Erosion and Sediment Control Details

DIVISION III STANDARD DRAWINGS EROSION & SEDIMENT CONTROL

AMERICAN PUBLIC WORKS ASSOCIATION

KANSAS CITY METRO CHAPTER

STANDARD DRAWING COVER PAGE / NUMBER ESC-TC TABLE OF CONTENTS ADOPTED: 10/24/2016 50' Min.

Existing Ground 10' Min. Washrack / Rumble Strip Notes for Concrete Washout: (Optional)

1.Concrete washout areas shall be installed prior to any concrete placement on site.

2.Concrete washout area shall include a flat subsurface pit sized 10' Min. relative to the amount of concrete to be placed on site. The slopes * 20' Min. leading out of the subsurface pit shall be 3:1. The vehicle tracking Existing pad shall be sloped towards the concrete washout area. Pavement

3.Vehicle tracking control is required at the access point to all concrete washout areas.

4.Signs shall be placed at the construction site entrance, washout area and elsewhere as necessary to clearly indicate the location(s) of the concrete washout area(s) to operators of concrete truck 2-3" Coarse Positive drainage 10' Min. and pump rigs. Aggregate to Sediment Trapping Device 5. A one-piece impervious liner may be required along the bottom and sides of the subsurface pit in sandy or gravelly soils. * - Must extend full width of ingress and egress operation

Plan View

Not to Scale

A Maintenance for Concrete Washout: 50' Min. 1.Concrete washout materials shall be removed once the materials 5:1 have filled the washout to approximately 75% full. Existing Ground 3' Existing Pavement 2.Concrete washout areas shall be enlarged as necessary to maintain capacity for wasted concrete.

3.Concrete washout water, wasted pieces of concrete and all other debris in the subsurface pit shall be transported from the job site in a water-tight container and disposed of properly.

4.Concrete washout areas shall remain in place until all concrete for Mountable Berm (Optional) 6" Min. the project is placed. Non-Woven Geotextile A 5.When concrete washout areas are removed, excavations shall be filled with suitable compacted backfill and topsoil, any disturbed areas Side Elevation associated with the installation, maintenance, and/or removal of the concrete washout areas shall be stabilized. Not to Scale

20' Min.

3" Min. Excavated material Shall

be used for perimeter berm.

3" Min. Soil for berm Shall be

compacted in the same Construction Fence (optional) manner as trench backfill.

Non-Woven Geotextile Vehicle Tracking Section A-A Existing Control Grade Not to Scale Slope 4:1

3:1

Notes for Construction Entrance: Maintenance for Construction Entrance:

1. Avoid locating on steep slopes, at curves on public roads, or 1. Reshape entrance as needed to maintain function and downhill of disturbed area. integrity of Installation. Top dress with clean aggregate as needed. 2. Remove all vegetation and other unsuitable material from the foundation area, grade, and crown for positive drainage.

3. If slope towards the public road exceeds 2%, construct a CONCRETE WASHOUT 6- to 8-inch high ridge with 3H:1V side slopes across the foundation approximately 15 feet from the edge of the public road to divert runoff from it.

4. Install pipe under the entrance if needed to maintain drainage ditches along public roads. AMERICAN PUBLIC WORKS ASSOCIATION

5. Place stone to dimensions and grade as shown on plans. CONSTRUCTION ENTRANCE Leave surface sloped for drainage. KANSAS CITY

6. Divert all surface runoff and drainage from the entrance to a sediment control device. METRO CHAPTER

7. If conditions warrant, place geotextile fabric on STANDARD DRAWING the graded foundation to improve stability. Construction Entrance modified from 2015 Overland Park Standard Details CONSTRUCTION ENTRANCE NUMBER ESC-01 for Erosion and Sediment Control; Concrete Washout modified from 2009 ADOPTED: City of Great Bend Standard Drawings. AND CONCRETE WASHOUT 10/24/2016 Longitudinal Seam Anchor Slot General Notes: Longitudinal Seam Anchor Fold

Notes for Installation in Channels: 1. APWA Specifications 2150 and Design Guidance 5100 shall be 6" Min. referenced to select type of blanket or mat to be used. 1. Erosion Control Blankets and TRMs shall be laid in the 2. Typical anchors and pattern/spacing shall be installed according 6" Min. direction of the flow, with the first course at the centerline 6 6 " " of channel, where applicable. In order for the mat to be in to the manufacturers instructions. w M Flo M contact with the soil, lay the mat loosely, avoiding stretching. i i n n . . 3. LONGITUDINAL SEAMS: The edges of the blanket or mat should overlap each other a minimum of 6 inches, with anchors 2. ANCHOR FOLD: The top of the mat should be folded under, catching the edges of both blankets. buried and secured with wood or other approved anchors placed 6 inches apart. The top edge of the mat should be buried in a slot 6 inches wide x 6 inches deep, anchored in the bottom of the slot, backfilled, and the mat folded over Maintenance: the top as shown in detail.

1. Torn or degraded product shall be repaired or replaced, unless 3. SPLICE SEAM: When splices are necessary, overlap end a such degradation is within the functional longevity specified by minimum of 12 inches in direction of water flow. Stagger the manufacturer. splice seams.

