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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
S623964 Costco Wholesale Corporation Privately-Owned Business 999 Lake Drive Issaquah, CA 98027 425-427-7540 kkatz@costco.com
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
S895979 Costco Hayward Fuel Facility Expansion Alameda 2 Facility Discharger 05/28/2020 None
S895315 Costco Hayward Business Center Fuel Facility Alameda 2 Facility Discharger 04/12/2018 None
S893920 San Bernardino Costco Gas OSR San Bernardino 8 Facility Discharger 05/17/2021 None
S893814 Costco Novato Marin 2 Facility Discharger 05/12/2021 None
S892052 Danville San Ramon Costco Gas Station Contra Costa 2 Facility Discharger 03/23/2021 None
S883513 Turlock Parking Addition Stanislaus 5S Facility Discharger 06/22/2020 None
S877798 San Leandro Costco Parking Expansion Alameda 2 Facility Discharger 12/11/2019 None
S869001 El Camino Costco San Mateo 2 Facility Discharger 12/05/2018 None
S868235 Costco Santee San Diego 9 Facility Discharger 11/02/2018 None
S866351 Oxnard CA Fuel Facility OSR Ventura 4 Facility Discharger 08/16/2018 None
S864495 El Camino San Mateo 2 Facility Discharger 05/25/2018 None
S841606 Rohnert Park Costco Sonoma 1 Facility Discharger 10/02/2015 None
S834521 Costco Temecula Building Additions Riverside 9 Facility Discharger 03/24/2015 None
S833824 Roseville Costco Fueling Station Placer 5S Facility Discharger 02/11/2015 None
S829189 Costco Rancho Del Rey Fueling Station San Diego 9 Facility Discharger 04/30/2014 None
S829073 Signal Hill Costco Fuel Facility Los Angeles 4 Facility Discharger 04/24/2014 None
S824277 Costco Carmel Mountain Gas Station Addition San Diego 9 Facility Discharger 06/28/2013 None
Total Related Places: 17
  
  
  
  
Expand/Contract Related Parties
Related Parties
Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification
N/A Kayleen Burnett Contact Owner Contact N/A N/A N/A
N/A Kayleen Burnet Contact Owner Contact N/A N/A N/A
N/A Jenifer Murillo Contact Owner Contact N/A N/A N/A
N/A Kim Katz Contact Owner Contact N/A N/A N/A
N/A Therese Garcia Contact Owner Contact N/A N/A N/A
Total Related Parties: 5
  
  
  
  
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?
Total Regulatory Measures: 0
  
  
  
  
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.
S895890 09/02/2025 SW - Failure to Obtain Permit Failure to obtain coverage under the 2022 CGP by 09/01/2025. Violation N Internal Report Turlock Parking Addition S522521 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
S460739 Notice of Violation None 5S50C390784 CONSTW 09/05/2025 Active
S458281 2nd Annual Report Notice of Non-Compliance None 5S50C390784 CONSTW 12/20/2024 Active
S456705 1st Annual Report Notice of Non-Compliance None 5S50C390784 CONSTW 10/08/2024 Active
S456296 2nd Annual Report Notice of Non-Compliance None 5S50C390784 CONSTW 09/17/2024 Active
S455901 1st Annual Report Notice of Non-Compliance None 5S50C390784 CONSTW 07/15/2024 Active
S445850 1st Annual Report Notice of Non-Compliance None 5S50C390784 CONSTW 10/01/2021 Active
S444253 Notice of Non-Compliance for Non-Filers None 2 01C388972 CONSTW 11/09/2021 Active
S436603 Notice of Violation None 4 56C384676 CONSTW 03/06/2020 Historical
Total Enforcement Actions: 8
  
  
  
  
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: 10/17/2025
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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