Re: Notice of Intent for Remediation General Permit for MBTA

Home , Massachusetts Bay

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II. Suggested Format for the Remediation General Permit Notice of Intent (NOI)

A. General site information:

1. Name of site: Site address:

Street:

City: State: Zip:

2. Site owner Contact Person:

Telephone: Email: Mailing address:

Street: Owner is (check one): □ Federal □ State/Tribal □ Private City: State: Zip: □ Other; if so, specify:

3. Site operator, if different than owner Contact Person:

Telephone: Email:

Mailing address:

Street:

City: State: Zip: 4. NPDES permit number assigned by EPA: 5. Other regulatory program(s) that apply to the site (check all that apply):

□ MA Chapter 21e; list RTN(s): □ CERCLA

□ UIC Program NPDES permit is (check all that apply: □ RGP □ DGP □ CGP □ NH Groundwater Management Permit or □ POTW Pretreatment □ MSGP □ Individual NPDES permit □ Other; if so, specify: Groundwater Release Detection Permit: □ CWA Section 404

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B. Receiving water information: 1. Name of receiving water(s): Waterbody identification of receiving water(s): Classification of receiving water(s):

Receiving water is (check any that apply): □ Outstanding Resource Water □ Ocean Sanctuary □ territorial sea □ Wild and Scenic River

2. Has the operator attached a location map in accordance with the instructions in B, above? (check one): □ Yes □ No Are sensitive receptors present near the site? (check one): □ Yes □ No If yes, specify:

3. Indicate if the receiving water(s) is listed in the State’s Integrated List of Waters (i.e., CWA Section 303(d)). Include which designated uses are impaired, and any pollutants indicated. Also, indicate if a final TMDL is available for any of the indicated pollutants. For more information, contact the appropriate State as noted in Part 4.6 of the RGP. 4. Indicate the seven day-ten-year low flow (7Q10) of the receiving water determined in accordance with the instructions in Appendix V for sites located in Massachusetts and Appendix VI for sites located in New Hampshire. 5. Indicate the requested dilution factor for the calculation of water quality-based effluent limitations (WQBELs) determined in accordance with the instructions in Appendix V for sites in Massachusetts and Appendix VI for sites in New Hampshire. 6. Has the operator received confirmation from the appropriate State for the 7Q10and dilution factor indicated? (check one): □ Yes □ No If yes, indicate date confirmation received: 7. Has the operator attached a summary of receiving water sampling results as required in Part 4.2 of the RGP in accordance with the instruction in Appendix VIII? (check one): □ Yes □ No

C. Source water information: 1. Source water(s) is (check any that apply):

□ Contaminated groundwater □ Contaminated surface water □ The receiving water □ Potable water; if so, indicate municipality or origin: Has the operator attached a summary of influent Has the operator attached a summary of influent □ A surface water other sampling results as required in Part 4.2 of the RGP sampling results as required in Part 4.2 of the than the receiving water; if in accordance with the instruction in Appendix RGP in accordance with the instruction in so, indicate waterbody: □ Other; if so, specify: VIII? (check one): Appendix VIII? (check one): □ Yes □ No □ Yes □ No MAG910000 Appendix IV – Part 1 – NOI NHG910000 Page 16 of 24

2. Source water contaminants: a. For source waters that are contaminated groundwater or contaminated b. For a source water that is a surface water other than the receiving water, potable water surface water, indicate are any contaminants present that are not included in or other, indicate any contaminants present at the maximum concentration in accordance the RGP? (check one): □ Yes □ No If yes, indicate the contaminant(s) and with the instructions in Appendix VIII? (check one): □ Yes □ No the maximum concentration present in accordance with the instructions in Appendix VIII. 3. Has the source water been previously chlorinated or otherwise contains residual chlorine? (check one): □ Yes □ No

D. Discharge information 1.The discharge(s) is a(n) (check any that apply): □ Existing discharge □ New discharge □ New source Outfall(s): Outfall location(s): (Latitude, Longitude)

Discharges enter the receiving water(s) via (check any that apply): □ Direct discharge to the receiving water □ Indirect discharge, if so, specify:

□ A private storm sewer system □ A municipal storm sewer system If the discharge enters the receiving water via a private or municipal storm sewer system: Has notification been provided to the owner of this system? (check one): □ Yes □ No Has the operator has received permission from the owner to use such system for discharges? (check one): □ Yes □ No, if so, explain, with an estimated timeframe for obtaining permission: Has the operator attached a summary of any additional requirements the owner of this system has specified? (check one): □ Yes □ No

Provide the expected start and end dates of discharge(s) (month/year):

Indicate if the discharge is expected to occur over a duration of: □ less than 12 months □ 12 months or more □ is an emergency discharge Has the operator attached a site plan in accordance with the instructions in D, above? (check one): □ Yes □ No

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2. Activity Category: (check all that apply) 3. Contamination Type Category: (check all that apply)

a. If Activity Category I or II: (check all that apply)

□ A. Inorganics □ B. Non-Halogenated Volatile Organic Compounds □ C. Halogenated Volatile Organic Compounds □ D. Non-Halogenated Semi-Volatile Organic Compounds □ E. Halogenated Semi-Volatile Organic Compounds □ F. Fuels Parameters

