General Information Party ID Party Name Party Classification Mailing Address Work Phone Email/Website S50914 William Lyon Homes San Ramon Privately-Owned Business 2603 Camino Ramon Ste 150 San Ramon, CA 94583 N/A N/A Related Places Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date S238870 Lyon Seasons At Silverado Stanislaus 5S Facility Discharger 09/01/2005 null S201205 Columbus Pkwy Solano 2 Facility Discharger 09/01/2005 null S614088 Baton Rouge Townhomes Santa Clara 2 Facility Discharger 12/19/2005 null S263497 THE RANCH ON SILVER CREEK Santa Clara 2 Facility Discharger 08/10/2011 null S621234 North Baseline & Almeria San Bernardino 8 Facility Discharger 03/06/1998 null S261855 Springfield Rnch El Dorado 5S Facility Discharger 09/01/2005 null S613539 Subdivision 8448 Vista Del Mar Contra Costa 2 Facility Discharger 05/16/2005 null S211165 Bay Side & Sycamore Ave Ext Contra Costa 2 Facility Discharger 09/01/2005 null S271141 Victoria By Bay P2 P3 Contra Costa 2 Facility Discharger 09/01/2005 null S238197 Legends Contra Costa 5S Facility Discharger 09/01/2005 null S201207 Thomas Rnch Contra Costa 2 Facility Discharger 09/01/2005 null S603880 Walnut Blvd Contra Costa 5S Facility Discharger 07/14/1998 null S201206 5277 Crow Canyon Rd Alameda 2 Facility Discharger 09/01/2005 null Related Parties Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification N/A Ron Foust Contact Owner Contact null null null N/A Alan Uman Contact Owner Contact null null null N/A Scott Jones Contact Owner Contact null null null N/A Dan Benavidez Contact Owner Contact null null null N/A Sparky Greco Contact Owner Contact null null null N/A Mark Berch Contact Owner Contact null null null N/A Mike Squier 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 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 S246493 Notice to Comply UNKNOWN 2 07C318044 CONSTW 12/23/2002 Active S243031 Notice of Violation null 5S09C315773 CONSTW 05/01/2003 Historical S241142 Notice to Comply null 2 07C318044 CONSTW 03/13/2002 Active S240715 Notice to Comply null 2 07C318044 CONSTW 01/26/2002 Active S239616 Notice to Comply null 2 07C318044 CONSTW 01/28/2002 Active S227564 13267 Letter/Order UNKNOWN 2 48C309644 CONSTW 07/26/1999 Historical S226353 13267 Letter/Order UNKNOWN 2 07C311474 CONSTW 08/15/2000 Historical S226352 Staff Enforcement Letter UNKNOWN 2 07C311474 CONSTW 11/22/2000 Historical S226321 Notice of Violation UNKNOWN 2 01C309690 CONSTW 08/16/1999 Historical S226320 13267 Letter/Order UNKNOWN 2 01C309690 CONSTW 07/26/1999 Historical S225207 Notice of Violation UNKNOWN 2 48C309644 CONSTW 11/16/1999 Historical Regulatory Measures linked to Related Parties Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status