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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 year
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.
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
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
Report defaults to display violations within the last year. Click here to see last five years of violations. Refer to the Interactive Violation Report for more data.
Total Violations: 2
*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
460491 Admin Civil Liability R5-2025-0500 ACL R5-2025-0500 for UPRR Dunsmuir Railyard NPDNONMUNIPRCS 05/06/2025 Active
431769 Clean-up and Abatement Order R5-2019-0713 CAO R5-2019-0713 for UPRR Dunsmuir Railyard SLIC 06/11/2019 Active
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
459462 Admin Civil Liability R5-2024-0522 ACL R5-2024-0522 for UPRR Dunsmuir Railyard NPDINDSML 12/13/2024 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: 10/14/2025
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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