SIU GP Reg Final.pdf

U.S. NAVAL SUBMARINE BASE NEW LONDON

GENERAL PERMIT REGISTRATION FORM FOR THE

DISCHARGE OF WASTEWATERS FROM SIGNIFICANT

INDUSTRIAL USERS (SIU GP)

March 2021

Naval Facilities Engineering Systems Command Mid-Atlantic

U.S. Naval Submarine Base New London Groton, Connecticut

Prepared for:

Prepared by:

AH Environmental Consultants, Inc.

Contract: N62470-19-D-4001 | Task Order: N4008520F6395

GENERAL PERMIT REGISTRATION FORM FOR THE

DISCHARGE OF WASTEWATERS FROM

SIGNIFICANT INDUSTRIAL USERS (SIU GP)

NAVAL SUBMARINE BASE NEW LONDON –

GROTON, CONNECTICUT

Prepared For:

NAVAL FACILITIES ENGINEERING SYSTEMS COMMAND

MID-ATLANTIC

NORFOLK, VA 23511

Contracting Officer’s Representative: Dialis B. Figueroa Arriaga

Contract: N62470-19-D-4001 Delivery Order: N4008520F6395

March 2021

AH/BC Navy JV, LLC

11837 Rock Landing Drive, Suite 300 Newport News, Virginia 23606

DEEP-WPED-REG-029 1 of 225 Rev. 10/30/20

General Permit Registration Form for the Discharge of Wastewaters from Significant Industrial Users

(SIU GP)

Please complete this form in accordance with the instructions (DEEP-WPED-INST-029) to ensure the proper handling of your registration. Print or type unless otherwise noted. You must submit the registration fee along with this form.

Part I: Registration Type

Check the appropriate box identifying the registration type.

This registration is for a (check all that apply):

New SIU GP registration and

Replacement of an individual or general permit or an authorization

Renewal of an existing SIU GP registration

New ownership

Modification of an existing SIU GP registration

For New SIU GP registrations:

1. Previous general or individual permit number(s):

CTMIU0130 (MISC GP)

2. Expiration Date: October 30, 2020

(CPPU)

For renewals, new ownership or modifications of an existing SIU GP registration:

SIU GP registration number: _____________

Town Location: Groton, CT

Brief Description of Project: National Defense, Naval Submarine Base

Part II: Fee Information

The applicable registration fee checked below is to be submitted with each registration that you are submitting. Each site registering under the Significant Industrial Users General Permit requires a separate registration. The fee for municipalities is 50% of the above listed rate. The registration will not be processed without the fee. The fee shall be non-refundable and shall be paid by check or money order to the Department of Energy and Environmental Protection.

CPPU USE ONLY

App #:________________________________

Doc #:________________________________

Check #:______________________________

Program: Industrial General Permits

DEEP-WPED-REG-029 2 of 225 Rev. 10/30/20

Part II: Fee Information (continued)

Check the applicable box below identifying facility discharge flow to determine registration fee. Registrants discharging Metal Finishing Wastewater AND Process or Non-process Wastewater must check either Box 4 or 5.

1. For Metal Finishing wastewater discharges with a maximum daily flow greater than or equal to 10,000 gallons per day

$6,250.00 [#2276]

2. For Metal Finishing wastewater discharges with a maximum daily flow less than 10,000 gallons per day

$3,125.00 [#2275]

3. For Process or Non-process wastewater discharges eligible for coverage under the SIU General Permit

$1,000.00 [#2277]

4. For Metal Finishing wastewater discharges with a maximum daily flow greater than or equal to 10,000 gallons per day AND Process or Non-process wastewater discharges eligible for coverage under the SIU General Permit

$7,250.00 [#2278]

5. For Metal Finishing wastewater discharges with a maximum daily flow less than 10,000 gallons per day AND Process or Non-process wastewater discharges eligible for coverage under the SIU General Permit

$4,125.00 [#2279]

Part III: Registrant Information

If a registrant is a corporation, limited liability company, limited partnership, limited liability partnership, or a statutory trust, it must be registered with the Secretary of State. If applicable, registrant’s name shall be stated exactly as it is registered with the Secretary of State. Please note, for those entities registered with the Secretary of State, the registered name will be the name used by DEEP. This information can be accessed at the Secretary of State's database (CONCORD).

If a registrant is an individual, provide the legal name (include suffix) in the following format: First Name; Middle Initial; Last Name; Suffix (Jr, Sr., II, III, etc.).

If there are any changes or corrections to your company/facility or individual mailing or billing address or contact information, please complete and submit the Request to Change Company/Individual Information to the address indicated on the form. If there is a change in name of the entity holding a DEEP license or a change in ownership, contact the Office of Planning and Program Development (OPPD) at DEEP.OPPD@ct.gov. For any other changes you must contact the specific program from which you hold a current DEEP license.

1. Registrant Name: Commanding Officer, U.S. Naval Submarine Base New London

Mailing Address: NAVFAC MIDLANT PWD NLON Env. Div., PO Box 400, Bldg 439 Tautog Avenue, Room 104

City/Town: Groton State: CT Zip Code: 06349

Business Phone: 860-694-3976 ext.:

Contact Person: Michael J. Brown Phone: 860-694-3976 ext.

*E-mail: michael.brown13@navy.mil

*By providing this e-mail address you are agreeing to receive official correspondence from the Department at this electronic address concerning the subject registration. Please remember to check your security settings to be sure you can receive e-mails from “ct.gov” addresses. Also, please notify the Department if your e-mail address changes.

a) Registrant Type (check one):

individual federal agency state agency municipality tribal

*business entity (*If a business entity complete i through iii):

i) check type: corporation limited liability company limited partnership limited liability partnership statutory trust Other:

ii) provide Secretary of the State business ID #: This information can be accessed at the Secretary of State's database (CONCORD).

DEEP-WPED-REG-029 3 of 225 Rev. 10/30/20

Part III: Registrant Information (continued)

iii) Check here if your business is NOT registered with the Secretary of State’s office.

Check here if any co-registrants. If so, attach additional sheet(s) with the required information as requested above.

b) Registrant's interest in property at which the proposed activity is to be located:

site owner option holder lessee easement holder operator other (specify):

2. Billing contact, if different than the registrant.

Name:

Mailing Address:

City/Town: State: Zip Code:

Business Phone: ext.:

Contact Person: Phone: ext.