2. Edges or seams that are loose or frayed shall be secured. 4. CHECK SLOTS: Establish check slots transverse to slope every 30 feet. The slots should be 6 inches wide x 6 inches deep. The mat shall be cut to a length 12 inches beyond the slot. The top of the downstream mat shall be slotted in, secured r te en and buried similar to the edge anchor fold. The upstream mat c ap n rl o ve shall then cover the slot and be anchored as shown. " o 4 t . ke in an M bl " 8 5. EDGE ANCHORS: Lay outside edge of mat into trench at top of the slope and anchor.

6. TERMINUS: The bottom edge of the mat shall be anchored.

pe Slo

. S n lo i pe M

" 6 Splice Seam

Installation on Slopes

12" Min.

ow Fl Edge Anchor

A B C

Notes for Installation on Slopes: Splice Seam Critical Points: 1. Erosion Control Blankets and TRMs shall be laid in the direction of the slope. In order for blanket to be in contact A - Overlaps and seams; with the soil, lay blanket loosely, avoiding stretching. Trapezoidal Channel

2. ANCHOR SLOTS: The top of the blanket should be "slotted in" B - Projected water line; * at the top of the slope and anchored in place with anchors 6 inches apart. The slots should be 6 inches wide x 6 inches A deep with the blanket anchored in the bottom of the slot, C - Channel bottom / side slope vertices; then backfilled, tamped and seeded. Limits of Erosion B s e i Control Blanket r 3. SPLICE SEAM: When splices are necessary, overlap end a C a V minimum of 8 inches in direction of water flow. Stagger splice seams. * - Erosion Control Blanket or TRM 4. TERMINAL FOLD: The bottom edge of the blanket shall be may be omitted if the area turned under a minimum of 4 inches, then anchored in place is immediately covered by with anchors 9 inches apart. V Channel permanent slope protection (where directed by the plans) Installation in Channels

15' Min. AMERICAN PUBLIC WORKS ASSOCIATION

Partial Box Culvert Plan KANSAS CITY

Not to Scale METRO CHAPTER

Installation Around Culvert Slope STANDARD DRAWING EROSION CONTROL BLANKETS NUMBER ESC-02 Modified from 2015 Overland Park Standard Details ADOPTED: for Erosion and Sediment Control. AND TURF REINFORMENT MATS 10/24/2016 Filter fabric Material (**) Posts (*) at 4' Max. spacing 4' min length post at 4' max spacing Geotextile fabric 3' wide

Staples, plastic zip ties or other material approved by the field engineer, Notes: (50 lb tensile strength) located in top 8" Tire compaction zone 1. In order to contain water, the ends of the silt 2' Min. F LO W Backfilled trench fence must be turned uphill (Figure A).

Direction of Flow 2. Long perimeter runs of silt fence must be limited to 100'. Runs should be broken up into several For additional strength filter fabric smaller segments to minimize water concentrations material can be attached to woven wire fencing with min. wire gauge (Figure A). between 9 and 14 and max. mesh spacing of 6" which has been 3. Long slopes should be broken up with intermediate rows fastened to the post. 2' Min. of silt fence to slow runoff velocities. Post embedment Machine slice (See Note 6.) 4. Attach fabric to upstream side of post. 6" - 12" depth

5. Install posts a minimum of 2' into the ground. (*) POSTS (**) - Geotextile Fabric shall meet the requirements 6. Trenching will only be allowed for small or difficult of AASHTO M288 installation, where slicing machine cannot be reasonably - MIN, LENGTH 4' used. 3 3 - HARDWOOD 1 16" x 1 16"

5 5 - NO.2 SOUTHERN PINE 2 8" x 2 8"

- STEEL 1.33 LB/FT

Maintenance: SILT FENCE DETAILS

Not to Scale 1. Remove and dispose of sediment deposits when the deposit

1 approaches 3 the height of silt fence.

2. Repair as necessary to maintain function and structure.

18" Minimum

Install silt fence at the top of the slope to slow velocity and volume of water and 6' to 10' away from the toe to create a Silt fence post sediment storage area.

2 2 8 8 9 Silt Fence 9 F 0 lo F 8 l w o 9 Overlap filter fabric between posts w Silt Fence Flow 100' Maximum Runs (Typ.) 6' - 10'

8 7 0 9 8 9 t e t e

r Wrap filter fabric around and e t e S

r attach to the post with t 8

S staples or plastic zip ties 7 6 9 7 9 6 7 JOINING FENCE SECTIONS 9 Not to Scale

Street Street

Ends Turned Uphill (Typ) Incorrect Correct

AMERICAN PUBLIC WORKS ASSOCIATION Figure A SILT FENCE LAYOUT KANSAS CITY Not to Scale METRO CHAPTER

STANDARD DRAWING NUMBER ESC-03 SILT FENCE Modified from 2015 Overland Park Standard Details ADOPTED: for Erosion and Sediment Control. 10/24/2016 4' ( max. ) Stakes (typ.)

A Notes for Wattles and Biodegradable Log Slope Wattle or Biodegradable Log Protection:

Direction of Flow 1. The Slope barriers shall be placed along contour lines, with a short section turned upgrade at each end of the barrier. The maximum length of the slope barrier shall not exceed 250 feet, and the barrier ends need to be staggered. A 2. Install wattles and biodegradable logs per manufacturer's instructions.

3. Spacing of stakes per manufacturer's instructions with 4' max. spacing. Trenching per manufactures instructions. Length of stakes shall be a minimum of 2 times the diameter of the log with minimum of 24".