□ I – Petroleum-Related Site Remediation □ II – Non-Petroleum-Related Site Remediation b. If Activity Category III, IV, V, VI, VII or VIII: (check either G or H) □ III – Contaminated Site Dewatering □ G. Sites with Known □ H. Sites with Unknown Contamination □ IV – Dewatering of Pipelines and Tanks Contamination □ V – Aquifer Pump Testing c. If Category III-G, IV-G, V-G, VI-G, □ VI – Well Development/Rehabilitation VII-G or VIII-G: (check all that apply) □ VII – Collection Structure Dewatering/Remediation □ VIII – Dredge-Related Dewatering □ A. Inorganics □ B. Non-Halogenated Volatile Organic Compounds d. If Category III-H, IV-H, V-H, VI-H, VII-H or □ C. Halogenated Volatile Organic VIII-H Contamination Type Categories A through Compounds F apply □ D. Non-Halogenated Semi-Volatile Organic Compounds □ E. Halogenated Semi-Volatile Organic Compounds □ F. Fuels Parameters

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4. Influent and Effluent Characteristics Known Known Influent Effluent Limitations Test Detection or or # of Parameter method limit Daily Daily believed believed samples (#) (µg/l) maximum average TBEL WQBEL absent present (µg/l) (µg/l)

A. Inorganics Ammonia Report mg/L --- Chloride Report µg/l --- Total Residual Chlorine 0.2 mg/L Total Suspended Solids 30 mg/L Antimony 206 µg/L Arsenic 104 µg/L Cadmium 10.2 µg/L Chromium III 323 µg/L Chromium VI 323 µg/L Copper 242 µg/L Iron 5,000 µg/L Lead 160 µg/L Mercury 0.739 µg/L Nickel 1,450 µg/L Selenium 235.8 µg/L Silver 35.1 µg/L Zinc 420 µg/L Cyanide 178 mg/L

B. Non-Halogenated VOCs Total BTEX 100 µg/L --- Benzene 5.0 µg/L --- 1,4 Dioxane 200 µg/L --- Acetone 7.97 mg/L --- Phenol 1,080 µg/L MAG910000 Appendix IV – Part 1 – NOI NHG910000 Page 19 of 24

Known Known Influent Effluent Limitations Test Detection or or # of Parameter method limit Daily Daily believed believed samples (#) (µg/l) maximum average TBEL WQBEL absent present (µg/l) (µg/l)

C. Halogenated VOCs Carbon Tetrachloride 4.4 µg/L 1,2 Dichlorobenzene 600 µg/L --- 1,3 Dichlorobenzene 320 µg/L --- 1,4 Dichlorobenzene 5.0 µg/L --- Total dichlorobenzene 763 µg/L in NH --- 1,1 Dichloroethane 70 µg/L --- 1,2 Dichloroethane 5.0 µg/L --- 1,1 Dichloroethylene 3.2 µg/L --- Ethylene Dibromide 0.05 µg/L --- Methylene Chloride 4.6 µg/L --- 1,1,1 Trichloroethane 200 µg/L --- 1,1,2 Trichloroethane 5.0 µg/L --- Trichloroethylene 5.0 µg/L --- Tetrachloroethylene 5.0 µg/L cis-1,2 Dichloroethylene 70 µg/L --- Vinyl Chloride 2.0 µg/L ---

D. Non-Halogenated SVOCs Total Phthalates 190 µg/L Diethylhexyl phthalate 101 µg/L Total Group I PAHs 1.0 µg/L --- Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(k)fluoranthene As Total PAHs Chrysene Dibenzo(a,h)anthracene Indeno(1,2,3-cd)pyrene MAG910000 Appendix IV – Part 1 – NOI NHG910000 Page 20 of 24

Known Known Influent Effluent Limitations Test Detection or or # of Parameter method limit Daily Daily believed believed samples (#) (µg/l) maximum average TBEL WQBEL absent present (µg/l) (µg/l) Total Group II PAHs 100 µg/L --- Naphthalene 20 µg/L ---

E. Halogenated SVOCs Total PCBs 0.000064 µg/L --- Pentachlorophenol 1.0 µg/L ---

F. Fuels Parameters Total Petroleum 5.0 mg/L --- Hydrocarbons Ethanol Report mg/L --- Methyl-tert-Butyl Ether 70 µg/L 120 µg/L in MA tert-Butyl Alcohol --- 40 µg/L in NH 90 µg/L in MA tert-Amyl Methyl Ether --- 140 µg/L in NH

Other (i.e., pH, temperature, hardness, salinity, LC50, additional pollutants present); if so, specify:

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E. Treatment system information

1. Indicate the type(s) of treatment that will be applied to effluent prior to discharge: (check all that apply)

□ Adsorption/Absorption □ Advanced Oxidation Processes □ Air Stripping □ Granulated Activated Carbon (“GAC”)/Liquid Phase Carbon Adsorption □ Ion Exchange □ Precipitation/Coagulation/Flocculation □ Separation/Filtration □ Other; if so, specify:

2. Provide a written description of all treatment system(s) or processes that will be applied to the effluent prior to discharge.

Identify each major treatment component (check any that apply): □ Fractionation tanks□ Equalization tank □ Oil/water separator □ Mechanical filter □ Media filter □ Chemical feed tank □ Air stripping unit □ Bag filter □ Other; if so, specify:

Indicate if either of the following will occur (check any that apply): □ Chlorination □ De-chlorination

3. Provide the design flow capacity in gallons per minute (gpm) of the most limiting component.

Indicate the most limiting component:

Is use of a flow meter feasible? (check one): □ Yes □ No, if so, provide justification:

Provide the proposed maximum effluent flow in gpm.

