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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
S606952 Contra Costa County Public Works Department County Agency 255 Glacier Drive Martinez, CA 94553 N/A N/A
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
S940036 Martinez Juvenile Hall Demolition Contra Costa 2 Facility Discharger 01/14/2026 None
S939182 East County Service Center Contra Costa 5S Facility Discharger 12/03/2025 None
S936185 WRTH and WARC Contra Costa 2 Facility Discharger 09/02/2025 None
S932922 Wildcat Canyon Road Slope Failure Repair Contra Costa 2 Facility Discharger 07/02/2025 None
S913588 WRTH facility Contra Costa 2 Facility Discharger 06/14/2023 None
S912445 Marsh Creek Road Bridges Replacement Bridge 520 Contra Costa 5S Facility Discharger 04/26/2023 None
S912437 Marsh Creek Road Bridges Replacement Bridge 519 Contra Costa 5S Facility Discharger 04/26/2023 None
S910750 Danville Boulevard Orchard Court Complete Streets Improvement Project Contra Costa 2 Facility Discharger 02/13/2023 None
S904393 Byron Highway at Byer Road Safety Improvement Project Contra Costa 5S Facility Discharger 05/09/2022 None
S900212 Contra Costa County Administration Building Demo & Redevelopment Project Contra Costa 2 Facility Discharger 11/29/2021 None
S896119 Fred Jackson Way First Mile Last Mile Connection Project Contra Costa 2 Facility Discharger 07/12/2021 None
S893385 Marsh Drive Bridge Replacement over Walnut Creek Contra Costa 2 Facility Discharger 04/28/2021 None
S891670 Urban Air Mobility Project Contra Costa 5S Facility Discharger 03/11/2021 None
S891004 Bailey Rd SR4 Interchange Pedestrian & Bicycle Improvement Contra Costa 2 Facility Discharger 02/22/2021 None
S890945 Bay Point Fire Station 86 Contra Costa 2 Facility Discharger 02/11/2021 None
S890412 Landscape Improvements for Walden Green 1 Walden Green 2 Iron Horse Trail Corridor Contra Costa 2 Facility Discharger 02/03/2021 None
S885791 Oak Park Properties Contra Costa 2 Facility Discharger 09/11/2020 None
S880133 Buchanan Airport Runway 14L 32R Rehabilitation Contra Costa 2 Facility Discharger 03/03/2020 None
S872646 Camino Tassajara Bike Lane Gap Closure Contra Costa 2 Facility Discharger 05/08/2019 None
S872264 Kirker Pass Road Northbound Truck Climbing Lane Contra Costa 2 Facility Discharger 04/07/2015 None
S863681 Contra Costa County EOC Contra Costa 2 Facility Discharger 04/30/2018 None
S863671 Contra Costa County Administration Building Contra Costa 2 Facility Discharger 05/01/2018 None
S862563 Marsh Creek Bridge Replacement Contra Costa 5S Facility Discharger 03/20/2018 None
S861399 Contra Costa County Admin Building and Surface Parking Lot Contra Costa 2 Facility Discharger 01/17/2018 None
S855521 Balfour Road Shoulder Widening Contra Costa 5S Facility Discharger 05/18/2017 None
S855519 Alhambra Valley Road Safety Improvements (Rancho La Boca) Contra Costa 2 Facility Discharger 05/18/2017 None
S855518 Byron Highway and Camino Diablo Intersection Improvements Contra Costa 5S Facility Discharger 05/18/2017 None
S851604 Canal Road Bridge Replacement Contra Costa 2 Facility Discharger 12/01/2016 None
S849919 Buchannan Field Airport-Taxiway Echo and Kilo Pavement Improvements Contra Costa 2 Facility Discharger 09/19/2016 None
S846954 Canal Road Sidewalk and Bike Lanes Project Contra Costa 2 Facility Discharger 05/31/2016 None
S846877 Camino Tassajara No of Windemere Contra Costa 2 Facility Discharger 05/26/2016 None
S842866 Marsh Creek Road Safety Improvment Project 2 Miles West of Deer Valley Road Contra Costa 5S Facility Discharger 11/19/2015 None
S837627 Alhambra Valley Road Safety Improvements Contra Costa 2 Facility Discharger 07/15/2015 None
S836166 Marsh Creek Road Safety Improvement Project West of Deer Valley Road Contra Costa 5S Facility Discharger 06/18/2015 None
S835667 Orwood Bridge Replacement Project Contra Costa 5S Facility Discharger 05/27/2015 None
S832874 San Pablo Dam Road Walkability Project Contra Costa 2 Facility Discharger 06/16/2014 None
S829703 Marsh Creek Detention Center Bridge Replacement Contra Costa 5S Facility Discharger 04/29/2014 None
S829149 Pacifica Avenue Sidewalk Project Contra Costa 2 Facility Discharger 04/29/2014 None
S829021 Marsh Creek Road Safety Improvements 1 Mile East of Russlemann Park Road Contra Costa 2 Facility Discharger 04/09/2014 None
S828739 Camino Tassajara Blackhawk to Finley Contra Costa 2 Facility Discharger 04/07/2014 None
S821983 Deer Valley Shoulder Widening Project San Joaquin 5S Facility Discharger 02/13/2013 None
S821980 Marsh Creek Shoulder Widening San Joaquin 5S Facility Discharger 03/04/2013 None
S821877 Upper Sand Creek Basin Expansion Contra Costa 5S Facility Discharger 03/06/2013 None
S821745 Tree Restoration at West County Detention Center Facility Contra Costa 2 Facility Discharger 02/27/2013 None
S816718 Viera Avenue Bicycle Lanes Project Contra Costa 5S Facility Discharger 03/28/2012 None
S816717 Deer Valley Road Safety Improvements South of Chadbourne Road Project Contra Costa 5S Facility Discharger 05/08/2012 None
S815911 Marsh Creek SHoulder Widening Contra Costa 5S Facility Discharger 03/28/2012 None
S813386 Montalvin Manor Pedestrian and Access Improvement Project Contra Costa 2 Facility Discharger 11/01/2011 None
S810193 Camino Tassajara Shoulder Widening Project Contra Costa 2 Facility Discharger 06/01/2011 None
S809841 Montalvin Manor Pedestrian and Access Improvements Contra Costa 2 Facility Discharger 05/12/2011 None
S809728 Byron Highway Shoulder Widening Contra Costa 5S Facility Discharger 05/09/2011 None
S808078 Alhambra Valley Road Safety and Bicycle Facility Improvements Contra Costa 2 Facility Discharger 02/23/2011 None
S807221 Clyde Pedestrian Path Contra Costa 2 Facility Discharger 01/04/2011 None
S807002 Vasco Road Camino Diablo Intersection Improvements Project Contra Costa 5S Facility Discharger 12/14/2010 None
S803811 Bethel Island Road Bridge Replacement Contra Costa 5S Facility Discharger 06/23/2010 None
S802873 Vasco Rd Saftey Improvements Contra Costa 5S Facility Discharger 04/23/2010 None
S738640 Iron Horse Trail Pedestrian Overcrossing Contra Costa 2 Facility Discharger 06/08/2009 None
S636853 Parker Avenue Reconstruction Contra Costa 2 Facility Discharger 07/07/2006 None
Total Related Places: 58
  
