General Information Party ID Party Name Party Classification Mailing Address Work Phone Email/Website 651864 Thompson Builders Corp Privately-Owned Business 5400 Hannah Ranch Road Novato, CA 94945 415-456-8972 wilt@tbcorp.com Related Places Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date 893561 R6 General Permit for Limited Threat Discharges to Surface Water El Dorado 6A Service/Commercial Site, NEC None null null 888009 CA FLAP SR 89(4) Fanny Bridge Project Placer 6A Dredge/Fill Site Operator 07/23/2025 null Related Parties Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification 651865 Wil Thompson Person Legally Responsible Official 07/23/2025 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 461916 Enrollee - NPDES 6T 6A312507003 Enrollee - NPDES for Thompson Builders Corp Historical NPDNONMUNIPRCS R6T-2014-0049 08/04/2025 08/22/2025 Discharger 07/23/2025 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