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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
599267 UPRR Dunsmuir Railyard Privately-Owned Business 5750 Sacramento Avenue Dunsmuir, CA 96025 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
220849 Dunsmuir Railyard Siskiyou 5R Service/Commercial Site, NEC Owner and Operator 11/02/2020 None
859264 UPRR Dunsmuir Railyard North Fueling Facility Siskiyou 5R Groundwater Cleanup Site Owner and Operator 06/24/2019 None
881660 North Fueling Facility Dunsmuir Railyard 2022 Response Action Project Siskiyou 5R Dredge/Fill Site Owner 06/08/2022 None
Total Related Places: 3
  
  
  
  
Expand/Contract Related Parties
Related Parties
Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification
547654 Lauren Mancuso Person Legally Responsible Official 11/02/2020 08/07/2024 None
Total Related Parties: 1
  
  
  
  
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?
441128 Enrollee - NPDES 5R 5A471001002 Active NPDINDSML R5-2022-0006-02 10/30/2020 None Discharger 11/02/2020 None N
416877 Enrollee - NPDES 5R 5A471001002 Historical NPDNONMUNIPRCS R5-2016-0076-01 12/11/2017 10/29/2020 Discharger 04/06/2020 None N
448058 Enrollee - 401 Certification 5R 5A47CR00058 Historical CERFILLEXC 2020-0039- EXEC 06/28/2022 01/02/2024 Discharger 06/08/2022 None N
448338 Enrollee - NPDES 5R 5A471001002 Active NPDNONMUNIPRCS R5-2022-0006-02 04/03/2023 None Discharger 06/28/2022 None Y
449118 Individual Monitoring Requirem 5R 5A45UT00006 Active SLIC R5-2019-0713-R04 04/26/2022 None Discharger 09/02/2022 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.
1103935 01/31/2022 CAT2 Zinc, Total Monthly Average limit is 32 ug/L and reported value was 64.7 ug/L. Violation None Report Dunsmuir Railyard 441128 R5-2022-0006-02 Y
1147571 07/16/2025 OEV TPH C13-C22 Maximum Daily (MDEL) limit is 50 ug/L and reported value was 200 ug/ Violation None Report Dunsmuir Railyard 448338 R5-2022-0006-02 N
1104167 12/08/2021 Deficient Monitoring The Discharger did not meet the minimum reporting level to access compliance wit Violation None Report Dunsmuir Railyard 441128 R5-2022-0006-02 Y
1104168 01/18/2022 Deficient Monitoring The Discharger did not meet the minimum reporting level to access compliance wit Violation None Report Dunsmuir Railyard 441128 R5-2022-0006-02 Y
1113511 07/06/2022 Deficient Monitoring The Discharger did not meet the minimum reporting level to access compliance wit Violation None Report Dunsmuir Railyard 441128 R5-2022-0006-02 Y
1124303 12/12/2023 CAT2 Lead, Total Recoverable Maximum Daily (MDEL) limit is 2 ug/L and reported value Violation None Report Dunsmuir Railyard 441128 R5-2022-0006-02 Y
1113514 01/05/2023 CAT2 Lead, Total Maximum Daily (MDEL) limit is 2 ug/L and reported value was 3.67 ug/ Violation None Report Dunsmuir Railyard 441128 R5-2022-0006-02 Y
1125011 12/31/2023 Deficient Monitoring The Discharger did not meet the minimum reporting level to access compliance wit Violation None Report Dunsmuir Railyard 441128 R5-2022-0006-02 Y
1103931 01/18/2022 CAT2 Lead, Total Maximum Daily (MDEL) limit is 2 ug/L and reported value was 8.31 ug/ Violation None Report Dunsmuir Railyard 441128 R5-2022-0006-02 Y
1113508 12/07/2022 CAT2 Lead, Total Maximum Daily (MDEL) limit is 2 ug/L and reported value was 2.22 ug/ Violation None Report Dunsmuir Railyard 441128 R5-2022-0006-02 Y
1113515 01/14/2023 OEV Flow Daily Maximum limit is 0.432 MGD and reported value was 0.660 MGD. Violation None Report Dunsmuir Railyard 441128 R5-2022-0006-02 Y
1127075 01/03/2024 CAT2 Indeno (1,2,3-cd) Pyrene Maximum Daily (MDEL) limit is 0.0088 ug/L and reported Violation N Report Dunsmuir Railyard 448338 R5-2022-0006-02 Y
1124326 11/30/2023 CAT2 Lead, Total Recoverable Monthly Average (Mean) limit is 1 ug/L and reported valu Violation None Report Dunsmuir Railyard 441128 R5-2022-0006-02 Y
1127074 01/31/2024 CAT2 Dibenzo(a,h)anthracene Monthly Average limit is 0.0044 ug/L and reported value w Violation N Report Dunsmuir Railyard 448338 R5-2022-0006-02 Y
1135017 03/07/2024 CAT2 Chrysene Monthly Average limit is 0.0044 ug/L and reported value was 0.0052 ug/L Violation None Report Dunsmuir Railyard 448338 R5-2022-0006-02 Y
1113504 11/16/2022 CAT2 Lead, Total Maximum Daily (MDEL) limit is 2 ug/L and reported value was 2.43 ug/ Violation None Report Dunsmuir Railyard 441128 R5-2022-0006-02 Y
