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I <br /> 4 <br /> ` k'9 KLEINFFLDER <br /> ;r <br /> 4 i <br /> A-3.3 Sample Handling <br /> €f <br /> After labeling, the sample is immediately stored in an iced cooler for transport to the analytical <br /> laboratory. The label includes Kleinfelder's name,job number, the date and time the sample was <br /> , collected, the employee number of the individual who performed the sampling, and a unique <br /> five-digit sample identification number. A custody seal is also placed on the sample in such a <br /> way that any attempt to tamper with the sample is easily visible. An example of a sample label <br /> and custody seal are attached at the end of this appendix. <br /> A Kleinfelder chain-of-custody form is attached to the cooler. The chain-of-custody form <br /> includes Kleinfelder's name, address and telephone number, the employee number of the <br /> individual who performed the sampling, the sample numbers l the date and time the samples were <br /> collected, the number of containers each sample occupies, and the analyses for which the <br /> samples are being submitted. The chain-of-custody form is 'signed by each person who handles <br /> the samples, including all Kleinfelder employees and the receiving employee of the analytical <br /> laboratory when the samples are delivered. An example of the chain-of-custody form is <br /> attached. <br /> A-3.4 Equipment Decontamination <br /> To reduce the potential for cross-contamination between wells, all developing and sampling a <br /> equipment is washed in a trisodium phosphate solution and rinsed in distilled water or steam <br /> cleanedrior to use in the next monitoring well. <br /> p g �i <br /> :f <br /> f <br /> A-3.5 Well Survey 1 <br /> r , The locations of soil borings and .monitoring wells and the elevation of the top of the PVC <br /> �+ casings is usually surveyed and tied into permanent markers, if readily available. Survey <br /> accuracy is 0.1 foot for the "x" and "y" coordinates and .01 foot for the "z" coordinate. The <br /> depth to static ground water is measured from a set location'at the top of the PVC casing. The <br /> depth of water is then subtracted from the elevation of the !'top of the well casing to provide a <br /> ground water elevation for each monitoring well location. <br /> �i <br /> ? t6 <br /> !t <br /> �i <br /> :i <br /> :f <br /> i <br /> { 20-4659-0l.EOI/201 IR1442 Page A-5 <br /> ®2001,Kleinfelder, Inc. November 28,2001 <br /> 'F <br /> I� <br />