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California Integrated Water Quality System Project (CIWQS)
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Place ID 259507 		  
  
  
  
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General Information
Region Place ID Place Name Place Type Place Address Place County
2 259507 Sunnyvale WPCP Wastewater Treatment Facility 1444 Borregas Sunnyvale, CA, 94089 Santa Clara
Expand/Contract Related Parties
Related Parties
Party Party Type Party Name Role Classification Relationship Start Date Relationship End Date
632275 Person Winola Cheong Is Onsite Manager For 01/14/2025 08/06/2025
647874 Person Xin Xu Is A Data Submitter For 10/29/2024
643844 Person JULIE CHOUN Is A Data Submitter For 02/23/2024
633317 Person Rohan WIKRAMANAYAKE Is Onsite Manager For 06/07/2022
606560 Person Emma Hinojosa Is A Data Submitter For 02/14/2020
597192 Person Stephen Hogg Is Onsite Manager For 04/26/2019 08/01/2021
553657 Person William Burrell Case Worker 01/12/2017
547918 Person Mary A Jeyaprakash Is A Data Submitter For 08/04/2014 07/26/2018
547912 Person Nelson Schlater Is A Data Submitter For 08/01/2014 11/23/2015
547819 Person Cameron Kostigen Mumper Is A Data Submitter For 07/28/2014 02/23/2024
544208 Person Mario B Bautista Is A Data Submitter For 11/18/2013 03/28/2022
538309 Person Alo Reddy Kauravlla Is A Data Submitter For 01/16/2013 10/29/2024
538979 Person Bhavani Yerrapotu Is Onsite Manager For 06/18/2012 03/04/2019
526401 Person Melody Tovar Is Onsite Manager For 02/09/2012
531785 Person Bryan Berdeen Is Onsite Manager For 02/09/2012 07/26/2024
529972 Person Marcia Liao Case Worker 01/01/2012 07/31/2016
74430 Person Lorrie Gervin Is Onsite Manager For 06/24/2011 01/15/2013
527512 Person Steven Schmidt Is Onsite Manager For 06/24/2011 01/15/2013
527476 Person Kristin Kerr Is A Data Submitter For 06/23/2011
527475 Person Allen Wan Is A Data Submitter For 06/23/2011
527477 Person Regina Galicki Is A Data Submitter For 06/23/2011 01/16/2013
74430 Person Lorrie Gervin Contact 10/31/2008
224560 Person Marvin Rose Contact 06/17/2005
42506 Organization Sunnyvale City Owner City Agency 12/22/1997
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?
162485 Unregulated 2 PTPRG 2 438018001 Never Active N
436744 NPDES Permit 2 NPDMUNILRG R2-2020-0002 2 438018001 04/01/2020 03/31/2025 Active Y
430644 Co-Permitee 2 NPDMUNILRG R2-2024-0013 2 438018001 07/01/2019 09/30/2029 Active N
398068 NPDES Permit 2 NPDMUNILRG R2-2014-0035 2 438018001 11/01/2014 10/31/2019 Historical N
389157 Co-Permitee 2 NPDMUNILRG R2-2017-0041 2 438018001 01/01/2013 12/31/2017 Active Y
378833 Co-Permitee 2 NPDMUNILRG R2-2011-0012 2 438018001 04/01/2011 12/31/2012 Historical N
369896 NPDES Permit 2 NPDMUNILRG R2-2009-0061 2 438018001 10/01/2009 09/30/2014 Historical Y
360539 Co-Permitee 2 NPDMUNILRG R2-2007-0077 2 438018001 03/01/2008 12/31/2012 Historical N
132145 NPDES Permit 2 NPDMUNILRG R2-2003-0079 2 438018001 08/20/2003 09/30/2009 Historical N
142258 NPDES Permit 2 NPDMUNILRG 98-053 2 438018001 06/17/1998 06/17/2003 Historical Y
143309 Reclamation Requirements 2 REC R2-1994-0069 2 438382001 06/15/1994 06/15/2009 Active N
142748 NPDES Permit 2 NPDMUNILRG 93-086 2 438018001 07/21/1993 07/21/1998 Historical Y
142207 NPDES Permit 2 NPDMUNILRG 88-176 2 438018001 12/21/1988 12/21/1991 Historical Y
145568 NPDES Permit 2 NPDMUNILRG 82-037 2 438018001 06/16/1982 06/16/1987 Historical Y
Total Reg Measures: 14
Expand/Contract Violations
Violations
Violation ID Occurred Date Violation Type (-) Violation Description Corrective Action Status Classification Source
1145811 06/01/2025 UAUTHDISC •On June 1, 2025, an incident occurred in which float material from the Dissolved Air Floatation Tanks (DAFTS) that was on route to the ponds via the Primary Effluent Line, spilled into the Fish and Wildlife Service (FWS) Channel. Typically, primary effluent goes with the float to the ponds and keeps things moving. During this incident the primary effluent was diverted to a different line as well as the float. However, only the float was returned to the Primary Effluent Line initially. With only the float in the line it began to back up in the Primary Effluent Line until it overflowed. OES was notified within the 2 Hour limit. Vactor trucks were called onto the scene to vacuum up the spilled float. DO and pH samples were taken for the remainder of June and the results stayed within the expected range. Violation B Report
