Welcome to California
California Home
Welcome to California - images of Golden Gate Bridge, ocean sunset, waterfall, flowers, and city skyline California Home Welcome to the California Environmental Protection Agency
California Integrated Water Quality System Project (CIWQS)
   Party At-A-Glance Report

  
   [VIEW PRINTER FRIENDLY VERSION] [EXPORT THIS REPORT TO EXCEL]

  
  
  
  
  
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
  
  
  
  
Expand/Contract Related Places
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 None
Total Related Places: 1
  
  
  
  
Expand/Contract Related Parties
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 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?
183061 Enrollee 2 2 438291002 Historical NPDNONMUNIPRCS None 09/08/2004 12/02/2009 Discharger 09/01/2005 None N
141876 NPDES Permit 2 2 438291002 Historical NPDNONMUNIPRCS 91-022 02/20/1991 None Discharger 02/20/1991 None N
142409 NPDES Permit 2 2 438291002 Historical NPDNONMUNIPRCS 96-0227 02/21/1996 None Discharger 02/21/1996 None N
372733 Enrollee 2 2 438291002 Historical NPDNONMUNIPRCS R2-2009-0059 12/07/1995 08/24/2014 Discharger 09/01/2005 None N
397951 Enrollee - NPDES 2 2 438291003 Historical NPDNONMUNIPRCS R2-2017-0048 08/25/2014 11/29/2021 Discharger 09/05/2014 None N
Total Regulatory Measures: 5
  
  
  
  
Expand/Contract Violations
Violations within the past five years
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.
1077961 07/30/2019 Unauthorized Discharge A pipe valve connecting extraction wells and groundwater treatment system was improperly closed and leaked untreated groundwater to a plugged storm drain entry point. Volume is estimated less than 1,000 gallons. There was no release to any surface water, but soil within 5 feet of valve was saturated. Violation N Report Vishay Siliconix 397951 R2-2017-0048 N
Report currently showing last five years of violations. Click here to return to viewing one year of violations. Refer to the Interactive Violation Report for more data.
Total Violations: 1
*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
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
227431 Staff Enforcement Letter UNKNOWN Enforcement - 2 438291002 NPDESWW 09/27/1999 Historical
373433 Admin Civil Liability None 2010 March Expediated MMP Offer Letter NPDESWW 03/11/2009 Historical
Total Enforcement Actions: 4
  
  
  
  
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: 05/16/2024
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
Back to Main Page  |  Back to Top of Page

Conditions of Use | Privacy Policy
Copyright © 2015 State of California

The Board is one of six boards, departments, and offices under
the umbrella of the California Environmental Protection Agency.
Cal/EPA | ARB | DPR | DTSC | OEHHA | SWRCB