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General Information
Party ID Party Name Party Classification Mailing Address Work Phone Email/Website
26657 Las Virgenes MWD Special District 4232 Las Virgenes Road Calabasas, CA 91302 818-251-2100 None
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
848780 Las Virgenes MWD WS Los Angeles 4 Utility Structure Owner and Operator 07/05/2018 None
813919 Westlake Well Nos. 1 & 2 Los Angeles 4 Utility Structure Owner and Operator 03/17/2015 None
631822 Las Virgenes MWD CS Los Angeles 4 Collection_System Owner 04/06/2006 None
266940 Tapia WRF Los Angeles 4 Wastewater Treatment Facility Owner 11/20/1980 None
253766 Rancho Las Virgenes Farm Los Angeles 4 Wastewater Treatment Facility Owner 06/25/1979 None
Total Related Places: 5
  
  
  
  
Expand/Contract Related Parties
Related Parties
Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification
630352 Brett Dingman Person Legally Responsible Official 01/14/2022 None None
630351 John Zhao Person Legally Responsible Official 08/22/2022 None None
630351 John Zhao Person Employee 01/14/2022 None None
621126 Sara Williams Person Data Submitter 01/05/2021 None None
603930 KOURTNEY HAYNIE Person Data Submitter 11/06/2019 None None
603930 KOURTNEY HAYNIE Person Data Submitter 03/14/2023 None None
563113 Veronica Hurtado Person Data Submitter 03/29/2017 12/21/2022 None
563113 Veronica Hurtado Person Legally Responsible Official 12/21/2022 None None
563113 Veronica Hurtado Person Data Submitter 03/28/2017 01/13/2023 None
563113 Veronica Hurtado Person Data Submitter 11/08/2017 12/21/2022 None
563113 Veronica Hurtado Person Data Submitter 11/20/2017 12/21/2022 None
539597 David Pedersen Person Legally Responsible Official 12/28/2012 None None
538790 Karen Norman Person Data Submitter 12/14/2023 None None
538790 Karen Norman Person Data Submitter 02/19/2013 None None
525407 Brett Dingman Person Legally Responsible Official 04/28/2016 02/16/2023 None
331449 Edgar Cuaresma Person Facility Contact 06/25/1979 None None
331449 Edgar Cuaresma Person Data Submitter 07/05/2006 08/13/2015 None
331444 David Lippman Person Legally Responsible Official 02/11/2014 05/20/2019 None
331292 Scott McClintock Person Data Submitter 07/03/2006 02/16/2023 None
304391 Brad Glassman Person Data Submitter 03/13/2006 None None
139805 James Colbaugh Person Enforcement Contact 10/27/2003 None None
139805 James Colbaugh Person Enforcement Contact 10/02/2001 None None
139805 James Colbaugh Person Enforcement Contact 06/06/2003 None None
139805 James Colbaugh Person Enforcement Contact 11/25/1998 None None
139805 James Colbaugh Person Enforcement Contact 10/12/2003 None None
139805 James Colbaugh Person Enforcement Contact 03/18/2005 None None
139805 James Colbaugh Person Enforcement Contact 10/08/1998 None None
139805 James Colbaugh Person Enforcement Contact 08/26/2003 None None
96681 Carlos Reyes Person Data Submitter 02/27/2008 None None
71489 John Mundy Person Legally Responsible Official 04/06/2006 12/28/2012 None
Total Related Parties: 30
  
  
  
