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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
32568 Oliver De Silva, Inc Privately-Owned Business 11555 Dublin Boulevard 2922 Dublin, CA 94568 925-828-7999 None
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
887542 Oliver de Silva Asphalt Facility Emergency Bank Repair Alameda 2 Dredge/Fill Site Owner 04/07/2023 None
220142 Diamond A/ Apperson Quarry Alameda 2 Sand and Gravel Mining Owner 09/18/1985 None
252950 DeSilva Gates Aggregates Alameda 2 Sand and Gravel Mining Owner and Operator 08/22/2014 None
797345 Alameda Creek and San Antonio Creek Alameda 2 Dredge/Fill Site Owner 07/29/2013 None
Total Related Places: 4
  
  
  
  
Expand/Contract Related Parties
Related Parties
Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification
638890 Scott Archibald Person Legally Responsible Official 04/07/2023 None None
560543 Alan French Person Legally Responsible Official 11/18/2016 None None
542194 James Summers Person Legally Responsible Official 07/29/2013 None None
Total Related Parties: 3
  
  
  
  
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?
452191 Enrollee - 401 Certification 2 2 CW452191 Active CERFILLEXC 2019-0044-EXEC 04/17/2023 None Discharger 04/07/2023 None N
410097 Enrollee - NPDES 2 2 019135003 Active NPDMINING R2-2020-0028 11/14/2016 None Discharger 11/04/2016 None N
392506 401 Certification 2 2 CW392506 Historical CERMINING None 03/19/2015 03/19/2020 Discharger 07/29/2013 None N
382333 Enrollee 2 2 019135003 Historical NPDNONMUNIPRCS R2-2008-0011 12/01/2011 12/07/2011 Discharger 12/02/2011 None N
141209 WDR 2 2 019031001 Active WDRMINING 85-097 09/18/1985 None Discharger 09/18/1985 None N
Total Regulatory Measures: 5
  
  
  
  
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.
1111211 09/30/2022 Deficient Monitoring During the period of January 1, 2022, through September 30, 2022, the Discharger failed to report 42 required data points. The missed/unreported monitoring was not acknowledged via 24-hr reports, 5-day reports, or in the transmittal letters of relevant SMRs. Violation None Report DeSilva Gates Aggregates 410097 R2-2020-0028 Y
1111203 09/02/2022 Other Codes Violation of 13383 Order sent July 8, 2022, requiring Discharger to investigate the source of previously reported chlorine in its discharge and report the results of the investigation, including a substantiated determination of source, by September 2, 2022. Discharger was also required to correct previous reporting errors and to provide comprehensive table of total residual chlorine data with required metadata. Discharger failed to report steps taken to investigate source of chlorine, did not correct previous reporting errors, and did not provide all required metadata with chlorine data. Violation N Report DeSilva Gates Aggregates 410097 R2-2020-0028 Y
1111246 02/15/2022 Deficient Reporting The Discharger?s 2021 Annual Report lacked the items required by the Order in Attachment E §§ VII.B.2.b.ii-vi. Violation None Report DeSilva Gates Aggregates 410097 R2-2020-0028 Y
1073865 10/31/2019 Late Report The 2019 3rd quarter report was submitted late. Violation N Report DeSilva Gates Aggregates 410097 R2-2020-0028 N
1111216 08/17/2022 CAT1 Settleable Solids Daily Maximum limit is 0.2 ml/L/hr and reported value was 0.3 ml/L/hr. Violation None Report DeSilva Gates Aggregates 410097 R2-2020-0028 Y
1124327 12/31/2023 Deficient Monitoring Monthly monitoring of receiving water (Alameda Creek, upstream and downstream) missed for November and December 2023. Violation None Report DeSilva Gates Aggregates 410097 R2-2020-0028 N
1119823 01/31/2023 Deficient Monitoring From January 1, 2023, to January 31, 2023, DGA did not monitor for turbidity, hardness, or salinity in either upstream or downstream receiving water (Alameda Creek). The permit requires monitoring once a month for each of those constituents at upstream and downstream locations. Violation None Report DeSilva Gates Aggregates 410097 R2-2020-0028 N
1111245 08/18/2022 Deficient Monitoring The Discharger failed to perform accelerated monitoring after an August 17, 2022, exceedance of the effluent limitation for settleable solids. Violation None Report DeSilva Gates Aggregates 410097 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: 8
*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
450495 Notice of Violation None NOV 12/09/2022 for Oliver De Silva, Inc NPDMINING 12/09/2022 Historical
455321 Admin Civil Liability R2-2024-1027 ACL R2-2024-1027 for Oliver De Silva, Inc NPDMINING 03/05/2024 Historical
Total Enforcement Actions: 2
  
  
  
  
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: 05/17/2024
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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