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Place ID 271781 		  
  
  
  
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General Information
Region Place ID Place Name Place Type Place Address Place County
5S 271781 City of Lathrop Consolidated Treatment Facility Wastewater Treatment Facility 18800 Christopher Lathrop, CA, 95330 San Joaquin
Expand/Contract Related Parties
Related Parties
Party Party Type Party Name Role Classification Relationship Start Date Relationship End Date
641583 Person Jonah Sonner Is A Data Submitter For 09/28/2023
634465 Person Cyle Moon Is A Data Submitter For 07/20/2022
498390 Person Gregory Gibson Is A Data Submitter For 06/15/2022
545167 Person Michael King Is Onsite Manager For 06/09/2022
545167 Person Michael King Contact 12/13/2021
488557 Person Paul Zolfarelli Contact 12/13/2021
498386 Person Stephen Salvatore Contact 04/21/2016 03/24/2021
545974 Organization Veolia North America Operator Privately-Owned Business 02/05/2015
522969 Person Joseph Reyes Contact 04/01/2014 03/24/2021
25593 Organization Lathrop City Owner City Agency 09/22/2006
8682 Organization Lathrop City/Califia LLC Owner Privately-Owned Business 07/07/2004 09/21/2006
Total Related Parties: 11
Expand/Contract Regulatory Measures
Regulatory Measures
Reg Measure ID Reg Measure Type Region Program Order No. WDID Effective Date Expiration Date Status Amended?
445985 NPDES Permit 5S NPDMUNILRG R5-2022-0004 5B39NP00085 04/01/2022 03/31/2027 Active N
440476 Co-Permitee SB SLIC 2020-0015-DWQ 5B391076001 07/09/2020 Active N
438719 Enrollee - WDR 5S REC 2016-0068-DDW 5B39NC00300 06/09/2020 08/05/2026 Active N
395597 WDR 5S WDRMUNILRG R5-2016-0028-02 5B391076001 04/21/2016 04/21/2026 Historical Y
395536 WDR 5S WDRMUNILRG R5-2015-0006 5B39NC00042 02/05/2015 02/05/2025 Historical N
329059 WDR 5S WDRMUNILRG R5-2006-0094 5B39NC00042 09/22/2006 03/17/2015 Historical N
133318 WDR 5S WDRMUNILRG 05-045 5B39NC00042 03/17/2005 03/17/2015 Historical N
Total Reg Measures: 7
Expand/Contract Violations
Violations
Violation ID Occurred Date Violation Type (-) Violation Description Corrective Action Status Classification Source
1129071 05/23/2024 CAT2 Chlorine, Total Residual 1-Hour Average (Mean) limit is 0.019 mg/L and reported value was 0.57 mg/L at EFF-001. The closed SBS dosing valve was reopened upon discovery. Additionally, the causes of this violation have been discussed with CTF operations staff and staff have been trained on proper protocol for SBS dosing and valve controls. Violation B eSMR
1126624 03/31/2024 OEV pH Instantaneous Minimum limit is 6.5 SU and reported value was 6.3 SU at EFF-001. The setpoint error was corrected upon discovery and has been correctly set to 6.5 SU. Violation B eSMR
1126621 03/28/2024 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.1 SU at EFF-002. The City is evaluating ways to operate the cooling ponds in the immediate future to prevent these violations. Violation B eSMR
1126616 03/27/2024 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.3 SU at EFF-002. The City is evaluating ways to operate the cooling ponds in the immediate future to prevent these violations. Violation B eSMR
1126617 03/26/2024 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.3 SU at EFF-002. The City is evaluating ways to operate the cooling ponds in the immediate future to prevent these violations. Violation B eSMR
1126615 03/25/2024 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.3 SU at EFF-002. The City is evaluating ways to operate the cooling ponds in the immediate future to prevent these violations. Violation B eSMR
1126613 03/22/2024 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.3 SU at EFF-002. The City is evaluating ways to operate the cooling ponds in the immediate future to prevent these violations. Violation B eSMR
1126614 03/21/2024 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.3 SU at EFF-002. The City is evaluating ways to operate the cooling ponds in the immediate future to prevent these violations. Violation B eSMR
1126606 03/20/2024 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.3 SU at EFF-002. The City is evaluating ways to operate the cooling ponds in the immediate future to prevent these violations. Violation B eSMR
1126620 03/14/2024 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.1 SU at EFF-002. The City is evaluating ways to operate the cooling ponds in the immediate future to prevent these violations. Violation B eSMR
1126619 03/13/2024 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.2 SU at EFF-002. The City is evaluating ways to operate the cooling ponds in the immediate future to prevent these violations. Violation B eSMR
1126623 03/12/2024 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.3 SU at EFF-002. The City is evaluating ways to operate the cooling ponds in the immediate future to prevent these violations. Violation B eSMR