Provide the average effluent flow in gpm.

If Activity Category IV applies, indicate the estimated total volume of water that will be discharged:

4. Has the operator attached a schematic of flow in accordance with the instructions in E, above? (check one): □ Yes □ No

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F. Chemical and additive information 1. Indicate the type(s) of chemical or additive that will be applied to effluent prior to discharge or that may otherwise be present in the discharge(s): (check all that apply)

□ Algaecides/biocides □ Antifoams □ Coagulants □ Corrosion/scale inhibitors □ Disinfectants □ Flocculants □ Neutralizing agents □ Oxidants □ Oxygen □ scavengers □ pH conditioners □ Bioremedial agents, including microbes □ Chlorine or chemicals containing chlorine □ Other; if so, specify:

2. Provide the following information for each chemical/additive, using attachments, if necessary:

a. Product name, chemical formula, and manufacturer of the chemical/additive; b. Purpose or use of the chemical/additive or remedial agent; c. Material Safety Data Sheet (MSDS) and Chemical Abstracts Service (CAS) Registry number for each chemical/additive; d. The frequency (hourly, daily, etc.), duration (hours, days), quantity (maximum and average), and method of application for the chemical/additive; e. Any material compatibility risks for storage and/or use including the control measures used to minimize such risks; and f. If available, the vendor's reported aquatic toxicity (NOAEL and/or LC50 in percent for aquatic organism(s)).

3. Has the operator attached an explanation which demonstrates that the addition of such chemicals/additives may be authorized under this general permit in accordance with the instructions in F, above? (check one): □ Yes □ No; if no, has the operator attached data that demonstrates each of the 126 priority pollutants in CWA Section 307(a) and 40 CFR Part 423.15(j)(1) are non-detect in discharges with the addition of the proposed chemical/additive? (check one): □ Yes □ No

G. Endangered Species Act eligibility determination

1. Indicate under which criterion the discharge(s) is eligible for coverage under this general permit: □ FWS Criterion A: No endangered or threatened species or critical habitat are in proximity to the discharges or related activities or come in contact with the “action area”. □ FWS Criterion B: Formal or informal consultation with the FWS under section 7 of the ESA resulted in either a no jeopardy opinion (formal consultation) or a written concurrence by FWS on a finding that the discharges and related activities are “not likely to adversely affect” listed species or critical habitat (informal consultation). Has the operator completed consultation with FWS? (check one): □ Yes □ No; if no, is consultation underway? (check one): □ Yes □ No □ FWS Criterion C: Using the best scientific and commercial data available, the effect of the discharges and related activities on listed species and critical habitat have been evaluated. Based on those evaluations, a determination is made by EPA, or by the operator and affirmed by EPA, that the discharges and related activities will have “no effect” on any federally threatened or endangered listed species or designated critical habitat under the jurisdiction of the FWS. This determination was made by: (check one) □ the operator □ EPA □ Other; if so, specify: MAG910000 Appendix IV – Part 1 – NOI NHG910000 Page 23 of 24

□ NMFS Criterion: A determination made by EPA is affirmed by the operator that the discharges and related activities will have “no effect” or are “not likely to adversely affect” any federally threatened or endangered listed species or critical habitat under the jurisdiction of NMFS and will not result in any take of listed species. Has the operator previously completed consultation with NMFS? (check one): □ Yes □ No 2. Has the operator attached supporting documentation of ESA eligibility in accordance with the instructions in Appendix I, and G, above? (check one): □ Yes □ No

Does the supporting documentation include any written concurrence or finding provided by the Services? (check one): □ Yes □ No; if yes, attach.

H. National Historic Preservation Act eligibility determination 1. Indicate under which criterion the discharge(s) is eligible for coverage under this general permit: □ Criterion A: No historic properties are present. The discharges and discharge-related activities (e.g., BMPs) do not have the potential to cause effects on historic properties. □ Criterion B: Historic properties are present. Discharges and discharge related activities do not have the potential to cause effects on historic properties. □ Criterion C: Historic properties are present. The discharges and discharge-related activities have the potential to have an effect or will have an adverse effect on historic properties. 2. Has the operator attached supporting documentation of NHPA eligibility in accordance with the instructions in H, above? (check one): □ Yes □ No

Does the supporting documentation include any written agreement with the State Historic Preservation Officer (SHPO), Tribal Historic Preservation Officer (TPHO), or other tribal representative that outlines measures the operator will carry out to mitigate or prevent any adverse effects on historic properties? (check one): □ Yes □ No

I. Supplemental information

Describe any supplemental information being provided with the NOI. Include attachments if required or otherwise necessary.

Has the operator attached data, including any laboratory case narrative and chain of custody used to support the application? (check one): □ Yes □ No Has the operator attached the certification requirement for the Best Management Practices Plan (BMPP)? (check one): □ Yes □ No DocuSign Envelope ID: F80D822B-01C7-495F-A9CC-0D1270384E5F

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J. Certification requirement

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 have no personal knowledge that the information submitted is other than 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.

