General Information Party ID Party Name Party Classification Mailing Address Work Phone Email/Website 619422 Kerry O’Connor null null kerry.oconnor@waterboards.ca.gov Related Places Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date Related Parties Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification 137758 San Francisco Bay Regional Water Quality Control Board Organization Employee 10/22/2020 null Waterboard 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 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. 1144235 05/03/2025 CAT1 Total Suspended Solids (TSS) Weekly Average (Mean) limit is 20 mg/L and reported value was 21 mg/L at EFF-001T. Violation N eSMR Yountville / CA Vets Home WWTP 440857 R2-2020-0026 N 1143732 04/05/2025 OEV Total Coliform Maximum Daily (MDEL) limit is 240 MPN/100 mL and reported value was 1600 MPN/100 mL at EFF-001-D. Violation N eSMR St. Helena City WWTP 442938 R2-2021-0004 N 1143731 04/08/2025 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.1 SU at EFF-001. Violation N eSMR St. Helena City WWTP 442938 R2-2021-0004 N 1143656 04/29/2025 CAT2 Chlorine, Total Residual 1-Hour Average (Mean) limit is 1.8 mg/L and reported value was 2.269 mg/L at EFF-001. Violation N eSMR West County Agency Outfall 457271 R2-2024-0008 N 1142636 03/31/2025 CAT2 Copper, Total Monthly Average (Mean) limit is 8.3 ug/L and reported value was 9.7 ug/L at EFF-001. Violation N eSMR St. Helena City WWTP 442938 R2-2021-0004 N 1142635 03/29/2025 CAT1 Total Suspended Solids (TSS) Weekly Average (Mean) limit is 15 mg/L and reported value was 19 mg/L at EFF-001-D. Violation N eSMR St. Helena City WWTP 442938 R2-2021-0004 N 1142171 01/25/2025 CAT1 Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 57.63 mg/L at EFF-002. Violation N eSMR West County Agency Outfall 457271 R2-2024-0008 N 1142165 02/01/2025 CAT1 Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 48.54 mg/L at EFF-002. Violation N eSMR West County Agency Outfall 457271 R2-2024-0008 N 1142164 02/28/2025 CAT1 Total Suspended Solids (TSS) Monthly Average (Mean) limit is 30 mg/L and reported value was 59.86 mg/L at EFF-002. Violation N eSMR West County Agency Outfall 457271 R2-2024-0008 N 1142163 02/28/2025 CAT1 Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average (Mean) limit is 30 mg/L and reported value was 32.59 mg/L at EFF-002. Violation N eSMR West County Agency Outfall 457271 R2-2024-0008 N 1142162 02/08/2025 CAT1 Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 67.92 mg/L at EFF-002. Violation N eSMR West County Agency Outfall 457271 R2-2024-0008 N 1142161 02/08/2025 CAT1 Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 150.4 mg/L at EFF-002. Violation N eSMR West County Agency Outfall 457271 R2-2024-0008 N 1142160 02/28/2025 CAT1 Total Suspended Solids (TSS), Percent Removal Percent Removal limit is 90 % and reported value was 76 % at EFF-002. Violation N eSMR West County Agency Outfall 457271 R2-2024-0008 N 1141779 02/12/2025 OEV Total Coliform 5-Sample Median limit is 23 MPN/100 mL and reported value was 79 MPN/100 mL at EFF-001-D. Violation N eSMR St. Helena City WWTP 442938 R2-2021-0004 N 1141778 02/11/2025 OEV Total Coliform 5-Sample Median limit is 23 MPN/100 mL and reported value was 79 MPN/100 mL at EFF-001-D. Violation N eSMR St. Helena City WWTP 442938 R2-2021-0004 N 1141777 02/10/2025 OEV Total Coliform 5-Sample Median limit is 23 MPN/100 mL and reported value was 240 MPN/100 mL at EFF-001-D. Violation N eSMR St. Helena City WWTP 442938 R2-2021-0004 N 1141776 02/09/2025 OEV Total Coliform 5-Sample Median limit is 23 MPN/100 mL and reported value was 79 MPN/100 mL at EFF-001-D. Violation N eSMR St. Helena City WWTP 442938 R2-2021-0004 N 1141775 02/09/2025 OEV Total Coliform Daily Maximum limit is 240 MPN/100 mL and reported value was 1600 MPN/100 mL at EFF-001-D. Violation N eSMR St. Helena City WWTP 442938 R2-2021-0004 N 1141774 02/08/2025 OEV Total Coliform Daily Maximum limit is 240 MPN/100 mL and reported value was 1600 MPN/100 mL at EFF-001-D. Violation N eSMR St. Helena City WWTP 442938 R2-2021-0004 N 1141773 02/28/2025 CAT1 Total Suspended Solids (TSS) Monthly Average limit is 15 mg/L and reported value was 16.5 mg/L at EFF-001-D. Violation N eSMR St. Helena City WWTP 442938 R2-2021-0004 N 1141772 02/08/2025 CAT1 Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average