas include denuded areas, soil stockpiles, dikes, dams, sides of sediment basins, temporary road banks, etc. permanent vegetative cover shall be applied to areas as soon as possible.

Note to General Contractor: Temporary stabilization is not achieved simply through seeding. In order for an area or stockpile to be sufficiently stabilized via temporary vegetation, seed must germinate, grow and provide adequate vegetative density. Silt fence may be used around the perimeter of a stock pile instead of temporary seeding / mulch, if the stockpile is to be used during the duration of construction.

Temporary seeding must also include straw mulch or hydro mulch

b.) Permanent Seeding – Permanent vegetation is the establishment of perennial vegetative cover on disturbed areas by planting seed. Its purpose is to reduce erosion and sediment yield from disturbed areas, to permanently stabilize disturbed areas in a manner that is economical, adaptable to site conditions, and allows selection of the most appropriate plant materials, to improve wildlife habitat and to enhance natural beauty. It may be used on disturbed areas where permanent, long-lived vegetative cover is needed to stabilize the soil and rough- graded areas which will not be brought to final grade for a year or more.

Permanent seeding must also include a cover crop and either straw mulch, hydro mulch or erosion control blanket.

c.) Hydroseeding/Hydromulching – Hydro- mulching/Hydro- seeding is a grass planting process. The process begins by mixing mulch, seed, tackifier, fertilizer, and water into a tank of a hydro-mulching machine. The material is often called a slurry. Once applied to the soil, the material enhances initial growth.

d.) Slope Tracking – Slope tracking is the technique used for surface roughening or scarification by means of mechanical equipment. Slope Tracking creates grooves that are perpendicular to the slope. The primary functions for slope tracking are to reduce erosion potential by decreasing runoff velocities, trap sediment, increase the chances for water infiltration, and aid in the establishment of vegetative cover.

e.) Mulching – Mulching is the application of plant residues or other suitable materials to the soil surface. Its purpose is to prevent erosion by protecting the soil surface from raindrop impact and reducing the velocity of overland flow. Mulch helps foster the growth of vegetation by increasing available moisture and providing insulation against extreme heat and cold. Mulching can be used at anytime where protection of the soil surface is desired. Mulch can be used in conjunction with seedings to establish vegetation, or by itself to provide temporary protection of the soil surface.

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 11 f.) Rolled Erosion Control Products – Rolled erosion control products are protective covering netting, blankets or turf reinforcement mats (TRMs) installed on a prepared planting area of a steep slope, channel, or shoreline. They aid in controlling erosion on critical areas by absorbing the energy from raindrop impacts and providing a microclimate which protects young vegetation and promotes its establishment. TRMs are also used to raise the maximum permissible velocity and shear stress of turf grass stands in channelized areas by enabling the turf to resist the forces of erosion during storm events.

3. Structural Controls

a.) Silt Fence – Silt fence is a temporary sediment barrier consisting of a synthetic fabric stretched across and attached to supporting posts and entrenched or sliced in place. Silt fences can be used in the following applications:  for intercepting and detaining small amounts of sediment from disturbed areas during construction operations in order to prevent sediment from leaving the construction site,  for decreasing the velocity of sheet flows  in high-risk areas, such as those adjacent to streams, wetlands, reservoirs, lawns, etc.,  in short lengths at the toe of fill where ground slopes toward the fill,  behind curb and gutter to prevent silting of the pavement.

Prior to start of construction, silt fence placement should be designed by a qualified professional. Plans and specifications should be referred to by field personnel throughout the construction process.

Use limitations include:  If the size of the drainage areas is more than 1/4-acre per 100 feet of silt fence length, a different sediment and erosion control strategy should be investigated. The maximum gradient behind the barrier should be no more than 50% (2H:1V).  Under no circumstances should silt fences be constructed in live streams or in swales or ditch lines where flows are likely to exceed 1 cubic foot per second.  On steep slopes, care should be given to placing alignment of fence perpendicular to the general direction of the flow.

b.) Construction Entrance – A construction entrance is a stabilized stone pad with a filter fabric underliner located at any point where vehicular traffic will be entering or leaving a construction site to or from a public right-of-way, street, alley, and sidewalk or parking area. Its purpose is to reduce or eliminate the tracking of sediment onto public rights-of-way or streets. It should be used wherever traffic will be leaving a construction site and move directly onto a public road or other paved area. Construction entrance location to be determined by contractor or owner.

c.) Check Dams - Check dams are small temporary dams constructed across a swale or drainage ditch for the purpose of reducing the velocity of concentrated storm water flows, thereby reducing erosion of the swale or ditch. Check dams also trap small amounts of sediment generated in the ditch itself; however, these are not sediment trapping practices and should not be used as such. Some specific applications include the following:  Temporary ditches or swales which, because of their short length of service, cannot receive a non-erodible lining but still need some protection to reduce erosion.  Permanent ditches or swales which for some reason cannot receive a permanent non-erodible lining for an extended period of time.

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 12  Temporary or permanent ditches or swales which need protection during the establishment of grass linings

Use limitations include:  Use limited to small open channels which drain 10 acres or less.  Should not be used in an active stream.  Should not to be used where high flows or high velocities are expected.  In locating the check dam, consideration should be given to the effects and the reach of the impounded water and sediment.  Storm flows across a deteriorated check dam can result in the loss of the structure and the washout of the accumulated sediment.

d.) Diversions – A diversion is a channel constructed across a slope with a supporting ridge on the lower side for the purpose of reducing the slope length and intercepting and diverting storm water runoff to stabilized outlets at non- erosive velocities. Diversions are used where: a. runoff from higher areas may damage property, cause erosion, or interfere with the establishment of vegetation on lower areas; b. surface and/or shallow subsurface flow is damaging upland slopes; or c. slope length needs reduction to minimize soil loss.

e.) Wattle Barrier – Wattle Barriers are elongated tubes of compacted straw and or other fibers that are installed along contours or at the base of slopes to help reduce soil erosion and retain sediment. They function by shortening slope lengths; reducing runoff water velocity thus trapping dislodged soil particles. They can work as check dams to prevent sheet, rill, and gully erosion.

Final site stabilization is achieved when perennial vegetative cover provides permanent stabilization with a density greater than 70 percent over the entire area to be stabilized by vegetative cover. This is exclusive of areas paved, rocked, or have a building on them.

B. Other Pollutant Controls This section includes the controls of pollutants other than sediment and additional requirements of the General Permit.

1. Dust Control Construction traffic must enter and exit the site at the stabilized construction exit. The purpose is to trap dust and mud that would otherwise be carried off-site by construction traffic. Large areas of soil that are denuded of vegetation and have no protection from particles being picked up and carried by wind should be protected with a temporary cover or kept under control with water or other soil adhering products to limit wind transported particles exiting the site perimeter.

Water trucks or other dust control agents will be used as needed during construction to reduce dust generated on the site. Dust control must be provided by the General Contractor to a degree that is in compliance with applicable local and state dust control regulations.

2. Dewatering Verify discharges from dewatering activities are allowed non-storm water discharges under the General Permit. Obtain a dewatering permit according to the regulations, if discharges from dewatering activities are not allowed under the General Permit. Discharges from dewatering operations must be directed through an appropriate pollution prevention/treatment measure, such as a pump discharge filter bag, sediment trap or sediment basin prior to being discharged from the site.

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 13 Under no circumstances are discharges from dewatering operations to be discharged directly into streams, rivers, lakes or other areas off-site. Likewise, discharges into storm sewer systems that do not drain to a suitable on-site treatment facility, such as a basin, are also prohibited. Discharges from dewatering operations must also be conducted in a manner sufficient to prevent erosion from the discharge runoff.

3. Solid Waste Disposal No solid materials, including building materials, are allowed to be discharged from the site with storm water. All solid waste, including disposable materials incidental to the major construction activities, must be collected and placed in containers. The containers will be emptied as necessary by a contract trash disposal service and hauled away from the site. Covers for the containers will be provided as necessary to meet state and local requirements. The location of solid waste receptacles shall be shown on the Site Maps.

Substances that have the potential for polluting surface and/or groundwater must be controlled by whatever means necessary in order to ensure that they do not discharge from the site. As an example, special care must be exercised during equipment fueling and servicing operations. If a spill occurs, it must be contained and disposed of so that it will not flow from the site or enter groundwater, even if this requires removal, treatment, and disposal of soil. In this regard, potentially polluting substances should be handled in a manner consistent with the impact they represent.

4. Sanitary Facilities All personnel involved with construction activities must comply with state and local sanitary or septic system regulations. Temporary sanitary facilities will be provided at the site throughout the construction phase. They must be utilized by all construction personnel and will be serviced by a commercial operator. The location of sanitary facilities shall be shown on the Site Maps. Portable toilets must be securely anchored and are not allowed within 30’ of inlets or permitted limit of disturbance or within 50’ of a water of the State.

5. Non-Storm Water Discharges Non-storm water components of site discharges must be clean water. Water used for construction which discharges from the site must originate from a public water supply or private well approved by the State Health Department. Water used for construction that does not originate from an approved public supply must not discharge from the site. It can be retained in the ponds until it infiltrates and evaporates. Other non-storm water discharges would include ground water. Only uncontaminated ground water can be discharged from the site, as allowed by and in accordance with applicable local ground water dewatering permits/regulations. When non-storm water is discharged from the site, it must be done in a manner such that it does not cause erosion of the soil during discharge.

Process water such as power washing and concrete cutting must be collected for treatment and disposal. It is not to be flushed into the site storm drain system.

6. Concrete Waste from Concrete Ready-Mix Trucks Discharge of excess or waste concrete and/or wash water from concrete trucks will be allowed on the construction site, but only in specifically designated lined and diked areas prepared to prevent contact between the concrete and/or wash water and storm water that will be discharged from the site. Alternatively, waste concrete can be placed into forms to make rip rap or other useful concrete products. The cured residue from the concrete washout diked areas shall be disposed in accordance with applicable state and federal regulations. The project construction manager is responsible for assuring that these procedures are followed. The location of concrete washout areas shall be shown on the Site Maps. Follow all applicable environmental regulations for concrete wash out pits.

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 14 7. Mason’s Area Contractor shall identify mason’s area on the site and indicate location on the Site Map. To the extent practical, all masonry tools, material, including sand and sacked cement or mortar materials, and equipment shall be located within the area identified. Runoff control, such as berms or diversion ditches, silt fence, straw wattles, or other means of containment shall be provided to prevent the migration of storm water pollutants in runoff from the mason’s area. Receptacles for debris and trash disposal shall also be provided.

8. Fuel Tanks Temporary on-site fuel tanks for construction vehicles shall meet all state and federal regulations. Tanks shall have approved spill containment with the capacity required by the applicable regulations. From NFPA 30: All tanks shall be provided with secondary containment (i.e. containment external to and separate from primary containment). Secondary containment shall be constructed of materials of sufficient thickness, density, and composition so as not to be structurally weakened as a result of contact with the fuel stored and capable of containing discharged fuel for a period of time equal to or longer than the maximum anticipated time sufficient to allow recovery of discharged fuel. It shall be capable of containing 110% of the volume of the primary tank if a single tank is used, or in the case of multiple tanks, 150% of the largest tank or 10% of the aggregate, whichever is larger.

The tanks shall be in sound condition free of rust or other damage which might compromise containment. Fuel storage areas will meet all EPA, OSHA and other regulatory requirements for signage, fire extinguisher, etc. Hoses, valves, fittings, caps, filler nozzles, and associated hardware shall be maintained in proper working condition at all times. The location of fuel tanks shall be shown on the Site Maps and shall be located to minimize exposure to weather and surface water drainage features.

A Spill Prevention, Control and Countermeasure (SPCC) Plan must be developed if aboveground oil storage capacity at the construction site exceeds 1,320-gallons or as specified by state. Containers with a storage capacity of 55-gallons or less are not included when calculating site storage capacity. The General Contractor shall work with the Owner’s Engineer to develop and implement a SPCC Plan in accordance with the Oil Pollution Prevention regulation at Title 40 of the Code of Federal Regulations, Part 112, (40 CFR 112).

9. Hazardous Material Management and Spill Reporting Plan Any hazardous or potentially hazardous material that is brought onto the construction site will be handled properly in order to reduce the potential for storm water pollution. All materials used on this construction site will be properly stored, handled, dispensed and disposed of following all applicable label directions. Flammable and combustible liquids will be stored and handled according to 29 CFR 1926.152. Only approved containers and portable tanks shall be used for storage and handling of flammable and combustible liquids.

Material Safety Data Sheets (MSDS) information will be kept on site for any and all applicable materials.

In the event of an accidental spill, immediate action will be undertaken by the General Contractor to contain and remove the spilled material. All hazardous materials will be disposed of by the Contractor in the manner specified by federal, state and local regulations and by the manufacturer of such products. As soon as possible, the spill will be reported to the appropriate agencies. As required under the provisions of the Clean Water Act, any spill or discharge entering waters of the United States will be properly reported. The General Contractor will prepare a written record of any spill of petroleum products or hazardous materials in excess of 1 gallon or reportable quantities, which ever is less. The General Contractor will provide notice to Owner, immediately upon identification of a reportable spill. A spill report form is located in Appendix H.

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 15 Any spills of petroleum products or hazardous materials in excess of Reportable Quantities as defined by EPA or the state or local agency regulations, shall be immediately reported to the EPA National Response Center (1-800-424-8802) and NDEQ (1-877-253-2603)

The State reportable quantity for petroleum products is 25 gallons or more, per NDEQ Title 26, Ch. 18, 002.01B

The reportable quantity for hazardous materials is equal to or greater than 100 pounds

In order to minimize the potential for a spill of petroleum product or hazardous materials to come in contact with storm water, the following steps will be implemented:

a) All materials with hazardous properties (such as pesticides, petroleum products, fertilizers, detergents, construction chemicals, acids, paints, paint solvents, additives for soil stabilization, concrete, curing compounds and additives, etc.) will be stored in a secure location, under cover, when not in use.

b) The minimum practical quantity of all such materials will be kept on the job site and scheduled for delivery as close to time of use as practical.

c) A spill control and containment kit (containing for example, absorbent material such as kitty litter or sawdust, acid neutralizing agent, brooms, dust pans, mops, rags, gloves, goggles, plastic and metal trash containers, etc.) will be provided on the construction site and location(s) shown on Site Maps.

d) All of the product in a container will be used before the container is disposed of. All such containers will be triple rinsed, with water prior to disposal. The rinse water used in these containers will be disposed of in a manner in compliance with state and federal regulations and will not be allowed to mix with storm water discharges.

e) All products will be stored in and used from the original container with the original product label.

f) All products will be used in strict compliance with instructions on the product label.

g) The disposal of excess or used products will be in strict compliance with instructions on the products label.

10. Long-Term Pollutant Controls Storm water pollutant control measures installed during construction that will also provide storm water management benefits after construction, include vegetation.

All controls and systems must be installed & functioning as designed and free of accumulated sediment and debris during final project inspection and approval.

C. “Best Management Practices” (BMPs)

Owner has authority to limit surface area of erodible earth material exposed by clearing and grubbing, excavation, borrow and embankment operations and to direct the General Contractor to install immediate permanent or temporary pollution control measures.

During the construction phase, the General Contractor shall implement the following measures:

1) Materials resulting from the clearing and grubbing or excavation operations shall be stockpiled up-slope from adequate sedimentation controls. Ensure that materials removed to an off-site location shall be protected with appropriate controls and properly

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 16 permitted and otherwise comply with applicable laws, all in accordance with this SWPPP, including Section V.D. below. 2) The General Contractor shall designate areas on the Site Maps for equipment cleaning, maintenance, and repair. The General Contractor and subcontractors shall utilize such designated areas. Cleaning, maintenance, and repair areas shall be protected by a temporary perimeter berm, shall not occur within 150 feet of any waterway, water body or wetland, and in areas located as far as practical from storm sewer inlets.

3) Use of detergents for large-scale washing is prohibited (i.e. vehicles, buildings, pavement surfaces, etc.).

4) Chemicals, such as paints, solvents, fertilizers, and other toxic materials, must be stored in waterproof containers. Except during application, the containers and the contents must be kept in trucks or within storage facilities. Runoff containing such material must be collected, removed from the site, treated, and disposed of at an approved solid waste and chemical disposal facility.

D. Material Storage, Borrow, or Disposal Areas Outside of Permitted Limits of Disturbance

This section describes roles and responsibilities of the General Contractor in verifying and documenting that activities associated with site construction at material storage, borrow, or disposal areas outside of the Permitted Limits of Disturbance have obtained proper coverage under the NPDES program.

Definitions Applicable to this Section

Site - The location(s) described in this SWPPP and on the associated Site Maps at which the General Contractor has operational control.

Operational Control - Control over construction plans and specifications, including the ability to make modifications to those plans and specifications, or day-to-day operational control of those activities at the Site which are necessary to ensure compliance with the SWPPP.

Off-site – Any area outside the Limits of Disturbance as shown on the Site Maps in the SWPPP. This is not necessarily the same as the property ownership boundary.

Permitted Limits of Disturbance - Any area of the Site for which the operator(s) are authorized to disturb the ground surface or conduct construction-related activities (i.e. areas shown inside the Limits of Disturbance on the Site Maps in the SWPPP).

Material – Rock, soil, or other construction materials obtained as part of an earth disturbing activity.

Responsibilities of the General Contractor

When any material storage, borrow, or disposal will take place during construction outside of Permitted Limits of Disturbance the General Contractor must:

1. Verify that any proposed material storage, borrow, or disposal areas have obtained proper coverage under the NPDES program. This shall include obtaining copies of signed and submitted NPDES Notices of Intent or applications, Storm Water Discharge Authorizations, or other documentation necessary to verify compliance with the NPDES program (e.g., documentation from local qualified programs, MS4s, Soil Conservation District permits, etc.)

2. All documentation obtained as described in this section shall be retained in the SWPPP binder at the site and in accordance with the Retention of Records.

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 17 VI. LOCAL PLANS In addition to this SWPPP, construction activities associated with this project must comply with any guidelines set forth by local regulatory agencies. The General Contractor shall maintain documents evidencing such compliance in this SWPPP.

VII. INSPECTIONS AND SYSTEM MAINTENANCE Between the times this SWPPP is implemented and final Notice of Termination has been submitted, all disturbed areas and pollutant controls must be inspected bi-weekly. The purpose of site inspections is to assess performance of pollutant controls. The inspections will be conducted by the General Contractor’s project construction manager. Based on these inspections, the General Contractor will decide whether it is necessary to modify this SWPPP, add or relocate controls, or revise or implement additional Best management Practices in order to prevent pollutants from leaving the site via storm water runoff. The General Contractor has the duty to cause pollutant control measures to be repaired, modified, supplemented, or take additional steps as necessary in order to achieve effective pollutant control. Note: If a BMP is covered by snow, mark the BMP as not applicable and document the reason the BMP can not be inspected on the bi-weekly report.

Examples of specific items to evaluate during site inspections are listed below. This list is not intended to be comprehensive. During each inspection, the inspector must evaluate overall pollutant control system performance as well as particular details of individual system components. Additional factors should be considered as appropriate to the circumstances. Note: A grid system has been incorporated into Site Maps and shall be used as a location guide for bi-weekly reporting on structural controls and BMPs.

A. Construction Exit and Track Out Locations where vehicles enter and exit the site must be inspected for evidence of off-site sediment tracking. A stabilized construction exit shall be constructed where vehicles enter and exit. Exits shall be maintained or supplemented with additional rock as necessary to prevent the release of sediment from vehicles leaving the site. Any sediment deposited on the roadway shall be swept as necessary throughout the day or at the end of every day and disposed of in an appropriate manner. Sediment shall NOT be washed into storm sewer systems.

Note to Contractor: Track out is a sediment release (sediment from the construction site was allowed beyond the permitted limits of disturbance). All sediment releases must be reported to the Owner’s Engineer. See Item H below for additional information.

B. Erosion Control Devices Rolled erosion control products (nets, blankets, turf reinforcement mats, and inlet culvert protections) and marginally vegetated areas (areas not meeting required vegetative densities for final stabilization) must be inspected bi-weekly. Rilling, rutting and other signs of erosion indicate the erosion control device is not functioning properly and additional erosion control devices are warranted.

C. Sediment Control Devices Sediment barriers, traps and basins must be inspected and they must be cleaned out at such time as their original capacity has been reduced by 50 percent. All material excavated from behind sediment barriers or in traps and basins shall be incorporated into on-site soils or spread out on an upland portion of the site and stabilized. To minimize the potential for sediment releases from the project site, perimeter control devices shall be inspected with consideration given to changing up-gradient conditions.

D. Material Storage Areas Inspections shall evaluate disturbed areas and areas used for storing materials that are exposed to rainfall for evidence of, or the potential for, pollutants entering the drainage system or discharging from the site. If necessary, the materials must be covered or original covers must be repaired or supplemented. Also, protective berms must be constructed, if needed, in order to contain runoff from material storage areas. All state and local regulations pertaining to material storage areas will be adhered to.

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 18 E. Vegetation Consideration must be given to anticipated climate and seasonal conditions when specifying and planting seed. Seed shall be free of weedy species and appropriate for site soils and regional climate. Seed and mulch immediately after topsoil is applied and final grade is reached. Seeding mix shall include both cover crop and permanent seed mix. Grassed areas shall be inspected to confirm that a healthy stand of grass is maintained. The site has achieved final stabilization once all areas are covered with building foundation or pavement, or have a stand of grass with a minimum of 70 percent density or greater of natural background cover over the entire vegetated area in accordance with the General Permit requirements. Vegetated areas must be watered, fertilized, and reseeded as needed to achieve this requirement. The vegetative density must be maintained through project completion to be considered stabilized. Areas protected by erosion control blankets are not permanently stabilized until the applicable General Permit requirement for final vegetative density is achieved.

Rip-rap, mulch, gravel, decomposed granite or other equivalent permanent stabilization measures may be employed in lieu of vegetation based on site-specific conditions and governing authority approval.

F. Discharge Points All discharge points must be inspected to determine whether erosion and sediment control measures are effective in preventing discharge of sediment from the site or impacts to receiving waters.

G. Off-Site or Special Project Areas There are no special projects, beyond the permitted limits of disturbance, requiring inspection and maintenance associated with this construction project.

H. Sediment Releases The bi-weekly inspection report must identify each and every time sediment is allowed beyond permitted limits of disturbance. This includes sediment that escapes or is allowed to leave via designed discharge points. Storm water that leaves the permitted limits of disturbance and is discolored contains soil particles (sediment) and must be treated as a sediment release.

