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
S28036	Matheson Postal Services	Privately-Owned Business	3609 Bradshaw Rd Ste H Sacramento, CA 95827	None	None

Related Places

Place ID	Place Name	County	Region	Place Type	Relationship to Party	Relationship Start Date	Relationship End Date
S242510	Matheson Postal Services	Alameda	2	Facility	Discharger	09/01/2005	None
S242511	Matheson Holdings Sacramento	Sacramento	5S	Facility	Discharger	09/01/2005	None
S902078	Matheson Postal Services	San Bernardino	8	Facility	Discharger	02/10/2022	None
S902613	Matheson Postal Services Highland	San Bernardino	8	Facility	Discharger	03/02/2022	None

Total Related Places: 4

Related Parties

Party ID	Party Name	Party Type	Role/Relationship	Relationship Start Date	Relationship End Date	Classification
N/A	Mark Matheson	Contact	Owner Contact	N/A	N/A	N/A
N/A	Valerie Tullos	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?

S180793

Industrial

2 01I005913

Active

INDSTW

2014-0057-DWQ

04/16/1992

None

Discharger

09/01/2005

None

Total Regulatory Measures: 1

Violations within the past year

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.
S892757	07/15/2025	SW - Late Report	Failure to submit the 2024-2025 Annual Report by 07/15/2025	Violation	N	Report	Matheson Holdings Sacramento	S200696	2014-0057-DWQ	Y
S892716	07/15/2025	SW - Late Report	Failure to submit the 2024-2025 Annual Report by 07/15/2025	Violation	N	Report	Matheson Postal Services	S180793	2014-0057-DWQ	Y
Report defaults to display violations within the last year. Click here to see last five years of violations. Refer to the Interactive Violation Report for more data.

Total Violations: 2

*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
S457286	Notice of Violation	None	5S34I005912	INDSTW	08/08/2025	Active
S457245	Notice of Violation	None	2 01I005913	INDSTW	08/08/2025	Active
S438032	1st Annual Report Notice of Non-Compliance	None	2 01I005913	INDSTW	07/21/2020	Historical
S415146	1st Annual Report Notice of Non-Compliance	None	2 01I005913	INDSTW	01/30/2014	Historical
S408589	13267 Letter/Order	None	5S34I005912	INDSTW	04/13/2012	Historical
S401262	Staff Enforcement Letter	None	5S34I005912	INDSTW	10/23/2009	Historical
S400531	1st Annual Report Notice of Non-Compliance	None	5S34I005912	INDSTW	07/23/2009	Historical
S347635	Staff Enforcement Letter	None	5S34I005912	INDSTW	05/01/2008	Active
S310064	Notice of Violation	None	5S34I005912	INDSTW	09/02/2005	Active

Total Enforcement Actions: 9

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: 04/03/2026
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.

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