1126996 02/29/2024 CAT2 Lead, Total Monthly Average limit is 1 ug/L and reported value was 2.9 ug/L. Violation N Report Dunsmuir Railyard 441128 R5-2022-0006-02 Y
1127070 01/31/2024 CAT2 Chrysene Monthly Average limit is 0.0044 ug/L and reported value was 0.0058 ug/L Violation N Report Dunsmuir Railyard 448338 R5-2022-0006-02 Y
1087229 12/31/2020 CAT1 Manganese, Total Recoverable Monthly Average limit is 80 ug/L and reported value Violation N Report Dunsmuir Railyard 441128 R5-2022-0006-02 Y
1103933 01/31/2022 CAT2 Lead, Total Monthly Average limit is 1 ug/L and reported value was 8.31 ug/L. Violation None Report Dunsmuir Railyard 441128 R5-2022-0006-02 Y
1103934 01/18/2022 CAT2 Zinc, Total Maximum Daily (MDEL) limit is 64 ug/L and reported value was 64.7 ug Violation None Report Dunsmuir Railyard 441128 R5-2022-0006-02 Y
1113510 12/07/2022 Deficient Monitoring The Discharger did not meet the minimum reporting level to access compliance wit Violation None Report Dunsmuir Railyard 441128 R5-2022-0006-02 Y
1124287 11/20/2023 CAT2 Lead, Total Recoverable Maximum Daily (MDEL) limit is 2 ug/L and reported value Violation None Report Dunsmuir Railyard 441128 R5-2022-0006-02 Y
1124288 11/28/2023 CAT2 Lead, Total Recoverable Maximum Daily (MDEL) limit is 2.0 ug/L and reported valu Violation None Report Dunsmuir Railyard 441128 R5-2022-0006-02 Y
1126976 01/23/2024 CAT2 Lead, Total Maximum Daily (MDEL) limit is 2 ug/L and reported value was 2.25 ug/ Violation N Report Dunsmuir Railyard 441128 R5-2022-0006-02 Y
1126988 02/29/2024 CAT2 Lead, Total Maximum Daily (MDEL) limit is 2 ug/L and reported value was 3.1 ug/L Violation N Report Dunsmuir Railyard 441128 R5-2022-0006-02 Y
1103936 02/10/2022 CAT2 Methanol Maximum Daily (MDEL) limit is 20 ug/L and reported value was 120 ug/L. Violation None Report Dunsmuir Railyard 441128 R5-2022-0006-02 Y
1126987 02/20/2024 CAT2 Lead, Total Maximum Daily (MDEL) limit is 2.0 ug/L and reported value was 4.1 ug Violation N Report Dunsmuir Railyard 441128 R5-2022-0006-02 Y
1127071 01/03/2024 CAT2 Dibenzo(a,h)anthracene Maximum Daily (MDEL) limit is 0.0088 ug/L and reported va Violation N Report Dunsmuir Railyard 448338 R5-2022-0006-02 Y
1113512 09/08/2022 Deficient Monitoring The Discharger did not meet the minimum reporting level to access compliance wit Violation None Report Dunsmuir Railyard 441128 R5-2022-0006-02 Y
1127069 01/31/2024 CAT2 Benzo(a)pyrene Monthly Average limit is 0.0044 ug/L and reported value was 0.008 Violation N Report Dunsmuir Railyard 448338 R5-2022-0006-02 Y
1127076 01/31/2024 CAT2 Indeno (1,2,3-cd) Pyrene Monthly Average limit is 0.0044 ug/L and reported value Violation N Report Dunsmuir Railyard 448338 R5-2022-0006-02 Y
1147552 07/16/2025 CAT1 Manganese, Total Monthly Average (Mean) limit is 80 ug/L and reported value was Violation None Report Dunsmuir Railyard 448338 R5-2022-0006-02 N
1104166 03/11/2022 Deficient Monitoring The Discharger did not meet the minimum reporting level to access compliance wit Violation None Report Dunsmuir Railyard 441128 R5-2022-0006-02 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: 34
*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
431769 Clean-up and Abatement Order R5-2019-0713 CAO R5-2019-0713 for UPRR Dunsmuir Railyard SLIC 06/11/2019 Active
460491 Admin Civil Liability R5-2025-0500 ACL R5-2025-0500 for UPRR Dunsmuir Railyard NPDNONMUNIPRCS 05/06/2025 Historical
459462 Admin Civil Liability R5-2024-0522 ACL R5-2024-0522 for UPRR Dunsmuir Railyard NPDINDSML 12/13/2024 Historical
452032 Notice of Violation None NOV 03/23/2023 for UPRR Dunsmuir Railyard NPDINDSML 03/23/2023 Historical
456494 Notice of Violation None NOV 03/21/2024 for UPRR Dunsmuir Railyard NPDINDSML 03/21/2024 Historical
459605 Notice of Violation None NOV 12/19/2024 for UPRR Dunsmuir Railyard NPDNONMUNIPRCS 12/19/2024 Historical
440609 Admin Civil Liability R5-2020-0532 ACL R5-2020-0532 for UPRR Dunsmuir Railyard NPDNONMUNIPRCS 09/23/2020 Historical
457983 Notice of Violation None NOV 06/28/2024 for UPRR Dunsmuir Railyard NPDINDSML 06/28/2024 Historical
448945 Notice of Violation None NOV 05/23/2022 for UPRR Dunsmuir Railyard NPDINDSML 05/23/2022 Historical
453614 Admin Civil Liability R5-2023-0508 ACL R5-2023-0508 for UPRR Dunsmuir Railyard NPDINDSML 08/30/2023 Historical
Total Enforcement Actions: 10
  
  
  
  
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: 12/04/2025
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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