1134995 09/30/2024 CAT1 Ammonia, Total (as N) Monthly Average limit is 2 mg/L and reported value was 2.72 mg/L at EFF-001. See cover letter Violation U eSMR
1134996 09/18/2024 OEV Turbidity Instantaneous Maximum limit is 10 NTU and reported value was 17.5 NTU at EFF-001. See cover letter Violation B eSMR
1134997 09/17/2024 OEV Turbidity Instantaneous Maximum limit is 10 NTU and reported value was 15.6 NTU at EFF-001. See cover letter Violation U eSMR
1134998 09/14/2024 OEV Turbidity Instantaneous Maximum limit is 10 NTU and reported value was 15.5 NTU at EFF-001. See cover letter Violation U eSMR
1105850 05/15/2022 OEV Turbidity Instantaneous Maximum limit is 10 NTU and reported value was 17.6 NTU. See cover letter Violation U eSMR
1105849 05/12/2022 CAT1 Total Suspended Solids (TSS) Daily Maximum limit is 30 mg/L and reported value was 33 mg/L at EFF-001. See cover letter Violation U eSMR
1103651 03/30/2022 OEV Turbidity Instantaneous Maximum limit is 10 NTU and reported value was 14.8 NTU at EFF-001. Please refer to SMR Cover Letter for Corrective Actions Violation U eSMR
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.
Total Violations: 8 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) OEV = Other Effluent Violation
UAUTHDISC = Unauthorized Discharge
Expand/Contract Enforcement Actions
Enforcement Actions
Enf Id Enf Type Enf Order No. Effective Date Status
442885 Admin Civil Liability R2-2021-1002 04/05/2021 Historical
392537 Admin Civil Liability R2-2013-1032 10/25/2013 Historical
392527 Oral Communication 06/14/2013 Historical
392528 Oral Communication 08/23/2012 Historical
392564 Oral Communication 01/15/2012 Historical
382404 Expedited Payment Letter 12/13/2011 Never Active
377471 Admin Civil Liability R2-2011-0096 02/04/2011 Historical
355059 Admin Civil Liability SWB-2008-2-0030 11/19/2008 Historical
256147 Admin Civil Liability R2-2004-0091 03/01/2005 Historical
242599 Admin Civil Liability R2-2003-0025 07/02/2003 Historical
221953 Admin Civil Liability R2-2001-0085 08/20/2001 Historical
Total Enf Actions: 11
Expand/Contract Inspections
Inspections
Inspection ID Inspection Type Lead Inspector Actual End Date Planned Violations Attachment
719059 A Type compliance inspection Kelly Jacques N 0 [Attachments]
60463670 B Type compliance inspection William Burrell 06/27/2025 Y 0 N/A
52105675 B Type compliance inspection William Burrell 06/27/2023 Y 0 Download
42314046 Preatment Audit Chuck Durham 08/17/2020 N 0 Download
36660414 B Type compliance inspection William Burrell 06/21/2019 Y 0 [Attachments]
29037624 B Type compliance inspection William Burrell 06/23/2017 N 0 [Attachments]
19676583 B Type compliance inspection Marcia Liao 03/02/2015 N 0 [Attachments]
11969299 B Type compliance inspection Danny O'Connell 11/28/2012 N 0 Download
3174428 B Type compliance inspection Luz Slauter 09/09/2010 N 0 Download
1965489 B Type compliance inspection Luz Slauter 09/15/2009 N 0 Download
1575233 B Type compliance inspection Carole Leong (Multiple) 10/21/2008 Y 0 Download
1307764 B Type compliance inspection Mark Amendola 11/15/2007 N 0 [Attachments]
987592 B Type compliance inspection Tim Havey 12/05/2006 N 0 [Attachments]
455671 B Type compliance inspection 12/14/2005 N 0 N/A
336680 B Type compliance inspection Myriam Zech 11/17/2004 Y 0 N/A
435340 B Type compliance inspection 11/17/2004 N 0 N/A
335048 Pretreatment compliance Sue Ma 05/10/2004 Y 0 N/A
332486 B Type compliance inspection Ray Balcom 12/04/2003 Y 0 N/A
325865 B Type compliance inspection Ray Balcom 09/06/2002 Y 0 N/A
290845 Preatment Audit Sue Ma 05/30/2002 Y 0 N/A
290152 B Type compliance inspection Ray Balcom 03/03/2002 Y 0 N/A
290153 B Type compliance inspection Ray Balcom 11/19/1999 Y 0 N/A
290154 B Type compliance inspection Will Bruhns 04/27/1999 Y 0 N/A
290155 B Type compliance inspection Will Bruhns 03/27/1998 Y 0 N/A
290156 A Type compliance inspection Ray Balcom 11/29/1996 Y 0 N/A
290159 B Type compliance inspection Ray Balcom 07/28/1995 Y 0 N/A
290158 B Type compliance inspection Will Bruhns 10/07/1994 Y 0 N/A
290157 A Type compliance inspection Will Bruhns 01/06/1994 Y 0 N/A
Total Inspections: 28 Last Inspection: 06/27/2025
  
The current report was generated with data as of: 10/21/2025
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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