(B) 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: PWD FEAD New London

2 Activity POC / Phone / email: John Papitto, 860-694-4914, john.a.papitto.civ@us.navy.mil

3 Name of Project: B562 Replace MAU#1

4 Project Number (if any): eProjects # 1874684

5 Project Location: NAVSUBASE NEW LONDON CT

6 Project Type: Design Build

7 Description of the Project:

The scope of this Design-Build project is to provide replacement of (2) existing Makeup Air Units (MAU) located in B562 Hazardous Waste Management Facility at Navy SUBASE Groton CT. New equipment to match existing capacities, but are to include dehumidification of incoming air to 50% RH +/- 10%. Equipment to be energy efficient, cost effective, and technological innovation is allowed (i.e. a Dedicated Outdoor Air Unit (DOAS) vice MAU). Both units are gas-fired.

MAU#1 is supply air only. MAU#2 is supply and return. New equipment to fit on existing roof curbs.

Base Bid includes the design, provision and installation of MAU#1, and the design only for

MAU#2.

Option 1 includes the provision and installation of MAU#2.

Scope of work includes the following:

1) Install any required additional utilities for new MAU (i.e. electrical, disconnect, piping, gas, etc).

2) Install new MAU controls tied into existing building DDC.

3) Similar to existing, new MAU fan to shutdown on detection of smoke.

4) Provide crane and rigging.

5) Removal of existing MAU, and installation of new MAU, including utility and control tie-ins, shall be accomplished within 2 days.

6) Test, adjust, and balance new MAU.

7) Once the new MAU has been proven, accepted, and operational, proceed with demolishing existing Horizontal Dehumidifier Fancoil Units (FC-1/2), Air Cooled Condensing Units (CND-1/2), and associated concrete pad, which currently serve Storage Areas 119/120. Restore site to match existing.

8) Existing concrete pad is in a Potential PFAS (Per- and Polyfluoroalkyl Substances) area. There won’t be any excess soil. Some additional soil may need to be brought in to fill the hole/slope where the pad was removed. All soil shall remain on site.

9) Any abandoned piping, or electrical power/controls left as a result of equipment demolition is to be removed, and any wall/floor/ceiling penetrations shall be patched to match existing, and sealed/fire stopped as required. Seal/fire stop new penetrations as well.

8 Why is this project needed?

Both units are 26 years old, replacement parts are no longer available, and neither unit has dehumidification, causing unsafe wet and slippery floors in the shipping, receiving, process and storage areas.

9 Date project scheduled to begin? Potential award by 30 Sep 25. Work start FY26 Quarter 1.

PLANNING QUESTIONS

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

Both MAU units serve approx. 7900 SF of bldg. Exterior concrete pad approx. 30 SF.

10b Percentage of Project Area - that is currently Impervious (asphalt, bldgs, etc.) 100%

10c Percentage of Project Area - that will be Impervious once project completed 99.6%

10d Percentage of Project Area - that will be disturbed (excavated, graded, etc) 0.4%

11 How will Stormwater be managed in the long-term (post-construction)? No change

12 How will Sanitary Sewage (wastewater) be managed in the long-term? No change

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? If yes, please list equipment. – Crane, Skid steer loader.

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?

- Concrete pad to be recycled offsite. Soil to remain onsite.

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.

21 Will the construction / repair actions require de-watering from excavations, trenches or manholes? If yes, circle where de-watering will occur?

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. – Condensate drain pans to exist roof drains.

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

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

(e. g. freon, halon)? – Remove/replace (2) MAUs; remove (2) dehumidifiers and condensing units.

26 Will there be modifications, destruction, or disturbance of the shoreline, streams, groundwater tables, surface water bodies, or wetlands? If so, explain.

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 8/1/25

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:

Project Number:

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 Coastal Consistency Determination (CCD) is required. 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 Air Conformity Record of Non-Applicability is required See Comment 2. This process takes a week.

Installation Restoration Land-use controls exist or Consultation w/ EPA required See Requir 7. 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

Required for projects that include excavation or other land disturbance. See Requir 5. 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 Protective measures required for managing excess waters. See Requir 6. 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 Department of Navy CATEX III(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 requires 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 shall comply with all Federal, State, and local environmental regulations as well as with all applicable Navy requirements. SUBASENLON PWD EV shall be the point of contact for all questions related to environmental rules or regulations.

Requir 2 Notify the Facility Operation Specialist the MAUs are required to be entered into the MAXIMO inventory and labeled as units containing Ozone Depleting Substances.

Requir 3 Management, storage, and disposal of any regulated waste shall be coordinated in advance with the PW NLON EV Division Hazardous Waste Program Office (860-694-4298).

- All regulated waste shall be manifested through the Hazardous Waste Program Office.

- 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 and SUBASENLON policies and instructions.

- 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.

Requir 4 Modification or alteration of any HVAC&R equipment that will result in the removal, transfer, or addition of refrigerant shall be done by trained personnel and recorded using forms prescribed by the Contracting Officer. This work shall be performed in compliance with 40CFR82, the NAVFAC Refrigerant Compliance Management BMS, OPNAVINST 5090.1, the Navy Readiness Program Manual, and current Department of Navy requirements on the handling of refrigerants.

Requir 5 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 stormwater management and control.

Requir 6 PW NLON EV Division shall be notified immediately of any actions that require new hard pipe connections or modifications to existing hard pipe connections. Coordinate new connections or modifications to existing connections in advance with the PW NLON EV Division Wastewater Program Manager (860-694-2525) to ensure compliance with permit requirements.

Requir 7 Work will occur in/adjacent to an IR site/zone including PFAS. 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 will need to be disposed of off-base at the contractor's expense.

- PFAS, oil or other contaminated groundwater may be encountered during excavation activities. Groundwater from an IR zone/site shall not be discharged to ground. Groundwater may need to be containerized and disposed of off-site at the contractor’s expense.

Requir 8 Tree removal or pruning is not included in the scope of work for this project.

If tree cutting or limb/branch pruning is determined to be required it must be coordinated in advance with the PWD NLON Natural Resource Manager (860-694-5649), who will complete the required consultation with the U.S. Fish and Wildlife Service (USFWS).

- Tree cutting shall be avoided between 1 April and 31 October, in accordance with the Northern Long- Eared Bat reclassification from threatened to endangered by the USFWS (87 FR 73488).

- Per the USFWS, a tree is considered any tree, branch, limb, etc. that is greater than or equal to 3-inches in diameter.

- If pruning includes limbs greater than or equal to 3-inches in diameter, they are considered "trees" by

USFWS.

Chris Koproski, Installation Environmental Program Director; x3976; christopher.r.koproski.civ@us.navy.mil

PWO/ICO signature not required for this action. CATEX does not require a formal RCE per COMNAVREG MIDLANT Guidance for implementing CATEXs under NEPA, 27 AUG

2012.

Environmental POC; phone number and email Signature and Date mailto:christopher.r.koproski.civ@us.navy.mil