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California Integrated Water Quality System Project (CIWQS)
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Place ID 246217 		  
  
  
  
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General Information
Region Place ID Place Name Place Type Place Address Place County
2 246217 Oro Loma/Castro Valley SD WPCP Wastewater Treatment Facility 2600 Grant San Lorenzo, CA, 94580 Alameda
Expand/Contract Related Parties
Related Parties
Party Party Type Party Name Role Classification Relationship Start Date Relationship End Date
646624 Person Dan Farmer Is A Data Submitter For 08/08/2024
645526 Person Joseph Carlini Is A Data Submitter For 05/29/2024
633280 Person Natlie Lee Case Worker 04/06/2023
637216 Person Jimmy Dang Is Onsite Manager For 02/08/2023
525750 Person Gene Palop Is Onsite Manager For 08/23/2022 02/28/2024
545172 Person Manuel Ramos Talledo-Garcia Is Onsite Manager For 01/28/2021 04/06/2023
620242 Person Adrian Calderon-Flores Is Onsite Manager For 11/25/2020
542478 Person James Parrish Case Worker 08/20/2014 04/05/2023
532460 Person Rodney Smith Is Onsite Manager For 03/22/2012 02/28/2024
528925 Person Guy Moy Is A Data Submitter For 01/05/2012 01/25/2016
529487 Person Sara Burke Is A Data Submitter For 10/06/2011 01/29/2025
467421 Person Jason Warner Is Onsite Manager For 03/28/2011 05/11/2023
299760 Person Roland Williams Contact 09/21/2007 03/28/2011
364192 Person Heather Ottaway Case Worker 01/29/2007 06/15/2011
299436 Organization Castro Valley Sanitary District Owner Special District 06/20/1984
32789 Organization Oro Loma Sanitary District Owner Special District 06/20/1984
Total Related Parties: 16
Expand/Contract Regulatory Measures
Regulatory Measures
Reg Measure ID Reg Measure Type Region Program Order No. WDID Effective Date Expiration Date Status Amended?
163164 Unregulated 2 PTPRG 2 019032001 Never Active N
456854 NPDES Permit 2 NPDMUNILRG R2-2024-0006 2 019032001 06/01/2024 05/31/2029 Active N
448549 NPDES Permit 2 NPDMUNILRG R2-2022-0023 2 019123001 09/01/2022 08/31/2027 Active N
450831 Co-Permitee 2 NPDMUNILRG R2-2022-0023 2 01NPI415018 09/01/2022 08/31/2027 Active N
430628 Co-Permitee 2 NPDMUNILRG R2-2024-0013 2 019032001 07/01/2019 09/30/2029 Active N
420108 NPDES Permit 2 NPDMUNILRG R2-2018-0010 2 019032001 01/01/2019 12/31/2023 Historical Y
413161 NPDES Permit 2 NPDMUNILRG R2-2017-0016 2 019123001 07/01/2017 07/01/2022 Historical Y
415018 Co-Permitee 2 NPDMUNILRG R2-2017-0016 2 01NPI415018 07/01/2017 Historical N
416689 Co-Permitee 2 NPDMUNILRG R2-2017-0016 2 019032002 07/01/2017 Active N
389098 Co-Permitee 2 NPDMUNILRG R2-2017-0041 2 019032001 01/01/2013 12/31/2017 Active Y
388119 NPDES Permit 2 NPDMUNILRG R2-2012-0004-04 2 019032001 03/01/2012 02/28/2017 Historical N
382900 NPDES Permit 2 NPDMUNILRG R2-2012-0004 2 019123001 03/01/2012 02/28/2017 Historical Y
383588 Co-Permitee 2 NPDMUNILRG R2-2012-0004 2 019032002 03/01/2012 02/28/2017 Historical N
360502 Co-Permitee 2 NPDMUNILRG R2-2007-0077 2 019032001 03/01/2008 12/31/2012 Historical N
307632 NPDES Permit 2 NPDMUNILRG R2-2006-0053 2 019123001 10/01/2006 09/30/2011 Historical Y
307631 NPDES Permit 2 NPDMUNILRG R2-2006-0053-04 2 019032001 10/01/2006 09/30/2011 Historical N
148297 NPDES Permit 2 NPDMUNILRG R2-2000-0087-04 2 019032001 08/16/2000 08/16/2005 Historical Y
148293 NPDES Permit 2 NPDMUNILRG R2-2000-0087-01 2 019123001 08/16/2000 08/16/2005 Historical Y
143313 NPDES Permit 2 NPDMUNILRG 94-07204 2 019032001 06/15/1994 06/15/1999 Historical Y
141593 NPDES Permit 2 NPDMUNILRG 89-09804 2 019032001 06/21/1989 06/21/1994 Historical Y
145976 NPDES Permit 2 NPDMUNILRG 84-03004 2 019032001 06/20/1984 06/20/1989 Historical Y
Total Reg Measures: 21
Expand/Contract Violations
Violations
Violation ID Occurred Date Violation Type (-) Violation Description Corrective Action Status Classification Source
1118707 01/16/2023 OEV Fecal Coliform Maximum Daily (MDEL) limit is 130.0 MPN/100 mL and reported value was 261.3 MPN/100 mL at EFF-002C. Violation B Report
1118706 01/09/2023 OEV Fecal Coliform Maximum Daily (MDEL) limit is 130.0 MPN/100 mL and reported value was 2419.6 MPN/100 mL at EFF-002C. Violation B Report
1112786 12/31/2022 OEV Fecal Coliform Maximum Daily (MDEL) limit is 130 MPN/100 mL and reported value was 165 MPN/100 mL at EFF-002C. Rainfalls that resulted in the plant receiving over 100 MGD flows for over 14 hours exceeded plant design. Violation U eSMR
