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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
27812 Mariposa Cnty DPW County Agency 4639 Ben Hur Road Mariposa, CA 95338 209-966-5356 gcrane@mariposacounty.org
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
889888 Buckeye Rd Bridge Mariposa 5F Dredge/Fill Site Owner 08/15/2023 None
838813 Darrah Road Bridge Replacement Mariposa 5F Dredge/Fill Site Owner 08/15/2017 None
215910 Coulterville WWTF Mariposa 5F Wastewater Treatment Facility Owner 03/16/2010 None
726590 Coulterville CS Mariposa 5S Collection_System Owner 09/19/2008 None
215910 Coulterville WWTF Mariposa 5F Wastewater Treatment Facility Owner 03/20/2007 04/16/2007
646986 Mariposa Co YOSEMITE WEST CS Mariposa 5F Collection_System Owner 02/13/2007 None
646992 Mariposa Co MARIPOSA PINES CS Mariposa 5F Collection_System Owner 02/13/2007 None
646721 Mariposa Co DON PEDRO SEWER ZONE 1 CS Mariposa 5F Collection_System Owner 02/06/2007 None
220495 Don Pedro Sewer Zone 1 Mariposa 5F Wastewater Treatment Facility Owner 02/10/2000 None
239541 Mariposa County Landfill Mariposa 5F Land fill Owner 01/18/2000 None
215910 Coulterville WWTF Mariposa 5F Wastewater Treatment Facility Owner 12/23/1999 03/19/2007
239543 Mariposa Pines WWTF Mariposa 5F Wastewater Treatment Facility Owner 02/05/1997 None
274513 Yosemite West MD WWTF Mariposa 5F Wastewater Treatment Facility Owner 11/18/1966 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
70303 Dana Hertfelder Person Legally Responsible Official 11/18/1966 07/25/2025 None
524844 Allen Toschi Person Legally Responsible Official 10/14/2010 07/21/2025 None
369851 Darryl Nielsen Person Legally Responsible Official 03/20/2007 07/21/2025 None
143658 James Petropolos Person Enforcement Contact 01/09/2004 None None
607211 Matiel Holloway Person Legally Responsible Official 08/15/2023 None None
638922 John Luthey Person Data Submitter 04/10/2023 None None
638922 John Luthey Person Legally Responsible Official 06/06/2025 None None
652815 Jason Lewis Person Data Submitter 10/16/2025 None None
567840 Gary Brown Person Employee 08/15/2017 None None
567840 Gary Brown Person Legally Responsible Official 08/14/2017 None None
525063 Tony Souza Person Data Submitter 11/08/2010 None None
652815 Jason Lewis Person Data Submitter 10/14/2025 None None
Total Related Parties: 12
  
  
  