E-mail:

3. Primary contact for Departmental correspondence and inquiries, if different than the registrant.

Name: Naval Submarine Base New London, PWD Env. Div.

Mailing Address: NAVFAC MIDLANT PWD NLON Env. Div., PO Box 400, Bldg 439 Tautog Avenue, Room 104

City/Town: Groton State: CT Zip Code: 06349

Business Phone: 860-694-2525 ext.:

Contact Person: Julie Oakes Phone: 860-694-2525 ext.

*E-mail: julie.oakes@navy.mil

*By providing this e-mail address you are agreeing to receive official correspondence from the Department, at this electronic address, concerning the subject registration. Please remember to check your security settings to be sure you can receive e-mails from “ct.gov” addresses. Also, please notify the Department if your e-mail address changes.

4. Facility Operator, if different than the registrant:

Name:

Mailing Address:

City/Town: State: Zip Code:

Business Phone: ext.:

Contact Person: Phone: ext.

E-mail:

5. Equipment Operator, if different than the registrant:

Name:

Mailing Address:

City/Town: State: Zip Code:

Business Phone: ext.:

Contact Person: Phone: ext.

E-mail:

DEEP-WPED-REG-029 4 of 225 Rev. 10/30/20

6. Facility Owner, if different than the registrant:

Name:

Mailing Address:

City/Town: State: Zip Code:

Business Phone: ext.:

Contact Person: Phone: ext.

E-mail:

7. Equipment Owner, if different than the registrant:

Name:

Mailing Address:

City/Town: State: Zip Code:

Business Phone: ext.:

Contact Person: Phone: ext.

E-mail:

8. Engineer(s) or other consultant(s) employed or retained to assist in preparing the registration or in designing or constructing the activity.

Name: AH Environmental Consultants, Inc.

Mailing Address: 144 Merchants Circle, Suite 201

City/Town: Hampstead State: NC Zip Code: 28443

Business Phone: 910-821-1017 ext.:

Contact Person: Brandon Ashton Phone: 910-821-1017 ext.

E-mail: bashton@ahenv.com

Service Provided: Assisted with preparing the SIU GP registration and associated attachments.

Check here if additional sheets are necessary, and label and attach them to this sheet.

9. The registrant is completing this Significant Industrial User GP registration form because (check all boxes that apply- continued on next page):

Registrant has discharges of metal finishing wastewater subject to 40 CFR 413 (Electroplating Point Source Category) or 40 CFR 433 (Metal Finishing Point Source Category) that will be authorized by the SIU GP and may or may not have process and non-process wastewater that is not subject to Categorical Pretreatment Standards that will be authorized by the SIU GP.

Registrant has discharges of metal finishing wastewater subject to 40 CFR 413 (Electroplating

Point Source Category) or 40 CFR 433 (Metal Finishing Point Source Category) that will be authorized by an individual pretreatment permit and has process and non-process wastewater that is not subject to Categorical Pretreatment Standards that will be authorized by the SIU GP.

Registrant is an Industrial User subject to Categorical Pretreatment Standards under 40 CFR 403.6 and 40 CFR chapter I, subchapter N other than 40 CFR 413 or 40 CFR 433 and has process and non-process wastewater that is not subject to Categorical Pretreatment Standards that will be authorized by the SIU GP.

Registrant is an Industrial User not subject to Categorical Pretreatment Standards and has discharges of process wastewater from the facility that have a cumulative maximum daily flow of 25,000 gallons per day or more.

DEEP-WPED-REG-029 5 of 225 Rev. 10/30/20

Registrant is an Industrial User with discharges that contribute a process wastestream which makes up five percent or more of the average dry weather hydraulic or organic capacity of the POTW treatment plant.

Facility has been designated an SIU by the commissioner on the basis that the Industrial User has a reasonable potential for adversely affecting the POTW’s operation.

10. List the Primary Standard Industrial Classification (SIC) Number of the operations carried out by the facility:

9711 - National Security

Part IV: Site Information

1. SITE NAME AND LOCATION

Is the name of the site the same as the name of the Registrant? Yes No

Name of Site: U.S. Naval Submarine Base New London (SUBASENLON)

Street Address or Location Description: Base Location: Corner of CT Route 12 and Crystal Lake Road

City/Town: Groton State: CT Zip Code: 06349

Tax Assessor's Reference: Map Block Lot

2. INDIAN LANDS: Is or will the facility be located on federally recognized Indian lands? Yes No

3. COASTAL BOUNDARY: Is the activity which is the subject of this registration located within the coastal boundary as delineated on DEEP approved coastal boundary maps? Yes No

If yes, and this registration is for a new authorization or a modification of an existing authorization where the physical footprint of the subject activity is modified, you must submit a Coastal Consistency Review Form (DEEP-APP-004) with your application as Attachment A.

Information on the coastal boundary is available at www.cteco.uconn.edu/map_catalog.asp (Select the town and then select coastal boundary. If the town is not within the coastal boundary you will not be able to select the coastal boundary map.) or the local town hall or on the “Coastal Boundary Map” available at DEEP Maps and Publications (860-424-3555).

If no, is the activity which is the subject of this registration located within the coastal area? (see town list in the instructions) Yes No

DEEP-WPED-REG-029 6 of 225 Rev. 10/30/20

Part IV: Site Information (continued)

For a renewal or modification of a general permit registration where there are no expansions to the external physical footprint of the facility including any collection, storage or treatment facilities referenced in the previous registration, skip this requirement and move to Question #5.

4. NATURAL DIVERSITY DATA BASE (NDDB) - ENDANGERED OR THREATENED SPECIES:

According to the most current "Natural Diversity Data Base Areas Maps”, will the activity which is the subject of this registration, including all impacted areas, be located within an area identified as, or otherwise known to be, a habitat for state listed endangered, threatened or special concern species?

