Welcome to California
California Home
Welcome to California - images of Golden Gate Bridge, ocean sunset, waterfall, flowers, and city skyline California Home Welcome to the California Environmental Protection Agency
California Integrated Water Quality System Project (CIWQS)
   Party At-A-Glance Report

  
   [VIEW PRINTER FRIENDLY VERSION] [EXPORT THIS REPORT TO EXCEL]

  
  
  
  
  
General Information
Party ID Party Name Party Classification Mailing Address Work Phone Email/Website
S640596 Endsley Mariposa Plant LP Privately-Owned Business 1121 K Street Modesto, CA 95354 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
S870835 901 East Whitmore Site Stanislaus 5S Facility Discharger 03/07/2019 None
S845176 Mariposa 300K Warehouse Addition Stanislaus 5S Facility Discharger 03/15/2016 None
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
N/A Stephen Endsley Contact Owner Contact N/A N/A N/A
Total Related Parties: 1
  
  
  
  
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.
S895646 09/02/2025 SW - Failure to Obtain Permit Failure to obtain coverage under the 2022 CGP by 09/01/2025. Violation N Internal Report Mariposa 300K Warehouse Addition S470616 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
S455876 1st Annual Report Notice of Non-Compliance None 5S50C375731 CONSTW 07/15/2024 Active
S435790 2nd Annual Report Notice of Non-Compliance None 5S50C375731 CONSTW 12/10/2019 Active
S435369 1st Annual Report Notice of Non-Compliance None 5S50C375731 CONSTW 09/26/2019 Active
S447616 2nd Annual Report Notice of Non-Compliance None 5S50C375731 CONSTW 08/19/2022 Active
S460495 Notice of Violation None 5S50C375731 CONSTW 09/05/2025 Active
S425223 2nd Annual Report Notice of Non-Compliance None 5S50C375731 CONSTW 11/02/2016 Historical
S431675 2nd Annual Report Notice of Non-Compliance None 5S50C375731 CONSTW 11/09/2018 Active
S432059 1st Annual Report Notice of Non-Compliance None 5S50C375731 CONSTW 09/26/2018 Active
S445829 1st Annual Report Notice of Non-Compliance None 5S50C375731 CONSTW 10/01/2021 Active
S424841 1st Annual Report Notice of Non-Compliance None 5S50C375731 CONSTW 09/21/2016 Historical
Total Enforcement Actions: 10
  
  
  
  
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: 06/15/2026
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
Back to Main Page  |  Back to Top of Page

Conditions of Use | Privacy Policy
Copyright © 2024 State of California

The Board is one of six boards, departments, and offices under
the umbrella of the California Environmental Protection Agency.
Cal/EPA | ARB | DPR | DTSC | OEHHA | SWRCB