limit is 25 mg/L and reported value was 34 mg/L at EFF-001-D. Violation N eSMR St. Helena City WWTP 442938 R2-2021-0004 N 1141771 02/08/2025 CAT1 Total Suspended Solids (TSS) Weekly Average limit is 20 mg/L and reported value was 38 mg/L at EFF-001-D. Violation N eSMR St. Helena City WWTP 442938 R2-2021-0004 N 1141770 02/27/2025 OEV Total Coliform Daily Maximum limit is 240 MPN/100 mL and reported value was 1600 MPN/100 mL at EFF-001-D. Violation N eSMR St. Helena City WWTP 442938 R2-2021-0004 N 1141769 02/08/2025 OEV Total Coliform 5-Sample Median limit is 23 MPN/100 mL and reported value was 79 MPN/100 mL at EFF-001-D. Violation N eSMR St. Helena City WWTP 442938 R2-2021-0004 N 1141768 02/17/2025 OEV Total Coliform Daily Maximum limit is 240 MPN/100 mL and reported value was 1600 MPN/100 mL. Violation N eSMR St. Helena City WWTP 442938 R2-2021-0004 N 1141698 02/04/2025 Deficient Monitoring On February 2, 2025, in preparation for the pending rain events, CMSA staff increased the flow weighted pulse count on a 24-hour composite sampler from 15 pulses to 30 pulses. Historical blending conditions due to rain events result in total flow conditions of 30-60 MG. However, on February 4, 2025, during a storm event, CMSA experienced significantly elevated blending flows of 84.8 million gallons. During this sample event, the flow weighted composite sample collected samples from 00:00 to 13:49. This composite sample collection does not meet the 24-hour Composite Sample requirements outlined in CMSA¿s NPDES Permit Order #R2-2023-006, Attachment G, Section 8.3, which resulted in a non-representative Blended Effluent (EFF-002b) sample collection. The Total suspended solids (TSS) result was not reported for this February 4, 2025. Violation N eSMR Central Marin San. Agcy. WWTP 452582 R2-2023-0006 N 1139434 12/22/2024 OEV Total Coliform Daily Maximum limit is 240 MPN/100 mL and reported value was 920 MPN/100 mL at EFF-001-D. Violation N eSMR St. Helena City WWTP 442938 R2-2021-0004 N 1139433 12/17/2024 OEV Total Coliform Daily Maximum limit is 240 MPN/100 mL and reported value was 540 MPN/100 mL at EFF-001-D. Violation N eSMR St. Helena City WWTP 442938 R2-2021-0004 N 1139432 12/19/2024 OEV Total Coliform Daily Maximum limit is 240 MPN/100 mL and reported value was 1600 MPN/100 mL at EFF-001-D. Violation N eSMR St. Helena City WWTP 442938 R2-2021-0004 N 1138301 11/30/2024 CAT2 Copper, Total Recoverable 1-Hour Average (Mean) limit is 8.3 ug/L and reported value was 9.0 ug/L at EFF-001. Violation N eSMR St. Helena City WWTP 442938 R2-2021-0004 N 1138300 11/30/2024 CAT1 Total Suspended Solids (TSS) Weekly Average (Mean) limit is 20 mg/L and reported value was 24 mg/L at EFF-001-D. Violation N eSMR St. Helena City WWTP 442938 R2-2021-0004 N 1138299 11/30/2024 CAT1 Total Suspended Solids (TSS) Monthly Average (Mean) limit is 15 mg/L and reported value was 24 mg/L at EFF-001-D. Violation N eSMR St. Helena City WWTP 442938 R2-2021-0004 N 1138298 11/30/2024 OEV Total Coliform 5-Sample Median limit is 23 MPN/100 mL and reported value was 49 MPN/100 mL at EFF-001-D. Violation N eSMR St. Helena City WWTP 442938 R2-2021-0004 N 1138296 11/21/2024 OEV Total Coliform Daily Maximum limit is 240 MPN/100 mL and reported value was 1600 MPN/100 mL at EFF-001T. Violation null Report Yountville / CA Vets Home WWTP 440857 R2-2020-0026 N 1138184 11/23/2024 OEV Total Coliform Daily Maximum limit is 240 MPN/100 mL and reported value was 280 MPN/100 mL at EFF-001S. Violation N eSMR Yountville / CA Vets Home WWTP 440857 R2-2020-0026 N 1138183 11/23/2024 CAT1 Total Suspended Solids (TSS) Monthly Average limit is 30 mg/L and reported value was 44.8 mg/L at EFF-001S. *** Dismissed:The Town did not include EFF-001T monitoring results when calculating the monthly average. Using effluent data at EFF-001T and EFF-001S, the total suspended solids monthly average does not exceed the effluent limit. Violation N eSMR Yountville / CA Vets Home WWTP 440857 R2-2020-0026 N 1131497 07/22/2024 ATOX Acute Toxicity 3-Sample Median limit is 90 % survival and reported value was 85 % survival at EFF-001. Violation N eSMR Delta Diablo WWTP 435913 R2-2019-0035 N 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 142470 San Francisco Bay Regional Water Quality Control Board WDR LNDISP 07/31/1996 Historical