BMPP certification statement:

Notification provided to the appropriate State, including a copy of this NOI, if required. Check one: Yes □ No □

Notification provided to the municipality in which the discharge is located, including a copy of this NOI, if requested. Check one: Yes □ No □

Notification provided to the owner of a private or municipal storm sewer system, if such system is used for site Check one: Yes □ No □ NA □ discharges, including a copy of this NOI, if requested. Permission obtained from the owner of a private or municipal storm sewer system, if such system is used for site discharges. If yes, attach additional conditions. If no, attach explanation and timeframe for obtaining permission. Check one: Yes □ No □ NA □ Notification provided to the owner/operator of the area associated with activities covered by an additional discharge permit(s). Additional discharge permit is (check one): □ RGP □ DGP □ CGP □ MSGP □ Individual NPDES permit Check one: Yes □ No □ NA □ □ Other; if so, specify:

Signature: Date: 11/12/2020

Print Name and Title: Keith Anderson Vice President and General Manager

Massachusetts Bay Transportation Authority – Rehabilitation of the Merrimack River Bridge Piers Remediation General Permit – Process Description

Process Description:

Cianbro has encountered an area of fine particle sediment during drilling operations for the installation of micropile associated with the MBTA Merrimack River Bridge pier rehabilitation project. These fine particles will not settle or filter during standard mechanical turbidity control Best Management Practices. Use of a chemical system to limit the turbidity discharge and facilitate more efficient work schedule is being proposed via application for the Remediation General Permit. Use of this system is being proposed at all 4 pier locations. It is also possible that the filtration system will be utilized at two locations at once.

The project is permitted for a minor dredge under MA DEP 401 Water Quality Certification and Army Corp of Engineers MA General Permit (GP No. 6) under the pre-construction notification process. Both approvals include consults for Endangered and Protected Species (State and Federal) and Historic Preservation review. Both authorizations are included with this NOI submittal along with initial sediment sampling data for the pier area we plan to utilize the dewatering system. Total Suspended Solids data is being collected for background readings to represent the influent component, discharge data will be obtained during operations.

Information to support the Notice of Intent is included in this document.

 Location Map  Pier 1 design detail drawing with location of dewatering system equipment set up (all 4 piers would be the same)  Lockwood System Description  Summary Sediment Sampling Data – P1-1 is the initial location for equipment set up. MR5 P4-1 second location if needed. ** TSS sampling is pending and will be forwarded upon receipt.  Historic Preservation Documentation  TOY restrictions table from ESA and EFH noting consults  ACOE Authorization  401 WQC MA DEP

Part D: Discharge Information

Influent Sampling: Influent water will be river water from the drilling area, contaminated with high suspended solids which create turbidity concerns as filtration via mechanical means is not adequate to treat the small particle size. Two samples of river water, prior to work activity, will be collected for TSS analysis. Data will be submitted upon receipt of results. No contaminants requiring management under the MCP regulations for Massachusetts are known to be present. Sediment data from 2015 associated with dredge material management at the piers is included as a reference.

Effluent sampling: Effluent sampling will be completed during the first day of full operation of the treatment system for TSS. Visual observations will be ongoing for turbidity.

Part E. Treatment System

One (1) chemical aided settling system for the application of LRT E-50 coagulant and LRT nonionic dry polymer (flocculants) will be used to control total suspended solids (TSS) in the effluent. The chemical aided settling system will be installed at the influent tank at the head of the water treatment system. The system will include two chemical feed pumps, mixers, injection tubing and a flocculant “make-down” system used to prepare batches of dry polymer. The appropriate chemical dosing necessary for efficient TSS settling will be determined in the field via a “jar test”. Dosing can vary throughout the project with changes in influent water characteristics such as flowrate, pH, and TSS concentrations.

The dosing concentration for both the coagulant and dry polymer typically ranges from 25-50 parts per million (ppm). The actual dosing concentration is based on visual observations in the field and will be adjusted and calibrated by the operator during startup of the additional components to achieve the appropriate set-point for the system. Dosing is continuous at the set concentration while the system is running. It is important to note that although the dosing concentration is 25-50 ppm, the detected concentration in the carryover (post bag filter) is in the parts per trillion (ppt) range (about 6 orders of magnitude less than the dosing concentration). This is because nearly all the applied chemical becomes incorporated in the sludge and removed from the waste stream as a solid from the weir tank and as part of typical system operations and maintenance. The only waste generated will be incorporated with the sludge and removed as a solid.

The SDS Sheets for the chemicals used in the chemical aided settling system are attached (E50 Coagulant and 823 Polymer).

Part F of the RGP NOI requires that chemical additives be identified if applied to the effluent prior to discharge. To satisfy the confirmation requirements of RGP Part 2.5.3.d.ii:

1. The addition of a the coagulant and flocculant will not add any pollutants in concentrations which exceed permit effluent limitations; 2. The addition of the coagulant and flocculant will not result in the exceedance of any applicable water quality standard; and 3. The addition of the coagulant and flocculant will not add any pollutants that would justify the application of permit conditions that are different from or absent in the permit.

The addition of coagulants and flocculants to control TSS values is a standard treatment technique for temporary construction dewatering; it is not expected to exceed applicable permit limitations and water quality standards or alter conditions in the receiving water. No additional testing is considered necessary for use of this product or to demonstrate that use of this product will not adversely affect the receiving water.

