General Information Party ID Party Name Party Classification Mailing Address Work Phone Email/Website 28935 Hanson Aggregates Privately-Owned Business 12667 Alcosta Boulevard 400 San Ramon, CA 94583 925-244-6584 tina.lau@heidelbergcement.com Related Places Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date 240985 Hanson Aggregates/ Mission Valley Rock Alameda 2 Sand and Gravel Mining Owner 10/09/1996 null Related Parties Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification 548377 Michael Roth Person Legally Responsible Official 09/11/2014 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 422693 13267 Letter (Non-Enforcement) 2 null 13267 Letter (Non-Enforcement) for Hanson Aggregates, Mission Valley Rock Historical NPDNONMUNIPRCS null 07/12/2018 12/04/2018 Discharger 07/13/2018 null 402861 Enrollee - NPDES 2 2 019321002 Enrollee - NPDES under for Hanson Aggregates Active NPDNONMUNIPRCS R2-2020-0028 09/15/2015 null Discharger 09/15/2015 null 182596 Enrollee 2 2 38B012921 Enrollee- CAG982001, Aggregate & Sand Facils - Mission Valley Rock Pier 92 Historical NPDNONMUNIPRCS R2-2008-0011 06/19/2002 12/03/2008 Discharger 08/30/2006 null 179995 Enrollee 2 2 019321001 Enrollee- CAG982001, Aggregate & Sand Facils - Hanson Aggregates/Mission Valley Historical NPDNONMUNIPRCS R2-2008-0011 06/19/2002 09/14/2015 Discharger 09/01/2005 null 143094 NPDES Permit 2 2 019321001 NPDES 97-037 for MISSION VALLEY ROCK COMPANY, Sunol Site Historical NPDMINING 97-037 03/19/1997 10/15/2003 Discharger 03/19/1997 null 132305 NPDES Permit 2 2 019321001 NPDES 03-090 - Rescission of Order 97-037 for MISSION VALLEY ROCK CO, Sunol Historical NPDMINING R2-2003-0090 10/15/2003 10/15/2003 Discharger 10/15/2003 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. 1119977 07/18/2023 Late Report Annual stormwater report (2022-2023) was due July 17, 2023, and was submitted on September 5, 2023. Violation null Report Hanson Aggregates/ Mission Valley Rock 402861 R2-2020-0028 Y Enforcement Actions Enforcement ID Enforcement Type Enf. Order No. Title Program Effective Date Status 455318 Admin Civil Liability R2-2024-1026 ACL R2-2024-1026 for Hanson Aggregates NPDNONMUNIPRCS 03/25/2024 Historical 454306 Oral Communication null Oral Com 09/05/2023 for Hanson Aggregates NPDNONMUNIPRCS 09/05/2023 Historical 454292 Oral Communication null Oral Com 05/24/2023 for Hanson Aggregates NPDNONMUNIPRCS 05/24/2023 Historical 454289 Oral Communication null Oral Com 01/13/2023 for Hanson Aggregates NPDNONMUNIPRCS 01/13/2023 Historical 453053 Oral Communication null Oral Com 06/12/2023 for Hanson Aggregates NPDNONMUNIPRCS 06/12/2023 Historical 448455 Admin Civil Liability R2-2022-1003 ACL R2-2022-1003 for Hanson Aggregates NPDMINING 07/06/2022 Historical 442198 Oral Communication null Oral Com 02/10/2021 for Hanson Aggregates NPDNONMUNIPRCS 02/10/2021 Historical 428825 Admin Civil Liability R2-2019-1009 ACL R2-2019-1009 for Hanson Aggregates NPDNONMUNIPRCS 05/16/2019 Historical 425166 Oral Communication null Oral Com for Hanson Aggregates NPDNONMUNIPRCS 09/27/2018 Historical 311941 Notice of Violation NOV NOV 8-31-06 for Mission Valley Rock Co. NPDNONMUNIPRCS 08/31/2006 Historical 227519 13267 Letter UNKNOWN Enforcement - 2 019321001 NPDNONMUNIPRCS 10/29/1999 Historical Regulatory Measures linked to Related Parties Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status