ELECTRIC BOAT COMPANY
Quick Summary
- •Released 186 lbs of toxic chemicals to the environment in the most recent TRI reporting year.
- •Currently out of compliance in at least one environmental program (CAA, CWA, or RCRA).
- •Assessed $0 in total penalties since records began.
- •Reports releases of chemicals classified as known or probable carcinogens.
- Address
-
75 EASTERN POINT ROAD
GROTON, CT 06340
View on map ↗ - County
- NEW LONDON County
- Industry
- Manufacturing
- NAICS (North American Industry Classification)
- 336611
- Inspections
- 8 · last May 6, 2025
- Total Penalties
- $0 · last Jun 14, 2018
- Registry ID
- 110011370729
How This Compares
Ranked by most recent year's total TRI releases.
Compliance Status (Last 12 Quarters)
Number of calendar quarters, out of the last 12, in which this facility was in violation of its permit. Zero means no recorded violations in that program over the past three years.
Qtrs Non-Compliant
Qtrs Non-Compliant
Qtrs Non-Compliant
TRI Toxic Chemical Releases
Annual pounds of each toxic chemical released to air, water, and land, as reported to the EPA Toxic Release Inventory. Carcinogen (♦) and PFAS designations are per EPA and IARC classifications.
| Year | Total Releases (lbs) | vs Prior Year |
|---|---|---|
| 2015 | 144 | — |
| 2016 | 178 | +24% |
| 2017 | 186 | +4% |
| 2018 | 102 | -45% |
| 2019 | 69 | -33% |
| 2020 | 68 | -1% |
| 2021 | 106 | +55% |
| 2022 | 94 | -11% |
| 2023 | 63 | -33% |
| 2024 | 74 | +18% |
2024
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Copper compounds | 38 | 1 | 37 | — | 94,263 | |
| Manganese compounds | 15 | 15 | — | — | 6,756 | |
| Nickel | 10 | 9 | 0 | — | 64,569 | ♦ Carcinogen |
| Lead | 8 | 8 | 1 | — | 148,297 | ♦ Carcinogen |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 3 | 3 | — | — | 28,822 | |
| Diisocyanates | 0 | 0 | — | — | 6,417 |
2023
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Copper compounds | 31 | 1 | 30 | — | 83,727 | |
| Manganese compounds | 12 | 12 | — | — | 11,057 | |
| Nickel | 10 | 10 | 0 | — | 86,973 | ♦ Carcinogen |
| Lead | 6 | 4 | 2 | — | 88,615 | ♦ Carcinogen |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 4 | 4 | — | — | 41,973 | |
| Diisocyanates | 0 | 0 | — | — | 7,319 |
2022
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Copper compounds | 60 | 1 | 60 | — | 88,753 | |
| Lead | 10 | 4 | 6 | — | 82,306 | ♦ Carcinogen |
| Manganese compounds | 9 | 9 | — | — | 7,170 | |
| Nickel | 8 | 8 | 1 | — | 47,914 | ♦ Carcinogen |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 6 | 3 | 2 | — | 28,287 | |
| Diisocyanates | 1 | 1 | — | — | 13,243 |
2021
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Copper compounds | 71 | 2 | 69 | — | 78,635 | |
| Lead | 11 | 4 | 7 | — | 84,351 | ♦ Carcinogen |
| Nickel | 11 | 8 | 2 | — | 67,298 | ♦ Carcinogen |
| Manganese compounds | 9 | 9 | — | — | 11,684 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 4 | 3 | 1 | — | 38,180 | |
| Diisocyanates | 1 | 1 | — | — | 50,960 |
2020
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Copper compounds | 37 | 1 | 36 | — | 57,161 | |
| Manganese compounds | 12 | 12 | — | — | 17,722 | |
| Nickel | 8 | 7 | 2 | — | 42,944 | ♦ Carcinogen |
| Lead | 8 | 7 | 1 | — | 90,649 | ♦ Carcinogen |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 2 | 2 | 0 | — | 42,633 | |
| Diisocyanates | 0 | 0 | — | — | 34,684 |
2019
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Copper compounds | 58 | 1 | 57 | — | 40,347 | |
| Manganese compounds | 11 | 11 | — | — | 22,473 |
2018
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Copper compounds | 65 | 2 | 63 | — | 67,102 | |
| Manganese compounds | 13 | 13 | — | — | 24,244 | |
| Nickel | 11 | 10 | 1 | — | 54,147 | ♦ Carcinogen |
| Lead | 10 | 7 | 3 | — | 172,372 | ♦ Carcinogen |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 3 | 3 | 0 | — | 58,304 | |
| Diisocyanates | 0 | 0 | — | — | 6,243 |
2017
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Copper compounds | 76 | 2 | 75 | — | 78,489 | |
| Nickel | 58 | 11 | 46 | — | 68,741 | ♦ Carcinogen |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 17 | 5 | 12 | — | 64,091 | |
