General Information
Party ID	Party Name	Party Classification	Mailing Address	Work Phone	Email/Website
645895	HGS, LLC dba RES Environmental Operating Company, LLC	Privately-Owned Business	2125 19th Street 200 Sacramento, CA 95818	415-259-9793	null	

Related Places
Place ID	Place Name	County	Region	Place Type	Relationship to Party	Relationship Start Date	Relationship End Date
895373	Mendocino Coast Mitigation Bank Restoration Project	Mendocino	1	Dredge/Fill Site	Operator	06/21/2024	null	
900335	Curtis I & II Mitigation Sites for the Bouquet Canyon Residential Development	Los Angeles	4	Dredge/Fill Site	Owner	03/18/2025	null	
902471	Rainbow Creek Restoration Project	San Diego	9	Dredge/Fill Site	Owner	08/12/2025	null	

Related Parties
Party ID	Party Name	Party Type	Role/Relationship	Relationship Start Date	Relationship End Date	Classification
527275	Tim Degraff	Person	Employee	06/17/2024	null	null	
527275	Tim Degraff	Person	Legally Responsible Official	06/21/2024	null	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
460453	Enrollee - 401 Certification	4	4WQC40125032	Enrollee - 401 Certification for HGS, LLC dba RES Environmental Operating Company, LLC	Active	CERMIT	2022-0048-DWQ	10/03/2025	null	Discharger	03/06/2025	null	
462151	Enrollee - 401 Certification	9	9 000004100	Enrollee - 401 Cert R9-2025-0154 for HGS, LLC dba RES EnvOperatg Co, LLC (Rainbow Creek Restoration Proj)	Active	CERREST	SB12006GN	09/16/2025	null	Discharger	08/12/2025	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

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