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   Party At-A-Glance Report

  
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General Information
Party ID Party Name Party Classification Mailing Address Work Phone Email/Website
42506 Sunnyvale City City Agency Po Box 3707 Sunnyvale, CA 94088-3707 None None
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
889838 Emergency Mockingbird Lane Outfall Repair at Stevens Creek Santa Clara 2 Dredge/Fill Site Owner 08/10/2023 None
809824 Sunnyvale Water Pollution Control Plant Primary Treatment Facility Project Santa Clara 2 Dredge/Fill Site Owner 10/09/2014 None
631044 Sunnyvale CS Santa Clara 2 Collection_System Owner 04/03/2006 None
259508 Sunnyvale Recycled Water Program Santa Clara 2 Wastewater Treatment Facility Owner 03/20/1991 None
259507 Sunnyvale WPCP Santa Clara 2 Wastewater Treatment Facility Owner 12/22/1997 None
259506 Sunnyvale Landfill Santa Clara 2 Land fill Owner 01/17/1978 None
226861 GC Maint. Yard Santa Clara 2 Facility Owner 09/27/1991 None
Total Related Places: 7
  
  
  
  
Expand/Contract Related Parties
Related Parties
Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification
647874 Xin Xu Person Data Submitter 10/29/2024 None None
643844 JULIE CHOUN Person Data Submitter 02/23/2024 None None
641001 Ramana Chinnakotla Person Legally Responsible Official 08/10/2023 None None
639813 Jaime Hernandez Person Data Submitter 06/01/2023 None None
639766 Anjelene Manzanares Person Data Submitter 06/01/2023 09/03/2024 None
633317 Rohan WIKRAMANAYAKE Person Legally Responsible Official 06/07/2022 None None
632275 Winola Cheong Person Employee 08/10/2023 None None
632275 Winola Cheong Person Legally Responsible Official 04/05/2022 None None
606560 Emma Hinojosa Person Data Submitter 02/14/2020 None None
597192 Stephen Hogg Person Legally Responsible Official 04/26/2019 None None
559260 Robert Wilson Person Legally Responsible Official 09/13/2016 None None
549242 Jerry Barajas Person Data Submitter 01/19/2017 None None
548740 Craig Mobeck Person Legally Responsible Official 10/09/2014 06/04/2019 None
547918 Mary Jeyaprakash Person Data Submitter 08/04/2014 None None
547912 Nelson Schlater Person Data Submitter 08/01/2014 11/23/2015 None
547819 Cameron Kostigen Mumper Person Data Submitter 07/28/2014 None None
544208 Mario Bautista Person Data Submitter 11/18/2013 None None
538979 Bhavani Yerrapotu Person Legally Responsible Official 06/18/2012 03/04/2019 None
538309 Alo Kauravlla Person Data Submitter 01/16/2013 None None
537641 Mansour Nasser Person Legally Responsible Official 11/16/2012 None None
532007 Jerardo Barajas Person Data Submitter 02/22/2012 None None
531785 Bryan Berdeen Person Legally Responsible Official 02/09/2012 None None
527512 Steven Schmidt Person Legally Responsible Official 06/24/2011 01/15/2013 None
527477 Regina Galicki Person Data Submitter 06/23/2011 None None
527476 Kristin Kerr Person Data Submitter 06/23/2011 None None
527475 Allen Wan Person Data Submitter 06/23/2011 None None
526403 John Stufflebean Person Legally Responsible Official 11/16/2012 06/04/2019 None
526401 Melody Tovar Person Legally Responsible Official 02/09/2012 03/29/2012 None
520377 Dan Stevenson Person Legally Responsible Official 11/02/2009 11/04/2014 None
471992 Brendan McCarthy Person Data Submitter 06/05/2008 None None
373701 Eric Tokutomi Person Data Submitter 04/12/2007 None None
373697 Tony Pineda Person Legally Responsible Official 04/12/2007 06/04/2019 None
372064 James Craig Person Legally Responsible Official 04/02/2007 06/04/2019 None
348787 John Addeo Person Employee 10/27/2006 None None
303225 Sophie James Person Employee 03/08/2006 None None
224560 Marvin Rose Person Enforcement Contact 03/01/2005 None None
224560 Marvin Rose Person Facility Contact 12/22/1997 None None
74430 Lorrie Gervin Person Legally Responsible Official 04/03/2006 01/15/2013 None
Total Related Parties: 38
  
