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 California Integrated Water Quality System Project (CIWQS)
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Place ID 257754
  
  
  
  
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General Information
Region Place ID Place Name Place Type Place Address Place County
2 257754 Sonoma Valley County SD WWTP Wastewater Treatment Facility 22675 8 th Sonoma, CA, 95476 Sonoma

Expand/Contract Related Parties
Related Parties
Party Party Type Party Name Role Classification Relationship Start Date Relationship End Date
619422 Person Kerry O’Connor Case Worker 08/02/2021
618896 Person Cesar Galvan Is A Data Submitter For 10/14/2020
610902 Person Bret Alan Beaudreau Is Onsite Manager For 08/04/2020 10/31/2023
593405 Person Anna Gallagher Case Worker 01/02/2019 02/12/2021
551001 Person Elyse Will Is A Data Submitter For 11/29/2016 10/14/2020
452269 Person Wendy Gjestland Is A Data Submitter For 03/18/2015 01/26/2023
547413 Person Nazareth Tesfai Is A Data Submitter For 03/18/2015 11/16/2020
526468 Person George Lincoln Is A Data Submitter For 03/18/2015
440869 Person Garett Walker Is Onsite Manager For 01/23/2015
523307 Person Ryan Kirchner Is Onsite Manager For 01/14/2015 04/14/2020
541829 Person Frank Mello Is Onsite Manager For 08/28/2013
530828 Person Dylan Garner Case Worker 01/06/2012 05/16/2012
529124 Person Brian G Anderson Is Onsite Manager For 09/21/2011 03/03/2015
373039 Person Hody D. Wilson Is Onsite Manager For 07/06/2011 09/10/2013
527668 Person Ellen H. Simm Is Onsite Manager For 07/06/2011
523182 Person Cielito Gray Is A Data Submitter For 07/06/2011 11/16/2020
374036 Person Jim Zambenini Is A Data Submitter For 07/06/2011 12/19/2014
524113 Person Grant Davis Contact 08/09/2010
373039 Person Hody D. Wilson Operator 01/01/2010 09/10/2013
374866 Person Roni Bonson Is Onsite Manager For 04/09/2007 01/22/2016
144169 Person Pamela Jeane Contact 10/27/2006
41499 Organization Sonoma County Water Agency (SCWA) Operator County Agency 01/01/1995
147379 Organization Sonoma Valley County Sanitation District Owner 01/01/1980
137758 Organization San Francisco Bay Regional Water Quality Control Board Regulating Waterboard 01/01/1980
Total Related Parties: 24

Expand/Contract Regulatory Measures
Regulatory Measures
Reg Measure ID Reg Measure Type Region Program Order No. WDID Effective Date Expiration Date Status Amended?
432957 NPDES Permit 2 NPDMUNILRG R2-2019-0019 2 494009001 09/01/2019 08/31/2024 Active Y
430642 Co-Permitee 2 NPDMUNILRG R2-2019-0017 2 494009001 07/01/2019 06/30/2024 Active N
396238 NPDES Permit 2 NPDMUNILRG R2-2014-0020 2 494009001 07/01/2014 06/30/2019 Historical N
389154 Co-Permitee 2 NPDMUNILRG R2-2017-0041 2 494009001 01/01/2013 12/31/2017 Active Y
378829 Co-Permitee 2 NPDMUNILRG R2-2011-0012 2 494009001 04/01/2011 12/31/2012 Historical N
341547 NPDES Permit 2 NPDMUNILRG R2-2008-0090 2 494009001 12/01/2008 11/30/2013 Historical Y
360533 Co-Permitee 2 NPDMUNILRG R2-2007-0077 2 494009001 03/01/2008 12/31/2012 Historical N
131927 NPDES Permit 2 NPDMUNILRG R2-2002-0046 2 494009001 03/20/2002 03/20/2007 Historical Y
353524 NPDES Permit 2 NPDMUNILRG R2-2002-0046 2 494009001 03/20/2002 03/20/2002 Never Active N
147408 NPDES Permit 2 NPDMUNILRG 98-111 2 494009001 10/21/1998 10/21/2003 Historical N
142327 Reclamation Requirements 2 REC 92-067 06/17/1992 06/17/1997 Historical N
142324 NPDES Permit 2 NPDMUNILRG 92-063 2 494009001 06/17/1992 06/17/1997 Historical N
140965 NPDES Permit 2 NPDMUNILRG 86-089 2 494009001 11/19/1986 11/19/1991 Historical N
145535 NPDES Permit 2 NPDMUNILRG 81-045 2 494009001 07/15/1981 07/15/1986 Historical N
Total Reg Measures: 14