MERRIMACK RIVER BRIDGE SCOUR COUNTERMEASURES PIER 1

October 30, 2020

Mr. Nick Azevedo Cianbro Corporation 101 Cianbro Square P.O. Box 1000 Pittsfield, Maine 04967

Reference: Proposal – Water Treatment Services 250 River Street Haverhill, MA LRT Reference # 4154

Dear Nick:

Thank you for your inquiry regarding water treatment services provided by Lockwood Remediation Technologies, LLC (LRT) on behalf of Cianbro Corporation (Cianbro) for the above-referenced job site. This proposal is based on a site visit conducted on October 21, 2020 and available information provided by Cianbro.

Baseline Assumptions

1. The scope of work includes the installation of a water treatment system with a flow rate up to 100 gallons per minute (gpm) to treat turbid water produced during drilling activities at the site. The water treatment system equipment will be unloaded onto the barge by Cianbro and will be setup by LRT. 2. Primary contaminants of concern in the waste stream include total suspended solids (TSS). It is assumed that any metals concentrations will be addressed through settling and bag filtration. If additional analytes are encountered, modification to the proposed water treatment system may be required which may affect pricing. 3. Treated water will be discharged under a permit obtained by others. 4. Disposal of sediment in the clarifier and dewatering box at the end of project will be handled by others. 5. Power will be provided by others.

Cianbro Corporation Page | 2 250 River Street Haverhill, MA October 30, 2020

Work Scope

Clarifier and Sludge Management

1. One (1) 10,000-gallon clarifier with settling tube media. The clarifier is designed for bulk sediment removal. Cleanout ports are located on the bottom of the unit for ideal sludge removal. An electric sludge pump will be supplied to transfer sludge to a designated area determined by others.

2. One (1) chemical aided settling system for the application of LRT E-50 coagulant and LRT nonionic dry polymer. The system includes two chemical feed pumps, mixers and a control panel. A flocculant “make-down” system that prepares a batch of dry polymer for use is included. The appropriate chemical dosing necessary for efficient solid separation will need to be determined onsite via a “jar test”. Once this is completed an accurate estimate of chemical usage can be established. Please note that chemical usage can vary throughout a project with changes in influent water characteristics such as pH, TSS concentration, etc. LRT recommends that periodic jar testing occur throughout the project especially when changes to influent water conditions are expected.

3. One (1) submersible or centrifugal pump with level controls capable of pumping water at 100 gpm. Power requirements will be 3-phase 480V.

Dewatering Box

1. One (1) 5,000-gallon dewatering box will be included for sludge management. Decant water from dewatering box will be pumped back to the treatment system.

Bag Filter Skid

1. One (1) triple bag filter skid with three (3) single bag filters plumbed in parallel such that two bag filter vessels can operate while the other remains in standby. During a bag filter change-out, two vessels are opened while the other is closed so that water treatment never needs to be shut down. Each bag filter vessel includes isolation valves, sample ports and pressure gauges on the influent and effluent piping so that it is clear when a bag filter change-out is required. Maximum flow rate is 100 gpm and maximum pressure is 125 PSI.

Flowmeter/Totalizer

1. One (1) flow meter w/ totalizer.

P P

Effluent/ Discharge Influent 10,000 Gallon Clarifier Flow Meter/ Totalizer Submersible P P Pump w/ Float

Bag Filtration

Chemical Aided Settling System Sludge Pump 5,000 Gallon Dewatering Box

Key: Piping/Hose Sample Port Notes: Ball Valve Butterfly Valve 1.) Figure is not to scale Pressure Gauge P 2.) System rated for 200 GPM Decant Line

Lockwood Remediation Technologies, LLC 89 Crawford Street Leominster, MA 01453 Office: 774-450-7177 Water Treatment System Schematic 250 River Street DESIGNED BY: LRT DRAWN BY: JHJ Haverhill, MA

CHECKED BY: DATE: PROJECT No. PROJECT No. FIGURE 4154

Appendix B - Exhibit B-1 Draft Summary of Soil Anaytical Results - Detected Analytes Only MBTA Railroad Bridge H-12-061 (AIF) Haverhill, Massachusetts

Sample ID MR-1/SA-1 MR-7/SA-1 Dup. (RPD) MR-2 P1-1 MR-3 P2-1 MR-4 P3-1 MR-5 P4-1 MR-6/NA-3 Regulatory Comparison Tables1 Depth (0-2') (0-5') (0-2') (0-5') Relative % (0-2') (0-5') (0-2') (0-5') (0-2') (0-8') (0-2') (0-5') (0-2') (0-5') MCP Reportable Conc. COMM-97 Table 1 Type Grab Composite Grab Composite Difference Grab Composite Grab Composite Grab Composite Grab Composite Grab Composite MCP MCP Soil Reuse Allowable Levels Date 11/20/2015 11/20/2015 11/20/2015 11/20/2015 Sample-Dup. 11/13/2015 11/13/2015 11/16/2015 11/16/2015 11/16/2015 11/16/2015 11/20/2015 11/20/2015 11/5/2015 11/5/2015 RCS-1 RCS-2 Lined Landfill Unlined Landfill Units mg/Kg mg/Kg mg/Kg mg/Kg VOCs (8260B) mg/Kg Total VOCs 10 4 Toluene <0.06 <0.06 <0.05 <0.05 <0.05 <0.05 0.05 Toluene 30 1,000 Others BRL BRL BRL BRL BRL BRL BRL Others