Section A-A Typical Elevation

WATTLES AND BIODEGRADABLE LOG

Notes for Mulch and Compost Filter Beam :

1. The sediment control berm shall be placed uncompacted in a windrow at locations shown on the plans or as 4 .0' directed by the engineer.

2. Parallel to the base of the slope, or around the perimeter of other affected areas, construct a 1 to 3 foot high by 2.5 to 3 foot wide berm (see Figure 1). For maximum water treatment ability or for steep slopes,

0 . construct a 1.5 to 3 foot high trapezoidal berm that is

3 a minimum of 4 feet wide at the base (see Figure 2). Berm -

' In extreme conditions, or where specified by the engineer,

' 5 .

0 1 a second berm shall be constructed at the top of the . Berm

3 slope. Engineer will specify berm requirements.

' 3. If berm is to be left as permanent or part of the 0 .

1 natural landscape, the compost berm may be seeded during application for permanent vegetation.

4. Do not use compost or wood mulch berms in any runoff channels or concentrated flow areas.

2.5' - 3.0' 5. Wood mulch shall consist of tree and shrub debris resulting from clearing and grubbing and shall be ground by the mechanical means such as a chipper, hammermill, tub grinder or other approved method. Mulch sizing varies with a maximum width of 2" and a Figure 1 Figure 2 maximum length of 10". (Perimeter Control) (Steep Slopes)

Maintenance for Mulch and Compost Filter Beam:

1. Berm shall be reshaped and material added as necessary to maintain function and dimensions.

2. Breaches in the berm shall be repaired promptly.

MULCH OR COMPOST FILTER BERMS

AMERICAN PUBLIC WORKS ASSOCIATION

KANSAS CITY METRO CHAPTER

WATTLES/BIODEGRADABLE LOG STANDARD DRAWING NUMBER ESC-04 AND Modified from 2015 Overland Park Standard Details ADOPTED: for Erosion and Sediment Control. MULCH/COMPOST FILTER BERM 10/24/2016 B TYPICAL PROFILE OF DIVERSION BEAM Not to Scale B n

i n a i r a t d n

a e c p

o 24' Min. l

o B s t

r o

d m t e

r i f

( f u T o

q r

n a e r u n 2:1 Slope or flatter r

s v t e a c r

e C s r h e i w t Flo ) d g 2:1 Slope or flatter

n d e A n L a 18" Min. b

Grade to provide required flow width and flow depth

Diversion Berm

Top of Slope Existing Ground

A a - Flow Width = 4' Min.

C b - Flow Depth = 70% Max. of berm height.

e Slope Drain op Sl

Toe of Slope

TYPICAL PROFILE OF DIVERSION BERM

Diversion Berm Rock Dissipator or other approved material

6" Metal, Plastic or Flexible Rubber Pipe

ries TYPICAL PLAN VIEW OF DIVERSION BERM Rock Dissipator or other Va AND SLOPE DRAIN approved material

Adjust length of Slope Drain to match height of slope as earthwork operations progress Notes for Diversion Berm:

1. Slope drains are optional, but may be required by the engineer if the berm is at the top of a steep slope.

2. Diversion berms must be installed as a first step in the land-disturbing activity and must be functional prior to upslope land disturbance. Notes for Slope Drain: Surface of Compacted Fill 2' Min. 3. The berm should be adequately compacted to prevent failure. Diversion Berm Transverse Berm 2' Min. 1. Slope Drain and Diversion Berm may be used Transverse Berm 4. Temporary or permanent seeding and mulch shall be applied on either project foreslopes or project backslopes. Slope Drain Pipe . 2 . x : ' a 1 n M i to the berm immediately following its construction. 2:1 M 1 ax M . . x 2 Ma :1 2. Discharge of Slope Drains shall be into stabilized ditch or Face of Slope 1 M '

: 1 2 ax 5. Place the berm so to minimize damages by construction area, or into Sediment Basin. . operations and traffic. . n i 3. Pipe shall be secured in place as approved by Engineer. 4' " 6 6. The berm must discharge to a temporary sediment trap or M Min. stabilized area.

7. All trees, brush, stumps, obstructions and other objectionable Section C-C Section B-B material shall be removed and disposed of so as not to interfere with the proper functioning of diversion. Maintenance:

8. The diversion shall be excavated or shaped to line, grade and TYPICAL PROFILE OF DIVERSION BERM WITH SLOPE DRAIN cross-section as required to meet the criteria specified herein, 1. Accumulation of any visible sediment at the inlet and free of irregularities which will impede flow. outlet shall be removed promptly.

9. Fills shall be compacted as needed to prevent unequal 2. Outlet conditions shall be repaired if scour is observed. settlement that would cause damage in the completed Leaking or damaged section of pipe shall be repaired AMERICAN PUBLIC WORKS ASSOCIATION diversion. Fill shall be composed of soil which is free from immediately. excessive organic debris, rocks or other objectionable materials. 3. Barriers directing water to the inlet shall be monitored for KANSAS CITY continuity and effectiveness. Maintenance: METRO CHAPTER

1. Berm shall be reshaped, compacted, and stabilized as STANDARD DRAWING necessary to maintain its function. DIVERSION BERMS AND NUMBER ESC-05 2. Breaches in the berm shall be repaired immediately. Modified from 2015 Overland Park Standard Details SLOPE DRAINS ADOPTED: for Erosion and Sediment Control. 10/24/2016 * Contractor shall field verify that Ponded Water Depth will not cause Existing Ground unintended flooding. 10' Typ.

