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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
147815 Hanson Aggregates Mid Pacific Privately-Owned Business 3000 Executive Parkway 240 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
891962 Hanson Derelict Vessel Removal Contra Costa 2 Dredge/Fill Site Owner 01/10/2024 None
882496 Derelict Barge Removal Contra Costa 2 Dredge/Fill Site Owner 07/28/2022 None
863210 Lehigh Southwest Stockton Terminal Project San Joaquin 5S Dredge/Fill Site Owner 11/27/2019 None
833691 San Francisco Pier 94 Facility San Francisco 2 Sand and Gravel Mining None None None
646825 Hanson Aggregates SF Pier 92 Sand Yard San Francisco 2 Sand and Gravel Mining None None None
242331 Marine Aggregate Services, Inc San Francisco 2 Sand and Gravel Mining Owner 10/03/1995 None
239517 Marina Vista Facility Contra Costa 2 Sand and Gravel Mining Owner 06/25/1997 None
203213 4501 Tidewater Ave, Oakland Alameda 2 Sand and Gravel Mining None None None
Total Related Places: 8
  
  
  
  
Expand/Contract Related Parties
Related Parties
Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification
563172 Tina Lau Person Employee 03/30/2017 None None
563172 Tina Lau Person Legally Responsible Official 11/27/2019 None None
563171 Mike Bishop Person Legally Responsible Official 03/30/2017 None None
562591 Erika Guerra Person Legally Responsible Official 07/28/2022 None None
463716 Lee Cover Person Owner Contact 03/28/2008 None None
348798 William Butler Person Employee 10/27/2006 None None
Total Related Parties: 6
  
  
  
  
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?
412426 Enrollee - NPDES 2 2 386022002 Historical NPDINDSML R2-2020-0028 03/22/2017 11/11/2023 Discharger 03/30/2017 None N
402859 Enrollee - NPDES 2 2 386028002 Active NPDNONMUNIPRCS R2-2020-0028 09/15/2015 None Discharger 09/15/2015 None N
402858 Enrollee - NPDES 2 2 019216002 Active NPDNONMUNIPRCS R2-2020-0028 09/15/2015 None Discharger 09/15/2015 None N
350123 Enrollee 2 2 071123001 Historical NPDNONMUNIPRCS R2-2008-0011 07/01/2008 09/22/2014 Discharger 02/18/2009 None N
308658 Enrollee 2 2 386028001 Historical NPDNONMUNIPRCS R2-2008-0011 06/19/2002 09/14/2015 Discharger 03/28/2008 None N
259535 Letter 2 None Historical NPDMINING LT970718 None None Discharger 07/18/1997 None N
184906 Enrollee - WDR 2 2 SM2104003 Historical CERDREDGE 95-177 10/03/1995 01/21/2015 Discharger 09/01/2005 None N
179983 Enrollee 2 2 019216001 Historical NPDNONMUNIPRCS R2-2008-0011 10/17/2006 09/14/2015 Discharger 03/28/2008 None N
148693 NPDES Permit 2 2 071123001 Historical NPDMINING R2-2001-0112 10/16/2001 None Discharger 10/17/2001 None N
147630 NPDES Permit 2 2 071123001 Historical NPDMINING LT970718 07/18/1997 10/15/2001 Discharger 07/18/1997 None N
145932 NPDES Permit 2 2 071123001 Historical NPDMINING 84-001 01/18/1984 None Discharger 01/18/1984 None N
141866 NPDES Permit 2 2 071123001 Historical NPDMINING 90-145 11/14/1990 None Discharger 11/14/1990 None N
Total Regulatory Measures: 12
  
  
  
