SIU GP 20210524 - DRAFT 3.pdf

Permit No. CTSIU0026 1

79 Elm Street • Hartford, CT 06106-5127 www.ct.gov/deep Affirmative Action/Equal Opportunity Employer

APPROVAL OF REGISTRATION:

GENERAL PERMIT FOR THE DISCHARGE OF WASTEWATERS FROM

SIGNIFICANT INDUSTRIAL USERS (SIU)

ISSUED TO:

Permittee Address: Location Address:

U.S. Naval Submarine Base New London U.S. Naval Submarine Base New London NAVFAC MIDLANT PWD NLON Env. Div. (SUBASENLON) PO Box 400 Corner of Route 12 and Crystal Lake Rd 439 Tautog Avenue, Room 104 Groton/Ledyard, CT 06349 Groton, CT 06349

Application No.: 202105134

Permit No.: CTSIU0026

Permit Expiration Date: October 30, 2025

In accordance with Section 22a-430b of the Connecticut General Statutes (“CGS”) as amended, the Commissioner of Energy and Environmental Protection (“the Commissioner”) hereby approves a Registration filed by U.S. Naval Submarine Base New London (“Permittee”), in accordance with Section 4(h) of the General Permit for the Discharge of Wastewaters from Significant Industrial Users, issued on October 30, 2020 (“SIU GP”). This Approval of Registration is based on Application No. 202105134, received on April 28, 2021, additional supporting submittals received on May 6, 2021 and May 17, 2021, and the administrative record established in the processing of such application.

Classifications of wastewater include to:

A maximum of 9,999 gpd (8,000 gpd average) of fire fighting training wastewater (non-PFAS), A maximum of 4,000 gpd (1,500 gpd average) of water jet cutting wastewater (on an annual basis), A maximum of 43,200 gpd (6,700 gpd average) of pretreated oily wastewater treated at Building 29 – Power Plant.

A maximum of 45,000 gpd (average 6,500 gpd) of pretreated oily wastewater generated from various sources, including vessels, at SUBASENLON and treated at Building 553, A maximum of 5,000 gpd of non-contact cooling water from the draining of existing inventoried chillers and new chillers to be installed or inventoried, A maximum of 500 gpd of air compressor condensate from locations throughout SUBASENLON, A maximum of 3,200 gpd of vehicle maintenance wastewater from Building 107 (South)-Fire Department, Building 460-Auto Hobby Shop, and Building 611-MWR POV Wash Rack, A maximum of 999 gpd (320 gpd average) of hydrostatic pressure testing chamber drain wastewater from Building 478 and other locations at SUBASENLON, A maximum of 9,500 gpd (<3,500 gpd average) of pretreated stormwater from the fuel farm, A maximum of 15,000 gpd (900 gpd average) of Building 29-North utility trench dewatering

DRAFT

Permit No. CTSIU0026 2 wastewater composed of stormwater, steam condensate and pipe condensate, A maximum of 999 gpd (< 100 gpd average) of small boat wash wastewater generated between Buildings 476 and 554, A maximum of 30,000 gpd of boiler blowdown and wastewater and steam condensate from existing base-wide boilers (Nos. 1S and 4) plus new boilers to be installed by May 2022 (tentatively identified as Boilers 7, 8, and 9), A maximum of 999 gpd of boiler blowdown and maintenance wastewater from multiple natural gas or oil fired boilers used to heat individual buildings, A maximum of 302 gpd (151 gallons per batch, infrequently) of parts cleaner wastewater, A maximum of 9,500 gpd of cooling tower blowdown from multiple building at SUBASENLON, A maximum of 150,000 gpd of swimming pool draining and 6,500 gpd of swimming pool filter backwash generated at Buildings 592, 465, 141, and 120, A maximum of 12,500 gpd (2,500 gpd average quarterly) of fire suppression system testing wastewater generated from multiple buildings at SUBASENLON, A maximum of 900 gpd (estimated) of building maintenance wastewater generated from multiple buildings at SUBASENLON, A maximum of 5,000 gpd (estimated) of infiltrated groundwater and stormwater, potentially including condensate potable water generated from multiple buildings at SUBASENLON, A maximum of 20,000 gpd (4,700 gpd average) of water softener regeneration wastewater from the “Low Temperature” water softener system, A maximum of 72,000 gpd (24,700 gpd average) of reverse osmosis reject wastewater generated at the Building 29 power plant, A maximum of 4,000 gpd of water softener (resin polisher) regeneration wastewater generated at the Building 29 steam condensate re-use system, A maximum of 11,000 gpd (2,600 gpd, estimated) of natural gas condensate generated from exhaust and heat exchangers from multiple buildings at SUBASENLON, A maximum of 4,800 gpd (1,600 gpd per cycle average) of granular activated carbon backwash/regeneration wastewater at Building 29, A maximum of 9,000 gpd (estimated) of ice machine condenser cooling, condensate and miscellaneous drippings from ice machines from multiple buildings at SUBASENLON both currently active and planned, A maximum daily flow of 400 gpd (estimated) of health care related wastewaters from the Building 449 Health Clinic, A maximum of 1,100 gpd (estimated) of dental care wastewater from the Building 575 Dental Clinic, A maximum of 10 gpd (estimated) of cutting and grinding wastewater from the Building 575 Dental Clinic dental mold making operation, A maximum of 50 gpd (estimated) of food processing wastewater from the cleaning of refrigerated box trailers at Building 175, A maximum of 900 gpd (estimated) of decanted water generated from catch basin cleaning conducted at catch basins throughout SUBASENLON, The wastewater shall be discharged in accordance with the terms and conditions of the SIU GP and the following conditions:

(A) Definitions. The definitions of the terms used in this Approval of Registration to discharge under the SIU GP shall be the same as the definitions as described in Appendix A of the SIU GP, Section 22a-423 of the CGS and Section 22a-430-3(a) of the Regulations of Connecticut State Agencies (“RCSA”), unless otherwise indicated below. As used in this Approval of Registration to discharge under the SIU GP, the definitions of the following terms shall apply:

"----" in the limits column on the monitoring table means a limit is not specified, but a value must

Permit No. CTSIU0026 3 be reported on the Discharge Monitoring Report (“DMR”).

"Annually", in the context of a sampling frequency, means the sample must be collected in the month of June.

“average daily flow” means the average of all total daily flows measured during the reporting period.

“composite” as a sample type in this permit means a collection of aliquots taken at least once every four hours over a full operating day.

“gpd” means gallons per day.

“gpm” means gallons per minute.

“lb/d” means pounds per day.

“Maximum Daily Flow” means the greatest volume of wastewater to be discharged over an operating day.

"NA" as a monitoring table abbreviation means "not applicable".