% Solids % 84 83 1.2% 84 80 79 87 91 % Solids pH SU 6.84 6.76 1.2% 7.4 11.21 10.64 7.93 7.77 pH >2 and <12.5 >2 and <12.5 Redox Potential mV 35 15 80.0% -56 -71 50 180 240 Redox Potential Specific Cond. mS/cm 24 22 8.7% 19 260 750 17 40 Specific Cond. 8,000 4,000 2 2 Total Org. Carbon (EPA L. Kahn) mg/Kg 1,700 4,000 -81% 1,810 1,700 5,240 3,160 3,650 Total Org. Carbon

Inorganics: mg/Kg Inorganics: Arsenic 6.9 7 -1.4% 5.4 8.2 5.2 4.4 8.6 Arsenic 20 20 40 40 Cadmium 0.2 0.2 0.0% <0.1 <0.1 0.3 0.3 <0.1 Cadmium 70 100 80 30 Chromium 32 31 3.2% 21 23 43 46 18 Chromium III 1,000 3,000 1,000 1,000 Copper 17 15 12.5% 9.2 8.6 15 11 260 Copper Lead 16 21 -27.0% 6.2 13 33 22 50 Lead 200 600 2,000 1,000 Mercury 0.02J 0.02J 0% 0.05J 0.09 0.13 0.03J 0.04J Mercury 20 30 10 10 Nickel 16 20 -22.2% 16 14 13 15 12 Nickel 600 1,000 Zinc 38 32 17.1% 27 36 65 58 42 Zinc 1,000 5,000 Hexavalent Cr. <0.48 <0.46 <0.44 <0.48 <0.51 <0.46 <0.44 Hexavalent Cr. 100 200

SVOCs and Target PAHs (8270D) mg/Kg SVOCs/PAHs (8270D) Naphthalene <0.08 <0.08 <0.08 <0.08 0.16 <0.08 <0.08 Naphthalene 4 20 2-Methylnaphthalene <0.08 <0.08 <0.08 <0.08 0.097 <0.08 <0.08 2-Methylnaphthalene 0.7 80 Acenaphthene <0.08 <0.08 <0.08 <0.08 0.1 <0.08 <0.08 Acenaphthene 4 3000 Acenaphthylene <0.08 <0.08 <0.08 <0.08 <0.08 <0.08 <0.08 Acenaphthylene 1 10 Fluorene <0.08 <0.08 <0.08 <0.08 0.11 0.083 <0.08 Fluorene 1,000 3,000 Phenanthrene 0.2 0.21 -4.9% <0.08 <0.08 0.4 0.6 0.56 Phenanthrene 10 1,000 Anthracene <0.08 <0.08 <0.08 <0.08 0.28 0.19 0.16 Anthracene 1,000 3,000 Fluoranthene 0.36 0.42 -15.4% <0.08 <0.08 0.88 0.76 0.77 Fluoranthene 1,000 3,000 Pyrene 0.29 0.34 -15.9% <0.08 <0.08 1.1 0.64 0.64 Pyrene 1,000 3,000 Benzo[a]anthracene 0.15 0.18 -18.2% <0.08 <0.08 0.67 0.36 0.34 Benzo[a]anthracene 7 40 Chrysene 0.18 0.19 -5.4% <0.08 <0.08 0.67 0.34 0.33 Chrysene 70 400 Benzo[b]fluoranthene 0.22 0.23 -4.4% <0.08 <0.08 0.65 0.43 0.38 Benzo[b]fluoranthene 7 40 Benzo[k]fluoranthene <0.08 0.089 <0.08 <0.08 0.24 0.16 0.12 Benzo[k]fluoranthene 70 400 Benzo[a]pyrene 0.16 0.17 -6.1% <0.08 <0.08 0.65 0.35 0.3 Benzo[a]pyrene 2 7 Indeno[1,2,3-cd]pyrene 0.13 0.14 -7.4% <0.08 <0.08 0.42 0.26 0.23 Indeno[1,2,3-cd]pyrene 7 40 Dibenz[a,h]anthracene <0.08 <0.08 <0.08 <0.08 0.11 <0.08 < 0.08 Dibenz[a,h]anthracene 1 4 Benzo[g,h,i]perylene 0.12 0.13 -8.0% <0.08 <0.08 0.42 0.23 0.21 Benzo[g,h,i]perylene 1,000 3,000 bis(2-Ethylhexyl)phthalate <0.4 <0.4 <0.4 0.94 <0.4 <0.4 <0.4 bis(2-Ethylhexyl)phthalate 90 600 Others BRL BRL BRL BRL BRL BRL BRL Others Total Detected SVOCs: 1.81 2.10 -14.8% BRL 0.94 6.96 4.40 4.04 Total Detected SVOCs: 100 100 Total Target PAHs: 1.81 2.10 -14.8% BRL 0.94 6.96 4.32 4.04 Total Target PAHs: 5,000 2,500

EPH (MA EPH) mg/Kg EPH (MA EPH) C9-C18 Aliphatic <20 <20 <20 <20 <20 <20 <20 C9-C18 Aliphatic 1,000 3,000 C19-C36 Aliphatic <20 <20 <20 39 <20 <20 <20 C19-C36 Aliphatic 3,000 5,000 C11-C22 Aromatic (Adj.) <20 <20 <20 <20 <20 25 <20 C11-C22 Aromatic (Adj.) 1,000 3,000 C11-C22 Aromatic (Unadj.) <20 <20 <20 <20 <20 42 29 C11-C22 Aromatic (Unadj.)

