Welcome to California
California Home
Welcome to California - images of Golden Gate Bridge, ocean sunset, waterfall, flowers, and city skyline California Home Welcome to the California Environmental Protection Agency
California Integrated Water Quality System Project (CIWQS)
   Party At-A-Glance Report

  
   [VIEW PRINTER FRIENDLY VERSION] [EXPORT THIS REPORT TO EXCEL]

  
  
  
  
  
General Information
Party ID Party Name Party Classification Mailing Address Work Phone Email/Website
47044 Thousand Oaks City Municipal 2100 East Thousand Oaks Boulevard Thousand Oaks, CA 91362 805-449-2400 None
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
808453 Ventura County MS4s Ventura 4 MS4 None None None
852730 R4 MS4s Los Angeles 4 MS4 None None None
886311 Unit Y2 Wastewater Interceptor Emergency Repairs Ventura 4 Dredge/Fill Site Owner 02/21/2023 None
873558 Unit Y2 Wastewater Interceptor Rehabilitation Project Ventura 4 Dredge/Fill Site Owner 04/15/2021 None
826654 Thousand Oaks City WS Ventura 4 Utility Structure Owner and Operator 07/26/2016 None
631788 Thousand Oaks Municipal Service Center Ventura 4 Collection_System Owner 04/06/2006 None
217843 City of Thousand Oaks - Arroyo Conejo @ Borchard Ventura 4 Facility Owner 02/05/2001 None
218240 Conejo Cr Ambient WQ Monitorin Ventura 4 Facility Owner 01/01/2001 None
243690 Thousand Oaks City - Mun Separate Storm Sewer, MS4 Ventura 4 MS4 Owner 07/27/2000 None
269695 Unit W & F Interceptor - II Ventura 4 Facility Owner 03/11/1999 None
269694 Unit W & F Interceptor - I Ventura 4 Facility Owner 02/03/1998 None
246693 Olsen Road WWRP Ventura 4 Facility Owner 08/31/1987 None
231693 Hill Canyon WWTP Ventura 4 Wastewater Treatment Facility Owner 10/22/1984 None
Total Related Places: 13
  
  
  
  
Expand/Contract Related Parties
Related Parties
Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification
633178 Patrick McCulloch Person Legally Responsible Official 06/09/2023 None None
633494 Bret Sherman Person Legally Responsible Official 12/27/2022 None None
304392 Santos Marquez Person Employee 03/13/2006 None None
558342 Paul Jorgensen Person Employee 07/26/2016 None None
97291 Chuck Rogers Person Employee 10/23/2015 12/01/2015 None
544470 Jay Spurgin Person Legally Responsible Official 01/01/2013 02/06/2020 None
639409 Michael Devlahovich Person Legally Responsible Official 05/23/2023 None None
140366 Donald Nelson Person Enforcement Contact 01/27/2003 None None
640365 Jaime Castaneda Person Data Submitter 07/03/2023 None None
521727 Jim Dooling Person Data Submitter 03/18/2010 01/30/2018 None
630678 Ryan Zgrabik Person Legally Responsible Official 02/03/2022 12/20/2022 None
359392 Robert Miller Person Legally Responsible Official 01/10/2007 09/16/2015 None
635206 Brandon Barrios Person Data Submitter 09/13/2022 None None
363577 John Nelson Person Legally Responsible Official 04/24/2017 02/02/2022 None
623541 Nader Heydari Person Legally Responsible Official 04/15/2021 None None
633178 Patrick McCulloch Person Data Submitter 05/17/2022 06/09/2023 None
553781 John Minkel Person Legally Responsible Official 12/01/2015 None None
633494 Bret Sherman Person Data Submitter 06/07/2022 12/27/2022 None
363582 Mike Noblitt Person Data Submitter 02/06/2007 05/04/2016 None
642227 TIMOTHY MOONEY Person Legally Responsible Official 10/24/2023 None None
640208 Jake Morris Person Data Submitter 06/26/2023 None None
61239 Mark Watkins Person Legally Responsible Official 04/04/2006 12/31/2012 None
630678 Ryan Zgrabik Person Data Submitter 01/09/2023 None None
540225 John Smallis Person Legally Responsible Official 05/31/2013 09/28/2015 None
Total Related Parties: 24
  