“ND” as a monitoring table abbreviation means “non-detectable.”

"NR" as a monitoring table abbreviation means "not required".

"Quarterly", in the context of a sampling frequency, means samples must be collected in the months of March, June, September and December.

"Range During Month" or "RDM", as a sample type, means the lowest and the highest values of all of the monitoring data for the reporting month.

"Range During Sampling" or "RDS", as a sample type, means the maximum and minimum of all values recorded as a result of analyzing each grab sample of; 1) a Composite Sample, or 2) the grab samples used to determine a Grab Sample Average. For those permittees with continuous monitoring and recording pH meters, Range During Sampling shall mean the maximum and minimum readings recorded with the continuous monitoring device during the collection of a Composite Sample or the grab samples used to determine Grab Sample Average.

"Semi-Annually", in the context of a sampling frequency, means samples must be collected in the months of June and December.

“S.U.” means Standard Units.

“TKN” means Total Kjeldahl Nitrogen.

"Twice per Month", in the context of sample frequency, means two samples per calendar month collected no less than twelve (12) days apart.

“μg/l” means micrograms per liter.

Permit No. CTSIU0026 4

(B) Sampling Requirements. All samples shall be comprised of only those wastewaters described in the table(s) below and in compliance with the requirements of Section 5A(b) and 5B(b) of the SIU GP, as applicable.

(C) Effluent limitations and monitoring requirements. The discharge shall not exceed and shall otherwise conform to the specific terms and conditions of Section 5, 5A and 5B of the SIU GP, as applicable, and shall be further restricted by and monitored in accordance with the table(s) described below:

PERMIT #CTSIU0026 Page 5

Table A (NetDMR Reporting Required)

Discharge Serial Number: 201-1 Monitoring Location: 1 Wastewater Description: Fire Fighting Training (B520). Firefighting training clothes washer, emergency air breathing system, eye wash station, emergency shower, utility sink, and maintenance wastewater

Monitoring Location Description: From the sample line of the outfall pipe from the discharge pump

Discharge is to: Town of Groton Water Pollution Control Facility

PARAMETER

UNITS

FLOW/TIME BASED MONITORING INSTANTANEOUS MONITORING

Average Daily Limit

Maximum Daily Limit

Sample/Reporting Frequency2

Sample Type or Measurement to be Reported

Instantaneous Limit or Required Range

Sample/ Reporting Frequency2

Sample Type or Measurement to be Reported

BOD4 mg/l NA NA NR NA 600.0 Quarterly Grab COD mg/l NA NA NR NA 1,200 Quarterly Grab Copper, total mg/l NA NA NR NA 2.0 Quarterly Grab Flow, average daily1 gpd ---- NA Quarterly Daily Flow NA NR NA

Flow, maximum daily1 gpd NA 9,999 Quarterly Daily Flow NA NR NA

Flow, day of sampling gpd NA 9,999 Quarterly Daily Flow NA NR NA

Lead, total mg/l NA NA NR NA 0.50 Quarterly Grab Hydrocarbons, total petroleum3 mg/l NA NA NR NA 100.0 Quarterly Grab

Nitriate-Nitirite Nitrogen mg/l NA NA NR NA 40.0 Quarterly Grab pH, day of sampling

S.U. NA NA NR NA 5.0 – 12.0 Quarterly Range During Sample

(RDS)

pH, minimum S.U. NA NA NR NA 5.0 Quarterly Grab pH, maximum S.U. NA NA NR NA 12.0 Quarterly Grab Solids, total suspended mg/l NA NA NR NA 600.04 Quarterly Grab

TKN mg/l NA NA NR NA 40.0 Quarterly Grab Zinc, total mg/l NA NA NR NA 2.0 Quarterly Grab Table Footnotes:

1 For this parameter, the Permittee shall maintain at the facility a record of the Total Daily Flow for each day of discharge and shall report either the Average Daily Flow and the Maximum Daily Flow for each sampling month or Flow Day of Sampling as applicable.

2 Reporting shall be in accordance with Section 5B of the SIU GP.

3 Monitoring shall use EPA Method 1664, Rev. A reporting as Total Petroleum Hydrocarbons.

4 This pollutant concentration may be exceeded provided that the total mass loading (flow x concentration) of such pollutant discharged to the receiving POTW does not exceed 100.0 lbs/day or 2% of the POTW’s design loading, whichever is less.

PERMIT #CTSIU0026 Page 6

Table B—(NetDMR Reporting Not Required)

Discharge Serial Number: 202-1 Monitoring Location: 1

Wastewater Description: Water Jet Cutter in Buildings 40 and 478

Monitoring Location Description: Water jet cutter tanks or temporary hose used to drain the water jet cutter tanks as applicable

Average Daily Limit

Maximum Daily Limit

Sample/Reporting Frequency2

Sample Type or Measurement to be Reported

Instantaneous Limit or Required Range

Sample/ Reporting Frequency2

Sample Type or Measurement to be Reported

Aluminum, total mg/l NA NA NR NA NA Annually Grab Copper, total mg/l NA NA NR NA 2.0 Annually Grab Chromium, total mg/l NA NA NR NA 2.0 Annually Grab Flow, day of sampling1 gpd NA 4,000 NA Daily Flow NA NR NA

Iron, total mg/l NA NA NR NA NA Annually Grab Lead, total mg/l NA NA NR NA 0.50 Annually Grab Molybdenum, total mg/l NA NA NR NA 4.0 Annually Grab Nickel, total mg/l NA NA NR NA 2.0 Annually Grab Hydrocarbons, total petroleum3 mg/l NA NA NR NA 100.0 Annually Grab pH, day of sampling S.U. NA NA NR NA 5.0 – 12.0 Annually Grab Solids, total suspended mg/l NA NA NR Grab 600.04 Annually Grab

Zinc, total mg/l NA NA NR Grab 2.0 Annually Grab Table Footnotes:

1 For this parameter, the Permittee shall maintain at the facility a record of the Total Daily Flow for each day of discharge and shall report either the Average Daily Flow and the Maximum Daily Flow for each sampling month or Flow Day of Sampling as applicable.

NOTE THAT DISCHARGE IS ANNUAL

2 Reporting shall be in accordance with Section 5B of the SIU GP.

Annual sampling shall be conducted from one (1) tank drain each year if a discharge occurs during any calendar year. Results shall be included as an attachment to the DMR for the sample period during which such discharge occurs.