| Lead | 17 | 7 | 10 | — | 133,108 | ♦ Carcinogen |
| Manganese compounds | 13 | 13 | — | — | 23,186 | |
| Diisocyanates | 5 | 5 | — | — | 14,721 |
2016
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Copper compounds | 78 | 2 | 76 | — | 56,000 | |
| Nickel | 54 | 11 | 43 | — | 40,396 | ♦ Carcinogen |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 16 | 5 | 11 | — | 53,921 | |
| Lead | 16 | 7 | 9 | — | 98,046 | ♦ Carcinogen |
| Manganese compounds | 10 | 10 | — | — | 23,744 | |
| Diisocyanates | 5 | 5 | — | — | 12,476 |
2015
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Copper compounds | 59 | 1 | 57 | — | 60,479 | |
| Nickel | 44 | 8 | 36 | — | 19,340 | ♦ Carcinogen |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 18 | 5 | 13 | — | 38,684 | |
| Lead | 11 | 7 | 4 | — | 145,025 | ♦ Carcinogen |
| Manganese compounds | 7 | 7 | — | — | 23,412 | |
| Diisocyanates | 5 | 5 | — | — | 9,099 |
Waste Management & Recycling
How this facility manages toxic chemicals beyond direct releases — through recycling, energy recovery, and on-site or off-site treatment. Data from the most recent TRI reporting year. Quantities in pounds.
| Chemical | Released | Recycled | Energy Recovery | Treated |
|---|---|---|---|---|
| Nickel | — | 62,310 | — | — |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | — | 28,338 | — | — |
| Copper compounds | — | 94,231 | — | — |
| Lead | — | 147,506 | — | — |
| Manganese compounds | — | 6,716 | — | — |
Off-Site Transfer Destinations
Facilities to which toxic chemicals were transferred for disposal, recycling, energy recovery, or treatment during the most recent TRI reporting year. Quantities in pounds.
| Destination | Chemical | Disposal | Recycling | Energy Rec. | Treatment |
|---|---|---|---|---|---|
|
CLEAN HARBORS REIDSVILLE, LLC
REIDSVILLE, NC
|
Nickel | 0 | — | — | — |
|
UNIVAR SOLUTIONS USA INC
BINGHAMTON, NY
|
Nickel | 2,225 | — | — | — |
|
METAL MANAGEMENT NORTHEAST CT
NORTH HAVEN, CT
|
Nickel | — | 62,310 | — | — |
|
SPRING GROVE RESOURCE RECOVERY INC
CINCINNATI, OH
|
Nickel | 33 | — | — | — |
|
CLEAN HARBORS EL DORADO, LLC
EL DORADO, AR
|
Chromium compounds (except for chromite ore mined in the Transvaal Region) | 8 | — | — | — |
|
METAL MANAGEMENT NORTHEAST CT
NORTH HAVEN, CT
|
Chromium compounds (except for chromite ore mined in the Transvaal Region) | — | 28,338 | — | — |
|
SPRING GROVE RESOURCE RECOVERY INC
CINCINNATI, OH
|
Chromium compounds (except for chromite ore mined in the Transvaal Region) | 46 | — | — | — |
|
UNIVAR SOLUTIONS USA INC
BINGHAMTON, NY
|
Chromium compounds (except for chromite ore mined in the Transvaal Region) | 418 | — | — | — |
|
CLEAN HARBORS OF CONNECTICUT INC
BRISTOL, CT
|
Chromium compounds (except for chromite ore mined in the Transvaal Region) | 10 | — | — | — |
|
CLEAN HARBORS OF BRAINTREE INC
BRAINTREE, MA
|
Chromium compounds (except for chromite ore mined in the Transvaal Region) | 2 | — | — | — |
|
UNIVAR SOLUTIONS USA INC
BINGHAMTON, NY
|
Diisocyanates | 6,417 | — | — | — |
|
METAL MANAGEMENT NORTHEAST CT
NORTH HAVEN, CT
|
Manganese compounds | — | 6,716 | — | — |
|
SPRING GROVE RESOURCE RECOVERY INC
CINCINNATI, OH
|
Manganese compounds | 40 | — | — | — |
|
CLEAN HARBORS REIDSVILLE, LLC
REIDSVILLE, NC
|
Copper compounds | 0 | — | — | — |
|
METAL MANAGEMENT NORTHEAST CT
NORTH HAVEN, CT
|
Copper compounds | — | 94,231 | — | — |
|
SPRING GROVE RESOURCE RECOVERY INC
CINCINNATI, OH
|
Copper compounds | 28 | — | — | — |
|
CLEAN HARBORS EL DORADO, LLC
EL DORADO, AR
|
Lead | 8 | — | — | — |
|
CLEAN HARBORS ENVIRONMENTAL SERVICES INC
BRISTOL, CT
|
Lead | 3 | — | — | — |
|
CLEAN HARBORS OF BRAINTREE INC
BRAINTREE, MA
|
Lead | 127 | — | — | — |
|
METAL MANAGEMENT NORTHEAST CT
NORTH HAVEN, CT
|
Lead | — | 147,506 | — | — |
|
SPRING GROVE RESOURCE RECOVERY INC
CINCINNATI, OH
|
Lead | 255 | — | — | — |
|
UNIVAR SOLUTIONS USA INC
BINGHAMTON, NY
|
Lead | 397 | — | — | — |
|
CLEAN HARBORS REIDSVILLE, LLC
REIDSVILLE, NC
|
Lead | 0 | — | — | — |
Transfers to Publicly-Owned Treatment Works (POTWs)
Toxic chemicals transferred to municipal wastewater treatment plants during the most recent TRI reporting year. Quantities in pounds.
