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   Party At-A-Glance Report

  
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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
  
  
  
  
Expand/Contract Related Places
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 None
Total Related Places: 1
  
  
  
  
Expand/Contract Related Parties
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 None None
Total Related Parties: 1
  
  
  
  
Expand/Contract Regulatory Measures
Regulatory Measures (non-enforcement)
Reg. Measure ID Regulatory Measure Type Region WDID Status Program Order No. RM Effective Date RM Termination Date Relationship Relationship Start Date Relationship End Date Amended?
422693 13267 Letter (Non-Enforcement) 2 None Historical NPDNONMUNIPRCS None 07/12/2018 12/04/2018 Discharger 07/13/2018 None N
402861 Enrollee - NPDES 2 2 019321002 Active NPDNONMUNIPRCS R2-2020-0028 09/15/2015 None Discharger 09/15/2015 None N
182596 Enrollee 2 2 38B012921 Historical NPDNONMUNIPRCS R2-2008-0011 06/19/2002 12/03/2008 Discharger 08/30/2006 None N
179995 Enrollee 2 2 019321001 Historical NPDNONMUNIPRCS R2-2008-0011 06/19/2002 09/14/2015 Discharger 09/01/2005 None N
143094 NPDES Permit 2 2 019321001 Historical NPDMINING 97-037 03/19/1997 10/15/2003 Discharger 03/19/1997 None N
132305 NPDES Permit 2 2 019321001 Historical NPDMINING R2-2003-0090 10/15/2003 10/15/2003 Discharger 10/15/2003 None N
Total Regulatory Measures: 6
  
  
  
  
Expand/Contract Violations
Violations within the past five years
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 None Report Hanson Aggregates/ Mission Valley Rock 402861 R2-2020-0028 Y
1119973 02/23/2023 Deficient Monitoring No standard observations for effluent, receiving water (upstream), or receiving water (downstream) on 2/23/23. Reported discharge amount was 0.86 MG. Cause reported was "MSHA Training, No Trained Employee On Site." Violation None Report Hanson Aggregates/ Mission Valley Rock 402861 R2-2020-0028 N
1119927 02/01/2023 Deficient Monitoring Did not conduct monthly receiving water monitoring for turbidity, hardness, and salinity during January 2023. Monitoring not performed for either upstream or downstream receiving water. According to MVR, the cause of the violation was a combination of extreme weather that made monitoring unsafe and the third party contractor being confused about monitoring requirements. Violation None Report Hanson Aggregates/ Mission Valley Rock 402861 R2-2020-0028 N
1119925 01/03/2023 OEV Turbidity Maximum Daily (MDEL) limit is 40 NTU and reported value was 55 NTU. Violation None Report Hanson Aggregates/ Mission Valley Rock 402861 R2-2020-0028 Y
1117772 06/05/2023 CAT1 Settleable Solids Maximum Daily (MDEL) limit is 0.2 ml/L/hr and reported value was 1.3 ml/L/hr. Violation None Report Hanson Aggregates/ Mission Valley Rock 402861 R2-2020-0028 Y
1117103 05/18/2023 Unauthorized Discharge One of the facility's ponds (Tank Farm Pond) overflowed onto a bermed road. The water overtopped the berm and flowed down the adjacent hillside to Alameda Creek. Part of the berm was sloughed off and carried with the water towards the creek. Water also reached an area called "Creek Crossing" where Calaveras and Alameda Creek intersect. The quantity of water that was discharged is unknown. MVR suspects that the discharge was caused by non-synchronized pumps. Estimated quantity of discharge: 10,007 gallons. Violation None Report Hanson Aggregates/ Mission Valley Rock 402861 R2-2020-0028 Y
Report currently showing last five years of violations. Click here to return to viewing one year of violations. Refer to the Interactive Violation Report for more data.
Total Violations: 6
*Click the "(+/-) Violation Description" link to expand and contract the violation description.
  
  
  
  
Expand/Contract Enforcement Actions
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 None Oral Com 09/05/2023 for Hanson Aggregates NPDNONMUNIPRCS 09/05/2023 Historical
454292 Oral Communication None Oral Com 05/24/2023 for Hanson Aggregates NPDNONMUNIPRCS 05/24/2023 Historical
454289 Oral Communication None Oral Com 01/13/2023 for Hanson Aggregates NPDNONMUNIPRCS 01/13/2023 Historical
453053 Oral Communication None 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 None 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 None 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
Total Enforcement Actions: 11
  
  
  
  
Expand/Contract Enforcement Actions
Regulatory Measures linked to Related Parties
Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status
Total Regulatory Measures linked to Related Parties: 0
  
  
The current report was generated with data as of: 05/19/2026
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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