  
  
  
Expand/Contract Regulatory Measures
Regulatory Measures (non-enforcement)
Reg. Measure ID Regulatory Measure Type Region WDID Status Program Order No. RM Effective Date RM Termination Date Relationship Relationship Start Date Relationship End Date Amended?
453886 Enrollee - WDR 2 2 CW453886 Historical CERFILLEXC 2023-0058-DWQ 09/06/2023 12/05/2023 Discharger 08/10/2023 None N
436744 NPDES Permit 2 2 438018001 Active NPDMUNILRG R2-2020-0002 04/01/2020 None Discharger 02/12/2020 None Y
430644 Co-Permitee 2 2 438018001 Active NPDMUNILRG R2-2024-0013 07/01/2019 None Discharger 05/20/2019 None N
398438 401 Certification 2 2 CW398438 Historical CERFILLEXC None 12/09/2015 05/06/2024 Discharger 10/09/2014 None N
398068 NPDES Permit 2 2 438018001 Historical NPDMUNILRG R2-2014-0035 11/01/2014 03/31/2020 Discharger 09/10/2014 None N
389157 Co-Permitee 2 2 438018001 Active NPDMUNILRG R2-2017-0041 01/01/2013 None Discharger 03/01/2008 None Y
378833 Co-Permitee 2 2 438018001 Historical NPDMUNILRG R2-2011-0012 04/01/2011 12/31/2012 Discharger 03/01/2008 None N
369896 NPDES Permit 2 2 438018001 Historical NPDMUNILRG R2-2009-0061 10/01/2009 10/31/2014 Discharger 08/20/2003 None Y
360539 Co-Permitee 2 2 438018001 Historical NPDMUNILRG R2-2007-0077 03/01/2008 12/31/2012 Discharger 03/01/2008 None N
300366 Enrollee 2 2SSO10200 Active SSOMUNILRG 2022-0103-DWQ 08/21/2006 None Discharger 04/11/2006 None N
183102 Enrollee 2 2 438404001 Historical NPDNONMUNIPRCS 96-078 09/27/1991 03/22/1999 Discharger 09/01/2005 None N
146344 WDR 2 2 438071001 Historical LNDISP 78-003 01/17/1978 06/21/1989 Discharger 01/17/1978 None Y
145568 NPDES Permit 2 2 438018001 Historical NPDMUNILRG 82-037 06/16/1982 None Discharger 06/16/1982 None Y
143309 Reclamation Requirements 2 2 438382001 Active REC R2-1994-0069 06/15/1994 None Discharger 06/15/1994 None N
142748 NPDES Permit 2 2 438018001 Historical NPDMUNILRG 93-086 07/21/1993 None Discharger 07/21/1993 None Y
142258 NPDES Permit 2 2 438018001 Historical NPDMUNILRG 98-053 06/17/1998 08/19/2003 Discharger 06/17/1998 None Y
142207 NPDES Permit 2 2 438018001 Historical NPDMUNILRG 88-176 12/21/1988 None Discharger 12/21/1988 None Y
141906 Reclamation Requirements 2 2 438382001 Historical REC 91-043 03/20/1991 06/15/1994 Discharger 03/20/1991 None N
141599 WDR 2 2 438071001 Historical LNDISP 89-105 06/21/1989 05/18/2004 Discharger 06/21/1989 None Y
132939 WDR 2 2 438071001 Active LFNONOPER R2-2004-0030 05/19/2004 None Discharger 05/19/2004 None N
132145 NPDES Permit 2 2 438018001 Historical NPDMUNILRG R2-2003-0079 08/20/2003 None Discharger 08/20/2003 None N
Total Regulatory Measures: 21
  
