General Information Party ID Party Name Party Classification Mailing Address Work Phone Email/Website 40968 Vishay Siliconix, Inc. Privately-Owned Business 2201 Laurelwood Road Santa Clara, CA 95054 408-567-8939 michael.osullivan@vishay.com Related Places Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date 202013 Vishay Siliconix Santa Clara 2 Groundwater Cleanup Site Owner 02/20/1991 null Related Parties Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification 560056 Michael O'Sullivan Person Legally Responsible Official 10/19/2016 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 397951 Enrollee - NPDES 2 2 438291003 Enrollee 2201 Laurelwood for Vishay Siliconix, Inc. Historical NPDNONMUNIPRCS R2-2017-0048 08/25/2014 11/29/2021 Discharger 09/05/2014 null 372733 Enrollee 2 2 438291002 Enrollee- NPDES CAG912003, 2201 Laurelwood Vishay Siliconix 2 438291002 Historical NPDNONMUNIPRCS R2-2009-0059 12/07/1995 08/24/2014 Discharger 09/01/2005 null 183061 Enrollee 2 2 438291002 Enrollee- NPDES CAG912003, Order 04-055 - Vishay Siliconix Historical NPDNONMUNIPRCS null 09/08/2004 12/02/2009 Discharger 09/01/2005 null 142409 NPDES Permit 2 2 438291002 NPDES 96-0227 for SILICONIX, INC./VISHAY Historical NPDNONMUNIPRCS 96-0227 02/21/1996 null Discharger 02/21/1996 null 141876 NPDES Permit 2 2 438291002 NPDES 91-022 for SILICONIX, INC./VISHAY Historical NPDNONMUNIPRCS 91-022 02/20/1991 null Discharger 02/20/1991 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 373433 Admin Civil Liability null 2010 March Expediated MMP Offer Letter NPDESWW 03/11/2009 Historical 227431 Staff Enforcement Letter UNKNOWN Enforcement - 2 438291002 NPDESWW 09/27/1999 Historical 219838 Clean-up and Abatement Order 89-027 Enforcement - 2 438291N01 UNREGS 02/15/1989 Active 219826 Clean-up and Abatement Order 91-026 Enforcement - 2 438291N01 UNREGS 02/20/1991 Active Regulatory Measures linked to Related Parties Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status