  
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?
440297 Co-Permitee SB 4B190104001 Active SLIC 2020-0015-DWQ 07/09/2020 None Discharger 09/18/2020 None N
422439 Enrollee - NPDES 4 4DW0600 Active NPDNONMUNIPRCS 2014-0194-DWQ 07/01/2018 None Discharger 07/05/2018 None N
413302 NPDES Permit 4 4B190104001 Active NPDMUNILRG R4-2017-0124 08/01/2017 None Discharger 05/22/2017 None N
389828 13267 Letter (Non-Enforcement) 4 4B190104001 Historical NPDMUNILRG R4-2010-0165 02/11/2013 02/12/2013 Discharger 04/10/2013 None N
376254 NPDES Permit 4 4B190104001 Historical NPDMUNILRG R4-2010-0165 10/22/2010 07/31/2017 Discharger 11/03/1997 None Y
300623 Enrollee 4 4SSO10460 Active SSOMUNISML 2022-0103-DWQ 08/17/2006 None Discharger 04/12/2006 None N
297427 NPDES Permit 4 4B190104001 Historical NPDMUNILRG R4-2005-0074 12/23/2005 10/21/2010 Discharger 11/03/1997 None N
260809 Letter 4 None Historical WDR 2 07/13/2001 07/14/2001 Discharger 07/13/2001 None N
260580 Letter 4 None Historical WDR 1 01/31/2001 02/01/2001 Discharger 01/31/2001 None N
260565 Letter 4 None Historical WDR 1 01/31/2001 02/01/2001 Discharger 01/31/2001 None N
193256 Enrollee - NPDES 4 4B196000037 Active NPDNONMUNIPRCS R4-2013-0095 03/31/1992 None Discharger 09/01/2005 None N
136893 NPDES Permit 4 4B190104004 Historical NPDMUNILRG 99-066 07/08/1999 11/03/2005 Discharger 07/08/1999 None Y
136386 NPDES Permit 4 4B190104001 Historical NPDMUNILRG 97-135 11/03/1997 12/22/2005 Discharger 11/03/1997 None Y
136159 NPDES Permit 4 4B190104001 Historical NPDMUNILRG 89-076 07/24/1989 11/03/1997 Discharger 07/24/1989 None N
135049 Reclamation Requirements 4 4B191023001 Active REC 94-055 06/13/1994 None Discharger 06/13/1994 None N
134140 NPDES Permit 4 4B190104001 Historical NPDMUNILRG 80-01905 11/20/1980 09/17/1984 Discharger 11/20/1980 None N
133995 NPDES Permit 4 4B190104001 Historical NPDMUNILRG 84-074 09/17/1984 07/24/1989 Discharger 09/17/1984 None N
133878 Reclamation Requirements 4 4B190104003 Active REC 87-086 06/22/1987 None Discharger 06/22/1987 None Y
133745 WDR 4 4B190310002 Active WDRMUNIENROTH 79-107 06/25/1979 None Discharger 06/25/1979 None N
133552 Reclamation Requirements 4 4B191023001 Historical REC 86-097 11/24/1986 06/13/1994 Discharger 11/24/1986 None N
133434 Reclamation Requirements 4 4B190104003 Historical REC 77-054 02/28/1977 06/22/1987 Discharger 02/28/1977 None N
133242 Reclamation Requirements 4 4B190104003 Historical REC 76-126 08/23/1976 02/28/1977 Discharger 08/23/1976 None N
133238 Reclamation Requirements 4 4B190104003 Historical REC 76-064 04/26/1976 08/23/1976 Discharger 04/26/1976 None N
133182 Reclamation Requirements 4 4B190104003 Historical REC 74-381 11/18/1974 04/26/1976 Discharger 11/18/1974 None N
133055 Reclamation Requirements 4 4B191023001 Historical REC 72-050 09/13/1972 11/24/1986 Discharger 09/13/1972 None N
131199 WDR 4 4B190140005 Historical WDRMUNILRG R4-2002-0158 09/26/2002 09/26/2007 Discharger 09/26/2002 None N
Total Regulatory Measures: 26
  
  
  