Yes No Date of Map: June 2020

If yes, complete and submit a Request for NDDB State Listed Species Review Form (DEEP-APP-007) to the address specified on the form, prior to submitting this registration. Please note NDDB review generally takes 4 to 6 weeks and may require the registrant to produce additional documentation, such as ecological surveys, which must be completed prior to submitting this permit registration. A copy of the NDDB Determination response letter that has not expired must be submitted with this completed registration as Attachment B. Include a copy of any mitigation measures developed for this activity and approved by NDDB. Be aware that you must renew your NDDB Determination if it expires before project work commences.

For more information visit the DEEP website at Endangered-Species-ReviewData-Requests or contact the NDDB at deep.nddbrequest@ct.gov.

5. AQUIFER PROTECTION AREAS: Is the site located within a mapped Level A or Level B Aquifer Protection Area, as defined in CGS section 22a-354a through 22a-354bb?

Yes No If yes, check one: Level A or Level B

If Level A, are any of the regulated activities, as defined in RCSA section 22a-354i-1(34), conducted on this site? Yes No

If yes, and your business is not already registered with the Aquifer Protection Program, contact local aquifer protection agent or DEEP to take appropriate actions.

For more information on the Aquifer Protection Area Program visit the DEEP website at Aquifer Protection or contact the program at DEEP.AquiferProtection@ct.gov.

6. CONSERVATION OR PRESERVATION RESTRICTION: Is the property subject to a conservation or preservation restriction? Yes No

If Yes, proof of written notice of this registration to the holder of such restriction or a letter from the holder of such restriction verifying that this registration is in compliance with the terms of the restriction, must be submitted as Attachment C.

Part V: Additional Information and Supporting Documents

Check the applicable box below for each attachment being submitted with this registration form. When submitting any supporting documents, please label the documents as indicated in this part (e.g., Attachment A, etc.) and be sure to include the registrant's name as indicated on this registration form.

Attachment A: Coastal Consistency Review Form (DEEP-APP-004), if applicable.

Attachment B: A copy of the NDDB Determination response letter that has not expired, if applicable.

Include a copy of any mitigation measures developed for this activity and approved by NDDB. Do not submit any NDDB Preliminary Site Assessments with your application.

Be aware that you must renew your NDDB Determination if it expires before project work commences.

Attachment C: Conservation or Preservation Restriction Information: if applicable

Attachment D: Approval for Connection/Transport to a POTW (form attached)

DEEP-WPED-REG-029 7 of 225 Rev. 10/30/20

Part V: Additional Information and Supporting Documents (continued)

Attachment E: Site Plan: A site plan consisting of a legible drawing of the site. The site plan must indicate the relative locations of the below features:

All of the following must be checked:

North meridian Boundaries of the site All buildings Water bodies adjacent to the site and their names Roads adjacent to the site and their names Location of discharges included in this registration All monitoring points.

Attachment F: Discharge Information Form: For each discharge/monitoring location. (form attached)

Attachment G: Water Conservation: A description of the best management practices, such as conservation and reuse of water, minimization, substitution and reuse of chemicals, and other pollution prevention measures, implemented or to be implemented by the registrant to prevent or minimize any adverse environmental effects of the subject discharge.

Attachment H: Wastewater Treatment: An accurate description of any wastewater treatment processes, such as neutralization, oil/water separation, and precipitation of solids or metals, which the registrant utilizes or will utilize to achieve compliance with any of the effluent limitations specified in the SIU GP. This description must include a diagram which clearly shows all treatment units, monitoring equipment, and sampling locations.

Attachment I: Line Diagram: A line diagram of the water flow through the facility which clearly identifies:

All of the following must be checked:

the intake source (e.g. well, city water, river);

all points of chemical addition into any treatment units;

sampling and flow meter locations;

all separate production operations with intake and discharge points of each operation;

treatment units with intake and discharge points of each unit; and a water balance that indicates approximate average and maximum flows at intake and discharge points of all separate production operations, treatment units and between processes.

Attachment J: Process Flow Diagram: A diagram showing those processes generating wastewater must be included. The process flow diagram should identify:

All of the following must be checked:

each process step or tank, its work flow position, size, contents, ultimate disposal location and the discharge rate of its contents;

any treatment units integrated with a process; and countercurrent rinsing and the direction of the countercurrent rinsing.

Attachment K: Monitoring Waiver Request Form (attached)

Attachment L: Plan Checklists: Operation and Maintenance Plan and Spill Prevention and Control

Plan.

(attached)

DEEP-WPED-REG-029 8 of 225 Rev. 10/30/20

Part V: Additional Information and Supporting Documents (continued)

Attachment M: If the registrant is an SIU due to metal finishing operations, a Solvent Management

Plan may be necessary: (attached)

Check only one:

No Total Toxic Organic compounds are used or generated on site, or introduced into the wastewaters that are the subject of this application.

A Solvent Management Plan has been submitted with this registration that contains all applicable information listed in the Solvent Management Plan Checklist and Appendix D of the SIU General Permit.

Attachment N: Subscriber Agreement (portal.ct.gov/deep/netdmr)

Attachment O: A summary of analytical data from the previous two years for the renewal of an existing registration for a discharge previously authorized by the General Permit for the Discharge of Wastewaters from Categorical Industrial Users to a Publicly Owned Treatment Works or the General Permit for Miscellaneous Discharges of Sewer Compatible Wastewater. (attached)

Attachment P: If any pollutant identified as an emerging contaminant is currently or reasonably known to have been handled, stored, released or disposed of at the site where the subject wastewater originates, the subject wastewater shall also be analyzed to determine the concentration of such emerging contaminants(s) if an analytical method for such pollutant has been approved pursuant to 40 CFR 136.

Attachment Q: For Water Treatment Facilities Discharging Water Treatment Wastewater with Total

Suspended Solids Concentrations in Excess of 600 mg/l, the Water Treatment Wastewater and Residuals Management Plan required by Section 4(c)(2)(T) of the General Permit for the Discharge of Wastewaters from Significant Industrial Users.

Attachment R: Request for Variance (attached)

DEEP-WPED-REG-029 14 of 225 Rev. 10/30/20

Attachment F: Discharge Information

The below information must be provided for each discharge to a sanitary sewer lateral and for which monitoring samples will be taken. Attach additional sheets as necessary. See instructions for further guidance.

