Laserfiche WebLink
Diamond Pet Food Processors of Ripon California,LLC Jarunny 28,2011 <br /> Sampling and Analysis Plan Page 8 of 9 <br /> 7. PROCEDURES <br /> The following section discusses the sampling procedures used for sampling of groundwater. Field <br /> Data Sheets and Chain-of-Custody Forms used during sampling are provided in the Appendix. <br /> 7.1 GROUNDWATER SAMPLING PROCEDURES <br /> To sample groundwater, the following procedures are followed: <br /> The static elevation of water standing in the well is taken using the electronic water level <br /> indicator. Water level measurements are collected from the measuring point (the top of casing). <br /> The depth of water is then recorded on the Field Data Sheets. <br /> The well is purged as described above until field parameters stabilize or until three water volumes <br /> are removed. Shallow wells are purged at approximately two gallons per minute (gpm) and <br /> deeper wells are purged at eight to nine gpm. <br /> During the purging process, field parameters are analyzed for temperature, pH, specific <br /> conductivity, and turbidity. All field parameter measurements are recorded on Field Data Sheets, <br /> including the time of the measurements and approximate volume purged at the time of <br /> measurements (Appendix). <br /> Once field parameters stabilize within 10% of the previous reading or three well volumes are <br /> removed, samples are collected from the pump outlet, labeled, and placed in an ice chest. <br /> Samples are delivered to a licensed California-certified environmental testing laboratory <br /> (currently BC Laboratory of Bakersfield, California)and are accompanied by Chain of Custody <br /> documentation. <br /> The electronic well sounder and all water testing equipment will be decontaminated between <br /> testing locations using an A]conox soap wash, a tap water rinse, and a deionized water rinse. The <br /> pumps, drop pipe, and sampling elbows are dedicated to each monitoring point, and do not <br /> require decontamination (Appendix). <br /> 010107.01 Lawrence S Associates <br /> Fi':ICLIENTSIDiamond Pel Foods101(1107.01-Grroundn,ater AlonilorisgIGiomidmaler Aloniloringl20101Sanpling and Analysis Plan.doac <br />