3 Analysis shall use EPA Method 1664, Rev. A reporting as Total Petroleum Hydrocarbons.

4 This pollutant concentration may be exceeded provided that the total mass loading (flow x concentration) of such pollutant discharged to the receiving POTW does not exceed 100.0

PERMIT #CTSIU0026 Page 7

Table C—(NetDMR Reporting Required)

Discharge Serial Number: : 203-1 Monitoring Location: 1 Wastewater Description: Oil Water Separation Treatment Wastewater (B029). Wastewater from 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 ground water 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.

Monitoring Location Description: Outlet piping from the oil/water separator

Average Daily Limit

Maximum Daily Limit

Sample/Reporting Frequency2

Sample Type or Measurement to be Reported

Instantaneous Limit or Required Range

Sample/ Reporting Frequency2

Sample Type or Measurement to be Reported

BOD4

COD

Copper, total mg/l NA NA NR NA 2.0 Monthly Grab Flow, average daily1 gpd ---- NA Monthly Daily Flow NA NR NA Flow, maximum daily1 gpd NA 43,200 Monthly Daily Flow NA NR NA

Flow, day of sampling gpd NA 43,200 Monthly Daily Flow NA NR NA

Lead, total mg/l NA NA NR NA 0.50 Monthly Grab Hydrocarbons, total petroleum3 mg/l NA NA NR NA 100.0 Monthly Grab

Nitriate-Nitirite Nitrogen mg/l NA NA NR NA 40.0 Monthly Grab pH, day of sampling S.U. NA NA NR NA 5.0 – 12.0 Monthly Range During Sample

(RDS)

pH, minimum S.U. NA NA NR NA 5.0 Monthly Grab pH, maximum S.U. NA NA NR NA 12.0 Monthly Grab Solids, total suspended mg/l NA NA NR NA 600.04 Monthly Grab

TKN mg/l NA NA NR NA 40.0 Monthly Grab Zinc, total mg/l NA NA NR NA 2.0 Monthly Grab Table Footnotes:

1 For this parameter, the Permittee shall maintain at the facility a record of the Total Daily Flow for each day of discharge and shall report either the Average Daily Flow and the Maximum Daily Flow for each sampling month or Flow Day of Sampling as applicable.

2 Reporting shall be in accordance with Section 5B of the SIU GP.

3 Monitoring shall use EPA Method 1664, Rev. A reporting as Total Petroleum Hydrocarbons.

4 This pollutant concentration may be exceeded provided that the total mass loading (flow x concentration) of such pollutant discharged to the receiving POTW does not exceed 100.0

PERMIT #CTSIU0026 Page 8

Table D—(NetDMR Reporting Required)

Discharge Serial Number: 204-1 Monitoring Location: 1 Wastewater Description: Oily water and wastewater treatment facility (B553). Bilge oily wastewater (seawater, water leakage from machinery, and freshwater wash downs), condenser tube wastewater, fuel compensating, ballast potable water, maintenance activities of the REC Tank, and vehicle equipment washing wastewaters (high pressure washing of cranes, tanker trucks (exteriors), engines, pulleys and wire ropes, and cart vehicles), tank bottom condensate water from petroleum storage tanks, plus similarly impacted oily waters generated from on-base activities.

Monitoring Location Description: Final outfall pipe after the flow meter

Average Daily Limit

Maximum Daily Limit

Sample/Reporting Frequency2

Sample Type or Measurement to be Reported

Instantaneous Limit or Required Range

Sample/ Reporting Frequency2

Sample Type or Measurement to be Reported

Cadmium, total mg/l NA NA NA NA 0.5 Monthly Grab Chromium, total mg/l NA NA NR NA 2.0 Monthly Grab Copper, total mg/l NA NA NR Grab 2.0 Monthly Grab Cyanide, total mg/l NA NA NR Grab 1.2 Monthly Grab Flow, average daily1 gpd NA NA Continuous/Monthly Daily Flow NA NR NA

Flow, maximum daily1 gpd NA 45,000 Continuous/Monthly Daily Flow NA NR NA

Flow, day of sampling gpd NA 45,000 Monthly Daily Flow NA NR NA

Nickel, total mg/l NA NA NR NA 2.0 Monthly Grab Hydrocarbons, total petroleum3 mg/l NA NA NR NA 100.0 Monthly Grab pH, day of sampling

S.U. NA NA NR NA 5.0 – 12.0 Monthly RDS pH, minimum S.U. NA NA NR NA 5.0 Continuous/Monthly Continuous pH, maximum S.U. NA NA NR NA 12.0 Continuous/Monthly Continuous Phosphorus, Total (as P) mg/l NA NA NR NA NA Monthly Grab

Silver, total mg/l NA NA NR NA 0.5 Monthly Grab Surfactants mg/l NA NA NR NA NA Quarterly Grab Volatile Organic Compounds mg/l NA NA NR NA 5.0 Quarterly Grab

Zinc, total mg/l NA NA NR Grab 2.0 Monthly Grab

PERMIT #CTSIU0026 Page 9

Table Footnotes:

1 For this parameter, the Permittee shall maintain at the facility a record of the Total Daily Flow for each day of discharge and shall report either the Average Daily Flow and the Maximum Daily Flow for each sampling month or Flow Day of Sampling as applicable.

2 Reporting shall be in accordance with Section 5B of the SIU GP.

3 Analysis shall use EPA Method 1664, Rev. A reporting as Total Petroleum Hydrocarbons.

Remarks:

The Permittee shall collect all vertical launch system after launch, hydro blast, used and waste oil from submarines and steam phosphate wastes and dispose of these materials through a licensed hauler in a manner acceptable to the Commissioner.

TABLE E - NetDMR Reporting Not Required Discharge Serial Number: 205-1 Monitoring Location: 1 Wastewater Description: Non-contact cooling wastewater from the draining of existing inventoried chillers and new chillers to be installed or inventoried.

Monitoring Location Description: From flow equalization tank outfall pipe located in the sanitary sewer manhole Discharge is to: The Town of Groton Water Pollution Control Facility

FLOW/TIME BASED MONITORING

INSTANTANEOUS MONITORING

Average Monthly Limit

Maximum Daily Limit

Sample/Reporting Frequency 2

Sample Type or Measurement to be reported

Instantaneous limit or required range

Sample/ Reporting Frequency2

Sample Type or measurement to be reported

Flow, Maximum Daily1 gpd NA 5,000 NA Daily Flow NA NR NA Flow, Day of sampling gpd NA 5,000 NA Daily Flow NA NR NA Hydrocarbons, total petroleum4 mg/l NA NA NA Grab Sample

Average

100.0 NA Grab

pH, Day of sampling S.U. NA NA NR NA 5.0 – 10.0 NA Grab

Table I Footnotes:

1 For this parameter, the Permittee shall maintain at the facility a record of the Total Daily Flow for each day of discharge and shall report either the Average Daily Flow and the Maximum Daily Flow for each sampling month or Flow Day of Sampling as applicable.