1. Discharge Serial Number (DSN): 201-1

2. Date discharge was/will be initiated: 1989

3. Discharge Location: Building 520 – Fire Fighting Training Unit (FFTU)

4. Monitoring Location: Sample tap on the discharge piping (downstream of effluent pumps)

5. Name of Receiving POTW: Groton

a. Are additional POTWs conveying the wastewater through their sanitary sewer system? yes no

b. If yes to 5.a., please list the additional applicable POTWs:

6. Method by which POTW will receive discharge: Sanitary Sewer Transported by truck

7. Discharge Category(ies)

a. Discharge is metal finishing wastewater consisting of the following metal finishing subcategories as defined by 40 CFR 413 and 433:

b. Discharge is composed of process and/or non-process wastewater not subject to Categorical

Pretreatment Standards and consists of the following categories (check all that apply):

Process Wastewater Non-process Wastewater Commercial laundry wastewater

Contact cooling & heating wastewater

Cutting and grinding wastewater

Food processing wastewater

Non-destruct testing rinsewater

Printing and photo processing wastewater

Reverse osmosis reject water

Tumbling or cleaning of parts wastewater

Water treatment wastewater

Other process wastewater (describe in #10)

Air compressor condensate & blowdown

Boiler blowdown

Building maintenance wastewater

Fire suppression system testing wastewater

Hydrostatic pressure testing wastewater

Noncontact cooling water

Potable water system main. or sampling ww

Swimming pool wastewaters

Vehicle maintenance wastewater

Other non-process wastewater (describe in #10)

8. Flow Information

a. Average Daily Flow (gpd): 8,000 b. Maximum Daily Flow (gpd): 9,999

c. Design Flow (gpd): N/A d. Design Flow (gpm): 80-120 gpm per pump

e. Is the wastewater discharging continuously throughout operating hours except for infrequent shut downs for maintenance, process changes or other similar activities? Yes No

If yes, indicate:

Average number of hours per day of the discharge: N/A

Maximum number of hours per day of the discharge: N/A

DEEP-WPED-REG-029 15 of 225 Rev. 10/30/20

Attachment F: Discharge Information (continued)

DSN #: 201-1 (continued)

If no (e.g., batch, intermittent, or seasonal discharges), indicate:

Average number of hours per discharge event: approx. 1-2

Maximum number of hours per discharge event: approx. 2-3

The average number of discharge events per day: maximum of 1 discharge per day

9. Method of Flow Measurement: Flow meter and operation logs

10. A detailed description of the authorized discharge which must include a detailed description of the processes or activities generating the discharge(s). When different processes or activities produce different discharges, please be specific about each. Attach additional sheets if necessary.

**This discharge was previously covered under MISC GP Permit #CTMIU0130 as DSN 201-1. Prior to 30 October 2020, this discharge was covered under Pretreatment Permit #SP0000915 as DSN 001-1**

Building 520 houses the Fire Fighter Trainer Unit (FFTU). The FFTU generates fire and smoke, and sailors fight Class A, B, and C type fires with equipment, techniques, and chemicals similar to those on submarines. Discharges originate from the following processes within the FFTU:

- The Fire Suppression Trainer Room discharges “mock AFFF” made from Calsoft L-40, bicarbonate, carbon dioxide from hand-held fire extinguishers, and “mock smoke” made from Kidde FT Smokemaster fluid.

- Fire fighting training clothes washer (laundry detergent, mock AFFF, mock smoke, and floor dust)

- Emergency air breathing system (compressor condensate, mask disinfectant)

- Eye wash station (Town of Groton potable water)

- Emergency shower (Town of Groton potable water)

- A utility sink (Town of Groton potable water, Calsoft L-40, Simple Green, hand soap, and mop rinse water)

- Maintenance/rinsing (using Simple Green degreaser)

- Disinfection of self-contained breathing masks using iodine and a commercial disinfectant

(Betadine)

Two effluent pumps transfer fire fighting training wastewater to the SUBASENLON sanitary sewer collection system. Pump specifications for both new pumps are as follows: Pump Make: Crane Pumps & Syst ems; Pump Product/Model Number: 7163 20361999; Pump Size: 2 x 2 x 7.25; Pump Impeller Diameter: 6.25"; Motor Make/Model: Baldor Reliance Super E; Pump Size: 1 HP (60 Hz, 3 phase).

The nature of this discharge allows for process-owner controlled discharge quantities; therefore, the process owner has committed to limiting this discharge to less than 10,000 gpd as the maximum allowable daily flow.

Notes:

(1) Calsoft L-40 is sodium alkylbenzene sulfonate, that is pressurized and foamed with the aid of sodium bicarbonate.

(2) Kidde FT Smokemaster (mock smoke fluid) is 70% propylene glycol and <1% ethylene glycol.

(3) The use of siliconized bicarbonate was terminated in 2012.

DEEP-WPED-REG-029 16 of 225 Rev. 10/30/20

11. A list of the substances used or added to the wastewater, including but not limited to those substances for which effluent limits are specified in Sections 5A(a) or 5B(a)of the SIU GP and those substances listed in Appendix B Table II, III and V or Appendix D of section 22a-430-4 of the Regulations of Connecticut State Agencies. Any such substances shall be identified by their generic chemical names and Chemical Abstract System (CAS) number.

Mock smoke fluid / Kidde FT Smokemaster (70% propylene glycol [CAS No. 57-55-6] & <1% ethylene glycol [CAS No. 107-21-1])

Mock foam / Calsoft L-40 (sodium alkylbenzene sulfonate [CAS No. 68411-30-3])

Detergent (Tide) – no toxic or harzardous substances

Degreaser (Simple Green) – no toxic or harzardous substances

Disinfectant (Betadine) – no toxic or harzardous substances

12. Analytical Data

a. Analytical Data for New, Previously Unpermitted Discharges (if the discharge is an existing discharge, skip to 12.b.)

Please provide any supporting calculations or information from similar discharges to project expected discharge characteristics including all pollutants and their concentrations expected to be present in the discharge. Following the issuance of the Approval of Registration under this general permit, the Permittee will be required to sample the discharge(s) authorized under the Approval of Registration within 30 days of initiating the discharge, conduct wastewater analyses as indicated in the Approval of Registration, and submit for the commissioner’s review a completed discharge analysis from the application for registration under this general permit.