  
Expand/Contract Violations
Violations within the past year
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.
1125024 11/16/2023 Deficient Monitoring Total Chromium and Chrome 6 samples were not collected on the same day. The cont Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1125023 11/16/2023 Deficient Monitoring Total Chromium and Chrome 6 samples were not collected on the same day. The cont Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1125022 11/16/2023 Deficient Monitoring Total Chromium and Chrome 6 samples were not collected on the same day. The cont Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1125021 11/16/2023 Deficient Monitoring Total Chromium and Chrome 6 samples were not collected on the same day. The cont Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1125020 11/16/2023 Deficient Monitoring Total Chromium and Chrome 6 samples were not collected on the same day. The cont Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1125019 11/16/2023 Deficient Monitoring Total Chromium and Chrome 6 samples were not collected on the same day. The cont Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1124133 11/07/2023 Deficient Monitoring Nitrate+Nitrite and Nitrite samples were collected on 11/7/2023. The Nitrite sam Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1124132 11/10/2023 OEV Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 3.6 M Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1124131 11/16/2023 Deficient Monitoring Chlorine residual, a daily grab sample requirement, was not analyzed on 11/16/20 Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1123238 10/10/2023 Deficient Monitoring The monthly Bis (2-ethylhexyl) phthalate sample collection was missed for Tapia' Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1123237 10/31/2023 CAT1 Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average (Mean) limit Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1122620 09/19/2023 Deficient Monitoring The monthly requirement for Bis(2-ethylhexyl)phthalate was missed. Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1122619 08/30/2023 Deficient Monitoring 002 Effluent chronic toxicity was not conducted as there was not enough time in Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1122618 09/19/2023 CAT1 Total Dissolved Solids (TDS) Monthly Average limit is 950 mg/L and reported valu Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1122617 08/30/2023 Deficient Monitoring Malibu Creek chronic toxicity was not conducted as there was not enough time in Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1122616 08/30/2023 Deficient Monitoring Malibu Creek chronic toxicity was not conducted as there was not enough time in Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1122615 08/29/2023 Deficient Monitoring The quarterly testing was missed for the Tapia Influent. This consists of: Ammon Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1122614 08/30/2023 Deficient Monitoring Malibu Creek chronic toxicity was not conducted as there was not enough time in Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1122613 08/30/2023 Deficient Monitoring Malibu Creek chronic toxicity was not conducted as there was not enough time in Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1122612 08/30/2023 Deficient Monitoring Malibu Creek chronic toxicity was not conducted as there was not enough time in Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1122611 08/30/2023 Deficient Monitoring Malibu Creek chronic toxicity was not conducted as there was not enough time in Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1121821 08/30/2023 CAT1 Total Dissolved Solids (TDS) Monthly Average limit is 1000 mg/L and reported val Violation N eSMR Tapia WRF 133878 87-086 N
1121820 08/09/2023 CAT1 Total Dissolved Solids (TDS) Monthly Average limit is 1000 mg/L and reported val Violation N eSMR Tapia WRF 133878 87-086 N
1121819 09/27/2023 CAT1 Total Dissolved Solids (TDS) Monthly Average limit is 1000 % and reported value Violation N eSMR Tapia WRF 133878 87-086 N