Curb & Gutter Sediment

Proposed finished grade

10" Min. 24" Max.

Weep Hole

Flow Excavated area surrounding inlet Filter socks to be placed on all four sides. along curb as needed at approximately 10' interval Gravel 1 2" to 1" Dia. On Grade Curb Inlet Protection

See Detail A below

Filter sock is to have a tight curb contact with no gaps Curb & Gutter 2" x 10" (min). and extend approximately 6" Board beyond inlet opening.

Wrap silt fence around 2"X10" (min.) board & staple 4" - 6"

1 Gravel 2" to

1" dia. Notes: Top View Top of inlet

1. Immediately following inlet construction and prior to construction of curb and inlet throat, protect inlet opening Curb Line

by installing 2" X 10" (min.) board wrapped in silt fence. Pavement Structures shall have excavated storage area on all four Or turf A - A sides to allow settling of sediment (Early Stage Curb Inlet).

2. When inlet is completed and curb poured, filter socks or approved equal should be used (Late Stage Curb Inlet). Straw wattles are not approved for curb inlet use.

A 3. Contractor to field verify ponding water shall not create a traffic hazard. Board wraped Place gravel along in silt fence. the front and sides Height of filter sock should of inlet. not be above the top of the Front View inlet.

Sump Inlet Sediment Filter A Maintenance:

1. Remove deposited sediment from excavated storage areas when available storage has been reduced by 20%. Detail A 2. Remove deposited sediment from filter socks or similar when any accumulation of LATE STAGE CURB INLET sediment is visible. (After Pouring Curb and Inlet Throat) 3. Repair or replace as necessary to maintain function and integrity of installation. EARLY STAGE CURB INLET (Open Box and Prior to Pouring Curb and Inlet Throat) AMERICAN PUBLIC WORKS ASSOCIATION

KANSAS CITY METRO CHAPTER

STANDARD DRAWING NUMBER ESC-06 CURB INLET PROTECTION Modified from 2015 Overland Park Standard Details ADOPTED: for Erosion and Sediment Control. 10/24/2016 Wire Reinforced Silt Fence Top of silt fence below top (See Silt Fence Detail for * - Contractor shall field verify that Ponded Water Depth of downstream berm to Existing Ground Installation Requirements) will not cause excessive unintended flooding. prevent bypass

Ponded Water Depth (*)

Swale Flow

10' Stabilized Buffer Proposed consisting of vegetation or Gravel (Typical all sides) Finished Grade approved Erosion Control Product 1 2" to 1" Dia. 10" min 24" max

Section A-A

Not to Scale

Wire Reinforced Silt Fence Place biodegradable log, staked wattles or

w other approved sediment control device

o l in front of each inlet opening.

(Not to be placed in throat of inlet).

4' Max. A A Plan Centerline of Swale Not to Scale Top of inlet

CITY

S T R O E W RM SE 2' Min.

Excavated Area for Sediment Storage Final stabilized grade

Front View

Limits of Gravel LATE STAGE AREA INLET Excavation 1 " to 1" Dia. 2 (Area inlets at final grade and existing inlets) Notes: Maintenance:

1.Early Stage Area Inlet Sediment Barrier to be installed immediately after inlet or junction box is 1. Remove deposited sediment from excavated storage areas when constructed. available storage has been reduced by 20%.

2.Silt fence shall remain in place until excavated area 2. Remove deposited sediment from filter socks or similar when any Plan is removed and Late Stage Area Inlet is being installed. accumulation of sediment is visible.

Not to Scale 3.Backfill excavated area ONLY after final grading 3. Repair or replace as necessary to maintain function and integrity of the site. Stabilization of the site is to of installation. immediately follow.

4.Wire reinforced silt fence may be used in place of AMERICAN PUBLIC WORKS ASSOCIATION EARLY STAGE AREA INLET silt fence attached to wood frame. (All open boxes and inlets not at final grade) KANSAS CITY METRO CHAPTER

STANDARD DRAWING AREA INLET AND NUMBER ESC-07 Modified from 2015 Overland Park Standard Details JUNCTION BOX PROTECTION ADOPTED: for Erosion and Sediment Control. 10/24/2016 Natural Ground

1' W Top of Diversion Dike Coarse Aggregate d = 2" 1' 2' 50 Riprap Headwall

Original ground 1' Min. elevation Max. sediment depth at 20% volume of wet

storage area 1 2

: :

2 2 1 3' 1 Fl : ow : H Flow 1 2 Ho

Storage Capacity: . x

H a H O W 67 Cu. Yd. per Acre M

of drainage area '

4 Pipe Invert 1.5 0.5 2.0 d 10" Stone 50 24" Min. Areas to be disturbed 2.0 1.0 2.0 Original ground Stabilize area elevation 2.5 1.5 2.5 2" Coarse 10" Riprap between Aggregate berm and pipe 3.0 2.0 2.5 Geotextile 3.5 2.5 3.0 (Optional) Section A-A

4.0 3.0 3.0 Not to Scale d 10" Stone 50 4.5 3.5 4.0 (*) Cross Section of Outlet 5.0 4.0 4.5 Not to Scale

F l 10" Riprap Length in Feet = 6 x Drainage Area in AC. o w A A

Diversion Dike

a Stabilize Are e (24" Min.) rag Sto t en dim Se Flow

Pipe Invert

2" Coarse Aggregate w

o l

F Coarse Aggregate d = 2" 50

Excavated Area

Plan View Geotextile Notes for Sediment Trap at Culvert Opening: Not to Scale (Optional)

1. The inlet protection device shall be constructed in a Original ground manner that will facilitate clean-out and disposal of elevation trapped sediment and minimize interference with construction activities.