The bi-weekly Inspection Report Form (Appendix G) must identify all deficiencies, any corrections, whether they are identified during the current inspection or have occurred since the previous inspection, and any additional comments. Based on inspection results, any modification necessary to increase effectiveness of this SWPPP to an acceptable level must be made immediately but no longer than within 48 hours of the inspection. The inspection reports must be complete and additional information should be included if needed to fully describe a situation. An important aspect of the inspection report is the description of additional measures that need to be taken to enhance plan effectiveness. The inspection report must identify whether the site was in compliance with the SWPPP at the time of inspection and specifically identify all incidents of non- compliance.

Inspection reports must include an original, authorized signature and date of the inspection. Inspection reports must be retained by the General Contractor as an integral part of this SWPPP for at least three years from the date of submission of the Notice of Termination of permit coverage.

Ultimately, it is the responsibility of the General Contractor to assure the adequacy of site pollutant discharge controls. Actual physical site conditions or contractor practices could make it necessary to install more structural controls than are shown on the plans. For example, localized concentrations of runoff could make it necessary to install additional sediment barriers. Assessing the need for additional controls and implementing them or adjusting existing controls will be a continuing aspect of this SWPPP until the site achieves final stabilization. Any modifications, additions or deletions of sediment control devices that may alter the hydraulic design of the site or are located in areas of potential high flow (basins, traps, check dams, diversions. etc.) must be approved by the Owner’s Engineer through the request for information process (RFI).

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 19

APPENDICES TABLE OF CONTENTS

APPENDIX A CONTACT LIST

APPENDIX B GENERAL CONTRACTOR SWPPP CERTIFICATIONS

APPENDIX C VICINITY MAP

APPENDIX D CONSTRUCTION STORM WATER NOTICE OF INTENT (CWS-NOI)

APPENDIX E CONSTRUCTION SITE NOTICE; SWPPP INFORMATION SIGN EXHIBIT

APPENDIX F CONTRACTOR/SUBCONTRACTOR CERTIFICATION; CERTIFICATION OF QUALIFICATIONS FOR COMPLIANCE OFFICER

APPENDIX G STORMWATER CONSTRUCTION SITE INSPECTION REPORT

APPENDIX H SPILL REPORT FORM

APPENDIX I NOTICE OF TERMINATION (NOT)

APPENDIX J RECORD OF STABILIZATION AND CONSTRUCTION ACTIVITY DATES

APPENDIX K FEDERAL, STATE, OR LOCAL STORM WATER OR OTHER ENVIRONMENTAL INSPECTOR SITE VISIT LOG

APPENDIX L MATERIAL CERTIFICATION STATEMENT

APPENDIX M GENERAL PERMIT

APPENDIX N ADDITIONAL FORMS

APPENDIX O SITE-SPECIFIC PERMITS, DESIGN CALCULATIONS AND RELATED INFORMATION including NON-NPDES STORM WATER PERMITS, 404 PERMITS, ENDANGERED SPECIES INFORMATION, ENVIRONMENTAL SITE ASSESSMENTS, etc.

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 20

APPENDIX A

CONTACT LIST

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 21 Contact List

Contacts for: City of Lincoln: Rokeby Road; S. 84th Street to S. 94th Street 16-inch Water Main Project Lincoln, NE

Owner’s SWPPP Engineer: Travis Figard, P.E. Phone: 402.474.6311 Responsible for the development of the SWPPP for this site.

General Contractor’s Construction Manager: Name:

Company:

Phone (office):

Phone (mobile):

Responsible for obtaining the NPDES permit and conducting the bi-weekly inspections, the supervision or completion of construction at a site, able to adequately identify and implement storm water sediment and erosion control practices and effectively instruct employees and contractors in the implementation of such practices to comply with a Permit, the Clean Water Act, and the site’s SWPPP.

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 22 APPENDIX B

GENERAL CONTRACTOR SWPPP CERTIFICATIONS

NOTES to General Contractor:

The General Contractor must certify this SWPPP by signing the GC SWPPP certification letter located in this Appendix.

Signed SWPPP certifications can not be modified or revised in the field.

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 23

General Contractor’s SWPPP Certification

Date:

RE: City of Lincoln: Rokeby Road; S. 84th Street to S. 94th Street 16-inch Water Main Project Lincoln, NE

CERTIFICATION OF THE STORM WATER POLLUTION PREVENTION PLAN

GENERAL PERMIT FOR STORM WATER DISCHARGES FROM CONSTRUCTION ACTIVITIES

I certify under penalty of law that all revisions, modifications, deletions, or additions to this document and all attachments created during construction were prepared under my direction or supervision in accordance with a system designed to assure qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage this system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations.

Sincerely,

Signature

Printed Name

Title

Company

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 24

APPENDIX C

VICINITY MAP

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 25 CITY OF LINCOLN

PROJECT NO: C15-3105 601 P Street, Suite 200 EXHIBIT AERIAL LOCATE P.O. Box 84608 DRAWN BY: TAF ROKEBY ROAD: 84TH ST. TO 94TH ST. Lincoln, NE 68508 R 16-INCH WATER MAIN PROJECT TEL 402.474.6311 DATE: 05/08/17 FAX 402.474.5160 1

APPENDIX D

CONSTRUCTION STORM WATER NOTICE OF INTENT (CWS-NOI)

NOTES to General Contractor:

If instructed above, the General Contractor must complete, sign and submit a Notice of Intent or similar storm water permit application, to the applicable governing agency within 7 days of Project Award.

Signed NOIs must be posted on the SWPPP Sign near the job-site entrance within view of the public.

Signed NOIs can not be modified or revised in the field.

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 26 Attachment #1

Construction Storm Water Notice of Intent (CSW-NOI)

Readiness to Apply (Circle “yes” or “no” as it applies to this project)

Does a reasonable potential exist for permit authorization to be limited? [Part I.C.3] YES NO If the answer to this question is Yes, contact NDEQ at 402-471-4220 before proceeding with this CSW-NOI.

Storm water Pollution Prevention Plan (SWPPP) Part III

a. Has a Storm Water Pollution Prevention Plan been developed for this project? YES NO b. Has a qualified individual [Part III A] prepared the SWPPP? YES NO

Has the following been incorporated into the SWPPP? c. Site and activity descriptions as per Part III.B; YES NO d. Sediment and pollution control measures and record keeping as per Part III.C; YES NO e. Erosion prevention measures and record keeping as per Part III.C; YES NO f. Inspections, maintenance of BMPs and associated record keeping as per Part III.E, I-J; YES NO

g. Final stabilization addressed as per Part III.M; YES NO h. Does the SWPPP include documentation supporting a determination of permit YES NO eligibility with regards to endangered and threatened species and critical habitat? (Guidance is available on the NDEQ website: www.deq.state.ne.us)

If any questions in Storm Water Pollution Prevention Plan (SWPPP),“a – h” above, have been answered No, complete those requirements before proceeding with this CSW-NOI. A. Construction Site Description a. Project Name:______b. Physical Address and County (Indicate general location description if no address is available): ______

______

______

c. Project Type: Residential ___ Commercial/Industrial ___ Linear ___ Other ______d. Project Size: Total Area (acres): ______Area to be disturbed (acres): ______e. Identify surface waters within ½ mile of project boundary that will received storm water or discharge from permanent storm water management system. ______

f. Name of Receiving Waters (Add attachments if more than two (2) bodies of water and/or Outfalls):______. Waterbody Type ______(ditch, pond, stream, river etc.). Page 1 of 3 Attachment #1

g. Legal Description (1): ______Quarter of the ______Quarter, ______Section ______, Township______N, Range______(E or W) (1) Applicants may enter a legal description in terms other than those requested. For example: N1/2, Section 8, Township 8 N, Range 6 W.

h. Include a general location map with enough detail to identify the location of the construction site and waters of the state within one mile of the site. Has the map been included? YES NO (e.g., USGS 7.5 minute quad map, a portion of a city or county map, or equivalent map)

i. SWPPP Designer, company, address and phone number: ______First and Last Name Company Name ______Mailing Address City, State, Zip Code ______Phone Number Email

j. SWPPP Location: ______k. Project start date (approximate): ______l. Project end date (estimated): ______m. List any state or federally-listed threatened or endangered species, or state or federally-designated critical habitat that is in your project area to be covered by this permit. ______n. For sites previously authorized under a Construction Storm Water (CSW) permit and undergoing a transfer of owner and / or certifying official. List the previous NPDES CSW Permit Number: NER 1______.

C. Certification The appropriate individuals must sign information submitted on this CSW-NOI form as required in NPDES General Permit NER110000 Part VI.D.6, and below or the application will not be authorized. If more than one certifying official, submit multiple copies of the following information.

All permit applications shall be signed as per Title 119, Chapter 13 Applications; Signatories as follows: 002.01 For a corporation. By a Responsible Corporate Officer, which means: • A president, secretary, treasurer, or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy or decision making functions for the corporation, or • The manager of one or more manufacturing, production, or operating facilities, provided the manager is authorized to make management decisions which govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long term environmental compliance with environmental laws and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for permit application requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures. 002.02 For a partnership or sole proprietorship: By a general partner or proprietor, respectively.

Page 2 of 3 Attachment #1 002.03 For a municipality, State, Federal, or other public agency. • By either a principal executive officer of the agency, or • A senior executive officer having responsibility for the operations of a principal geographic unit of the agency.

Certifying Official: "I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate and complete. I am aware that there are significant penalties for submitting false information including the possibility of fine and imprisonment for knowing violations."

Certifying Official / Date: ______/ ______

Certifying Official, company name, address, and phone number:

______First and Last Name Company Name/Applicant ______Phone Number Title ______Mailing Address City, State, Zip Code

Certifying Official #2 (optional)/ Date:______/ ______

Certifying Official #2, company name, address, and phone number:

______First and Last Name Company Name/Applicant ______Phone Number Title ______Mailing Address City, State, Zip Code

Authorized Representative, company name, address, and phone number:

______First and Last Name Company Name ______Phone Number Title ______Mailing Address City, State, Zip Code

Submit this form to: Water Quality Division Storm Water Suite 400, The Atrium 1200 ‘N’ Street PO Box 98922 Lincoln NE 68509-8922 Page 3 of 3

APPENDIX E

CONSTRUCTION SITE NOTICE SWPPP INFORMATION SIGN EXHIBIT

NOTES to General Contractor:

The Construction Site Notice must be posted on the SWPPP Information Sign located near the construction exit along with the NOI, GC permit authorization(s) and a reference to where the SWPPP is located on the jobsite.

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 27

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 28 CONSTRUCTION SITE NOTICE (To be located on the SWPPP Information Sign)

FOR THE NPDES GENERAL PERMIT

Contractor Firm:

Contractor

Address:

Contact Name & ______Number: Name Phone Number

Project

Description:

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 29

APPENDIX F

CONTRACTOR/SUBCONTRACTOR CERTIFICATION

&

CERTIFICATION OF QUALIFICATIONS FOR COMPLIANCE OFFICER

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 30 Contractor/Subcontractor Certification

City of Lincoln: Rokeby Road; S. 84th Street to S. 94th Street 16-inch Water Main Project Lincoln, NE

The General Contractor and all contractors and/or subcontractors and their employees that will implement and maintain the pollution control measures in the SWPPP and/or are involved in ground-disturbing activities on the site must be identified below. Each must sign a statement certifying that they understand the General Permit authorizing storm water discharges during construction. These certifications must be maintained in the SWPPP file.

Contractor Name Trade

Company Name Business Phone Number

Business Address City, State Zip

CERTIFICATION:

“I certify that I understand the term and conditions of the National Pollutant Discharge Elimination System (NPDES) General Permit that authorizes the storm water discharges associated with industrial activity from the construction site identified as part of this certification. The SWPPP and General Permit have been made available to me to review and I agree to stay in compliance with the permit.”

Signature Date

Initial here if you received a copy Printed Name of storm water compliance Guidance material appropriate for the conditions at the site.

Title (Must be an Officer of company if form is a permit requirement. See Note below.)

 All employees of contractors and subcontractors have the responsibility of notifying the General Contractor's Project Manager of any Storm Water BMP deficiencies or damage.

The above listed contractor is responsible for the following BMPs: (check all that apply)

Best Management Best Management Best Management Practice  Practice  Practice  Construction Exit Diversions Solid Waste Silt Fence Sediment Traps Sanitary Waste Hazardous Waste Check Dams Sediment Basins Management Inlet Protection Dust Control Record Keeping Erosion Control Concrete Wash-out SWPPP modifications Vegetation Fuel Storage/Containment

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 31

Certification of Qualifications

City of Lincoln: Rokeby Road; S. 84th Street to S. 94th Street 16-inch Water Main Project Lincoln, NE

Certification of Compliance Officer Storm Water Qualifications

I certify under penalty of law that the Project Construction Manager: Print Name Certificate #

Project Construction Manager E-mail Address

1) is a Storm Water Professional*; or 2) has at least 5 years of construction-related experience; and 3) is able to adequately identify and implement storm water sediment and erosion control practices and effectively instruct employees and contractors in the implementation of such practices.

Contractor Company Name Date

Signature of Officer of the Company Title

*A Storm Water Professional is an individual who is currently certified through the storm water training program required pursuant to a training program approved by US EPA.

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 32

APPENDIX G

BI-WEEKLY STORMWATER CONSTRUCTION SITE INSPECTION REPORT

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 33 Bi-Weekly Stormwater Construction Site Inspection Report (Complete bi-weekly and after every storm even of 0.50 inches or more)

General Information Project Name NPDES Tracking No. Location Date of Inspection Start/End Time Inspector’s Name(s)

Inspector’s Title(s) Inspector’s Contact Information Inspector’s Qualifications Describe present phase of construction

Type of Inspection:  Regular  Pre-storm event  During storm event  Post-storm event Weather Information Has there been a storm event since the last inspection? Yes No If yes, provide: Storm Start Date & Time: Storm Duration (hrs): Approximate Amount of Precipitation (in):

Weather at time of this inspection?  Clear Cloudy  Rain  Sleet  Fog  Snowing  High Winds  Other: Temperature:

Have any discharges occurred since the last inspection? Yes No If yes, describe:

Are there any discharges at the time of inspection? Yes No If yes, describe:

Site-specific BMPs  Number the structural and non-structural BMPs identified in your SWPPP on your site map and list them below (add as many BMPs as necessary). Carry a copy of the numbered site map with you during your inspections. This list will ensure that you are inspecting all required BMPs at your site.  Describe corrective actions initiated, date completed, and note the person that completed the work in the Corrective Action Log.

BMP BMP BMP Corrective Action Needed and Notes Installed? Maintenance Required? 1 Yes No Yes No 2 Yes No Yes No 3 Yes No Yes No 4 Yes No Yes No 5 Yes No Yes No 6 Yes No Yes No 7 Yes No Yes No 8 Yes No Yes No 9 Yes No Yes No

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 34 BMP BMP BMP Corrective Action Needed and Notes Installed? Maintenance Required? 10 Yes No Yes No 11 Yes No Yes No 12 Yes No Yes No 13 Yes No Yes No 14 Yes No Yes No 15 Yes No Yes No 16 Yes No Yes No 17 Yes No Yes No 18 Yes No Yes No 19 Yes No Yes No 20 Yes No Yes No

Overall Site Issues Below are some general site issues that should be assessed during inspections. Customize this list as needed for conditions at your site.

BMP/activity Implemented? Maintenance Corrective Action Needed and Notes Required? 1 Are all slopes and Yes No Yes No disturbed areas not actively being worked properly stabilized? 2 Are natural resource Yes No Yes No areas (e.g., streams, wetlands, mature trees, etc.) protected with barriers or similar BMPs? 3 Are perimeter controls Yes No Yes No and sediment barriers adequately installed (keyed into substrate) and maintained? 4 Are discharge points Yes No Yes No and receiving waters free of any sediment deposits? 5 Are storm drain inlets Yes No Yes No properly protected?

6 Is the construction exit Yes No Yes No preventing sediment from being tracked into the street? 7 Is trash/litter from Yes No Yes No work areas collected and placed in covered dumpsters?

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 35 BMP/activity Implemented? Maintenance Corrective Action Needed and Notes Required? 8 Are washout facilities Yes No Yes No (e.g., paint, stucco, concrete) available, clearly marked, and maintained? 9 Are vehicle and Yes No Yes No equipment fueling, cleaning, and maintenance areas free of spills, leaks, or any other deleterious material? 10 Are materials that are Yes No Yes No potential stormwater contaminants stored inside or under cover?

11 Are non-stormwater Yes No Yes No discharges (e.g., wash water, dewatering) properly controlled?

12 (Other) Yes No Yes No

Non-Compliance Describe any incidents of non-compliance not described above:

CERTIFICATION STATEMENT

“I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations.”

Print name and title: ______

Signature: ______Date: ______

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 36

APPENDIX H

SPILL REPORT FORM

NOTES to General Contractor:

1) Contact the appropriate regulatory agency if the spill exceeds the applicable reportable quantity. 2) Complete this form in full for each spill that exceeds 1-gallon or exceeds the reportable quantity for the Governing Agency. 3) Transfer spill information to the Bi-weekly report and resolve as appropriate.

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 37 Spill Report Form

City of Lincoln: Rokeby Road; S. 84th Street to S. 94th Street 16-inch Water Main Project Lincoln, NE

Spill Reported by:

Date/Time Spill:

Describe spill location and events leading to spill:

Material spilled:

Source of spill:

Amount spilled: Amount spilled to waterway:

Containment or clean up action:

Approximate depth of soil excavation:

List Injuries or Personal Contamination:

Action to be taken to prevent future spills:

Modifications to the SWPPP necessary due to this spill:

Agencies notified of the spill:

I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations.

Project Construction Manager Date

IMMEDIATELY COMPLETE IF THE SPILL EXCEEDS 1-GALLON or EXCEEDS THE REPORTABLE QUANTITY FOR THE GOVERNING AGENCY. SEE SECTION V, PART B.9. OF THE SWPPP TO DETERMINE THE REPORTABLE QUANTITY FOR GOVERNING AGENCY.

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 38

APPENDIX I

NOTICE OF TERMINATION (NOT)

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 39

Construction Storm Water Notice of Termination (CWS-NOT)

Two copies of the Notice of Termination (NOT) must be completed for the SWPPP specifications when construction activities that disturb site soil have been completed and the site has achieved final stabilization. One copy shall be forwarded to each of the following:

City of Lincoln Water System 2021 N. 27th Street Lincoln, Nebraska 68503 402.441.7571

Olsson Associates 601 P Street, Suite 200 Lincoln, Nebraska 68508 402.474.6311

Nebraska Department of Environmental Quality Water Quality Division Storm Water Suite 400, The Atrium 1200 N Street PO Box 98922 Lincoln, NE 68509-8922 402.471.2186

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 40 Attachment # 3

Construction Storm Water Notice of Termination (CSW-NOT)

1. Termination Prerequisites a. Have the final stabilization requirements been met on the entire site? [See Part III.M]; YES NO b. Has the entire Construction Activity been transferred to another operator/permittee who has received authorization under the conditions of a NPDES permit for Storm Water runoff? [See Part V] OR has coverage under an alternative NPDES permit been obtained by the same operator/permittee? YES NO

What is the alternative NPDES Permit Number? NER______If any of the termination prerequisite questions are answered Yes, complete the remaining NOT form.

Construction Storm Water – Notice of Termination (CSW - NOT) 2. Project Information NPDES General Permit Number: NER110000 Permit Authorization Number: NER______

Project Name (from original CSW-NOI): ______3. Signature The appropriate individuals must sign information submitted on this CSW-NOT form as required in NPDES General Permit NER110000 Part VI.D.6 or the authorization will not be terminated.

______Certifying Official Signature Date

______Print Certifying Official Signature

Submit this form to: Water Quality Division Storm Water Suite 400, The Atrium 1200 ‘N’ Street PO Box 98922 Lincoln NE 68509-8922 Telephone. 402/471-4220 Fax: 402/471-2909

Page 1 of 1

APPENDIX J

RECORD OF STABILIZATION AND CONSTRUCTION ACTIVITY DATES

NOTE to General Contractor:

The General Contractor shall complete at least 1-page of stabilization and grading activities for each month of active construction.

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 41 Site Stabilization and Construction Activity Dates

A record of dates when BMPs are installed or removed, stabilization measures are initiated, major grading activities occur, and construction activities temporarily or permanently cease on a portion of the site shall be maintained until final site stabilization is achieved and the Notice of Termination (NOT) is filed. This form must be updated continuously throughout the project until the NOT is filed.

MAJOR STABILIZATION AND GRADING ACTIVITIES

Description of Activity:______Site Contractor: ______Begin (date): ______End(date):______Location:______

Description of Activity:______Site Contractor: ______Begin (date): ______End(date):______Location:______

Description of Activity:______Site Contractor: ______Begin (date): ______End(date):______Location:______

Description of Activity:______Site Contractor: ______Begin (date): ______End(date):______Location:______

Description of Activity:______Site Contractor: ______Begin (date): ______End(date):______Location:______

Description of Activity:______Site Contractor: ______Begin (date): ______End(date):______Location:______

Description of Activity:______Site Contractor: ______Begin (date): ______End(date):______Location:______

Description of Activity:______Site Contractor: ______Begin (date): ______End(date):______Location:______

Description of Activity:______Site Contractor: ______Begin (date): ______End(date):______Location:______

Description of Activity:______Site Contractor: ______Begin (date): ______End(date):______Location:______

Description of Activity:______Site Contractor: ______Begin (date): ______End(date):______Location:______

Description of Activity:______Site Contractor: ______Begin (date): ______End(date):______Location:______

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 42

APPENDIX K

FEDERAL, STATE, OR LOCAL STORM WATER OR OTHER ENVIRONMENTAL INSPECTOR SITE VISIT LOG

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 43 Federal, State, or Local Storm Water or other Environmental Inspector Site Visit Log

Inspectors Name: Agency:

Contractors Representative Present:

Others Present:

Comments:

Time and Date: Report Prepared: Yes No

Inspectors Name: Agency:

Contractors Representative Present:

Others Present:

Comments:

Time and Date: Report Prepared: Yes No

Inspectors Name: Agency:

Contractors Representative Present:

Others Present:

Comments:

Time and Date: Report Prepared: Yes No

Applicant (Cognizant Official) and Owner’s Engineer must be contacted at the conclusion of any agency inspection of the site. Caller must provide as a minimum the date, inspection beginning and completion times, inspecting agency, agency inspector name, all contractor representative names, and a brief summary of any comments, observations or deficiencies noted during the inspection.

