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California Integrated Water Quality System Project (CIWQS)
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Place ID 237327 		  
  
  
  
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General Information
Region Place ID Place Name Place Type Place Address Place County
2 237327 CEMEX Construction Materials Pacific, LLC ELIOT Site Sand and Gravel Mining 1544 Stanley Pleasanton, CA, 94566 Alameda
Expand/Contract Related Parties
Related Parties
Party Party Type Party Name Role Classification Relationship Start Date Relationship End Date
629893 Person Alessandra Moyer Case Worker 12/16/2021
547281 Person Debbie Phan Case Worker 08/01/2019 07/12/2021
600707 Person Saira Soriano Is A Data Submitter For 08/01/2019
137758 Organization San Francisco Bay Regional Water Quality Control Board Regulating Waterboard 02/18/2009
37564 Organization Cemex Construction Materials Pacific LLC Owner Privately-Owned Business 01/16/1985
Total Related Parties: 5
Expand/Contract Regulatory Measures
Regulatory Measures
Reg Measure ID Reg Measure Type Region Program Order No. WDID Effective Date Expiration Date Status Amended?
402857 Enrollee - NPDES 2 NPDNONMUNIPRCS R2-2020-0028 2 019135005 09/15/2015 12/31/2025 Active N
179976 Enrollee 2 NPDNONMUNIPRCS R2-2008-0011 2 019135001 06/26/2008 04/13/2013 Historical N
132631 NPDES Permit 2 NPDMINING R2-2003-0046 2 019135001 05/21/2003 05/21/2003 Historical N
142417 NPDES Permit 2 NPDMINING 96-045 2 019135001 04/17/1996 04/17/2001 Historical N
141901 NPDES Permit 2 NPDMINING 91-036 2 019135001 03/20/1991 03/20/1996 Historical N
146601 NPDES Permit 2 NPDMINING 85-003 2 019135001 01/16/1985 01/16/1990 Historical N
Total Reg Measures: 6
Expand/Contract Violations
Violations
Violation ID Occurred Date Violation Type (-) Violation Description Corrective Action Status Classification Source
1144020 04/30/2025 LREP The 2025 first quarter SMR was due on April 30 and was submitted on May 5, 2025, following a reminder email from Alessandra Moyer to Erin Cervantes. It was a report of no discharge. Violation B Report
1127802 05/01/2024 LREP First quarter report was due April 30, 2024. Submitted May 14, 2024. Violation B Report
1124787 02/16/2024 LREP 2023 Annual Report was due on February 15, 2024, but was not submitted until February 29, 2024, after multiple email reminders. Violation B Report
1124788 02/15/2024 Deficient Reporting 2023 Annual Report did not contain information about violations that occurred in 2023, including unauthorized discharge in January, or late Q2, Q3, Q4, and Annual reports. Report did not include a comprehensive discussion of performance and compliance, summaries of monitoring data, wastewater facilities review and evaluation status report, annual O&MM review status report, or annual BMP Plan evaluation. Violation B Report
1124786 01/31/2024 LREP Q4 2023 report was due January 30, 2024, but was not submitted until February 29, 2024, after multiple reminder emails. Violation B Report
1122363 10/30/2023 LREP Quarter 3 (2023) report was due on October 30,2023, and was submitted on November 7, 2023. This is not an MMP-able violation because it is a no-discharge report. Report was sent after Water Board staff (AM) emailed Erin Loza to request the report on November 6, 2023. Violation B Report
1119824 07/31/2023 LREP 2023 Q2 SMR was due on July 31, 2023, but was received on September 5, 2023. It was a report of no discharge. Report was submitted after Regional Water Board staff requested it. Violation B Report
1119769 01/12/2023 UAUTHDISC According to a report from CEMEX, due to an atmospheric river and related releases from the Del Valle Dam, the Arroyo Del Valle breached Lake A at the southeast corner on 1/12/2023. CEMEX staff conducted a site visit on 1/20/23, at which time they discovered that Lake A had breached the southwest corner of the lake, creating a "pass-through (outlet)" for flows. Both breaches were approximately 50 feet wide. There were also erosional escarpments to the east of the primary breach. According to CEMEX, mining has not occurred at Lake A for the past 10 years. Corrective Actions: "Given the ground conditions as a result of the heavy rains in January – March 2023, access to Lake A is and has been very limited. The secondary breach has cut-off vehicular access to the majority of the Lake A property. CEMEX is closely monitoring the situation and evaluating whether the continued breach of Lake A warrants emergency work to protect additional property loss. Additionally, CEMEX is pursuing an engineering evaluation and design for long-term bank stabilization repairs at the Lake A reach along the ADV." Violation B Report
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.
Total Violations: 8 Priority Violations: 0
*Click the "(+/-) Violation Description" link to expand and contract the violation description.
*As of 5/20/2010, the Water Board's Enforcement Policy requires that all violations be classified as 1, 2 or 3, with class 1 being the highest. Prior to this, violations were simply classified as Yes or No. If a 123 classification has been assigned to a violation that occurred before this date, that classification data will be displayed instead of the Yes/No data.
Violation Types
Deficient Reporting = Deficient Reporting LREP = Late Report
UAUTHDISC = Unauthorized Discharge
Expand/Contract Enforcement Actions
Enforcement Actions
Enf Id Enf Type Enf Order No. Effective Date Status
371979 Expedited Payment Letter Never Active
456092 Oral Communication 03/05/2024 Historical
454194 Oral Communication 08/31/2023 Historical
454195 Oral Communication 01/24/2023 Historical
398756 Admin Civil Liability R2-2015-1006 05/12/2015 Historical
373500 Expedited Payment Letter 06/26/2008 Never Active
Total Enf Actions: 6
Expand/Contract Inspections
Inspections
Inspection ID Inspection Type Lead Inspector Actual End Date Planned Violations Attachment
60410290 B Type compliance inspection Alessandra Moyer 06/19/2025 Y 0 N/A
32189316 Miscellaneous inspection Maya McInerney 03/07/2018 N 0 N/A
18602628 B Type compliance inspection Farhad Azimzadeh 08/28/2014 N 0 N/A
17567947 B Type compliance inspection Farhad Azimzadeh 08/27/2014 N 0 N/A
289300 B Type compliance inspection Jenny Chen 12/18/2001 Y 0 N/A
289301 B Type compliance inspection James Nusrala 04/19/2000 Y 0 N/A
289298 B Type compliance inspection Vijay Patel 08/21/1998 Y 0 N/A
289299 B Type compliance inspection Vijay Patel 08/15/1996 Y 0 N/A
Total Inspections: 8 Last Inspection: 06/19/2025
  
The current report was generated with data as of: 07/02/2025
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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