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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
41784 Spawn Mate Inc Privately-Owned Business Po Box 1551 Arroyo Grande, CA 93421 805-473-7250 None
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
206425 Arroyo Grande Mushroom Farm San Luis Obispo 3 Food Processing NEC Owner 07/10/1992 None
241935 Monterey Mushroom Farms (Hall Road) Monterey 3 Food Processing NEC Owner and Operator 12/27/1986 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
Total Related Parties: 0
  
  
  
  
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?
147673 WDR 3 3 272081001 Active WDRINDFP 00-038 05/19/2000 None Discharger 08/11/2017 None N
147433 WDR 3 3 402036001 Active WDRINDFP 92-069 07/10/1992 None Discharger 07/10/1992 None N
Total Regulatory Measures: 2
  
  
  
  
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.
1148518 07/31/2025 Late Report Failure to submit monitoring report for Q2 2025. Violation None Report Arroyo Grande Mushroom Farm 147433 92-069 Y
1148517 05/01/2025 Late Report Failure to submit quarterly monitoring report for Q1 2025. Violation N Report Arroyo Grande Mushroom Farm 147433 92-069 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: 2
*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
463044 Notice of Violation None NOV 10/24/2025 for Spawn Mate Inc Arroyo Grande Mushroom Farm WDRINDFP 10/24/2025 Historical
416624 Notice of Violation None NOV 10/02/2017 for Spawn Mate Inc Hall Rd/Royal Oaks Mushroom Farms WDRINDFP 10/02/2017 Active
410866 Notice of Violation None NOV 12/02/2016 for Spawn Mate Inc Arroyo Grande Mushroom Farm WDRINDFP 12/02/2016 Historical
340962 Staff Enforcement Letter None SEL for SPAWN MATE'S Arroyo Grande Mushroom Farm WDR 01/25/2008 Historical
326462 Notice of Violation None Notice of Violation for Arroyo Grande Mushroom Farm WDR 03/22/2007 Historical
253517 Staff Enforcement Letter UNKNOWN Enforcement - 3 402036001 WDR 09/30/2004 Historical
252420 Staff Enforcement Letter UNKNOWN Enforcement - 3 402036001 WDR 04/09/2004 Historical
Total Enforcement Actions: 7
  
  
  
  
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: 04/28/2026
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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