N/A (existing discharge)

DEEP-WPED-REG-029 17 of 225 Rev. 10/30/20

12.b. Metal Finishing Wastewater Discharge Analysis (if the discharge is process or non-process wastewater not subject to Categorical Pretreatment Standards, skip to 12.c.)

Section 12.b. is not applicable to this discharge.

DEEP-WPED-REG-029 18 of 225 Rev. 10/30/20

12.c. Process and Non-process Wastewater Discharge Analysis To demonstrate compliance with the effluent limitations in Section 5B(a) of the SIU GP, all registrants discharging process and non-process wastewater not subject to Categorical Pretreatment Standards must complete a Discharge Analysis for each discharge using analytical data from at least one sample taken within the last six months that is representative of typical daily operations and one sample representative of anticipated maximum effluent pollutant concentration(s).

Analytical data from both samples shall be provided for all pollutants listed in the table below (same as Table 5B-2 from the SIU GP) per discharge category, as well as, all pollutants that are known or suspected to be present in the discharge and are listed in section 22a-430-4 Appendix B or D of the Regulations of Connecticut State Agencies. All analyses must be performed in accordance with 40 CFR 136.

[For discharges previously authorized by the General Permit for Miscellaneous Discharges of Sewer Compatible Wastewater, also include analytical data from the previous two years as Attachment O.]

Discharge Category

Air Compressor Condensate &

Blowdown

Boiler

Contact Cooling &

Heating Water

Cutting & Grinding

Non-Destruct Testing

Rinsewater

Printing (Photo-

Processing1)

Tumbling or Cleaning

Water Treatment

Commercial Laundry

Food Process-ing

Hydrostatic Pressure Testing

Noncontact cooling water, Reverse Osmosis Reject Water

Other Process Wastewater, Non-process Wastewater

Temperature X X X X X4 X pH X X X X X X X X X X X X X

BOD5 X X X X X X

COD X X X X X X

Total Suspended Solids

X X X X X X X X X X X

Total Kjeldahl Nitrogen

X X X X X

Nitrate-nitrite Nitrogen

X X X X X

Phosphorus(3), total X X X X X X X X X X X X X

Oil & grease, TPH

X

X X X X X X X

Oil & grease, total X Volatile Organic Compounds, total

X

Aluminum X2 Arsenic X2 Cadmium, total X Chromium, total X X Copper, total X X X X X X X X X Iron, total X Lead, total X X X X X X X X X Nickel, total X X X Silver, total X Zinc, total X X X X X X X X X

1 Required monitoring for a photoprocessing discharge is silver and pH only. Refer to specific instructions at Section 5B(b)(5)(B).

2 Aluminum and arsenic monitoring shall be required only for wastewater associated with alum treatment.

3 Phosphorus monitoring shall be required only for discharges being received by a POTW listed in Appendix F2(excluding commercial laundries which must always monitor for phosphorus).

4 Temperature monitoring is not required for reverse osmosis reject water discharges.

DEEP-WPED-REG-029 19 of 225 Rev. 10/30/20

12.c. Process and Non-process Wastewater Discharge Analysis (continued)

DSN 201-1: Fire Fighting Training Unit (FFTU)

Discharge Category: Other Non-Process Wastewater

Sample ID Collection Date Parameters Result SIU GP Limit Units

B-520 FFTU PTP DSN 001-1 10/27/2020

MBAS 2.43 - mg/L pH 7.37 5.5 to 11.5 S.U.

METALS, TPH, TSS, PH 11/24/2020

Copper 0.028 2 mg/L Lead 0.001 0.5

Zinc 0.037 2

Oil & Grease, TPH ND (<1.4) 100

Total Suspended Solids (TSS) ND (<3.3) 600 pH 7.14 5.5 to 11.5 S.U.

DSN 201-1 FFTU 1/12/2021

Copper 0.023 2 mg/L

Lead ND (<0.001) 0.5

Zinc 0.062 2

BOD/5 day ND (<3.5) 600

COD 23 1200

Nitrite-N ND (<0.010) 40

Nitrate-N 0.14 40

Nitrogen Tot Kjeldahl (TKN) 0.85 40

Oil & Grease, TPH ND (<1.4) 100

Total Suspended Solids (TSS) 4 600 pH 6.77 5.5 to 11.5 S.U.

Temperature 45.7 - °F

DSN 201-1 discharge analyses notes: One complete sample was collected on 1/12/2021, and one mostly complete sample was collected on 11/24/2020. The parameters missing for the 11/24/2021 sample were Temperature, BOD/5-day, COD, TKN, and Nitrate-Nitrite. Given the influent sources noted in Attachment F items 10 & 11 above, these parameters are not expected to be present in high concentrations.

Additionally, SUBASENLON considers the low concentrations of these parameters in the 1/12/2021 sample as representative of this discharge.

DEEP-WPED-REG-029 20 of 225 Rev. 10/30/20

The below information must be provided for each discharge to a sanitary sewer lateral and for which monitoring samples will be taken. Attach additional sheets as necessary. See instructions for further guidance.

1. Discharge Serial Number (DSN): 202-1

2. Date discharge was/will be initiated: Unknown – existing discharge

3. Discharge Location: Buildings 40 and 478 – Water Jet Cutter Tanks

4. Monitoring Location: Water jet cutter tanks or temporary hose used to drain the tanks

5. Name of Receiving POTW: Groton

a. Are additional POTWs conveying the wastewater through their sanitary sewer system? yes no

b. If yes to 5.a., please list the additional applicable POTWs:

6. Method by which POTW will receive discharge: Sanitary Sewer Transported by truck

7. Discharge Category(ies)

a. Discharge is metal finishing wastewater consisting of the following metal finishing subcategories as

Process Wastewater Non-process Wastewater Commercial laundry wastewater

Contact cooling & heating wastewater

Cutting and grinding wastewater

Food processing wastewater

Non-destruct testing rinsewater

Printing and photo processing wastewater

Reverse osmosis reject water

Tumbling or cleaning of parts wastewater

Water treatment wastewater

Other process wastewater (describe in #10)

