(E) NEPA.pdf

NEPA ENVIRONMENTAL CHECKLIST – SUBASENLON

NEW FORM EFFECTIVE 07/10/2020. This NEPA Environmental Checklist (EC) is used to determine the environmental requirements associated with a proposed project. Complete the first 2 pages of the form, attach a site map and a SOW or 1391, and then submit to the PWD Environmental Division (EV). A complete EC with required attachments should be submitted a minimum of 15 days prior to project’s scheduled start date. If the project scope is modified or if project work has not been initiated within 1 year of the signature date, please contact EV for review/approval prior to initiating project activities.

GENERAL PROJECT INFORMATION

1 Activity Requesting: MIDLANT NLON SUBASE FEAD

2 Activity POC / Phone / email: Stephen Meagher/ 860-710-8636/ Stephen.meagher@navy.mil

3 Name of Project: Repair Water Main Valves/lines South East Zone

4 Project Number (if any): 1664998

5 Project Location: There will be 29 sites with 10 optional sites upper base South East Zone.

6 Project Type: Construction Repair

7 Description of the Project: Replace water main valves from 2-1/2 feeds to buildings with 6” 8” and 12” valves

8 Why is this project needed? Valves are very old and most do not function as designed

9 When project scheduled to begin? FY22

PLANNING QUESTIONS

10a Total Project Area (sq. ft.) - (Include clear zones, soil disruption/disturbance area, lay down areas, etc) 39 sites totaling 15,600sf

10b Percentage of Project Area - that is currently Impervious (asphalt, bldgs, etc.) 75%

10c Percentage of Project Area - that will be Impervious once project completed 75%

10d Percentage of Project Area - that will be disturbed (excavated, graded, etc) 100%

11 How will Stormwater be managed in the long-term (post-construction)? N/A

12 How will Sanitary Sewage (wastewater) be managed in the long-term? N/A

13 Will there be actions conducted in the water (dredging, new pilings, removal etc.)? If so indicate state what action(s). No

14 Will there be actions conducted in an area under an Agriculture outlease? No

DESIGN RELATED QUESTIONS YES NO UNSURE

15 Will trees be removed?

16 Will emission-generating equipment (e.g. bull dozer, back hoe, etc.) be utilized during construction? Excavator

17 Will the project remove, install or utilize a petroleum storage tank, that is >=55-gallons?

18 Will the project remove or install an Oil Water Separator?

19 Will the project relocate excavated material at the Installation? If yes where is it going? To be determined

Will the construction / repair actions generate by-products (power washing water, haz. waste, state regulated waste such as asbestos, PCB items, transformers, capacitors, switches, light ballasts, lead paint chips, florescent bulbs, waste oil, solvents, etc)? If so indicate what type of waste(s) will be generated.

Will the construction / repair actions require de-watering from excavations, trenches or manholes? If yes, circle where de-watering will occur? Construction will occur throughout the year and excavation may fill up with water where the contractor will have to remove the water to continue the water valve repair. There is one location that is very deep and will most likely be under the groundwater level. Contractor will be responsible to get all permits to remove the water and dispose of it properly. Dewatering location TBD.

DESIGN RELATED QUESTIONS YES NO UNSURE

22 Will there be new hard pipe connections or modifications to existing hard pipe connections using water from Groton Utilities, the Thames, or wells?

Will new hard pipe connections or modifications to existing hard pipe connections discharge wastewater to the sanitary sewer, storm sewer or the Thames River? If so circle discharge type.

24 Will there be UST or AST installation, modification, or removal? If so indicate which type of tank and which action.

25 Will there be installation, repair, modification or removal of any system containing refrigerants

(e. g. freon, halon)?

Will there be modifications, destruction, or disturbance of the shoreline, streams, groundwater tables, surface water bodies, or wetlands? If so, explain. There is one location that is very deep and will most likely be under the groundwater level.