  
  
  
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?
442959 401 Certification 4 4WQC40121034 Historical CERFILLEXC None 10/07/2021 09/14/2023 Discharger 04/15/2021 None N
440290 Co-Permitee SB 4A560112001 Active SLIC 2020-0015-DWQ 07/09/2020 None Discharger 09/18/2020 None N
193002 Enrollee 4 4A566000392 Historical NPDNONMUNIPRCS 97-045 03/26/1998 03/10/1999 Discharger 09/01/2005 None N
193122 Enrollee 4 4A567500009 Historical NPDNONMUNIPRCS R4-2003-0111 01/29/2004 11/30/2005 Discharger 09/01/2005 None N
193016 Enrollee 4 4A566000477 Historical NPDNONMUNIPRCS 97-045 04/07/1999 05/30/2001 Discharger 09/01/2005 None N
193027 Enrollee 4 4A566000563 Historical NPDNONMUNIPRCS 97-045 02/28/2001 05/31/2002 Discharger 09/01/2005 None N
300590 Enrollee 4 4SSO10449 Active SSOMUNILRG 2022-0103-DWQ 10/30/2006 None Discharger 04/12/2006 None N
451309 Enrollee - 401 Certification 4 4WQC40123033 Historical CERFILLEXC 2018-0029-EXEC 02/28/2023 02/05/2024 Discharger 02/21/2023 None N
407943 Enrollee - NPDES 4 4DW0682 Active NPDNONMUNIPRCS 2014-0194-DWQ 06/29/2016 None Discharger 06/29/2016 None N
148594 Individual Monitoring Requirem 4 4WQTHOUSAND Historical VOLMON 4WQTHOUS 01/01/2001 01/02/2001 Discharger 01/01/2001 None N
307128 Letter 4 None Historical PTPRG Letter 07/25/2006 07/26/2006 Discharger 08/02/2006 None N
134371 NPDES Permit 4 4A560112001 Historical NPDMUNILRG 84-09810 10/22/1984 09/28/1987 Discharger 10/22/1984 None N
136140 NPDES Permit 4 4A560112002 Historical NPDMUNIOTH 97-124 09/29/1997 12/11/2002 Discharger 09/29/1997 None Y
135406 NPDES Permit 4 4A560112001 Historical NPDMUNILRG 93-016 04/05/1993 06/09/1996 Discharger 04/05/1993 None N
134257 NPDES Permit 4 4A560112001 Historical NPDMUNILRG 87-136 09/28/1987 04/05/1993 Discharger 09/28/1987 None N
133983 NPDES Permit 4 4A560112001 Historical NPDMUNILRG 84-047 05/21/1984 10/22/1984 Discharger 05/21/1984 None N
134777 NPDES Permit 4 4A560112002 Historical NPDMUNIOTH 91-068 06/03/1991 06/10/1996 Discharger 06/03/1991 None N
134192 NPDES Permit 4 4A560112002 Historical NPDMUNIOTH 80-050 09/22/1980 04/25/1983 Discharger 09/22/1980 None N
133642 NPDES Permit 4 4A560112002 Historical NPDMUNIOTH 83-023 04/25/1983 10/22/1984 Discharger 04/25/1983 None N
133457 NPDES Permit 4 4A560112002 Historical NPDMUNIOTH 78-054 05/22/1978 09/22/1980 Discharger 05/22/1978 None N
428016 NPDES Permit 4 4A560112001 Active NPDMUNILRG R4-2019-0137 01/01/2020 None Discharger 12/27/2018 None N
134372 NPDES Permit 4 4A560112002 Historical NPDMUNIOTH 84-09811 10/22/1984 06/03/1991 Discharger 10/22/1984 None N
395568 NPDES Permit 4 4A560112001 Historical NPDMUNILRG 96-044 06/10/1996 07/24/2003 Discharger 09/29/1997 None Y
136030 NPDES Permit 4 4A560112002 Historical NPDMUNIOTH 96-045 06/10/1996 09/28/1997 Discharger 06/10/1996 None N
132642 NPDES Permit 4 4A560112001 Historical NPDMUNILRG R4-2003-0083 07/25/2003 06/30/2014 Discharger 06/05/2003 None Y
395353 NPDES Permit 4 4A560112001 Historical NPDMUNILRG R4-2014-0064 07/01/2014 12/31/2019 Discharger 03/14/2014 None Y
Total Regulatory Measures: 26
  