1121818 08/30/2023 Deficient Monitoring Chronic toxicity was not sampled and analyzed. Discharge occurred unexpectedly i Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1121817 08/30/2023 Deficient Monitoring Chronic toxicity was not sampled and analyzed. Discharge started in the second h Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1121816 08/29/2023 CAT2 Copper, Total Monthly Average limit is 11 ug/L and reported value was 12 ug/L at Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1121815 08/30/2023 CAT1 Total Dissolved Solids (TDS) Monthly Average limit is 950 mg/L and reported valu Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1121814 08/30/2023 Deficient Monitoring Oil and grease sample collection was missed for the 005 Effluent in August. Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1121813 08/30/2023 Deficient Monitoring Chronic toxicity was not sampled and analyzed. Discharge started in the second h Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1119188 05/09/2023 CAT1 Sulfate, Total (as SO4) Monthly Average (Mean) limit is 300 mg/L and reported va Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1119187 05/11/2023 CAT1 Total Dissolved Solids (TDS) Monthly Average limit is 950 mg/L and reported valu Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1119186 05/09/2023 CAT2 Bis (2-Ethylhexyl) Phthalate Monthly Average (Mean) limit is 4 ug/L and reported Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1119185 05/09/2023 CAT2 Bis (2-Ethylhexyl) Phthalate Daily Maximum limit is 15 ug/L and reported value w Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1119184 05/09/2023 CAT2 Bis (2-Ethylhexyl) Phthalate Not Limited limit is 0 ug/L and reported value was Violation N eSMR Tapia WRF 413302 R4-2017-0124 N
1119183 06/14/2023 CAT1 Total Dissolved Solids (TDS) Monthly Average limit is 1000 mg/L and reported val Violation N eSMR Tapia WRF 133878 87-086 N
1119182 05/10/2023 CAT1 Sulfate, Total (as SO4) Monthly Average limit is 325 mg/L and reported value was Violation N eSMR Tapia WRF 133878 87-086 N
1119179 05/11/2023 CAT1 Total Dissolved Solids (TDS) Monthly Average limit is 1000 mg/L and reported val Violation N eSMR Tapia WRF 133878 87-086 N
Report defaults to display violations within the last year. Click here to see last five years of violations. Refer to the Interactive Violation Report for more data.
Total Violations: 38
*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
453199 Admin Civil Liability R4-2023-0291 ACL R4-2023-0291 for Las Virgenes MWD NPDMUNILRG 10/04/2023 Historical
438762 Admin Civil Liability R4-2020-0042 ACL R4-2020-0042 for Las Virgenes MWD NPDMUNILRG 10/12/2020 Historical
420917 Admin Civil Liability R4-2018-0011 ACL R4-2018-0011 for Las Virgenes MWD NPDMUNILRG 04/25/2018 Historical
412908 Time Schedule Order R4-2017-0125 TSO R4-2017-0125 for Las Virgenes MWD NPDMUNILRG 08/01/2017 Active
411091 Admin Civil Liability R4-2016-0370 ACL R4-2016-0370 for Las Virgenes MWD NPDMUNILRG 05/19/2017 Historical
410280 Admin Civil Liability R4-2016-0287 ACL R4-2016-0287 for Las Virgenes MWD NPDMUNILRG 11/21/2016 Historical
406332 Admin Civil Liability R4-2016-0179 ACL R4-2016-0179 for Las Virgenes MWD NPDMUNILRG 10/19/2016 Historical
403629 Admin Civil Liability R4-2015-0233 ACL R4-2015-0233 for Las Virgenes MWD NPDMUNILRG 01/22/2016 Historical
402111 13267 Letter R4-2015-0115 13267 Letter 07/14/2015 for Las Virgenes MWD NPDMUNILRG 07/14/2015 Historical
402110 Notice of Violation None NOV 07/14/2015 for Las Virgenes MWD NPDMUNILRG 07/14/2015 Historical
401290 Admin Civil Liability R4-2015-0035 ACL R4-2015-0035 for Las Virgenes MWD NPDMUNILRG 08/21/2015 Historical
395666 13267 Letter R4-2014-0035 13267 Letter 04/11/2014 for Las Virgenes MWD ENF13267 04/11/2014 Historical
382559 Admin Civil Liability R4-2011-0157-M ACL R4-2011-0157-M for Las Virgenes MWD NPDMUNILRG 02/02/2015 Historical
377389 Cease and Desist Order R4-2010-0167 CDO R4-2010-0167 enforcing R4-2010-0165 Las Virgenes MWD, Tapia WRF NPDMUNILRG 09/02/2010 Active