Air compressor condensate & blowdown

Boiler blowdown

Building maintenance wastewater

Fire suppression system testing wastewater

Hydrostatic pressure testing wastewater

Noncontact cooling water

Potable water system main. or sampling ww

Swimming pool wastewaters

Vehicle maintenance wastewater

Other non-process wastewater (describe in #10)

a. Average Daily Flow (gpd): 1,500 b. Maximum Daily Flow (gpd): 4,000 (2 full units)

c. Design Flow (gpd): N/A d. Design Flow (gpm): N/A

e. Is the wastewater discharging continuously throughout operating hours except for infrequent shut downs

If yes, indicate:

Average number of hours per day of the discharge:

Maximum number of hours per day of the discharge:

DEEP-WPED-REG-029 21 of 225 Rev. 10/30/20

DSN #: 202-1 (continued)

Average number of hours per discharge event: approx. 1-2

Maximum number of hours per discharge event: approx. 1-2

The average number of discharge events per day: <1 (typically there is a maximum of 1 discharge per unit annually)

9. Method of Flow Measurement: Stopwatch and bucket

10. A detailed description of the authorized discharge which must include a detailed description of the different discharges, please be specific about each. Attach additional sheets if necessary.

**This discharge was previously covered under MISC GP Permit #CTMIU0130 as DSN 202-1**

The activity generating the discharge is a water jet cutter machine located in Building 40 and two more machines located in Building 478.

The approximate full capacity of the main operating tank on the water jet cutter machines are listed below. It is provided in the event SUBASENLON needs to do a full discharge. Complete emptying of a tank is a normal practice, but it is not anticipated to equal the full tank capacity due to the accumulated solids inside the tank. Frequency of discharge should not exceed once annually (per each unit).

Make/Model Location Capacity

OMAX 60120 Bldg. 478 2,000 gallons

OMAX 60120 Bldg. 478 2,000 gallons

OMAX 60120 Bldg. 40 2,000 gallons

Plates and sheets of the following materials are cut with the water jet: carbon steel, nickel-copper, nickel-copper-aluminum, chrome-molybdenum, nickel-chrome-molybdenum, and corrosive-resistant stainless steel and aluminum.

The parts are cut using high velocity water mixed with an abrasive and sprayed through the applicator nozzle. The wastewater is discharged to the local POTW using a retrofitted hose and sump pump to a sanitary sewer manhole exterior to the building.

Water jet cutter units generate a highly filtered wastewater. Wastewater is reused through a closed loop polishing system (Ebbco Inc. metal Working Filtration), which consists of one (1) prefilter, one

(1) pump suction strainer, four (4) filters, filter pressure gauge alarms for each filter, a Total Dissolved Solids (TDS) alarm, and an ozone generator alarm.

11. A list of the substances used or added to the wastewater, including but not limited to those substances for which effluent limits are specified in Sections 5A(a) or 5B(a)of the SIU GP and those substances listed in Appendix B Table II, III and V or Appendix D of section 22a-430-4 of the Regulations of Connecticut State Agencies. Any such substances shall be identified by their generic chemical names and Chemical Abstract System (CAS) number.

Garnet abrasive (Almandine and Pyrope Garnet, CAS No. 1302-62-1) is fed from a hopper and mixed with water and utilized as the cutting medium. No other substances are added, however, the raw metal materials listed in Item 10 are cut by the machine.

DEEP-WPED-REG-029 22 of 225 Rev. 10/30/20

a. Analytical Data for New, Previously Unpermitted Discharges (if the discharge is an existing discharge, Please provide any supporting calculations or information from similar discharges to project expected discharge characteristics including all pollutants and their concentrations expected to be present in the discharge. Following the issuance of the Approval of Registration under this general permit, the Permittee will be required to sample the discharge(s) authorized under the Approval of Registration within 30 days of initiating the discharge, conduct wastewater analyses as indicated in the Approval of Registration, and submit for the commissioner’s review a completed discharge analysis from the application for registration

DEEP-WPED-REG-029 23 of 225 Rev. 10/30/20

12.b. Metal Finishing Wastewater Discharge Analysis (if the discharge is process or non-process wastewater

DEEP-WPED-REG-029 24 of 225 Rev. 10/30/20

To demonstrate compliance with the effluent limitations in Section 5B(a) of the SIU GP, all registrants discharging process and non-process wastewater not subject to Categorical Pretreatment Standards must complete a Discharge Analysis for each discharge using analytical data from at least one sample taken within the last six months that is representative of typical daily operations and one sample representative of anticipated maximum effluent pollutant concentration(s).

Analytical data from both samples shall be provided for all pollutants listed in the table below (same as Table 5B-2 from the SIU GP) per discharge category, as well as, all pollutants that are known or suspected to be present in the discharge and are listed in section 22a-430-4 Appendix B or D of the Regulations of Connecticut State Agencies. All analyses must be performed in accordance with 40 CFR 136.

[For discharges previously authorized by the General Permit for Miscellaneous Discharges of Sewer Compatible Wastewater, also include analytical data from the previous two years as Attachment O.]

Contact Cooling &

Heating Water

Cutting & Grinding

Non-Destruct Testing

Rinsewater

Printing (Photo-

Processing1)

Tumbling or Cleaning

Testing

Noncontact cooling water, Reverse Osmosis Reject Water

Other Process Wastewater, Non-process Wastewater

Temperature X X X X X4 X pH X X X X X X X X X X X X X

BOD5 X X X X X X

COD X X X X X X

Total Suspended Solids

X X X X X X X X X X X

Total Kjeldahl Nitrogen

X X X X X

Nitrate-nitrite Nitrogen

X X X X X

Oil & grease, total X Volatile Organic Compounds, total

X

Aluminum X2 Arsenic X2 Cadmium, total X Chromium, total X X Copper, total X X X X X X X X X Iron, total X Lead, total X X X X X X X X X Nickel, total X X X Silver, total X Zinc, total X X X X X X X X X

1 Required monitoring for a photoprocessing discharge is silver and pH only. Refer to specific instructions at Section 5B(b)(5)(B).

2 Aluminum and arsenic monitoring shall be required only for wastewater associated with alum treatment.

3 Phosphorus monitoring shall be required only for discharges being received by a POTW listed in Appendix F2(excluding commercial laundries which must always monitor for phosphorus).