  
  
  
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.
1150561 11/21/2025 OEV Total Coliform Daily Maximum limit is 240 MPN/100 mL and reported value was 280 Violation N eSMR Hill Canyon WWTP 428016 R4-2019-0137 N
1147677 09/20/2025 Sanitary Sewer Overflow/Spill/ Type: Category 1 Spill; Root Intrusion caused 545 gallons of sewage to spill fro Violation None SSO Thousand Oaks Municipal Service Center 300590 2022-0103-DWQ N
1148432 08/04/2025 Surface Water HCTP received a FAIL result on the bioassay sample taken on 8/4/25, 8/6/25, and Violation N eSMR Hill Canyon WWTP 428016 R4-2019-0137 N
1141583 03/15/2025 Sanitary Sewer Overflow/Spill/ Type: Category 1 Spill; Debris from Construction,Debris-General,Inappropriate Di Violation None SSO Thousand Oaks Municipal Service Center 300590 2022-0103-DWQ Y
1135964 11/08/2024 Sanitary Sewer Overflow/Spill/ Type: Category 1 Spill; Fats, Oil and Grease (FOG) caused 590 gallons of sewage Violation None SSO Thousand Oaks Municipal Service Center 300590 2022-0103-DWQ N
1133366 04/13/2024 Sanitary Sewer Overflow/Spill/ Type: Category 1 Spill; Fats, Oil and Grease (FOG), Siphon Failure caused 5200 g Violation None SSO Thousand Oaks Municipal Service Center 300590 2022-0103-DWQ N
1140149 02/29/2024 CAT1 Sulfate, Total (as SO4) Monthly Average (Mean) limit is 250.0 mg/L and reported Violation N Report Hill Canyon WWTP 428016 R4-2019-0137 N
1133365 10/24/2023 Sanitary Sewer Overflow/Spill/ Type: Category 1 Spill; Damage by Others Not Related to Collection System Constr Violation None SSO Thousand Oaks Municipal Service Center 300590 2022-0103-DWQ N
1111240 09/07/2022 Surface Water The unprecedented heat wave experienced in our area during the month of Septembe Violation N eSMR Hill Canyon WWTP 428016 R4-2019-0137 N
1108442 07/12/2022 CAT2 Chlorine, Total Residual Daily Maximum limit is 0.1 mg/L and reported value was Violation N eSMR Hill Canyon WWTP 428016 R4-2019-0137 Y
1106534 05/31/2022 CAT2 Copper, Total Monthly Average (Mean) limit is 6.0 ug/L and reported value was 6. Violation N eSMR Hill Canyon WWTP 428016 R4-2019-0137 Y
1096234 08/31/2021 CAT2 Cyanide, Total (as CN) Monthly Average limit is 4.2 ug/L and reported value was Violation N eSMR Hill Canyon WWTP 428016 R4-2019-0137 Y
1089767 02/28/2021 CAT2 Copper, Total Monthly Average limit is 6 ug/L and reported value was 9 ug/L at E Violation N eSMR Hill Canyon WWTP 428016 R4-2019-0137 Y
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: 13
*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
462281 Notice of Violation NOV NOV 08/21/2025 for Thousand Oaks City SSOMUNILRG 08/21/2025 Historical
451031 Admin Civil Liability R4-2022-0266 ACL R4-2022-0266 for Thousand Oaks City NPDMUNILRG 02/08/2023 Historical
396813 Time Schedule Order R4-2014-0065 TSO R4-2014-0065 for Thousand Oaks City NPDMUNILRG 05/08/2014 Historical
380841 Admin Civil Liability R4-2011-0134-M EPL No. R4-2011-0134-M for City of Thousand Oaks, Hill Canyon WWTP NPDMUNILRG 08/15/2011 Historical
354953 Admin Civil Liability R4-2008-0098-M Expedited Settlement Ltr sent 10/24/08 for 6 effluent limit violations. NPDMUNILRG 10/24/2008 Historical
