Non-Compliance
Clean Air Act
Clean Water Act
RCRA
HILCORP ALASKA, LLC / PBU CENTRAL POWER STATION (CPS)
Quick Summary
- •Currently out of compliance in at least one environmental program (CAA, CWA, or RCRA).
- •Assessed $447,736 in total penalties since records began.
- Address
-
SECTION 30, T11N, R14E UMIAT MERIDIAN
NORTH SLOPE BOROUGH, AK 99734
View on map ↗ - County
- NORTH SLOPE County
- Industry
- Mining, Quarrying, and Oil and Gas Extraction
- NAICS (North American Industry Classification)
- 211120
- Inspections
- 20 · last Dec 2, 2025
- Total Penalties
- $447,736 · last Sep 30, 2024
- Registry ID
- 110070256753
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
Air (CAA)
Qtrs Non-Compliant
Qtrs Non-Compliant
6
Water (CWA)
Qtrs Non-Compliant
Qtrs Non-Compliant
4
Hazardous Waste (RCRA)
Qtrs Non-Compliant
Qtrs Non-Compliant
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 | Linked to Viol. Below | — | — | Open |
| caa | Linked to Viol. Below | — | — | Open |
| caa | Linked to Viol. Below | — | — | Open |
| caa | Linked to Viol. Below | — | — | Open |
| rcra | Standards Applicable to Generators of HW: General | Sep 23, 2024 | Sep 30, 2024 | Resolved |
| caa | FRV | Jul 26, 2024 | — | Open |
| rcra | Standards for Universal Waste Management: Standards for Large Quantity Handlers | May 23, 2024 | Sep 30, 2024 | Resolved |
| rcra | Hazardous Waste Pharmaceuticals | May 23, 2024 | Sep 30, 2024 | Resolved |
| rcra | EPA Administered Permit Programs: the HW Permit Program General Information | May 23, 2024 | Sep 30, 2024 | Resolved |
| rcra | Standards Applicable to Generators of HW: Manifest Requirements Applicable to Small and Large Quantity Generators | May 23, 2024 | Sep 30, 2024 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | May 23, 2024 | Sep 30, 2024 | Resolved |
| rcra | Standards for Used Oil: Generators | May 23, 2024 | Sep 30, 2024 | Resolved |
| caa | FRV | Dec 30, 2021 | — | Open |
| caa | FRV | Apr 6, 2021 | — | Open |
| caa | FRV | Apr 5, 2021 | — | Open |
| caa | FRV | Feb 9, 2021 | — | Open |
| cwa | Monitoring Violations - Invalid/Unrepresentative Sample | Sep 23, 2020 | — | Open |
| caa | FRV | Jul 7, 2020 | — | Open |
| caa | FRV | Jan 15, 2020 | — | Open |
| caa | FRV | Oct 18, 2019 | — | Open |
| caa | FRV | Dec 19, 2018 | — | Open |
| rcra | Violation of a permit condition or requirement | Nov 15, 2018 | Oct 23, 2019 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Nov 15, 2018 | Oct 23, 2019 | Resolved |
| caa | FRV | Dec 15, 2017 | — | Open |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | Apr 4, 2017 | Apr 4, 2017 | Resolved |
| rcra | Standards for Used Oil: Generators | Apr 4, 2017 | Apr 4, 2017 | Resolved |
| rcra | Standards for Universal Waste Management: Standards for Large Quantity Handlers | Apr 4, 2017 | Jun 19, 2017 | Resolved |
| rcra | Standards for Universal Waste Management: Standards for Small Quantity Handlers | Apr 4, 2017 | Apr 4, 2017 | Resolved |
| rcra | Interim Status Standards for Owners and Operators of HW TSDs: Use and Management of Containers | Apr 4, 2017 | Apr 4, 2017 | Resolved |
| caa | FRV | Mar 10, 2017 | — | Open |
| caa | FRV | Dec 15, 2016 | — | Open |
| caa | FRV | Dec 9, 2016 | — | Open |
| caa | FRV | Apr 22, 2016 | — | Open |
| rcra | Standards for Universal Waste Management: Standards for Small Quantity Handlers | Sep 13, 2013 | Jan 29, 2014 | Resolved |
| rcra | Interim Status Standards for Owners and Operators of HW TSDs: Use and Management of Containers | Sep 13, 2013 | Jan 29, 2014 | Resolved |
| rcra | Standards for Universal Waste Management: Standards for Small Quantity Handlers | Nov 8, 2011 | Dec 16, 2011 | Resolved |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | Nov 8, 2011 | Dec 16, 2011 | Resolved |
