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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
S603283 Davidon Homes Privately-Owned Business 1600 South Main Street Suite 150 Walnut Creek, CA 94596 925-945-8000 104 SAbbs@DavidonNewHomes.com
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
S817511 The Gallery Collection at Alamo Springs Contra Costa 2 Facility Discharger 06/13/2012 None
S853991 Andersen Ranch Napa 2 Facility Discharger 03/16/2017 None
S897431 Magee Preserve Contra Costa 2 Facility Discharger 08/19/2021 None
S921833 Scott Ranch Sonoma 2 Facility Discharger 04/26/2024 None
S640029 Tract 062845 Los Angeles 6B Facility Discharger 08/29/2006 None
S880774 Park Ridge Phases V VI & VII Contra Costa 5S Facility Discharger 03/20/2020 None
S928736 Western Meadows Napa 2 Facility Discharger 02/12/2025 None
S614153 Alamo Crest Contra Costa 2 Facility Discharger 11/07/2005 None
S805641 Subdivision 8846 Temp Grading Contra Costa 5S Facility Discharger 09/20/2010 None
S815124 Highlands of Los Gatos Santa Clara 2 Facility Discharger 02/14/2012 None
S849510 Park Ridge Phase 1 Contra Costa 5S Facility Discharger 09/01/2016 None
S865366 Park Ridge II & IV Contra Costa 5S Facility Discharger 07/02/2018 None
S918763 Vintage Farm Napa 2 Facility Discharger 01/09/2024 None
S863987 Woodbury Highlands Contra Costa 2 Facility Discharger 05/09/2018 None
S800039 Subdivision 8641 150 Hill Rd Contra Costa 2 Facility Discharger 09/23/2009 None
S829170 The Reserve at Eastridge Solano 2 Facility Discharger 04/30/2014 None
S886015 Oak Park Contra Costa 2 Facility Discharger 09/17/2020 None
S875702 Country Hills Road Contra Costa 5S Facility Discharger 09/10/2019 None
S647515 Tract 5200 Ventura 4 Facility Discharger 03/01/2007 None
S805635 Davidon Homes Contra Costa 5S Facility Discharger 09/20/2010 None
S875712 Park Ridge Phase III Contra Costa 5S Facility Discharger 09/09/2019 None
S915872 Western Meadows Napa 2 Facility Discharger 08/31/2023 None
S655261 Matadera Subdivision 8919 Contra Costa 2 Facility Discharger 08/03/2007 None
S842861 Wilder Subdivision 9224 Contra Costa 2 Facility Discharger 11/19/2015 None
S865120 Laruel Road Contra Costa 5S Facility Discharger 06/22/2018 None
Total Related Places: 25
  
  
  
  
Expand/Contract Related Parties
Related Parties
Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification
N/A Steven Abbs Contact Owner Contact N/A N/A N/A
N/A Don Chaiken Contact Owner Contact N/A N/A N/A
N/A Ryan Hatheway Contact Owner Contact N/A N/A N/A
N/A Jordan Figas Contact Owner Contact N/A N/A N/A
N/A Donald Chaiken Contact Owner Contact N/A N/A N/A
N/A Don Chaiken Contact Owner Contact N/A N/A N/A
N/A Steve Abbs Contact Owner Contact N/A N/A N/A
Total Related Parties: 7
  
  
  
  
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?
S581736 Construction 2 2 28C406773 Active CONSTW 2009-0009-DWQ 04/16/2025 None Discharger 02/12/2025 None None
S572803 Construction 2 2 49C404316 Active CONSTW 2009-0009-DWQ 07/03/2024 None Discharger 04/26/2024 None None
S569293 Construction 2 2 28C403061 Active CONSTW 2009-0009-DWQ 02/12/2024 None Discharger 01/09/2024 None None
S565642 Construction 2 2 28C402124 Active CONSTW 2009-0009-DWQ 09/06/2023 None Discharger 08/31/2023 None None
S540523 Construction 2 2 07C394992 Active CONSTW 2009-0009-DWQ 09/02/2021 None Discharger 08/19/2021 None None
S519283 Construction 5S 5S07C389891 Active CONSTW 2009-0009-DWQ 04/01/2020 None Discharger 03/20/2020 None None
S497619 Construction 2 2 07C383367 Active CONSTW 2009-0009-DWQ 05/15/2018 None Discharger 05/09/2018 None None
Total Regulatory Measures: 7
  
  
  
  
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
S418142 13267 Letter/Order None 4 56C345995 CONSTW 02/06/2015 Historical
S438758 1st Annual Report Notice of Non-Compliance None 5S07C389891 CONSTW 10/01/2020 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: 06/13/2025
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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