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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
S647385 Costco Wholesale Corporation Privately-Owned Business 999 Lake Drive Issaquah, WA 98027 N/A N/A
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
S937406 Tracy Hom Costco Wholesale San Joaquin 5S Facility Discharger 10/01/2025 None
S907991 Tracy Hom Costco Wholesale San Joaquin 5S Facility Discharger 10/05/2022 None
S856146 Tracy Depot Patterson Pass Business Park San Joaquin 5S Facility Discharger 06/09/2017 None
S912651 Tracy Basin Underground Storm Drainage and Parking Lot Remodel San Joaquin 5S Facility Discharger 05/03/2023 None
S909446 Schulte Rd SS Line Lammers Rd Det Basin LW11 San Joaquin 5S Facility Discharger 12/14/2022 None
S935102 Offsites New Depot Hom Property Trust San Joaquin 5S Facility Discharger 08/14/2025 None
S887466 Costco Trailer Parking San Joaquin 5S Facility Discharger 11/02/2020 None
S930551 Costco Depot Sacramento 5S Facility Discharger 04/21/2025 None
Total Related Places: 8
  
  
  
  
Expand/Contract Related Parties
Related Parties
Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification
N/A Peter Kahn Contact Owner Contact N/A N/A N/A
N/A Christine Lasley Contact Owner Contact N/A N/A N/A
Total Related Parties: 2
  
  
  
  
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?
S591965 Construction 5S 5S39C409962 Active CONSTW 2009-0009-DWQ 10/07/2025 None Discharger 10/01/2025 None None
S588945 Construction 5S 5S39C408929 Active CONSTW 2009-0009-DWQ 08/29/2025 None Discharger 08/14/2025 None None
S583888 Construction 5S 5S34C406946 Active CONSTW 2009-0009-DWQ 05/05/2025 None Discharger 04/21/2025 None None
Total Regulatory Measures: 3
  
  
  
  
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.
S896335 09/02/2025 SW - Failure to Obtain Permit Failure to obtain coverage under the 2022 CGP by 09/01/2025. Violation N Internal Report Tracy Hom Costco Wholesale S554655 2009-0009-DWQ Y
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: 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
S461184 Notice of Violation None 5S39C399568 CONSTW 09/05/2025 Historical
S455856 2nd Annual Report Notice of Non-Compliance None 5S39C399568 CONSTW 09/17/2024 Active
S455855 1st Annual Report Notice of Non-Compliance None 5S39C399568 CONSTW 07/15/2024 Active
S445811 1st Annual Report Notice of Non-Compliance None 5S39C392079 CONSTW 10/01/2021 Active
S445757 1st Annual Report Notice of Non-Compliance None 5S39C380250 CONSTW 10/01/2021 Active
S434365 1st Annual Report Notice of Non-Compliance None 5S39C380250 CONSTW 09/26/2019 Active
S432035 1st Annual Report Notice of Non-Compliance None 5S39C380250 CONSTW 09/26/2018 Historical
Total Enforcement Actions: 7
  
  
  
  
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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