  
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?
143170 WDR 5F 5C221002001 Historical WDRMUNILRG 67-052 11/18/1966 05/30/1985 Discharger 11/18/1966 None N
143633 WDR 5F 5C221003001 Historical WDRMUNIOTH 70-170 05/25/1970 09/16/1994 Discharger 05/25/1970 None N
143497 WDR 5F 5C220300001 Historical LNDISP 74-217 03/22/1974 01/25/1991 Discharger 03/22/1974 None N
144246 WDR 5F 5C220101001 Historical WDRMUNIOTH 77-240 09/25/1977 09/26/1985 Discharger 09/25/1977 None N
144168 WDR 5F 5C221002001 Historical WDRMUNILRG 85-111 05/31/1985 04/30/1999 Discharger 05/31/1985 None N
144565 WDR 5F 5C221007001 Historical WDRMUNIOTH 85-229 08/23/1985 06/20/1997 Discharger 08/23/1985 None N
144605 WDR 5F 5C220101001 Historical WDRMUNIOTH 85-256 09/27/1985 08/03/2000 Discharger 09/27/1985 None N
144735 WDR 5F 5C220300001 Historical LNDISP 91-018 01/25/1991 04/27/2000 Discharger 01/25/1991 None Y
145001 WDR 5F 5C221003001 Historical WDRMUNIOTH 94-281 09/16/1994 05/30/2013 Discharger 09/16/1994 None Y
146330 WDR 5F 5C221007001 Historical WDRMUNIOTH 97-134 06/20/1997 02/17/2021 Discharger 06/20/1997 None N
145594 WDR 5F 5C221002001 Active WDRMUNILRG 99-004 04/30/1999 None Discharger 04/30/1999 None N
147821 WDR 5F 5C220300001 Historical LNDISP 00-090 04/28/2000 06/05/2003 Discharger 04/28/2000 None N
148058 WDR 5F 5C220101001 Historical WDRMUNIOTH 00-193 08/04/2000 03/15/2023 Discharger 08/04/2000 None N
132805 WDR 5F 5C220300001 Historical LFOPER R5-2003-0094 06/06/2003 04/26/2023 Discharger 06/06/2003 None N
318677 Enrollee - WDR 5S 5SSO11324 Active SSOMUNISML 2022-0103-DWQ 01/09/2007 None Discharger 01/09/2007 None N
320699 Enrollee - WDR 5F 5SSO11326 Active SSOMUNISML 2022-0103-DWQ 02/13/2007 None Discharger 02/13/2007 None N
320708 Enrollee - WDR 5F 5SSO11323 Active SSOMUNISML 2022-0103-DWQ 02/13/2007 None Discharger 02/13/2007 None N
320711 Enrollee 5F 5SSO11325 Historical SSOMUNISML 2006-0003-DWQ 02/13/2007 06/04/2023 Discharger 02/13/2007 None N
331539 WDR 5F 5C221003001 Active WDRMUNIOTH R5-2013-0062 05/31/2013 None Discharger 09/05/2007 None N
415754 401 Certification 5F 5B22CR00038 Historical CERFILLEXC None 12/19/2017 01/07/2025 Discharger 08/15/2017 None N
439801 Co-Permitee SB 5C220300001 Active SLIC 2019-0006-DWQ 03/20/2019 None Discharger 08/24/2020 None N
440058 Enrollee - WDR 5F 5C221007001 Active WDRMUNIOTH 2014-0153-DWQ 02/18/2021 None Discharger 09/04/2020 None N
452689 WDR 5F 5C220300001 Active LFOPER R5-2023-0010 04/27/2023 None Discharger 05/18/2023 None N
453490 Enrollee - WDR 5F 5C220101001 Active WDRMUNIOTH 2014-0153-DWQ 03/16/2023 None Discharger 07/14/2023 None N
453937 401 Certification 5F 5B22CR00068 Active CERFILLEXC None 10/05/2023 None Discharger 08/15/2023 None N
Total Regulatory Measures: 25
  
  
  