348847 Notice of Violation NOV NOV sent 6/12/08 for 9 effluent violations of NPDES permit R4-2003-0083. NPDMUNILRG 06/12/2008 Historical
253736 Admin Civil Liability R4-2004-0036 MMPC R4-2004-0036 - City of Thousand Oaks, Hill Canyon WWTP (10/01/04) NPDMUNILRG 10/01/2004 Historical
252713 Settlement - Court Order Court Ordered Settlement Court Ordered Settlement Agreement for R4-1998-0024 Hill Canyon WWTP (05/25/04) NPDESWW 05/25/2004 Historical
251900 13267 Letter 13267 Letter Enforcement - 4A562442N01 UNREGS 03/03/2004 Historical
251899 13267 Letter 13267 Letter 13267 Letter sent 6/6/03 requests information on sewage spill. - 4A562442N01 UNREGS 06/06/2003 Historical
249755 Notice of Violation NOV NOV - City of Thousand Oaks, Hill Canyon WWTP (11/20/03) NPDMUNILRG 11/20/2003 Historical
245451 Admin Civil Liability R4-2003-0011 MMPC R4-2003-0011 City of Thousand Oaks, Arroyo Conejo@Borchard (01/08/03) NPDNONMUNIPRCS 01/08/2003 Historical
245223 Admin Civil Liability R4-1998-0024 ACLC 98-024 - City of Thousand Oaks, Hill Canyon WWTP (10/24/02) NPDESWW 05/15/1998 Superceded
245091 13267 Letter 13267 Letter Enforcement - 4A562442N01 UNREGS 01/27/2003 Historical
243158 Time Schedule Order R4-2003-0084 R4-2003-0083 as affected by CI-4917 TSO R4-2003-0084 NPDMUNILRG 06/05/2003 Historical
241211 Admin Civil Liability R4-2001-0120 ACLO R4-2001-0120 City of Thousand Oaks, Hill Canyon (03/05/02) NPDESWW 09/25/2001 Historical
239935 Notice of Violation NOV NOV City of Thousand Oaks, Arroyo Conejo@Borchard (11/09/01) NPDNONMUNIPRCS 11/09/2001 Historical
239223 Notice of Violation NOV Notice of Violation sent 10/18/01 for effluent violations. NPDNONMUNIPRCS 10/18/2001 Historical
230158 Oral Communication Staff communication Staff contacted the discharger on 12/27/99 to discuss violations. NPDMUNIOTH 12/27/1999 Historical
228436 Staff Enforcement Letter SEL SEL - City of Thousand Oaks, Hill Canyon WWTP PTPRG (09/07/99) PTPRG 09/07/1999 Historical
220487 Clean-up and Abatement Order R4-1998-0059 CAO R4-1998-0059 - City of Thousand Oaks, Hill Canyon WWTP (07/21/98) NPDESWW 07/21/1998 Historical
219076 Clean-up and Abatement Order R4-1998-0016 CAO 98-016 - City of Thousand Oaks, Hill Canyon WWTP (02/09/98) NPDESWW 02/09/1998 Historical
Total Enforcement Actions: 22
  
  
  
  
Expand/Contract Enforcement Actions
Regulatory Measures linked to Related Parties
Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status
428016 Santos Marquez NPDES Permit NPDMUNILRG 01/01/2020 Active
407943 Paul Jorgensen Enrollee - NPDES NPDNONMUNIPRCS 06/29/2016 Active
Total Regulatory Measures linked to Related Parties: 2
  
  
The current report was generated with data as of: 02/09/2026
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
Back to Main Page  |  Back to Top of Page

Conditions of Use | Privacy Policy
Copyright © 2024 State of California

The Board is one of six boards, departments, and offices under
the umbrella of the California Environmental Protection Agency.
Cal/EPA | ARB | DPR | DTSC | OEHHA | SWRCB