General Information Party ID Party Name Party Classification Mailing Address Work Phone Email/Website 527932 Gregory Knapp null 12667 Alcosta Boulevard 400 San Ramon, CA 94583(+) 925-244-6570 greg.knapp@hanson.com Related Places Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date 273205 Lehigh Southwest and Hanson Limestone Quarry Cement Plant (Permanente) Santa Clara 2 Sand and Gravel Mining Contact 03/13/2014 null Related Parties Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification 25748 Lehigh Southwest Cement Company Organization Legally Responsible Official 08/16/2018 null Privately-Owned Business 25748 Lehigh Southwest Cement Company Organization Legally Responsible Official 01/05/2018 null Privately-Owned Business 25746 Lehigh Southwest Cement Company, Redding Organization Data Submitter 07/19/2011 03/01/2012 Privately-Owned Business 23863 Lehigh Southwest Cement Company, Permanente Facility Organization Employee 03/01/2012 null Privately-Owned Business 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 395340 NPDES Permit 2 2 438668001 NPDES permit for Lehigh Southwest Cement Company, Permanente Facility Historical NPDINDLRG R2-2014-0010 05/01/2014 08/31/2019 Discharger Contact 03/13/2014 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 Regulatory Measures linked to Related Parties Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status 454583 Lehigh Southwest Cement Company Enrollee - NPDES NPDNONMUNIPRCS 08/25/2023 Active 454583 Lehigh Southwest Cement Company Enrollee - NPDES NPDNONMUNIPRCS 08/25/2023 Active 438690 Lehigh Southwest Cement Company Resolution LFNONOPER 06/04/2020 Historical 438690 Lehigh Southwest Cement Company Resolution LFNONOPER 06/04/2020 Historical 432980 Lehigh Southwest Cement Company, Permanente Facility NPDES Permit NPDINDLRG 09/01/2019 Active 430854 Lehigh Southwest Cement Company 13267 Letter (Non-Enforcement) LFNONOPER 05/28/2019 Historical 430854 Lehigh Southwest Cement Company 13267 Letter (Non-Enforcement) LFNONOPER 05/28/2019 Historical 428336 Lehigh Southwest Cement Company 401 Certification CERFILLEXC 08/13/2020 Historical 428336 Lehigh Southwest Cement Company 401 Certification CERFILLEXC 08/13/2020 Historical 418588 Lehigh Southwest Cement Company Enrollee - NPDES NPDNONMUNIPRCS 05/24/2018 Historical 418588 Lehigh Southwest Cement Company Enrollee - NPDES NPDNONMUNIPRCS 05/24/2018 Historical 414776 Lehigh Southwest Cement Company, Permanente Facility NPDES Permit NPDINDLRG 10/01/2017 Active 395340 Lehigh Southwest Cement Company, Permanente Facility NPDES Permit NPDINDLRG 05/01/2014 Historical 384455 Lehigh Southwest Cement Company, Permanente Facility WDR LNDISPOTH 06/13/2018 Active 380558 Lehigh Southwest Cement Company, Permanente Facility Enrollee NPDNONMUNIPRCS 11/22/2011 Historical 380556 Lehigh Southwest Cement Company, Permanente Facility Enrollee NPDNONMUNIPRCS 11/21/2011 Historical 380550 Lehigh Southwest Cement Company, Permanente Facility Enrollee NPDNONMUNIPRCS 11/21/2011 Historical 380549 Lehigh Southwest Cement Company, Permanente Facility Enrollee NPDNONMUNIPRCS 10/28/2011 Historical 380548 Lehigh Southwest Cement Company, Permanente Facility Enrollee NPDNONMUNIPRCS 11/21/2011 Historical 380546 Lehigh Southwest Cement Company, Permanente Facility Enrollee NPDNONMUNIPRCS 11/22/2011 Historical 380545 Lehigh Southwest Cement Company, Permanente Facility Enrollee NPDNONMUNIPRCS 11/21/2011 Historical 380543 Lehigh Southwest Cement Company, Permanente Facility Enrollee NPDNONMUNIPRCS 11/21/2011 Historical 146746 Lehigh Southwest Cement Company WDR LFNONOPER 04/17/1998 Historical 146746 Lehigh Southwest Cement Company WDR LFNONOPER 04/17/1998 Historical 146578 Lehigh Southwest Cement Company WDR LNDISP 01/24/1997 Historical 146578 Lehigh Southwest Cement Company WDR LNDISP 01/24/1997 Historical 146249 Lehigh Southwest Cement Company, Permanente Facility WDR WDR 08/20/1974 Historical 143297 Lehigh Southwest Cement Company, Permanente Facility Reclamation Requirements REC 03/16/1994 Active 143130 Lehigh Southwest Cement Company, Permanente Facility WDR WDR 05/21/1997 Historical 139956 Lehigh Southwest Cement Company WDR LNDISP 12/11/1987 Historical 139956 Lehigh Southwest Cement Company WDR LNDISP 12/11/1987 Historical 139382 Lehigh Southwest Cement Company WDR LNDISP 12/20/1974 Historical 139382 Lehigh Southwest Cement Company WDR LNDISP 12/20/1974 Historical