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 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 null S935102 Offsites New Depot Hom Property Trust San Joaquin 5S Facility Discharger 08/14/2025 null S930551 Costco Depot Sacramento 5S Facility Discharger 04/21/2025 null S912651 Tracy Basin Underground Storm Drainage and Parking Lot Remodel San Joaquin 5S Facility Discharger 05/03/2023 null S909446 Schulte Rd SS Line Lammers Rd Det Basin LW11 San Joaquin 5S Facility Discharger 12/14/2022 null S907991 Tracy Hom Costco Wholesale San Joaquin 5S Facility Discharger 10/05/2022 null S887466 Costco Trailer Parking San Joaquin 5S Facility Discharger 11/02/2020 null S856146 Tracy Depot Patterson Pass Business Park San Joaquin 5S Facility Discharger 06/09/2017 null Related Parties Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification N/A Christine Lasley Contact Owner Contact null null null N/A Peter Kahn Contact Owner Contact null null null Regulatory Measures(non-enforcement) Reg. Measure ID Regulatory Measure Type Region WDID Title Status Program Order No. RM Effective Date RM Termination Date Relationship Relationship Start Date Relationship End Date S591965 Construction 5S 5S39C409962 Notice Of Intent New Application Active CONSTW 2009-0009-DWQ 10/07/2025 null Discharger 10/01/2025 null S588945 Construction 5S 5S39C408929 Notice Of Intent New Application Active CONSTW 2009-0009-DWQ 08/29/2025 null Discharger 08/14/2025 null S583888 Construction 5S 5S34C406946 Notice Of Intent New Application Active CONSTW 2009-0009-DWQ 05/05/2025 null Discharger 04/21/2025 null Violations within the past calendar 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 Enforcement Actions Enforcement ID Enforcement Type Enf. Order No. Title Program Effective Date Status S461184 Notice of Violation null 5S39C399568 CONSTW 09/05/2025 Historical S455856 2nd Annual Report Notice of Non-Compliance null 5S39C399568 CONSTW 09/17/2024 Active S455855 1st Annual Report Notice of Non-Compliance null 5S39C399568 CONSTW 07/15/2024 Active S445757 1st Annual Report Notice of Non-Compliance null 5S39C380250 CONSTW 10/01/2021 Active S445811 1st Annual Report Notice of Non-Compliance null 5S39C392079 CONSTW 10/01/2021 Active S434365 1st Annual Report Notice of Non-Compliance null 5S39C380250 CONSTW 09/26/2019 Active S432035 1st Annual Report Notice of Non-Compliance null 5S39C380250 CONSTW 09/26/2018 Historical Regulatory Measures linked to Related Parties Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status