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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
S928736 Western Meadows Napa 2 Facility Discharger 02/12/2025 None
S921833 Scott Ranch Sonoma 2 Facility Discharger 04/26/2024 None
S918763 Vintage Farm Napa 2 Facility Discharger 01/09/2024 None
S915872 Western Meadows Napa 2 Facility Discharger 08/31/2023 None
S897431 Magee Preserve Contra Costa 2 Facility Discharger 08/19/2021 None
S886015 Oak Park Contra Costa 2 Facility Discharger 09/17/2020 None
S880774 Park Ridge Phases V VI & VII Contra Costa 5S Facility Discharger 03/20/2020 None
S875712 Park Ridge Phase III Contra Costa 5S Facility Discharger 09/09/2019 None
S875702 Country Hills Road Contra Costa 5S Facility Discharger 09/10/2019 None
S865366 Park Ridge II & IV Contra Costa 5S Facility Discharger 07/02/2018 None
S865120 Laruel Road Contra Costa 5S Facility Discharger 06/22/2018 None
S863987 Woodbury Highlands Contra Costa 2 Facility Discharger 05/09/2018 None
S853991 Andersen Ranch Napa 2 Facility Discharger 03/16/2017 None
S849510 Park Ridge Phase 1 Contra Costa 5S Facility Discharger 09/01/2016 None
S842861 Wilder Subdivision 9224 Contra Costa 2 Facility Discharger 11/19/2015 None
S829170 The Reserve at Eastridge Solano 2 Facility Discharger 04/30/2014 None
S817511 The Gallery Collection at Alamo Springs Contra Costa 2 Facility Discharger 06/13/2012 None
S815124 Highlands of Los Gatos Santa Clara 2 Facility Discharger 02/14/2012 None
S805641 Subdivision 8846 Temp Grading Contra Costa 5S Facility Discharger 09/20/2010 None
S805635 Davidon Homes Contra Costa 5S Facility Discharger 09/20/2010 None
S800039 Subdivision 8641 150 Hill Rd Contra Costa 2 Facility Discharger 09/23/2009 None
S655261 Matadera Subdivision 8919 Contra Costa 2 Facility Discharger 08/03/2007 None
S647515 Tract 5200 Ventura 4 Facility Discharger 03/01/2007 None
S640029 Tract 062845 Los Angeles 6B Facility Discharger 08/29/2006 None
S614153 Alamo Crest Contra Costa 2 Facility Discharger 11/07/2005 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 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.
S874948 09/01/2020 SW - Late Report Late 2019-2020 Annual Report Violation N Report Park Ridge Phases V VI & VII S519283 2009-0009-DWQ Y
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: 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
S438758 1st Annual Report Notice of Non-Compliance None 5S07C389891 CONSTW 10/01/2020 Active
S418142 13267 Letter/Order None 4 56C345995 CONSTW 02/06/2015 Historical
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: 06/20/2025
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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