1126622 03/11/2024 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.4 SU at EFF-002. The City is evaluating ways to operate the cooling ponds in the immediate future to prevent these violations. Violation B eSMR
1126618 03/08/2024 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.6 SU at EFF-002. The City is evaluating ways to operate the cooling ponds in the immediate future to prevent these violations. Violation B eSMR
1126612 03/07/2024 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.6 SU at EFF-002. The City is evaluating ways to operate the cooling ponds in the immediate future to prevent these violations. Violation B eSMR
1126625 03/06/2024 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.6 SU at EFF-002. The City is evaluating ways to operate the cooling ponds in the immediate future to prevent these violations. Violation B eSMR
1126609 03/05/2024 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.6 SU at EFF-002. The City is evaluating ways to operate the cooling ponds in the immediate future to prevent these violations. Violation B eSMR
1126611 03/04/2024 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.7 SU at EFF-002. The City is evaluating ways to operate the cooling ponds in the immediate future to prevent these violations. Violation B eSMR
1126608 03/01/2024 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.6 SU at EFF-002. The City is evaluating ways to operate the cooling ponds in the immediate future to prevent these violations. Violation B eSMR
1126610 03/01/2024 CAT2 Chlorine, Total Residual 1-Hour Average (Mean) limit is 0.019 mg/L and reported value was 0.038 mg/L at EFF-001. The City regrets this violation having occurred and has implemented additional SCADA controls and operations staff training to prevent this from happening in the future. Violation B eSMR
1126607 03/01/2024 CAT2 Chlorine, Total Residual 1-Hour Average (Mean) limit is 0.019 mg/L and reported value was 0.197 mg/L at EFF-001. The City regrets this violation having occurred and has implemented additional SCADA controls and operations staff training to prevent this from happening in the future. Violation B eSMR
1125418 02/29/2024 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.6 SU at EFF-002. The City is evaluating ways to operate the cooling ponds in the immediate future to prevent these violations. Violation B eSMR
1125420 02/28/2024 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.4 SU at EFF-002. The City is evaluating ways to operate the cooling ponds in the immediate future to prevent these violations. Violation B eSMR
1125427 02/27/2024 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.1 SU at EFF-002. The City is evaluating ways to operate the cooling ponds in the immediate future to prevent these violations. Violation B eSMR
1125417 02/26/2024 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.3 SU at EFF-002. The City is evaluating ways to operate the cooling ponds in the immediate future to prevent these violations. Violation B eSMR
1125425 02/23/2024 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.7 SU at EFF-002. The City is evaluating ways to operate the cooling ponds in the immediate future to prevent these violations. Violation B eSMR
1125423 02/22/2024 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.6 SU at EFF-002. The City is evaluating ways to operate the cooling ponds in the immediate future to prevent these violations. Violation B eSMR
1125426 02/21/2024 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.6 SU at EFF-002. The City is evaluating ways to operate the cooling ponds in the immediate future to prevent these violations. Violation B eSMR
1125422 02/20/2024 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.8 SU at EFF-002. The City is evaluating ways to operate the cooling ponds in the immediate future to prevent these violations. Violation B eSMR
1125419 02/19/2024 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.9 SU at EFF-002. The City is evaluating ways to operate the cooling ponds in the immediate future to prevent these violations. Violation B eSMR
1125416 02/04/2024 CAT2 Chlorine, Total Residual 1-Hour Average (Mean) limit is 0.019 mg/L and reported value was 0.041 mg/L at EFF-001. The City regrets this violation having occurred and has implemented additional SCADA controls and operations staff training to prevent this from happening in the future. Violation B eSMR
1122936 11/13/2023 Order Conditions Filter effluent turbidity exceeded 0.2 NTU for 6% of the 24-hour period on 11/13, violating the recycling specifications. On November 14, it was discovered that one of the modules in MBR Train 1 caused the exceedance and this module was taken out of operation. This module remains out of operation until additional repairs can be made. Effluent turbidity did not exceed the Recycling Specifications for the remainder of the reporting period after these actions. Despite these turbidity challenges, the CTF continued to achieve adequate disinfection, with effluent total coliform measuring <1.8 MPN/100mL on November 13, 2023. Violation B eSMR