Expand/Contract Violations
Violations
Violation ID Occurred Date Violation Type (-) Violation Description Corrective Action Status Classification Source
1112476 12/31/2022 OEV Enterococci Monthly 90th% limit is 110.0 CFU/100 mL and reported value was 784.23 CFU/100 mL at EFF-002. On 12/15/22 raw effluent that was being stored in equalization basin #1 was returned through the plant main influent channel. Staff believes the water that was being stored in equalization basin #1 was the source of the elevated Enterococci value. In response, equalization basin #1 has been drained and cleaned. Violation B eSMR
1109565 09/12/2022 DMON Samples for BOD & TSS were sent to contract lab for analysis for 09/12, 09/13, & 9/14. Alpha Labs only logged in the BOD's and not the TSS's. All three samples for TSS were run past hold time. Alpha Labs contacted us upon discovery of their mistake on Wednesday, September 28th. There was no way to resample at this point. Alpha Labs was asked to run the samples anyway, even though they were out of hold time. Alpha Labs advised their login team and audit team to "be more careful" when it comes to logging in samples. Violation U eSMR
1109566 09/12/2022 DMON Samples for BOD & TSS were sent to contract lab for analysis for 09/12, 09/13, & 9/14. Alpha Labs only logged in the BOD's and not the TSS's. All three samples for TSS were run past hold time. Alpha Labs contacted us upon discovery of their mistake on Wednesday, September 28th. There was no way to resample at this point. Alpha Labs was asked to run the samples anyway, even though they were out of hold time. Alpha Labs advised their login team and audit team to "be more careful" when it comes to logging in samples. Violation U eSMR
1095954 09/30/2021 CAT2 Zinc, Total Monthly Average limit is 58 ug/L and reported value was 59.3 ug/L at EFF-001. On 9/30/21 the Average Monthly Limit for Zinc was reported as 59.3ug/L. The district is currently conducting a Zinc study to identify potential sources of Zinc in the collection system. We are reviewing our source monitoring program and septic hauler manifests. In addition, we are purchasing and awaiting installation of new chemical feed injection pumps and piping for our Metal Solve and Zeta Floc chemical injection system. Violation U eSMR
1095955 09/13/2021 DMON For Chronic Toxicity: C. dubia - Three-Sample Median Trigger Maximum limit is 1 TUc and reported value was 4.6 TUc at EFF-001 The District continues to perform monthly accelerated monitoring while Operators continue to observe the plant closely before and during the testing time frame. The preliminary results for our October 4th testing are: C. Dubia Survival TUc < 1 TUc, Reproduction < 1 TUc. This result will bring the Three-Sample Median back to <1 TUc. Violation U eSMR
1094436 08/03/2021 DMON For Chronic Toxicity: C.dubia - (Reproduction) Single Sample Trigger Maximum limit is 2 TUc and reported value was 4.6 TUc at EFF-001. C.dubia - Three-Sample Trigger Maximum limit is 1 TUc and reported value was 4.6 TUc at EFF-001 The district performed its first monthly accelerated monitoring in August. The August 3rd testing produced the following results: C. Dubia Survival TUc < 1 TUc, Reproduction 4.6 TUc. The district will continue performing accelerated monthly monitoring while Operators will continue observing the plant closely before and during the testing time frame. The preliminary results for our September 13th testing are: C. Dubia Survival TUc < 1 TUc, Reproduction < 1 TUc. The district's TRE plan has been included in this month's attachments to the SMR. Violation U eSMR
1093623 07/12/2021 DMON Chronic Toxicity - C.dubia - Reproduction Single Sample Trigger Maximum limit is 2 TUc and reported value was 10.3 TUc at EFF-001. Chronic Toxicity - C.dubia -Survival for the same sample was < 1 TUc. The district will be performing accelerated monitoring in August and September. Operators will be monitoring the plant closely before and during that time frame. Operators will be specifically documenting influent visuals, chemical dosing and plant operation. The August 3rd repeat testing produced the following preliminary results: C. Dubia Survival TUc < 1 TUc, Reproduction 4.6 TUc. The district will continue performing accelerated monitoring and begin TRE procedures. Violation U eSMR
1092328 06/09/2021 DMON On June 9, 2021 at 01:07, the Post CL2 residual at the Sonoma Valley Treatment Plant dropped suddenly causing the plant to divert tertiary final effluent into EQ #3. During this time the Monthly Flow-Through Bioassay was in progress. The plant diverted into EQ #3 until 05:02 for a total of approximately 4 hours. During this time there was no flow to the bioassay unit. When the Operator arrived at the plant it was discovered the probe on the CL2 analyzer was fouled with debris. After cleaning the probe and re-calibrating the analyzers, discharge of tertiary final effluent was resumed to the R4 reservoir and flow to the bioassay unit was resumed. This is the first time we have experienced a fouled probe on the chlorine analyzer. The probe is checked daily. We do not anticipate this to be a reoccurring event. Violation U eSMR
1080746 09/16/2020 DMON No Total Coliform sampled September 16 through 17. Starting Sep 15th, the Sonoma Valley Treatment Plant started a planned shut down to replace the main plant generator switch gear. Unfortunately, the main plant generator failed and parts were unavailable from CATAPILLAR until September 18th. This caused various deficient monitoring events. Please see the September 2020 cover letter detailing the events surrounding this planned shutdown. Violation U eSMR