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 44

APPENDIX L

MATERIAL CERTIFICATION STATEMENT

The General Contractor shall coordinate completion of the following forms, as applicable, found in this Appendix:

1) Material Storage, Borrow or Disposal Manifest

The General Contractor shall also complete and keep current the Off-site Material information box on the project Site Maps.

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 45

Material Storage, Borrow, or Disposal Manifest To or From Sites Outside of Permitted Limits of Disturbance

Project #: Location: General Contractor: Storm Water Contact (name & phone #):

MATERIAL STORAGE, BORROW, OR DISPOSAL AREA INFORMATION NAME OF FACILITY MATERIAL IS BEING TRANSFERRED TO OR FROM

ADDRESS

FACILITY CONTACT NAME AND TITLE MAILING ADDRESS PHONE

GENERAL DESCRIPTION OF STORAGE, BORROW, OR DISPOSAL (E.G., TOP SOIL / CLAY/ SAND / ROCK)

1) WHO WILL RESPONSIBLE FOR TRANSPORTING THE MATERIAL? PROVIDE CONTACT INFORMATION ______

2) DATES OF STORAGE, BORROW, OR DISPOSAL START DATE ______END DATE ______

3) MATERIAL PROVIDED TO SITE - TOTAL QUANTITY ESTIMATE (CU-YD) ______

OR MATERIAL ACCEPTED FROM SITE - TOTAL QUANTITY ESTIMATE (CU-AD) ______

4) THE STORAGE, BORROW, OR DISPOSAL SITE IS:

ACTIVE CONSTRUCTION SITE? INDUSTRIAL FACILITY (E.G., MINING)? UNDER ACTIVE AGRICULTURAL PRODUCTION? OTHER (DESCRIBE) ______

5) AREA OF THE STORAGE, BORROW, OR DISPOSAL SITE? (AC) TOTAL ______DISTURBED ______

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 46

APPENDIX M

GENERAL PERMIT

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 47 STATE OF NEB RASKA

Pete Ricketts DEPARTMENT Of' ENVIRONMENTAL QUALITY Gow;rnor Jim Macy Director Suite 400, The Atrium 1200 'N' Street P.O. Box 98922 Lincoln, Nebraska 68509-8922 Phone (402) 4 71-2186 FAX (402)471-2909 Authorization to Discharge Under the website: http://deq.ne.gov National Pollutant Discharge Elimination System (NPDES) General NPDES Permit Number NERI 60000 for Storm Water Discharges from Construction Sites to Waters of the State of Nebraska

This NPDES general permit is issued in compliance with the provisions of the Federal Water Pollution Control Act (33-U_s_c_ Secs, 1251 et_ seq. as amended to date), the Nebraska Environmental Protection Act (Neb. Rev. Stat. Secs. 81-1501 et. seq. as amended to date), and the Rules and Regulations promulgated pursuant to these Acts. Application may be made under this general permit are authorized to discharge storm water from construction sites_ Owners or operators issued a discharge authorization under this general permit are required to comply with the limits, requirements, prohibitions, and conditions set forth herein. The issuance of a discharge authorized under this general permit does not relieve permittees of other duties and responsibilities under the Nebraska Environmental Protection Act, as amended, or established by regulations promulgated pursuant thereto.

NPDES Permit No_: ·NER160000 NDEQIDNo.: 995907 Effective Date: November 1, 2016 Expiration Date: October 31, 2021

Pursuant to a Delegation Memorandum dated August 22, 2016, and signed by the Director, the undersigned hereby executes this document on behalf of the Director.

Page 1 of24 Nebraska Construction Storm Water General Permit November 1, 2016 NPDES Permit No. NER160000 Page 2 of 24

Table of Contents

Part I. Coverage Under this Permit ...... 3 A. Introduction ...... 3 B. Permit Area ...... 3 C. Eligibility ...... 3 Part II. Authorization for Discharges of Storm Water from Construction Activity ...... 5 A. Authorization to Discharge Date ...... 5 B. CSW Notice of Intent Contents ...... 5 C. Submission Deadlines ...... 6 D. Additional Requirements ...... 6 Part III. Storm Water Pollution Prevention Plans (SWPPP) ...... 6 A. Storm Water Pollution Prevention Plan Framework ...... 6 B. Pollution Prevention Plan Contents: Site and Activity Description ...... 7 C. Storm Water Pollution Prevention Plan to Eliminate or Minimize Pollution ...... 7 D. Non-Storm Water Discharge Management ...... 8 E. Construction Storm Water Effluent Limitation Guidelines ...... 8 F. Maintenance of Control BMPs ...... 9 G. Permit Eligibility Related to Endangered Species ...... 10 H. SWPPP Accompanying Documents ...... 10 I. Applicable State or Local Requirements ...... 11 J. Inspections ...... 11 K. Maintaining an Updated Plan ...... 12 L. Making Plans Available ...... 12 Part IV. Special Conditions, Management Practices, Other Non-Numeric Limitations ...... 12 A. Requiring an Individual Permit or an Alternative General Permit ...... 12 B. Oil and Hazardous Substances/Spill Notification ...... 13 C. Attainment of Water Quality Standards after Authorization ...... 13 D. Discharges Affecting Endangered or Threatened Species ...... 14 E. Discharged Affecting Historical Places or Archeological Sites ...... 14 F. Activities/Discharges Subject to other Applicable Regulations ...... 14 G. Continuation of the Expired General Permit ...... 14 Part V. Termination, Transfer, or Reassignment of Permit Coverage ...... 15 A. Notice of Termination Requirements ...... 15 B. Submitting a Notice of Termination ...... 15 C. Transfer of Permit ...... 15 Part VI. Standard Conditions and Requirements ...... 16 A. Other Conditions ...... 16 B. Procedures for Modification or Revocation ...... 16 C. Timing of Permit Modification ...... 16 D. Management Requirements ...... 17 E. Monitoring and Records Requirements ...... 18 F. General Requirements ...... 18 Part VII. Definitions ...... 19 Reference List A: Abbreviations ...... 23 Table of Contents for Appendix A ...... 24

Appendix A – Conditions Applicable to all NPDES Permits Appendix B – List of MS4s in the State of Nebraska

The first occurrence of terms are written in BOLDFACE and are defined in this permit in Part VII - Definitions

Nebraska Construction Storm Water General Permit November 1, 2016 NPDES Permit No. NER160000 Page 3 of 24

Part I. Coverage Under this Permit A. Introduction This permit is required and shall apply to storm water or non-storm water discharges associated with construction activity that causes land disturbance of equal to or greater than one acre and less than one acre if the construction activity is part of a common plan of development or sale. All references in this permit to construction activity shall be read to include both large construction activity and small construction activity. This permit authorizes the discharge of storm water from construction activity entering Waters of the State, a municipal separate storm sewer system (MS4), or a combined sewer system (CSO) within the State of Nebraska. Discharges are subject to the specific terms and conditions in this permit. This permit also authorizes storm water discharges from any other construction activities designated by the Director because of concern that they may produce an excursion to water quality standards or contribute to a significant pollution discharge to Waters of the State. The Director may authorize permit coverage in these circumstances with the intent of reducing or eliminating storm water pollution from the construction activity by requiring implementation of effective pollution control measures or practices. B. Permit Area This permit provides coverage for construction and support activity throughout the State of Nebraska excluding tribal land within the State of Nebraska and as per limitations in Part I.C.4 of this permit. C. Eligibility Permit eligibility is limited to discharges from construction activity as defined in Part VII of this permit or as otherwise designated by the Director. This general permit contains eligibility restrictions, as well as permit conditions and requirements. These eligibility provisions must be continued to be satisfied to maintain permit authorization. If the permittee does not meet the requirements that are a precondition to eligibility, then resulting discharges constitute unpermitted discharges. Conversely, if the permittee does not comply with the requirements of the general permit, the permittee may be in violation of the general permit for otherwise eligible discharges. 1. Allowable Storm Water Discharges Subject to compliance with the terms and conditions of this permit, the permittee is authorized to discharge pollutants in: a. Storm water associated with large and small construction activity as defined in Part VII; b. Storm water discharges designated by the Director requiring a storm water permit under NDEQ Title 119, Rules and Regulations Pertaining to the Issuance of Permits under the National Pollutant Discharge Elimination System (NPDES) Chapter 2.002.06E. c. Part I.C.1.a and Part I.C.1.b allowable discharges commingled with an authorized discharge by a different NPDES permit and/or a discharge that does not require NPDES permit authorization; and d. Storm water discharges from support activities (e.g., concrete or asphalt batch plants, equipment staging yards, material storage areas, excavated material disposal areas, borrow areas, etc.) provided: 1) The support activity is directly related to the construction site required to have NPDES permit coverage for discharges of storm water associated with construction activity; 2) The support activity is not a commercial operation serving multiple unrelated construction projects by different operators, and does not operate beyond the completion of the construction activity at the last construction project it supports; and 3) Appropriate controls and measures are identified in a Storm Water Pollution Prevention Plan (SWPPP) covering discharges from the support activity areas. 2. Allowable Non-Storm Water Discharges The permittee is authorized for the following: a. Discharges from firefighting activities; b. Fire hydrant flushings; c. Water used to wash vehicles where detergents are not used;

Nebraska Construction Storm Water General Permit November 1, 2016 NPDES Permit No. NER160000 Page 4 of 24 d. Water used to control dust; e. Potable water including uncontaminated water line flushings; f. Routine external building wash down that does not use detergents; g. Pavement wash water where spills or leaks of toxic or hazardous materials have not occurred (unless all spilled material has been recovered) and where detergents are not used; h. Uncontaminated air conditioning or compressor condensate; i. Uncontaminated groundwater or spring water; j. Foundation or footing drains where flows are not contaminated with process materials such as solvent; and k. Landscape irrigation. 3. Prohibited Non-Storm Water Discharges The permittee is prohibited for discharging the following: a. Wastewater from the washout of concrete, unless managed by appropriate control; b. Wastewater from the washout and cleanout of stucco, paint, form release oils, curing compounds, and other construction materials; c. Fuels, oils, and other pollutants used in vehicle and equipment operation and maintenance; and d. Soaps or solvents used in vehicle equipment washing. 4. Limitations on Coverage This permit does not authorize the following storm water runoff conditions and may be the basis for denial or termination of authorization under this general permit. The Department shall be consulted prior to the permittee’s submission of the construction storm water Notice of Intent CSW-NOI if any of the following conditions apply: a. This permit does not authorize post-construction discharges that originate from the site after construction activities have been completed and the site has achieved final stabilization including activities at temporary support sites. Post-construction storm water discharges from industrial sites may need to be covered by a separate NPDES permit; b. This permit does not authorize discharges mixed with non-storm water. This exclusion does not apply to discharges identified in Part I.C.2 provided the discharges are in compliance with Part III.D. c. This permit does not authorize storm water discharges associated with construction activity that have been covered under an individual NPDES permit or required to obtain coverage under an alternative general permit in accordance with Part IV.A; d. This permit does not authorize discharges that the Director, prior to authorization under this permit, determines will cause, have the reasonable potential to cause, or contribute to an excursion above any applicable water quality or groundwater quality standards. Where such a determination is made prior to authorization, the NDEQ may notify the permittee that an individual application is necessary in accordance with Part IV.A. However, the NDEQ may authorize coverage under this permit after the permittee has included appropriate controls and implementation procedures in the SWPPP designed to bring the site discharge into compliance with water quality standards; e. Storm water runoff from construction activity within the limits of an Indian lands under the jurisdiction of the United States Government, dependent Indian communities within the borders of the United States, or other Indian allotments; f. Non-point source agricultural and silvicultural discharges; g. Storm water effluent guidelines limitations apply to; 1) Those from an operating landfill; 2) Storm water runoff that may adversely impact critical habitat of aquatic related, threatened, or endangered species as designated by Nebraska Game and Parks Commission or the U.S. Fish and Wildlife Service. 3) Storm water runoff that may adversely affect properties listed or eligible for listing in the National Register of Historic Places or affecting known or discovered archeological sites; or 4) Those that the Director determines would be more effectively regulated with a site-specific, area- specific, or a basin-specific permit.

Nebraska Construction Storm Water General Permit November 1, 2016 NPDES Permit No. NER160000 Page 5 of 24 5. Period of Coverage a. This permit is effective for five (5) years from the issue date. b. Coverage shall commence at the time discharge authorization is granted and shall continue for a period lasting up to 180 days after final stabilization and Notice of Termination is received for the site. c. The permittee shall be responsible for ensuring that final stabilization is accomplished on all non- impervious surfaces of the authorized construction site prior to submitting form CSW-NOT. d. Coverage under this permit is normally terminated 180 calendar days after: 1) All soil disturbing construction activity has been completed; 2) A uniform perennial vegetative cover with a minimum density of 70 percent of the native background vegetative cover, has been established on all non-impervious surfaces and areas not covered by permanent structures unless equivalent permanent stabilization (such as riprap, gabions, and geotextiles) measures have been employed; 3) All permanent drainages, constructed to drain water from the site, has been stabilized to prevent erosion; 4) All temporary erosion protection and sediment control BMPs have been removed without compromising the permanent erosion protection and sediment control BMPs; 5) All sediment build-up has been removed from conveyances and basins that are to be used as permanent water quality management BMPs. The cleanout of permanent basins used as temporary BMPs during construction shall be sufficient to return the basin to design capacity; 6) Responsibility for long-term maintenance of permanent BMPs have been assigned; 7) Construction activity conducted on or through agricultural or silvicultural land shall be considered finally stabilized upon return to the preexisting agriculture or silviculture use; and 8) Construction activity conducted at new or industrial facilities that will operate the site in an exposed manner (such as limestone mining and solid waste landfills) shall be considered finally stabilized upon commencement of industrial activity consistent with the industrial use and coverage under the appropriate NPDES permit for industrial storm water. e. The Director can extend coverage under the permit beyond the time period specified in this section if excessive erosion problems remain at the site. Part II. Authorization for Discharges of Storm Water from Construction Activity A complete and accurate construction storm water Notice of Intent (CSW-NOI), as described in this Part II, must be submitted to NDEQ for coverage under the general permit. Discharges are not authorized if the CSW-NOI is incomplete, inaccurate, or ineligible for coverage under the permit. A. Authorization to Discharge Date 1. The Department will confirm all authorized permits. However, the permittee is authorized to discharge storm water from construction activities under the terms and conditions of the general permit seven (7) calendar days after submittal to the NDEQ of a complete and accurate CSW-NOI (e.g., seven (7) days from date of submittal), except as noted in Part II.A.2. 2. The Director may delay authorization based on eligibility considerations of Part I.C. In these instances, the permittee is not authorized to discharge until reception of notice from NDEQ that the project activities are eligible for coverage under the permit. B. CSW Notice of Intent Contents The permittee should use the CSW-NOI form provided on the NDEQ website. The permittee must provide the following information on the CSW-NOI form: 1. Project/site name, address, county or similar governmental subdivision, and latitude/longitude or legal description of the construction project or site; 2. The certifying official’s legal name, company, address, email, and phone number; 3. The SWPPP designer’s name, company, address, email, and phone number; 4. The location where the applicable SWPPP may be viewed;

Nebraska Construction Storm Water General Permit November 1, 2016 NPDES Permit No. NER160000 Page 6 of 24 5. A site map as described in Part III.B.1.d of this permit; 6. Name of the water(s) of the state into which your site discharges; 7. Estimated dates of commencement of construction activity and final stabilization (e.g., project start and completion dates); 8. Total acreage (to the nearest quarter-acre) to be disturbed for which the permittee is requesting permit coverage; 9. Any state or federally-listed threatened or endangered species, or state or federally designated critical habitat in the project area to be covered by this permit; 10. A certification statement, signed and dated by a certifying official as defined in Part VI.D.6. C. Submission Deadlines 1. New Projects: The permittee must submit a complete and accurate CSW-NOI and be authorized consistent with Part II.A.1 prior to commencement of construction activities. 2. Ongoing Projects Currently Permitted under the CSW-2008 General Permit: If the permittee wishes to continue coverage under the CSW-2008 general permit: a. Submit a CSW-NOI, available on the NDEQ website, within 180 days of the issuance date of the new general permit; and b. Until the permittee is authorized under the new general permit consistent with Part II.A, comply with the terms and conditions of the CSW-2008 general permit under which the permittee is currently authorized. c. If the permittee meets the termination of coverage requirements in accordance with Part V.A within 180 days of the issuance date of the new general permit such as construction activities that will have achieved final stabilization, the permittee must: 1) Submit a CSW-NOT using the form provided on the NDEQ website; and 2) Until coverage is no longer required, comply with the terms and conditions of the CSW-2008 general permit. 3. Late Notifications: When a late CSW-NOI is submitted for discharges otherwise consistent with Part II.A, the Department reserves the right to take enforcement action for any unpermitted discharges that occur between the commencement of construction and discharge authorization. Such discharges may have occurred during initiating clearing, grading, excavation activities, or other construction activities. D. Additional Requirements 1. The Department may request additional information from the source: a. To facilitate the review of the CSW-NOI; b. To finalize a determination related to the granting of a discharge authorization; or c. To determine when a site-specific, area-specific, or basin-specific permit application may be required. 2. When storm water is discharged through municipal separate storm sewer systems (MS4s), applicants shall submit a copy of their CSW-NOI and approval letter to the operator of the municipal separate storm sewer system through which they discharge, prior to commencement of construction. Appendix B has a listing of those municipalities that are permitted under the Municipal Separate Storm Sewer System program. 3. Other governmental agencies (e.g., U.S. Army Corps of Engineers, Local City/State Government, or the local Natural Resource District) may have additional notification requirements. Submittal of the NPDES form CSW-NOI does not relieve the applicant of responsibility to comply with the requirements of other government agencies.

Part III. Storm Water Pollution Prevention Plans (SWPPP) A. Storm Water Pollution Prevention Plan Framework 1. A SWPPP must be prepared prior to submission of a CSW-NOI as required in Part II.B. The SWPPP must be prepared by qualified personnel. 2. The SWPPP must:

Nebraska Construction Storm Water General Permit November 1, 2016 NPDES Permit No. NER160000 Page 7 of 24 a. Identify all potential sources of pollution with may reasonably be expected to affect the quality of storm water discharges from the construction site; b. Minimize erosion on disturbed areas and minimize the discharge of sediment and other pollutants in storm water runoff; c. Describe controls to be used to reduce pollutants in storm water discharges from the construction site; and d. Assure compliance with the terms and conditions of this permit. 3. Once a definable area has achieved final stabilization, the permittee may mark on the SWPPP site plan map that no further SWPPP requirements apply to that portion of the site. For example, when earth- disturbing activities around one of three buildings in a complex is completed and the area is finally stabilized, or one mile of a roadway or pipeline project is done and finally stabilized, etc. 4. The permittee must implement the SWPPP and modifications to the SWPPP from commencement of construction activity until final stabilization is complete. B. Pollution Prevention Plan Contents: Site and Activity Description 1. The SWPPP must describe the nature of the construction activity including: a. The function of the project (e.g., low-density residential, shopping mall, highway, etc.); b. The intended sequence and timing of activities that disturbs land on the site; c. Estimates of the total area expected to be disturbed by excavation, grading, or other construction activities, including permittee-controlled offsite borrow and fill areas; and d. A general location map (e.g., USGS quadrangle map, a portion of the city or county map, or other map) with enough detail to identify the location of the construction site and water(s) of the state within one mile of the site. 2. The SWPPP must contain a legible site map(s) showing the entire site during grading, construction, and post-construction phases, identifying: a. Direction(s) of storm water flow and approximate slopes anticipated after major grading activities; b. Areas of land disturbance and areas of land that will not be disturbed; c. Locations of major structural and nonstructural Best Management Practices (BMPs); d. Locations where stabilization practices are expected to occur; e. Locations of onsite or offsite material, waste, borrow or equipment storage areas; f. Locations of all Waters of the State, including wetlands; g. Locations where storm water discharges to a surface water; and h. Location of the perimeter controls, if used, installed to retain sediment from storm water runoff from earth disturbing activities. i. Areas where final stabilization has been accomplished and no further construction-phase permit requirements apply. 3. The SWPPP must contain documentation of the following site and activity records: a. Dates when major grading activities occur; b. Dates when construction activities temporarily or permanently cease on a portion of the site; and c. Dates when stabilization measures are initiated. C. Storm Water Pollution Prevention Plan to Eliminate or Minimize Pollution The SWPPP must include a description of all pollution control measures (e.g., BMPs) that will be implemented as part of the construction activity to control pollutants in storm water discharges. BMPS and work practices should follow the requirements set forth in 40 CFR Part 450. Each major activity identified in the project description of the SWPPP must clearly describe the planned controls and the general sequence during the construction process in which the measures will be implemented. The SWPPP must include: 1. A description of interim and permanent stabilization practices for the site including a schedule of when the measures and practices will be implemented. 2. A description of all temporary construction storm water management measures that retain/detain flows or otherwise limit runoff and the discharge of pollutants from exposed areas of the construction site. 3. A description of all post-construction storm water management measures that retain/detain flows or otherwise limit runoff and the discharge of pollutants.

