California Integrated Water Quality System (CIWQS 19.5.1)


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	California Integrated Water Quality System Project (CIWQS)

Facility At-A-Glance Report

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Place ID 871684

General Information
Region	Place ID	Place Name	Place Type	Place Address	Place County
2	871684	San Mateo County Event Center	Domestic Site NEC	2495 South Delaware San Mateo, CA, 94403	San Mateo

Related Parties

Party	Party Type	Party Name	Role	Classification	Relationship Start Date	Relationship End Date
621521	Person	Azalea Mitch	Contact		01/25/2021	08/21/2023
621520	Organization	City of San Mateo	Owner and Operator	City Agency	01/25/2021

Total Related Parties: 2

Regulatory Measures

Reg Measure ID	Reg Measure Type	Region	Program	Order No.	WDID	Effective Date	Expiration Date	Status	Amended?
442024	Enrollee - NPDES	2	NPDNONMUNIPRCS	R2-2017-0048	2_41NPG442024	01/22/2021	12/31/2023	Historical	N

Total Reg Measures: 1

Violations

Violation ID	Occurred Date	Violation Type	(-) Violation Description	Corrective Action	Status	Classification	Source
1088335	03/31/2021	CAT2	Zinc, Total Recoverable Monthly Average limit is 47 ug/L and reported value was 230 ug/L.	Cause: Intermittent flow and low flow rates in the treatment system may have caused the exceedances, where bacterial and algae growth was also observed. Correction: discharger plans to add carbon filtration vessels and metal specific media to address heavy metals such as zinc.	Violation	B	Report
1088333	03/08/2021	OEV	TPH as Motor Oil Maximum Daily (MDEL) limit is 100 ug/L and reported value was 551 ug/L.	Cause: Intermittent flow and low flow rates in the treatment system may have caused the exceedances, where bacterial and algae growth was also observed. Correction: discharger plans to add carbon filtration vessels and metal specific media to address heavy metals such as zinc.	Violation	B	Report
1088332	03/08/2021	CAT2	Diesel Oil Maximum Daily (MDEL) limit is 50 ug/L and reported value was 146 ug/L.	Cause: Intermittent flow and low flow rates in the treatment system may have caused the exceedances, where bacterial and algae growth was also observed. Correction: discharger plans to add carbon filtration vessels and metal specific media to address heavy metals such as zinc.	Violation	B	Report
1088334	03/08/2021	CAT2	Zinc, Total Recoverable Maximum Daily (MDEL) limit is 95 ug/L and reported value was 230 ug/L.	Cause: Intermittent flow and low flow rates in the treatment system may have caused the exceedances, where bacterial and algae growth was also observed. Correction: discharger plans to add carbon filtration vessels and metal specific media to address heavy metals such as zinc.	Violation	B	Report
1088337	03/01/2021	DMON	Violation of Attachment E section VIII.A - Discharger did not receive 5th day Start-up Phase samples within 120 hours. Samples were collected on February 26 and results were received on March 7, 2021.	None identified by the discharger in the report. However, it was addressed during a conversation with the discharger.	Violation	B	Report
1088330	02/28/2021	CAT2	Copper, Total Recoverable Monthly Average limit is 7 ug/L and reported value was 12 ug/L.	Cause: Intermittent flow and low flow rates in the treatment system may have caused the exceedances, where bacterial and algae growth was also observed. Correction: discharger plans to add carbon filtration vessels and metal specific media to address heavy metals such as zinc.	Violation	B	Report
1088329	02/28/2021	CAT2	Zinc, Total Recoverable Monthly Average limit is 47 ug/L and reported value was 290 ug/L.	Cause: Intermittent flow and low flow rates in the treatment system may have caused the exceedances, where bacterial and algae growth was also observed. Correction: discharger plans to add carbon filtration vessels and metal specific media to address heavy metals such as zinc.	Violation	B	Report
1088327	02/26/2021	OEV	TPH as Motor Oil Maximum Daily (MDEL) limit is 100 ug/L and reported value was 1200 ug/L.	Cause: Intermittent flow and low flow rates in the treatment system may have caused the exceedances, where bacterial and algae growth was also observed. Correction: discharger plans to add carbon filtration vessels and metal specific media to address heavy metals such as zinc.	Violation	B	Report
1088326	02/26/2021	CAT2	Diesel Oil Maximum Daily (MDEL) limit is 50 ug/L and reported value was 263 ug/L.	Cause: Intermittent flow and low flow rates in the treatment system may have caused the exceedances, where bacterial and algae growth was also observed. Correction: discharger plans to add carbon filtration vessels and metal specific media to address heavy metals such as zinc.	Violation	B	Report
1088328	02/26/2021	CAT2	Zinc, Total Recoverable Maximum Daily (MDEL) limit is 95 ug/L and reported value was 290 ug/L.	Cause: Intermittent flow and low flow rates in the treatment system may have caused the exceedances, where bacterial and algae growth was also observed. Correction: discharger plans to add carbon filtration vessels and metal specific media to address heavy metals such as zinc.	Violation	B	Report
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.

Total Violations: 10

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
CAT2 = Category 2 Pollutant (Effluent Violation for Group 2 Pollutant)	DMON = Deficient Monitoring
OEV = Other Effluent Violation

Enforcement Actions

Enf Id	Enf Type	Enf Order No.	Effective Date	Status
448311	Admin Civil Liability	R2-2022-1009	10/25/2022	Historical

Total Enf Actions: 1

Inspections

Attachment

Total Inspections: 0

Last Inspection: None

The current report was generated with data as of: 05/31/2024
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.

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