2 The first entry in this column is the ‘Sample Frequency’. If this entry is not followed by a ‘Reporting Frequency’ and the ‘Sample Frequency’ is more frequent than monthly then the ‘Reporting Frequency’ is monthly. If the ‘Sample frequency’ is specified as monthly, or less frequent, then the ‘Reporting Frequency’ is the same as the ‘Sample Frequency’.

4 Analysis shall use EPA Method 1664, Rev. A reporting as Total Petroleum Hydrocarbons.

PERMIT #CTSIU0026 Page 10

PERMIT #CTSIU0026 Page 11

TABLE F - NetDMR Reporting Not Required Discharge Serial Number: 206-1 Monitoring Location: 1 Wastewater Description: Air compressor condensate from locations throughout SABASENLON Monitoring Location Description: Multiple locations throughout SUBASELONM

Limit

Maximum Daily Limit

Sample/Reporting Frequency 2

Sample Type or Measurement to be reported

Instantaneous limit or required range

Sample/ Reporting Frequency2

Sample Type or measurement to be reported

Flow, Maximum Daily1 gpd NA 500 NA Daily Flow NA NR NA Flow, Day of sampling gpd NA 500 NA Daily Flow NA NR NA pH, Day of sampling S.U. NA NA NR NA 5.0 – 10.0 NR Grab

Table I Footnotes:

1 For this parameter, the Permittee shall maintain at the facility a record Maximum Daily Flow and Flow, Day of Sampling for each sampling month.1 For this parameter, the Permittee shall maintain at the facility a record of the Total Daily Flow for each day of discharge and shall report either the Average Daily Flow and the Maximum Daily Flow for each sampling month or Flow Day of Sampling as applicable.

2 The first entry in this column is the ‘Sample Frequency’. If this entry is not followed by a ‘Reporting Frequency’ and the ‘Sample Frequency’ is more frequent than monthly then the ‘Reporting Frequency’ is monthly. If the ‘Sample frequency’ is specified as monthly, or less frequent, then the ‘Reporting Frequency’ is the same as the ‘Sample Frequency’.

PERMIT #CTSIU0026 Page 12

TABLE G - NetDMR Reporting Not Required Discharge Serial Number: 207-1 Monitoring Location: 1 Wastewater Description: Vehicle Maintenance Wastewater from Building 107 (South)-Fire Department, Building 460-Auto Hobby Shop, and Building 611-MWR POV Wash Rack Monitoring Location Description: Oil/water separator outlet piping

Limit

Maximum Daily Limit

Sample/Reporting Frequency 2

Sample Type or Measurement to be reported

Instantaneous limit or required range

Sample/ Reporting Frequency2

Sample Type or measurement to be reported

Flow, Maximum Daily1 gpd NA 3,200 Annually Daily Flow NA NR NA Flow, Day of sampling gpd NA 3,200 Annually Daily Flow NA NR NA Hydrocarbons, total petroleum4 mg/l NA NA NA NA 100.0 Annually Grab pH, Day of sampling S.U. NA NA NR NA 5.0 – 10.0 Annually Grab

Table I Footnotes:

1 For this parameter, the Permittee shall maintain at the facility a record of the Total Daily Flow for each day of discharge and shall report either the Average Daily Flow and the Maximum Daily Flow for each sampling month or Flow Day of Sampling as applicable.

2 The first entry in this column is the ‘Sample Frequency’. If this entry is not followed by a ‘Reporting Frequency’ and the ‘Sample Frequency’ is more frequent than monthly then the ‘Reporting Frequency’ is monthly. If the ‘Sample frequency’ is specified as monthly, or less frequent, then the ‘Reporting Frequency’ is the same as the ‘Sample Frequency’.

PERMIT #CTSIU0026 Page 13

Table F—(NetDMR Reporting Required)

Discharge Serial Number: : 211-1 Monitoring Location: 1 Wastewater Description: Treated stormwater from the truck loading/off-loading area at building 549 and the above-ground storage tanks (AST) containment area, groundwater infiltration, and Diesel Fuel Marine (DFM) stormwater containment area from B549 Monitoring Location Description: From flow equalization tank outfall pipe located in the sanitary sewer manhole

Average Daily Limit

Maximum Daily Limit

Sample/Reporting Frequency2

Sample Type or Measurement to be Reported

Instantaneous Limit or Required Range

Sample/ Reporting Frequency2

Sample Type or Measurement to be Reported

BOD4

COD

Copper, total mg/l NA NA NR NA 2.0 Quarterly Grab Flow, average daily1 gpd ---- NA Quarterly Daily Flow NA NR NA

Flow, maximum daily1 gpd NA 9,500 Quarterly Daily Flow NA NR NA

Flow, day of sampling gpd NA 9,500 Quarterly Daily Flow NA NR NA

Lead, total mg/l NA NA NR NA 0.50 Quarterly Grab Hydrocarbons, total petroleum3 mg/l NA NA NR NA 100.0 Quarterly Grab

Nitriate-Nitirite Nitrogen

TABLE E - NetDMR Reporting Not Required Discharge Serial Number: 210-1 Monitoring Location: 1 Wastewater Description: Up to 999 gpd of Hydrostatic Pressure Testing Wastewater from the testing chamber drain at Building 478 and other locations at SUBASENLON Monitoring Location Description: From the sample port located in a pipe to the sewer line

Limit

Maximum Daily Limit

Sample/Reporting Frequency 2

Sample Type or Measurement to be reported

Instantaneous limit or required range

Sample/ Reporting Frequency2

Sample Type or measurement to be reported

Remarks:

No monitoring required unless requested by the Town of Groton WPCF

PERMIT #CTSIU0026 Page 14 pH, day of sampling

S.U. NA NA NR NA 5.0 – 12.0 Quarterly Range During Sample

(RDS)

pH, minimum S.U. NA NA NR NA 5.0 Quarterly Grab pH, maximum S.U. NA NA NR NA 12.0 Quarterly Grab Solids, total suspended mg/l NA NA NR NA 600.04 Quarterly Grab

TKN Quarterly Zinc, total mg/l NA NA NR NA 2.0 Monthly Grab Table Footnotes:

1 For this parameter, the Permittee shall maintain at the facility a record of the Total Daily Flow for each day of discharge and shall report either the Average Daily Flow and the Maximum Daily Flow for each sampling month or Flow Day of Sampling as applicable.

