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1 k" KLEINFELDER <br /> File No 20-3941-01 E01 <br /> August 20, 1996 <br /> A-2 3 Collection of Soil Samples <br /> Soil samples are collected approximately every 5 feet for field screening and logging Samples <br /> are collected by advancing the boring to a point immediately above the desired sampling depth <br /> ' and then driving (vertical borings) or pushing (slant borings) a Modified California Sampler, <br /> lined with three brass tubes, into the undisturbed soil The sampler is then removed from the <br /> bottom of the boring The ends of the bottom (third) tube are covered with Teflon and sealed <br /> ' with tight fitting plastic caps <br /> Each sample is individually labeled The label includes Klemfelder's name,job number, the date <br /> ' and time the sample was collected, the employee number of the individual who performed the <br /> sampling, and a unique five-digit sample identification number A custody seal may be placed <br /> on the sample in such a way that any attempt to tamper with the sample is easily visible <br /> Handlin <br /> A-2 4 Sample g <br /> ' After labeling, the sample is immediately stored in an iced cooler for transport to Kleinfelder's <br /> office sample control or to the analytical laboratory A Kleinfelder chain-of-custody form <br /> accompanies the cooler The chain-of-custody form includes Kleinfelder's name, address, and <br /> telephone number, the employee number of the individual who performed the sampling, the <br /> sample numbers, the date and time the samples were collected, the number of containers each <br /> ' sample occupies, and the analyses foi which the samples are being submitted, if any When the <br /> samples are delivered, the chain-of-custody form is signed by each person who handles the <br /> samples, including all Kleinfelder employees and the receiving employee of office sample <br /> ' control or the analytical laboratory <br /> A-2.5 Decontamination of Equipment <br /> ' To reduce theotential for cross-contamination, augers and associated equipment are steam <br /> P g <br /> cleaned prior to drilling each boring In addition, sampling equipment is cleaned with a <br /> ' trisodium-phosphate or laboratory detergent wash and rinsed with distilled water prior to <br /> collecting each soil sample <br /> A-2.6 Soil Cutting Disposal <br /> ' Drill cuttings are placed in 55-gallon drums or on top of and covered by polyvisquene for <br /> storage The soil is left on site for disposal by the site owner If requested, Kleinfelder can <br /> coordinate disposal of soil and water after analytical results are available <br /> i f <br /> ' 20-3941-01 E01 I MP960163 Page No B-2 Copyright 1996, Kleinfelder Inc <br />