Non-Compliance
TRI Reporter
Clean Air Act
Clean Water Act
RCRA
GSP MERRIMACK LLC
Quick Summary
- •Released 47,734 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 $202,208 in total penalties since records began.
- •Reports releases of chemicals classified as known or probable carcinogens.
- Address
-
431 RIVER RD
BOW, NH 03304
View on map ↗ - County
- MERRIMACK County
- Industry
- Utilities
- NAICS (North American Industry Classification)
- 221112
- Inspections
- 5 · last Sep 30, 2025
- Total Penalties
- $202,208 · last Jul 10, 2025
- Registry ID
- 110071198058
How This Compares
#1
of 90 TRI reporters in NH
#317
of 584 TRI reporters in Utilities
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.
10
Air (CAA)
Qtrs Non-Compliant
Qtrs Non-Compliant
8
Water (CWA)
Qtrs Non-Compliant
Qtrs Non-Compliant
0
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)
-78% overall
| Year | Total Releases (lbs) | vs Prior Year |
|---|---|---|
| 2015 | 153,518 | — |
| 2016 | 70,850 | -54% |
| 2017 | 47,734 | -33% |
| 2018 | 88,948 | +86% |
| 2019 | 508 | -99% |
| 2020 | 17,696 | +3384% |
| 2021 | 37,987 | +115% |
| 2022 | 61,398 | +62% |
| 2023 | 30,473 | -50% |
| 2024 | 33,703 | +11% |
2024
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 27,803 | 27,803 | — | — | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 5,563 | 5,563 | — | — | — | |
| Ammonia | 327 | 64 | 251 | 12 | — | |
| Lead compounds | 7 | 2 | 3 | 2 | 131 | |
| Polycyclic aromatic compounds | 2 | 2 | — | 0 | 0 | ♦ Carcinogen |
| Mercury compounds | 1 | 1 | 0 | 0 | 92 | |
| Benzo[g,h,i]perylene | 0 | 0 | — | 0 | 0 |
2023
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 27,566 | 27,566 | — | — | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 2,331 | 2,331 | — | — | — | |
| Ammonia | 528 | 77 | 251 | 200 | — | |
| Lead compounds | 42 | 2 | 3 | 37 | 92 | |
| Polycyclic aromatic compounds | 4 | 4 | — | 0 | 0 | ♦ Carcinogen |
| Mercury compounds | 2 | 1 | 0 | 0 | 24 | |
| Benzo[g,h,i]perylene | 0 | 0 | — | 0 | 0 |
2022
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 56,028 | 56,028 | — | — | — | |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 3,031 | 150 | 45 | 2,836 | 4,372 | |
| Ammonia | 1,189 | 150 | 290 | 749 | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 985 | 985 | — | — | — | |
| Lead compounds | 148 | 5 | 4 | 139 | 232 | |
| Polycyclic aromatic compounds | 11 | 11 | — | 0 | 0 | ♦ Carcinogen |
| Mercury compounds | 3 | 2 | 0 | 1 | 92 | |
| Naphthalene | 2 | 2 | — | — | 20 | ♦ Carcinogen |
| Benzo[g,h,i]perylene | 0 | 0 | — | 0 | 0 |
2021
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 36,546 | 36,546 | — | — | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 925 | 925 | — | — | — | |
| Ammonia | 483 | 126 | 305 | 52 | — | |
| Lead compounds | 24 | 3 | 4 | 17 | 228 | |
| Polycyclic aromatic compounds | 6 | 6 | — | 0 | 0 | ♦ Carcinogen |
| Mercury compounds | 3 | 2 | 0 | 0 | 74 | |
| Benzo[g,h,i]perylene | 0 | 0 | — | 0 | 0 |
2020
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 16,362 | 16,362 | — | — | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 918 | 918 | — | — | — | |
| Ammonia | 369 | 61 | 190 | 118 | — | |
| Lead compounds | 43 | 2 | 2 | 39 | 93 | |
| Polycyclic aromatic compounds | 3 | 3 | — | 0 | 0 | ♦ Carcinogen |
| Mercury compounds | 1 | 1 | 0 | 0 | 27 | |
| Benzo[g,h,i]perylene | 0 | 0 | — | 0 | 0 |
2019
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Ammonia | 446 | 138 | 305 | 3 | — | |
| Lead compounds | 59 | 4 | 4 | 51 | 341 | |
| Mercury compounds | 3 | 3 | 0 | 0 | 109 |
2018
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 84,557 | 84,557 | — | — | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 2,766 | 2,766 | — | — | — | |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 706 | 121 | 72 | 513 | 23,183 | |
| Ammonia | 683 | 219 | 462 | 2 | 38 | |
| Hydrogen fluoride | 154 | 152 | 2 | — | 1 | |
| Lead compounds | 76 | 5 | 6 | 65 | 1,045 | |
| Mercury compounds | 3 | 3 | 0 | 0 | 152 | |
| Polycyclic aromatic compounds | 3 | 3 | — | — | 0 | ♦ Carcinogen |
| Benzo[g,h,i]perylene | 0 | 0 | — | 0 | 0 |
2017
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Benzo[g,h,i]perylene | — | — | — | — | — | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 46,400 | 46,400 | — | — | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 920 | 920 | — | — | — | |
| Ammonia | 364 | 94 | 268 | 2 | — | |
| Lead compounds | 46 | 2 | 3 | 40 | 219 | |