TPH C9-C40 (8100 Mod) mg/Kg <20 <20 <20 28 100 30 27 TPH C9-C40 (8100 Mod) 5,000 2,500

PCBs (105,8270D-SIM/680(M) mg/Kg PCBs 1 4 <2 <2 Trichlorobiphenyls <0.000440 <0.000427 <0.00042 <0.00044 0.00506 J 0.00187 0.00462 J Tetrachlorobiphenyls <0.000440 0.00174 <0.00042 <0.00044 0.00324 J 0.00242 0.0043 J Pentachlorobiphenyls 0.0023 0.00266 -14.5% <0.00042 <0.00044 <0.000487 0.0029 0.00147 J Hexachlorobiphenyls <0.000440 0.00169 <0.00042 <0.00044 <0.000487 0.00209 <0.000434 Total PCB Homologs Detected: 0.0023 0.00609 -90.3% BRL* BRL* 0.0083 J* 0.00928 0.0104 J* Note: * indicates sample extracted past hold time

1 Regulatory Comparison Values provided for comparison purposes only and may not be applicable. Massachusetts Contingency Plan Reportable Concentrations for S-1 and S-2 classified soils. COMM-97 Values applicable for reuse of contaminated soil at Massachusetts Landfills. 2 TOC result for sample MR-2, P1-1 and sample MR-6, NA-3 is by Method SW846 9060Mod(1).

N:\PROJECTS\2015\J1155167\Working Files\DRAFTS (Proposal-Reports-Communications)\DRAFT Report\Appendix B - Tables\Revised Draft Analytical Summary Table.01.06.16.xls

Merrimack River Bridge Haverhill, MA: Protected Species Time of Year Restrictions Disclosure: This document is for reference ONLY. The information included in this table serves as a guide. Caveat: Contractor will need to confirm with the Authority at the time of defining work schedules to ensure that the time restrictions are accurate and that work will not impact any species. Species Status Spawning Period Spawning Peak Spring TOY Fall TOY Additional Restrictions vegetated riparian zone aids DO levels and River Herring Alewife Present and spawning3 Late March - Mid June3 April and May3 4/1 - 6/153 9/1 - 11/153 stable temperatures for appropriate habitat structure3

River Herring 3 3 3 3 shallow riverine environments used for Present and spawning April - June April and May3 4/1 - 6/30 9/1 - 11/15 3 Blueback spawning spawn at night, in shallow waters in moderate 3 3 3 3 3 current - increased turbidity causes stress to American Shad Present and spawning Late April - July May - June 5/1 - 7/15 9/30 - 10/31 migration, spawning and development of larvae2

spawn at gravel and cobble riffles at night - Late March - Late threatened in urban areas by nutrient 3 3 3 enrichment, reduced shade/riparian buffer, Rainbow Smelt Present and spawning Early March - May 2 3/1 - 5/31 N/A May increased water withdrawal and NPS pollution - require clean substrate and good water quality3

migration through river to ocean at night Habitat present, but spawn during rain events - turbidity increases stress American Eel N/A N/A 3/15 - 6/303 9/15 - 10/313 in Sargasso Sea2 and delays-avoid gravel and cobble substrate disruption3 3 3 3 watershed alterations pose threat to White Perch Present and spawning Early April - Mid-June May 4/1 -6/15 N/A 3 reproductive strategy

April - July & Sept. - hatchery-raised-Adult migration through 3 3 3 Merrimack River April-July - avoid work that Atlantic Salmon Present and spawning 3 May - June3 4/1 - 7/15 9/15 - 10/31 Oct. obstructs passage or alters hydrology3

Present, but not spawning 3 consult Mass Wildlife-cannot impact Atlantic Sturgeon N/A N/A 4/1 - 11/1 N/A 3 in Merrimack River3 spawning or migration

3 4 3 4 consult Mass Wildlife-cannot impact Shortnose Sturgeon Present and spawning March 1 to June 7 Unknown 3/1-6/7 N/A 3 spawning or migration

3 3 short migration to coast rivers-no spawning in Atlantic Tomcod Present, but not spawning N/A N/A 2/15 - 4/30 N/A 3 Merrimack River 1. TOY= Time of Year restriction 4. Per NMFS, Kevin Madley 2. USGS National Wetlands Resource Center N/A: Not applicable to this species 3. Massachusetts Division of Marine Fisheries: Technical Report-47

CDW Consultants, Inc. Civil and Environmental Engineers www.cdwconsultants.com

Charles D. Baker Kathleen A. Theoharides Governor Secretary

Karyn E. Polito Martin Suuberg Lieutenant Governor Commissioner

September 25, 2020

Holly Palmgren TRANSMITTAL # X263686 MBTA NAE-2013-01300 Ten Park Plaza, Room 3910 Boston, MA 02116

RE: 401 WATER QUALITY CERTIFICATION – AMENDMENT # 2 Application for: BRP WW 08 WATER QUALITY CERTIFICATION FOR DREDGING – MINOR PROJECT

AT: MBTA Merrimack River Bridge - Haverhill Merrimack River Basin

Dear Ms. Palmgren:

The Department of Environmental Protection (“MassDEP”) has received your request, dated September 16, 2020, to modify the previously issued 401 Water Quality Certification (“401 WQC”) for the above-referenced project. This modification is necessary to authorize an extension of the expiration date of the permit.