  
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.
1143573 05/11/2025 Sanitary Sewer Overflow/Spill/ Type: Category 1 Spill; Pump Station Failure - Mechanical,Pump Station Failure - Violation None SSO Mariposa Co DON PEDRO SEWER ZONE 1 CS 320699 2022-0103-DWQ 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: 1
*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
229364 Waste Discharge Requirements 91-018 Enforcement - 5C220300001 LFOPER 01/25/1991 Active
240252 Waste Discharge Requirements R5-2000-0090 Enforcement - 5C220300001 LNDISP 04/28/2000 Active
230086 Staff Enforcement Letter UNKNOWN Enforcement - 5C221002001 WDRMUNILRG 11/24/1999 Historical
387616 Staff Enforcement Letter None SEL (date) for Mariposa Co Dept of Public Works Yosemite West Maintenance Dist. WDRMUNILRG None Active
247713 Staff Enforcement Letter None SEL 09/03/2002 for Mariposa Co Yosemite West WWTF WDRMUNILRG 09/03/2002 Historical
247664 Staff Enforcement Letter None SEL 06/21/2002 for Mariposa County Yosemite West MD, WWTF WDRMUNILRG 06/21/2002 Historical
255208 Staff Enforcement Letter None SEL 03/22/2000 for Mariposa Co DPW Coulterville WWTF WDRMUNIOTH 03/22/2000 Historical
255209 Staff Enforcement Letter None SEL 03/22/2000 for Mariposa County DPW, Maraposa Pines WWTF WDRMUNIOTH 03/22/2000 Historical
375399 Oral Communication None Oral Com 10/16/2008 for Mariposa Co DPW Coulterville WWTF WDRMUNIOTH 10/16/2008 Historical
341905 Oral Communication None Oral Com 03/03/2008 for Mariposa County Yosemite West WWTF WDRMUNILRG 03/03/2008 Historical
447462 Oral Communication None Oral Com 04/06/2022 for Mariposa Cnty DPW WDRMUNIOTH 04/06/2022 Historical
251434 Notice of Violation UNKNOWN Enforcement - 5C220300001 LNDISP 01/09/2004 Active
237787 Notice of Violation None NOV, Enforcement - 5C220300001 LNDISP 10/03/2001 Historical
378390 Notice of Violation None NOV 07/20/2010 for Mariposa Cnty DPW SSOMUNISML 07/20/2010 Historical
394844 Notice of Violation None NOV 2/6/2014 for Mariposa Cnty DPW (3/10/2014) WDRMUNIOTH 02/06/2014 Historical
317683 Notice of Violation None NOV 10/18/2006 for Mariposa Cnty Mariposa Co Landfill LFOPER 10/18/2006 Historical
255634 Notice of Violation UNKNOWN Enforcement - 5C220300001 LNDISP 05/04/2005 Active
374077 Notice of Violation None NOV 04/06/2010 for Mariposa Co PWD Mariposa Co Landfill LFOPER 04/06/2010 Historical
363217 Notice of Violation None NOV 04/03/2008 for Mariposa Co DPW Coulterville WWTF WDRMUNIOTH 04/03/2008 Historical
251494 Notice of Violation UNKNOWN Enforcement - 5C220300001 LNDISP 09/17/2003 Active
242311 Notice of Violation None NOV 04/23/2002 for Mariposa Co DPW Coulterville WWTF WDRMUNIOTH 04/23/2002 Historical
247141 Notice of Violation None NOV 7/23/02 to Mariposa Co Yosemite West MD WWTF WDRMUNILRG 07/23/2002 Historical
244301 Notice of Violation UNKNOWN Enforcement - 5C220300001 LNDISP 05/05/2003 Active
242289 Notice of Violation None NOV 4/25/02 to Mariposa Don Pedro Sewer Zone 1 WWTF WDR 04/25/2002 Historical
378389 Notice of Violation None NOV 07/20/2010 for Mariposa Cnty DPW SSOMUNISML 07/20/2010 Historical
359373 Notice of Violation None NOV 11/19/2008 for Mariposa County PWD LFOPER 11/19/2008 Historical
247665 Notice of Violation None NOV 12/21/2001 to Mariposa Co Yosemite West WWTF WDRMUNILRG 12/21/2001 Historical
378391 Notice of Violation None NOV 07/20/2010 for Mariposa Cnty DPW SSOMUNISML 07/20/2010 Historical
382432 Notice of Violation None NOV 12/16/2011 for Mariposa Cnty DPW, Mariposa Co YOSEMITE WEST CS SSOMUNISML 12/16/2011 Historical
253902 Clean-up and Abatement Order R5-2005-0700 Enforcement - 5C220300001 LNDISP 01/19/2005 Active
229687 Cease and Desist Order 00-077 Order 00-077 to modify CDO 99-005 for Yosemite West MD WWTF WDRMUNILRG 04/28/2000 Historical
223022 Cease and Desist Order 99-005 CDO 99-005 for Mariposa Co Yosemite West WWTF WDRMUNILRG 04/30/1999 Historical
223786 Cease and Desist Order 94-282 CDO 94-282 for Don Pedro Sewer Zone 1 WWTF WDRMUNIOTH 09/16/1994 Historical
243091 Cease and Desist Order R5-2003-0070 CDO R5-2003-0070 for Mariposa Co Yosemite West WWTF WDRMUNILRG 04/25/2003 Active
Total Enforcement Actions: 34
  
  
  
  
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: 10/31/2025
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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