Laserfiche WebLink
Brendan Kenny <br />Central Valley Regional Water Quality Control Board <br />January 15, 2024 <br />www.arcadis.com <br />Forward Landfill 4Q23 CAP Rpt_01152024 <br />2/4 <br />Violations of the CAO <br />CAO Task 9.a indicates that Quarterly Progress Reports shall include a description of any violations of the CAO <br />during the relevant quarter. During the period of October 1 through December 31, 2023, a Notice of Violation <br />(NOV) was received on October 6, 2023 for failure to immediately verbally notify the Regional Board of a release <br />and provide a written notification in 7 days1. A response to the NOV was submitted by Forward, Inc. on October <br />11, 20232 and October 13, 20233. <br />The October, November, and the first December 2023 effluent samples were taken from GAC Unit #2, as it was <br />the final stage in the GWTS before the point of compliance for the Order. Following the carbon changeout on <br />December 14, 2023, the second December 2023 sample was taken from GAC Unit #1, after it became the final <br />stage in the GWTS. Low concentrations of VOCs (up to 4.87 micrograms per liter [µg/L] of total VOCs) were <br />detected in the six influent samples. No VOCs were detected above the practical quantitation limit (PQL) in the <br />effluent samples collected at the point of compliance for the order. <br />The concentration limit for VOCs at the point of compliance is non-detect. Since all effluent samples were non- <br />detect at the PQL, the GWTS was in compliance with the Order during the Fourth Quarter 2023 reporting period. <br />The Del-Tech semi-monthly field inspection forms are included in Attachment A. Laboratory analyses collected <br />were conducted by Pace; Pace analytical reports are included in Attachment B. <br />Remediation Systems Operations and Performance Summary <br />CAO Task 9.a indicates that Quarterly Progress Reports shall include information on remedial system operation <br />and performance during the relevant quarter. Operational and performance information for the GWTS and the <br />landfill gas collection and control system are provided below. <br />Groundwater Extraction and Treatment System <br />A GWTS is operated at the Austin Road Unit, to address detections of volatile organic compounds (VOCs) in <br />groundwater. Five groundwater extraction wells, designated EW-1, EW-2, EW-3R, EW-4, and EW-5 are currently <br />operated as part of the GWTS. A sixth well, EW-3, is no longer operated due to low extraction rates; it was <br />replaced by deeper well EW-3R. <br />The extracted groundwater is currently treated by two 10,000-pound granular activated carbon (GAC) vessels, <br />which were installed in January 2020. Historically, the extracted groundwater was treated by an air stripper <br />(through May 2018) and then by four 2,000-pound GAC vessels (through November 2018) and then by two 6,000- <br />pound GAC vessels (through January 2020). The treated effluent is discharged to a recharge basin adjacent to <br />the Austin Road Unit. <br />During the Fourth Quarter of 2023, the GWTS was inspected and monitored semimonthly by Del-Tech <br />Geotechnical Support (Del-Tech) of Oakdale, California. The Del-Tech semi-monthly field inspection forms are <br />included in Attachment A. <br />1 California Regional Water Quality Control Board, Central Valley Region. 2023. Notice of Violation of Waste Discharge <br />Requirements (WDRs) R5-2014-0006 – Forward Inc. and Republic Services, Inc. – Forward Landfill, San Joaquin County, <br />GeoTracker No: L10008827999. October 6. <br />2 Forward Landfill. 2023. Forward Landfill: Notification of Release and Notice of Violation. October 11. <br />3 Forward Landfill. 2023. Response to Notice of Violation of Waste Discharge Requirements (WDRs) R5-2014-0006 and <br />Notification of Release – Forward Inc. – Forward Landfill, San Joaquin County, Geotracker No: L10008827999. October 13.