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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
540254 Rick Weyen 19100 Ridgewood Parkway San Antonio, TX 78259 210-626-6000 Rick.D.Weven@tsocorp.com
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
Total Related Places: 0
  
  
  
  
Expand/Contract Related Parties
Related Parties
Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification
540253 Marathon Petroleum Corporation Organization Legally Responsible Official 05/30/2013 None Privately-Owned Business
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?
Total Regulatory Measures: 0
  
  
  
  
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
Total Enforcement Actions: 0
  
  
  
  
Expand/Contract Enforcement Actions
Regulatory Measures linked to Related Parties
Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status
193790 Marathon Petroleum Corporation Enrollee - NPDES NPDNONMUNIPRCS 03/17/1997 Historical
193844 Marathon Petroleum Corporation Enrollee - NPDES NPDNONMUNIPRCS 08/20/2001 Active
193848 Marathon Petroleum Corporation Enrollee - NPDES NPDNONMUNIPRCS 01/11/2002 Historical
325389 Marathon Petroleum Corporation Enrollee - NPDES NPDNONMUNIPRCS 11/30/2007 Active
359288 Marathon Petroleum Corporation NPDES Permit NPDNONMUNIPRCS 01/11/2009 Historical
371741 Marathon Petroleum Corporation NPDES Permit NPDNONMUNIPRCS 11/01/2009 Historical
377569 Marathon Petroleum Corporation NPDES Permit NPDNONMUNIPRCS 03/04/2011 Historical
396633 Marathon Petroleum Corporation NPDES Permit NPDNONMUNIPRCS 11/01/2014 Historical
398694 Marathon Petroleum Corporation NPDES Permit NPDNONMUNIPRCS 06/01/2015 Historical
402051 Marathon Petroleum Corporation NPDES Permit NPDNONMUNIPRCS 08/01/2016 Active
430285 Marathon Petroleum Corporation NPDES Permit NPDNONMUNIPRCS 12/01/2020 Active
435888 Marathon Petroleum Corporation NPDES Permit NPDNONMUNIPRCS 01/01/2021 Active
459468 Marathon Petroleum Corporation Enrollee - WDR WDRNONMUNIPRCS 05/30/2025 Active
Total Regulatory Measures linked to Related Parties: 13
  
  
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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