General Information Party ID Party Name Party Classification Mailing Address Work Phone Email/Website 41467 Sonoma County Board of Supervisors County Agency 2550 Ventura Avenue Santa Rosa, CA 95403 707-565-1909 null Related Places Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date 256062 Santa Rosa Area MS4 Phase 1 Permit Sonoma 1 MS4 Owner 03/27/1997 null Related Parties Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification 532297 Santa Rosa Area MS4 Phase 1 Organization In an Agreement With 03/14/2012 null Government Agency Combination 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 179203 Co-Permitee 1 1B02150SSON 1B02150SSON Sonoma County Board of Sups SR MS4 Historical MNSTW1 R1-2009-0050 10/01/2009 01/05/2016 Discharger 09/01/2005 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 407988 Admin Civil Liability R1-2016-0024 ACL R1-2016-0024 for Sonoma County Board of Supervisors MNSTW1 07/11/2016 Historical 399341 Notice of Violation null NOV 11/25/2014 for Sonoma Cnty Board of Supervisors MNSTW1 11/25/2014 Active 389866 Notice of Violation null NOV 11/01/2012 for Sonoma Cnty Board of Supervisors MNSTW1 11/01/2012 Historical 342227 Clean-up and Abatement Order R1-2007-0097 1B02150SSON Sonoma County Fair Grounds CAO R1-2007-0097 MNSTW1 10/30/2007 Historical Regulatory Measures linked to Related Parties Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status 371785 Santa Rosa Area MS4 Phase 1 NPDES Permit MNSTW1 10/01/2009 Historical