Non-Compliance
TRI Reporter
Clean Air Act
Clean Water Act
RCRA
UNIMETAL SURFACE FINISHING, LLC
Quick Summary
- •Released 82,945 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 $90,000 in total penalties since records began.
- •Reports releases of chemicals classified as known or probable carcinogens.
- Address
-
135 SOUTH MAIN ST.
THOMASTON, CT 06787
View on map ↗ - County
- LITCHFIELD County
- Industry
- Manufacturing
- NAICS (North American Industry Classification)
- 332813
- Inspections
- 6 · last Sep 30, 2025
- Total Penalties
- $90,000 · last Feb 7, 2025
- Registry ID
- 110000317434
How This Compares
#1
of 204 TRI reporters in CT
#1,234
of 16,877 TRI reporters in Manufacturing
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.
0
Air (CAA)
Qtrs Non-Compliant
Qtrs Non-Compliant
8
Water (CWA)
Qtrs Non-Compliant
Qtrs Non-Compliant
11
Hazardous Waste (RCRA)
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.
Emissions Trend (2015–2024)
-89% overall
| Year | Total Releases (lbs) | vs Prior Year |
|---|---|---|
| 2015 | 67,886 | — |
| 2016 | 61,893 | -9% |
| 2017 | 82,945 | +34% |
| 2018 | 92,944 | +12% |
| 2019 | 211 | -100% |
| 2020 | 21,744 | +10205% |
| 2021 | 1,141 | -95% |
| 2022 | 13,694 | +1100% |
| 2023 | 12,397 | -9% |
| 2024 | 7,596 | -39% |
2024
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | — | — | — | — | 9,513 | |
| Nitric acid | — | — | — | — | — | |
| Tetrachloroethylene | 7,346 | 7,346 | — | — | 13,367 | ♦ Carcinogen |
| Zinc compounds | 250 | — | 250 | — | 57,181 |
2023
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Nitric acid | — | — | — | — | — | |
| Zinc compounds | — | — | — | — | 76,645 | |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | — | — | — | — | 4,878 | |
| Tetrachloroethylene | 12,387 | 12,387 | — | — | 35,000 | ♦ Carcinogen |
| Nickel compounds | 10 | — | 10 | — | 14,950 | ♦ Carcinogen |
2022
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Nitric acid | — | — | — | — | — | |
| Zinc compounds | — | — | — | — | 76,653 | |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | — | — | — | — | 4,221 | |
| Tetrachloroethylene | 13,687 | 13,687 | — | — | 21,865 | ♦ Carcinogen |
| Nickel compounds | 7 | — | 7 | — | 14,992 | ♦ Carcinogen |
2021
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Nickel compounds | — | — | — | — | 39,852 | ♦ Carcinogen |
| Nitric acid | — | — | — | — | — | |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | — | — | — | — | 1,794 | |
| Tetrachloroethylene | 1,140 | 1,140 | — | — | 22,534 | ♦ Carcinogen |
| Zinc compounds | 1 | — | 1 | — | 142,239 |
2020
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Nitric acid | — | — | — | — | — | |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 20,092 | 16,198 | 3,894 | — | 2,044 | |
| Tetrachloroethylene | 1,500 | 1,500 | — | — | 28,200 | ♦ Carcinogen |
| Zinc compounds | 115 | — | 115 | — | 95,406 | |
| Nickel compounds | 37 | — | 37 | — | 10,609 | ♦ Carcinogen |
2019
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Nickel compounds | 201 | — | 201 | — | 1,000 | ♦ Carcinogen |
| Tetrachloroethylene | 10 | 10 | — | — | 3,549 | ♦ Carcinogen |
2018
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Nitric acid | — | — | — | — | — | |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 92,019 | 87,563 | 4,456 | — | 3,314 | |
| Zinc compounds | 915 | — | 915 | — | 109,347 | |
| Tetrachloroethylene | 10 | 10 | — | — | 11,065 | ♦ Carcinogen |
2017
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Nitric acid | — | — | — | — | — | |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 81,963 | 75,813 | 6,150 | — | 2,963 | |
| Zinc compounds | 982 | — | 982 | — | 103,104 |
2016
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Nitric acid | — | — | — | — | — | |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 61,643 | 54,117 | 7,526 | — | 2,114 | |
| Zinc compounds | 250 | — | 250 | — | 95,925 |
2015
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Nitric acid | — | — | — | — | — | |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 67,636 | 60,330 | 7,306 | — | 2,134 | |
| Zinc compounds | 250 | — | 250 | — | 104,400 |
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 |
|---|---|---|---|---|
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | — | — | — | 9,513 |
| Tetrachloroethylene | — | — | 13,367 | — |
| Nitric acid | — | — | — | 40,486 |
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 |