The change to the original 401 WQC will be the modified condition as follows:

Modified Condition # 7. This Certification remains in effect through February 4, 2022.

In accordance with the provisions of Section 401 of the Federal Clean Water Act as amended (33 U.S.C. §1251 et seq.), MGL c.21, §§ 26-53, and 314 CMR 9.00, MassDEP has determined there is reasonable assurance the project or activity will be conducted in a manner which will not violate applicable water quality standards (314 CMR 4.00) and other applicable requirements of state law.

This letter serves as Amendment # 2 of 401 WQC, Transmittal # X263686. All Conditions included both in the original 401 WQC and Amendment # 1 for this project shall remain in force. Failure to comply with this 401 WQC is grounds for enforcement, including civil and criminal penalties, under MGL c.21 §42, 314 CMR 9.00, MGL c. 21A §16, 310 CMR 5.00, or other possible actions/penalties as authorized by the General Laws of the Commonwealth.

This information is available in alternate format. Call Michelle Waters-Ekanem, Diversity Director, at 617-292-5751. TTY# MassRelay Service 1-800-439-2370 MassDEP Website: www.mass.gov/dep Printed on Recycled Paper

2 401 WQC Amendment # 2 – Transmittal # X263686

Should you have any questions relative to this amendment, please contact Derek Standish at (617) 654-6611.

Lisa Rhodes Wetlands Program Chief

ecc: Haverhill Conservation Commission, 4 Summer Street, Haverhill, MA 01830 Brayden Sheive, Lauren Walsh, and Nick Azevedo, Cianbro Corporation, 101 Cianbro Square, PO Box 1000, Pittsfield, ME 04967 Jill Provencal and Philip DiPietro, MassDEP – NERO, 205B Lowell Street, Wilmington, MA 01887 Robert Boeri, Office of Coastal Zone Management, 251 Causeway Street, Suite 800, Boston, MA 02114 Tay Evans, Division of Marine Fisheries, 30 Emerson Avenue, Gloucester, MA 01930 Alan R. Anacheka-Nasemann and Barbara H. Newman, Department of the Army, New England District, Corps of Engineers, 696 Virginia Road, Concord, MA 01742-2751

3 401 WQC Amendment # 2 – Transmittal # X263686

4 401 WQC Amendment # 2 – Transmittal # X263686

Laboratory Report

124 Heritage Avenue Portsmouth NH 03801 Nick Azevedo PO Number: None Cianbro Job ID: 55256 250 River St Date Received: 11/12/20 Haverhill, MA 01832

Project: Merrimack River Bridge B64CN02 Attached please find results for the analysis of the samples received on the date referenced above.

Unless otherwise noted in the attached report, the analyses performed met the requirements of Absolute Resource Associates' Quality Assurance Plan. The Standard Operating Procedures are based upon USEPA SW-846, USEPA Methods for Chemical Analysis of Water and Wastewater, Standard Methods for the Examination of Water and Wastewater and other recognized methodologies. The results contained in this report pertain only to the samples as indicated on the chain of custody.

Absolute Resource Associates maintains certification with the agencies listed below. The reported results apply to the sample(s) in the condition as received at the time the laboratory took custody. This report shall not be reproduced except in full, without written approval of the laboratory. The liability of ARA is limited to the cost of the requested analyses, unless otherwise agreed upon in writing.

We appreciate the opportunity to provide laboratory services. If you have any questions regarding the enclosed report, please contact the laboratory and we will be glad to assist you.

Sincerely, Absolute Resource Associates

Aaron DeWees Date of Approval: 11/13/2020 Chief Operating Officer Total number of pages: 3

Absolute Resource Associates Certifications

New Hampshire 1732 Massachusetts M-NH902 Maine NH902

124 Heritage Avenue | Portsmouth, NH 03801 | 603-436-2001 | absoluteresourceassociates.com

1 of 3 Project ID: Merrimack River Bridge B64CN02 Job ID: 55256 Sample#: 55256-001 Sample ID: Sample #01 Upstream Matrix: Water Sampled: 11/12/20 0:00 Reporting Instr Dil'n Prep Analysis Parameter Result Limit Units Factor Analyst Date Batch Date Time Reference Total Suspended Solids (TSS) < 4.8 4.8 mg/L 1 WAS 2004346 11/12/20 13:30 SM2540D

Sample#: 55256-002 Sample ID: Sample #02 Downstream Matrix: Water Sampled: 11/12/20 0:00 Reporting Instr Dil'n Prep Analysis Parameter Result Limit Units Factor Analyst Date Batch Date Time Reference Total Suspended Solids (TSS) < 4.9 4.9 mg/L 1 WAS 2004346 11/12/20 13:30 SM2540D

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PAGE OF ...... 124 Heritage Avenue #16 CHAIN-OF-CUSTODY RECORD 19 Portsmouth, NH 03801 AND ANALYSIS REQUEST 55256 Absolute Resource ' 603-436-2001 associates absoluteresourceassociates.com ANALYSIS REQUEST

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