1112783 12/31/2022 CAT1 Carbonaceous Biochemical Oxygen Demand (CBOD) (5-day @ 20 Deg. C) Monthly Average limit is 25 ml/L and reported value was 26 ml/L at EFF-002C. Rainfalls that resulted in the plant receiving over 100 MGD flows for over 14 hours exceeded plant design. Violation U eSMR
1112784 12/31/2022 CAT1 Total Suspended Solids (TSS) Monthly Average limit is 30 mg/L and reported value was 44 mg/L at EFF-002C. Rainfalls that resulted in the plant receiving over 100 MGD flows for over 14 hours exceeded plant design. Violation B eSMR
1112787 12/31/2022 CAT2 Copper, Total Maximum Daily (MDEL) limit is 18 ug/L and reported value was 23 ug/L at EFF-002C. Rainfalls that resulted in the plant receiving over 100 MGD flows for over 14 hours exceeded plant design. Violation B eSMR
1112785 12/31/2022 CAT2 Copper, Total Monthly Average limit is 13 ug/L and reported value was 23 ug/L at EFF-002C. Rainfalls that resulted in the plant receiving over 100 MGD flows for over 14 hours exceeded plant design. Violation B eSMR
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.
Total Violations: 7 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
CAT1 = Category 1 Pollutant (Effluent Violation for Group 1 Pollutant) CAT2 = Category 2 Pollutant (Effluent Violation for Group 2 Pollutant)
OEV = Other Effluent Violation
Expand/Contract Enforcement Actions
Enforcement Actions
Enf Id Enf Type Enf Order No. Effective Date Status
455266 Admin Civil Liability R2-2024-1017 03/05/2024 Historical
245893 Time Schedule Order R2-2003-0006 01/22/2003 Active
Total Enf Actions: 2
Expand/Contract Inspections
Inspections
Inspection ID Inspection Type Lead Inspector Actual End Date Planned Violations Attachment
714074 A Type compliance inspection Matt Oxsalida N 0 Download
59726713 B Type compliance inspection Natlie Lee 05/06/2025 Y 0 Download
59726712 B Type compliance inspection Natlie Lee 05/06/2025 Y 0 Download
52058669 B Type compliance inspection Natlie Lee 06/05/2023 Y 0 Download
52005040 B Type compliance inspection Natlie Lee 06/05/2023 Y 0 Download
44083477 B Type compliance inspection James Parrish 06/03/2021 Y 0 [Attachments]
31912916 B Type compliance inspection James Parrish 03/29/2018 Y 0 Download
45514542 Preatment Audit Jennifer Ferrando 04/18/2017 N 0 [Attachments]
24505072 B Type compliance inspection James Parrish 05/16/2016 Y 0 Download
45514541 Pretreatment compliance Chuck Durham 03/16/2015 N 0 [Attachments]
11096139 B Type compliance inspection Craig Blett 11/08/2012 N 0 Download
5720625 Pretreatment compliance I-Hsin Lee 12/16/2010 N 0 Download
3397489 B Type compliance inspection Luz Slauter 10/14/2010 N 0 Download
2115064 B Type compliance inspection Mark Amendola 12/07/2009 N 0 Download
1634349 B Type compliance inspection Matt Oxsalida 01/28/2009 N 0 Download
337440 Preatment Audit Michael Chee 12/09/2004 Y 0 N/A
331854 Pretreatment compliance Michael Chee 10/17/2003 Y 0 N/A
331936 B Type compliance inspection Ray Balcom 10/03/2003 Y 0 N/A
327853 Pretreatment compliance Michael Chee 10/07/2002 Y 0 N/A
325691 B Type compliance inspection Ray Balcom 08/13/2002 Y 0 N/A
291401 B Type compliance inspection Ray Balcom 01/25/2002 Y 0 N/A
290822 Pretreatment compliance Michael Chee 10/02/2001 Y 0 N/A
291402 A Type compliance inspection Ray Balcom 06/20/2001 Y 0 N/A
291400 A Type compliance inspection Ray Balcom 11/23/1999 Y 0 N/A
291406 B Type compliance inspection Vijay Patel 08/27/1998 Y 0 N/A
291403 B Type compliance inspection Vijay Patel 01/15/1998 Y 0 N/A
291425 B Type compliance inspection Ray Balcom 08/27/1997 Y 0 N/A
291428 B Type compliance inspection Ray Balcom 10/25/1996 Y 0 N/A
291426 B Type compliance inspection Ray Balcom 10/15/1996 Y 0 N/A
291427 B Type compliance inspection Ray Balcom 08/19/1996 Y 0 N/A
291405 B Type compliance inspection Ray Balcom 09/25/1995 Y 0 N/A
291407 B Type compliance inspection Ray Balcom 08/02/1995 Y 0 N/A
291408 B Type compliance inspection Ray Balcom 10/21/1994 Y 0 N/A
291404 A Type compliance inspection Vijay Patel 12/21/1993 Y 0 N/A
Total Inspections: 34 Last Inspection: 05/06/2025
  
The current report was generated with data as of: 10/31/2025
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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