Will there be any excavation and/or dewatering with the potential to impact the designated CT Coastal Zone (i.e., 1,000 feet inland from the MHW line)? If so, what type of activity will occur that can potentially impact the coastal zone area?

28 New proposed use and/or application of pesticides, rodenticides and herbicides? If so, indicate which type.

29 Will the project require pile driving?

OPERATIONAL RELATED QUESTIONS YES NO UNSURE

30 Will emission-generating equipment be installed (ex. paint booth, emergency generators)? If so, what type of equipment will be installed?

31 Will there be any new processes or maintenance activities conducted? If so, describe what they are.

ADDITIONAL COMMENTS

Type here:

SAME 9 June 2021

Checklist Preparer, phone number and e-mail (if Same as Question #2 – Type “SAME”) Date

NEPA ENVIRONMENTAL CHECKLIST – SUBASENLON

SUMMARY OF ENVIRONMENTAL REQUIREMENTS

(To Be Completed by Environmental Division Only) PLEASE NOTE: The Environmental review provided is only valid for 1 year. If the project scope has been modified or checklist has expired, please contact the SUBASENLON PW Environmental Division to re-evaluate the project.

Name of Project: Repair Water Main Valves/lines South East Zone

Project Number: 1664998

PLANNING REQUIREMENTS (Issues That Can Effect the Project’s Timeline, Cost, or Site Location) Environmental Aspect YES NO Environmental Requirement Project Impacts

National Env Policy Act (NEPA) CATEX CATEX = 1 week; EA = 12 months; EIS = 24 months Can’t award till NEPA complete

Threatened or Endangered Species Consultation with USFWS and/or NMFS required. Process may take 6 months

Marine Mammal Protection Act IHA or LOA Consultation with NMFS May take 4 to 18 months

Wetland Impacts Permits and possibly mitigation required. May take 7 months after

NEPA

Navigable Water Impacts Permits required. Takes 2-7 months after

NEPA

Agriculture Outlease Consultations with NAVFAC Real Estate required. Process may take 1 to 3 months.

Tree Mitigation Compensation for tree loss or mitigation is required. This may add costs to project.

Coastal Zone Mgmt Act Refer to Requir 1. Process takes 90 days.

Cultural Resources Consultations with SHPO required. Process may take 1 to 6 months

Major Air Emission Source Permit is required. Process takes 6 months

Construction Emissions Refer to Comment 2. This process takes a week.

Installation Restoration Refer to Requir 2. Process may take 4 months

Petroleum Contamination Follow guidance in CNRMA POL SOP. This may add costs to project.

DESIGN REQUIREMENTS (Issues To Be Addressed In Design Phase) Storm Water Best Mgmt

Practices, Erosion & Sediment Control

Refer to Requir 3. Incorporate into the design.

CT Storm Water Mgmt Permit Required for projects that will disturb ≥ 1 acre of land. Obtain before construction.

De-watering, Wastewater Mgmt Refer to Requir 4. Incorporate into the design.

Beach & Dune Management Protective measures required for impact beaches & dunes Incorporate into the design.

Spill Preventative Measures Secondary containment required for tanks ≥ 55 gal Incorporate into the design.

OPERATIONAL REQUIREMENTS (Issues To Be Addressed Prior To Use)

New Industrial Process Environmental Department Site Inspection required. Required before operation.

New Waste Generating Activity Environmental Department Site Inspection required. Required before operation.

ADDITIONAL REQUIREMENTS or COMMENTS Comment 1 The proposed action is within the scope of CATEX #8: Routine repair and maintenance of buildings, facilities, vessels, aircraft, ranges, and equipment associated with existing operations and activities. None of the exclusions from reliance on a CATEX applies in this case; therefore, the proposed action does not require further NEPA analysis.

The applicability of this CATEX determination is based on the full implementation of all environmental requirements identified below.

Comment 2 A Record of Non-Applicability was completed to document compliance with the General Conformity Rule, Section 176(c) of the Clean Air Act. The proposed action is exempt by rule per 40 CFR 93.153(iv).