1080745 09/16/2020 DMON No Total Residual Chlorine Instantaneous Maximum was recorded September 16 through 17. Starting Sep 15th, the Sonoma Valley Treatment Plant started a planned shut down to replace the main plant generator switch gear. Unfortunately, the main plant generator failed and parts were unavailable from CATAPILLAR until September 18th. This caused various deficient monitoring events. Please see the September 2020 cover letter detailing the events surrounding this planned shutdown. Violation U eSMR
1080748 09/16/2020 DMON No pH readings for minimum and maximum were recorded September 16 through 17. Starting Sep 15th, the Sonoma Valley Treatment Plant started a planned shut down to replace the main plant generator switch gear. Unfortunately, the main plant generator failed and parts were unavailable from CATAPILLAR until September 18th. This caused various deficient monitoring events. Please see the September 2020 cover letter detailing the events surrounding this planned shutdown. Violation U eSMR
1080747 09/15/2020 DMON Daily flow readings for Effluent Flow and Peak Flow were not recorded September 15 through 17. The reported flow readings are shown as 0. All effluent flow was diverted to EQ #3. Starting Sep 15th, the Sonoma Valley Treatment Plant started a planned shut down to replace the main plant generator switch gear. Unfortunately, the main plant generator failed and parts were unavailable from CATAPILLAR until September 18th. This caused various deficient monitoring events. Please see the September 2020 cover letter detailing the events surrounding this planned shutdown. Violation U eSMR
1080744 09/15/2020 DMON Daily flow readings for Influent Flow and Peak Flow into the plant were not recorded September 15 through 17 while generator and PG&E power were unavailable. For these days, the reported influent flow readings were estimated using the average of five days prior and five days after the event. Starting Sep 15th, the Sonoma Valley Treatment Plant started a planned shut down to replace the main plant generator switch gear. Unfortunately, the main plant generator failed and parts were unavailable from CATAPILLAR until September 18th. This caused various deficient monitoring events. Please see the September 2020 cover letter detailing the events surrounding this planned shutdown. Violation U eSMR
1075047 04/12/2020 CTOX Chronic Toxicity-C.dubia-Reproduction Single Sample Maximum limit is 2 TUc and reported value was 4.6 TUc at EFF-001. The district will be performing repeat sampling in May and June. Operators will be monitoring the plant closely before and during that time frame. Operators will be specifically documenting influent visuals, chemical dosing and plant operation. The May 12th repeat testing produced the following preliminary results: C. Dubia Survival TUc <1, Reproduction TUc <1. Violation U eSMR
1068226 11/30/2019 CAT2 Zinc, Total Monthly Average limit is 58 ug/L and reported value was 61 ug/L at EFF-001. In response the district is working to identify sources of Zinc in the collection system. We are reviewing our source monitoring program, septic hauler manifests and all hauled waste requirements. In addition we are working to identify potential improvements for our chemical feed injection system of Metal Solve and Zeta Floc. The district has contacted its chemical supplier to verify the optimum dosage of Metal Solve and Zeta Floc for Zinc remediation is being utilized. Violation U eSMR
1067345 10/29/2019 DMON The Effluent sample for Enterococci analysis was received and set at Alpha Laboratories past the recommended hold time. The District could not avoid this situation as the Kincaid Fire evacuations caused county wide PSPS and numerous road delays and closures. Violation U eSMR
1067346 10/28/2019 DMON The Effluent sample sent to Alpha Laboratories for BOD analysis was prepared outside of the recommended hold time. The District could not avoid this situation as the Kincaid Fire evacuations caused county wide PSPS and numerous road delays and closures. Violation U eSMR
1067347 10/28/2019 DMON The Influent sample sent to Alpha Laboratories for BOD analysis was prepared outside of the recommended hold time. The District could not avoid this situation as the Kincaid Fire evacuations caused county wide PSPS and numerous road delays and closures. Violation U eSMR
1064558 08/12/2019 DMON The TSS samples for both INF-001 and EFF-001 were missed by the District's contract lab and had to be run outside of the recommended hold time for samples collected August 12, 2019. Alpha Analytical Laboratory representative emailed August 22, 2019 to notify the DIstrict of their mistake in missing the hold time. The District asked them to go ahead and run the sample anyway and flag the results. The District hopes this won't happen again. Violation U eSMR
1064559 08/12/2019 DMON The TSS samples for both INF-001 and EFF-001 were missed by the District's contract lab and had to be run outside of the recommended hold time for samples collected August 12, 2019. Alpha Analytical Laboratory representative emailed August 22, 2019 to notify the DIstrict of their mistake in missing the hold time. The District asked them to go ahead and run the sample anyway and flag the results. The District hopes this won't happen again. Violation U eSMR
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.
Total Violations: 20 Priority Violations: 0
*Click the "(+/-) Violation Description" link to expand and contract the violation description.
*As of 5/20/2010, the Water Board's Enforcement Policy requires that all violations be classified as 1, 2 or 3, with class 1 being the highest. Prior to this, violations were simply classified as Yes or No. If a 123 classification has been assigned to a violation that occurred before this date, that classification data will be displayed instead of the Yes/No data.

