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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
S673205 Yoshen Corporation Privately-Owned Business 10015 Greenleaf Ave Santa Fe Springs, CA 90670 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
S898037 Yoshen Corporation Los Angeles 4 Facility Discharger 09/09/2021 None
Total Related Places: 1
  
  
  
  
Expand/Contract Related Parties
Related Parties
Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification
N/A Kin Tsay 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?
S541348 Industrial 4 4 19NEC010070 Active INDSTW 2014-0057-DWQ 09/29/2021 None Discharger 09/09/2021 None None
Total Regulatory Measures: 1
  
  
  
  
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.
S899651 10/02/2025 SW - Failure to meet NEC criteria Failure to re-certify the NEC for 2025-2026 reporting year. Violation N Report Yoshen Corporation S541348 2014-0057-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
S465135 Notice of Violation None 4 19NEC010070 INDSTW 10/17/2025 Active
S452264 Notice of Violation None 4 19NEC010070 INDSTW 12/11/2023 Active
Total Enforcement Actions: 2
  
  
  
  
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: 04/13/2026
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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