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	null	null	

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	null	
859264	UPRR Dunsmuir Railyard North Fueling Facility	Siskiyou	5R	Groundwater Cleanup Site	Owner and Operator	06/24/2019	null	
881660	North Fueling Facility Dunsmuir Railyard 2022 Response Action Project	Siskiyou	5R	Dredge/Fill Site	Owner	06/08/2022	null	

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	null	

Regulatory Measures(non-enforcement)
Reg. Measure ID	Regulatory Measure Type	Region	WDID	Title	Status	Program	Order No.	RM Effective Date	RM Termination Date	Relationship	Relationship Start Date	Relationship End Date
449118	Individual Monitoring Requirem	5R	5A45UT00006	Ind MRP R5-2019-0713-R04 for UPRR Dunsmuir Railyard	Active	SLIC	R5-2019-0713-R04	04/26/2022	null	Discharger	09/02/2022	null	
416877	Enrollee - NPDES	5R	5A471001002	Enrollee under NPDES Limited Threat GO R5-2016-0076-030 for Union Pacific Railroad Company Dunsmuir Railyard	Historical	NPDNONMUNIPRCS	R5-2016-0076-01	12/11/2017	10/29/2020	Discharger	04/06/2020	null	
448338	Enrollee - NPDES	5R	5A471001002	Enrollee - NPDES R5-2022-0006-011 for UPRR Dunsmuir Railyard Dewatering Project	Active	NPDNONMUNIPRCS	R5-2022-0006-02	04/03/2023	null	Discharger	06/28/2022	null	
441128	Enrollee - NPDES	5R	5A471001002	Enrollee - NPDES R5-2022-0006-02 for UPRR Dunsmuir Railyard	Active	NPDINDSML	R5-2022-0006-02	10/30/2020	null	Discharger	11/02/2020	null	
448058	Enrollee - 401 Certification	5R	5A47CR00058	Enrollee - 401 Certification for UPRR Dunsmuir Railyard	Historical	CERFILLEXC	2020-0039- EXEC	06/28/2022	01/02/2024	Discharger	06/08/2022	null	

Violations within the past calendar 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.

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	
440609	Admin Civil Liability	R5-2020-0532	ACL R5-2020-0532 for UPRR Dunsmuir Railyard	NPDNONMUNIPRCS	09/23/2020	Historical	
448945	Notice of Violation	null	NOV 05/23/2022 for UPRR Dunsmuir Railyard	NPDINDSML	05/23/2022	Historical	
452032	Notice of Violation	null	NOV 03/23/2023 for UPRR Dunsmuir Railyard	NPDINDSML	03/23/2023	Historical	
453614	Admin Civil Liability	R5-2023-0508	ACL R5-2023-0508 for UPRR Dunsmuir Railyard	NPDINDSML	08/30/2023	Historical	
456494	Notice of Violation	null	NOV 03/21/2024 for UPRR Dunsmuir Railyard	NPDINDSML	03/21/2024	Historical	
457983	Notice of Violation	null	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	
459605	Notice of Violation	null	NOV 12/19/2024 for UPRR Dunsmuir Railyard	NPDNONMUNIPRCS	12/19/2024	Historical	
460491	Admin Civil Liability	R5-2025-0500	ACL R5-2025-0500 for UPRR Dunsmuir Railyard	NPDNONMUNIPRCS	05/06/2025	Active	

Regulatory Measures linked to Related Parties
Reg. Measure ID	Organization	Regulatory Measure Type	Program	Effective Date	Status