2 Reporting shall be in accordance with Section 5B of the SIU GP.

3 Monitoring shall use EPA Method 1664, Rev. A reporting as Total Petroleum Hydrocarbons.

4 This pollutant concentration may be exceeded provided that the total mass loading (flow x concentration) of such pollutant discharged to the receiving POTW does not exceed 100.0

PERMIT #CTSIU0026 Page 15

PERMIT # CTSIU0026 Page 16

TABLE G - NetDMR Reporting Not Required Discharge Serial Number: 212-1 Monitoring Location: 1 Wastewater Description: Utility trench dewatering wastewaters (stormwater, groundwater, steam condensate and pipe condensate) to the Town of Groton POTW Monitoring Location Description: Building 29 North trench (L-10) sump discharge to the sanitary sewer

Limit

Maximum Daily Limit

Sample/Reporting Frequency 2

Sample Type or Measurement to be reported

Instantaneous limit or required range

Sample/ Reporting Frequency2

Sample Type or measurement to be reported

Copper, Total mg/l NA NA NR NA --- Quarterly Grab Flow, Maximum Daily1 gpd NA 15,000 Continuous /

Quarterly Daily Flow NA NR NA

Flow, Day of sampling gpd NA 15,000 Quarterly Daily Flow NA NR NA Iron, Total mg/l NA NA NR NA --- Quarterly Grab Lead, Total mg/l NA NA NR NA 0.5 Quarterly Grab Nickel, Total mg/l NA NA NR NA 2.0 Quarterly Grab Hydrocarbons, total petroleum3 mg/l NA NA NR NA 100 Quarterly Grab pH, Day of sampling S.U. NA NA NR NA 5.0 – 12.0 Quarterly Grab Zinc, Total mg/l NA NA NR NA 2.0 Quarterly Grab Table J Footnotes:

CONDESNATE REQUIREMENTS used here 1 For this parameter, the Permittee shall maintain at the facility a record of the Total Daily Flow for each day of discharge and shall report either the Average Daily Flow and the Maximum Daily Flow for each sampling month or Flow Day of Sampling as applicable. Maximum daily flow shall be as determined by the Town of Groton POTW.

2 The first entry in this column is the ‘Sample Frequency’. If this entry is not followed by a ‘Reporting Frequency’ and the ‘Sample Frequency’ is more frequent than monthly then the ‘Reporting Frequency’ is monthly. If the ‘Sample frequency’ is specified as monthly, or less frequent, then the ‘Reporting Frequency’ is the same as the ‘Sample Frequency’.

3 Analysis shall use EPA Method 1664, Rev. A reporting as Total Petroleum Hydrocarbons.

PERMIT # CTSIU0026 Page 17

TABLE H - NetDMR Reporting Not Required Discharge Serial Number: 214-1 Monitoring Location: 1 Wastewater Description: Small boat wash wastewater2 Monitoring Location Description: Wash Rack Separator Drain Pipe (Between Buildings B476 and B554)

Limit

Maximum Daily Limit

Sample/Reporting Frequency

Sample Type or Measurement to be reported

Instantaneous limit or required range

Sample/ Reporting Frequency

Sample Type or measurement to be reported

Copper, Total mg/l NA NA NR NA --- Annually Grab Flow, Maximum Daily1 gpd 999 --- Continuous /

Annually Daily Flow NA NR NA

Flow, Day of sampling gpd 999 --- Annually Daily Flow NA NR NA Lead, Total mg/l NA NA NR NA 0.5 Annually Grab Nickel, Total mg/l NA NA NR NA 2.0 Annually Grab Hydrocarbons, total petroleum3 mg/l NA NA NR NA 150 Annually Grab pH, Day of sampling S.U. NA NA NR NA 5.0 – 10.0 Annually Grab Zinc, Total mg/l NA NA NR NA 2.0 Annually Grab Table J Footnotes:

1 For this parameter, the Permittee shall maintain at the facility a record of the Total Daily Flow for each day of discharge and shall report either the Average Daily Flow and the Maximum Daily Flow for each sampling month or Flow Day of Sampling as applicable.

2 Prior to washing, all equipment shall be inspected for evidence of excessive loose paint or oil. Gross solids shall be manually collected prior to washing. Oily water shall be isolated and collected for off-site disposal or management through DSN 204 of this Approval.

3 Analysis shall use EPA Method 1664, Rev. A reporting as Total Petroleum Hydrocarbons.

Remarks:

The stormwater diversion valve shall closed to isolate the wash rack from discharge to stormwater at all times that pressure washing occurs and shall remain closed until the wash rack area is inspected and documented as free from debris or oil from pressure washing activities and detergent residues are fully rinsed to DSN 214.

PERMIT # CTSIU0026 Page 18

TABLE I - NetDMR Reporting Required Discharge Serial Number: 215-1 Monitoring Location: 1 Wastewater Description: Boiler blowdown and wastewater and steam condensate from existing base-wide boilers (Nos. 1S and 4) plus new boilers to be installed by May 2022 (tentatively identified as Boilers 7, 8, and 9), Monitoring Location Description: Boiler blowdown drain(s)

Limit

Maximum Daily Limit

Sample/Reporting Frequency 2

Sample Type or Measurement to be reported

Instantaneous limit or required range

Sample/ Reporting Frequency2

Sample Type or measurement to be reported

Copper, Total mg/l NA NA NR NA 2.0 Quarterly Grab Flow, Maximum Daily1 gpd NA 30,000 Quarterly Daily Flow NA NR NA Flow, Day of sampling gpd NA 30,000 Quarterly Daily Flow NA NR NA Lead, Total mg/l NA NA NR NA 0.5 Quarterly Grab Nickel, Total mg/l NA NA NR NA --- Quarterly Grab Hydrocarbons, total petroleum4 mg/l NA NA NR NA 100 Quarterly Grab pH, Day of sampling S.U. NA NA NR NA 5.0 – 12.0 Quarterly Grab Solids, total suspended mg/l NA NA NR NA 600.03 Quarterly Grab Zinc, Total mg/l NA NA NR NA 2.0 Quarterly Grab Table J Footnotes:

1 For this parameter, the Permittee shall maintain at the facility a record of the Total Daily Flow for each day of discharge and shall report either the Average Daily Flow and the Maximum Daily Flow for each sampling month or Flow Day of Sampling as applicable.

2 The first entry in this column is the ‘Sample Frequency’. If this entry is not followed by a ‘Reporting Frequency’ and the ‘Sample Frequency’ is more frequent than monthly then the ‘Reporting Frequency’ is monthly. If the ‘Sample frequency’ is specified as monthly, or less frequent, then the ‘Reporting Frequency’ is the same as the ‘Sample Frequency’.

A representative sample collected from one (1) boiler, selected randomly, may be used to satisfy each quarterly sampling event so long as each boiler is sampled at least once every 3 years

3 This pollutant concentration may be exceeded provided that the total mass loading (flow x concentration) of such pollutant discharged to the receiving POTW does not exceed 100.0 lbs/day or 2% of the POTW’s design loading, whichever is less.

