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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
34609 Unocal Corporation San Ramon Privately-Owned Business 2000 Crow Canyon Place 400 San Ramon, CA 94583 None None
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
269270 Unocal Chemicals Div, GP Alameda 2 Manufacturing NEC Owner 04/20/1988 None
269255 Unocal #3926 Santa Clara 2 Facility Owner 08/12/1996 None
256362 Service Station #4425 Santa Clara 2 Facility Owner 03/16/1988 None
225012 Former Unocal #715 Santa Clara 2 Facility Owner 07/23/1996 None
Total Related Places: 4
  
  
  
  
Expand/Contract Related Parties
Related Parties
Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification
62999 Edward Ralston Person Legal representative 06/17/2005 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?
259639 Letter 2 None Historical NPDESWW LT981013 None None Discharger 10/13/1998 None N
183177 Enrollee 2 2 438499001 Historical NPDNONMUNIPRCS 96-078 03/13/1995 06/18/2001 Discharger 09/01/2005 None N
183161 Enrollee 2 2 438481001 Historical NPDNONMUNIPRCS 96-078 11/30/1993 06/18/2001 Discharger 09/01/2005 None N
183057 Enrollee 2 2 438286001 Historical NPDNONMUNIPRCS 93-06902 03/16/1988 04/17/1996 Discharger 09/01/2005 None N
143303 NPDES Permit 2 2 019217001 Historical NPDESWW 94-055 05/18/1994 None Discharger 05/18/1994 None N
142714 WDR 2 2 438286001 Historical NPDESWW 93-06902 07/21/1993 None Discharger 07/21/1993 None N
142506 NPDES Permit 2 2 019217001 Historical NPDESWW 99-020 05/25/1999 None Discharger 05/25/1999 None N
141531 NPDES Permit 2 2 019217001 Historical NPDESWW 88-067 04/20/1988 None Discharger 04/20/1988 None N
141515 WDR 2 2 438286001 Historical NPDESWW 88-031 03/16/1988 None Discharger 03/16/1988 None N
Total Regulatory Measures: 9
  
  
  
  
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
241651 13267 Letter UNKNOWN Enforcement - 2 07-0450 UST 05/01/2002 Active
238511 13267 Letter UNKNOWN Enforcement - 2 07-0450 UST 11/02/2001 Historical
236711 13267 Letter UNKNOWN Enforcement - 2 07-0450 UST 08/20/1999 Historical
236627 13267 Letter UNKNOWN Enforcement - 2 07-0345 UST 03/17/2000 Historical
236624 13267 Letter UNKNOWN Enforcement - 2 07-0359 UST 07/20/2000 Historical
236070 13267 Letter UNKNOWN Enforcement - 2 07-0601 UST 01/27/2000 Historical
236069 13267 Letter UNKNOWN Enforcement - 2 07-0601 UST 06/01/2000 Historical
236068 13267 Letter UNKNOWN Enforcement - 2 07-0601 UST 10/07/1999 Historical
227514 13267 Letter UNKNOWN Enforcement - 2 019217001 NPDESWW 10/29/1999 Historical
221914 Clean-up and Abatement Order R2-1998-0041 Enforcement - 2 019217N02 UNREGS 05/20/1998 Active
219962 Clean-up and Abatement Order 90-133 Enforcement - 2 019217N02 UNREGS 09/19/1990 Historical
219391 Clean-up and Abatement Order 93-025 Enforcement - 2 019217N02 UNREGS 03/17/1993 Active
Total Enforcement Actions: 12
  
  
  
  
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: 11/03/2025
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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