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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
19798 Hanson Aggregates Privately-Owned Business Po Box 580 Pleasanton, CA 94566 925-426-4051 None
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
234582 Kaiser Sand & Gravel Windsor#1 Sonoma 1 Sand and Gravel Mining Owner 05/26/1983 None
646825 Hanson Aggregates SF Pier 92 Sand Yard San Francisco 2 Sand and Gravel Mining None None None
231217 Hanson Aggregates, MARTINEZ Contra Costa 2 Facility Owner 08/24/1995 None
203213 4501 Tidewater Ave, Oakland Alameda 2 Sand and Gravel Mining Owner 02/17/1998 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
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?
142699 WDR 2 2 019216001 Historical NPDMINING 93-008 01/20/1993 None Discharger 01/20/1993 None N
142504 NPDES Permit 2 2 019216001 Historical NPDMINING R2-1998-0118 12/16/1998 09/01/2006 Discharger 12/16/1998 None N
142421 WDR 2 2 071112001 Historical WDR 96-055 04/17/1996 None Discharger 04/17/1996 None N
142266 NPDES Permit 2 2 386028001 Historical NPDMINING R2-1998-0062 07/15/1998 09/01/2006 Discharger 07/15/1998 None N
137032 WDR 1 1B83059OSON Historical WDRMINING 83-059 05/26/1983 09/10/2009 Discharger 05/26/1983 None N
Total Regulatory Measures: 5
  
  
  
  
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
377586 Admin Civil Liability R2-2011-0097 ACL for 4501 Tidewater NPDESWW 03/09/2012 Historical
252966 Admin Civil Liability R2-2004-0051 Enforcement - 2 386028001 NPDMINING 09/15/2004 Historical
242357 Admin Civil Liability R2-2002-0034 ACL R2-2002-0034 for Hanson Aggregates NPDMINING 05/22/2002 Historical
238368 Oral Communication UNKNOWN Enforcement - 2 386028001 NPDMINING 10/30/2001 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: 05/01/2026
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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