General Information Party ID Party Name Party Classification Mailing Address Work Phone Email/Website S606713 East Bay Municipal Utility District Construction Division Privately-Owned Business PO Box 24055 Oakland, CA 94623 N/A N/A Related Places Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date S836978 Pardee Recreation Area RV Park Improvements Amador 5S Facility Discharger 07/01/2015 null S936097 MOKELUMNE AQUEDUCT NO 2 RELINGING PHASE 2 San Joaquin 5S Facility Discharger 08/29/2025 null S904732 Mokelumne Aqueduct No 2 Relining Phase 1 San Joaquin 5S Facility Discharger 05/23/2022 null S884422 Camanche Water Transmission Pipeline Phase 2 Amador 5S Facility Discharger 07/24/2020 null S807559 San Ramon Valley Recycled Water Project Ph 2B Alcosta Blvd Contra Costa 2 Facility Discharger 01/25/2011 null S858750 South Reservoir Replacement Alameda 2 Facility Discharger 09/12/2017 null S887085 Derby Reservoir Rehabilitation Contra Costa 2 Facility Discharger 10/20/2020 null S876308 Bayfair Pumping Plant Peralta Regulator Replacment Alameda 2 Facility Discharger 10/02/2019 null S888514 Derby Reservoir Rehabilitation Contra Costa 2 Facility Discharger 12/08/2020 null S913432 Upper San Leandro Water Treatment Plant Alameda 2 Facility Discharger 06/07/2023 null S904260 Orinda Lafayette Walnut Creek EBMUD Treatment Plants Contra Costa 2 Facility Discharger 05/03/2022 null S927042 Orinda Westside Pumping Plant Contra Costa 2 Facility Discharger 12/02/2024 null S803846 Highland Reservoir Specification 1991 Contra Costa 2 Facility Discharger 06/23/2010 null S905487 Orinda Water Treatment Plant Chemical Systems Safety Improvements Project Contra Costa 2 Facility Discharger 06/23/2022 null S878703 Maloney Pumping Plant and Sobrante Water Treatment Plant Contra Costa 2 Facility Discharger 01/21/2020 null S904984 Happy Valley and Sunnyside Pumping Plants and Happy Valley Pipeline Ph 2 Improvements Contra Costa 2 Facility Discharger 06/02/2022 null S896851 Moraga Creek Flood & Erosion Control Contra Costa 2 Facility Discharger 08/04/2021 null S929071 Carter and Arroyo Reservoirs Replacement Contra Costa 2 Facility Discharger 02/25/2025 null S933144 Orinda Water Treatment Plant Chemical Systems Safety Improvements Project Contra Costa 2 Facility Discharger 07/09/2025 null S815675 Estates Reservoir Alameda 2 Facility Discharger 03/15/2012 null S904758 Briones Outlet Tower Seismic Upgrade Contra Costa 2 Facility Discharger 05/24/2022 null S806288 Schapiro Reservoir Replacement Contra Costa 2 Facility Discharger 10/29/2010 null S826393 Dingee Pipeline and Claremont Center Aqueducts Replacements Alameda 2 Facility Discharger 10/23/2013 null S837408 San Ramon Valley Recycled Water Pipelines Contra Costa 2 Facility Discharger 07/09/2015 null S877098 Birch Reservoirs Rehabilitation Contra Costa 2 Facility Discharger 11/05/2019 null S913430 EBMUD Projects Sobrante Water Treatment Plant Contra Costa 2 Facility Discharger 06/07/2023 null S806329 San Ramon Valley Recycled Water Project Contra Costa 2 Facility Discharger 11/01/2010 null S833580 Summit Reservoir Alameda 2 Facility Discharger 01/29/2015 null S847550 Chabot Dam Alameda 2 Facility Discharger 06/22/2016 null S915491 Wildcat Pipeline Improvements El Cerrito EBMUD Contra Costa 2 Facility Discharger 08/22/2023 null S934145 Upper San Leandro Water Treatment Plant Alameda 2 Facility Discharger 08/04/2025 null S719786 East Area Service Center Seismic Safety & ADA Improvements Contra Costa 2 Facility Discharger 06/18/2008 null S930377 Fay Hill PP Replacement Rheem PP Improvements & Fay Hill PP Vault Demo Contra Costa 2 Facility Discharger 04/15/2025 null S892094 Seneca Reservoir Demolition Alameda 2 Facility Discharger 03/23/2021 null S934147 Sobrante Water Treatment Plant Contra Costa 2 Facility Discharger 08/04/2025 null S872359 San Pablo Clearwell and Rate Control Station Replacement Contra Costa 2 Facility Discharger 04/29/2019 null Related Parties Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification N/A Michael Hartlaub Contact Owner Contact null null null N/A Karl Tingwald Contact Owner Contact null null null N/A Douglas Higashi Contact Owner Contact null null null N/A Timothy Karlstrand Contact Owner Contact null null null N/A Daniel Eng Contact Owner Contact null null null N/A Michiko Mares Contact Owner Contact null null null N/A Karl Tingwald Contact Owner Contact null null null N/A Benjamin Townley Contact Owner Contact null null null N/A Brett Margosian Contact Owner Contact null null null N/A Tim Karlstrand Contact Owner Contact null null null N/A William Hosfeld Contact Owner Contact null null null N/A Olujimi Yoloye Contact Owner Contact null null null N/A Javier Prospero Contact Owner Contact null null null N/A Ben Townley Contact Owner Contact null null null N/A Cameron Miller Contact Owner Contact null null null N/A William Hossfeld Contact Owner Contact null null null Regulatory Measures(non-enforcement) Reg. Measure ID Regulatory Measure Type Region WDID Title Status Program Order No. RM Effective Date RM Termination Date Relationship Relationship Start Date Relationship End Date S587014 Construction 2 2 07C408198 Notice Of Intent New Application Active CONSTW 2009-0009-DWQ 08/12/2025 null Discharger 07/09/2025 null S588218 Construction 2 2 01C408425 Notice Of Intent New Application Active CONSTW 2009-0009-DWQ 08/21/2025 null Discharger 08/04/2025 null S579635 Construction 2 2 07C407274 Notice Of Intent New Application Active CONSTW 2009-0009-DWQ 06/05/2025 null Discharger 12/02/2024 null S583696 Construction 2 2 07C407011 Notice Of Intent New Application Active CONSTW 2009-0009-DWQ 05/12/2025 null Discharger 04/15/2025 null S582132 Construction 2 2 07C406643 Notice Of Intent New Application Active CONSTW 2009-0009-DWQ 04/03/2025 null Discharger 02/25/2025 null S590423 Construction 5S 5S39C409571 Notice Of Intent New Application Active CONSTW 2009-0009-DWQ 09/19/2025 null Discharger 08/29/2025 null S588222 Construction 2 2 07C408426 Notice Of Intent New Application Active CONSTW 2009-0009-DWQ 08/21/2025 null Discharger 08/04/2025 null Violations within the past calendar 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. Enforcement Actions Enforcement ID Enforcement Type Enf. Order No. Title Program Effective Date Status S423649 Notice of Violation null 2 01C372288 CONSTW 08/12/2016 Active S419457 Verbal Communication null 2 01C368155 CONSTW 04/09/2015 Active S418459 Notice of Violation null 2 01C368155 CONSTW 01/15/2015 Historical Regulatory Measures linked to Related Parties Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status