|---|---|---|---|---|---|
|
STABLEX CANADA INC
BLAINVILLE
|
Zinc compounds | 57,112 | — | — | — |
|
STABLEX CANADA INC
BLAINVILLE
|
Nitrate compounds (water dissociable; reportable only when in aqueous solution) | — | — | — | 11 |
|
REPUBLIC ENVIRONMENTAL SYSTEMS (PA) LLC
HATFIELD, PA
|
Tetrachloroethylene | — | — | 13,367 | — |
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 |
|---|---|---|
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 9,502 | THOMASTON WPCF, THOMASTON |
| Zinc compounds | 69 | THOMASTON WPCF, THOMASTON |
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 |
|---|---|---|---|---|
| cwa | Effluent Violations - Numeric effluent violation | Sep 30, 2025 | — | Open |
| cwa | Permit Violations - Violation Specified in Comment | Apr 29, 2024 | — | Open |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Apr 29, 2024 | — | Open |
| rcra | Standards for the Management of Used Oil: Definitions | Aug 8, 2023 | — | Open |
| rcra | Standards for Universal Waste Management: Standards for Small Quantity Handlers | Aug 8, 2023 | — | Open |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | Aug 8, 2023 | — | Open |
| rcra | Standards Applicable to Generators of HW: General | Aug 8, 2023 | — | Open |
| rcra | State Statutory or Regulatory requirements that are broader-in-scope than the federal RCRA requirements | Aug 8, 2023 | — | Open |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Jan 24, 2017 | — | Open |
| cwa | Reporting Violations - Failure to Notify | Jun 16, 2015 | — | Open |
| rcra | Interim Status Standards for Owners and Operators of HW TSDs: Contingency Plan and Emergency Procedures | Dec 3, 2014 | Dec 31, 2014 | Resolved |
| rcra | ID and Listing of HW: General | Dec 3, 2014 | Dec 31, 2014 | Resolved |
| rcra | Standards for Universal Waste Management: Standards for Small Quantity Handlers | Dec 3, 2014 | Dec 31, 2014 | Resolved |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | Dec 3, 2014 | Dec 31, 2014 | Resolved |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Jul 29, 2014 | — | Open |
| rcra | State Statutory or Regulatory requirements that are broader-in-scope than the federal RCRA requirements | Jul 27, 2004 | Jan 31, 2005 | Resolved |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | Jul 27, 2004 | Jan 31, 2005 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | May 15, 2000 | Nov 27, 2000 | Resolved |
| rcra | Standards Applicable to Transporters of HW: General | May 15, 2000 | Nov 27, 2000 | Resolved |
| rcra | Standards Applicable to Recordkeeping and Reporting Applicable to Small and Large Quantity Generators | Nov 10, 1999 | Feb 1, 2001 | Resolved |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | Nov 10, 1999 | Feb 1, 2001 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Nov 10, 1999 | Feb 1, 2001 | Resolved |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | Feb 4, 1994 | May 11, 1999 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Dec 23, 1986 | Feb 4, 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 |
|---|---|---|---|---|---|---|
| Solids, total suspended | DMR, Limited - Numeric Violation | 122.00 mg/L | 100.00 | +22% | Jan 2026 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 128.00 mg/L | 100.00 | +28% | Nov 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 236.00 mg/L | 100.00 | +136% | Oct 2025 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 2.30 mg/L | 2.00 | +15% | Sep 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 124.00 mg/L | 100.00 | +24% | Sep 2025 | Open |
| Nickel, total [as Ni] | DMR, Limited - Numeric Violation | 2.70 mg/L | 2.00 | +35% | Aug 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 132.00 mg/L | 100.00 | +32% | Aug 2025 | Open |
| Nickel, total [as Ni] | DMR, Limited - Numeric Violation | 1.70 mg/L | 1.00 | +70% | Aug 2025 | Resolved |
| Oil petroleum, total recoverable | DMR, Limited - Numeric Violation | 140.10 mg/L | 100.00 | +40% | Aug 2025 | Open |
| Oil petroleum, total recoverable | DMR, Limited - Numeric Violation | 133.20 mg/L | 100.00 | +33% | Jul 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 148.00 mg/L | 100.00 | +48% | Jul 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 131.00 mg/L | 100.00 | +31% | Jun 2025 | Open |
| Nickel, total [as Ni] | DMR, Limited - Numeric Violation | 1.60 mg/L | 1.00 | +60% | May 2025 | Resolved |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 1.10 mg/L | 1.00 | +10% | May 2025 | Open |
