California Integrated Water Quality System (CIWQS 100.0) - Build Number: mainTrunk.mm.dd.yyyy.1


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	California Integrated Water Quality System Project (CIWQS)

Facility At-A-Glance Report

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Place ID S821877

General Information
Region	Place ID	Place Name	Place Type	Place Address	Place County
5S	S821877	Upper Sand Creek Basin Expansion	Facility	Approximately 2000 ft east of Deer Valley Road Antioch, CA, 94531	Contra Costa

Related Parties

Party	Party Type	Party Name	Role	Classification	Relationship Start Date	Relationship End Date
S606952	Organization	Contra Costa County Public Works Department	N/A	County Agency	03/06/2013

Total Related Parties: 1

Regulatory Measures

Reg Measure ID	Reg Measure Type	Region	Program	Order No.	WDID	Effective Date	Expiration Date	Status	Amended?
S435581	Construction	5S	CONSTW	2009-0009-DWQ	5S07C366192	04/17/2013		Terminated

Total Reg Measures: 1

Violations

Violation ID	Occurred Date	Violation Type	(-) Violation Description	Corrective Action	Status	Classification	Source
S894596	09/02/2025	FOP	Failure to obtain coverage under the 2022 CGP by 09/01/2025.		Violation	B	Internal Report
S880871	09/01/2021	LREP	Late 2020-2021 Annual Report		Violation	B	Report
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.

Total Violations: 2

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
FOP = Failure to Obtain Permit	LREP = Late Report

Enforcement Actions

Enf Id	Enf Type	Enf Order No.	Effective Date	Status
S459445	Notice of Violation		09/05/2025	Active
S444792	1st Annual Report Notice of Non-Compliance		10/01/2021	Active
S438740	1st Annual Report Notice of Non-Compliance		10/01/2020	Active
S421396	1st Annual Report Notice of Non-Compliance		10/30/2015	Historical
S417258	1st Annual Report Notice of Non-Compliance		10/03/2014	Historical

Total Enf Actions: 5

Inspections

Attachment

Total Inspections: 0

Last Inspection: None

The current report was generated with data as of: 05/20/2026
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.

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