ARCHIVED REPORTS_COMBINED ANNUAL AND SECOND-HALF 2012 GROUNDWATER MONITORING REPORT 01-31-2013

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Diamond Pet Food Processors of Ripon California,LLC January 31,2013 Sampling and Analysis Plan Page 4 of 3 To comply with the field parameter monitoring requirements, an Oakton 10 pH/EC/temperature water-quality meter or equivalent will be used to monitor pH, conductivity, and temperature,by immersing the probes' analysis device directly in water, and a LaMotte 2020 turbidimeter or equivalent will be used to monitor turbidity levels by filling a water cell and inserting the cell into the instrument. 6. SAMPLING PERSONNEL All sampling will be conducted under the direct supervision of a California Professional Geologist or Engineer under contract to the Owner. Sampling personnel will include geologists, engineers, or technicians with at least six months of training and experience in the use and calibration of monitoring instrumentation. Training will include instruction and practice of operation of monitoring equipment overseen by experienced personnel in accordance with the manufacturer's manuals and other guidance documents. 7. PROCEDURES The following section discusses the sampling procedures used for sampling of groundwater. Field Data Sheets and Chain-of-Custody Forms used during sampling are provided in the Appendix. 7.1 GROUNDWATER SAMPLING PROCEDURES To sample groundwater, the following procedures are followed: The static elevation of water standing in the well is taken using the electronic water level indicator. Water level measurements are collected from the measuring point (the top of casing). The depth of water is then recorded on the Field Data Sheets. The well is purged as described above until field parameters stabilize or until three water volumes are removed. Shallow wells are purged at approximately two gallons per minute (gpm) and deeper wells are purged at eight to nine gpm. During the purging process, field parameters are analyzed for temperature, pH, specific conductivity, and turbidity. All field parameter measurements are recorded on Field Data Sheets, including the time of the measurements and approximate volume purged at the time of measurements (Appendix). Once field parameters stabilize within 10% of the previous reading or three well volumes are removed, samples are collected from the pump outlet, labeled, and placed in an ice chest. Samples are delivered to a licensed California-certified environmental testing laboratory (currently BC Laboratory of Bakersfield, California) and are accompanied by Chain of Custody documentation. The electronic well sounder and all water testing equipment will be decontaminated between testing locations using an Alconox soap wash, a tap water rinse, and a deionized water rinse. The pumps, drop pipe, and sampling elbows are dedicated to each monitoring point, and do not require decontamination (Appendix). 010107.03 Lawrence&Associates W.•I CLIENYMDiamond Pct Foods 1010107.01-Groundwater MonitoringlGroundwater Monitoringl20JZ2012 Sampling and Analysis Plan.docx