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   Party At-A-Glance Report

  
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General Information
Party ID Party Name Party Classification Mailing Address Work Phone Email/Website
81917 Ronald Pietersma Po Box 2500 Chino, CA 91708 909-627-2100 rcpietersma@aol.com
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
Total Related Places: 0
  
  
  
  
Expand/Contract Related Parties
Related Parties
Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification
613078 Legend Dairy Farms Organization Legally Responsible Official 09/24/2020 None Privately-Individual
34376 Ronald Pietersma Organization Legally Responsible Official 08/23/1993 None Privately-Owned Business
25763 Lekkerkerker, Walter Organization Legally Responsible Official 08/08/1996 None Privately-Owned Business
Total Related Parties: 3
  
  
  
  
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 five years
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.
Report currently showing last five years of violations. Click here to return to viewing one year of violations. Refer to the Interactive Violation Report for more data.
Total Violations: 0
*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
Total Enforcement Actions: 0
  
  
  
  
Expand/Contract Enforcement Actions
Regulatory Measures linked to Related Parties
Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status
455682 Ronald Pietersma Enrollee - NPDES ANIWSTCOWS 05/16/2024 Active
453931 Ronald Pietersma Enrollee - NPDES ANIWSTCOWS 01/11/2024 Active
453930 Ronald Pietersma Enrollee - NPDES ANIWSTCOWS 01/11/2024 Active
453929 Ronald Pietersma Enrollee - NPDES ANIWSTCOWS 10/28/2024 Active
451026 Ronald Pietersma Enrollee - NPDES ANIWSTCOWS 01/11/2024 Active
451012 Ronald Pietersma Enrollee - NPDES ANIWSTCOWS 01/11/2024 Active
451011 Ronald Pietersma Enrollee - NPDES ANIWSTCOWS 01/11/2024 Active
447460 Ronald Pietersma Enrollee - NPDES ANIWSTCOWS 01/28/2022 Active
442023 Ronald Pietersma Enrollee - NPDES ANIWSTCOWS 02/26/2021 Historical
440565 Legend Dairy Farms Enrollee - NPDES ANIWSTCOWS 10/07/2020 Active
377718 Ronald Pietersma Enrollee ANIWSTCOWS 03/01/2011 Historical
372890 Ronald Pietersma Enrollee - NPDES ANIWSTCOWS 02/01/2010 Historical
333400 Ronald Pietersma Enrollee ANIWSTCOWS 01/03/2008 Historical
301923 Ronald Pietersma Enrollee - NPDES ANIWSTCOWS 06/30/2006 Historical
301921 Ronald Pietersma Enrollee - NPDES ANIWSTCOWS 06/16/2006 Historical
301913 Ronald Pietersma Enrollee ANIWSTCOWS 06/16/2006 Historical
259960 Lekkerkerker, Walter Letter NPDESWW None Historical
259959 Lekkerkerker, Walter Letter NPDESWW None Historical
211883 Ronald Pietersma Enrollee ANIWSTCOWS 05/25/2005 Historical
211679 Lekkerkerker, Walter Enrollee ANIWSTCOWS 10/15/1975 Historical
209464 Ronald Pietersma Enrollee ANIWSTCOWS 09/15/2000 Historical
209415 Ronald Pietersma Enrollee ANIWSTCOWS 08/09/1985 Historical
138777 Ronald Pietersma NPDES Permit ANIWSTCOWS 08/09/1985 Historical
136674 Lekkerkerker, Walter WDR ANIWSTCOWS 10/15/1975 Historical
Total Regulatory Measures linked to Related Parties: 24
  
  
The current report was generated with data as of: 10/24/2025
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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