2. The inlet protection devices shall be constructed in such Notes for Sediment Trap: manner that any resultant ponding stormwater will not (*) Perspective View of Outlet cause excessive inconvenience or damage to adjacent Maintenance for Sediment Trap at Culvert Opening: 1. The area under the embankment shall be cleared, grubbed, Not to Scale areas or structures. and stripped of any vegetation and root mat. 1. Check sediment traps after periods of significant runoff. 3. Geometry of the design will be a horseshoe shape around 2. Fill material for the embankment shall be free of roots or the culvert inlet. 2. Remove sediment and restore the trap to its original dimensions when other woody vegetation, organic material, large stones, and sediment accumulates to 20% of the storage capacity. other objectionable material. The embankment should be 4. The toe of the riprap shall be no closer than 24" from compacted in 6-inch layers by traversing with construction (*) - The perspective view and cross section are the culvert opening to provide an acceptable emergency 3. Immediately repair any erosion damage to the embankment and outlet. equipment. schematic in nature. outlet for flows from larger storm events. Construction plans must provide specific site 4. Keep outlet and pool area free of all trash and other debris. 3. The earthen embankment shall be stabilized immediately construction arrangements. 5. Storage requirements equivalent to that of temporary after installation. sediment trap.

4. Construction operations shall be carried out to minimize 6. 67 C.Y./Acre wet storage below base of stone. erosion and water pollution.

Maintenance for Sediment Trap: 7. 67 C.Y./Acre dry storage from base of stone to top of 5. The structure shall be removed and the area stabilized when stone berm. the upslope drainage area has been stabilized. 1. Check sediment traps after periods of significant runoff. 6. All cut and fill slopes shall be 2H : 1V or flatter, except AMERICAN PUBLIC WORKS ASSOCIATION for excavated, wet storage areas which may be at a 2. Remove sediment and restore the trap to its original dimensions when maximum 1H : 1V grade. sediment accumulates to 20% of the storage capacity.

3. Immediately repair any erosion damage to the embankment and outlet. KANSAS CITY METRO CHAPTER SEDIMENT TRAP 4. Keep outlet and pool area free of all trash and other debris. SEDIMENT TRAP AT CULVERT OPENING

STANDARD DRAWING NUMBER ESC-08 SEDIMENT TRAPS Modified from 2015 Overland Park Standard Details ADOPTED: for Erosion and Sediment Control. 10/24/2016 Notes for Silt Fence Ditch Check:

1. Stakes shall be 4' (min.) long and one of Shoulder Typical Foreslope Standard or Special Ditch Typical Backslope

the following materials:

3 3 a. Hardwood - 1 16" x 1 16"; 4' max. (typ.) 4' max. (typ.) 4' max. (typ.)

5 5 b. Southern Pine (No. 2) - 2 8" x 2 8"; Set end stakes with top c. Steel U, T, L, or C Section - .95 lbs. per 1'-0"; of stake 12'' above

finish grade (typ.) ) .

d. Synthetic - same strength as wood stakes. p y t es ( ri B va 6 ' or : ' 2. Cross pieces shall be of same material as stakes. 1 or v 4:1 aries 4 3. Attach fence fabric securely on 6" centers (max.).

4. Use of high flow material is acceptable.

5. Refer to plan sheets to estimate the length of silt ) . ' p y 6" minimum 2

Silt Fence Fabric t

fence required. ( slicing depth 6. Use support fencing when tributary area is greater

than 2.4 acres or when ditch gradient is greater

than 2 percent. Soil or Gravel B 7. Silt fence sliced in to a 6" minimum depth. Fold Silt Fence Backfill in Anchor Fabric to fit slopes. Trench. 8. Elevation at tie in points shall be a minimum of (typ. each side) 4" higher than the center. Flowline of Ditch

Alternative Type

Stakes shall be set at an 2' minimum depth Ditch Check Spacing

Silt Fence Fabric TYPICAL ELEVATION Ditch Centerline Spacing Interval

Geotextile fabric Slope ( % ) (Feet) Soil or Gravel Backfill 3' wide Plastic zip ties, or other material in Anchor Trench. 4' min. length post at approved by the field engineer, 1.0 200 Direction 4' max. spacing Tire compaction zone (50 lb. tensile strength) located in top 8". of Flow 2.0 100 Plastic zip ties, or other material approved by the field engineer 3.0 65 Direction (50 lb. tensile strength) located 6'' of Flow in top 8". 4.0 50

5.0 40

Stake 6.0 33 Wire Staples: 2' min. 6'' long x 1'' wide post embedment Note: Use this spacing for all (min.) @ 3' o/c Machine slice except Rock Ditch Checks. 6" - 12" depth 6''

SECTION B-B SILT FENCE DITCH CHECK

NO SCALE

Notes for Wattles and Biodegradable Log Ditch Check: Direction of Flow Staples (typ.) 1. Use as many biodegradable log sections as necessary to ensure water does not flow around end of ditch check.