PERMIT # CTSIU0026 Page 19

TABLE J - NetDMR Reporting Not Required Discharge Serial Number: 216-1 Monitoring Location: 1 Wastewater Description: Boiler Blowdown from boilers used to heat specific buildings throughout the U.S. Naval Submarine Base- New London that do not exceed 999 gpd cumulatively Monitoring Location Description: Boiler blowdown drain(s) Discharge is to: The Town of Groton Water Pollution Control Facility

PERMIT # CTSIU0026 Page 20

Table K — NetDMR Reporting Not Required

Discharge Serial Number: 217-1 Monitoring Location: 1

Wastewater Description: Parts Cleaning Wastewaters from Ultrasonic and Pressurized Water Parts Cleaning Machines in Building B88

Monitoring Location Description: Parts cleaner tank drain

Average Daily Limit

Maximum Daily Limit

Sample/Reporting Frequency2

Sample Type or Measurement to be Reported

Instantaneous Limit or Required Range

Sample/ Reporting Frequency2

Sample Type or Measurement to be Reported

Aluminum, total mg/l NA NA NR NA NA Annually Grab Copper, total mg/l NA NA NR NA 2.0 Annually Grab Chromium, total mg/l NA NA NR NA 2.0 Annually Grab Flow, day of sampling gpd NA NA NR NA 302 Annually Tank size

Iron, total mg/l NA NA NR NA NA Annually Grab Lead, total mg/l NA NA NR NA 0.50 Annually Grab Molybdenum, total mg/l NA NA NR NA 4.0 Annually Grab Nickel, total mg/l NA NA NR NA 2.0 Annually Grab Hydrocarbons, total petroleum3 mg/l NA NA NR NA 100.0 Annually Grab pH, day of sampling S.U. NA NA NR NA 5.0 – 12.0 Annually Grab Solids, total suspended mg/l NA NA NR NA 600.04 Annually Grab

Zinc, total mg/l NA NA NR NA 2.0 Annually Grab Table Footnotes: DISCRETIONARY LOW FLOW 1 For this parameter, the Permittee shall maintain at the facility a record of the Total Daily Flow for each day of discharge and shall report either the Average Daily Flow and the Maximum Daily Flow for each sampling month or Flow Day of Sampling as applicable. Flows may be based on estimated volumes of tanks drained.

2 Reporting shall be in accordance with Section 5B of the SIU GP.

Annual sampling shall be conducted during the month of July. Sampling waived for 5 years after first year if all parameters comply with permit limits from a representative sample collected from any one parts cleaner discharge.

3 Analysis shall use EPA Method 1664, Rev. A reporting as Total Petroleum Hydrocarbons.

4 This pollutant concentration may be exceeded provided that the total mass loading (flow x concentration) of such pollutant discharged to the receiving POTW does not exceed 100.0

PERMIT # CTSIU0026 Page 21

TABLE L - NetDMR Reporting Required Discharge Serial Number: 218-1 Monitoring Location: 1 Wastewater Description: Cooling tower blowdown from multiple buildings, including but not limited to Nos. 439, 449, 455, 474, 488, 492, 499, 518, 519, 533 (2 units), and 560.

Monitoring Location Description: Cooling tower blowdown

Limit

Maximum Daily Limit

Sample/Reporting Frequency 2

Sample Type or Measurement to be reported

Instantaneous limit or required range

Sample/ Reporting Frequency

Sample Type or measurement to be reported

Copper, Total mg/l NA NA NR NA 2.0 NR Grab Flow, Maximum Daily1 gpd NA 9,500 NR Daily Flow NA NR NA Flow, Day of sampling gpd NA 9,500 NR Daily Flow NA NR NA Lead, Total mg/l NA NA NR NA 0.5 NR Grab pH, Day of sampling S.U. NA NA NR NA 5.0 – 12.0 NR Grab Solids, total suspended mg/l NA NA NR NA 600.03 NR Grab Zinc, Total mg/l NA NA NR NA 2.0 NR Grab Table J Footnotes:

1 For this parameter, the Permittee shall maintain at the facility a record of the Total Daily Flow for each day of discharge and shall report either the Average Daily Flow and the Maximum Daily Flow for each sampling month or Flow Day of Sampling as applicable. Flow measurement shall be based on operational conditions, water use, equipment specifications, and flow meter(s) as applicable. Flow records shall report the combined flow from all units as a single daily flow.

PERMIT # CTSIU0026 Page 22

TABLE M - NetDMR Reporting Not Required Discharge Serial Number: 219-1 Monitoring Location: 1 Wastewater Description: Swimming Pool Wastewaters from Buildings 120 (Recreational Pool), 141 (Decompression Chamber), 465 (Damage Control Trainer) and 592 (Escape Trainer) Monitoring Location Description: Composite of Swimming Pool Drains

Limit

Maximum Daily Limit

Sample/Reporting Frequency 2

Sample Type or Measurement to be reported

Instantaneous limit or required range

Sample/ Reporting Frequency2

Sample Type or measurement to be reported

Flow, Maximum Daily (for Pool Draining)1 gpd NA 150,000 Annually Daily Flow NA NR NA

Flow, Day of sampling (for backwash)2 gpd NA 4,000 Annually Daily Flow NA NR NA pH, Day of sampling S.U. NA NA NR NA 5.0 – 12.0 Annually Grab Solids, total suspended mg/l NA NA NR Grab 600.03 Annually Grab Table J Footnotes:

1 The Permittee shall notify and get approval from the Town of Groton WPCF of the anticipated volume of discharge prior to commencing any total or partial draining of the swimming pools identified in the Wastewater Description.

Flow measurement shall be based on operational conditions, water use, equipment specifications, and flow meter(s) as applicable. Flow records shall report the combined flow from all units as a single daily flow.

2 The first entry in this column is the ‘Sample Frequency’. If this entry is not followed by a ‘Reporting Frequency’ and the ‘Sample Frequency’ is more frequent than monthly then the ‘Reporting Frequency’ is monthly. If the ‘Sample frequency’ is specified as monthly, or less frequent, then the ‘Reporting Frequency’ is the same as the ‘Sample Frequency’.

A representative sample of one filter backwash shall be collected annually from the backwash of the filtration system for Building 120 (Recreational Pool) during the month of July.

3 This pollutant concentration may be exceeded provided that the total mass loading (flow x concentration) of such pollutant discharged to the receiving POTW does not exceed 100.0 lbs/day or 2% of the POTW’s design loading, whichever is less. Sampling for this parameter shall be collected annually in July from a representative sample collected from the backwash of the filtration system for Building 120 (Recreational Pool).

