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   Party At-A-Glance Report

  
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General Information
Party ID Party Name Party Classification Mailing Address Work Phone Email/Website
562173 Sentinel Peak Resources California LLC Privately-Owned Business 5640 South Fairfax Avenue Los Angeles, CA 90056 None None
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
232882 Inglewood Oil Field (Baldwin Hills) Land Treatment Units Los Angeles 4 Land Treatment Unit Owner and Operator 01/01/2017 None
791884 Inglewood Oil Field Los Angeles 4 Oil/Gas Extraction Owner and Operator 01/01/2017 None
243304 Montebello Oil Field Los Angeles 4 Land Treatment Unit Owner 01/01/2017 None
897759 Inglewood Oil Field Los Angeles 4 Land Treatment Unit Owner and Operator 11/27/2024 None
Total Related Places: 4
  
  
  
  
Expand/Contract Related Parties
Related Parties
Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification
581241 Joseph Walters Person Legally Responsible Official 11/30/2018 None None
581241 Joseph Walters Person Data Submitter 07/19/2018 11/29/2018 None
568599 John Landgard Person Legally Responsible Official 10/05/2017 02/26/2019 None
556948 James Nelson Person Data Submitter 02/01/2017 None None
562305 Justin Campbell Person Data Submitter 02/01/2017 None None
520196 Patrick Vowell Person Legally Responsible Official 01/01/2017 05/22/2020 None
Total Related Parties: 6
  
  
  
  
Expand/Contract Regulatory Measures
Regulatory Measures (non-enforcement)
Reg. Measure ID Regulatory Measure Type Region WDID Status Program Order No. RM Effective Date RM Termination Date Relationship Relationship Start Date Relationship End Date Amended?
459296 Enrollee - WDR 4 None Active LNDISPOTH 90-148 10/24/2024 None Discharger 10/24/2024 None N
383620 NPDES Permit 4 4B192113018 Historical NPDNONMUNIPRCS R4-2013-0021 03/09/2013 03/31/2018 Discharger 01/01/2017 None N
416564 NPDES Permit 4 4B192113018 Active NPDINDLRG R4-2018-0020 04/01/2018 None Discharger 10/02/2017 None N
389308 WDR 4 4B191396002 Historical LNDISPOTH R4-2013-0023 02/07/2013 10/24/2024 Discharger 01/01/2017 None N
148289 WDR 4 4B191396001 Historical LNDISPOTH 01-055 04/26/2001 07/14/2022 Discharger 01/01/2017 None N
Total Regulatory Measures: 5
  
  
  