2. Overlap sections a minimum of 18" Wattle or Biodegradable Log

3. Stakes shall be per manufacturer's instructions. Length of stakes shall be a minimum of 2 times Direction of Flow the diameter of the log or 24" minimum.

4. Use Erosion Control (Class 1) (Type C) as the downstream apron when directed by the Engineer.

5. Use 9" diameter logs when used with Erosion Control (Class 2) (Any Type) channel lining. 4' ( max. ) Downstream Apron Trenching per manufactures instructions. PLAN Smaller diameter logs may be used with Erosion (Optional) Control (Class 2) (Any Type) channel lining as

) directed by the Engineer. SECTION B - B

. n i m

(

' ' 4 4' ( max. ) Stakes (typ.)

B AMERICAN PUBLIC WORKS ASSOCIATION

KANSAS CITY

B METRO CHAPTER WATTLES OR BIODEGRADABLE LOG DITCH CHECKS OR Filter Sock Ditch Check SILT FENCE AND WATTLE/ STANDARD DRAWING NO SCALE NUMBER ESC-09 TYPICAL ELEVATION BIODEGRADABLE LOG Modified from Kansas Department of Transportation Standard ADOPTED: Details for Erosion Control and Sediment Control. DITCH CHECKS 10/24/2016 2'

3" to 6" aggregate Temporary Rock Ditch Check 2: 1 FLOW Spacing Elevation at end Points "A" must be minimum 6" higher than elevation of flow line at point "B" 1 : 2 Ditch Centerline Spacing Interval Slope ( % ) (Feet)

5.0 60 A A 6.0 50 B Type I 7.0 43 (2 Acres or less of Drainage Area) 8.0 36 1' Min. Not to Scale 3' Max. 9.0 33

10.0 29 3" to 6" aggregate upstream Note: Use this spacing only for Rock Ditch Checks. 12" riprap downstream B

2 :1 FLOW Front View FLOW

1 Not to Scale : 2

Type II (2-10 Acres of Drainage Area)

Not to Scale Rock keyed in 6 inch trench (typical for all locations)

ROCK DITCH CHECK

Place downstream structure such that Point "B" is approximately level with the toe elevation of the upstream structure

Spacing Between Check Dams (all types)

Not to Scale

Notes:

1. Rock check dams shall be used only for drainage areas less that 10 acres unless approved by the City Engineer.

2. Use rock checks only in situations where the ditch slope exceeds 6%.

Maintenance: AMERICAN PUBLIC WORKS ASSOCIATION

1. Remove and dispose of sediment deposits when the deposit 1 KANSAS CITY approaches 2 the height of the ditch check. METRO CHAPTER 2. Replace and reshape as necessary to maintain function and integrity of installation. STANDARD DRAWING NUMBER ESC-10 ROCK DITCH CHECKS Modified from 2015 Overland Park Standard Details ADOPTED: for Erosion and Sediment Control. 10/24/2016 Emergency spillway control section- 20 ft. Sediment Basin Design Summary (**) min. length flat section Channel lining material to Design Item Basin #1 Basin #2 Units Notes withstand 4% design storm flow (extend to edge of disturbance)

Emergency spillway should not be Site Data: constructed over fill material Tributary Drainage Area to Pond Acres

cfs Embankment stabilized immediately following the cfs construction of basin

Pond Data: IN F L O Minimum Sediment Storage Volume cu yd 134 cy/acre required minimum W

e Provided Sediment Storage Volume cu yd

r Bottom Elevation Ft

Sediment Cleanout Elevation Ft

Top of Riser Elevation Ft Top of dry storage volume Emergency Spillway Elevation Ft at or above Q-2 elevation. 1.0 ft min above principal spillway

Top of Dam Elevation Ft 1.0 ft min above Q-25 elevation

Basin Shape Data:

A = Area at Normal Pool SF

L = Length of Flow Path Ft

We = Effective Width = A/L Ft Stabilized outlet Length to Width Ratio = L/We (extend to edge of disturbance) w e i r Principal Spillway Data:

Riser Pipe dia in 15" min. Size for 2 year flow minimum W O FL IN Barrel Pipe dia in 15" min. Size for 2 year flow minimum Concrete Base size for Riser Pipe CY Size to prevent flotation. 1.25 safety factor required

Skimmer Size Designer to provide specific details and calculations per application Primary Spillway w/skimmer Provide baffles. to dewater in 48 to 72 hours (located for accessibility in For baffle options see baffle details event of blockage) Emergency Spillway Data: on Sht. ESC-12 Design Depth in Spillway ft

Design Velocity in Spillway ft/sec

Lining Material Designer to provide specific details and calculations per application

Plan View (*) (**) - Required on all Sediment Basin Plan Sheets Not to Scale

Sediment Basin Notes:

1. Interior baffles shall be provided to reduce short-circuiting of the basin. See Sht. ESC-12 for approved baffle options.