Nebraska Construction Storm Water General Permit November 1, 2016 NPDES Permit No. NER160000 Page 8 of 24 4. A description of the controls to be used to prevent the following prohibited discharges: a. Wastewater from washout of concrete, unless managed by an appropriate control implemented according to industry standards; b. Wastewater from washout and cleanout of stucco, paint, form release oils, curing compounds and other construction materials, unless managed by an appropriate control implemented according to industry standards; c. Fuels, oils, or other pollutants used in vehicle and equipment operation and maintenance; d. Soaps, solvents, or detergents used in vehicle and equipment washing; and e. Toxic or hazardous substances from a spill or other release. 5. A description of measures to minimize, to the extent practicable, vehicle tracking of sediments offsite onto paved surfaces and the generation of dust. The following must be included with this requirement: a. Restrict vehicle use to properly designated exit points. If designated exit points are modified or added to the site, update SWPPP accordingly; b. Use appropriate stabilization techniques at all points that exit onto paved roads so that sediment removal occurs prior to vehicle exit; c. Where necessary, use additional controls to remove sediment from vehicle tires prior to exit; and d. Where sediment has been tracked-out from your site onto the surface of off-site streets, other paved areas, and sidewalks, the deposited sediment must be removed by the end of the same work day in which the track-out occurs or by the end of the next work day if track-out occurs on a non-work day. 6. A description of construction materials, products and waste materials expected to be stored at the construction site or supporting areas. The description to include controls and storage practices to minimize exposure of the materials to storm water and storm water runoff. 7. If fueling and/or maintenance of equipment or vehicles at the construction site or supporting areas, an effective means of eliminating the discharge of spilled or leaked chemicals, including fuel, from the area must be implemented by at minimum: a. Ensuring adequate supplies are available at all times to handle spills, leaks, and disposal of used liquids; b. Using drip pans and absorbents under or around leaky vehicles; c. Disposing of or recycle oil and oily wastes in accordance with other federal, state, tribal, or local requirements; d. Cleaning up spills or contaminated surfaces immediately, using dry clean up measures where possible, and eliminate the source of the spill to prevent a discharge or a furtherance of an ongoing discharge; and e. Not cleaning surfaces by hosing the area down. 8. Spill prevention control and countermeasure plan (SPCC), if facility possesses an SPCC plan. 9. A description of potential pollutant sources and the controls and measures to be implemented at supporting areas of the construction site such as dedicated asphalt plants or dedicated concrete plants. 10. A description of controls for discharges from stockpiled sediment or soil. 11. A description of controls to minimize dust through appropriate water or other dust suppression techniques. D. Non-Storm Water Discharge Management The SWPPP must identify all allowable sources of non-storm water discharges listed in Part I.C.2 of this permit, except for flows from firefighting activities that are combined with storm water discharges associated with construction activity at the site. Non-storm water discharges should be eliminated or reduced to the extent feasible. The SWPPP must identify and ensure the implementation of appropriate pollution prevention measures for the non-storm water component(s) of the discharge. E. Construction Storm Water Effluent Limitation Guidelines 1. Any new source must achieve, at a minimum, the control BMPs in this permit. 2. All construction point sources must achieve the following erosion and sediment controls: a. Control storm water volume and velocity to minimize soil erosion in order to minimize pollutant discharges;

Nebraska Construction Storm Water General Permit November 1, 2016 NPDES Permit No. NER160000 Page 9 of 24 b. Control storm water discharges, including both peak flow rates and total storm water volume, to minimize channel and streambank erosion and scour in the immediate vicinity of discharge points; c. Minimize the amount of soil exposed during construction activity; d. Minimize the disturbance of steep slopes; e. Minimize sediment discharges from the site. The design, installation and maintenance of erosion and sediment controls must address factors such as the amount, frequency, intensity, and duration of precipitation, the nature of resulting storm water runoff, and soil characteristics, including the range of soil particle sizes expected to be present on the site; f. Provide and maintain natural buffers around Waters of the United States unless the construction activity is dependent, direct storm water to vegetated areas and maximize storm water infiltration to reduce pollutant discharges; g. Minimize soil compaction. Minimizing soil compaction is not required where the intended function of a specific area of the site dictates that it is to be compacted; and h. Preserve topsoil, unless infeasible. Preserving topsoil is not required where the intended function of a specific area of the site dictates that the topsoil be disturbed or removed. 3. Soil stabilization of disturbed areas must, at a minimum, be initiated immediately, unless infeasible. Stabilization is required when any clearing, grading, excavating or other earth disturbing activities have permanently ceased on any portion of the site, or temporarily ceased on any portion of the site and will not resume for a period exceeding 14 calendar days. In arid, semiarid, and drought-stricken areas where initiating vegetative stabilization measures immediately is infeasible, alternative stabilization measures must be employed as specified by the permitting authority. In limited circumstances, stabilization may not be required if the intended function of a specific area of the site necessitates that it remain disturbed. 4. Discharges from dewatering activities, including discharges from dewatering of trenches and excavations, are prohibited unless managed by appropriate controls. 5. Design, installation, implementation, and maintenance of effective pollution prevention measures shall at the minimum: a. Minimize the discharge of pollutants from equipment and vehicle washing, wheel wash water, and other wash waters. Wash waters must be treated in a sediment basin or alternative control that provides equivalent or better treatment prior to discharge; b. Minimize the exposure of building materials, building products, construction wastes, trash, landscape materials, fertilizers, pesticides, herbicides, detergents, sanitary waste and other materials present on the site to precipitation and to storm water. Minimization of exposure is not required in cases where the exposure to precipitation and to storm water will not result in a discharge of pollutants, or where exposure of a specific material or product poses little risk of storm water contamination (such as final products and materials intended for outdoor use); and c. Minimize the discharge of pollutants from spills and leaks and implement chemical spill and leak prevention and response procedures. 6. When a site is discharging from basins and impoundments, the site must utilize outlet structures that withdraw water from the surface, unless infeasible. F. Maintenance of Control BMPs 1. Stabilization measures must be initiated as soon as practicable but no later than fourteen (14) days in portions of the construction site that have temporarily or permanently ceased except as provided below: a. Where snow or frozen ground conditions preclude stabilization within 14 days; b. When earth disturbing construction activities will resume within 14 days; c. When perennial vegetative stabilization measures are not possible within 14 days due to semiarid climates or drought stricken conditions; or d. When storm runoff velocity dissipation features have yet to be installed along the length of an outfall channel that would protect natural physical and biological characteristics and functions such as the hydrological regime of the receiving water. 2. Installation of stabilization measures must be completed within 14 days. 3. Preserve topsoil where practicable. 4. Minimize soil compaction after final vegetative stabilization has begun.

Nebraska Construction Storm Water General Permit November 1, 2016 NPDES Permit No. NER160000 Page 10 of 24 5. Minimize the disturbance of steep slopes to prevent erosion and implement controls as needed for disturbed slopes. 6. Contaminated or turbid groundwater, accumulated storm water, or non-storm water may not be discharged unless such waters are effectively managed by effective controls. 7. When sediment escapes the construction site boundaries, the offsite accumulations must be removed promptly to minimize the disturbance. In addition, the erosion controls for that portion of the project must be reviewed for adequacy of design and/or implementation to prevent reoccurrence with updates or modifications to the SWPPP as appropriate. 8. Temporary Construction Control BMPs a. All temporary control measures must be properly selected, installed, and maintained in accordance with relevant manufacturer specifications, good engineering practices, and applicable federal, state, and local requirements. b. If periodic inspections or other information indicates a control has been installed incorrectly or if the control implemented as planned is ineffective, the operator must either correct the deficiencies of the existing control or modify that portion of the SWPPP plan and implement effective controls as soon as practicable. See Part III.J for site inspection requirements. c. Corrective actions must be completed within seven (7) days or before the next storm event whichever is practicable. d. If corrective actions before the next storm event is impracticable, the situation must be documented in the SWPPP and alternative BMPs must be implemented as soon as possible. e. Sediment from sediment traps or sedimentation ponds must be removed when design capacity has been reduced by 50 percent. 9. Permanent Post-Construction Controls (Permanent BMPs) a. All permanent control measures must be properly selected, installed, and maintained in accordance with relevant manufacturer specifications, good engineering practices and applicable federal, state, and local requirements. b. Permanent post-construction BMPs put into service during construction activities must be maintained the same as temporary construction control BMPs by the operator during construction. c. Groundwater infiltration must be considered a priority BMP unless recharge will impair highest beneficial use of groundwater or discharge to a designated waterbody is preferable. G. Permit Eligibility Related to Endangered Species The SWPPP must include documentation supporting a determination of permit eligibility with regard to endangered species including: 1. Information on whether state or federally-listed endangered or threatened species, or designated critical habitat may be in the project area; 2. Whether such species or critical habitat may be adversely affected by storm water discharges or storm water discharge-related activities from the project; 3. Any correspondence for any stage of project planning between the U.S. Fish and Wildlife Service (FWS), Nebraska Game and Parks Commission (NGPC), EPA, NDEQ, or others and the permittee regarding listed species and critical habitat, including any notification that delays the authorization to discharge under this permit; 4. A description of measures necessary to protect state and federally-listed endangered or threatened species, or state and federally designated critical habitat. The permittee must describe and implement such measures to be eligible for coverage under this permit. This description does not relieve permittee of responsibilities under the Federal Endangered Species Act or Nebraska Nongame and Endangered Species Conservation Act. H. SWPPP Accompanying Documents A copy of the signed and certified CSW-NOI and NDEQ’s approval letter notifying the permittee that the CSW-NOI is administratively complete must accompany the SWPPP once available.

Nebraska Construction Storm Water General Permit November 1, 2016 NPDES Permit No. NER160000 Page 11 of 24 I. Applicable State or Local Requirements The SWPPP must be consistent with all applicable federal, state, or local requirements for erosion control and storm water management including updates to the SWPPP as necessary to reflect any revisions to applicable federal, state, or local requirements. J. Inspections 1. Inspections must be conducted at least once every fourteen (14) calendar days, and within 24 hours of the end of a storm even of one-half (0.5) inches or greater. See Part III.F for actions and time frames required to address ineffective BMPs. 2. Inspection frequency may be reduced to at least once every month if: a. The entire site is temporarily stabilized; b. Runoff is unlikely due to winter conditions (e.g., site is covered with snow, ice, or the ground is frozen); c. Reduced inspection frequency does not relieve the permittee of the maintenance responsibilities during interim periods. 3. Inspections must be conducted by qualified personnel provided by the operator or cooperatively by multiple operators. 4. Representative inspections may be conducted on long narrow linear construction such as utility lines and pipelines construction projects when inspection vehicle access may increase the potential for erosion. In these circumstances, controls must be inspected at the permit specified frequency, and include a representational portion of the construction that extends a quarter (0.25) mile above and below access points not to exceed the reach of the project where a roadway, undisturbed right-of-way, or other similar feature intersects the construction site. 5. The following areas at minimum must be inspected: a. All areas that have been cleared, graded, or excavated and that have not yet completed stabilization; b. All storm water controls installed at the site to comply with this permit; c. Material, waste, borrow, or equipment storage and maintenance areas covered by this permit that are managed by the owner and/or operator; d. All areas where storm water typically flows within the site, including drainage ways designed to divert, convey, and/or treat storm water; e. All points of discharge from the site, unless considered unsafe or inaccessible using the best professional judgment of the inspector; and f. All locations where stabilization measures have been implemented. 6. For each inspection required above, the permittee must complete an inspection report. At a minimum, the inspection report must include: a. The inspection time and date; b. Names and titles of personnel making the inspection; c. Weather information for the period since the last inspection (or since commencement of construction activity if this is the first inspection) including a best estimate using publically accessible data of the beginning of each storm event, duration of each storm event, approximate amount of rainfall for each storm event (in inches), and whether any discharges occurred; d. Weather information and a description of any discharges occurring at the time of the inspection; e. Location(s) of discharges of sediment or other pollutants from the site; f. Location(s) of BMPs that need to be maintained; g. Location(s) of BMPs that failed to operate as designed or proved inadequate; h. Monitoring results if requested; i. Records of grading activity since last inspection; j. Location(s) where additional BMPs are needed that did not exist at the time of inspection; and k. Corrective action that required changes to the SWPPP and the date the plan changes were implemented. 7. A record of each inspection and of any actions taken must be retained as part of the SWPPP for at least three (3) years from the date that permit coverage expires or is terminated. The inspection reports must identify any incidents of non-compliance with the permit conditions. Where a report does not identify

Nebraska Construction Storm Water General Permit November 1, 2016 NPDES Permit No. NER160000 Page 12 of 24 any incidents of non-compliance, the report must contain a certification that the construction project or site is in compliance with the SWPPP and this permit. The report must be signed in accordance with Part VI.D.6 of this permit. K. Maintaining an Updated Plan 1. The SWPPP, including the site map, must be amended whenever there is a change in design, construction, operation, or maintenance at the construction site that has or could have a significant effect on the discharge of pollutants to Waters of the State that has not been previously addressed in the SWPPP. 2. If during inspections or investigations by site staff, or by local, state, or federal officials, it is determined that the SWPPP is ineffective at eliminating or significantly minimizing pollutants in storm water discharges from the construction site, the SWPPP must be amended. 3. Revisions to the SWPPP to improve ineffective controls must be completed within seven (7) calendar days following the inspection. See Part III.F.8.b regarding correcting or modifying temporary construction controls. L. Making Plans Available 1. A copy of the SWPPP, a copy of the CSW-NOI, and the letter from the NDEQ notifying the permittee of an approved CSW-NOI must be retained at the construction site or other locations easily accessible during normal business hours. The SWPPP must be made available upon request to federal, state, and local agencies, from the date of commencement of construction activities to the date of final stabilization. The SWPPP and corresponding documents may be posted online, but the construction site must have internet access. 2. A sign or other notice must be posted conspicuously near the entrance of the construction site. If displaying near the main entrance is infeasible, the notice can be posted in a local public building such as the town hall or public library. For linear projects, the sign or other notice must be posted at a publicly accessible location near the active part of a construction project (e.g. where a pipeline project crosses a public road). The sign or other notice must contain the following information: a. A copy of the completed CSW-NOI as submitted to the NDEQ; and b. A copy of the SWPPP, or, if the sign or notice does not contain a copy of the SWPPP, it must detail the name and telephone number of the contact person for obtaining access to the SWPPP, and the current location of the SWPPP. If the SWPPP is posted online, the sign must detail the website address, online location, or methodology to obtain the SWPPP.

Part IV. Special Conditions, Management Practices, Other Non-Numeric Limitations A. Requiring an Individual Permit or an Alternative General Permit 1. The NDEQ may require the permittee to apply for and/or obtain either an individual NPDES permit or an alternative NPDES general permit. Any interested party may petition the NDEQ to take action under this paragraph. If the NDEQ requires the permittee to apply for an individual NPDES permit, the NDEQ will notify the permittee in writing that a permit application is required. This notification will include a brief statement of the reasons for this decision and an application form. In addition, if the applicant is an existing permittee covered under this permit, the notice will set a deadline to file the application, and will include a statement that on the effective date of issuance or denial of the individual NPDES permit or the alternative general permit as it applies to the permittee, coverage under this general permit will automatically terminate. Applications must be submitted to the NDEQ. The NDEQ may grant additional time to submit the application upon request. If the permittee is covered under this permit and fail to submit in a timely manner an individual NPDES permit application as required by the NDEQ, then the applicability of this permit is automatically terminated at the end of the day specified by the NDEQ as the deadline for application for submittal. 2. The permittee may request to be excluded from the coverage of this general permit by applying for an individual permit. In such a case, the permittee must submit an individual application in accordance with the requirements of NDEQ Title 119, with reasons supporting the request to the NDEQ. The request may

Nebraska Construction Storm Water General Permit November 1, 2016 NPDES Permit No. NER160000 Page 13 of 24 be granted by issuance of an individual permit or an alternative general permit if the submitted reasons are adequate to support the request. 3. When an individual NPDES permit is issued to the permittee, who are otherwise subject to this permit, or are authorized to discharge under an alternative NPDES general permit, the applicability of this permit is automatically terminated on the effective date of the individual permit or the date of authorization of coverage under the alternative general permit, whichever the case may be. If the permittee, who is otherwise subject to this permit, is denied an individual NPDES permit or an alternative NPDES general permit, the applicability of this permit is automatically terminated on the date of such denial, unless otherwise specified by the NDEQ. B. Oil and Hazardous Substances/Spill Notification Hazardous substances or oil must be prevented from contaminating storm water runoff. The SWPPP must contain a plan to prevent spills, minimize quantity released during spills, contain spills, cleanup and dispose of wastes from spills. If the facility has a SCPP plan, the SPCC will qualify. This permit does not authorize the discharge of hazardous substances or oil from an onsite spill. The permittee shall conform to the provisions set forth in NDEQ Title 126, Rules and Regulations Pertaining to the Management of Wastes and federal reporting requirements of 40 CFR Part 110, 40 CFR Part 117, and 40 CFR Part 302 relating to spills or other releases of oil or hazardous substances. The permittee must notify the Department if the permittee knows, or has reason to believe, that a release containing a hazardous substance or oil in an amount equal to or in excess of a reportable quantity established under NDEQ Title 126, 40 CFR Part 110, 40 CFR Part 117, and 40 CFR Part 302. 1. The Permittee shall immediately notify the Department as soon as practicable of a reportable release of oil or hazardous substances. Notification shall be made to NDEQ at (402) 471-2186 or toll free (877) 253- 2603 year round day or night. 2. If the NDEQ does not answer or is unavailable, the permittee shall report to the Nebraska State Patrol at (402) 471-4545 year round day or night. It shall be the permittee’s responsibility to maintain current telephone numbers necessary to carry out the notification requirements set forth in this paragraph. 3. All information known about the release at the time of discovery is to be reported, such as contact information, time of occurrence, quantity and type of material, location and any corrective or cleanup actions undertaken or in process. 4. NDEQ requires a final written report for all reportable releases of oil or hazardous substances. When a final written report is required, it must be submitted to NDEQ within 15 days of remedial action, or, if no remedial action occurs, within 15 days of the release. A final report shall contain, at a minimum, the following information: a. Date, time and duration of the release; b. Location of release; c. Person or persons causing and responsible for the release; d. Type and amount of oil or hazardous substance released; e. Cause of the release; f. Environmental damage caused by the release; g. Actions taken to respond, contain and clean up the release; h. Location and method of ultimate disposal of the oil or hazardous substance and other contaminated materials; i. Actions being taken to prevent a reoccurrence of the release; j. Any known or anticipated acute or chronic health risks associated with the release; and k. When appropriate, advice regarding medical attention necessary for exposed individuals. 5. The permittee must complete corrective actions as required under Part III.J within seven (7) calendar days of knowledge of the release to prevent reoccurrence of such a release. C. Attainment of Water Quality Standards after Authorization 1. The permittee must select, install, implement, and maintain BMPs at the construction site that minimize pollutants in the discharge as necessary to meet applicable water quality standards. In general except in

Nebraska Construction Storm Water General Permit November 1, 2016 NPDES Permit No. NER160000 Page 14 of 24 situations explained in this section, the SWPPP developed, implemented, and updated consistent with Part III is considered as stringent as necessary to ensure that the discharges do not cause or contribute to an excursion above any applicable water quality standard. 2. At any time after authorization, NDEQ may determine that site storm water discharges may cause or have reasonable potential to cause or contribute to an excursion above any applicable water quality standard. The reasonable potential to cause or contribute to an excursion will be determined by the Department using TMDL information, receiving stream parameters, and the best professional judgment of the permitting authority. If such a determination is made, the NDEQ will require the permittee to: a. Develop a supplemental BMP action plan describing SWPPP modifications in accordance with Part III to address adequately the identified water quality concerns; b. Submit valid and verifiable data and information that are representative of ambient conditions and indicate that the receiving water is attaining water quality standards; or c. Cease discharges of pollutants from construction activity, and submit an individual permit application according to Part IV.A. 3. All written responses required under this part must include a signed certification from the certifying official. D. Discharges Affecting Endangered or Threatened Species This permit does not replace or satisfy any review requirements for endangered or threatened species from new or expanded discharges that adversely impact or contribute to adverse impacts on a listed endangered or threatened species or adversely modify a designated critical habitat. The owner must conduct any required review and coordinate with appropriate agencies for any project with the potential; of affecting threatened or endangered species, or their critical habitat. E. Discharged Affecting Historical Places or Archeological Sites This permit does not replace or satisfy any review requirements for historic places or archeological sites, from new or expanded discharges with adversely affect properties listed or eligible for listing in the National Register of Historic Places, or affecting known or discovered archeological sites. The owner must be in compliance with the National Historic Preservation Act and conduct all required review and coordination related to historic preservation, including significant anthropological sites and any burial sites, with the Nebraska Historic Preservation Officer. The permittee must comply with all applicable state and local laws concerning the protection of historic properties and places. The permittee’s discharge authorization under this permit is contingent upon compliance. F. Activities/Discharges Subject to other Applicable Regulations This permit does not replace or satisfy any other applicable regulatory requirements that the applicant/ permittee are subject to. The initiator of any controlled/regulated activity is the sole responsible party for obtaining authorization or permit coverage and for maintaining compliance with any applicable laws, regulations, or rules that may apply to permittee activities. G. Continuation of the Expired General Permit If this permit is not reissued or replaced prior to the expiration date, it will be administratively continued in accordance with the Administrative Procedure Act and remain in force and effect. If the permittee is granted permit coverage prior to the expiration date, the permittee will automatically remain covered by the continued permit until reissuance or replacement of this permit, at which time the permittee must comply with the conditions of Part II.C.2; or 1. Submit a Notice of Termination form; 2. Apply for coverage under an individual permit for the project’s discharges; or 3. If the NDEQ determines a general permit will not be reissued, the permittee must seek coverage under an alternative general permit or an individual permit.

Nebraska Construction Storm Water General Permit November 1, 2016 NPDES Permit No. NER160000 Page 15 of 24 Part V. Termination, Transfer, or Reassignment of Permit Coverage A. Notice of Termination Requirements The permittee may only submit a Notice of Termination (NOT) after one or more of the following conditions have been met: 1. Final stabilization has been achieved on all portions of the site for which the permittee is responsible; 2. Another operator has assumed control according to Part V.C over all areas of the site that have not been finally stabilized; 3. Coverage under an individual or alternative general NPDES permit has been obtained; or 4. For residential construction only, temporary erosion protection has been completed and the residence has been reassigned to the homeowner. The CSW-NOT must be submitted within 30 days of one of the above conditions being met. Authorization to discharge terminates according to the timeline and requirement of Part I.C.5 of this permit. The NOT form is available on the NDEQ website. B. Submitting a Notice of Termination It is the permittee’s responsibility to submit a complete and accurate notice of termination (CSW-NOT) form obtained on the NDEQ website. If the NDEQ notified dischargers (either directly by public notice, or by making information available on the internet) of other CSW-NOT form options, the permittee may take advantage of those options to satisfy the requirements of Part V. 1. After one of more of the notice of termination requirements in Part V.A has been met, the permittee must submit the following information to the NDEQ: a. The NPDES permit authorization number for the storm water discharge; b. The basis for submission of the CSW-NOT, including: final stabilization has been achieved for all portions of the site for which the permittee is responsible; another operator/permittee has assumed control over all areas of the site that have not been finally stabilized; coverage under an alternative NPDES permit has been obtained; or for residential construction only, temporary erosion protection has been completed and the residence has been transferred to the homeowner; c. The Owner’s assignment for responsibility of maintenance of the post-construction BMPs must be identified. d. The plans for training operators or maintenance staff of the post construction BMPs must be described. e. The certifying official’s legal name, address, email, and phone number; f. The name of the project address (or a description of location if no street address is available), and county of the construction site for which the notification is submitted; and g. A certification statement signed and dated by a certifying official.