  
Expand/Contract Violations
Violations within the past five years
Violation ID Occurrence Date Violation Type Violation Description(+) Violation Status Priority Source Facility Name Violated Reg. Meas. ID Violated Reg. Meas. Order No. Linked to Enf.
1116674 03/29/2023 CAT2 Hydrocarbons, Petroleum Daily Maximum limit is 5 lb/day and reported value was 6 Violation N eSMR Inglewood Oil Field 416564 R4-2018-0020 Y
1125990 12/28/2022 Deficient Reporting pH and temperature not analyzed within a 15 min. holding time for Eff-001. Violation None Report Inglewood Oil Field 416564 R4-2018-0020 N
1143310 03/12/2025 OEV TPH C13-C22 Daily Maximum limit is 100 g/day and reported value was 267 g/day at Violation N eSMR Inglewood Oil Field 416564 R4-2018-0020 N
1116683 01/17/2023 OEV Turbidity Daily Maximum limit is 75 NTU and reported value was 102 NTU at EFF-00 Violation N eSMR Inglewood Oil Field 416564 R4-2018-0020 Y
1116684 02/24/2023 OEV Turbidity Daily Maximum limit is 75.0 NTU and reported value was 118 NTU at EFF- Violation N eSMR Inglewood Oil Field 416564 R4-2018-0020 Y
1141834 03/06/2024 OEV pH Instantaneous Minimum limit is 6.5 SU and reported value was 6.4 SU at EFF-00 Violation None eSMR Inglewood Oil Field 416564 R4-2018-0020 Y
1125989 12/31/2022 Deficient Reporting Asbestos not reported for Eff-001 and Eff-002 once per year. 1,2,4 trichlorobenz Violation None Report Inglewood Oil Field 416564 R4-2018-0020 N
1116676 03/29/2023 OEV Turbidity Daily Maximum limit is 75 NTU and reported value was 123 NTU at EFF-00 Violation N eSMR Inglewood Oil Field 416564 R4-2018-0020 Y
1116678 03/29/2023 CAT2 Hydrocarbons, Petroleum Daily Maximum limit is 1000 ug/L and reported value was Violation N eSMR Inglewood Oil Field 416564 R4-2018-0020 Y
1116679 03/21/2023 CAT1 Total Suspended Solids (TSS) Daily Maximum limit is 75 mg/L and reported value w Violation N eSMR Inglewood Oil Field 416564 R4-2018-0020 Y
1125995 01/05/2023 CAT1 Total Suspended Solids (TSS) Daily Maximum limit is 75 mg/L and reported value w Violation None eSMR Inglewood Oil Field 416564 R4-2018-0020 Y
1125996 01/05/2023 CAT1 Total Suspended Solids (TSS) Daily Maximum limit is 75.0 mg/L and reported value Violation None eSMR Inglewood Oil Field 416564 R4-2018-0020 Y
1126005 03/31/2023 Deficient Reporting Asbestos, Methyl Chloride, Tetrachloroethylene, 1,2-trans-Dichloroethylene, 2-Me Violation None Report Inglewood Oil Field 416564 R4-2018-0020 N
1116672 03/29/2023 OEV Turbidity Daily Maximum limit is 75 NTU and reported value was 86.8 NTU at EFF-0 Violation N eSMR Inglewood Oil Field 416564 R4-2018-0020 Y
1116673 03/29/2023 OEV Turbidity Daily Maximum limit is 75 NTU and reported value was 285 NTU at EFF-00 Violation N eSMR Inglewood Oil Field 416564 R4-2018-0020 Y
1127566 02/19/2024 CAT1 Total Suspended Solids (TSS) Daily Maximum limit is 75.0 mg/L and reported value Violation N eSMR Inglewood Oil Field 416564 R4-2018-0020 Y
1091174 12/31/2021 Deficient Reporting Asbestos not reported once per year for Eff-001 and Eff-002 Violation N Report Inglewood Oil Field 416564 R4-2018-0020 N
1127567 02/19/2024 Deficient Reporting Turbidity Daily Maximum limit is 75 NTU and reported value was 129 NTU at EFF-00 Violation N eSMR Inglewood Oil Field 416564 R4-2018-0020 N
1126008 12/21/2023 Deficient Reporting E. Coli not analyzed once per discharge for Eff-001, EFF-002, and EFF-006 on 12/ Violation None Report Inglewood Oil Field 416564 R4-2018-0020 N
1126006 12/31/2023 Deficient Reporting pH and temperature not analyzed within a 15 min. holding time for Eff-001, EFF-0 Violation None Report Inglewood Oil Field 416564 R4-2018-0020 N
1126007 12/21/2023 Deficient Reporting Flow was reported as a daily discharge for Eff-001, EFF-002, and EFF-006 on 12/2 Violation None Report Inglewood Oil Field 416564 R4-2018-0020 N
1116681 01/17/2023 OEV Turbidity Daily Maximum limit is 75 NTU and reported value was 77.2 NTU at EFF-0 Violation N eSMR Inglewood Oil Field 416564 R4-2018-0020 Y
1141833 03/06/2024 OEV pH Instantaneous Minimum limit is 6.5 SU and reported value was 6.2 SU at EFF-00 Violation None eSMR Inglewood Oil Field 416564 R4-2018-0020 Y
1141881 01/22/2024 OEV pH Instantaneous Minimum limit is 6.5 SU and reported value was 6.4 SU at EFF-00 Violation None eSMR Inglewood Oil Field 416564 R4-2018-0020 Y
1141925 01/22/2024 OEV pH Instantaneous Minimum limit is 6.5 SU and reported value was 6.2 SU at EFF-00 Violation None eSMR Inglewood Oil Field 416564 R4-2018-0020 Y
1142158 03/31/2024 Deficient Reporting pH and temperature not analyzed within a 15 min. holding time for Eff-001, EFF-0 Violation None Report Inglewood Oil Field 416564 R4-2018-0020 N
1116675 01/05/2023 OEV Turbidity Daily Maximum limit is 75 NTU and reported value was 148 NTU at EFF-00 Violation N eSMR Inglewood Oil Field 416564 R4-2018-0020 Y
1116680 01/05/2023 CAT1 Settleable Solids Daily Maximum limit is 0.3 ml/L and reported value was 0.5 ml/ Violation N eSMR Inglewood Oil Field 416564 R4-2018-0020 Y
1116682 01/17/2023 OEV Turbidity Daily Maximum limit is 75 NTU and reported value was 97.2 NTU at EFF-0 Violation N eSMR Inglewood Oil Field 416564 R4-2018-0020 Y
1127565 01/02/2024 CAT2 Hydrocarbons, Petroleum Daily Maximum limit is 100 ug/L and reported value was 6 Violation N eSMR Inglewood Oil Field 416564 R4-2018-0020 Y
1141926 01/22/2024 OEV pH Instantaneous Minimum limit is 6.5 SU and reported value was 6.4 SU at EFF-00 Violation None eSMR Inglewood Oil Field 416564 R4-2018-0020 Y
1143311 03/12/2025 OEV TPH C13-C22 Daily Maximum limit is 100 g/day and reported value was 468 g/day at Violation N eSMR Inglewood Oil Field 416564 R4-2018-0020 N
1116677 01/05/2023 OEV Turbidity Daily Maximum limit is 75 NTU and reported value was 212 NTU at EFF-00 Violation N eSMR Inglewood Oil Field 416564 R4-2018-0020 Y
Report currently showing last five years of violations. Click here to return to viewing one year of violations. Refer to the Interactive Violation Report for more data.
Total Violations: 33
*Click the "(+/-) Violation Description" link to expand and contract the violation description.
  