Violation Types
CAT2 = Category 2 Pollutant (Effluent Violation for Group 2 Pollutant) CTOX = Chronic Toxicity
DMON = Deficient Monitoring OEV = Other Effluent Violation

Expand/Contract Enforcement Actions
Enforcement Actions
Enf Id Enf Type Enf Order No. Effective Date Status
372496 Staff Enforcement Letter Historical
437255 Admin Civil Liability R2-2020-1022 03/12/2020 Historical
433388 Admin Civil Liability R2-2020-1012 02/04/2020 Historical
407906 Admin Civil Liability R2-2016-1024 09/28/2016 Historical
401534 Cease and Desist Order R2-2015-0032 06/10/2015 Active
401429 Admin Civil Liability R2-2015-1008 06/04/2015 Historical
378666 Admin Civil Liability R2-2011-0021 04/20/2011 Historical
378612 Admin Civil Liability R2-2011-0100 04/12/2011 Historical
378610 Notice of Violation 04/11/2011 Historical
375158 Admin Civil Liability R2-2011-0089  01/21/2011 Historical
375025 Admin Civil Liability R2-2010-0093 07/15/2010 Historical
353548 Cease and Desist Order R2-2008-0091 12/01/2008 Historical
354983 Admin Civil Liability SWB-2008-2-0025 11/19/2008 Historical
311487 Admin Civil Liability R2-2006-0013 06/14/2006 Historical
244056 Admin Civil Liability R2-2003-0014 05/21/2003 Historical
245049 Admin Civil Liability R2-2003-0001 01/16/2003 Historical
240432 Cease and Desist Order R2-2002-0044 04/01/2002 Active
241149 13267 Letter 03/13/2002 Historical
240055 Admin Civil Liability R2-2001-0020-01 10/30/2001 Historical
235611 Admin Civil Liability R2-2001-0020A 05/23/2001 Historical
227499 13267 Letter 10/29/1999 Historical
222046 Admin Civil Liability R2-1997-0126 02/18/1998 Historical
220367 Time Schedule Order 86-088 11/19/1986 Withdrawn
Total Enf Actions: 23

