COMPLIANCE INFO_2024 ANNUAL MONITORING & MAINTENANCE RPT 4/1/2025

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SAMPLING AND ANALYSIS PLAN Compost facility monitoring and sampling for the Forward Landfill located within the Central Valley RWQCB Region was conducted by Del-Tech geotechnical support services (Del-Tech), in accordance with Attachment B - Monitoring and Reporting Program (MRP) specified in the General Waste Discharge Requirements (WDR) for Commercial Composting Operations State Water Resources Control Board Order WQ 2020-0012-DWQ (General Order) set forth by State Water Resources Control Board. This sampling and analysis plan describes the methods and procedures used to collect water quality samples at the Forward Landfill. Laboratory Analytical Methods Chemical analyses were performed by Pace Analytical, a state-certified laboratory. Detention pond samples were analyzed for the list of parameters summarized in Table 1, which also presents the laboratory analytical methods used during the sampling event. Copies of the certificates of analyses and Chain-of-Custody records for the samples collected this quarter are included with the analytical reports in Appendix E. Well Purging and Sampling The following sampling protocols listed below were generally followed during groundwater sampling operations: Upon arrival at the wellhead, each monitoring point was inspected for evidence of tampering and/or vandalism, and the well identification (I.D.) was recorded. The water level was measured directly using a weighted water-level indicator (sounder) to an accuracy of 0.01 foot. Prior to measuring the water level, the sounder was decontaminated using an Alconox® soap solution, followed by two rinses with deionized water. The wells were then sounded and the initial water level and the total depth of the well (if obtainable) were recorded on a Well Data Sheet. Detention Pond Sampling Detention pond sampling is performed by submerging laboratory-supplied sample containers or a decontaminated sampling dipper into the surface water channel at the designated sampling stations. At the time of sampling, a YSI 3560 Water Quality Meter ® (or equivalent) was used to measure field parameters (EC, pH, temperature, and turbidity) and recorded on a Well Data Sheet.  Sample Collection and Handling Each sample was collected in approved laboratory supplied sample containers filled completely and immediately capped, labeled, and placed in a cooler with ice. Collected samples, were placed immediately in an ice-filled cooler for transport to the state-certified testing laboratory. Samples were kept chilled (at about 4C) until delivery.