UNISON ENGINE COMPONENTS
Quick Summary
- •Released 20 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
-
255 SHELDON RD
MANCHESTER, CT 06042
View on map ↗ - County
- HARTFORD County
- Industry
- Manufacturing
- NAICS (North American Industry Classification)
- 336412
- Inspections
- 6 · last Dec 4, 2025
- Total Penalties
- $0
- Registry ID
- 110006178894
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
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 | 20 | — |
| 2016 | 20 | 0% |
| 2017 | 20 | 0% |
| 2018 | 20 | 0% |
| 2020 | 20 | — |
| 2021 | 20 | 0% |
| 2022 | 20 | 0% |
| 2023 | 20 | 0% |
| 2024 | 20 | 0% |
2024
2023
2022
2021
2020
2018
2017
2016
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.
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 |
|---|---|---|---|---|---|
|
NORTHLAND ENVIRONMENTAL LLC
PROVIDENCE, RI
|
Chromium | 1 | — | — | — |
|
CENTRAL MACHINERY & METALS
MISSISSAUGA
|
Chromium | — | 2,798 | — | — |
|
CENTRAL MACHINERY & METALS
MISSISSAUGA
|
Nickel | — | 3,747 | — | — |
|
NORTHLAND ENVIRONMENTAL LLC
PROVIDENCE, RI
|
Nickel | 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.
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 | Management Practice Violations - Improper Operation and Maintenance | Nov 3, 2023 | — | Open |
| rcra | State Statutory or Regulatory requirements that are broader-in-scope than the federal RCRA requirements | Dec 14, 2016 | Jan 23, 2017 | Resolved |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | Mar 18, 2002 | May 1, 2002 | 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 |
|---|---|---|---|---|---|---|
| Titanium, total [as Ti] | DMR, Limited - Numeric Violation | 4.25 mg/L | 4.00 | +6% | Dec 2021 | Open |
| Titanium, total [as Ti] | DMR, Limited - Numeric Violation | 4.25 mg/L | 2.00 | +113% | Dec 2021 | Open |
| Zinc, total [as Zn] | DMR, Limited - Numeric Violation | 1.09 mg/L | 1.00 | +9% | Feb 2021 | Open |
| Titanium, total [as Ti] | DMR, Limited - Numeric Violation | 2.20 mg/L | 2.00 | +10% | Dec 2020 | Open |
| Zinc, total [as Zn] | DMR, Limited - Numeric Violation | 1.27 mg/L | 1.00 | +27% | Nov 2020 | Open |
| Titanium, total [as Ti] | DMR, Limited - Numeric Violation | 15.70 mg/L | 4.00 | +293% | Mar 2020 | Open |
| Titanium, total [as Ti] | DMR, Limited - Numeric Violation | 8.16 mg/L | 2.00 | +308% | Mar 2020 | Open |
| Titanium, total [as Ti] | DMR, Limited - Numeric Violation | 9.86 mg/L | 4.00 | +147% | Aug 2017 | Open |
| Titanium, total [as Ti] | DMR, Limited - Numeric Violation | 9.86 mg/L | 2.00 | +393% | Aug 2017 | Open |
| Zinc, total [as Zn] | DMR, Limited - Numeric Violation | 1.98 mg/L | 1.00 | +98% | Apr 2017 | Open |
| Zinc, total [as Zn] | DMR, Limited - Numeric Violation | 1.15 mg/L | 1.00 | +15% | Aug 2016 | Open |
| Oil petroleum, total recoverable | DMR, Limited - Numeric Violation | 240.00 mg/L | 100.00 | +140% | Aug 2016 | Open |
| Zinc, total [as Zn] | DMR, Limited - Numeric Violation | 2.10 mg/L | 2.00 | +5% | Mar 2016 | Open |
| Zinc, total [as Zn] | DMR, Limited - Numeric Violation | 1.36 mg/L | 1.00 | +36% | Mar 2016 | Resolved |
| Zinc, total [as Zn] | DMR, Limited - Numeric Violation | 3.30 mg/L | 2.00 | +65% | Feb 2016 | Open |
| Zinc, total [as Zn] | DMR, Limited - Numeric Violation | 1.95 mg/L | 1.00 | +95% | Feb 2016 | Resolved |
| Oil petroleum, total recoverable | DMR, Limited - Numeric Violation | 720.00 mg/L | 100.00 | +620% | Dec 2015 | Open |
| Titanium, total [as Ti] | DMR, Limited - Numeric Violation | 6.50 mg/L | 2.00 | +225% | Dec 2015 | Open |
| Titanium, total [as Ti] | DMR, Limited - Numeric Violation | 6.50 mg/L | 4.00 | +63% | Dec 2015 | Open |
| Oil petroleum, total recoverable | DMR, Limited - Numeric Violation | 130.00 mg/L | 100.00 | +30% | Jun 2015 | Open |
| Zinc, total [as Zn] | DMR, Limited - Numeric Violation | 1.10 mg/L | 1.00 | +10% | Apr 2015 | Open |
| Zinc, total [as Zn] | DMR, Limited - Numeric Violation | 1.22 mg/L | 1.00 | +22% | Mar 2015 | Resolved |
| Oil petroleum, total recoverable | DMR, Limited - Numeric Violation | 320.00 mg/L | 100.00 | +220% | 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.