General Information Party ID Party Name Party Classification Mailing Address Work Phone Email/Website S605498 Williams Homes Inc Privately-Owned Business 24911 Avenue Stanford Suite 101 Santa Clarita, CA 91355 661-222-9207 110 lwilliams@williamshomes.com Related Places Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date S878959 Tract 5984 Ventura 4 Facility Discharger 01/28/2020 null S862779 Rosewood Ventura 4 Facility Discharger 03/29/2018 null S887692 Tract 5655 Lots 2 through 4 Ventura 4 Facility Discharger 11/09/2020 null S890177 Fillmore Tract 5422 Creekside Ventura 4 Facility Discharger 01/27/2021 null S817648 WH Fillmore 34 Ventura 4 Facility Discharger 06/20/2012 null S934586 Finch Ranch Ventura 4 Facility Discharger 08/12/2025 null S934167 Finch Ranch Ventura 4 Facility Discharger 08/04/2025 null S893925 Tract 5683 Ventura 4 Facility Discharger 05/17/2021 null S934340 Creekside Ventura 4 Facility Discharger 08/06/2025 null S802327 Tract 18677 Bella Terra San Bernardino 8 Facility Discharger 03/08/2010 null S802544 Hidden Creek San Bernardino 8 Facility Discharger 03/25/2010 null S935482 Palo Verde San Bernardino 7 Facility Discharger 08/25/2025 null S917096 Point Happy Riverside 7 Facility Discharger 10/20/2023 null S913103 Point Happy Riverside 7 Facility Discharger 05/23/2023 null S901720 Campanile Riverside 7 Facility Discharger 01/28/2022 null S902838 Palo Verde Tract 32279 and 33336 Riverside 7 Facility Discharger 03/09/2022 null S905099 Collins Drive Placer 5S Facility Discharger 06/08/2022 null S901644 Magnolia Village Placer 5S Facility Discharger 01/26/2022 null S935068 Magnolia Village Placer 5S Facility Discharger 08/19/2025 null S851456 Foothill II Los Angeles 4 Facility Discharger 11/04/2016 null S744435 Monterey Heights Lots 1 17 Tract 51978 Los Angeles 4 Facility Discharger 09/09/2009 null S901625 Plaza Del Amo Los Angeles 4 Facility Discharger 01/26/2022 null S905696 Valley Villas Los Angeles 4 Facility Discharger 06/30/2022 null S900585 Tract 60259 Park Place Los Angeles 4 Facility Discharger 12/10/2021 null S606792 Solstice South Los Angeles 4 Facility Discharger 11/07/2005 null S863874 Williams Homes Office Building Los Angeles 4 Facility Discharger 05/04/2018 null S835848 Tract 73418 Los Angeles 4 Facility Discharger 06/04/2015 null S905474 Lancaster Apartments Los Angeles 6B Facility Discharger 06/22/2022 null S935841 Valley Villas Los Angeles 4 Facility Discharger 08/28/2025 null S809845 Fairways Residential Los Angeles 4 Facility Discharger 05/12/2011 null Related Parties Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification N/A Martin Mendoza Contact Owner Contact null null null N/A Keith Herren Contact Owner Contact null null null N/A Mike von Quilich Contact Owner Contact null null null N/A Keith Herren Contact Owner Contact null null null N/A Bob Barjam Contact Owner Contact null null null N/A Kelly Brown Contact Owner Contact null null null N/A Lance Williams Contact Owner Contact null null null N/A Lance Williams Contact Owner Contact null null null N/A Steven Gonzalez 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 S589263 Construction 5S 5S31C409686 Notice Of Intent New Application Active CONSTW 2009-0009-DWQ 09/25/2025 null Discharger 08/19/2025 null S589730 Construction 7 7 36C408884 Notice Of Intent New Application Active CONSTW 2009-0009-DWQ 08/29/2025 null Discharger 08/25/2025 null S588421 Construction 4 4 56C408523 Notice Of Intent New Application Active CONSTW 2009-0009-DWQ 08/25/2025 null Discharger 08/06/2025 null S590141 Construction 4 4 19C409058 Notice Of Intent New Application Active CONSTW 2009-0009-DWQ 09/03/2025 null Discharger 08/28/2025 null S588246 Construction 4 4 56C408563 Notice Of Intent New Application Active CONSTW 2009-0009-DWQ 08/25/2025 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. S896264 09/02/2025 SW - Failure to Obtain Permit Failure to obtain coverage under the 2022 CGP by 09/01/2025. Violation N Internal Report Lancaster Apartments S551096 2009-0009-DWQ Y S896191 09/02/2025 SW - Failure to Obtain Permit Failure to obtain coverage under the 2022 CGP by 09/01/2025. Violation N Internal Report Palo Verde Tract 32279 and 33336 S547626 2009-0009-DWQ Y S895186 09/02/2025 SW - Failure to Obtain Permit Failure to obtain coverage under the 2022 CGP by 09/01/2025. Violation N Internal Report Valley Villas S551374 2009-0009-DWQ Y S895169 09/02/2025 SW - Failure to Obtain Permit Failure to obtain coverage under the 2022 CGP by 09/01/2025. Violation N Internal Report Collins Drive S550599 2009-0009-DWQ Y S894219 09/02/2025 SW - Failure to Obtain Permit Failure to obtain coverage under the 2022 CGP by 09/01/2025. Violation N Internal Report Tract 60259 Park Place S544607 2009-0009-DWQ Y S891637 06/23/2025 SW - Deficient BMP Implementation • Sediment track-out was observed on adjacent streets. • Stabilized entrance/exit locations at Goodenough Road and B Street require additional BMPs. • Perimeter controls were found to be inadequate around the entire project boundary. • Visible dust emissions were observed in the air due to grading and earth-moving activities. Violation N Inspection Fillmore Tract 5422 Creekside S531393 2009-0009-DWQ Y Enforcement Actions Enforcement ID Enforcement Type Enf. Order No. Title Program Effective Date Status S456537 Verbal Communication null 4 56C394287 CONSTW 06/23/2025 Active S438427 Verbal Communication null 4 56C389406 CONSTW 10/29/2020 Historical S435959 Notice to Comply null 4 56C383032 CONSTW 11/19/2019 Historical S461113 Notice of Violation null 6B19C398078 CONSTW 09/05/2025 Active S459068 Notice of Violation null 4 19C395981 CONSTW 09/05/2025 Active S461040 Notice of Violation null 7 33C396928 CONSTW 09/05/2025 Active S407377 Notice of Violation null 4 19C337633 CONSTW 12/07/2011 Historical S460018 Notice of Violation null 5S31C398066 CONSTW 09/05/2025 Active S446157 Notice of Violation null 4 56C389406 CONSTW 02/09/2022 Historical S460035 Notice of Violation null 4 19C397942 CONSTW 09/05/2025 Active S448679 2nd Annual Report Notice of Non-Compliance null 7 33C396761 CONSTW 12/15/2022 Historical S411859 1st Annual Report Notice of Non-Compliance null 8 36C357621 CONSTW 12/13/2012 Historical S448460 1st Annual Report Notice of Non-Compliance null 7 33C396761 CONSTW 11/03/2022 Historical Regulatory Measures linked to Related Parties Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status