  
  
  
Expand/Contract Violations
Violations within the past five years
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.
1148857 09/26/2025 CAT1 Ammonia, Total (as N) Daily Maximum limit is 5 mg/L and reported value was 7.16 mg/L at EFF-001. Violation N eSMR Sunnyvale WPCP 436744 R2-2020-0002 N
1148856 09/25/2025 CAT1 Ammonia, Total (as N) Daily Maximum limit is 5 mg/L and reported value was 6.29 mg/L at EFF-001. Violation N eSMR Sunnyvale WPCP 436744 R2-2020-0002 N
1148855 09/24/2025 CAT1 Ammonia, Total (as N) Daily Maximum limit is 5 mg/L and reported value was 5.34 mg/L at EFF-001. Violation N eSMR Sunnyvale WPCP 436744 R2-2020-0002 N
1148854 09/23/2025 CAT1 Ammonia, Total (as N) Daily Maximum limit is 5 mg/L and reported value was 6.61 mg/L at EFF-001. Violation N eSMR Sunnyvale WPCP 436744 R2-2020-0002 N
1148853 09/30/2025 CAT1 Ammonia, Total (as N) Daily Maximum limit is 5 mg/L and reported value was 7.66 mg/L at EFF-001. Violation N eSMR Sunnyvale WPCP 436744 R2-2020-0002 N
1148852 09/30/2025 CAT1 Ammonia, Total (as N) Monthly Average (Mean) limit is 2 mg/L and reported value was 5.63 mg/L at EFF-001. Violation N eSMR Sunnyvale WPCP 436744 R2-2020-0002 N
1148851 09/22/2025 CAT1 Ammonia, Total (as N) Daily Maximum limit is 5 mg/L and reported value was 6.14 mg/L at EFF-001. Violation N eSMR Sunnyvale WPCP 436744 R2-2020-0002 N
1148850 09/21/2025 CAT1 Ammonia, Total (as N) Daily Maximum limit is 5 mg/L and reported value was 6.81 mg/L at EFF-001. Violation N eSMR Sunnyvale WPCP 436744 R2-2020-0002 N
1148849 09/20/2025 CAT1 Ammonia, Total (as N) Daily Maximum limit is 5 mg/L and reported value was 7.44 mg/L at EFF-001. Violation N eSMR Sunnyvale WPCP 436744 R2-2020-0002 N
1148848 09/19/2025 CAT1 Ammonia, Total (as N) Daily Maximum limit is 5 mg/L and reported value was 6.25 mg/L at EFF-001. Violation N eSMR Sunnyvale WPCP 436744 R2-2020-0002 N
1148847 09/15/2025 CAT1 Ammonia, Total (as N) Daily Maximum limit is 5 mg/L and reported value was 5.76 mg/L at EFF-001. Violation N eSMR Sunnyvale WPCP 436744 R2-2020-0002 N
1148846 09/14/2025 CAT1 Ammonia, Total (as N) Daily Maximum limit is 5 mg/L and reported value was 5.60 mg/L at EFF-001. Violation N eSMR Sunnyvale WPCP 436744 R2-2020-0002 N
1148845 09/12/2025 CAT1 Ammonia, Total (as N) Daily Maximum limit is 5 mg/L and reported value was 5.43 mg/L at EFF-001. Violation N eSMR Sunnyvale WPCP 436744 R2-2020-0002 N
1148844 09/13/2025 CAT1 Ammonia, Total (as N) Daily Maximum limit is 5 mg/L and reported value was 5.08 mg/L at EFF-001. Violation N eSMR Sunnyvale WPCP 436744 R2-2020-0002 N
1145811 06/01/2025 Unauthorized Discharge ?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. Violation None Report Sunnyvale WPCP 436744 R2-2020-0002 N
1134998 09/14/2024 OEV Turbidity Instantaneous Maximum limit is 10 NTU and reported value was 15.5 NTU at EFF-001. Violation N eSMR Sunnyvale WPCP 436744 R2-2020-0002 N
1134997 09/17/2024 OEV Turbidity Instantaneous Maximum limit is 10 NTU and reported value was 15.6 NTU at EFF-001. Violation N eSMR Sunnyvale WPCP 436744 R2-2020-0002 N
1134996 09/18/2024 OEV Turbidity Instantaneous Maximum limit is 10 NTU and reported value was 17.5 NTU at EFF-001. Violation N eSMR Sunnyvale WPCP 436744 R2-2020-0002 N
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. Violation N eSMR Sunnyvale WPCP 436744 R2-2020-0002 N
1105850 05/15/2022 OEV Turbidity Instantaneous Maximum limit is 10 NTU and reported value was 17.6 NTU. Violation N eSMR Sunnyvale WPCP 436744 R2-2020-0002 N
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. Violation N eSMR Sunnyvale WPCP 436744 R2-2020-0002 N
1103651 03/30/2022 OEV Turbidity Instantaneous Maximum limit is 10 NTU and reported value was 14.8 NTU at EFF-001. Violation N eSMR Sunnyvale WPCP 436744 R2-2020-0002 N
Report currently showing last five years of violations. Click here to return to viewing one year of violations. Refer to the Interactive Violation Report for more data.
Total Violations: 22
*Click the "(+/-) Violation Description" link to expand and contract the violation description.
  
