General Information Party ID Party Name Party Classification Mailing Address Work Phone Email/Website 640218 Sierra Pacific Industries Westwood Privately-Owned Business P.O. Box 101 Westwood, CA 96137 530-251-0241 sdebonis@spi-ind.com Related Places Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date 898148 Camp 7 THP Lassen 6A Timber Harvesting Owner and Operator 12/23/2024 null 889113 2-22EM-00217-LAS: Peconom Emergency Lassen 6A Timber Harvesting Owner and Operator 06/26/2023 null 903893 Superstition THP Lassen 6A Timber Harvesting Owner and Operator 12/10/2025 null 906981 Goodrich Creek Home Ranch Meadow Restoration Project Lassen 5R Dredge/Fill Site Owner 06/15/2026 null 900991 Poplar Valley Hydrology Improvement Project Plumas 5R Dredge/Fill Site Owner 04/29/2025 null 902019 McKenzie Meadows Restoration Project Phase1 Lassen 5R Dredge/Fill Site Owner 07/08/2025 null Related Parties Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification 620969 Keefer Hokanson Person Employee 12/23/2024 null null 539948 Steven DeBonis Person Legally Responsible Official 06/26/2023 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 465430 Enrollee - WDR 5R 5A18CR00036 Enrollee - WDR for Sierra Pacific Industries Westwood Active CERREST 2022-0048-DWQ 07/22/2026 null Discharger 06/15/2026 null 463620 Enrollee - Waiver 6T 6AT51825302 Superstition THP Active TH R6T-2024-0035 11/14/2025 null Discharger 12/10/2025 null 461674 401 Certification 5R 5A18CR00035 401 Cert for Sierra Pacific Industries Westwood Active CERREST null 07/24/2025 null Discharger 07/08/2025 null 460829 Enrollee - WDR 5R 5A32CR00250 Enrollee - WDR for Sierra Pacific Industries Westwood Active CERREST 2022-0048-DWQ 05/27/2025 null Discharger 04/29/2025 null 459535 Enrollee - Waiver 6T 6A51824285 Enrollee - Waiver for Sierra Pacific Industries Westwood Active TH R6T-2024-0035 12/20/2024 null Discharger 12/23/2024 null 453201 Enrollee - Waiver 6T 6AT61822250 Enrollee - Waiver for Sierra Pacific Industries Westwood Active TH R6T-2024-0035 10/06/2022 null Discharger 06/26/2023 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 441724 Keefer Hokanson Enrollee - WDR TH 10/19/2021 Historical 463106 Keefer Hokanson Enrollee - Waiver TH 10/30/2025 Historical 435797 Steven DeBonis Enrollee - WDR TH 01/14/2020 Historical 465611 Keefer Hokanson Enrollee - Waiver TH 07/16/2026 Active 464427 Keefer Hokanson Enrollee - WDR TH 03/10/2026 Active 433252 Steven DeBonis Enrollee - WDR TH 10/17/2019 Active 436391 Steven DeBonis Enrollee - WDR TH 05/28/2020 Active 442986 Steven DeBonis Enrollee - Waiver TH 07/15/2021 Active