  
  
  
Expand/Contract Related Parties
Related Parties
Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification
N/A Julia Bueren Contact Owner Contact N/A N/A N/A
N/A Laura Cremin Contact Owner Contact N/A N/A N/A
N/A Steve Jordan Contact Owner Contact N/A N/A N/A
N/A Kimani Birden Contact Owner Contact N/A N/A N/A
N/A Kimani Birden Contact Owner Contact N/A N/A N/A
N/A Sandeep Kajla Contact Owner Contact N/A N/A N/A
N/A Adele Ho Contact Owner Contact N/A N/A N/A
N/A Jenna Caldwell Contact Owner Contact N/A N/A N/A
N/A Mike Carlson Contact Owner Contact N/A N/A N/A
N/A Ave Brown Contact Owner Contact N/A N/A N/A
N/A Alex Li Contact Owner Contact N/A N/A N/A
N/A Claudia Gemberling Contact Owner Contact N/A N/A N/A
N/A Neil Leary Contact Owner Contact N/A N/A N/A
N/A Brian Balbas Contact Owner Contact N/A N/A N/A
N/A Slava Gospodchikov Contact Owner Contact N/A N/A N/A
N/A Neil Leary Contact Owner Contact N/A N/A N/A
N/A Slava Gospodchikov Contact Owner Contact N/A N/A N/A
N/A Warren Lai Contact Owner Contact N/A N/A N/A
N/A Rob Tavenier Contact Owner Contact N/A N/A N/A
N/A Claudia Gemberling Contact Owner Contact N/A N/A N/A
N/A Hillary Heard Contact Owner Contact N/A N/A N/A
N/A Adelina Huerta Contact Owner Contact N/A N/A N/A
N/A Rob Tavenier Contact Owner Contact N/A N/A N/A
Total Related Parties: 23
  
  
  
  
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?
S595118 Construction 2 2 07C411327 Active CONSTW 2009-0009-DWQ 02/18/2026 None Discharger 01/14/2026 None None
S593964 Construction 5S 5S07C410999 Active CONSTW 2009-0009-DWQ 01/09/2026 None Discharger 12/03/2025 None None
S590512 Construction 2 2 07C409649 Active CONSTW 2009-0009-DWQ 09/24/2025 None Discharger 09/02/2025 None None
Total Regulatory Measures: 3
  
  
  
  
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.
S894596 09/02/2025 SW - Failure to Obtain Permit Failure to obtain coverage under the 2022 CGP by 09/01/2025. Violation N Internal Report Upper Sand Creek Basin Expansion S435581 2009-0009-DWQ Y
S894491 09/02/2025 SW - Failure to Obtain Permit Failure to obtain coverage under the 2022 CGP by 09/01/2025. Violation N Internal Report WRTH facility S562421 2009-0009-DWQ Y
S891511 09/01/2024 SW - Late Report Late Annual Report Violation N Report Urban Air Mobility Project S533254 2009-0009-DWQ Y
S880871 09/01/2021 SW - Late Report Late 2020-2021 Annual Report Violation N Report Upper Sand Creek Basin Expansion S435581 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: 4
*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
S459445 Notice of Violation None 5S07C366192 CONSTW 09/05/2025 Active
S459340 Notice of Violation None 2 07C401538 CONSTW 09/05/2025 Active
S456412 1st Annual Report Notice of Non-Compliance None 5S07C397147 CONSTW 10/08/2024 Active
S444792 1st Annual Report Notice of Non-Compliance None 5S07C366192 CONSTW 10/01/2021 Active
S438740 1st Annual Report Notice of Non-Compliance None 5S07C366192 CONSTW 10/01/2020 Active
S435320 1st Annual Report Notice of Non-Compliance None 5S07C380357 CONSTW 09/26/2019 Active
S426884 Verbal Communication None 5S07C380357 CONSTW 09/08/2017 Historical
S421396 1st Annual Report Notice of Non-Compliance None 5S07C366192 CONSTW 10/30/2015 Historical
S417258 1st Annual Report Notice of Non-Compliance None 5S07C366192 CONSTW 10/03/2014 Historical
Total Enforcement Actions: 9
  
  
  
  
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: 05/20/2026
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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