| Chemical | Transferred (lbs) | POTW |
|---|---|---|
| Copper compounds | 4 | GROTON WATER POLLUTION CONTROL FACILITY, GROTON |
| Manganese compounds | — | GROTON WATER POLLUTION CONTROL FACILITY, GROTON |
| Nickel | 1 | GROTON WATER POLLUTION CONTROL FACILITY, GROTON |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | — | GROTON WATER POLLUTION CONTROL FACILITY, GROTON |
| Lead | 1 | GROTON WATER POLLUTION CONTROL FACILITY, GROTON |
Compliance Violations
Individual permit violations recorded by the EPA across air, water, and hazardous waste programs. Open violations are unresolved as of the most recent ECHO data update.
| Program | Type | Violation Date | Return to Compliance | Status |
|---|---|---|---|---|
| caa | FRV | Nov 3, 2025 | — | Open |
| cwa | Management Practice Violations - Failure to Maintain Records | Jun 5, 2025 | — | Open |
| cwa | Permit Violations - Unapproved Operation | Jun 5, 2025 | — | Open |
| cwa | Permit Violations - Violation Specified in Comment | Jun 5, 2025 | — | Open |
| cwa | Permit Violations - Discharge Without a Valid Permit | Jun 5, 2025 | — | Open |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | May 6, 2025 | May 21, 2025 | Resolved |
| rcra | State Statutory or Regulatory requirements that are broader-in-scope than the federal RCRA requirements | May 6, 2025 | May 21, 2025 | Resolved |
| cwa | Permit Violations - Discharge Without a Valid Permit | Mar 21, 2023 | — | Open |
| cwa | Management Practice Violations - Improper Operation and Maintenance | Mar 21, 2023 | — | Open |
| caa | FRV | Sep 2, 2022 | — | Open |
| caa | FRV | May 5, 2022 | — | Open |
| caa | FRV | Mar 24, 2021 | — | Open |
| caa | FRV | Mar 29, 2018 | — | Open |
| rcra | Interim Status Standards for Owners and Operators of HW TSDs: Financial Requirements | Aug 10, 2007 | Mar 28, 2008 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Sep 5, 2000 | Oct 2, 2000 | Resolved |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | Sep 5, 2000 | Oct 2, 2000 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Mar 9, 1999 | Nov 4, 1999 | Resolved |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | Mar 9, 1999 | Nov 4, 1999 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: Use and Management of Containers | Sep 25, 1996 | Sep 5, 2000 | Resolved |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | Sep 25, 1996 | Nov 13, 1996 | Resolved |
| rcra | Interim Status Standards for Owners and Operators of HW TSDs: Use and Management of Containers | Sep 25, 1996 | Nov 13, 1996 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: Contingency Plan and Emergency Procedures | Sep 25, 1996 | Sep 5, 2000 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Dec 1, 1994 | Sep 5, 2000 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: Contingency Plan and Emergency Procedures | Dec 1, 1994 | Sep 25, 1996 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: Use and Management of Containers | Dec 1, 1994 | Sep 5, 2000 | Resolved |
| rcra | Interim Status Standards for Owners and Operators of HW TSDs: General | Dec 1, 1994 | Sep 25, 1996 | Resolved |
| rcra | Interim Status Standards for Owners and Operators of HW TSDs: General Facility Standards | Dec 1, 1994 | Sep 25, 1996 | Resolved |
| rcra | Interim Status Standards for Owners and Operators of HW TSDs: Manifest System, Recordkeeping and Reporting | Dec 1, 1994 | Nov 13, 1996 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: General | Sep 25, 1989 | Dec 1, 1994 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: General | Jul 8, 1987 | Dec 1, 1994 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: Financial Requirements | Jul 8, 1987 | Dec 1, 1994 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: General | Oct 28, 1986 | Dec 1, 1994 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: General | Jun 16, 1986 | Dec 1, 1994 | Resolved |
| rcra | Violation of a formal enforcement agreement or order. (3008(a) or 3013) | Dec 10, 1985 | Dec 1, 1994 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: Closure and Post-Closure | Jul 23, 1985 | Dec 1, 1994 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: General | Jul 23, 1985 | Dec 1, 1994 | Resolved |
| rcra | Violation of a formal enforcement agreement or order. (3008(a) or 3013) | Jul 23, 1985 | Dec 1, 1994 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: General | Jun 27, 1984 | Dec 1, 1994 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: Closure and Post-Closure | Jun 27, 1984 | Dec 1, 1994 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: Financial Requirements | Jun 27, 1984 | Dec 1, 1994 | Resolved |
Discharge Limit Exceedances
Instances where this facility's reported discharge monitoring results exceeded its permitted limits under the Clean Water Act. Exceedance percentage shows how far over the permit limit the discharge was.
