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California Integrated Water Quality System Project (CIWQS)
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Place ID 251548 		  
  
  
  
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General Information
Region Place ID Place Name Place Type Place Address Place County
9 251548 Ralph W Chapman WRF Wastewater Treatment Facility 11901 Singer Lane Spring Valley, CA, 91978 San Diego
Expand/Contract Related Parties
Related Parties
Party Party Type Party Name Role Classification Relationship Start Date Relationship End Date
543703 Person Alex Cali Case Worker 02/05/2018 03/07/2019
330013 Person Olufisayo Osibodu Case Worker 02/14/2017 02/05/2018
32844 Organization Otay MWD Owner 02/15/1997
Total Related Parties: 3
Expand/Contract Regulatory Measures
Regulatory Measures
Reg Measure ID Reg Measure Type Region Program Order No. WDID Effective Date Expiration Date Status Amended?
440381 Co-Permitee SB SLIC 2020-0015-DWQ 9 000000217 07/09/2020 Active N
401763 Enrollee - WDR 9 REC 2016-0068-DDW 9 000000217 01/08/2016 06/02/2029 Active N
325858 WDR 9 WDRMUNILRG R9-2007-0038 9 000000217 05/09/2007 05/09/2017 Active N
142401 WDR 9 WDRMUNILRG 92-025 9 000000217 06/29/1992 05/19/2012 Historical Y
142154 WDR 9 WDRMUNILRG 91-009 9 000000217 01/28/1991 01/28/1996 Historical N
143327 WDR 9 WDRMUNILRG 87-099 9 000000217 06/15/1987 06/15/1990 Historical N
141686 WDR 9 WDRMUNILRG 78-055 9 000000217 09/25/1978 09/25/1981 Historical Y
Total Reg Measures: 7
Expand/Contract Violations
Violations
Violation ID Occurred Date Violation Type (-) Violation Description Corrective Action Status Classification Source
1092182 04/05/2021 UAUTHDISC Failure to prohibit the discharge of pollutants to surface waters except in compliance with a National Pollutant Discharge Elimination System (NPDES) permit. The District notified the San Diego Water Board on April 5, 2021, that a recycled water pipeline failed discharging 812,600 gallons of recycled water to the County of San Diego¿s MS4 and Poggi Canyon Creek on April 5, 2021. Violation B Report
1092181 04/05/2021 UAUTHDISC Failure to prohibit the discharge of treated liquid waste in a manner other than described in Order No. R9-2007-0038. The District notified the San Diego Water Board on April 5, 2021, that a recycled water pipeline failed discharging 812,600 gallons of recycled water to the County of San Diego¿s MS4 and Poggi Canyon Creek on April 5, 2021. Violation B Report
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.
Total Violations: 2 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
UAUTHDISC = Unauthorized Discharge
Expand/Contract Enforcement Actions
Enforcement Actions
Enf Id Enf Type Enf Order No. Effective Date Status
441196 Notice of Violation R2-2020-0263 01/22/2021 Historical
433470 Staff Enforcement Letter R9-2007-0038 09/27/2019 Historical
420013 13267 Letter R9-2018-0057 06/18/2018 Historical
411845 Staff Enforcement Letter null 03/06/2017 Historical
389499 Staff Enforcement Letter 03/05/2013 Historical
382715 Notice of Violation NO. R9-2012-0021 02/15/2012 Historical
377065 Staff Enforcement Letter 12/30/2010 Historical
376762 Staff Enforcement Letter 12/09/2010 Historical
376077 Staff Enforcement Letter 09/30/2010 Historical
368964 Notice of Violation NO. R9-2010-0099 07/12/2010 Historical
344448 Staff Enforcement Letter 04/04/2008 Historical
305808 Staff Enforcement Letter 10/17/2006 Historical
253027 Staff Enforcement Letter 09/21/2004 Historical
250951 Staff Enforcement Letter 11/18/2003 Historical
242553 Staff Enforcement Letter 04/25/2002 Historical
239132 Staff Enforcement Letter 12/18/2001 Historical
234828 Staff Enforcement Letter 06/26/2000 Historical
233953 Staff Enforcement Letter 03/10/2000 Historical
Total Enf Actions: 18
Expand/Contract Inspections
Inspections
Inspection ID Inspection Type Lead Inspector Actual End Date Planned Violations Attachment
60568166 B Type compliance inspection Mahsa Izadmehr 06/19/2025 N 0 N/A
50014405 B Type compliance inspection Mahsa Izadmehr 12/20/2022 N 0 Download
28633776 B Type compliance inspection Olufisayo Osibodu 05/17/2017 N 0 N/A
15869787 B Type compliance inspection Olufisayo Osibodu 03/27/2014 N 0 N/A
11879916 B Type compliance inspection Olufisayo Osibodu (Multiple) 03/21/2013 N 0 N/A
1841743 B Type compliance inspection Cathryn Henning (Multiple) 09/02/2009 Y 0 Download
329708 B Type compliance inspection Bob Baker 05/08/2003 Y 0 N/A
298159 B Type compliance inspection David Hanson 05/30/2002 Y 0 N/A
298185 B Type compliance inspection Bob Baker 04/23/2001 Y 0 N/A
298186 A Type compliance inspection Bob Baker 03/31/2000 Y 0 N/A
298189 B Type compliance inspection Rebecca Stewart 09/13/1999 Y 0 N/A
298160 B Type compliance inspection Bob Baker 06/16/1999 Y 0 N/A
298162 A Type compliance inspection Bob Baker 03/15/1999 Y 0 N/A
298183 B Type compliance inspection Bob Baker 06/11/1998 Y 0 N/A
298182 B Type compliance inspection Bob Baker 12/10/1997 Y 0 N/A
298181 A Type compliance inspection Bob Baker 08/25/1997 Y 0 N/A
298164 B Type compliance inspection Bob Baker 06/04/1997 Y 0 N/A
298158 A Type compliance inspection Bob Baker 03/19/1997 Y 0 N/A
298161 B Type compliance inspection Bob Baker 09/30/1996 Y 0 N/A
298163 A Type compliance inspection Bob Baker 06/20/1996 Y 0 N/A
298184 B Type compliance inspection Bob Baker 10/25/1995 Y 0 N/A
298190 B Type compliance inspection Rebecca Stewart 11/21/1994 Y 0 N/A
298192 B Type compliance inspection Laurie Walsh 04/29/1994 Y 0 N/A
298187 A Type compliance inspection Laurie Walsh 03/08/1994 Y 0 N/A
298188 B Type compliance inspection Rebecca Stewart 11/18/1992 Y 0 N/A
298156 Miscellaneous inspection Bob Baker 06/22/1992 Y 0 N/A
298157 B Type compliance inspection Bob Baker 04/13/1992 Y 0 N/A
298191 A Type compliance inspection Carol Tamaki 02/04/1992 Y 0 N/A
Total Inspections: 28 Last Inspection: 06/19/2025
  
The current report was generated with data as of: 10/24/2025
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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