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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
550078 Alameda County Flood Control & Water Conservation District, Zone 7 County Agency 100 North Canyons Parkway Livermore, CA 94551 925-454-5085(+) None
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
867678 2020 Routine Bank Repairs Alameda 2 Dredge/Fill Site Owner 06/29/2020 None
834210 Hopyard Pipeline Leak Repair Alameda 2 Dredge/Fill Site Owner 04/03/2017 None
825490 Channel Maintenance Priority Projects 2016 (Sites 1-9) Alameda 2 Dredge/Fill Site Owner 06/16/2016 None
897804 Vineyard Pipeline Emergency Repair Alameda 2 Dredge/Fill Site Owner 12/04/2024 None
896456 Zone 7 Water Agency - 2023 Emergency Repairs Project Alameda 2 Dredge/Fill Site Owner 09/12/2024 None
839246 2017 Emergency Projects - 5 Critical Bank Repairs Alameda 2 Dredge/Fill Site Owner 08/25/2017 None
864685 Zone 7 Phase 3 Channel Bank Repairs Alameda 2 Dredge/Fill Site Owner 02/07/2020 None
901210 2023 Storm Damage Repairs ¿ Phase I Project Alameda 2 Dredge/Fill Site Owner 05/13/2025 None
816330 Stream Maintenance Priority Projects 2015 Alameda 2 Dredge/Fill Site Owner 07/03/2015 None
823834 Zone 7 WS Alameda 2 Utility Structure Owner and Operator 04/14/2016 None
836278 Stabilization Of Arroyo De La Laguna (ADLL) At 7852 Foothill Road Alameda 2 Dredge/Fill Site Owner 06/30/2017 None
880672 Zone 7 Water Agency 2022 Routine Repairs Project Alameda 2 Dredge/Fill Site Owner 04/18/2022 None
826631 Channel Maintenance Priority Projects 2016 (Site 10) Alameda 2 Dredge/Fill Site Owner 07/26/2016 None
Total Related Places: 13
  
  
  
  
Expand/Contract Related Parties
Related Parties
Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification
639324 Mona Olmstead Person Data Submitter 05/08/2023 None None
563251 John Koltz Person Legally Responsible Official 04/03/2017 None None
551964 Joe Seto Person Legally Responsible Official 07/03/2015 None None
550079 Jill Duerig Person Legally Responsible Official 02/11/2015 None None
541554 Elke Rank Person Legally Responsible Official 02/07/2020 None None
648302 Chris Hentz Person Legally Responsible Official 12/04/2024 None None
610570 Carol Mahoney Person Legally Responsible Official 06/29/2020 None None
639323 Athena Watson Person Legally Responsible Official 05/08/2023 None None
Total Related Parties: 8
  
  
  
  
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?
460998 401 Certification 2 2 CW460998 Active CERFILLEXC None 08/25/2025 None Discharger 05/13/2025 None N
459319 Enrollee - 401 Certification 2 2 CW459319 Active CERFILLEXC 2024-0085-DWQ 01/29/2025 None Discharger 12/04/2024 None N
458396 401 Certification 2 2 CW458396 Active CERFILLEXC None 09/16/2025 None Discharger 09/12/2024 None N
438891 401 Certification 2 2 CW438891 Active CERFILLEXC None 09/14/2021 None Discharger 06/29/2020 None N
436672 401 Certification 2 2 CW436672 Active CERFILLEXC None 09/24/2020 None Discharger 02/07/2020 None N
415958 401 Certification 2 2 CW415958 Active CERFILLEXC None 04/05/2018 None Discharger 08/25/2017 None N
414058 401 Certification 2 2 CW414058 Active CERFILLEXC None 07/26/2017 None Discharger 06/30/2017 None N
412506 Enrollee - 401 Certification SB 2 CW412506 Historical CERFILLEXC SB17001GN 05/10/2017 05/03/2018 Discharger 04/03/2017 None N
406915 401 Certification 2 2 CW406915 Active CERFILLEXC None 09/27/2016 None Discharger 06/16/2016 None N
405696 Enrollee - NPDES 2 4DW0800 Active NPDNONMUNIPRCS 2014-0194-DWQ 04/08/2016 None Discharger 04/14/2016 None N
401898 401 Certification 2 2 CW401898 Historical CERFILLEXC None 10/05/2015 01/26/2021 Discharger 07/03/2015 None N
Total Regulatory Measures: 11
  
  
  
  
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.
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: 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
Total Regulatory Measures linked to Related Parties: 0
  
  
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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