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n <br />SAMPLING AND ANALYSIS PLAN <br />Water quality monitoring and sampling for the French Camp Landfill located within the <br />Central Valley RWQCB Region was conducted by Del -Tech Geotechnical Support <br />Services. Sampling and analyses were performed in general accordance with the <br />RWQCB Order No. R5-2007-0046 issued specifically for the site. A brief summary of <br />the protocols for sample collection is presented below. <br />Chemical analyses were performed by BC Laboratories Inc. which is a state -certified <br />laboratory. Groundwater and surface water samples were analyzed for the list of routine <br />parameters listed in WDR Order No. R5-2007-0046. Table 1 summarizes site monitoring <br />parameters, analytical methods, sample bottle requirements, and holding times. Water <br />quality samples were also analyzed in the field for turbidity, temperature, specific <br />conductance, and pH and recorded on well data sheets. Copies of the certificates of <br />analyses and Chain -of -Custody records for the samples collected this quarter are included <br />in Appendix C. <br />Groundwater Sampling <br />The sampling protocols listed below were generally followed during groundwater <br />sampling operations: <br />• Upon arrival at the wellhead, each monitoring point was inspected for evidence of <br />tampering and/or vandalism, and the well identification (I.D.) was recorded. <br />• Prior to sampling the water quality meter will be calibrated daily using standardized <br />solutions and recorded on a field calibration form. <br />• The water level was measured directly using a weighted water -level indicator <br />(sounder) to an accuracy of 0.01 foot. Prior to measuring the water level, the sounder <br />was decontaminated using an Alconox® soap solution, followed by two rinses with <br />deionized water. The wells were then sounded and the initial water level and the total <br />depth of the well (if obtainable) were recorded on a Well Data Sheet. <br />Groundwater Sampling Using Non -Dedicated Equipment <br />• For wells with non -dedicated sampling equipment, up to three casing volumes (under <br />optimal conditions) of water were purged prior to sampling. Based on the measured <br />depth to water, the total depth of the well, and the known casing diameter, a well <br />casing volume was calculated using the following equation: <br />1 Geo -Logic Associates <br />