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 null null 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 null 269255 Unocal #3926 Santa Clara 2 Facility Owner 08/12/1996 null 256362 Service Station #4425 Santa Clara 2 Facility Owner 03/16/1988 null 225012 Former Unocal #715 Santa Clara 2 Facility Owner 07/23/1996 null 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 null null Regulatory Measures(non-enforcement) Reg. Measure ID Regulatory Measure Type Region WDID Title Status Program Order No. RM Effective Date RM Termination Date Relationship Relationship Start Date Relationship End Date 259639 Letter 2 null 2 438499001-LT981013 Historical NPDESWW LT981013 null null Discharger 10/13/1998 null 183177 Enrollee 2 2 438499001 2 438499001 Historical NPDNONMUNIPRCS 96-078 03/13/1995 06/18/2001 Discharger 09/01/2005 null 183161 Enrollee 2 2 438481001 2 438481001 Historical NPDNONMUNIPRCS 96-078 11/30/1993 06/18/2001 Discharger 09/01/2005 null 183057 Enrollee 2 2 438286001 2 438286001 Historical NPDNONMUNIPRCS 93-06902 03/16/1988 04/17/1996 Discharger 09/01/2005 null 143303 NPDES Permit 2 2 019217001 NPDES 94-055 for UNOCAL CORP. - CERT Historical NPDESWW 94-055 05/18/1994 null Discharger 05/18/1994 null 142714 WDR 2 2 438286001 NPDES 93-06902 for UNOCAL CORP. - CERT Historical NPDESWW 93-06902 07/21/1993 null Discharger 07/21/1993 null 142506 NPDES Permit 2 2 019217001 NPDES 99-020 for UNOCAL CORP. - CERT Historical NPDESWW 99-020 05/25/1999 null Discharger 05/25/1999 null 141531 NPDES Permit 2 2 019217001 NPDES 88-067 for UNOCAL CORP. - CERT Historical NPDESWW 88-067 04/20/1988 null Discharger 04/20/1988 null 141515 WDR 2 2 438286001 NPDES 88-031 for UNOCAL CORP. - CERT Historical NPDESWW 88-031 03/16/1988 null Discharger 03/16/1988 null Violations within the past calendar 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. 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 Regulatory Measures linked to Related Parties Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status