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). H. KLEIN FELDER & ASSOAT'ES <br />File No. W-2008-1 <br />November 14, 1985 <br />Page 3 <br />foot above the perforated section and one foot bentonite plug was placed above <br />the sandpack to provide a seal against surface water infiltration. The well was <br />placed inside a locking Brooks box to protect against vandalism. <br />C. Sampling Procedure. <br />Soil samples were collected at the time of drilling for chemical analyses <br />at 5 -foot intervals from 10 feet to 45 feet below the ground surface. After <br />the sample was removed from the boring, the soil sample was immediately <br />placed in a refrigerated container and delivered to California Water Labs for <br />analytical testing. All samples were screened in the field with a <br />photoionization detector (PID) for qualitative indication of volatile <br />hydrocarbons. PID values are shown on the boring logs on Plate IV. <br />Selection of samples for quantitative chemical analysis was based on field <br />screening and recommendations of the County Environmental Health <br />representative present at the site during the time of sampling. A chain -of - <br />custody form was utilized by Kleinfelder and accompanied the samples to the <br />laboratory. Copies of the chain -of -custody forms are included in the <br />Appendix. <br />D. Water Sampling Procedure. <br />A water sample was collected from monitoring well (MW -1) on October <br />19, 1985. The well was sampled with a teflon bailer and the sample was <br />visually inspected for product layer and sheen. No product layer or sheen <br />was observed in or on the bailer. The well was then developed until the <br />water was relatively clear. After development, approximately five well <br />volumes were removed and a water sample was collected in sample bottles <br />provided by the testing laboratory. The sample bottles were immediately <br />sealed and placed in a refrigerated container and delivered to California <br />UN <br />