Non-Compliance TRI Reporter Clean Air Act Clean Water Act RCRA

UNISON ENGINE COMPONENTS-MANCHESTER

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: 967 PARKER ST
MANCHESTER, CT 06042
View on map ↗
County: HARTFORD County
Industry: Manufacturing
NAICS (North American Industry Classification): 334511
Inspections: 6 · last Dec 4, 2025
Total Penalties: $0
Registry ID: 110033185880

How This Compares

#132 of 204 TRI reporters in CT

#11,414 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.

Air (CAA)
Qtrs Non-Compliant

Water (CWA)
Qtrs Non-Compliant

Hazardous Waste (RCRA)
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) 0% overall

Year	Total Releases (lbs)	vs Prior Year
2015	20	—
2016	20	0%
2017	20	0%
2018	20	0%
2019	10	-50%
2020	20	+100%
2021	20	0%
2022	20	0%
2023	20	0%
2024	20	0%

2024

Chemical	Total (lbs)	Air	Water	Land	Off-Site
Chromium	10	10	—	—	14,340
Nickel	10	10	—	—	19,842	♦ Carcinogen

2023

Chemical	Total (lbs)	Air	Water	Land	Off-Site
Chromium	10	10	—	—	20,800
Nickel	10	10	—	—	16,670	♦ Carcinogen

2022

Chemical	Total (lbs)	Air	Water	Land	Off-Site
Chromium	10	10	—	—	1,766
Nickel	10	10	—	—	3,876	♦ Carcinogen

2021

Chemical	Total (lbs)	Air	Water	Land	Off-Site
Nickel	10	10	—	—	9,880	♦ Carcinogen
Chromium	10	10	—	—	3,679

2020

Chemical	Total (lbs)	Air	Water	Land	Off-Site
Chromium	10	10	—	—	9,842
Nickel	10	10	—	—	25,231	♦ Carcinogen

2019

Chemical	Total (lbs)	Air	Water	Land	Off-Site
Chromium	10	10	—	—	8,278

2018

Chemical	Total (lbs)	Air	Water	Land	Off-Site
Nickel	10	10	—	—	11,988	♦ Carcinogen
Chromium	10	10	—	—	4,503

2017

Chemical	Total (lbs)	Air	Water	Land	Off-Site
Nickel	10	10	—	—	10,969	♦ Carcinogen
Chromium	10	10	—	—	4,180

2016

Chemical	Total (lbs)	Air	Water	Land	Off-Site
Nickel	10	10	—	—	12,661	♦ Carcinogen
Chromium	10	10	—	—	4,867

2015

Chemical	Total (lbs)	Air	Water	Land	Off-Site
Nickel	10	10	—	—	12,256	♦ Carcinogen
Chromium	10	10	—	—	4,937

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	—	19,841	—	—
Chromium	—	14,339	—	—

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
CENTRAL MACHINERY & METALS MISSISSAUGA	Nickel	—	19,841	—	—
NORTHLAND ENVIRONMENTAL LLC PROVIDENCE, RI	Nickel	0	—	—	—
NORTHLAND ENVIRONMENTAL LLC PROVIDENCE, RI	Chromium	0	—	—	—
CENTRAL MACHINERY & METALS MISSISSAUGA	Chromium	—	14,339	—	—

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
Chromium	—	HOCKANUM RIVER WATER POLLUTION CONTROL FACILITY, MANCHESTER
Nickel	0	HOCKANUM RIVER WATER POLLUTION CONTROL FACILITY, MANCHESTER

