General Information Party ID Party Name Party Classification Mailing Address Work Phone Email/Website 47877 United States Gypsum Company Privately-Owned Business Po Box 2450 El Centro, CA 92244 760-358-3234 null Related Places Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date 805634 US Gypsum Co Plaster City Quarry Expansion 2014-2020 Imperial 7 Dredge/Fill Site Owner 04/23/2014 null 768667 US Gypsum Co Plaster City Water Supply Pipeline Imperial 7 Dredge/Fill Site Owner and Operator 07/15/2011 null 269437 US Gypsum Plaster City Quarry Imperial 7 Dredge/Fill Site Owner 02/07/2005 null 269436 US Gypsum Plant 9710DWQ01 Imperial 7 Facility Owner 06/01/2004 null 269435 US Gypsum Office 9710DWQ02 Imperial 7 Facility Owner 06/01/2004 null 269434 US Gypsum WMF Imperial 7 Land fill Owner 01/25/1978 null Related Parties Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification 546209 Lonnie Dyck Person Legally Responsible Official 04/23/2014 null null 141795 D Dresher Person Enforcement Contact 10/29/2002 null null 141795 D Dresher Person Enforcement Contact 11/17/2004 null null 141795 D Dresher Person Enforcement Contact 02/27/2004 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 456687 Enrollee - WDR 7 7A130303011 Enrollee WDR R7-2022-0033(0005) for United States Gypsum Company Active LFNONOPER R7-2022-0033 04/22/2024 null Discharger 04/24/2024 null 395776 401 Certification 7 7B133037001 401 Cert for United States Gypsum Company Historical CERMINING null 05/02/2014 05/02/2020 Discharger 04/23/2014 null 205594 Enrollee 7 7A132021012 7A132021012 Active WDRMUNIENROTH 97-010-DWQ 06/30/2004 null Discharger 09/01/2005 null 205593 Enrollee 7 7A132021011 7A132021011 Active WDRMUNIENROTH 97-010-DWQ 01/25/1978 null Discharger 09/01/2005 null 136241 WDR 7 7A130303011 WDR 96-001 for UNITED STATES GYPSUM COMPANY Active LFNONOPER 96-001 01/24/1996 null Discharger 01/24/1996 null 136037 WDR 7 7A130303011 WDR 88-060 for UNITED STATES GYPSUM COMPANY Historical LNDISP 88-060 05/12/1988 null Discharger 05/12/1988 null 135801 WDR 7 7A132021011 WDR 88-046 for UNITED STATES GYPSUM COMPANY Historical WDR 88-046 03/23/1988 05/19/1993 Discharger 03/23/1988 null 135674 WDR 7 7A132021011 WDR 93-017 for UNITED STATES GYPSUM COMPANY Historical WDR 93-017 05/19/1993 03/10/2005 Discharger 05/19/1993 null 134516 WDR 7 7A130303011 WDR 78-013 for UNITED STATES GYPSUM COMPANY Historical LNDISP 78-013 01/25/1978 null Discharger 01/25/1978 null 134514 WDR 7 7A132021011 WDR 78-011 for UNITED STATES GYPSUM COMPANY Historical WDR 78-011 01/25/1978 03/23/1988 Discharger 01/25/1978 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 254686 Staff Enforcement Letter UNKNOWN Enforcement - 7A132021011 WDRMUNIENROTH 11/17/2004 Historical 251183 Staff Enforcement Letter UNKNOWN Enforcement - 7A132021011 WDR 02/27/2004 Historical 246590 Staff Enforcement Letter UNKNOWN Enforcement - 7A132021011 WDR 10/29/2002 Historical 245164 Staff Enforcement Letter UNKNOWN Enforcement - 7A132021011 WDR 11/29/1999 Historical 231788 Staff Enforcement Letter UNKNOWN Enforcement - 7A132021011 WDR 03/29/2000 Historical Regulatory Measures linked to Related Parties Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status