  
  
  
Expand/Contract Enforcement Actions
Enforcement Actions
Enforcement ID Enforcement Type Enf. Order No. Title Program Effective Date Status
461336 Expedited Payment Letter R4-2025-0150 EPL R4-2025-0150 for Sentinel Peak Resources California LLC NPDINDLRG 05/01/2025 Active
456701 Admin Civil Liability R4-2024-0179 ACL R4-2024-0179 for Sentinel Peak Resources California LLC NPDINDLRG 07/31/2024 Historical
443924 Admin Civil Liability R4-2021-0100 ACL R4-2021-0100 for Sentinel Peak Resources California LLC NPDINDLRG 10/19/2021 Historical
435255 Admin Civil Liability R4-2019-0120 ACL R4-2019-0120 for Sentinel Peak Resources California LLC NPDNONMUNIPRCS 03/03/2020 Historical
419563 Time Schedule Order R4-2018-0021 TSO R4-2018-0021 for Sentinel Peak Resources California LLC NPDINDLRG 04/01/2018 Active
389233 Time Schedule Order R4-2013-0022 TSO R4-2013-0022 for Sentinel Peak Resources California LLC NPDNONMUNIPRCS 03/09/2013 Historical
Total Enforcement Actions: 6
  
  
  
  
Expand/Contract Enforcement Actions
Regulatory Measures linked to Related Parties
Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status
Total Regulatory Measures linked to Related Parties: 0
  
  
The current report was generated with data as of: 10/22/2025
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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