1121482 09/14/2023 Order Conditions Filter effluent turbidity exceeded 0.2 NTU for 7% of the 24-hour period on 9/14, violating the recycling specifications. Operational controls at the Consolidated Treatment Facility cause the plant to automatically divert Membrane Bioreactor (MBR) effluent to the Emergency Storage Basin if the turbidity Recycling Specifications are not met. However, during preparation of the August 2023 eSMR, it was discovered that these operational controls had temporarily been disabled for scheduled operational testing at the Consolidated Treatment Facility in ongoing efforts to prepare it for discharging to the San Joaquin River. Though the controls were re-enabled once this discovery was made, it was later discovered that PLC/SCADA programming was needed to fully rectify the turbidity exceedances. This programming issue was resolved on October 12, 2023, and the controls have since been re-enabled. Review of operational data since resolution of the programming issue indicates that these controls are currently functioning as intended. Despite these turbidity challenges, the Consolidated Treatment Facility continued to achieve adequate disinfection, with effluent Total Coliform measuring <1.8 MPN/100mL on September 14th, 2023. Violation B eSMR
1121483 09/13/2023 Order Conditions Filter effluent turbidity exceeded 0.2 NTU for 9% of the 24-hour period on 9/13, violating the recycling specifications. Operational controls at the Consolidated Treatment Facility cause the plant to automatically divert Membrane Bioreactor (MBR) effluent to the Emergency Storage Basin if the turbidity Recycling Specifications are not met. However, during preparation of the August 2023 eSMR, it was discovered that these operational controls had temporarily been disabled for scheduled operational testing at the Consolidated Treatment Facility in ongoing efforts to prepare it for discharging to the San Joaquin River. Though the controls were re-enabled once this discovery was made, it was later discovered that PLC/SCADA programming was needed to fully rectify the turbidity exceedances. The programming issue was resolved on October 12, 2023, and the controls have since been re-enabled. Review of operational data since resolution of the programming issue indicates that these controls are currently functioning as intended. Despite these turbidity challenges, the Consolidated Treatment Facility continued to achieve adequate disinfection, with effluent Total Coliform measuring <1.8 MPN/100mL on September 13, 2023. Violation B eSMR
1120672 08/27/2023 Order Conditions Filter effluent turbidity exceeded 0.2 NTU for 25% of the 24-hour period on 8/27, violating the recycling specifications. Operational controls at the Consolidated Treatment Facility cause the plant to automatically divert MBR effluent to the Emergency Storage Basin if the turbidity Recycling Specifications are not met. However, it was discovered that these operational controls had been temporarily disabled for scheduled operational testing at the Consolidated Treatment Facility in ongoing efforts to prepare it for discharging to the San Joaquin River. These controls have since been re-enabled. Despite these turbidity challenges, the Consolidated Treatment Facility continued to achieve adequate disinfection, with effluent Total Coliform measuring <1.8 MPN/100mL on August 27, 2023. Violation B eSMR
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.
Total Violations: 35 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) Order Conditions = Order Conditions
OEV = Other Effluent Violation
Expand/Contract Enforcement Actions
Enforcement Actions
Enf Id Enf Type Enf Order No. Effective Date Status
458011 Notice of Violation null 08/09/2024 Historical
457148 Notice of Violation null 06/03/2024 Historical
455909 Notice of Violation null 02/23/2024 Historical
455107 Notice of Violation null 11/28/2023 Historical
Total Enf Actions: 4
Expand/Contract Inspections
Inspections
Inspection ID Inspection Type Lead Inspector Actual End Date Planned Violations Attachment
55470073 B Type compliance inspection Jon Rohrbough 04/23/2024 Y 0 [Attachments]
45482534 Pretreatment compliance Mohammad Farhad 07/14/2021 N 0 Download
38238716 Prerequirement inspection Dina Calanchini 10/10/2019 N 0 N/A
36430604 Prerequirement inspection Dina Calanchini 05/17/2019 N 0 [Attachments]
33378663 Miscellaneous inspection Brendan Kenny 07/27/2018 N 0 N/A
15311633 B Type compliance inspection Brendan Kenny 01/22/2014 N 0 N/A
2063176 Miscellaneous inspection Brendan Kenny 02/02/2010 N 0 N/A
Total Inspections: 7 Last Inspection: 04/23/2024
  
The current report was generated with data as of: 11/29/2024
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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