Requir 1 Work may occur in the coastal zone; however, a Coastal Consistency Determination is not required provided that no deleterious material enters storm drains, manholes, or the Thames River.

Requir 2 A dig permit shall be obtained from and approved by the PWD prior to initiation of any ground-disturbing activities.

Soil management procedures as detailed in the dig permit and the SUBASE Soil Management SOP shall be followed.

Soil that cannot be returned to its original location may need to be disposed of off-base at the contractor's expense.

Requir 3 Work shall be executed in full compliance with the provisions of the General Permit for the Discharge of Stormwater from Small Municipal Separate Storm Sewer Systems (MS4 Permit), the SUBASENLON Stormwater Pollution Prevention Plan, and the SUBASENLON Stormwater Management Plan. Appropriate erosion and sediment control measures shall be used when performing work under the scope of this project, especially with respect to work involving excavation.

Requir 4 No wastewater shall be discharged to the storm drains. PW NLON EV Division shall be notified immediately of any actions that require dewatering activities under the scope of this project. No discharges shall occur without prior discussion with the PW NLON EV Division Wastewater Program Manager (x2525).

- Dewatering is NOT authorized for discharge to ground in IR sites or zones.

- Outside of IR sites/zones, uncontaminated water may be discharged to ground provided it has been approved by the Wastewater Program Manager prior to commencement and the discharge complies with all federal, state, and local guidelines, including the 2002 Connecticut Guidelines for Soil Erosion and Sediment Control (https://portal.ct.gov/DEEP/Water/Soil-Erosion-and-Sediment-Control-Guidelines/Guidelines-for-Soil-Erosion-and-Sediment-Control).

- If wastewater discharges to the sanitary sewer are planned, the contractor shall obtain any required permits prior to discharging activity and shall coordinate in advance with the PW NLON EV Division Wastewater Program Manager (x2525).

Requir 5 Appropriate disinfection procedures shall be performed in association with any work conducted on the fresh water supply lines in accordance with Section 19-13-B47 of the CTDPH regulations. This work shall be done using established procedures accepted by the American Water Works Association and copies of all test results confirming the successful completion of disinfection procedures shall be forwarded to the PW NLON EV Division Drinking Water Manager (x5140).

Requir 6 A backflow prevention device shall be required for any connections to potable water lines. All work involving the testing and certification of backflow prevention devices or surveys for cross-connections in the water distribution system shall be done in accordance with DoD and Navy regulations and policies, CT Department of Public Health (CTDPH) requirements, and American Water Works Association standards and practices. Information shall be provided to the PW NLON EV Division Drinking Water Manager (x5140) regarding the testing performed on any such devices and the CTDPH-certifications of the person(s) performing these tests.

Requir 7 Disposal of any regulated waste shall be coordinated in advance with the PW NLON Hazardous Waste Program Office (x4298).

- Non-regulated solid waste (i.e., general trash, construction debris, and recyclable items) shall be properly managed and disposed of in accordance with Federal, State, Navy, and local regulations.

- Any regulated waste generated under the scope of this project shall be managed, stored, and disposed of in accordance with the SUBASENLON Hazardous Waste Management Plan.

Requir 8 Use of exterior storage and laydown areas in support of this project shall be done in compliance with SUBASENLON instructions and policies. Site must be evident of good housekeeping practices consistent with proper storm water management and control.

LCDR Christopher Sandmel; x4480;

christopher.sandmel@navy.mil

Environmental POC; phone number and email Signature and Date https://portal.ct.gov/DEEP/Water/Soil-Erosion-and-Sediment-Control-Guidelines/Guidelines-for-Soil-Erosion-and-Sediment-Control https://portal.ct.gov/DEEP/Water/Soil-Erosion-and-Sediment-Control-Guidelines/Guidelines-for-Soil-Erosion-and-Sediment-Control mailto:christopher.sandmel@navy.mil