| Pollutant | Violation | Reported | Limit | Exceedance | Period | Status |
|---|---|---|---|---|---|---|
| Flow, maximum during 24 hr period | DMR, Limited - Numeric Violation | 0.03 MGD | 0.02 | +43% | Sep 2025 | Open |
| Flow, maximum during 24 hr period | DMR, Limited - Numeric Violation | 34.58 MGD | 27.73 | +25% | Aug 2025 | Open |
| Flow, maximum during 24 hr period | DMR, Limited - Numeric Violation | 0.03 MGD | 0.02 | +43% | Aug 2025 | Open |
| Flow, maximum during 24 hr period | DMR, Limited - Numeric Violation | 0.03 MGD | 0.02 | +43% | Aug 2025 | Open |
| Oil & Grease | DMR, Limited - Numeric Violation | 14.70 mg/L | 10.00 | +47% | Jun 2025 | Open |
| Flow, maximum during 24 hr period | DMR, Limited - Numeric Violation | 35.69 MGD | 27.73 | +29% | Feb 2025 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.11 mg/L | 0.07 | +52% | Jan 2025 | Open |
| Flow, maximum during 24 hr period | DMR, Limited - Numeric Violation | 30.47 MGD | 27.73 | +10% | Dec 2024 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.05 mg/L | 0.05 | +8% | Aug 2023 | Open |
| Oxidants, free available | DMR, Limited - Numeric Violation | 0.30 mg/L | 0.20 | +50% | Sep 2022 | Open |
| Oxidants, free available | DMR, Limited - Numeric Violation | 0.23 mg/L | 0.20 | +15% | Aug 2022 | Open |
| NOAEL Static 48Hr Acute Pimephales promelas | DMR, Limited - Numeric Violation | 0.00 % | 90.00 | +100% | Jun 2022 | Open |
| Oxidants, free available | DMR, Limited - Numeric Violation | 0.72 mg/L | 0.20 | +260% | Jun 2022 | Open |
| NOAEL Static 48Hr Acute D. pulex | DMR, Limited - Numeric Violation | 0.00 % | 90.00 | +100% | Jun 2022 | Open |
| Flow, maximum during 24 hr period | DMR, Limited - Numeric Violation | 0.09 MGD | 0.06 | +42% | Oct 2021 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.04 mg/L | 0.03 | +24% | Jul 2021 | Open |
| Oil & Grease | DMR, Limited - Numeric Violation | 23.90 mg/L | 10.00 | +139% | Nov 2020 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.07 mg/L | 0.05 | +44% | Jul 2019 | Resolved |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.07 mg/L | 0.05 | +53% | Apr 2019 | Resolved |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.15 mg/L | 0.10 | +56% | Nov 2018 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.15 mg/L | 0.05 | +211% | Nov 2018 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.61 mg/L | 0.05 | +1,163% | Nov 2015 | Resolved |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.61 mg/L | 0.10 | +531% | Nov 2015 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.07 mg/L | 0.05 | +45% | Sep 2015 | Resolved |
| Flow, maximum during 24 hr period | DMR, Limited - Numeric Violation | 0.04 MGD | 0.04 | +8% | Apr 2015 | Open |
| Flow, maximum during 24 hr period | DMR, Limited - Numeric Violation | 0.17 MGD | 0.07 | +146% | Apr 2015 | Open |
| Flow, maximum during 24 hr period | DMR, Limited - Numeric Violation | 0.17 MGD | 0.07 | +138% | Mar 2015 | Open |
| Flow, maximum during 24 hr period | DMR, Limited - Numeric Violation | 0.05 MGD | 0.04 | +30% | Mar 2015 | Open |
Enforcement Actions
Formal enforcement cases brought by the EPA or state agencies, including administrative orders and civil penalties assessed. Penalty amounts reflect what was formally assessed, not necessarily what was collected.