TABLE N - NetDMR Reporting Not Required Discharge Serial Number: 220-1 Monitoring Location: 1 Wastewater Description: A maximum of 12,500 gpd (2,500 gpd average quarterly) of fire suppression system testing wastewater generated from multiple buildings at SUBASENLON Monitoring Location Description: Not Applicable Discharge is to: The Town of Groton Water Pollution Control Facility

Permit No. CTSIU0026

TABLE O - NetDMR Reporting Not Required Discharge Serial Number: 221-1 Monitoring Location: 1 Wastewater Description: A maximum of 900 gpd (estimated) of building maintenance wastewater generated from multiple buildings at SUBASENLON Monitoring Location Description: Not Applicable Discharge is to: The Town of Groton Water Pollution Control Facility

TABLE P - NetDMR Reporting Not Required Discharge Serial Number: 222-1 Monitoring Location: 1 Wastewater Description: A maximum of 5,000 gpd (estimated) of infiltrated groundwater and stormwater, potentially including condensate potable water generated from multiple buildings at

SUBASENLON

Monitoring Location Description: Not Applicable Discharge is to: The Town of Groton Water Pollution Control Facility

TABLE Q - NetDMR Reporting Not Required Discharge Serial Number: 223-1 Monitoring Location: 1 Wastewater Description: Water softener regeneration wastewater from the “Low Temperature” water softener system (Building 29) Monitoring Location Description: Low temperature softener discharge drain

Limit

Maximum Daily Limit

Sample/Reporting Frequency 2

Sample Type or Measurement to be reported

Instantaneous limit or required range

Sample/ Reporting Frequency2

Sample Type or measurement to be reported

Flow, Maximum Daily1 gpd NA 20,000 Annually Daily Flow NA NR NA Flow, Day of sampling gpd NA 20,000 Annually Daily Flow NA NR NA pH, Day of sampling S.U. NA NA NR NA 5.0 – 12.0 Annually Grab Table J Footnotes:

1 For this parameter, the Permittee shall maintain at the facility a record of the Total Daily Flow for each day of discharge and shall report either the Average Daily Flow and the Maximum Daily Flow for each sampling month or Flow Day of Sampling as applicable. Flow measurement shall be based on operational conditions, water use and equipment specifications if installation and operation of flow meters is not practical for these discharge flows.

2 The first entry in this column is the ‘Sample Frequency’. If this entry is not followed by a ‘Reporting Frequency’ and the ‘Sample Frequency’ is more frequent than monthly then the ‘Reporting Frequency’ is monthly. If the ‘Sample frequency’ is specified as monthly, or less frequent, then the ‘Reporting Frequency’ is the same as the ‘Sample Frequency’.

A representative sample collected from one (1) boiler, selected randomly, may be used to satisfy each quarterly sampling event so long as each boiler is sampled at least once every 3 years

3 This pollutant concentration may be exceeded provided that the total mass loading (flow x concentration) of such pollutant discharged to the receiving POTW does not exceed 100.0 lbs/day or

TABLE R - NetDMR Reporting Required Discharge Serial Number: 224-1 Monitoring Location: 1 Wastewater Description: Reverse osmosis reject wastewater generated at the Building 29 power plant Monitoring Location Description: Reverse osmosis drain

Limit

Maximum Daily Limit

Sample/Reporting Frequency 2

Sample Type or Measurement to be reported

Instantaneous limit or required range

Sample/ Reporting Frequency2

Sample Type or measurement to be reported

Copper, Total mg/l NA NA NR NA 2.0 NR Grab Flow, average daily1 gpd 24,700 Daily Daily Flow NA NR NA Flow, Maximum Daily1 gpd NA 72,000 Quarterly Daily Flow NA NR NA Flow, Day of sampling gpd NA 72,000 Quarterly Daily Flow NA NR NA Lead, Total mg/l NA NA NR NA 0.5 NR Grab Hydrocarbons, total petroleum3 mg/l NA NA NR NA 100.0 Quarterly Grab pH, Day of sampling S.U. NA NA NR NA 5.0 – 12.0 Quarterly Grab Solids, total suspended mg/l NA NA NR NA 600.03 Quarterly Grab Lead, Total mg/l NA NA NR NA 0.5 Quarterly Grab Table J Footnotes:

1 For this parameter, the Permittee shall maintain at the facility a record of the Total Daily Flow for each day of discharge and shall report either the Average Daily Flow and the Maximum Daily Flow for each sampling month or Flow Day of Sampling as applicable. Flow measurement shall be based on operational conditions, water use and equipment specifications if installation and operation of flow meters is not practical for these discharge flows.

2 The first entry in this column is the ‘Sample Frequency’. If this entry is not followed by a ‘Reporting Frequency’ and the ‘Sample Frequency’ is more frequent than monthly then the ‘Reporting Frequency’ is monthly. If the ‘Sample frequency’ is specified as monthly, or less frequent, then the ‘Reporting Frequency’ is the same as the ‘Sample Frequency’.

3 This pollutant concentration may be exceeded provided that the total mass loading (flow x concentration) of such pollutant discharged to the receiving POTW does not exceed 100.0 lbs/day or

TABLE S - NetDMR Reporting Not Required Discharge Serial Number: 225-1 Monitoring Location: 1 Wastewater Description: Water Treatment Wastewater from the water softener (resin polisher) regeneration syatem at the Building 29 steam condensate re-use system Monitoring Location Description: Low temperature softener discharge drain

Limit

Maximum Daily Limit

Sample/Reporting Frequency 2

Sample Type or Measurement to be reported

Instantaneous limit or required range

Sample/ Reporting Frequency2

Sample Type or measurement to be reported

Copper, Total mg/l NA NA NR NA 2.0 Quarterly Grab Flow, Maximum Daily1 gpd NA 4,000 Quarterly Daily Flow NA NR NA Flow, Day of sampling gpd NA 4,000 Quarterly Daily Flow NA NR NA Lead, Total mg/l NA NA NR NA 0.5 Quarterly Grab Hydrocarbons, total petroleum3 mg/l NA NA NR NA 100.0 Quarterly Grab pH, Day of sampling S.U. NA NA NR NA 5.0 – 12.0 Quarterly Grab Solids, total suspended mg/l NA NA NR NA 600.03 Quarterly Grab Zinc, Total mg/l NA NA NR NA 2.0 Quarterly Grab Table J Footnotes:

1 For this parameter, the Permittee shall maintain at the facility a record of the Total Daily Flow for each day of discharge and shall report either the Average Daily Flow and the Maximum Daily Flow for each sampling month or Flow Day of Sampling as applicable. Flow measurement shall be based on operational conditions, water use and equipment specifications if installation and operation of flow meters is not practical for these discharge flows.

