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Home My WebLink About11.b. Receive information on Industrial Users found to be in significant non-compliance for 2023Page 1 of 3 Item 11.b. LICENTRAL SAN February 1, 2024 FROM: COLLEEN HENRY, ENVIRONMENTAL COMPLIANCE PROGRAM ADMINISTRATOR REVIEWED BY: LORI SCHECTEL, ENVIRONMENTAL & REGULATORY COMPLIANCE DIVISION MANAGER GREG NORBY, DEPUTY GENERAL MANAGER - OPERATIONS ROGER S. BAILEY, GENERAL MANAGER SUBJECT: RECEIVE INFORMATION ON INDUSTRIAL USERS OF CENTRAL CONTRA COSTA SANITARY DISTRICT'S PUBLIC SEWER SYSTEM FOUND TO BE INSIGNIFICANT NON-COMPLIANCE FOR 2023 Federal pretreatment regulations establish standards that apply to wastewater agencies with approved pretreatment programs. One of these standards specifies criteria to evaluate violations at regulated businesses to determine if the business is in Significant Non -Compliance (SNC). When a business is determined to be in SNC, Central Contra Costa Sanitary District (Central San) is required to report this status in reports submitted to the Regional Water Quality Control Board and publish information about the violation in the newspaper at least annually. For the calendar year 2023, three businesses were determined to be in SNC: Compliance sampling conducted at the Acme Fill Corp. from their wastewater discharge resulted in violations of Federal Gross Beta Radioactivity limits once during the second quarter reporting period and Federal Gross Alpha Radioactivity limits once during the third quarter reporting period. I n both instances, the level of exceedance met the Technical Review Criteria established for SNC. Central San issued Notices of Violation (NOVs) for the violations. The I U stated the landfill has never accepted radioactive materials and does not know of any other sources that could have caused the high results. The I U and Central San temporarily increased monitoring for both parameters since no obvious source has been located. Resampling demonstrated that the I U returned to compliance. Bay Area Rapid Transit- Concord Shop failed to provide their required Periodic Compliance Report within 45 days after the due date during the third quarter reporting period. The late report met the criteria established for SNC. Central San issued a Notice of Violation (NOV) for the violation. Central San is working with the I U to submit a complete Periodic Compliance Report. February 1, 2024 Regular Board Meeting Agenda Packet - Page 102 of 130 Page 2 of 3 Compliance sampling conducted of the discharge from the Life Science Building at Diablo Valley College resulted in violations of Central San's Local Discharge Limit (LDL) for copper and mercury once during the first quarter reporting period. Additionally, compliance sampling conducted of the discharge from the Physical Science Building resulted in a violation of Central San's Local Discharge Limit (LDL) for Total Toxic Organics during the third quarter reporting period. I n each instance, the level of exceedance met the level of exceedance established for S NC. Central San issued Notices of Violation (NOVs) for the violations. The I U investigated potential sources of copper and mercury within the Life Science laboratory operations and did not locate any significant sources. The I U flushed the waste lines from the Life Science Building to remove potential legacy sources of copper and mercury. The I U investigated sources of Total Toxic Organics within the Physical Science building and determined the event was likely due to an accidental discharge; they will educate staff and students on proper collection procedures. Resampling demonstrated that the I U returned to compliance in both the Life Science and Physical Science buildings. Environmental Compliance staff will continue to work with these businesses to maintain compliance with the pretreatment standards. Attached is the SNC notice scheduled for publication in the Contra Costa Times and San Ramon Valley Times, the East Bay Times circulation areas, in early February 2024. Strategic Plan Tie -In GOAL TWO: Environmental Stewardship Strategy 1 - Achieve compliance in all regulations ATTACHMENTS: 1. Notice of Significant Non-Compliance_2023 February 1, 2024 Regular Board Meeting Agenda Packet - Page 103 of 130 Page 3 of 3 PUBLIC NOTICE CENTRAL CONTRA COSTA SANITARY DISTRICT NOTICE OF SIGNIFICANT NON-COMPLIANCE FOR 2023 Notice is hereby given that pursuant to the federal regulations contained in 40 CFR 403.8.f(2)(vii), Central Contra Costa Sanitary District (Central San) is required to publish the names of all Industrial Users (IUs) of Central San's public sewer system that were determined to be in Significant Non -Compliance (SNC) with applicable pretreatment standards or other pretreatment requirements during the 2023 calendar year. Federal regulations establish objective criteria for Central San to use to determine if an IU is in SNC. Discharge Quality Violations The following IUs were found to have discharged process wastewater in violation of Central San's Local Discharge Limits in a manner that met the definition of SNC. Industrial User Nature of Violation Follow-up Action Taken Acme Fill Corporation Limit violations for Central San issued Notices of Violation (NOVs) 950 Waterbird Way Radioactivity- Gross Alpha & for the violations. The IU stated the landfill has Martinez, CA 94553 Gross Beta at concentrations never accepted radioactive materials and does that met the SNC Criteria not know of any other sources that could have [Technical Review Criteria] caused the high results. The IU and Central San temporarily increased monitoring for both parameters since no obvious source has been located. Resampling demonstrated that the IU returned to compliance. Diablo Valley College Limit violations for mercury (1) Central San issued Notices of Violation (NOVs) 321 Golf Club Road and copper (1) in the for the violations. The I investigated potential Pleasant Hill, CA 94523 discharge from the Life sources of copper and mercury within the Life Science Building and for Total Science laboratory operations and did not locate Toxic Organics (1) in the any significant sources. The IU flushed the discharge from the Physical waste lines from the Life Science Building to Science building in remove potential legacy sources of copper and concentrations that met the mercury. The IU investigated sources of Total Toxic SNC criteria [Technical Organics within the Physical Science building and Review Criteria]. determined the event was likely due to an accidental discharge; they will educate staff and students on proper collection procedures. Resampling demonstrated that the IU returned to compliance in both the Life Science and Physical Science buildings. Reporting Violations The following IUs failed to provide required reports within 45-days after the due date, which meets the definition of SNC. Industrial User Nature of Violation Follow-up Action Taken Bay Area Rapid Transit Failure to meet reporting Central San issued a Notice of Violation (NOV) 1045 San Miguel Road requirement by deadline for a for the violation. Central San is working with Concord, CA 94518 Periodic Compliance Report; the IU to submit a complete Periodic late report met SNC Criteria. Compliance Report. February 1, 2024 Regular Board Meeting Agenda Packet - Page 104 of 130