Expand/Contract Inspections
Inspections
Inspection ID Inspection Type Lead Inspector Actual End Date Planned Violations Attachment
52241121 B Type compliance inspection Kerry O’Connor 06/14/2023 N 0 Download
36315469 B Type compliance inspection Anna Gallagher 05/06/2019 N 0 Download
26481267 B Type compliance inspection Vince Christian 10/19/2016 N 0 Download
18361855 B Type compliance inspection Vince Christian 11/18/2014 N 0 [Attachments]
11973160 B Type compliance inspection Jake Albright 03/06/2013 N 0 Download
3174426 B Type compliance inspection Brenner Perryman 09/08/2010 N 0 Download
2111266 B Type compliance inspection Matt Oxsalida 12/07/2009 N 0 Download
1569207 B Type compliance inspection Matt Oxsalida 10/21/2008 Y 0 Download
1632790 Field Oversight Tong Yin 08/21/2008 N 0 N/A
1307756 B Type compliance inspection Mark Amendola 11/13/2007 N 0 [Attachments]
987600 B Type compliance inspection Matt Oxsalida 11/30/2006 N 0 [Attachments]
434911 B Type compliance inspection 08/04/2005 N 0 N/A
336368 B Type compliance inspection Myriam Zech 07/16/2004 Y 0 N/A
329597 Miscellaneous inspection Ray Balcom 05/09/2003 Y 0 N/A
325684 B Type compliance inspection Ray Balcom 08/08/2002 Y 0 N/A
289956 B Type compliance inspection Eddy So 01/15/2002 Y 0 N/A
289955 B Type compliance inspection Ray Balcom 01/12/2001 Y 0 N/A
289954 B Type compliance inspection Tobi Tyler 04/27/2000 Y 0 N/A
289948 B Type compliance inspection Shin-Roei Lee 03/26/1999 Y 0 N/A
289947 B Type compliance inspection Shin-Roei Lee 11/17/1998 Y 0 N/A
289950 B Type compliance inspection Shin-Roei Lee 03/10/1998 Y 0 N/A
289952 Complaint inspection Ray Balcom 01/16/1998 Y 0 N/A
289953 B Type compliance inspection Ray Balcom 10/31/1997 Y 0 N/A
289946 B Type compliance inspection Ray Balcom 08/24/1995 Y 0 N/A
289949 B Type compliance inspection Ray Balcom 12/02/1994 Y 0 N/A
289951 B Type compliance inspection Shin-Roei Lee 03/23/1994 Y 0 N/A
Total Inspections: 26 Last Inspection: 06/14/2023
  
The current report was generated with data as of: 07/19/2024
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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