2 The first entry in this column is the ‘Sample Frequency’. If this entry is not followed by a ‘Reporting Frequency’ and the ‘Sample Frequency’ is more frequent than monthly then the ‘Reporting Frequency’ is monthly. If the ‘Sample frequency’ is specified as monthly, or less frequent, then the ‘Reporting Frequency’ is the same as the ‘Sample Frequency’.

A representative sample collected from one (1) boiler, selected randomly, may be used to satisfy each quarterly sampling event so long as each boiler is sampled at least once every 3 years

3 This pollutant concentration may be exceeded provided that the total mass loading (flow x concentration) of such pollutant discharged to the receiving POTW does not exceed 100.0 lbs/day or

TABLE T - NetDMR Reporting Not Required Discharge Serial Number: 226-1 Monitoring Location: 1 Wastewater Description: Natural gas condensate generated from exhaust and heat exchangers from multiple buildings at SUBASENLON Monitoring Location Description: Condensate discharge pipes

Limit

Maximum Daily Limit

Sample/Reporting Frequency 2

Sample Type or Measurement to be reported

Instantaneous limit or required range

Sample/ Reporting Frequency2

Sample Type or measurement to be reported

Copper, Total mg/l NA NA NR NA 2.0 Quarterly Grab Flow, Maximum Daily1 gpd NA 11,000 Quarterly Daily Flow NA NR NA Flow, Day of sampling gpd NA 11,000 Quarterly Daily Flow NA NR NA Lead, Total mg/l NA NA NR NA 0.5 Quarterly Grab Hydrocarbons, total petroleum4 mg/l NA NA NR NA 100 Quarterly Grab pH, Day of sampling S.U. NA NA NR NA 5.0 – 12.0 Quarterly Grab Solids, total suspended mg/l NA NA NR NA 600.03 Quarterly Grab Zinc, Total mg/l NA NA NR NA 2.0 Quarterly Grab Table J Footnotes:

1 For this parameter, the Permittee shall maintain at the facility a record of the Total Daily Flow for each day of discharge and shall report either the Average Daily Flow and the Maximum Daily Flow for each sampling month or Flow Day of Sampling as applicable. Flow measurement shall be based on operational conditions, water use and equipment specifications if installation and operation of flow meters is not practical for these discharge flows..

2 The first entry in this column is the ‘Sample Frequency’. If this entry is not followed by a ‘Reporting Frequency’ and the ‘Sample Frequency’ is more frequent than monthly then the ‘Reporting Frequency’ is monthly. If the ‘Sample frequency’ is specified as monthly, or less frequent, then the ‘Reporting Frequency’ is the same as the ‘Sample Frequency’.

A representative sample collected from one (1) boiler, selected randomly, may be used to satisfy each quarterly sampling event so long as each boiler is sampled at least once every 3 years

3 This pollutant concentration may be exceeded provided that the total mass loading (flow x concentration) of such pollutant discharged to the receiving POTW does not exceed 100.0 lbs/day or

TABLE U - NetDMR Not Reporting Required Discharge Serial Number: 227-1 Monitoring Location: 1 Wastewater Description: Building 29 steam condensate (high temperature) steam recovery and reuse system activated carbon backwash discharge Monitoring Location Description: Activated Carbon system discharge drain

Limit

Maximum Daily Limit

Sample/Reporting Frequency 2

Sample Type or Measurement to be reported

Instantaneous limit or required range

Sample/ Reporting Frequency2

Sample Type or measurement to be reported

Copper, Total mg/l NA NA NR NA 2.0 Quarterly Grab Flow, Maximum Daily1 gpd NA 4,800 Quarterly Daily Flow NA NR NA Flow, Day of sampling gpd NA 4,800 Quarterly Daily Flow NA NR NA Lead, Total mg/l NA NA NR NA 0.5 Quarterly Grab Nickel, Total mg/l NA NA NR NA --- Quarterly Grab Hydrocarbons, total petroleum4 mg/l NA NA NR NA 100 Quarterly Grab pH, Day of sampling S.U. NA NA NR NA 5.0 – 12.0 Quarterly Grab Solids, total suspended mg/l NA NA NR NA 600.03 Quarterly Grab Zinc, Total mg/l NA NA NR NA 2.0 Quarterly Grab Table J Footnotes:

1 For this parameter, the Permittee shall maintain at the facility a record of the Total Daily Flow for each day of discharge and shall report either the Average Daily Flow and the Maximum Daily Flow for each sampling month or Flow Day of Sampling as applicable. Flow measurement shall be based on operational conditions, water use and equipment specifications if installation and operation of flow meters is not practical for these discharge flows..

2 The first entry in this column is the ‘Sample Frequency’. If this entry is not followed by a ‘Reporting Frequency’ and the ‘Sample Frequency’ is more frequent than monthly then the ‘Reporting Frequency’ is monthly. If the ‘Sample frequency’ is specified as monthly, or less frequent, then the ‘Reporting Frequency’ is the same as the ‘Sample Frequency’.

3 This pollutant concentration may be exceeded provided that the total mass loading (flow x concentration) of such pollutant discharged to the receiving POTW does not exceed 100.0 lbs/day or

TABLE V - NetDMR Reporting Not Required Discharge Serial Number: 228-1 Monitoring Location: 1 Wastewater Description: A maximum of 9,000 gpd (estimated) of ice machine condenser cooling, condensate and miscellaneous drippings from ice machines from multiple buildings at SUBASENLON both currently active and planned, Monitoring Location Description: Not Applicable Discharge is to: The Town of Groton Water Pollution Control Facility

TABLE W - NetDMR Reporting Not Required Discharge Serial Number: 229-1 Monitoring Location: 1 Wastewater Description: A maximum daily flow of 400 gpd (estimated) of health care related wastewaters from the Building 449 Health Clinic, Monitoring Location Description: Not Applicable Discharge is to: The Town of Groton Water Pollution Control Facility Remarks:

No monitoring required unless requested by the Town of Groton WPCF.

When applicable, endoscope sterilization/reprocessing wastewaters shall have glutaraldehyde neutralized in accordance with the specifications for the use of Glute Out® .

TABLE X - NetDMR Reporting Not Required Discharge Serial Number: 230-1 Monitoring Location: 1 Wastewater Description: A maximum of 1,100 gpd (estimated) of dental care wastewater from the Building 575 Dental Clinic Monitoring Location Description: Not Applicable Discharge is to: The Town of Groton Water Pollution Control Facility Remarks:

Amalgam separators shall be maintained at all times in accordance with manufacturer specifications.

TABLE Y - NetDMR Reporting Not Required Discharge…