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
rcra	Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators	Jan 28, 2025	Jun 9, 2025	Resolved
rcra	Standards Applicable to Generators of HW: General	Jan 28, 2025	Jun 9, 2025	Resolved
rcra	Standards for Universal Waste Management: Standards for Small Quantity Handlers	Jan 28, 2025	Jan 28, 2025	Resolved
cwa	Effluent Violations - Numeric effluent violation	Nov 14, 2023	—	Open
rcra	Standards Applicable to Generators of HW: General	Dec 22, 2005	Mar 14, 2006	Resolved
rcra	Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators	Dec 22, 2005	Mar 14, 2006	Resolved
rcra	Standards Applicable to Generators of HW: General	Dec 12, 1985	Apr 27, 1987	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	0.01 MGD	0.01	+48%	May 2024	Open
Flow, maximum during 24 hr period	DMR, Limited - Numeric Violation	0.01 MGD	0.01	+18%	Mar 2023	Open
Flow, maximum during 24 hr period	DMR, Limited - Numeric Violation	0.01 MGD	0.01	+80%	Sep 2022	Open
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	1.37 mg/L	1.00	+37%	Feb 2022	Open
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	1.34 mg/L	1.00	+34%	Jul 2021	Resolved
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	1.58 mg/L	1.00	+58%	May 2021	Resolved
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	2.73 mg/L	2.00	+37%	Apr 2021	Open
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	2.73 mg/L	1.00	+173%	Apr 2021	Resolved
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	1.33 mg/L	1.00	+33%	Mar 2021	Resolved
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	1.36 mg/L	1.00	+36%	Feb 2021	Resolved
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	1.31 mg/L	1.00	+31%	Dec 2020	Resolved
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	1.56 mg/L	1.00	+56%	Nov 2020	Resolved
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	1.83 mg/L	1.00	+83%	Sep 2020	Resolved
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	1.10 mg/L	1.00	+10%	Jul 2020	Resolved
Flow, maximum during 24 hr period	DMR, Limited - Numeric Violation	0.05 MGD	0.02	+107%	May 2020	Open
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	2.29 mg/L	1.00	+129%	May 2020	Resolved
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	2.29 mg/L	2.00	+15%	May 2020	Open
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	1.57 mg/L	1.00	+57%	Mar 2020	Resolved
Oil & Grease	DMR, Limited - Numeric Violation	187.00 mg/L	100.00	+87%	Dec 2019	Resolved
Oil & Grease	DMR, Limited - Numeric Violation	160.00 mg/L	100.00	+60%	Nov 2019	Resolved
Oil & Grease	DMR, Limited - Numeric Violation	105.00 mg/L	100.00	+5%	Oct 2019	Resolved
Titanium, total [as Ti]	DMR, Limited - Numeric Violation	5.59 mg/L	4.00	+40%	Oct 2019	Open
Oil & Grease	DMR, Limited - Numeric Violation	107.00 mg/L	100.00	+7%	Sep 2019	Resolved
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	2.30 mg/L	1.00	+130%	Jun 2019	Resolved
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	3.19 mg/L	2.00	+60%	Jun 2019	Open
Oil & Grease	DMR, Limited - Numeric Violation	153.00 mg/L	100.00	+53%	Jun 2019	Open
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	2.60 mg/L	2.00	+30%	May 2019	Open
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	2.60 mg/L	1.00	+160%	May 2019	Resolved
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	1.44 mg/L	1.00	+44%	Jan 2019	Open
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	6.00 mg/L	2.00	+200%	Jan 2019	Open
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	1.29 mg/L	1.00	+29%	Dec 2018	Open
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	1.99 mg/L	1.00	+99%	Apr 2018	Resolved
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	3.00 mg/L	2.00	+50%	Mar 2018	Open
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	3.00 mg/L	1.00	+200%	Mar 2018	Resolved
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	1.14 mg/L	1.00	+14%	Feb 2018	Resolved
Oil & Grease	DMR, Limited - Numeric Violation	126.00 mg/L	100.00	+26%	Feb 2018	Open
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	1.22 mg/L	1.00	+22%	Mar 2017	Open
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	1.10 mg/L	1.00	+10%	Jan 2017	Open
Oil & Grease	DMR, Limited - Numeric Violation	140.00 mg/L	100.00	+40%	Jul 2016	Open
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	1.20 mg/L	1.00	+20%	May 2016	Resolved
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	1.50 mg/L	1.00	+50%	Apr 2016	Resolved
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	3.10 mg/L	1.00	+210%	Jan 2016	Resolved
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	3.40 mg/L	2.00	+70%	Jan 2016	Open
Oil & Grease	DMR, Limited - Numeric Violation	380.00 mg/L	100.00	+280%	Dec 2015	Open
Organics, total toxic [TTO]	DMR, Limited - Numeric Violation	6.98 mg/L	2.13	+228%	Dec 2015	Open
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	1.43 mg/L	1.00	+43%	Nov 2015	Resolved
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	1.65 mg/L	1.00	+65%	Oct 2015	Resolved
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	2.60 mg/L	2.00	+30%	Oct 2015	Open
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	1.21 mg/L	1.00	+21%	Aug 2015	Resolved
Zinc, total [as Zn]	DMR, Limited - Numeric Violation	1.10 mg/L	1.00	+10%	Jul 2015	Resolved

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.

Administrative - Formal

· Case HQ-2010-8007 · Apr 6, 2011

WRITTEN INFORMAL

RCRA (Hazardous Waste) · Case RCRA-CTD001157189-001 · Feb 23, 2006

WRITTEN INFORMAL

RCRA (Hazardous Waste) · Case RCRA-CTD001157189-003 · Feb 20, 1986

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