DEEP-WPED-REG-029 25 of 225 Rev. 10/30/20

DSN 202-1: Water Jet Cutter Tanks

Discharge Category: Cutting & Grinding

Sample ID Collection Date Parameters Result SIU GP Limit Units

MISC OTHER B-478 Water Jet Cutter - B001BH

5/1/2018

Oil & Grease, TPH ND (<1.05) 100 mg/L

Total Suspended Solids (TSS) ND (<5.00) 600

Copper ND (<0.0020) 2

Lead ND (<0.0030) 0.5

Zinc 0.386 2

Zirconium ND (<0.0050) 2 pH 8.09 5.5 to 11.5 S.U.

WATER JET CUTTER 12/14/2020

Aluminum 0.287 -mg/L

Chromium 0.004 2

Copper 0.007 2

Iron 0.206 -

Molybdenum 0.004 4

Nickel 0.003 2

Lead ND (<0.001) 0.5

Zinc 0.015 2 pH 7.9 5.5 to 11.5 S.U.

Oil & Grease, TPH ND (<1.4) 100 mg/L

Total Suspended Solids (TSS) ND (<3.3) 600

Temperature 21.6 - °C

DSN 202-1 discharge analyses notes: One complete sample was collected on 12/14/2020, and one mostly complete sample was collected on 5/1/2018. The process generating the wastewater has not changed since the 5/1/2018 sample was collected; therefore, even though it was collected more than 6 months ago, it is still representative of this discharge.

The parameters missing for the 5/1/2018 sample were chromium and nickel. SUBASENLON considers the low concentrations of both parameters in the 12/14/2020 sample as representative of this discharge.

DEEP-WPED-REG-029 26 of 225 Rev. 10/30/20

The below information must be provided for each discharge to a sanitary sewer lateral and for which monitoring samples will be taken. Attach additional sheets as necessary. See instructions for further guidance.

1. Discharge Serial Number (DSN): 203-1

3. Discharge Location: Building 29 – Power Plant Oil/Water Separator Wastewater

4. Monitoring Location: Outlet piping from the oil/water separator

5. Name of Receiving POTW: Groton

a. Are additional POTWs conveying the wastewater through their sanitary sewer system? yes no

b. If yes to 5.a., please list the additional applicable POTWs:

6. Method by which POTW will receive discharge: Sanitary Sewer Transported by truck

7. Discharge Category(ies)

a. Discharge is metal finishing wastewater consisting of the following metal finishing subcategories as

Process Wastewater Non-process Wastewater Commercial laundry wastewater

Contact cooling & heating wastewater

Cutting and grinding wastewater

Food processing wastewater

Non-destruct testing rinsewater

Printing and photo processing wastewater

Reverse osmosis reject water

Tumbling or cleaning of parts wastewater

Water treatment wastewater

Other process wastewater (describe in #10)

Air compressor condensate & blowdown

Boiler blowdown

Building maintenance wastewater

Fire suppression system testing wastewater

Hydrostatic pressure testing wastewater

Noncontact cooling water

Potable water system main. or sampling ww

Swimming pool wastewaters

Vehicle maintenance wastewater

Other non-process wastewater (describe in #10)

a. Average Daily Flow (gpd): 6,700 (2-yr avg) b. Maximum Daily Flow (gpd): 43,200

e. Is the wastewater discharging continuously throughout operating hours except for infrequent shut downs

If yes, indicate:

DEEP-WPED-REG-029 27 of 225 Rev. 10/30/20

DSN #: 203-1 (continued)

Average number of hours per discharge event: 5

Maximum number of hours per discharge event: 24

The average number of discharge events per day: Varies, the duration and frequency depend on fluid levels inside the reclamation (REC) tank

10. A detailed description of the authorized discharge which must include a detailed description of the different discharges, please be specific about each. Attach additional sheets if necessary.

**This discharge was previously covered under MISC GP Permit #CTMIU0130 as DSN 203-1. Prior to 30 October 2020, this discharge was covered under Pretreatment Permit #SP0000915 as DSN 003-1**

The processes that contribute influents to this treatment system include oil tank condensation, utility trench wastewater from industrial operations inside the power plant, incidental stormwater, groundwater, steam condensate and pipe condensate, groundwater from dewatering the inside fuel tank containment area, and groundwater seepage/leak from the north and south tunnels of the power plant to the power plant trough, steam condensate return, air compressor condensate wastewater, and dewatering waters (previously permitted under DSN 013 of SP0000915).

These wastewaters are collected in the REC tank in Building 29 and then processed through an above-ground, indoor, gravity oil/water separator. The floated oil fraction from the separator is sent back to the REC tank. The treated underflow water fraction (i.e., oil/water separator effluent) is discharged to the sanitary sewer.

When there is sufficient quantity of used oil the REC tank, the oil is removed and transported off base by a contractor.

The current specifications of the above-ground gravity O/WS inside Building 29 are as follows:

- Manufacturer: Mercer International, Inc.

- Model: Compliance Master MI-A30

- Oil/Water Separation Tank Capacity: 280 gallons

- Coalescing Media Type: Multi Pack Coalescing Plates (304 Stainless Steel)

11. A list of the substances used or added to the wastewater, including but not limited to those substances for which effluent limits are specified in Sections 5A(a) or 5B(a)of the SIU GP and those substances listed in Appendix B Table II, III and V or Appendix D of section 22a-430-4 of the Regulations of Connecticut State Agencies. Any such substances shall be identified by their generic chemical names and Chemical Abstract System (CAS) number.

Steam condensate return contains a corrosion inhibitor consisting of:

- Cyclohexylamine (CAS No. 108-91-8)

- Diethylaminoethanol (CAS No. 100-37-8)

- Morpholine (CAS No. 110-91-8)

The waste stream is also intended to contain oil tank condensation (no. 2 fuel oil), air compressor condensate (lubricating oil), trench wastewater (no. 2 fuel oil, lubricating oils), and groundwater.

