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California Integrated Water Quality System Project (CIWQS)
   Party At-A-Glance Report

  
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General Information
Party ID Party Name Party Classification Mailing Address Work Phone Email/Website
528784 Rancho Guejito Corporation Privately-Owned Business 951-698-1896 None
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
880640 Rockwood Domestic Water Supply San Diego 9 Water Treatment Plant Owner and Operator 04/14/2022 None
817620 Rancho Guejito Low-Flow Study and Stream Guage Calibration San Diego 9 Dredge/Fill Site Owner 08/26/2015 None
792888 Rancho Guejito Low Flow Study and Stream Gauge Calibration San Diego 9 Dredge/Fill Site Owner 03/25/2013 None
792887 Rancho Guejito Evapotranspiration Study San Diego 9 Dredge/Fill Site Owner 03/25/2013 None
770636 Stream Gauge Installation San Diego 9 Dredge/Fill Site Operator 09/01/2011 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
543970 Hank Rupp Person Legally Responsible Official 10/28/2010 None None
Total Related Parties: 1
  
  
  
  
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?
450500 WDR 9 9000003862 Active WDRINDIVSML R9-2023-0005 05/10/2023 None Discharger 12/14/2022 None N
402623 Enrollee - 401 Certification 9 9000002883 Historical CERFILLEXC NWP-2012 10/07/2015 10/07/2020 Discharger 08/26/2015 None N
389679 Enrollee - 401 Certification 9 None Historical CERFILLEXC NWP-2012 04/25/2013 03/17/2017 Discharger 03/25/2013 None N
389678 Enrollee - 401 Certification 9 None Historical CERFILLEXC NWP-2012 04/25/2013 03/17/2017 Discharger 03/25/2013 None N
381199 401 Certification 9 9 000002336 Historical CERFILLEXC NWP-5 08/29/2011 08/27/2016 Discharger 09/01/2011 None N
Total Regulatory Measures: 5
  
  
  
  
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.
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: 0
*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
387876 Notice of Violation R9-2012-0040 Rancho Guejito Corp. NOV R9-2012-0040 dated 22 MAR 2012 DISCHSW 03/22/2012 Historical
387822 Clean-up and Abatement Order R9-2013-0009 CAO R9-2013-0009 for Rancho Guejito Corp. DISCHSW 04/23/2013 Historical
Total Enforcement Actions: 2
  
  
  
  
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: 05/20/2026
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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