Min. Elevation of Emergency spillway. 2. Emergency spillways to be located in a non-fill location when feasible and shall be lined with a non-erodible material 8' min. (Spillway designed to pass 4% storm) 50% storm design Elevation 4% storm such as Riprap or Turf Reinforcement Mat. design Elevation Settlement Zone and (not to overtop emergency spillway) Embankment stabilized with 3. When directed, sediment basins shall be fenced using construction fence or other material for safety reasons and Sediment Storage vegatation immediately include warning signs, reading: "Danger - KEEP OUT". (134 CY/Acre min.) Trash rack following the construction of

1' min. basin Principal riser w/ skimmer Stormwater storage Freeboard 3 Maintenance: :1 (see skimmer detail Sht. ESC-12) m a x. 1. Check temporary sediment basins after periods of significant runoff.

x. a 3 m 15' max. 2. Remove sediment and restore the basin to its original dimensions when sediment accumulates to 20% of the storage : m 1 1' min. 1 a : capacity. x. 3

3. Immediately repair any erosion damage to the embankment and outlets.

Inlet for storm 4. Repair and/or replace baffles as necessary to maintain function and integrity of installation. water system 1' min 5. Keep outlet, skimmer and pool area free of all trash and other debris. Principal spillway Stabilized inlet conduit Stabilized Baffles Compacted Min. 2 outlet fill AMERICAN PUBLIC WORKS ASSOCIATION Anti-seep collars Concrete block - sized by (See corrugated metal anti-seep collar Engineer to prevent floatation detail on sht. ESC-12) (*) - The plan and cross section are schematic in nature. KANSAS CITY Construction plans must provide specific site Low Permeability Backfill construction arrangements. METRO CHAPTER along pipe (Typ.) STANDARD DRAWING Cross Section (*) NUMBER ESC-11 SEDIMENT BASIN Not to Scale Modified from 2015 Overland Park Standard Details ADOPTED: for Erosion and Sediment Control. 10/24/2016 Trash Rack

Floating Skimmer Vent Screen accessible

Pull cord secured to bank through door for skimmer maintenance To increase flow path construct 1' deep weirs at alternating ends of each baffle. 15" min. Weir width should be adjusted for expected flow Stable impervious rock dam dia. CMP Schedule 40 PVC Pipe (min. 4'). riser (Dia. varies)

Dewatering Red painted Oriface 12" cleanout level min. length, 2' dia. varies Float

Watertight Joints 3"-6" clean aggregate Flexible tubing dia. Outlet pipe Barrel pipe longer than shown varies 2' max.

"Fernco" Flexible pipe Option A - Rock with Weir style coupling Outlet end: connection to outlet pipe or riser

Concrete Ballast

PRINCIPAL SPILLWAY DETAIL SKIMMER DETAIL (Typ.) *

* Designer to provide specific details per application (e.g. pipe sizes, screen sizes, perforation, etc.) as required.

Coir fiber draped Drape baffle material over support Maximum 4' between posts over support wire wire or rope and secure with plastic ties at posts and on wire every 12" Install collar with Collar to be same gauge as 12" Min. 12" corrugations vertical the pipe with which it is min. used

Continuous 1 Band of 2" x 2" slotted holes Weld Helical 3 Baffle material shall be secured to the for 8" diameter bolts Weld both sides. pipe bottom and sides of basin by trenching Corrugated metal sheet Support wire or rope 2" or using 12" landscape staples Steel Post 2" O.D. of CMP welded to center of band to prevent sagging B 2"

Band Metal collar to be SECTION B-B welded to center of Slotted Holes Continuous helical pipe band Weld at 8" C.C. Staple or trench baffle material Landscape Staple 2'-0" Size and spacing of slotted openings shall be Coir fiber or similar material into bottom and sides of basin B the same as shown for CM collar. PARTIAL ELEVATION Use rods and lugs to clamp bands securely to pipe.

1 1 Weld 1 8" x 1 8" angles to collar Option B - Coir Fiber Material

1 or bend 90° angle 1 8" wide as shown Anti-Seepage Collar Notes:

1 1. Connections between the anti-seepage collar 8. The lap between the two half sections and 1 8" Saturated zone and the barrel must be watertight. between the pipe and connecting band shall be caulked with asphalt mastic at the time of BAFFLE DETAILS 1 1 8" 2. P = projection distance. Sized as required installation. to achieve at least a 10% increase in seepage 14xP Not to Scale length. 9. Each collar shall be furnished with two (2) 1 " 2" P 2 diameter rods with standard tank lugs for 3. 14xP = Max. spacing between collars. connecting the collars to the pipe.

4. Collars shall generally be placed in the middle 10. For bands and collars, modification of the Sheet metal collar shall be cut to third of the embankment, and within the details shown may be used providing equal Rod and Lug fit corrugations of helical band and saturated zone. water tightness is maintained and detailed welded with continuous weld drawings are Submitted and approved by the 5. All materials to be in accordance with Engineer prior to delivery. ISOMETRIC VIEW construction material specifications.

