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)

Party At-A-Glance Report

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General Information
Party ID	Party Name	Party Classification	Mailing Address	Work Phone	Email/Website
S614744	Mount Diablo Unified School District	State Agency	1480 Gasoline Alley 1480 Gasoline Alley Concord, CA 94520	N/A	N/A

Related Places

Place ID	Place Name	County	Region	Place Type	Relationship to Party	Relationship Start Date	Relationship End Date
S869559	Oak Grove Middle School	Contra Costa	2	Facility	Discharger	01/11/2019	None
S866037	Mount Diablo ES Field Improvements	Contra Costa	2	Facility	Discharger	08/02/2018	None
S858367	Concord High School Athletic Fields	Contra Costa	2	Facility	Discharger	11/04/2016	None
S243565	Mt Diablo Unified Sch Dist Mai	Contra Costa	2	Facility	Discharger	09/01/2005	None

Total Related Places: 4

Related Parties

Party ID	Party Name	Party Type	Role/Relationship	Relationship Start Date	Relationship End Date	Classification
N/A	Chris Hansen	Contact	Owner Contact	N/A	N/A	N/A
N/A	John Willford	Contact	Owner Contact	N/A	N/A	N/A

Total Related Parties: 2

Regulatory Measures (non-enforcement)

Reg. Measure ID

Regulatory Measure Type

Relationship Start Date

Relationship End Date

Amended?

S181966

Industrial

2 07I018308

Active

INDSTW

2014-0057-DWQ

08/21/2003

None

Discharger

09/01/2005

None

Total Regulatory Measures: 1

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.
S892701	07/15/2025	SW - Late Report	Failure to submit the 2024-2025 Annual Report by 07/15/2025	Violation	N	Report	Mt Diablo Unified Sch Dist Mai	S181966	2014-0057-DWQ	Y
S884445	01/01/2023	SW - Late Report	Failure to submit required Level Report by the Jan.1, 2023 due date	Violation	N	Report	Mt Diablo Unified Sch Dist Mai	S181966	2014-0057-DWQ	Y
S880707	09/01/2021	SW - Late Report	Failure to submit required Annual Report 2021, 2020	Violation	N	Report	Concord High School Athletic Fields	S480420	2009-0009-DWQ	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: 3

*Click the "(+/-) Violation Description" link to expand and contract the violation description.

Enforcement Actions

Enforcement ID	Enforcement Type	Enf. Order No.	Title	Program	Effective Date	Status
S463296	Notice of Violation	None	2 07I018308	INDSTW	09/10/2025	Active
S457230	Notice of Violation	None	2 07I018308	INDSTW	08/08/2025	Active
S449388	Staff Enforcement Letter	None	2 07I018308	INDSTW	01/12/2023	Historical
S444628	Notice of Non-Compliance for Non-Filers	None	2 07C382140	CONSTW	11/09/2021	Active

Total Enforcement Actions: 4

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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