DEEP-WPED-REG-029 28 of 225 Rev. 10/30/20

a. Analytical Data for New, Previously Unpermitted Discharges (if the discharge is an existing discharge, Please provide any supporting calculations or information from similar discharges to project expected discharge characteristics including all pollutants and their concentrations expected to be present in the discharge. Following the issuance of the Approval of Registration under this general permit, the Permittee will be required to sample the discharge(s) authorized under the Approval of Registration within 30 days of initiating the discharge, conduct wastewater analyses as indicated in the Approval of Registration, and submit for the commissioner’s review a completed discharge analysis from the application for registration

DEEP-WPED-REG-029 29 of 225 Rev. 10/30/20

12.b. Metal Finishing Wastewater Discharge Analysis (if the discharge is process or non-process wastewater

DEEP-WPED-REG-029 30 of 225 Rev. 10/30/20

To demonstrate compliance with the effluent limitations in Section 5B(a) of the SIU GP, all registrants discharging process and non-process wastewater not subject to Categorical Pretreatment Standards must complete a Discharge Analysis for each discharge using analytical data from at least one sample taken within the last six months that is representative of typical daily operations and one sample representative of anticipated maximum effluent pollutant concentration(s).

Analytical data from both samples shall be provided for all pollutants listed in the table below (same as Table 5B-2 from the SIU GP) per discharge category, as well as, all pollutants that are known or suspected to be present in the discharge and are listed in section 22a-430-4 Appendix B or D of the Regulations of Connecticut State Agencies. All analyses must be performed in accordance with 40 CFR 136.

[For discharges previously authorized by the General Permit for Miscellaneous Discharges of Sewer Compatible Wastewater, also include analytical data from the previous two years as Attachment O.]

Contact Cooling &

Heating Water

Cutting & Grinding

Non-Destruct Testing

Rinsewater

Printing (Photo-

Processing1)

Tumbling or Cleaning

Testing

Noncontact cooling water, Reverse Osmosis Reject Water

Other Process Wastewater, Non-process Wastewater

Temperature X X X X X4 X pH X X X X X X X X X X X X X

BOD5 X X X X X X

COD X X X X X X

Total Suspended Solids

X X X X X X X X X X X

Total Kjeldahl Nitrogen

X X X X X

Nitrate-nitrite Nitrogen

X X X X X

Oil & grease, total X Volatile Organic Compounds, total

X

Aluminum X2 Arsenic X2 Cadmium, total X Chromium, total X X Copper, total X X X X X X X X X Iron, total X Lead, total X X X X X X X X X Nickel, total X X X Silver, total X Zinc, total X X X X X X X X X

1 Required monitoring for a photoprocessing discharge is silver and pH only. Refer to specific instructions at Section 5B(b)(5)(B).

2 Aluminum and arsenic monitoring shall be required only for wastewater associated with alum treatment.

3 Phosphorus monitoring shall be required only for discharges being received by a POTW listed in Appendix F2(excluding commercial laundries which must always monitor for phosphorus).

DEEP-WPED-REG-029 31 of 225 Rev. 10/30/20

DSN 203-1: Power Plant Oil/Water Separator Wastewater

Discharge Category: Other Non-Process Wastewater

Sample ID Collection Date Parameters Result SIU GP Limit Units

B-29 Rec Tank OWS - E002AF 10/14/2020

MBAS (Surfactants) ND (<0.500) -mg/L

Copper 0.0025 2

Lead ND (<0.0030) 0.5

Nickel ND (<0.0050) 2

Zinc 0.0076 2

Oil & Grease, TPH ND (<1.58) 100 pH range (25 measurements) 7.01 - 7.25 5.5 to 11.5 S.U.

B-29 Rec Tank OWS - E002AF 11/4/2020

MBAS (Surfactants) 0.122 -mg/L

Chromium ND (<0.0020) 2 Copper ND (<0.0020) 2 Lead ND (<0.0030) 0.5 Nickel ND (<0.0050) 2 Zinc 0.0203 2 Total Suspended Solids (TSS) ND (<3.13) 600

Oil & Grease, TPH

ND (<1.67)

ND (<1.76)

ND (<1.50)

ND (<1.50)

ND (<1.50)

ND (<1.58)

pH range (25 measurements) 6.55 - 7.30 5.5 to 11.5 S.U.

DEEP-WPED-REG-029 32 of 225 Rev. 10/30/20

DSN 203-1: Power Plant Oil/Water Separator Wastewater

Discharge Category: Other Non-Process Wastewater

Sample ID Collection Date Parameters Result SIU GP Limit Units

B-29 Rec Tank OWS - E002AF 12/2/2020

Chromium ND (<0.0020) 2 mg/L

Copper 0.0023 2

Nickel ND (<0.0050) 2

Zinc 0.0092 2

Total Suspended Solids (TSS) ND (<3.13) 600

Oil & Grease, TPH

ND (<1.67)

ND (<1.67)

ND (<1.50)

ND (<1.58)

ND (<1.50)

ND (<1.67)

pH range (25 measurements) 6.85 - 7.41 5.5 to 11.5 S.U.

Cyclohexylamine ND (<10.0) - mg/L

B-29 Rec Tank OWS - E002AF

1/6/2021

Total Suspended Solids (TSS) ND (<3.13) 600 mg/L

Nitrate-N 0.180 40 Nitrite-N 0.0182 40 Total Kjeldahl Nitrogen (TKN) ND (<0.200) 6.43 Chemical Oxygen Demand (COD) 29.4 1200 BOD/5 day ND (<2.00) 600 Temperature 34.7 - °C pH 7.45 5.5 to 11.5 S.U.

Chromium ND (<0.0020) 2 mg/L

Copper 0.0027 2 Lead ND (<0.0030) 0.5 Nickel ND (<0.0050) 2 Zinc 0.0141 2

1/7/2021 Oil & Grease, TPH (6 measurements) ND (<1.58) 100 pH range (24 measurements) 7.11 - 7.18 5.5 to 11.5 S.U.

DSN 203-1 discharge analyses notes: One complete sample was collected on 1/6/2021 through 1/7/2021, and two mostly complete samples were taken on 11/4/2020 & 12/2/2020. Missing parameters for the 11/4/2020 & 12/2/2020 samples were Temperature, BOD/5-day, COD, TKN, and Nitrate-Nitrite. SUBASENLON considers the low concentrations of these parameters in the 1/6/2021 sample as representative of this discharge.

DEEP-WPED-REG-029…