| Nickel, total [as Ni] | DMR, Limited - Numeric Violation | 2.30 mg/L | 2.00 | +15% | May 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 210.00 mg/L | 100.00 | +110% | May 2025 | Open |
| Oil petroleum, total recoverable | DMR, Limited - Numeric Violation | 115.60 mg/L | 100.00 | +16% | May 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 181.00 mg/L | 100.00 | +81% | Apr 2025 | Open |
| Oil petroleum, total recoverable | DMR, Limited - Numeric Violation | 207.20 mg/L | 100.00 | +107% | Apr 2025 | Open |
| Nickel, total [as Ni] | DMR, Limited - Numeric Violation | 3.30 mg/L | 2.00 | +65% | Mar 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 258.00 mg/L | 100.00 | +158% | Mar 2025 | Open |
| Oil petroleum, total recoverable | DMR, Limited - Numeric Violation | 176.40 mg/L | 100.00 | +76% | Mar 2025 | Open |
| Nickel, total [as Ni] | DMR, Limited - Numeric Violation | 1.10 mg/L | 1.00 | +10% | Mar 2025 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 220.00 mg/L | 100.00 | +120% | Feb 2025 | Open |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 35.68 kg/d | 33.05 | +8% | Feb 2025 | Open |
| Nickel, total [as Ni] | DMR, Limited - Numeric Violation | 2.50 mg/L | 2.00 | +25% | Feb 2025 | Open |
| Nickel, total [as Ni] | DMR, Limited - Numeric Violation | 1.60 mg/L | 1.00 | +60% | Jan 2025 | Resolved |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 1.40 mg/L | 1.00 | +40% | Jan 2025 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 267.00 mg/L | 100.00 | +167% | Jan 2025 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 3.10 mg/L | 2.00 | +55% | Jan 2025 | Open |
| Oil petroleum, total recoverable | DMR, Limited - Numeric Violation | 202.00 mg/L | 100.00 | +102% | Jan 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 209.00 mg/L | 100.00 | +109% | Dec 2024 | Open |
| Nickel, total [as Ni] | DMR, Limited - Numeric Violation | 1.10 mg/L | 1.00 | +10% | Dec 2024 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 280.00 mg/L | 100.00 | +180% | Dec 2024 | Open |
| Nickel, total [as Ni] | DMR, Limited - Numeric Violation | 1.20 mg/L | 1.00 | +20% | Nov 2024 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 542.00 mg/L | 100.00 | +442% | Nov 2024 | Open |
| Oil petroleum, total recoverable | DMR, Limited - Numeric Violation | 276.40 mg/L | 100.00 | +176% | Nov 2024 | Open |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 50.71 kg/d | 33.05 | +53% | Oct 2024 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 1.60 mg/L | 1.00 | +60% | Oct 2024 | Resolved |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 4.30 mg/L | 2.00 | +115% | Oct 2024 | Open |
| Oil petroleum, total recoverable | DMR, Limited - Numeric Violation | 197.20 mg/L | 100.00 | +97% | Oct 2024 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 295.00 mg/L | 100.00 | +195% | Oct 2024 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 1.10 mg/L | 1.00 | +10% | Sep 2024 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 151.00 mg/L | 100.00 | +51% | Sep 2024 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 2.80 mg/L | 2.00 | +40% | Aug 2024 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 248.00 mg/L | 100.00 | +148% | Aug 2024 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 1.90 mg/L | 1.00 | +90% | Aug 2024 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 152.00 mg/L | 100.00 | +52% | Jun 2024 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 105.00 mg/L | 100.00 | +5% | Aug 2023 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 107.00 mg/L | 100.00 | +7% | Jan 2023 | 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.
State Administrative Order of Consent
Clean Water Act
· Case CT-COWRIN15002 · Jul 15, 2020
$64,000
State Administrative Order of Consent
Clean Water Act
· Case CT-WC5504 · Sep 24, 2009
FINAL 3008(A) COMPLIANCE ORDER
RCRA (Hazardous Waste)
· Case RCRA-CTD981213101-001 · Sep 17, 2004
Administrative - Formal
· Case 01-2001-0011 · Apr 3, 2001
WRITTEN INFORMAL
RCRA (Hazardous Waste)
· Case RCRA-CTR000500702-001 · Aug 2, 2000
WRITTEN INFORMAL
RCRA (Hazardous Waste)
· Case RCRA-CTD981213101-000 · Feb 1, 2000
Civil Judicial Action
Clean Water Act
· Case CT-N00000506 · May 15, 1996
WRITTEN INFORMAL
RCRA (Hazardous Waste)
· Case RCRA-CTD981213101-003 · Feb 19, 1987
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