C. Transfer of Permit When responsibility for storm water discharges at a construction site changes from one entity to another, the permittee shall complete a CSW Transfer on the NDEQ website that is signed in accordance with Part VI.D.6 of this permit. 1. The Construction Storm Water transfer (CSW-Transfer), includes: a. Permit certification number; b. Name, location, and county for the construction site for which the CSW-Transfer is being submitted; c. Identifying information for the new permittee; d. Identifying information for the current permittee; and e. Effective date of transfer. 2. Other Requirements of a Permit Transfer a. If the storm water discharge, associated with construction activity, is covered by this permit then the new owner(s) shall comply with all terms and conditions of this permit. b. A copy of any CSW permit authorizations (NOIs or NOTs) shall be included in the SWPPP.

Nebraska Construction Storm Water General Permit November 1, 2016 NPDES Permit No. NER160000 Page 16 of 24 c. A CSW-NOI shall be submitted to the NDEQ by the new owner(s). d. For construction activity which is part of a larger common plan of development, if the permittee transfers ownership of all or any part of property subject to this permit, both the permittee and transferee shall be responsible for compliance with this permit for that portion of the project which has been transferred including when transferred property is less than one (1) acre in area. e. If the new owner(s) agree in writing to be solely responsible for compliance with this permit for the property that has been transferred, then the existing permittee(s) authorization shall be terminated. Part VI. Standard Conditions and Requirements These general conditions shall not preempt any more stringent requirements found elsewhere in this permit. A. Other Conditions 1. Narrative limits Discharges authorized under this permit: a. Shall not be toxic to aquatic life in surface Waters of the State; b. Shall not contain pollutants at concentrations or levels that produce objectionable films, colors, turbidity, deposits, or noxious odors in the receiving stream or waterway; and c. Shall not contain pollutants at concentrations or levels that cause the occurrence of undesirable or nuisance aquatic life in the receiving stream. 2. Inspection and Entry The permittee shall allow the Director or their appointed representative, upon the presentation of his or her identification and at a reasonable time: a. To enter upon a permittee’s premises where regulated construction activity is located or conducted, or records are required to be kept under the terms and conditions of this permit; b. To have access to and copy any records required to be kept under the terms and conditions of this permit; c. To inspect any facilities, equipment (including monitoring and control), practices or operations regulated or required in this permit; and d. To sample or monitor any substances or parameters at any location. 3. Changes in Discharge Any revision in the size of construction activity (such as the addition of disturbed acres not previously identified under the original CSW-NOI form), which will result in new or substantially increased discharges of pollutants or a change in the nature of the discharge of pollutants must be reported by the permittee seven (7) calendar days prior to the expansion, increases of modifications by submitting a modification of the original form CSW-NOI or by submitting a new form CSW-NOI. Permit authorization may be modified or revoked and reissued as a result of this notification to maintain compliance with applicable state or federal regulations.

B. Procedures for Modification or Revocation Permit modification or revocation will be conducted according to Title 119, Chapter 24. If there is evidence indicating that the storm water discharges authorized by this permit cause, have the reasonable potential to cause, or contribute to an excursion above any applicable water quality standard, you may be required to obtain an individual permit in accordance with Part IV.A of this permit, or the permit may be modified to include different limitations and /or requirements.

C. Timing of Permit Modification The NDEQ may elect to modify the permit prior to its expiration (rather than waiting for the new permit cycle) to comply with any new statutory or regulatory requirements, such as for effluent limitation guidelines, which may be promulgated in the course of the current permit cycle.

Nebraska Construction Storm Water General Permit November 1, 2016 NPDES Permit No. NER160000 Page 17 of 24 D. Management Requirements 1. Duty to Comply All authorized discharges shall be consistent with the terms and conditions of this permit. The permittee shall comply with all conditions of this permit. Failure to comply with these conditions may be grounds for administrative action or enforcement proceedings including injunctive relief and civil or criminal penalties. The filing of a request by the permittee for a permit modification, revocation and re-issuance, termination or a notification of planned changes or anticipated noncompliance does not stay any permit condition. 2. Duty to Mitigate The permittee shall take all reasonable steps to minimize, prevent, or correct any adverse impact to the environment resulting from noncompliance with this permit, including accelerated or additional monitoring as required by the NDEQ to determine the nature and impact of the noncompliant discharge. 3. Duty to Provide Information The permittee shall furnish to the Department within seven (7) calendar days, any information which the Department may request to determine whether cause exists for modifying, revoking and reissuing, or terminating permit coverage; or to determine compliance with this permit. The permittee shall also furnish to the Department upon request, copies of records retained as a requirement of this permit. 4. Reporting Requirements The permittee shall be responsible for reporting any instance of noncompliance with the terms and conditions of this permit in accordance with NDEQ Title 119, Chapter 14. In most instances, initial notification shall be made as soon as the permittee becomes aware of noncompliance. A written follow- up shall be submitted within five (5) days of reporting noncompliance. The submittal of a written noncompliance report does not relieve the permittee of any liability from enforcement proceedings that may result from the violation of permit or regulatory requirements. The written notice shall include, at a minimum: a. A description of the discharge and cause of noncompliance; b. The period of noncompliance, including exact date and times, or if not corrected, the anticipated time the noncompliance is expected to continue; and c. The steps taken to reduce, eliminate, and prevent the reoccurrence of noncompliance. 5. Proper Operation and Maintenance The permittee shall, at all times, maintain in good working order and operate as efficiently as possible, any facilities or systems of control installed by the permittee in order to achieve compliance with the terms and conditions of this permit. This would include, but not be limited to, effective performance based on designed facility removals, effective management, adequate operator staffing and training, adequate laboratory and process controls, and adequate funding that reflects proper user fee schedules. 6. Signatory Requirements All reports and applications required by this permit or submitted to maintain compliance with this permit shall be signed and certified as set forth in this section. a. Permit applications shall be signed by a certifying official that meets the following criteria: 1) For a corporation: a responsible corporate officer; 2) For a partnership or sole proprietorship: by a general partner or by the proprietor, respectively; or 3) For a municipality, state, federal or other public facility: by either a principal executive officer or ranking elected official, chief executive officer of the agency, or senior executive officer having responsibility for the overall operations of a principal geographic unit of the agency. b. The discharge monitoring reports (DMRs) and other information may be signed by the certifying official. c. The certifying official may be designated as or may designate an authorized representative. The authorized representative is responsible for the overall implementation of the SWPPP (i.e., the general contractor).

Nebraska Construction Storm Water General Permit November 1, 2016 NPDES Permit No. NER160000 Page 18 of 24 d. Any change in the signatories shall be submitted to the Department, in writing, within seven (7) days after the change, but no later than with the submission of information required by the Department to be submitted while the new signatory has taken responsibility. e. All applications, reports, and information submitted as a requirement of this permit, shall contain the following certification statement:

“I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information including the possibility of fines and imprisonment for knowing violations.”

E. Monitoring and Records Requirements 1. Monitoring Routine periodic monitoring of storm water discharges is not required unless requested by the Department. Monitoring may be required by the Department for any of the following reasons: a. The identification of potential groundwater and/or surface water quality impacts to which the permittee may be contributing; b. The failure by the permittee to implement pollution prevention or pollution control procedures set forth in the SWPPP; c. The recognition of potential pollutant sources during site inspections or investigations; and/or d. To obtain information for watershed basin or industry group studies. 2. Retention of Records The permittee shall retain records of all monitoring activities for a period of at least three (3) years as set forth in NDEQ Title 119, Chapter 14 001.02. The types of records that must be retained include, but are not limited to: a. Calibration and maintenance records; b. Original strip chart recordings; c. Copies of all reports required by this permit; d. Monitoring records and information; and e. Electronically readable data. 3. Record Contents As set forth in NDEQ Title 119, Chapter 14, records of sampling or monitoring information shall include: a. The date(s), exact place, time, and methods of sampling or measurements; b. The name(s) of the individual(s) who performed the sampling or measurements; c. The date(s) the analyses were performed; d. The individual(s) who performed the analyses; e. The analytical techniques or methods used; f. The results of such analyses; and g. Laboratory data, bench sheets, and other required information.

F. General Requirements 1. Permit Attachments The attachments to this permit (e.g., forms and guidance) may be modified without a formal modification to the permit. 2. Information Available All permit applications, fact sheets, discharge data, monitoring reports, and any public comments concerning such shall be available to the public for inspection and copying, unless such information about methods or processes is entitled to protect as trade secrets of the owner and operator under Neb. Rev. Stat. §81-1527, (Cum. Supp. 1992) and NDEQ Title 115, Chapter 4.

Nebraska Construction Storm Water General Permit November 1, 2016 NPDES Permit No. NER160000 Page 19 of 24 3. Permit Actions This permit may be modified, suspended, revoked or reissued, in part of in whole, in accordance with the regulations set forth in NDEQ Title 119, Chapter 24. In addition, this permit may be modified, revoked, and reissued to incorporate standards or limitations issued pursuant to Sections 301(b)(b)(c), 301(b)(b)(d), 304(b)(b), 306(a)(b), or 405(d) of the Clean Water Act and Public Law 100-4. 4. Property Rights Coverage under this permit does not convey any property rights of any sort or any exclusive privileges nor does it authorize any damage to private property or any invasion of personal rights nor any infringement of federal, state, or local laws or regulations. 5. Severability If any provision of this permit is held invalid, the remainder of this permit shall not be affected. 6. Other Rules and Regulations Liability The issuance of this permit in no way relieves the obligation of the permittee to comply with other rules and regulations of the Department. 7. Penalties Nothing in this permit shall preclude the initiation of any legal action or relieve the permittee from any responsibilities, liabilities, or penalties under Section 311 of the Clean Water Act. Violations of the terms and conditions of this permit may result in the initiation of criminal and/or civil actions. Civil penalties can result in fines of up to $10,000.00 per day (Neb. Rev. Stat. §81-1508, as amended to date). Criminal penalties for willful or negligent violations of this permit may result in penalties of $10,000.00 per day or by imprisonment. Violations may also result in federal prosecution. 8. Electronic Reporting The National Pollutant Discharge Elimination System (NPDES) Electronic Reporting Rule requires electronic reporting of NPDES information rather than the currently required paper based reports from the permitted facilities. To comply with the federal rule, permittees will be required to submit NOIs, CSW- Transfers, and NOTs electronically on the NDEQ website. Part VII. Definitions Authorized Representative: Individual or position designated the certifying official to submit reports, notifications, or other information requested by the Director on behalf of the owner under the circumstances that the authorization is made in writing by the owner, the authorization specifies the individual or position that is duly authorized, and the authorization is submitted by the Director. Best Management Practices (BMPs): Erosion and sediment control and water quality management practices that are the most effective and practicable means of controlling, preventing, and minimizing degradation of surface water, including avoidance of impacts, construction-phasing, minimizing the length of time soil areas are exposed, prohibitions, and other management practices published by state of designated area- wide planning agencies. Buffer: A 50 ft. buffer is required between construction activity and Waters of the United States. If the 50 ft. buffer is infeasible, then BMPs must achieve equivalent storm water treatment to the 50 ft. buffer. Certifying Official: · For a corporation, by a reasonable corporate office, which means: - A president, secretary, treasurer, or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy or decision making functions for the corporation, or - The manager of one or more manufacturing, production, or operating facilities, provided the manager is authorized to make management decisions which govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long-term environmental compliance with environmental laws and regulations; the

Nebraska Construction Storm Water General Permit November 1, 2016 NPDES Permit No. NER160000 Page 20 of 24 manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for permit application requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures. · For a partnership or sole proprietorship: By a general partner or proprietor respectively · For a municipality, state, federal, or other public agency: - By either a principal executive officer of the agency, or - A senior executive officer having responsibility for the operations of a principal geographic unit of the agency Combined Sewer System (CSO): Defined as a collection system that collects both storm water and sanitary wastewater with outfalls directly discharging into Waters of the State. Common Plan of Development or Sale: A contiguous area where multiple separate and distinct land disturbing activities may be taking place at different times, on different schedules, but under one proposed plan. One plan is broadly defined to include design, permit application, advertisement, or physical demarcation indicating that land-disturbing activities may occur. Construction Activity: Includes large construction activity and small construction activity. This includes a disturbance to the land that results in a change in the topography, existing soil cover (both vegetative and non-vegetative), or the existing soil topography that may result in accelerated storm water runoff, leading to soil erosion and movement of sediment into waters of the stare or urban drainage systems. Construction activity includes the disturbance of less than one (1) acre of total land area that is part of a larger common plan of development or sale if the larger common plan will ultimately disturb one (1) acre or more and includes all areas of support activity. Coverage: A permittee status of compliant operation under the terms and conditions of this general permit once a discharge authorization number has been obtained until that authorization is terminated. Department: The Nebraska Department of Environmental Quality. Dependent: Construction activity with direct relation to the stream such as bank stabilization, bridge construction activity, culvert construction, if the permittee is required to have a US Army Corps of Engineers 404 permit, etc. Director: The Director of the Nebraska Department of Environmental Quality. Discharge Authorization Number: A specific authorization number (NER 1xx xxx) issued to a specific permittee that meets the application requirements for coverage under this general permit. Erosion Prevention: Measures employed to prevent sediment from moving from its existing location including but not limits to: soil stabilization practices, limited grading, mulch, temporary or permanent cover, and construction phasing. Final Stabilization: Condition where all soil disturbing activities at the site have been completed and a uniform perennial vegetative cover with a minimum density of 70 percent of the native background vegetative cover has been established on all non-impervious surfaces and areas not covered by permanent structures unless equivalent permanent stabilization measures have been employed (e.g., riprap, gabions, or geotextiles). Impervious Surface: A constructed hard surface that either prevents or retards the entry of water into the soil and caused water flow off the surface in greater quantities and at an increased rate of flow than prior to development (e.g., streets, sidewalks, parking lots, roofs, and in some cases highly compacted soil). Infeasible: No technologically possible, or not economically practicable and achievable in light of best industry practices. Large Construction Activity: This activity is the clearing, grading, and excavating resulting in a land disturbance that will disturb equal to or greater than five (5) acres of land or will disturb less than five (5) acres of total land area but is part of a larger common plan of development or sale that will ultimately disturb equal to or greater than five (5) acres. Large construction activity does not include routine

Nebraska Construction Storm Water General Permit November 1, 2016 NPDES Permit No. NER160000 Page 21 of 24 maintenance that is performed to maintain the original line and grade, hydraulic captivity, or original purpose of the site. Municipal Separate Storm Sewer System (MS4): A separate storm water sewer system in urbanized cities and counties as having populations of 10,000 or greater as determined by the Bureau of Census 2010 Decennial Census. National Pollutant Discharge Elimination System (NPDES): Program for issuing, modifying, revoking, reissuing, terminating, monitoring, and enforcing permits under the Clean Water Act (Sections 301, 318, 402, and 405) and CFR Title 33, Sections 1317, 1328, 1342, and 1345. New Source: Any source, whose discharges are defined in 40 CFR 122.26(b)(14)(x) and (b)(15), that commences construction activity after the effective date of December 1, 2009. Notice of Termination (CSW-NOT): Note to terminate coverage under this permit after construction is completed, the site has undergone final stabilization, and maintenance agreements for all permanent facilities gave been established, in accordance with all applicable conditions of this permit. Operator: Person (often the general contractor) designated by the owner, who has day-to-day operational control and/or the ability to modify project plants and specifications related to the SWPPP. The person shall be knowledgeable in those areas of the permit for which the operator is responsible. Outfall: A discernible, confined, and discrete conveyance, including but not limited to any pipe, ditch, channel, tunnel, conduit, well, discrete fissure, or container from which pollutants from construction activity are or may be discharged to waters of the state. Owner: Person or party possessing the title of the land on which the construction activities will occur; or if the construction activity is for a lease holder, the party or individual as the lease holder; or the contacting government agency responsible for the construction activity. Permittee: Person(s), firm, or governmental agency or other institution that signs the application submitted to the Department and is responsible for compliance with the terms and condition of this permit. Qualified Personnel: A person knowledgeable in the principles and practice of erosion and sediment controls that possesses the skills to implement and assess the effectiveness of any erosion and sediment control measures. The qualified personnel must possess the skills to assess conditions at the construction site that could impact storm water quality, and possess the skills to assess the effectiveness of any storm water controls selected and installed to meet the requirements of this permit. Receiving Waters: A general term used to describe all waters of the state. Responsible Corporate Officer: The owner or operator meeting either of the following conditions: A president, secretary, treasurer, or vice president of the corporation in charge of a principal business function, or any other person who performs similar policy or decision-making functions for the corporation, or the manager of one of more manufacturing, production, or operating facilities. Provided, the manager is authorized to make management decisions which govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long term environmental compliance with environmental law and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for permit application requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures. Sediment Control: Methods employed to prevent sediment from leaving the construction site after it has eroded from its existing location. Sediment control practices include silt fences, sediment traps, earth dikes, drainage swales, check dams, subsurface drains, pipe slope drains, storm drain inlet protection, and temporary or permanent sedimentation basins. Silvicultural Discharges: “Silvicultural point source” means any discernible, confined, and discrete conveyance related to rock crushing, gravel washing, log sorting, or log storage facilities which are operated in connection with silvicultural activities and from which pollutants are discharges into waters of the state. The term does not include nonpoint source silvicultural activities such as nursery operations, site preparation, reforestation and subsequent cultural treatment, thinning, prescribed burning, pest and

Nebraska Construction Storm Water General Permit November 1, 2016 NPDES Permit No. NER160000 Page 22 of 24 fire control, harvesting operations, surface drainage, and road construction and maintenance from which there is natural runoff during precipitation events. Small Construction Activity: This activity is the clearing, grading, and excavation that result in land disturbance of equal to or greater than one (1) acre and less than five (5) acres including disturbance of less than one acre of total land area that is part of a larger common plan of development of sale if the larger common plan will ultimately disturb equal to or greater than one (1) and less than five (5) acres. Small construction activity does not include routine maintenance that is preformed to maintain the original line and grade, hydraulic capacity, or original purpose of the facility. Spill Prevention Control and Countermeasure Plan (SPCC): Federal regulation set forth in 40 CFR Part 112.1 requiring a SPCC plan to be developed for temporary or permanent facilities that store oil in vessels that have following storage capacity: · A single above ground oil storage with 660 gallons or more capacity. · Two or more above ground storage vessels with an aggregate of 1320 gallons or more capacity. - Include storage vessels stored above ground with a capacity of 55 gallons or more with the aggregate total capacity. · Below ground oil storage vessels of 42,000 gallons or more. For the SPCC, oil refers to any kind or in any form including, but not limited to, petroleum, fuel oil, sludge, oil refuse and oil mixed with wastes. Stabilized: Exposed ground surface has been covered by appropriate materials such as mulch, staked sod, riprap, wood fiber blanket, established grass bed, or other material that prevents erosion from occurring. Steep Slope: Generally any slope greater than 15° or has significant potential for erosion. Storm Water: Storm water runoff, snow melt runoff, and surface runoff and drainage. Storm Water Pollution Prevention Plan (SWPPP): A plan for storm water discharge that includes erosion prevention measures and sediment controls that, when implemented, will decrease soil erosion on a parcel of land and decrease offsite, non-point source pollution. Support Activity: Associated construction activity that is directly related to the construction site (such as disposal areas or borrow areas) required to have NPDES permit coverage for discharges of storm water that may be located on site or in a remote location, but is not a commercial operation serving multiple unrelated construction projects by different operators nor operates beyond the completion of the construction activity at the last construction project it supports. Temporary Erosion Protection: Methods employed to temporarily prevent erosion during the construction sequence or while final stabilization is being established. Examples of temporary erosion protection include: straw, mulch, wood chips, and erosion netting. Total Maximum Daily Load (TMDL): The sum of the individual wasteload allocations (WLAs) for point sources and load (load allocations) for nonpoint sources and natural background levels for a specific pollutant. The Department establishes TMDLs that are expressed in terms of either mass per unit of time, relative level of toxicity, or other appropriate measure. Toxic Pollutant: Pollutants or combination of pollutants, including disease-causing agents, after discharge and upon exposure, ingestion, inhalation, or assimilation into an organism, either directly from the environment or indirectly by ingestion through food chains will, on the basis of information available to the Department, cause death, disease, behavioral abnormalities, cancer, genetic mutations, physiological malfunction (including malfunctions in reproduction) or physical deformations, in such organisms or their offspring. Waters of the State: All waters within the jurisdiction of this state including all streams, lakes, ponds, impounding reservoirs, marshes, wetlands, watercourses, waterways, wells, springs, irrigation systems, drainage systems, and all other bodies or accumulations of water, surface and underground, natural or artificial, public or private, situated wholly or partly within or bordering upon the state.

Nebraska Construction Storm Water General Permit November 1, 2016 NPDES Permit No. NER160000 Page 23 of 24 Reference List A: Abbreviations BMP: Best Management Practice(s) CFR: Code of Federal Regulations CSO: Combined Sewer Overflow CSW: Construction Storm Water CSW-NOI: Notice of Intent CSW-NOT: Notice of Termination NDEQ: Nebraska Department of Environmental Quality NDEQ Title 115: NDEQ Title 115 – Rules of Practice and Procedure NDEQ Title 117: NDEQ Title 117 – Nebraska Surface Water Quality Standards NDEQ Title 118: NDEQ Title 118 – Ground Water Quality Standards and Use Classification NDEQ Title 119: NDEQ Title 119 – Rules and Regulations Pertaining to the Issuance of Permits under the National Pollutant Discharge Elimination System NDEQ Title 126: NDEQ Title 126 – Rules and Regulations Pertaining to the Management of Wastes NDEQ Title 132: NDEQ Title 132 – Integrated Solid Waste Management Regulations SPCC: Spill Prevention, Control, and Countermeasures SWPPP: Storm Water Pollution Prevention Plan TMDL: Total Maximum Daily Load

Nebraska Construction Storm Water General Permit November 1, 2016 NPDES Permit No. NER160000 Page 24 of 24 Table of Contents for Appendix A Standard Conditions that Apply to NPDES Permits

Section Page

1. Information Available ...... 1 2. Duty to Comply ...... 1 3. Violations of this Permit ...... 1 4. Duty to Reapply ...... 1 5. Need to Halt or Reduce Activity not a Defense ...... 1 6. Duty to Mitigate ...... 1 7. Proper Operation and Maintenance ...... 1 8. Permit Actions ...... 2 9. Property Rights ...... 2 10. Duty to Provide Information ...... 2 11. Inspection and Entry ...... 2 12. Monitoring and Records ...... 2 13. Signatory Requirement ...... 3 14. Reporting Requirements ...... 4 15. Bypass ...... 6 16. Upset ...... 7 17. Other Rules and Regulations Liability ...... 8 18. Severability ...... 8 19. Other Conditions that Apply to NPDES and NPP Permits...... 8 20. Definitions ...... 10 21. Abbreviations ...... 12

Appendix A Conditions Applicable to all NPDES Permits The following conditions apply to all NPDES permits:

1. Information Available All permit applications, fact sheets, permits, discharge data, monitoring reports, and any public comments concerning such shall be available to the public for inspection and copying, unless such information about methods or processes is entitled to protection as trade secrets of the owner or operator under Neb. Rev. Stat. §81-1527, (Reissue 1999) and NDEQ Title 115, Chapter 4.