11. Two other types of anti-seep collars are: AMERICAN PUBLIC WORKS ASSOCIATION 6. When specified on the plans, coating of ANTI-SEEPAGE COLLAR LOCATIONS collars shall be in accordance with a. Corrugated metal, similar to above, construction material specifications. except shop welded to a 4 ft. section of KANSAS CITY the pipe and connected to the pipe with 7. Unassembled collars shall be marked by connecting bands. painting or tagging to identify matching pairs. METRO CHAPTER CORRUGATED METAL b. Concrete, 6 inches thick, formed around the pipe with #3 rebar spaced 15". STANDARD DRAWING ANTI-SEEPAGE COLLAR DETAIL NUMBER ESC-12 Not to Scale SEDIMENT BASIN - DETAILS Modified from 2015 Overland Park Standard Details ADOPTED: for Erosion and Sediment Control. 10/24/2016 Depth Min. 12" 2" Min. Notes for Temporary Stream Crossing: Clean Aggregate 1. Clearing and excavation of the stream bed and banks shall be Sediment Control BMP Sediment Control BMP kept to a minimum. (*) (*) Capacity of Pipe Culverts together = Flow 2. Place one pipe, buried 6" into the stream bottom, at the Flow lowest point of the channel to allow the passage of aquatic organisms. Additional pipes shall be placed along the remainder of the stream channel bottom such that ordinary high water (OHW) flows designated in the Contract Documents shall flow through the pipes without overtopping the crossing. (See Specification for more information).

3. Geotextile shall be placed on the streambed and streambanks prior to placement of the pipe culvert and aggregate. The geotextile shall cover the streambed and extend a minimum of 6 inches and a maximum of 1 foot beyond the end of culvert and bedding material. Filter cloth reduces settlement and improves crossing stability.

Geotextile 4. The culvert shall extend a minimum of 1 foot beyond the upstream and downstream toe of the aggregate placed around the culvert. In no case shall the culvert exceed 40 feet in length.

5. The culvert shall be covered with a minimum of 1 foot of aggregate. If multiple culverts are used, they shall be separated by at least 12" ELEVATION of compacted aggregate fill.

6. As soon as crossing no longer needed, all structures including culverts, bedding and geotextile materials shall be removed. Removal of the Top of Bank Top of Bank structure and clean-up of the area shall be accomplished without construction equipment working in the channel. Maintenance: Stream Channel

7. Upon removal of the structure, the stream and banks shall immediately 1. Repair stream bank erosion by stabilizing with erosion control be shaped to its original cross-section and properly stabilized. Take BMPs such as erosion control blankets. care to minimize the amount of sediment lost into the stream.

Sediment Control BMP Sediment Control BMP 2. For in-stream degradation, armor the culvert outlet(s) with (*) (*) riprap to dissipate energy. * - Install as shown on plans 3. If sediment or debris is accumulating upstream of the crossing, remove as needed to maintain the functionality of the crossing. PLAN VIEW 4. If a temporary crossing is requiring excessive maintenance, replacement with a larger culvert or alternate design may be TEMPORARY STREAM CROSSING

necessary.

o w

Sediment Control Place Riprap at transition Notes for Temporary Diversion Channel:

1. The diversion channel crossing must be operational before work is done in the stream. Construction will be performed in Flow Barrier See Stream Crossing the dry. (see Note 8) detail w lo F 2. Minimum width of bottom shall be 6 feet or equal to bottom width of existing streambed, whichever is less.

3. Maximum steepness of side slopes shall be 2H:1V. Depth and grade may be variable, dependent on site conditions, but shal be sufficient to ensure continuous flow of water in diversion.

4. Channel must be lined with riprap or turf reinforcement mat depending on the expected velocity and shear stress in the channel.

5. Stream diversion liners shall be secured at the upstream and w lo downstream sides with non-erodible weights such as riprap. F d e These weights shall allow normal flow of the stream. Soil shall B not be mixed with stream diversion weights. Weights may also m a e tr be needed along the diversion's length to secure liner. S l Channel Lining a in ig (see Note 5) 6. Stream diversion liners shall be entrenched at the top of r O slopes along with a sediment control BMP.

7. Non-erodible materials such as riprap, Jersey barriers. sand bags, plywood, or sheet piling shall be used as flow barriers to divert the stream away from it's original channel and F l o prevent or reduce water backup into the construction area. w

8. Stream should be re-diverted only after backfilling and Flow Barrier re-stabilization of original streambed and banks is completed. AMERICAN PUBLIC WORKS ASSOCIATION (see Note 8) KANSAS CITY Place Riprap at transition METRO CHAPTER

F STANDARD DRAWING l o w STREAM CROSSINGS AND NUMBER ESC-13 STREAM DIVERSION CHANNEL Modified from 2015 Overland Park Standard Details DIVERSION CHANNELS ADOPTED: for Erosion and Sediment Control. 10/24/2016 B

A A A A

Flow Flow Apron Width Apron Width

B Plan View

Not to Scale Plan View

Not to Scale

Apron Length

Flow Flow

Riprap Depth Riprap Depth

Channel Grade No Overfall No Overfall

Toe Wall (**)

Section A-A Section A-A

Not to Scale Not to Scale

OUTLET PROTECTION WITH END SECTION

Notes:

1. Rock all sides steeper than 3:1.

2. Stabilize all disturbed areas downstream of outlet to the limits of disturbance.

3. Alternative outlet protection and slope stabilization measures may be used with approval by the Engineer.

Apron Width 4. Install riprap apron so that it is no higher than flowline of pipe.

5. Reference APWA Specification 2650 for rock type, size, and placement. Section B-B Not to Scale AMERICAN PUBLIC WORKS ASSOCIATION

KANSAS CITY

OUTLET PROTECTION W/O END SECTION METRO CHAPTER

STANDARD DRAWING NUMBER ESC-14 OUTLET PROTECTION Modified from 2015 Overland Park Standard Details ADOPTED: for Erosion and Sediment Control. 10/24/2016