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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
47745 Unimin Corporation Privately-Owned Business 1300 Camino Diablo Road Byron, CA 94514 815-431-2216 None
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
269009 Unimin Mine Reclamation Contra Costa 5S Facility Owner 04/19/2005 None
269006 G3 Minerals, Byron Plant Contra Costa 5S Sand and Gravel Mining Owner 05/30/1980 10/12/2011
Total Related Places: 2
  
  
  
  
Expand/Contract Related Parties
Related Parties
Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification
Total Related Parties: 0
  
  
  
  
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?
140546 WDR 5S 5B072045001 Active WDRMINING R5-1992-0157 08/14/1992 None Discharger 08/14/1992 10/12/2011 Y
139461 WDR 5S 5B072045001 Historical WDR 80-066 05/30/1980 03/31/1994 Discharger 05/30/1980 None N
Total Regulatory Measures: 2
  
  
  
  
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
380845 13267 Letter None 13267 Letter 08/16/2011 for Unimin Corporation WDR 08/16/2011 Historical
231390 Staff Enforcement Letter None Enforcement - 5B072045001 WDR 08/22/2000 Historical
Total Enforcement Actions: 2
  
  
  
  
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: 05/02/2024
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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