2. Duty to Comply a. The permittee must comply with all conditions of this permit. Any permit noncompliance constitutes a violation of the Federal Clean Water Act and the Applicable State Statutes and Regulations and is grounds for enforcement action; for permit termination, revocation and reissuance, or modification; or denial of a permit renewal application. b. The permittee shall comply with effluent standards or prohibitions established under section 307(a) of the Clean Water Act for toxic pollutants and with standards for sewage sludge use or disposal established under section 405(d) of the CWA within the time provided in the regulations that establish these standards or prohibitions or standards for sewage sludge use or disposal, even if the permit has not yet been modified to incorporate the requirement. 3. Violations of this Permit a. Any person who violates this permit may be subject to penalties and sanctions as provided by the Clean Water Act. b. Any person who violates this permit may be subject to penalties and sanctions as provided by the Nebraska Environmental Protection Act. 4. Duty to Reapply If the permittee wishes to continue an activity regulated by this permit after the expiration date of this permit, the permittee must apply for and obtain a new permit.

5. Need to Halt or Reduce Activity not a Defense It shall not be a defense for a permittee in an enforcement action that it would have been necessary to halt or reduce the permitted activity in order to maintain compliance with the conditions of this permit.

6. Duty to Mitigate The permittee shall take all reasonable steps to minimize or prevent any discharge or sludge use or disposal in violation of this permit which has a reasonable likelihood of adversely affecting human health or the environment.

7. Proper Operation and Maintenance The permittee shall at all times properly operate and maintain all facilities and systems of treatment and control (and related appurtenances) which are installed or used by the permittee to achieve compliance with the conditions of this permit. Proper operation and maintenance also includes effective performance based on designed facility removals, effective management, adequate operator staffing and training, adequate process controls, adequate funding that reflects proper user fee schedules, adequate laboratory controls and appropriate quality assurance procedures. This provision requires the operation of back-up or auxiliary

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facilities or similar systems which are installed by a permittee only when the operation is necessary to achieve compliance with the conditions of this permit.

8. Permit Actions This permit may be modified, revoked and reissued, or terminated for cause. The filing of a request by the permittee for a permit modification, revocation and reissuance, or termination, or a notification of planned changes or anticipated noncompliance does not stay any permit condition.

9. Property Rights This permit does not convey any property rights of any sort, or any exclusive privilege.

10. Duty to Provide Information The permittee shall furnish to the Director, within a reasonable time, any information which the Director may request to determine whether cause exists for modifying, revoking and reissuing, or terminating this permit or to determine compliance with this permit. The permittee shall also furnish to the Director upon request, copies of records required to be kept by this permit.

11. Inspection and Entry The permittee shall allow the Director, or an authorized representative (including an authorized contractor acting as a representative of the Administrator), upon presentation of credentials and other documents as may be required by law, to:

a. Enter upon the permittee's premises where a regulated facility or activity is located or conducted, or where records must be kept under the conditions of this permit; b. Have access to and copy, at reasonable times, any records that must be kept under the conditions of this permit; c. Inspect at reasonable times any facilities, equipment (including monitoring and control equipment), practices, or operations regulated or required under this permit; and d. Sample or monitor at reasonable times, for the purposes of assuring permit compliance or as otherwise authorized by the Clean Water Act, any substances or parameters at any location. 12. Monitoring and Records a. Samples and measurements taken for the purpose of monitoring shall be representative of the monitored activity. b. Except for records of monitoring information required by this permit related to the permittee's sewage sludge use and disposal activities, which shall be retained for a period of at least five years (or longer as required by 40 CFR Part 503), the permittee shall retain records of all monitoring information, including all calibration and maintenance records and all original strip chart recordings for continuous monitoring instrumentation, copies of all reports required by this permit, and records of all data used to complete the application for this permit, for a period of at least 3 years from the date of the sample, measurement, report or application. This period may be extended by request of the Director at any time. c. Records of monitoring information shall include: i) The date(s), exact place, time and methods of sampling or measurements; ii) The individual(s) who performed the sampling or measurements; iii) The date(s) analyses were performed; iv) The individual(s) who performed the analyses; v) The analytical techniques or methods used; and Page 2 of 12

vi) The results of such analyses. d. Monitoring must be conducted according to test procedures approved under NDEQ Title 119, Chapter 27 002 unless another method is required under 40 CFR Subchapters N – Effluent Guidelines and Standards Parts 425 to 471 or O – Sewer Sludge Parts 501 and 503. e. Falsifies, Tampers, or Knowingly Renders Inaccurate i) On actions brought by EPA, the Clean Water Act provides that any person who falsifies, tampers with, or knowingly renders inaccurate any monitoring device or method required to be maintained under this permit shall, upon conviction: be punished by a fine of not more than $10,000, or by imprisonment for not more than 2 years, or both. If a conviction of a person is for a violation committed after a first conviction of such person under this paragraph, punishment is a fine of not more than $20,000 per day of violation, or by imprisonment of not more than 4 years, or both. ii) On action brought by the State, The Nebraska Environmental Protection Act provides that any person who falsifies, tampers with, or knowingly renders inaccurate any monitoring device or method required to be maintained under this permit shall, upon conviction, be punished pursuant to Neb. Stat. §81-1508.01. 13. Signatory requirements a. All applications, reports, or information submitted to the Director shall be signed and certified. i) All permit applications shall be signed as follows: (a) For a corporation (i) By a responsible corporate officer: For the purpose of this section, a responsible corporate officer means: (a) A president, secretary, treasurer, or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy or decision- making functions for the corporation, or (b) The manager of one or more manufacturing, production, or operating facilities, provided, the manager is authorized to make management decisions which govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long term environmental compliance with environmental laws and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for permit application requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures. (b) For a partnership or sole proprietorship (i) By a general partner or the proprietor. (c) For a municipality, State, Federal, or other public agency (i) By either a principal executive officer or ranking elected official. For purposes of this section, a principal executive officer of a Federal agency includes: (a) The chief executive officer of the agency, or (b) A senior executive officer having responsibility for the overall operations of a principal geographic unit of the agency (e.g., Regional Administrators of EPA). b. Reports and Other Information i) All reports required by permits, and other information requested by the Director shall be signed by a person described in this section [paragraphs13. a. i) (a),(b), or (c)], or by a duly authorized representative of that person. A person is a duly authorized representative only if: Page 3 of 12

(a) The authorization is made in writing by a person described in paragraphs 13. a. i) (a),(b), or (c); (b) The authorization specifies either an individual or a position having responsibility for the overall operation of the regulated facility or activity such as the position of plant manager, operator of a well or a well field, superintendent, position of equivalent responsibility, or an individual or position having overall responsibility for environmental matters for the company, (a duly authorized representative may thus be either a named individual or any individual occupying a named position) and; (c) The written authorization is submitted to the Director. c. Changes to Authorization If an authorization of paragraphs 13. a. i) (a),(b), or (c) is no longer accurate because a different individual or position has responsibility for the overall operation of the facility, a new authorization satisfying the requirements of this section must be submitted to the Director prior to or together with any reports, information, or applications to be signed by an authorized representative. d. Certification All applications, reports and information submitted as a requirement of this permit shall contain the following certification statement: i) I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. e. False Statement, Representation, or Certification i) The CWA provides that any person who knowingly makes any false statement, representation, or certification in any record or other document submitted or required to be maintained under this permit, including monitoring reports or reports of compliance or noncompliance shall, upon conviction, be punished by a fine of not more than $10,000 per violation, or by imprisonment for not more than 6 months per violation, or by both. ii) The Nebraska Environmental Protection Act provides criminal penalties and sanctions for false statement, representation, or certification in any application, label, manifest, record, report, plan, or other document required to be filed or maintained by the Environmental Protection Act, the Integrated Solid Waste Management Act, the Livestock Waste Management Act or the rules or regulations adopted and promulgated pursuant to such acts. 14. Reporting Requirements a. Planned Changes i) The permittee shall give notice to the Director as soon as possible of any planned physical alterations or additions to the permitted facility. Notice is required only when: (a) The alteration or addition to a permitted facility may meet one of the criteria for determining whether a facility is a new source in NDEQ Title 119, Chapter 4 and 8. (b) The alteration or addition could significantly change the nature or increase the quantity of pollutants discharged. This notification applies to pollutants which are subject neither to effluent limitations in the permit, nor to notification requirements under NDEQ Title 119, Chapter 15. (c) The alteration or addition results in a significant change in the permittee's sludge use or disposal practices, and such alteration, addition, or change may justify the application of permit conditions Page 4 of 12

that are different from or absent in the existing permit, including notification of additional use or disposal sites not reported during the permit application process or not reported pursuant to an approved land application plan. The sludge program is not delegated to the State so notification to the EPA Regional Administrator in addition to the State is required. b. Anticipated Noncompliance The permittee shall give advance notice to the Director of any planned changes in the permitted facility or activity which may result in noncompliance with permit requirements. c. Transfers This permit is not transferable to any person except after notice to the Director. The Director may require modification or revocation and reissuance of the permit to change the name of the permittee and incorporate such other requirements as may be necessary under NDEQ Title 119, Chapter 24 in some cases, modification or revocation and reissuance is mandatory. d. Monitoring Reports i) Monitoring results shall be reported at the intervals specified elsewhere in this permit. ii) Monitoring results must be reported on a Discharge Monitoring Report (DMR) or forms provided or specified by the Director. iii) Monitoring results shall be submitted on a quarterly basis using the reporting schedule set forth below, unless otherwise specified in this permit or by the Department. Monitoring Quarters DMR Reporting Deadlines January - March April 28 April - June July 28 July - September October 28 October - December January 28 iv) For reporting results of monitoring of sludge use or disposal practices v) Additional reports may be required by the EPA Regional Administrator. vi) If the permittee monitors any pollutant more frequently than required by the permit using test procedures approved in NDEQ Title 119, Chapter 27 002, or another method required for an industry- specific waste stream under 40 CFR Subchapters N – Effluent Guidelines and Standards Parts 425 to 471 and O – Sewer Sludge Parts 501 and 503, the results of such monitoring shall be included in the calculation and reporting of the data submitted in the DMR or sludge reporting form specified by the Director or EPA Regional Administrator. vii) Calculations for all limitations which require averaging of measurements shall utilize an arithmetic mean unless otherwise specified by the Director in the permit. e. Compliance Schedules Reports of compliance or noncompliance with, or any progress reports on, interim and final requirements contained in any compliance schedule of this permit shall be submitted no later than 14 days following each schedule date. f. Twenty-four Hour Reporting i) The permittee shall report any noncompliance which may endanger human health or the environment. Any information shall be provided orally within 24 hours from the time the permittee becomes aware of the circumstances. A written submission shall also be provided within 5 days of the time the permittee becomes aware of the circumstances. The written submission shall contain a description of the noncompliance and its cause; the period of noncompliance, including exact dates and times, and if the noncompliance has not been corrected, the anticipated time it is expected to continue; and steps taken or planned to reduce, eliminate, and prevent reoccurrence of the noncompliance. Page 5 of 12

ii) The following shall be included as information which must be reported within 24 hours under this paragraph. (a) Any unanticipated bypass which exceeds any effluent limitation in this permit. (b) Any upset which exceeds any effluent limitation in this permit. (c) Violation of a maximum daily discharge limitation for any of the pollutants listed by the Director in the permit to be reported within 24 hours. g. The Director may waive the written report on a case-by-case basis for reports under section 14. f. ii) (a), (b) and (c) if the oral report has been received within 24 hours. h. Other noncompliance The permittee shall report all instances of noncompliance not reported under paragraphs d., e., and f. of this section, at the time monitoring reports are submitted. The reports shall contain the information listed in paragraph f. of this section. i. Other information Where the permittee becomes aware that it failed to submit any relevant facts in a permit application, or submitted incorrect information in a permit application or in any report to the Director, it shall promptly submit such facts or information. j. Noncompliance Report Forms i) Noncompliance Report Forms are available from the Department and shall be submitted with or as the written noncompliance report. ii) The submittal of a written noncompliance report does not relieve the permittee of any liability from enforcement proceedings that may result from the violation of permit or regulatory requirements. 15. Bypass a. Definitions i) Bypass means the intentional diversion of waste streams from any portion of a treatment facility. ii) Severe property damage means substantial physical damage to property, damage to the treatment facilities which causes them to become inoperable, or substantial and permanent loss of natural resources which can reasonably be expected to occur in the absence of a bypass. Severe property damage does not mean economic loss caused by delays in production. b. Bypass Not Exceeding Limitations The permittee may allow any bypass to occur which does not cause effluent limitations to be exceeded, but only if it also is for essential maintenance to assure efficient operation. These bypasses are not subject to the provisions of paragraphs 15.c. and d. of this section. c. Notice i) Anticipated Bypass If the permittee knows in advance of the need for a bypass, it shall submit prior notice, if possible at least ten days before the date of the bypass. ii) Unanticipated Bypass The permittee shall submit notice of an unanticipated bypass as required in paragraph 14.f. of this section (24-hour notice). d. Prohibition of Bypass Bypass is prohibited, and the Director may take enforcement action against a permittee for bypass, unless:

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i) Bypass was unavoidable to prevent loss of life, personal injury, or severe property damage; ii) There were no feasible alternatives to the bypass, such as the use of auxiliary treatment facilities, retention of untreated wastes, or maintenance during normal periods of equipment downtime. This condition is not satisfied if adequate back-up equipment should have been installed in the exercise of reasonable engineering judgment to prevent a bypass which occurred during normal periods of equipment downtime or preventive maintenance; and iii) The permittee submitted notices as required under paragraph 15.c. of this section. e. The Director may approve an anticipated bypass, after considering its adverse effects, if the Director determines that it will meet the three conditions listed above in paragraph 15.d. 16. Upset a. Definition Upset means an exceptional incident in which there is unintentional and temporary noncompliance with technology based permit effluent limitations because of factors beyond the reasonable control of the permittee. An upset does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive maintenance, or careless or improper operation. b. Effect of an Upset An upset constitutes an affirmative defense to an action brought for noncompliance with such technology based permit effluent limitations if the requirements of paragraph 16.c. of this section are met. No determination made during administrative review of claims that noncompliance was caused by upset, and before an action for noncompliance, is final administrative action subject to judicial review. c. Conditions Necessary for a Demonstration of Upset. A permittee who wishes to establish the affirmative defense of upset shall demonstrate, through properly signed, contemporaneous operating logs, or other relevant evidence that: i) An upset occurred and that the permittee can identify the cause(s) of the upset; ii) The permitted facility was at the time being properly operated; iii) The permittee submitted notice of the upset as required in paragraph 14.f. ii) (a), of this section (24- hour notice). iv) The permittee complied with any remedial measures required under paragraph (d) of this section. d. Burden of Proof In any enforcement proceeding, the permittee seeking to establish the occurrence of an upset has the burden of proof. 17. Other Rules and Regulations Liability The issuance of this permit in no way relieves the obligation of the permittee to comply with other rules and regulations of the Department.

18. Severability If any provision of this permit is held invalid, the remainder of this permit shall not be affected.

19. Other Conditions that Apply to NPDES and NPP Permits a. Land Application of Wastewater Effluent The permittee shall be permitted to discharge treated domestic wastewater effluent by means of land application in accordance with the regulations and standards set forth in NDEQ Title 119, Chapter 12 002. Page 7 of 12

The Wastewater Section of the Department must be notified in writing if the permittee chooses to land apply effluent. b. Toxic Pollutants The permittee shall not discharge pollutants to waters of the state that cause a violation of the standards established in NDEQ Titles 117, 118 or 119. All discharges to surface waters of the state shall be free of toxic (acute or chronic) substances which alone or in combination with other substances, create conditions unsuitable for aquatic life outside the appropriate mixing zone. c. Oil and Hazardous Substances/Spill Notification Nothing in this permit shall preclude the initiation of any legal action or relieve the permittee from any responsibilities, liabilities or penalties under section 311 of the Clean Water Act. The permittee shall conform to the provisions set forth in NDEQ Title 126, Rules and Regulations Pertaining to the Management of Wastes. If the permittee knows, or has reason to believe, that oil or hazardous substances were released at the facility and could enter waters of the state or any of the outfall discharges authorized in this permit, the permittee shall immediately notify the Department of a release of oil or hazardous substances. During Department office hours (i.e., 8:00 a.m. to 5:00 p.m., Monday through Friday, except holidays), notification shall be made to the Nebraska Department of Environmental Quality at telephone numbers (402) 471-2186 or (877) 253-2603 (toll free). When NDEQ cannot be contacted, the permittee shall report to the Nebraska State Patrol for referral to the NDEQ Immediate Response Team at telephone number (402) 471-4545. It shall be the permittee's responsibility to maintain current telephone numbers necessary to carry out the notification requirements set forth in this paragraph. d. Removed Substances i) Solids, sludge, filter backwash or other pollutants removed in the course of treatment or control of wastewater shall be disposed of at a site and in a manner approved by the Nebraska Department of Environmental Quality. (a) The disposal of nonhazardous industrial sludges shall conform to the standards established in or to the regulations established pursuant to 40 CFR Part 257. (b) The disposal of sludge shall conform to the standards established in or to the regulations established pursuant to 40 CFR Part 503. (c) If solids are disposed of in a licensed sanitary landfill, the disposal of solids shall conform to the standards established in NDEQ Title 132. ii) Publicly owned treatment works shall dispose of sewage sludge in a manner that protects public health and the environment from any adverse effects which may occur from toxic pollutants as defined in Section 307 of the Clean Water Act. iii) This permit may be modified or revoked and reissued to incorporate regulatory limitations established pursuant to 40 CFR Part 503. e. Representative Sampling i) Samples and measurements taken as required within this permit shall be representative of the discharge. All samples shall be taken at the monitoring points specified in this permit and, unless otherwise specified, before the effluent joins or is diluted by any other waste stream, body of water, or substance. Monitoring points shall not be changed without notification to the Department and with the written approval of the Director. ii) Composite sampling shall be conducted in one of the following manners; (a) Continuous discharge - a minimum of one discrete aliquot collected every three hours, (b) Less than 24 hours - a minimum of hourly discrete aliquots or a continuously drawn sample shall be collected during the discharge, or

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(c) Batch discharge - a minimum of three discrete aliquots shall be collected during each discharge. (d) Composite samples shall be collected in one of the following manners: (i) The volume of each aliquot must be proportional to either the waste stream flow at the time of sampling or the total waste stream flow since collection of the previous aliquot, (ii) A number of equal volume aliquots taken at varying time intervals in proportion to flow, (iii) A sample continuously collected in proportion to flow, and (e) Where flow proportional sampling is infeasible or non-representative of the pollutant loadings, the Department may approve the use of time composite samples. (f) Grab samples shall consist of a single aliquot collected over a time period not exceeding 15 minutes. iii) All sample preservation techniques shall conform to the methods adopted in NDEQ Title 119, Chapter 21 006 unless: (a) In the case of sludge samples, alternative techniques are specified in 40 CFR Part 503, or (b) Other procedures are specified in this permit. iv) Flow Measurements Appropriate flow measurement devices and methods consistent with accepted scientific practices shall be used to insure the accuracy and reliability of measurements. The devices shall be installed, calibrated and maintained to insure the accuracy of the measurements. The accepted capability shall be consistent with that type of device. Devices selected shall be capable of measuring flows with a maximum deviation of +/- 10%. The amount of deviation shall be from the true discharge rates throughout the range of expected discharge volumes. Guidance can be obtained from the following references for the selection, installation, calibration and operation of acceptable flow measurement devices: (a) “Water Measurement Manual,” U.S. Department of the Interior, Bureau of Reclamation, Third Edition, Revised Reprint, 2001. (Available online at http://www.usbr.gov/tsc/techreferences/mands/wmm/index.htm) (b) “NPDES Compliance Flow Measurement Manual, “U.S. Environmental Protection Agency, Office of Water Enforcement, Publication MCD-77, September 1981, 147 pp. (Available online at http://www.epa.gov/nscep, and enter ‘NPDES Compliance Flow Measurement Manual, Publication MCD-77’ in the search box) f. Changes of Loadings to Publicly Owned Treatment Works (POTWs) All POTWs must provide adequate notice to the Director of the following: i) Any new introduction of pollutants into the POTW from an indirect discharger which would be subject to NDEQ Title 119, Chapter 26, if it were directly discharging those pollutants; ii) Any substantial change in the volume or character of pollutants being introduced into that POTW by a source introducing pollutants into the POTW at the time of issuance of the permit. iii) For purposes of this paragraph, adequate notice shall include information on the quality and quantity of effluent introduced into the POTW, and any anticipated impact of the change on the quantity or quality of effluent to be discharged from the POTW.

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20. Definitions Administrator: The Administrator of the USEPA. Aliquot: An individual sample having a minimum volume of 100 milliliters that is collected either manually or in an automatic sampling device. Annually: Once every calendar year. Authorized Representative: Individual or position designated the authorization to submit reports, notifications, or other information requested by the Director on behalf of the Owner under the circumstances that the authorization is made in writing by the Owner, the authorization specifies the individual or position who is duly authorized, and the authorization is submitted to the Director. Bimonthly: Once every other month. Biosolids: Sewage sludge that is used or disposed through land application, surface disposal, incineration, or disposal in a municipal solid waste landfill. Biweekly: Once every other week. Bypass: The intentional diversion of wastes from any portion of a treatment facility. Certifying Official: See Section 13, Standard Conditions above. Daily Average: An effluent limitation that cannot be exceeded and is calculated by averaging the monitoring results for any given pollutant parameter obtained during a 24-hour day. Department: Nebraska Department of Environmental Quality. Director: The Director of the Nebraska Department of Environmental Quality. Industrial Discharge: Wastewater that originates from an industrial process and / or is noncontact cooling water and / or is boiler blowdown. Industrial User: A source of indirect discharge (a pretreatment facility). Monthly Average: An effluent limitation that cannot be exceeded. It is calculated by averaging any given pollutant parameter monitoring results obtained during a calendar month. Operator: A person (often the general contractor) designated by the owner who has day to day operational control and/or the ability to modify project plans and specifications related to the facility. Owner: A person or party possessing the title of the land on which the activities will occur; or if the activity is for a lease holder, the party or individual identified as the lease holder; or the contracting government agency responsible for the activity. Outfall: A discernible, confined and discrete conveyance, including but not limited to any pipe, ditch, channel, tunnel, conduit, well, discrete fissure, or container from which pollutants are or may be discharged into Waters of the State. Passive Discharge: A discharge from a POTW that occurs in the absence of an affirmative action and is not authorized by the NPDES permit (e.g. discharges due to a leaking valve, discharges from an overflow structure) and / or is a discharge from an overflow structure not designed as part of the POTW (e.g. discharges resulting from lagoon berm / dike breaches). Publicly Owned Treatment Works (POTW): A treatment works as defined by Section 212 of the Clean Water Act (Public Law 100-4) which is owned by the state or municipality, excluding any sewers or other conveyances not leading to a facility providing treatment. Semiannually: Twice every year.