  
  
  
Expand/Contract Enforcement Actions
Enforcement Actions
Enforcement ID Enforcement Type Enf. Order No. Title Program Effective Date Status
442885 Admin Civil Liability R2-2021-1002 ACL R2-2021-1002 for Sunnyvale City NPDMUNILRG 04/05/2021 Historical
392564 Oral Communication None Oral Com 01/15/2012 for SUNNYVALE CITY NPDMUNILRG 01/15/2012 Historical
392537 Admin Civil Liability R2-2013-1032 ACL 10/25/2013 for SUNNYVALE CITY NPDMUNILRG 10/25/2013 Historical
392528 Oral Communication None Oral Com 08/23/2012 for SUNNYVALE CITY NPDMUNILRG 08/23/2012 Historical
392527 Oral Communication None Oral Com 06/14/2013 for SUNNYVALE CITY NPDMUNILRG 06/14/2013 Historical
377471 Admin Civil Liability R2-2011-0096 ACL for Sunnyvale NPDESWW 02/04/2011 Historical
355059 Admin Civil Liability SWB-2008-2-0030 Expedited Payment Letter for SUNNYVALE CITY NPDMUNILRG 11/19/2008 Historical
256147 Admin Civil Liability R2-2004-0091 Enforcement - 2 438018001 NPDESWW 03/01/2005 Historical
242599 Admin Civil Liability R2-2003-0025 ACL R2-2003-0025 for SUNNYVALE CITY NPDMUNILRG 07/02/2003 Historical
222961 Clean-up and Abatement Order 94-092 Enforcement - 2 438300N01 UNREGS 08/17/1994 Historical
221953 Admin Civil Liability R2-2001-0085 Enforcement - 2 438018001 NPDMUNILRG 08/20/2001 Historical
221703 Clean-up and Abatement Order R2-1999-0007 Enforcement - 2 438300N01 UNREGS 03/16/1999 Historical
Total Enforcement Actions: 12
  
  
  
  
Expand/Contract Enforcement Actions
Regulatory Measures linked to Related Parties
Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status
453886 Winola Cheong Enrollee - WDR CERFILLEXC 09/06/2023 Historical
453886 Winola Cheong Enrollee - WDR CERFILLEXC 09/06/2023 Historical
369896 John Addeo NPDES Permit NPDMUNILRG 10/01/2009 Historical
132145 John Addeo NPDES Permit NPDMUNILRG 08/20/2003 Historical
Total Regulatory Measures linked to Related Parties: 4
  
  
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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