377388 Time Schedule Order R4-2010-0166 TSO R4-2010-0166 enforcing R4-2010-0165 Las Virgenes MWD, Tapia WRF NPDMUNILRG 09/02/2010 Historical
375481 Admin Civil Liability R4-2010-0111-M EPL No. R4-2010-0111-M 08/03/2010 for Las Virgenes MWD CI 7128 NPDNONMUNIPRCS 08/03/2010 Historical
354652 Admin Civil Liability R4-2008-0093-M Expedited Settlement Ltr sent 10/17/08 for 16 effluent violations. NPDMUNILRG 10/17/2008 Historical
343316 Notice of Violation NOV (Revised) Revised NOV sent 3/12/08 for 4 effluent violations & 48 reporting violations. NPDMUNILRG 03/12/2008 Historical
332550 Notice of Violation NOV NOV - Las Virgenes MWD, Tapia WRF (8/16/07) NPDMUNILRG 08/16/2007 Historical
305756 Notice of Violation NOV revised NOV (revised) Las Virgenes MWD, Tapia WRF (8/19/05) NPDESWW 08/19/2005 Historical
304595 Time Schedule Order R4-2005-0075 TSO R4-2005-0075 enforcing R4-2005-0074 Las Virgenes MWD, Tapia WRF NPDMUNILRG 11/03/2005 Historical
261490 Notice of Violation NOV NOV - Las Virgenes MWD, Tapia WRF (8/19/05) NPDESWW 08/19/2005 Historical
256565 13267 Letter 13267 Letter 13267 Letter Las Virgenes MWD, Tapia WRF (3/18/05) NPDMUNILRG 03/18/2005 Historical
255182 Referral to USEPA Referral to USEPA Referred to USEPA Las Virgenes MWD, Tapia WRF (10/12/03) NPDMUNILRG 10/12/2003 Historical
250337 Admin Civil Liability R4-2003-0114-R MMPC R4-2003-0114-R Las Virgenes MWD, Tapia WRF (10/27/00) NPDMUNILRG 10/27/2003 Historical
249566 13267 Letter 13267 Letter 13267 Letter Las Virgenes MWD, Tapia WRF (10/14/03) NPDMUNILRG 10/14/2003 Historical
246197 Admin Civil Liability R4-2003-0009 ACLC R4-2003-0009 Las Virgenes MWD, Tapia WRF (1/29/03) NPDMUNILRG 01/29/2003 Historical
244607 Admin Civil Liability R4-1998-0091 ACLC R4-1998-0091 Las Virgenes MWD, Tapia WRF (11/25/98) NPDMUNILRG 11/25/1998 Superceded
244583 Admin Civil Liability R4-1998-0079 ACLC R4-1998-0079 Las Virgenes MWD, Tapia WRF (10/8/98) NPDMUNILRG 10/08/1998 Superceded
242912 Notice of Violation NOV NOV - Las Virgenes MWD, Tapia WRF (06/06/03) NPDMUNILRG 06/06/2003 Historical
242873 13267 Letter 13267 Letter 13267 Letter Las Virgenes MWD, Tapia WRF (06/06/03) NPDMUNILRG 06/06/2003 Historical
242657 Admin Civil Liability R4-2003-0114 MMPC R4-2003-0114 Las Virgenes MWD, Tapia WRF (08/26/03) NPDMUNILRG 08/26/2003 Superceded
242625 Notice of Violation NOV (revised) NOV (revised) Las Virgenes MWD, Tapia WRF (08/23/03) NPDMUNILRG 08/26/2003 Historical
238872 Notice of Violation NOV NOV - Las Virgenes MWD, Tapia WRF Groundwater Discharge (10/02/01) NPDNONMUNIPRCS 10/02/2001 Historical
235812 Notice of Violation NOV NOV - Las Virgenes MWD, Tapia WRF 905/18/01) NPDMUNILRG 05/18/2001 Historical
235195 13267 Letter 13267 Letter 13267 Letter Las Virgenes MWD, Tapia WRF (03/13/01) NPDMUNILRG 03/13/2001 Historical
228498 Notice of Violation NOV NOV - Las Virgenes MWD, Tapia WRF (05/19/00) NPDMUNILRG 05/19/2000 Historical
221535 Admin Civil Liability R4-1998-0091 ACLO R4-1998-0091 Las Virgenes MWD, Tapia WRF (12/14/98) NPDMUNILRG 12/14/1998 Historical
221534 Admin Civil Liability R4-1998-0079 ACLO R4-1998-0079 Las Virgenes MWD, Tapia WRF (12/14/98) NPDMUNILRG 12/14/1998 Historical
220397 Time Schedule Order R4-1997-0136 TSO 97-136 Las Virgenes MWD, Tapia WRF (11/03/97) NPDMUNILRG 11/03/1997 Historical
219984 Cease and Desist Order R4-1979-0173 CDO 76-123 (revision) Las Virgenes MWD, Tapia WRF (11/26/79) NPDMUNILRG 11/26/1979 Historical
219877 Cease and Desist Order R4-1984-0086 Recission of CDO 79-173 Las Virgenes MWD, Las Virgenes MWD (09/17/84) NPDMUNILRG 09/17/1984 Historical
219876 Cease and Desist Order R4-1976-0123 CDO 76-123 Las Virgenes MWD, Tapia WRF (08/23/76) NPDMUNILRG 08/23/1976 Historical
Total Enforcement Actions: 43
  
  
  
  
Expand/Contract Enforcement Actions
Regulatory Measures linked to Related Parties
Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status
Total Regulatory Measures linked to Related Parties: 0
  
  
The current report was generated with data as of: 05/02/2024
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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