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Significant Industrial User (SIU): All industrial users subject to Categorical Pretreatment Standards or any industrial user that, unless exempted under Chapter 1, Section 105 of NDEQ Title 119, discharges an average of 25,000 gallons per day or more of process water; or contributes a process waste stream which makes up 5 percent or more of the average dry weather hydraulic or organic capacity of the POTW; or is designated as such by the Director on the basis that the industrial user has a reasonable potential for adversely affecting the POTW's operation or for violating any National Pretreatment Standard or requirement. Sludge: Any solid, semisolid, or liquid waste generated from a municipal, commercial, or industrial wastewater treatment plant, water supply treatment plant, or air pollution control facility or any other such waste having similar characteristics and effect. 30-Day Average: An effluent limitation that cannot be exceeded. It is calculated by averaging any given pollutant parameter monitoring results obtained during a calendar month. Total Toxic Organics (TTO): The summation of all quantifiable values greater than 0.01 milligrams per liter (mg/l) for toxic organic compounds that may be identified elsewhere in this permit. (If this term has application in this permit, the list of toxic organic compounds will be identified, typically in the Limitations and Monitoring Section(s) and/or in an additional Appendix to this permit.) Toxic Pollutant: Those pollutants or combination of pollutants, including disease causing agents, after discharge and upon exposure, ingestion, inhalation or assimilation into an organism, either directly from the environment or indirectly by ingestion through food chains will, on the basis of information available to the administrator, cause death, disease, behavioral abnormalities, cancer, genetic mutations, physiological malfunction (including malfunctions in reproduction), or physical deformations in such organisms or their offspring. Upset: An exceptional incident in which there is unintentional and temporary noncompliance with technology based permit effluent limitations because of factors beyond the reasonable control of the permittee, excluding such factors as operational error, improperly designed or inadequate treatment facilities, or improper operation and maintenance or lack thereof. Volatile Organic Compounds (VOC): The summation of all quantifiable values greater than 0.01 milligrams per liter (mg/l) for volatile, toxic organic compounds that may be identified elsewhere in this permit. (See the definition for Total Toxic Organics above. In many instances, VOCs are defined as the volatile fraction of the TTO parameter. If the term VOC has application in this permit, the list of toxic organic compounds will be identified, typically in the Limitations and Monitoring Section(s) and/or in an additional Appendix to this permit.) Waters of the State: All waters within the jurisdiction of this state including all streams, lakes, ponds, impounding reservoirs, marshes, wetlands, watercourses, waterways, wells, springs, irrigation systems, drainage systems, and all other bodies or accumulations of water, surface and underground, natural or artificial, public or private, situated wholly or partly within or bordering upon the state. Weekly Average: An effluent limitation that cannot be exceeded. It is calculated by averaging any given pollutant parameter monitoring results obtained during a fixed calendar week. The permittee may start their week on any weekday but the weekday must remain fixed. The Department approval is required for any change of the starting day. "X" Day Average: An effluent limitation defined as the maximum allowable "X" day average of consecutive monitoring results during any monitoring period where "X" is a number in the range of one to seven days.

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21. Abbreviations CFR: Code of Federal Regulations kg/Day: Kilograms per Day MGD: Million Gallons per Day mg/L: Milligrams per Liter NOI: Notice of Intent NDEQ: Nebraska Department of Environmental Quality NDEQ Title 115: Rules of Practice and Procedure NDEQ Title 117: Nebraska Surface Water Quality Standards NDEQ Title 118: Ground Water Quality Standards and Use Classification NDEQ Title 119: Rules and Regulations Pertaining to the Issuance of Permits under the National Pollutant Discharge Elimination System NDEQ Title 126: Rules and Regulations Pertaining to the Management of Wastes NDEQ Title 132: Integrated Solid Waste Management Regulations NPDES: National Pollutant Discharge Elimination System NPP: Nebraska Pretreatment Program POTW: Publicly Owned Treatment Works µg/L: Micrograms per Liter WWTF: Wastewater Treatment Facility

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Appendix B – List of MS4s in the State of Nebraska

MS4 Contact information Traditional MS4s James Burroughs City Engineer (402) 228-5208 City of Beatrice th 205 N 4 St. [email protected] Beatrice, NE 68310 Dan Berlowitz City Administrator (402) 293-3021 City of Bellevue 210 W. Mission Ave. [email protected] Bellevue, NE 68005 Scott Kardell Village of Boys Director of Facilities (402) 498-1138 Town 355 McBreen Circle Boys Town, NE 68010 Michael Middendorf Engineering Department (402) 562-4237 OR 562-4235 City of Columbus th 2424 14 Street [email protected] Columbus, NE 68601 City of Dakota City See South Sioux City Justin Zetterman (402) 727-2636 Public Works Department City of Fremont [email protected] 400 E. Military Avenue, 3rd Floor

Fremont, NE 68025 Terry A. Brown City of Grand Assistant Public Works Director (308) 385-5444 Ext. 260 Island 100 E. First Street Cities Grand Island, NE 68801-1968 Deb Bergman Engineering Department (402)461-2339 City of Hastings 220 N. Hastings Ave. [email protected] Hastings, NE 68901 Dan Lillis Engineering Department (308) 233-3273 City of Kearney th 1919 15 Avenue [email protected] Kearney, NE 68845 John M. Kottmann, P.E. City Engineer (402) 331-8927 City of La Vista 9900 Portal Road [email protected] City of La Vista, NE 68128 Bill Brecks Building Inspection/Planning/Zoning (308) 324-2341 City of Lexington PO Box 70 [email protected] Lexington, NE 68850 Ben Higgins Watershed Management (402) 441-7589 City of Lincoln th 555 South 10 Street, Suite 203 [email protected] Lincoln, NE 68508 Trent Howard Prevention Bureau (402) 844-2060 City of Norfolk st 127 N. 1 Street [email protected] Norfolk, NE 68701 Thomas Werblow North Platte Engineering Dept. (308) 535-6724 City of North Platte 211 West Third Street [email protected] North Platte, NE 69101 James Kee, Jr. City of Omaha – Environmental Services (402) 444-3915 Ext. 238 City of Omaha Stormwater Program th [email protected] 5600 S. 10 Street Omaha, NE 68107 Marty Leming Public Works Director (402) 597-2043 City of Papillion 9909 Portal Rd [email protected] Papillion, NE 68046 Dan Freshman Public Works Department (402) 331-6677 Ext. 1310 City of Ralston th 5500 S. 77 Street [email protected] Ralston, NE 68127 Leann Sato City of Scottsbluff – Stormwater Program (308) 630-8011 City of Scottsbluff 2525 Circle Drive [email protected] Scottsbluff, NE 69361 Derek Morris City of South Sioux Public Works Department (402) 494-7534 City 125 East 26th Street [email protected] South Sioux City, NE 68776 Dakota County See South Sioux City Kent Holm Environmental Services (402) 444-6181 Douglas County 3015 Menke Circle [email protected] Counties Omaha, NE 68134 Sarpy County Administration (402) 593-2347 Sarpy County 1210 Golden Gate Drive, Suite 1126 [email protected] Papillion, NE 68046

Non-Traditional MS4s Nebraska Department of Roads Not applicable NDOR is a permitted MS4 for properties or locations owned by NDOR within all regulated (permitted) MS4s Brenda K. Osthus, Director Environmental Health & Safety University of Nebraska - University of Nebraska-Lincoln (402) 472-2925 Lincoln 3630 East Campus Loop Lincoln, NE 68583-0824 Andrew Heuerman 55 CES/CEVC Environmental Management Flight/ Storm 402-232-5876 Offutt Air Force Base Water [email protected] 106 Peacekeeper Drive, STE 2N3 Offutt AFB, NE 68113-4019

APPENDIX N

ADDITIONAL FORMS

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 48 Attachment # 2

Construction Storm Water Notice of Transfer (CSW-Transfer)

These prerequisite requirements must be completed prior to completing the CSW-TRANSFER form.

1. Transfer Prerequisites: a. Has the current owner and/or permittee of the Construction Activity provided the new owner and/or permittee with a copy of the NPDES General Permit Number NER110000? YES NO

b. Has the new owner and/or permittee been made aware that they must submit a Notice of Intent (CSW-NOI) to the Department and a copy of the CSW-NOI to the Municipality within whose jurisdiction they are located? (See Appendix B for a list of municipalities to whom this is relevant) YES NO

c. Has the new owner and/or permittee been made aware of their responsibility to fulfill all requirements of the permit? YES NO

d. Have all violations (if any) of this permit authorization been disclosed to the new owner and/or permittee? YES NO If “NO” has been answered to any of the above, fulfill these requirements before submitting the completed CSW- TRANSFER. 2. Permit & Property Description for Transfer a. Construction Storm water General Permit Authorization Number site is currently operating under: NER1 ______.

b. Current Project Name (as submitted on the CSW-NOI): ______c. Transfer Portion Information - Identification of the transferred portion of the property (such as a single lot, lot size, lot number, utility right of way, easement, etc.): ______

______

d. Property Transfer Size: Total Acres ______; Acres remaining after transfer: ______

e. Current Applicant Name: ______

Certifying Official Name: ______

(These must be the same as on the original CSW-NOI listed in 2.a, b above)

f. Mailing Address: ______

______

Telephone Number:(_____)______(optional) E-Mail:______

g. Effective Date of Property Transfer: ______

Page 1 of 2 Attachment # 2 3. New Information for Portion of Site Transferred The Certifying Official shall provide the Department and the Municipality within which they operate copies of this form with the following Project Information: a. New Project Name: ______b. New Owner and/or Permittee Information: 1) Company Name: ______

2) Certifying Official Name______

3) Certifying Official’s Title______

4) Mailing Address______

______

5) Telephone Number: (_____)______, E-Mail______(optional)

c. Signatures: For an permittee transferring authorization of any portion of the Construction Activity to a new permittee:

1) Current Certifying Official / Date:______/ ______

2) New Certifying Official / Date:______/ ______I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate and complete. I am aware that there are significant penalties for submitting false information including the possibility of fine and imprisonment for knowing violations.

Submit this form to: Water Quality Division Storm Water Suite 400, The Atrium 1200 ‘N’ Street PO Box 98922 Lincoln NE 68509-8922

Both parties must keep copies of this form. The party from whom the authorization is transferred must submit the original CSW-TRANSFER to the Department and the Municipality within which the construction project is located (see Appendix B for a list of municipalities). Also give the new holder of the authorization a copy of the CSW-TRANSFER.

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APPENDIX O

SITE-SPECIFIC PERMITS, DESIGN CALCULATIONS AND RELATED INFORMATION including NON-NPDES STORM WATER PERMITS, 404 PERMITS, ENDANGERED SPECIES INFORMATION, ENVIRONMENTAL SITE ASSESSMENTS, etc.

Rokeby Road; S. 84th to S. 96th 16-inch Water Main Lincoln, Nebraska OA Project No. C15-3105 49

May 11, 2017

John Rissetto Nebraska State Historical Society P.O. Box 82554 Lincoln, NE 68501-2554

Dear John:

Olsson Associates is currently working on the City of Lincoln, Rokeby Road; S. 84th St to S. 94th St. 16-inch Water Main project on the east side of Lincoln in Lancaster County, Nebraska. The project is installing a new 16-inch water main pipe and a NPDES permit is required. As part of the application process, we need to indicate if any historic, archaeological, or architectural properties are located within the project area. I have attached a map for your reference. Please let me know if there are any conflicts. If there is any further information you need from me, I can be contacted at 402.458.5917.

Sincerely,

Travis Figard

601 P Street, Suite 200 TEL 402.474.6311 Lincoln, NE 68508 FAX 402.474.5160 www.olssonassociates.com CITY OF LINCOLN

PROJECT NO: C15-3105 601 P Street, Suite 200 EXHIBIT AERIAL LOCATE P.O. Box 84608 DRAWN BY: TAF ROKEBY ROAD: 84TH ST. TO 94TH ST. Lincoln, NE 68508 R 16-INCH WATER MAIN PROJECT TEL 402.474.6311 DATE: 05/08/17 FAX 402.474.5160 1

Reserved for NDEQ use only

THREATENED & ENDANGERED SPECIES Guidance Checklist for NPDES Construction Storm Water General Permit #NER110000

*** Disclaimer: This checklist was developed for guidance purposes only in an effort to assist Construction Storm Water permit applicants to identify potential locations of threatened and endangered species. Completion of this checklist is not a requirement for permit authorization and is not intended to be used as a substitute for a professional environmental review. The use of this form does not relieve the permittee from further review or enforcement action by the Department of Environmental Quality (NDEQ) or Nebraska Game and Parks Commission (NG&PC).

Section I

1. For projects not located in Lancaster County: Is the project located X No Yes outside of designated city limits? 2. For projects located in Lancaster County: Does the project discharge X NoNo Yes storm water to Salt Creek, Little Salt Creek or Rock Creek? If project is not in Lancaster County check No. 3. For all projects: Is this project located in mature oak woodlands within 5 X No Yes miles of the Missouri River in the area stretching from the Kansas border to Ponca? 4. For all projects: Is this project within 0.25 miles of a stream of concern X No Yes or does it discharge to an stream of concern? (See Attached Stream Map) 5. For projects located within the distribution of the American Burying X No Yes Beetle (See Attached Map): Is the project located on potential habitat*? If it is not within the American Burying Beetle distribution, check No.

* Potential habitat constitutes land which has not been previously disturbed, typically by crop agriculture, and land not located within city limits.

♦ If you answered No to all questions in Section I, a NDEQ and NG&PC review may not be needed (see disclaimer above). Include this form with your SWPPP documentation.

♦ If you answered YES to only question 1, complete Section II.

♦ If you answered YES to any of questions 2 thru 5 in Section I, consultation with NDEQ & NG&PC is necessary (Section III).

1 Revised January 2008

Section II

1. Will project construction take place between April 1 and May 10 or X No Yes October 1 and November 15 in the following locations? • In non-urban areas within 3 miles of the Platte, Loup, Middle Loup, North Loup or Niobrara Rivers; or • In non-urban areas within 1 mile of a wetland within the Primary Whooping Crane Use area. 2. Will project construction take place between April 1 and June 15 in the X No Yes following locations? • A wheat field or heavily grazed prairie in • Kimball County; or • Banner County (south of Harrisburg); or • Cheyenne County (west of Sidney). 3. Will project construction take place between April 15 and September 15 X No Yes within 0.25 miles of rivers at the following locations? • The Lower Platte River from Columbus to Plattsmouth; or • The Missouri River from where it joins the Nebraska/South Dakota state border to Ponca; or • The Loup River between St. Paul and Columbus; or • The Niobrara River between Springview and where the Missouri and Niobrara Rivers converge. 4. Will project construction take place between April 15 and September 15 X No Yes in the following locations? • An active or recently active sand and gravel operation with bare sand substrate located within 5 miles of the Platte, Loup, South Loup, Middle Loup, North Loup, Niobrara, Elkhorn, or Missouri Rivers. 5. Is the project construction on a non-crop, non-urban site in Pawnee X No Yes County (west of Pawnee City), Johnson County or Gage County (south of Beatrice)? 6. Is the project construction within 1 mile of the North Platte, Platte, Little X No Yes Nemaha, Cedar, Loup, South Loup, North Loup, Calamus, Niobrara, Elkhorn Rivers, or Lodgepole Creek from Kimball to the Wyoming State line? 7. Is the project construction on a non-crop, non-urban site in the Swift Fox X No Yes distribution area? (See Attached Distribution Map) 8. Will the project construction impact open active sandy blowouts in X No Yes Cherry County, the south east quarter of Sheridan County, or the north half of Thomas, Hooker or Grant Counties? 9. Is the project construction within 0.5 miles of the Niobrara River from X No Yes Highway 29 to the Wyoming state line? 10. Will the project construction impact wet meadows in the Orchid X No Yes distribution area? (See Attached Distribution Map)

♦ If you answered No to all questions in Section II, a NDEQ and NG&PC review may not be needed (see disclaimer above). Include this form with your SWPPP documentation.

2 Revised February 2008 ♦ If you answered YES to any of questions in Section II, consultation with NDEQ & NG&PC is necessary (Section III).

Section III

♦ If you answered Yes to any of the questions in Section I or II, Please complete the information in this section and submit the information to NDEQ.

♦ Questions regarding use of this form may be directed to NDEQ staff at (402) 471-8330.

♦ Questions regarding specific items in Section I or II may be directed to NG&PC staff at (402)471-5444.

Applicant Information

Project Name: ______Rokeby Road; S. 84th to S 94th St. 16-inch Water Main County: ______Lancaster Physical Address: ______Rokeby Road from S. 84th St to S. 94th St Date: ______Spring/Summer 2017 Legal Description: ______(Q), Section _____,26,35 Township _____N,9 Range ____07 (E or W) Latitude: ______Longitude: ______Method:______Project Contact: ______Telephone:Travis Figard ______402.458.5917 Email: [email protected]

Type of Construction: Residential Commercial Industrial X Linear Livestock Other______

Size of Construction Area: ______5 acres Size of Borrow Area: ______0 acres Current Land Use: ______Agriculture

Description of Project: Description should include the general project description. A second page should be used if necessary. The project will consist of a new 16-inch water main

Map of Project Area: Topographic and/or aerial maps with the specific project area delineated are encouraged as this will expedite processing time.

NDEQ: Water Quality Division Storm Water Suite 400, The Atrium 1200 ‘N’ Street P.O. Box 98922 Lincoln, NE 68509-8922 (402) 471-8330

NG&PC: Nebraska Game & Parks Commission Environmental Analyst Supervisor, Heritage Division 2200 North 33rd Street P.O. Box 30370 Lincoln, NE 68508-2707 (402) 471-5438

3 Revised January 2008

5 Revised January 2008

6 Revised February 2008

7 Revised January 2008

8 Revised February 2008 K Factor, Rock Free—Lancaster County, Nebraska (Rokeby Road - 84th to 94th 16-inch Water Main Project) 96° 36' 30'' W 96° 35' 13'' W

702000 702100 702200 702300 702400 702500 702600 702700 702800 702900 703000 703100 703200 703300 703400 703500 703600 703700 703800 40° 43' 1'' N 40° 43' 1'' N 4510100 4510000 4510000 4509900 4509900 4509800 4509800 4509700 4509700 4509600 4509600 4509500 4509500 4509400 4509400 4509300 4509300 4509200 4509200 4509100 4509100

4509000 Soil Map may not be valid at this scale. 4509000 40° 42' 23'' N 40° 42' 23'' N 702100 702200 702300 702400 702500 702600 702700 702800 702900 703000 703100 703200 703300 703400 703500 703600 703700 703800

Map Scale: 1:8,230 if printed on A landscape (11" x 8.5") sheet. Meters

96° 36' 30'' W N 0 100 200 400 600 96° 35' 13'' W Feet 0 400 800 1600 2400 Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 14N WGS84

Natural Resources Web Soil Survey 5/8/2017 Conservation Service National Cooperative Soil Survey Page 1 of 3 K Factor, Rock Free—Lancaster County, Nebraska (Rokeby Road - 84th to 94th 16-inch Water Main Project)

MAP LEGEND MAP INFORMATION

Area of Interest (AOI) .24 Streams and Canals The soil surveys that comprise your AOI were mapped at Area of Interest (AOI) 1:20,000. .28 Transportation Soils Rails .32 Warning: Soil Map may not be valid at this scale. Soil Rating Polygons Interstate Highways Enlargement of maps beyond the scale of mapping can cause .02 .37 US Routes misunderstanding of the detail of mapping and accuracy of soil .05 .43 line placement. The maps do not show the small areas of Major Roads contrasting soils that could have been shown at a more detailed .49 .10 scale. Local Roads .15 .55 Background Please rely on the bar scale on each map sheet for map .17 .64 Aerial Photography measurements. Not rated or not available .20 Source of Map: Natural Resources Conservation Service Web Soil Survey URL: .24 Soil Rating Points .02 Coordinate System: Web Mercator (EPSG:3857) .28 .05 Maps from the Web Soil Survey are based on the Web Mercator .32 projection, which preserves direction and shape but distorts .10 distance and area. A projection that preserves area, such as the .37 Albers equal-area conic projection, should be used if more .15 .43 accurate calculations of distance or area are required. .17 .49 This product is generated from the USDA-NRCS certified data .20 as of the version date(s) listed below. .55 .24 Soil Survey Area: Lancaster County, Nebraska .64 Survey Area Data: Version 21, Sep 8, 2016 .28 Not rated or not available Soil map units are labeled (as space allows) for map scales .32 Soil Rating Lines 1:50,000 or larger. .02 .37 Date(s) aerial images were photographed: Apr 12, 2011—Aug 1, 2011 .05 .43 The orthophoto or other base map on which the soil lines were .10 .49 compiled and digitized probably differs from the background .15 .55 imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. .17 .64

.20 Not rated or not available Water Features

Natural Resources Web Soil Survey 5/8/2017 Conservation Service National Cooperative Soil Survey Page 2 of 3 K Factor, Rock Free—Lancaster County, Nebraska Rokeby Road - 84th to 94th 16-inch Water Main Project

K Factor, Rock Free

K Factor, Rock Free— Summary by Map Unit — Lancaster County, Nebraska (NE109)

Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 7681 Wymore silty clay loam, .32 9.7 24.8% 1 to 3 percent slopes 7684 Wymore silty clay loam, .32 24.4 62.7% 3 to 6 percent slopes, eroded 7697 Wymore silty clay loam, .32 4.9 12.5% 6 to 11 percent slopes Totals for Area of Interest 38.9 100.0%

Description

Erosion factor K indicates the susceptibility of a soil to sheet and rill erosion by water. Factor K is one of six factors used in the Universal Soil Loss Equation (USLE) and the Revised Universal Soil Loss Equation (RUSLE) to predict the average annual rate of soil loss by sheet and rill erosion in tons per acre per year. The estimates are based primarily on percentage of silt, sand, and organic matter and on soil structure and saturated hydraulic conductivity (Ksat). Values of K range from 0.02 to 0.69. Other factors being equal, the higher the value, the more susceptible the soil is to sheet and rill erosion by water.