| Polycyclic aromatic compounds | 3 | 3 | — | — | 0 | ♦ Carcinogen |
| Mercury compounds | 1 | 1 | — | 0 | 80 |
2016
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Benzo[g,h,i]perylene | — | — | — | — | — | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 68,985 | 68,985 | — | — | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 1,314 | 1,314 | — | — | — | |
| Ammonia | 390 | 157 | 225 | 8 | — | |
| Lead compounds | 156 | 3 | 3 | 150 | 386 | |
| Polycyclic aromatic compounds | 3 | 3 | — | — | 0 | ♦ Carcinogen |
| Mercury compounds | 3 | 2 | — | 0 | 36 |
2015
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Benzo[g,h,i]perylene | — | — | — | — | — | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 147,406 | 147,406 | — | — | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 3,377 | 3,377 | — | — | — | |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 1,221 | 154 | 51 | 1,016 | 15,767 | |
| Ammonia | 614 | 280 | 329 | 5 | — | |
| Vanadium compounds | 499 | 62 | — | 437 | 5,888 | |
| Lead compounds | 236 | 5 | 4 | 226 | 790 | |
| Hydrogen fluoride | 158 | 157 | 1 | — | — | |
| Polycyclic aromatic compounds | 3 | 3 | — | — | 0 | ♦ Carcinogen |
| Mercury compounds | 3 | 3 | — | 0 | 313 | |
| Dioxin and dioxin-like compounds | 0 | 0 | — | — | — | ♦ Carcinogen |
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 |
|---|---|---|---|---|
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | — | — | — | 62,634 |
| Ammonia | — | — | — | 669 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | — | — | — | 124,370 |
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 ENVIRONMENTAL SERVICES, INC.
SOUTH PORTLAND, ME
|
Polycyclic aromatic compounds | 0 | — | — | — |
|
INTERRA INNOVATION INC
NORTH READING, MA
|
Polycyclic aromatic compounds | 0 | — | — | — |
|
ECO RECOVERY SOLUTIONS
SHREWSBURY, MA
|
Mercury compounds | 92 | — | — | — |
|
CLEAN HARBORS ENVIRONMENTAL SERVICES, INC.
SOUTH PORTLAND, ME
|
Mercury compounds | 0 | — | — | — |
|
INTERRA INNOVATION INC
NORTH READING, MA
|
Benzo[g,h,i]perylene | 0 | — | — | — |
|
CLEAN HARBORS ENVIRONMENTAL SERVICES, INC.
SOUTH PORTLAND, ME
|
Benzo[g,h,i]perylene | 0 | — | — | — |
|
INTERRA INNOVATION INC
NORTH READING, MA
|
Lead compounds | 13 | — | — | — |
|
NORTH COAST SERVICES LLC
CONCORD, NH
|
Lead compounds | 18 | — | — | — |
|
ECO RECOVERY SOLUTIONS
SHREWSBURY, MA
|
Lead compounds | 100 | — | — | — |
|
MURPHYS WASTE OIL SERVICE INC
WOBURN, MA
|
Lead compounds | 0 | — | — | — |
|
CLEAN HARBORS ENVIRONMENTAL SERVICES, INC.
SOUTH PORTLAND, ME
|
Lead compounds | 0 | — | — | — |
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 | HPV | Oct 20, 2023 | Sep 2, 2025 | Resolved |
| caa | FRV | May 5, 2022 | — | Open |
| caa | HPV | Aug 12, 2021 | Mar 4, 2024 | Resolved |
| caa | FRV | Oct 3, 2019 | — | Open |
| rcra | Standards Applicable to Recordkeeping and Reporting Applicable to Small and Large Quantity Generators | Mar 21, 2019 | Mar 29, 2019 | Resolved |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | Mar 21, 2019 | Mar 27, 2019 | Resolved |
| caa | FRV | Mar 1, 2019 | — | Open |
| rcra | Standards Applicable to Recordkeeping and Reporting Applicable to Small and Large Quantity Generators | Oct 25, 2006 | Jan 5, 2007 | Resolved |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | Oct 25, 2006 | Jan 5, 2007 | Resolved |
| cwa | Schedule Event achieved late but reported | Dec 31, 1996 | — | Open |
| cwa | Schedule Event achieved late but reported | Dec 31, 1995 | — | Open |
| cwa | Schedule Event achieved late but reported | Dec 31, 1993 | — | Open |
| cwa | Schedule Event achieved late but reported | Dec 31, 1992 | — | Open |
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 |
|---|---|---|---|---|---|---|
| Oxygen, dissolved percent saturation | DMR, Limited - Numeric Violation | 72.00 % | 75.00 | +4% | Nov 2023 | Open |
| Oxygen, dissolved percent saturation | DMR, Limited - Numeric Violation | 73.00 % | 75.00 | +3% | Jul 2022 | Open |
| Iron, total [as Fe] | DMR, Limited - Numeric Violation | 1.30 mg/L | 1.00 | +30% | Jun 2020 | 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.
Judicial
Clean Air Act
· Case 3604515422 · Jul 10, 2025
$88,373
Judicial
Clean Air Act
· Case 3603902783 · Mar 4, 2024
$113,835
Administrative - Formal
· Case 01-2024-2015 · Dec 19, 2023
Judicial
Clean Air Act
· Case 3603107281 · Apr 8, 2022
$0
WRITTEN INFORMAL
RCRA (Hazardous Waste)
· Case RCRA-NHD000791509-001 · Jun 4, 2019
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