Non-Compliance
TRI Reporter
Clean Water Act
RCRA
MARATHON (MPLX) SILOAM PLANT
Quick Summary
- •Released 81 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.
- Address
-
2 MARK WEST DRIVE
SOUTH SHORE, KY 41175
View on map ↗ - County
- GREENUP County
- Industry
- Manufacturing
- NAICS (North American Industry Classification)
- 327120
- Inspections
- 6 · last Sep 25, 2025
- Total Penalties
- $0 · last Jun 23, 2009
- Registry ID
- 110000591262
How This Compares
#291
of 398 TRI reporters in KY
#10,012
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.
1
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)
-90% overall
| Year | Total Releases (lbs) | vs Prior Year |
|---|---|---|
| 2015 | 360 | — |
| 2016 | 114 | -68% |
| 2017 | 81 | -29% |
| 2018 | 121 | +48% |
| 2020 | 29 | — |
| 2021 | 202 | +595% |
| 2022 | 47 | -77% |
| 2023 | 70 | +50% |
| 2024 | 37 | -47% |
2024
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 37 | 32 | 5 | — | 1,361 |
2023
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 70 | 65 | 5 | — | 2,636 |
2022
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 47 | 46 | 1 | — | 2,700 |
2021
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 202 | 201 | 0 | — | 2 |
2020
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 29 | 29 | 0 | — | 3,157 |
2018
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 63 | 63 | 0 | — | 6,774 | |
| Ethylene glycol | 57 | 45 | 12 | — | 677 |
2017
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 81 | 81 | 0 | — | 7,280 |
2016
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 114 | 113 | 1 | — | 3,122 |
2015
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 250 | 249 | 1 | — | 8,330 | |
| Ethylene glycol | 110 | 46 | 64 | — | 833 |
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 |
|---|
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 |
|---|---|---|---|---|---|
|
GREEN VALLEY LANDFILL
ASHLAND, KY
|
Chromium compounds (except for chromite ore mined in the Transvaal Region) | 1,361 | — | — | — |
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 - Narrative Effluent Violation | Oct 11, 2018 | — | Open |
| cwa | Permit Violations - Violation Specified in Comment | Nov 12, 2014 | — | Open |
| cwa | Effluent Violations - Narrative Effluent Violation | Oct 27, 2011 | — | Open |
| cwa | Management Practice Violations - Best Management Practice Deficiencies | Feb 23, 2011 | — | Open |
| cwa | Permit Violations - Violation Specified in Comment | Feb 23, 2011 | — | Open |
| rcra | State Statutory or Regulatory requirements that are broader-in-scope than the federal RCRA requirements | Nov 18, 2008 | Jan 12, 2009 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Nov 18, 2008 | Dec 11, 2008 | Resolved |
| rcra | Standards Applicable to Recordkeeping and Reporting Applicable to Small and Large Quantity Generators | Nov 18, 2008 | Jan 12, 2009 | Resolved |
| rcra | Interim Status Standards for Owners and Operators of HW TSDs: General Facility Standards | Nov 18, 2008 | Feb 10, 2009 | Resolved |
| rcra | Standards Applicable to Recordkeeping and Reporting Applicable to Small and Large Quantity Generators | Apr 14, 1998 | Apr 27, 1998 | Resolved |
| rcra | Standards Applicable to Recordkeeping and Reporting Applicable to Small and Large Quantity Generators | Feb 15, 1995 | Mar 10, 1995 | 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 |
|---|---|---|---|---|---|---|
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.65 mg/L | 0.18 | +261% | Apr 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 88.00 mg/L | 60.00 | +47% | Oct 2021 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 64.00 mg/L | 30.00 | +113% | Feb 2018 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 64.00 mg/L | 60.00 | +7% | Feb 2018 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 153.00 mg/L | 60.00 | +155% | Mar 2017 | Open |
| Oil and grease | DMR, Limited - Numeric Violation | 62.00 mg/L | 10.00 | +520% | Jan 2015 | Open |
| Oil and grease | DMR, Limited - Numeric Violation | 118.00 mg/L | 15.00 | +687% | Jan 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.
ADMINISTRATIVE CONFERENCE (ENFORCEMENT CONFERENCE HELD WITH FACILITY)
RCRA (Hazardous Waste)
· Case RCRA-KYD094202736-001 · Nov 18, 2008
State Administrative Order of Consent
Clean Water Act
· Case KY-N00000870 · Nov 12, 1998
$15,000
WRITTEN INFORMAL
RCRA (Hazardous Waste)
· Case RCRA-KYD094202736-000 · Apr 14, 1998
State CWA Non Penalty AO
Clean Water Act
· Case KY-N00001032 · Apr 1, 1998
$15,000
State CWA Non Penalty AO
Clean Water Act
· Case KY-N00001024 · Aug 11, 1997
$4,000
State Administrative Order of Consent
Clean Water Act
· Case KY-N00001338 · Oct 22, 1996
$6,000
CWA 309A AO For Compliance
Clean Water Act
· Case 04-1985-N017 · Apr 8, 1985
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