"Erosion factor Kf (rock free)" indicates the erodibility of the fine-earth fraction, or the material less than 2 millimeters in size. Rating Options

Aggregation Method: Dominant Condition Component Percent Cutoff: None Specified Tie-break Rule: Higher Layer Options (Horizon Aggregation Method): Surface Layer (Not applicable)

Natural Resources Web Soil Survey 5/8/2017 Conservation Service National Cooperative Soil Survey Page 3 of 3 Hydrologic Soil Group—Lancaster County, Nebraska (Rokeby Road - 84th to 94th 16-inch Water Main Project) 96° 36' 30'' W 96° 35' 13'' W

702000 702100 702200 702300 702400 702500 702600 702700 702800 702900 703000 703100 703200 703300 703400 703500 703600 703700 703800 40° 43' 1'' N 40° 43' 1'' N 4510100 4510000 4510000 4509900 4509900 4509800 4509800 4509700 4509700 4509600 4509600 4509500 4509500 4509400 4509400 4509300 4509300 4509200 4509200 4509100 4509100

4509000 Soil Map may not be valid at this scale. 4509000 40° 42' 23'' N 40° 42' 23'' N 702100 702200 702300 702400 702500 702600 702700 702800 702900 703000 703100 703200 703300 703400 703500 703600 703700 703800

Map Scale: 1:8,230 if printed on A landscape (11" x 8.5") sheet. Meters

96° 36' 30'' W N 0 100 200 400 600 96° 35' 13'' W Feet 0 400 800 1600 2400 Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 14N WGS84

Natural Resources Web Soil Survey 5/8/2017 Conservation Service National Cooperative Soil Survey Page 1 of 4 Hydrologic Soil Group—Lancaster County, Nebraska (Rokeby Road - 84th to 94th 16-inch Water Main Project)

MAP LEGEND MAP INFORMATION

Area of Interest (AOI) C The soil surveys that comprise your AOI were mapped at Area of Interest (AOI) 1:20,000. C/D Soils D Warning: Soil Map may not be valid at this scale. Soil Rating Polygons Enlargement of maps beyond the scale of mapping can cause A Not rated or not available misunderstanding of the detail of mapping and accuracy of soil A/D Water Features line placement. The maps do not show the small areas of Streams and Canals contrasting soils that could have been shown at a more detailed B scale. Transportation B/D Rails Please rely on the bar scale on each map sheet for map C Interstate Highways measurements. C/D US Routes Source of Map: Natural Resources Conservation Service Web Soil Survey URL: D Major Roads Coordinate System: Web Mercator (EPSG:3857) Not rated or not available Local Roads Maps from the Web Soil Survey are based on the Web Mercator Soil Rating Lines projection, which preserves direction and shape but distorts Background A distance and area. A projection that preserves area, such as the Aerial Photography Albers equal-area conic projection, should be used if more A/D accurate calculations of distance or area are required. B This product is generated from the USDA-NRCS certified data as B/D of the version date(s) listed below.

C Soil Survey Area: Lancaster County, Nebraska Survey Area Data: Version 21, Sep 8, 2016 C/D Soil map units are labeled (as space allows) for map scales D 1:50,000 or larger. Not rated or not available Date(s) aerial images were photographed: Apr 12, 2011—Aug 1, 2011 Soil Rating Points A The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background A/D imagery displayed on these maps. As a result, some minor B shifting of map unit boundaries may be evident.

B/D

Natural Resources Web Soil Survey 5/8/2017 Conservation Service National Cooperative Soil Survey Page 2 of 4 Hydrologic Soil Group—Lancaster County, Nebraska Rokeby Road - 84th to 94th 16-inch Water Main Project

Hydrologic Soil Group

Hydrologic Soil Group— Summary by Map Unit — Lancaster County, Nebraska (NE109)

Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 7681 Wymore silty clay loam, D 9.7 24.8% 1 to 3 percent slopes 7684 Wymore silty clay loam, D 24.4 62.7% 3 to 6 percent slopes, eroded 7697 Wymore silty clay loam, D 4.9 12.5% 6 to 11 percent slopes Totals for Area of Interest 38.9 100.0%

Description

Hydrologic soil groups are based on estimates of runoff potential. Soils are assigned to one of four groups according to the rate of water infiltration when the soils are not protected by vegetation, are thoroughly wet, and receive precipitation from long-duration storms.

The soils in the United States are assigned to four groups (A, B, C, and D) and three dual classes (A/D, B/D, and C/D). The groups are defined as follows:

Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly wet. These consist mainly of deep, well drained to excessively drained sands or gravelly sands. These soils have a high rate of water transmission.

Group B. Soils having a moderate infiltration rate when thoroughly wet. These consist chiefly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture. These soils have a moderate rate of water transmission.

Group C. Soils having a slow infiltration rate when thoroughly wet. These consist chiefly of soils having a layer that impedes the downward movement of water or soils of moderately fine texture or fine texture. These soils have a slow rate of water transmission.

Group D. Soils having a very slow infiltration rate (high runoff potential) when thoroughly wet. These consist chiefly of clays that have a high shrink-swell potential, soils that have a high water table, soils that have a claypan or clay layer at or near the surface, and soils that are shallow over nearly impervious material. These soils have a very slow rate of water transmission.

If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is for drained areas and the second is for undrained areas. Only the soils that in their natural condition are in group D are assigned to dual classes.

Natural Resources Web Soil Survey 5/8/2017 Conservation Service National Cooperative Soil Survey Page 3 of 4 Hydrologic Soil Group—Lancaster County, Nebraska Rokeby Road - 84th to 94th 16-inch Water Main Project

Rating Options

Aggregation Method: Dominant Condition Component Percent Cutoff: None Specified Tie-break Rule: Higher

Natural Resources Web Soil Survey 5/8/2017 Conservation Service National Cooperative Soil Survey Page 4 of 4

ATTACHMENT 5: TURF REINFORCEMENT MAT INSTALLATION

INSTALLATION GUIDELINES FOR LANDLOK® TRMs AND PYRAMAT® HPTRMs

BEFORE YOU BEGIN Thank you for purchasing high quality Landlok® Turf Reinforcement Mats (TRMs) and Pyramat® High Performance Turf Reinforcement Mats (HPTRMs) from Propex. We’re committed to offering the best erosion control products in the industry.

It is important to follow these installation guidelines for a successful project. (Note: Construction shall be performed in accordance with the specific project bid documents, construction drawings, and specifications.) In addition, we suggest that a pre-installation meeting be held with the construction team and a representative from Propex. This meeting shall be scheduled by the contractor with at least two weeks notice. Also, Propex suggests that installation monitoring of our TRMs and HPTRMs be performed by a qualified independent third party.

SITE PREPARATION Grade and compact area of TRM/HPTRM installation as directed and approved by Engineer. Subgrade shall be uniform and smooth. Remove all rocks, clods, vegetation or other objects so the installed mat will have direct contact with soil surface. Prepare seedbed by loosening the top 2-3 in (50-75 mm) minimum of soil. Incorporate amendments such as lime and fertilizer and/or wet the soil, if needed. Do not mulch areas where mat is to be placed.

SEEDING Apply seed to soil surface before installing mat. Disturbed areas shall be reseeded. When soil filling, first install the mat, apply seed and then soil-fill per guidelines (see page 8). Consult project plans and/or specifications for seed types and application rates. INSTALLATION GUIDELINES FOR LANDLOK® TRMs AND PYRAMAT® HPTRMs

INSTALLATION ON STABLE SOIL SLOPES Excavate a 12 x 6 in (300 x 15 mm) minimum longitudinal anchor trench 2-3 ft (600-900 mm) over crest of slope (see Figure 2). Install top end of mat into trench and secure to bottom using suggested ground anchoring devices (see Tables 1 and 2 on page 7) spaced every 12 in (300 mm) minimum. Backfill and compact soil into trench (see Figure 2). Unroll mat down slope. Landlok® 1051 shall have the geotextile on bottom. Overlaps shall be 6 in (150 mm) minimum and anchored every 18 in (450 mm) minimum along the overlap. Secure using suggested ground anchoring devices shown in Table 1 for appropriate frequency and pattern. Overlaps are shingled away from prevailing winds (see Figure 1). Unroll mat in a manner to maintain direct contact with soil. Secure mat to ground surface using ground anchoring devices (see Table 1). Anchors shall be placed in accordance with the Anchor Pattern Guide on page 7. Excavate a 12 x 6 in (300 x 150 mm) key anchor trench at toe of slope (see Figure 3). Place bottom end of mat into key anchor trench at toe of slope and secure to bottom of trench using suggested ground anchoring devices (see Tables 1 and 2) spaced every 12 in (300 mm) minimum. Backfill and compact soil into trench (see Figure 3). If the potential for standing and/or flowing water exists at the toe of slope, the key anchor trench at the toe detail (see Figure 3) is not sufficient. Consult the project engineer for the appropriate detail. Irrigate as necessary to establish/maintain vegetation. Do not over-irrigate.

Longitudinal FIGURE 1 anchor trench 2 Installation of permanent turf reinforcement mat on slope • Overlaps 6 in (150 mm) minimum • Space anchors 18 in along overlaps down the slope • Anchor pattern shall be Key anchor in accordance with the trench at “Anchor Pattern Guide” toe of slope found on page 7 3

2 2-3´

12˝

FIGURE 2 Longitudinal anchor trench at top of slope • Space anchors 12 in (300 mm) along bottom of trench 6˝

12˝

6˝

12˝ FIGURE 3 Key anchor trench at toe of slope

INSTALLATION IN STORM WATER CHANNELS

Figure 4 shows general installation layout and details for TRMs and HPTRMs in storm water channels. Excavate an initial anchor trench 12 in (300 mm) minimum deep and 12 in (300 mm) minimum wide across the channel at downstream end of project (see Figure 5). Deeper initial anchor trench is needed in channels that have the potential for scour. Excavate longitudinal anchor trenches 12 in (300 mm) minimum deep and 6 in (150 mm) minimum wide along both sides of the installation to bury edges of mat (see Figure 6). The trench shall be located 2-3 ft (600-900 mm) over crest of slope. Place roll end into the initial anchor trench and secure with anchoring devices at 12 in (300 mm) minimum intervals (see Figure 5). Position adjacent rolls and secure in anchor trench in same manner. Backfill and compact soil into trench. Unroll mat in the upstream direction over the compacted trench. Continue installation as described above, overlapping adjacent rolls as follows: · Roll edge: 6 in (150 mm) minimum with upslope mat on top. Secure with one row of ground anchoring devices on 12 in (300 mm) minimum intervals (see Figure 7). · Roll end: 12 in (300 mm) minimum with upstream mat on top. Secure with two rows of ground anchoring devices staggered 12 in (300 mm) minimum apart on 12 in (300 mm) minimum intervals (see Figure 8). Fold and secure mat rolls snugly into intermittent check slots. Lay mat in the bottom and fold back against itself. Anchor through both layers of blanket or mat at 1 ft (300 mm) intervals then backfill and compact soil (Figure 9). Continue rolling upstream over the compacted slot to the next check slot or terminal anchor trench. Check slots are placed at 25 to 30 ft (7.6 to 9.1 m) intervals perpendicular to flow.

3 INSTALLATION GUIDELINES FOR LANDLOK® TRMs AND PYRAMAT® HPTRMs

11

6 7 7 8 9 or 10

5

NOT TO SCALE

FIGURE 4 Installation of TRMs & HPTRMs in storm water channels

An alternate method to the intermittent check slot is the simulated check slot. This method includes placing two staggered rows of 12˝ anchors on 4 in (100 mm) centers at 30 ft (9.1 m) intervals (see 12˝ Figure 10). Excavate terminal anchor trench 12 in wide x 12 in deep (300 x 300 mm) minimum across the channel at the upstream end of the project (see Figure 11). Deeper terminal anchor trench is needed in channels 12˝ Backfill that have the potential for scour. and compact 12˝ Anchor, backfill and compact upstream end of mat in 12 x 12 in (300 x 300 mm) minimum terminal anchor trench (see Figure 11). Unroll FIGURE 5 Initial anchor trench (downstream) detail mat in downstream direction over compacted trench with a minimum 2 ft (600 mm) lap. Secure with anchors in accordance with Figure 8. Secure mat using suggested ground anchoring devices (see Tables 1 2´-3´ and 2 on page 7) for appropriate frequency and pattern (see Anchor Pattern Guide on page 7). Seed and fill with soil for enhanced performance. See Soil Filling Section on page 8. Backfill and 12˝ compact When using Landlok® 1051, seed after installing mat and then fill with soil.

6˝ Irrigate as necessary to establish/maintain vegetation. Do not over irrigate. FIGURE 6 Longitudinal anchor trench detail (trapezoidal channel) NOTE: If you encounter roll with factory overlap, install factory seam such that it shingles in the direction of the flow of water. Place anchoring devices in accordance with Figure 8 “Overlap at roll end” on page 5.

4 12˝ (typ.)

6˝ (typ.)

4˝ FIGURE 7 Overlap at roll edge max. Anchor devices (typ.) (typ.)

4˝ max. (typ.) 12˝ (typ.)

6˝ (typ.) 2˝ max. (typ.)

12˝

FIGURE 8 Overlap at roll end 30´ max. (typ.)

4˝ max. (typ.)

4˝ max. (typ.) 12˝ 2˝ max. (typ.)

6˝

FIGURE 9 Intermittent check slot (channels) FIGURE 10 Simulated check slot

2´ 12˝

Backfill and 12˝ compact

FIGURE 11 Terminal anchor trench (upstream) detail

5 INSTALLATION GUIDELINES FOR LANDLOK® TRMs AND PYRAMAT® HPTRMs

SPECIAL TRANSITION GUIDELINES Rock Riprap • Excavate an anchor trench 12 x 12 in (300 x 300 mm) minimum at the transition between the mat and the rock riprap. • Place roll end into anchor trench and secure with suggested anchoring devices at 12 in (300 mm) minimum intervals. Position adjacent rolls and secure in anchor trench in same manner. • Backfill the anchor trench with rock riprap. • Place rock riprap as specified, extending approximately 3 ft (1 m) minimum beyond the anchor trench onto the mat. Concrete • Alternative 1: Concrete Apron - Place ready mixed concrete directly onto a 3 ft (0.9 m) wide minimum strip of mat. • Alternative 2: Concrete Backfill - Excavate an anchor trench 12 x 12 in (300 x 300 mm) minimum at the edge of the concrete structure. - Place roll end into anchor trench and secure with suggested anchoring devices at 12 in (300 mm) minimum intervals. Position adjacent rolls and secure in anchor trench in same manner. - Backfill trench with concrete slurry. • Alternative 3: Bolt to Structure (HPTRMs Only) - Cast threaded dowel in fresh ready mix concrete or install expanding bolt into cured concrete. Then affix HPTRM with washer (minimum 2 in or 50 mm diameter) or batten strip and bolt. Pipe Inlets/Outlets (HPTRMs Only) • Review the construction drawings and project specifications to evaluate the required area to be treated. • Excavate an anchor trench 12 x 12 in (300 x 300 mm) minimum above the pipe to bury end of HPTRM roll. The trench shall be located a minimum 2-3 ft (600-900 mm) above the pipe inlet/outlet. • Backfill and compact soil into trench. • Cut HPTRM to meet project requirements, slope length and pipe diameter. • Unroll HPTRM down the slope and secure around pipe circumference with ground anchoring devices spaced 6 in (150 mm) minimum. Also, the HPTRM can be secured around the pipe in a 12 x 12 in (300 x 300 mm) minimum trench filled with concrete slurry.

GROUND ANCHORING DEVICES Ground anchoring devices are used to secure the mat to the soil using the suggested anchor device (see Tables 1 and 2 on page 7) at a minimum frequency and pattern shown on the Anchor Pattern Guide on page 7. U-shaped wire staples or metal geotextile pins can be used to anchor mat to the ground surface. Wire staples should be a minimum thickness 1 of 8 gauge (4.3 mm). Metal pins should be at least 0.20 in (5 mm) diameter steel with a 1 /2 in (38 mm) steel washer at the head of the pin. Wire staples and metal pins should be driven flush to the soil surface. All anchors should be between 6-24 in (150-600 mm) long and have sufficient ground penetration to resist pullout. Longer anchors may be required for loose soils. Heavier metal stakes may be required in rocky soils.

6 TABLE 1: SUGGESTED GROUND ANCHORING DEVICE SELECTION*

METAL PIN/WASHERS PERCUSSION DEGRADABLE STAKES WIRE STAPLES OR NAIL/WASHERS DRIVEN ANCHORS

LANDLOK® ECBs

LANDLOK® TRMs PRODUCT PYRAMAT®

SLOPES

BANKS

APPLICATION CHANNELS

TABLE 2: SUGGESTED LENGTHS OF GROUND ANCHORING DEVICES*

6-INCH 12-INCH 18-INCH 24-INCH

ROCKY

CLAYEY

SILTY SOIL TYPES

SANDY

*The performance of ground anchoring devices is highly dependent on numerous site/project specific variables. It is the sole responsibility of the project engineer and/or contractor to select the appropriate anchor type and length. Anchoring shall be selected to hold the mat in intimate contact with the soil subgrade and resist pullout in accordance with the project’s design intent.

ANCHOR PATTERN GUIDE The shaded areas in the diagram provide anchor suggestions based on slope gradient and/or anticipated flow conditions. When the correct number of anchors has been determined, refer to the four illustrations below to establish anchor pattern. Increased anchoring may be required depending upon site conditions.

7 SOIL FILLING Soil filling is suggested for optimum performance.

1 3 After seeding, spread and lightly rake /2 - /4 in (12-19 mm) minimum of fine site soil or topsoil into the mat and completely fill the voids using backside of rake or other flat tool. If equipment must operate on the mat, make sure it is of the rubber-tired type. No tracked equipment or sharp turns are allowed on the mat. Avoid any traffic over the mat if loose or wet soil conditions exist. Smooth soil-fill in order to just expose the top netting of matrix. Do not place excessive soil above the mat. Broadcast additional seed and install a Landlok® ECB above the soil-filled mat (if desired). Hydraulically-applied mulch or seed may be used as an alternate to soil-fill on select applications. Consult manufacturer’s technical representative for more information. Consult manufacturer’s technical representative or local distributor for installation assistance, particularly if unique conditions apply (sandy soils and infertile environments).

MAINTENANCE All slopes, channels, banks and other transition structures shall be maintained to assure the expected design life of the reinforced vegetated system. Here are a few tips that should prove helpful: Monitoring • Should be conducted semi-annually and after major storm events. This should include: observing the condition of the vegetation; testing the irrigation system; checking condition of all permanent erosion control systems; observing sediment and debris deposits that need removal. Vegetation • Repair and maintenance of various types of vegetation shall be consistent with their original design intent, including: - Grass/Turf Areas: applications shall be maintained for adequate cover and height. - Mowing: grasses shall be mowed according to normal maintenance schedules as determined by local jurisdictions or maintenance agreements; operations shall not start until vegetation achieves a minimum height of 6 in (150 mm); mower blades shall be greater than 6 in (150 mm) above the mat. - Unvegetated Areas: shall be re-seeded and soil-filled (if applicable). Sediment and Debris Deposits • Accumulation of sediment and debris can reduce the hydraulic capacity of channels, clog inlet and outlet structures and can damage existing vegetation. Sediment and debris removal is a vital part of system maintenance. - Removal: shall be done carefully to avoid damage. When excavation is within 12 in (300 mm) minimum of matting, removal shall be done by hand or with a visual “spotter.” If equipment must operate on the mat, make sure it is of the rubber-tired type. No tracked equipment or sharp turns are allowed on the mat. • Alternatively, “stake chasers” or some other form of permanent visual markers can be utilized to provide a visual marker for maintenance activities. Damaged Sections • Missing or damaged sections of the matting should be replaced per the installation guidelines. - Repairing Rips or Holes: these should be patched with identical matting material. First, carefully cut out the damaged section with a knife. Then replace and compact soil to the elevation of the surrounding subgrade and plant seed. Cut a piece of replacement material a minimum of 12 in (300 mm) larger than the rip or tear. Use ties to attach the replacement material to the existing material. At overlaps, the upstream and upslope material should be on top. Secure the replacement material with ground anchoring devices spaced every 6 in (150 mm) around the circumference of the repair and at the frequency and spacing shown in the Anchor Pattern Guide on page 7. Seed and soil fill replacement area.

Propex Inc. PH: 423 899 0444 6025 Lee Highway, Suite 425 PH: 800 621 1273 PO Box 22788 FAX: 423 899 7619 Chattanooga, TN 37422 www.geotextile.com

Geotex®, Landlok®, Pyramat®, X3®, SuperGro®, Petromat®, Petrotac®, Pro-Guard® and PetroGrid® are registered trademarks of Propex Inc. THIS PUBLICATION SHOULD NOT BE CONSTRUED AS ENGINEERING ADVICE. WHILE INFORMATION CONTAINED IN THIS PUBLICATION IS ACCURATE TO THE BEST OF OUR KNOWLEDGE, PROPEX DOES NOT WARRANT ITS ACCURACY OR COMPLETENESS. THE ULTIMATE CUSTOMER AND USER OF THE PRODUCTS SHOULD ASSUME SOLE RESPONSIBILITY FOR THE FINAL DETERMINATION OF THE SUITABILITY OF THE INFORMATION AND THE PRODUCTS FOR THE CONTEMPLATED AND ACTUAL USE. THE ONLY WARRANTY MADE BY PROPEX FOR ITS PRODUCTS IS SET FORTH IN OUR PRODUCT DATA SHEETS FOR THE PRODUCT, OR SUCH OTHER WRITTEN WARRANTY AS MAY BE AGREED BY PROPEX AND INDIVIDUAL CUSTOMERS. PROPEX SPECIFICALLY DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION,WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, OR ARISING FROM PROVISION OF SAMPLES, A COURSE OF DEALING OR USAGE OF TRADE. LL-538 © 2007 Propex Inc. 5/07