| rcra | Standards for the Management of Specific HW and Specific Types of HW Management Facilities: Recyclable Materials Used in a Manner Constituting Disposal | Nov 8, 2011 | Dec 16, 2011 | Resolved |
| rcra | Interim Status Standards for Owners and Operators of HW TSDs: Financial Requirements | Sep 24, 2008 | Oct 21, 2008 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Nov 18, 2004 | Jan 14, 2005 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: General | Oct 4, 2000 | Oct 4, 2000 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: General Facility Standards | Apr 7, 1999 | Apr 7, 1999 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: Use and Management of Containers | Mar 12, 1996 | Mar 12, 1996 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: General | Jul 21, 1994 | Nov 28, 1994 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Jul 21, 1994 | Nov 28, 1994 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: General Facility Standards | Jun 18, 1992 | Jun 18, 1992 | Resolved |
| rcra | Land Disposal Restrictions: General | Jun 18, 1992 | Jun 18, 1992 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Jul 10, 1991 | Jun 18, 1992 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: Manifest System, Recordkeeping and Reporting | Jul 9, 1991 | Jun 16, 1992 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: General | Jul 9, 1991 | Jun 16, 1992 | 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 |
|---|---|---|---|---|---|---|
| BOD, 5-day, percent removal | DMR, Limited - Numeric Violation | 84.00 % | 85.00 | +7% | Dec 2025 | Open |
| Manganese, total recoverable | DMR, Limited - Numeric Violation | 0.06 mg/L | 0.05 | +18% | Sep 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 980.00 MPN/100mL | 400.00 | +145% | May 2025 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 50.00 mg/L | 45.00 | +11% | Mar 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 1,732.90 MPN/100mL | 400.00 | +333% | Jul 2024 | Open |
| Manganese, total recoverable | DMR, Limited - Numeric Violation | 0.42 mg/L | 0.05 | +734% | Sep 2022 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 2,419.60 MPN/100mL | 400.00 | +99,999% | Mar 2022 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 608.20 MPN/100mL | 200.00 | +204% | Mar 2022 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 2,419.60 MPN/100mL | 400.00 | +99,999% | Jul 2019 | Open |
| Solids, suspended percent removal | DMR, Limited - Numeric Violation | 82.30 % | 85.00 | +18% | Jul 2019 | Open |
| BOD, 5-day, percent removal | DMR, Limited - Numeric Violation | 83.40 % | 85.00 | +11% | Jun 2016 | 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.
Warning Letter
Clean Air Act
· Case 3604743978 · Sep 1, 2025
Administrative - Formal
· Case 10-2024-0070 · Sep 30, 2024
$223,868
Warning Letter
Clean Air Act
· Case 3602482163 · Apr 6, 2021
Warning Letter
Clean Air Act
· Case 3602109342 · Jan 15, 2020
WRITTEN INFORMAL
RCRA (Hazardous Waste)
· Case RCRA-AKD000643239-002 · Nov 5, 2019
$125,100
Administrative - Formal
· Case 10-2019-0143 · Nov 5, 2019
$125,100
Warning Letter
Clean Air Act
· Case 3601708338 · Dec 19, 2018
FINAL 3008(A) COMPLIANCE ORDER
RCRA (Hazardous Waste)
· Case RCRA-AKD000643239-001 · Nov 15, 2018
Warning Letter
Clean Air Act
· Case 3601314932 · Dec 15, 2017
Warning Letter
Clean Air Act
· Case 3601043097 · Mar 10, 2017
Warning Letter
Clean Air Act
· Case 3600908787 · Dec 9, 2016
Warning Letter
Clean Air Act
· Case 3600752518 · Apr 25, 2016
Administrative - Formal
· Case 10-2007-0222 · Oct 3, 2007
WRITTEN INFORMAL
RCRA (Hazardous Waste)
· Case RCRA-AKD000643239-000 · Jun 11, 1991
WRITTEN INFORMAL
RCRA (Hazardous Waste)
· Case RCRA-AKD000643239-006 · Jun 29, 1990
WRITTEN INFORMAL
RCRA (Hazardous Waste)
· Case RCRA-AKD000643239-012 · Dec 27, 1983
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