  
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.
1150511 01/13/2026 CAT2 Chlorine, Total Residual Instantaneous Maximum limit is 0.0 mg/L and reported value was 0.92 mg/L. Violation None Report 4501 Tidewater Ave, Oakland 402858 R2-2020-0028 N
1120016 12/31/2022 Unauthorized Discharge According to the discharger's 5-day report, the discharge was not directly observed, but likely occurred on December 31, 2022, due to a major storm event. The discharge was likely composed of comingled stormwater and potable water and discharged directly to the San Francisco Bay. From the report, "storm water flows breached the storm water retention berm, and the flow at this location caused a potable water line to break. Potable water then combined with accumulated storm water and breached a second of the Facility?s storm water retention berms; this comingled potable and storm water is believed to have discharged off-site." Violation None Report Hanson Aggregates SF Pier 92 Sand Yard 402859 R2-2020-0028 Y
1120009 07/18/2023 Late Report Annual stormwater report (2022-2023) due 7/17/23; received 9/5/23. Violation None Report 4501 Tidewater Ave, Oakland 402858 R2-2020-0028 Y
1117595 05/26/2023 OEV Turbidity Maximum Daily (MDEL) limit is 50 NTU and reported value was 110 NTU. Violation N Report Hanson Aggregates SF Pier 92 Sand Yard 402859 R2-2020-0028 Y
1101930 01/19/2022 CAT2 Chlorine, Total Residual Instantaneous Maximum limit is 0.0 mg/L and reported value was 0.1 mg/L. Violation None Report 4501 Tidewater Ave, Oakland 402858 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: 5
*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
454313 Oral Communication None Oral Com 01/09/2023 for Hanson Aggregates Mid Pacific NPDNONMUNIPRCS 01/09/2023 Historical
454304 Oral Communication None Oral Com 09/05/2023 for Hanson Aggregates Mid Pacific NPDNONMUNIPRCS 09/05/2023 Historical
452939 Oral Communication None Oral Com 05/31/2023 for Hanson Aggregates Mid Pacific NPDNONMUNIPRCS 05/31/2023 Historical
448306 Admin Civil Liability R2-2022-1015 ACL R2-2022-1015 for Hanson Aggregates Mid Pacific NPDNONMUNIPRCS 11/17/2022 Historical
439566 Admin Civil Liability R2-2020-1033 ACL R2-2020-1033 for Hanson Aggregates Mid Pacific NPDNONMUNIPRCS 11/11/2020 Historical
439565 Admin Civil Liability R2-2020-1032 ACL R2-2020-1032 for Hanson Aggregates Mid Pacific NPDNONMUNIPRCS 11/11/2020 Historical
433607 Admin Civil Liability R2-2020-1005 ACL R2-2020-1005 for Hanson Aggregates Mid Pacific NPDINDSML 01/15/2020 Historical
428904 Admin Civil Liability R2-2019-1011 ACL R2-2019-1011 for Hanson Aggregates Mid Pacific NPDINDSML 05/16/2019 Historical
428800 Admin Civil Liability R2-2019-1010 ACL R2-2019-1010 for Hanson Aggregates Mid Pacific NPDNONMUNIPRCS 05/16/2019 Historical
428799 Admin Civil Liability R2-2019-1012 ACL R2-2019-1012 for Hanson Aggregates Mid Pacific NPDNONMUNIPRCS 05/16/2019 Historical
425456 Oral Communication None Oral Com for Hanson Aggregates Mid Pacific NPDINDSML 09/27/2018 Historical
425302 Staff Enforcement Letter None SEL for Hanson Aggregates Mid Pacific NPDNONMUNIPRCS 09/27/2018 Historical
403241 Admin Civil Liability R2-2016-1006 ACL R2-2016-1006 for Hanson Aggregates Mid Pacific NPDNONMUNIPRCS 04/19/2016 Historical
394960 Admin Civil Liability R2-2014-1014 ACL 05/29/2014 for Hanson Aggregates Mid Pacific NPDNONMUNIPRCS 05/29/2014 Historical
392713 Admin Civil Liability R2-2013-1030 ACL R2-2013-1030 for Hanson Aggregates Mid Pacific NPDNONMUNIPRCS 10/22/2013 Historical
374260 Admin Civil Liability R2-2011-0092 2010 EPL for SF Pier 92 Sand Washing Yard NPDNONMUNIPRCS 08/31/2006 Historical
373648 Admin Civil Liability None EPL(MMP) Spring 2010: Sand Washing- Hanson Aggregates Mid-Pacific, Oakland NPDESWW 07/01/2008 Historical
Total Enforcement Actions: 17
  
  
  
  
Expand/Contract Enforcement Actions
Regulatory Measures linked to Related Parties
Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status
412426 Tina Lau Enrollee - NPDES NPDINDSML 03/22/2017 Historical
412426 Tina Lau Enrollee - NPDES NPDINDSML 03/22/2017 Historical
Total Regulatory Measures linked to Related Parties: 2
  
  
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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