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J. H. KLEINFELDER & ASSOCIATES <br /> File: PW86-2016/15 : 405 <br /> August 5 , 1986 <br /> Page 3 <br /> SCOPE OF WORK <br /> A total of three wells will be installed, one upgradient and <br /> two downgradient from the tank based on the suspected ground <br /> water flow direction. Our current intention is to locate these <br /> wells within 10 feet of the tank on the east , west , and north <br /> sides. The exact placement of the wells will be determined on <br /> site . <br /> Soil Sampling Procedure <br /> Borings for the wells will be drilled using 8-inch truck- <br /> mounted hollow-stem augers. The borings will be advanced to a <br /> depth 15 feet below the first encountered saturated zone or 5 <br /> feet into a confining clay zone of 5 feet thickness or greater . <br /> Our cost estimates are based on an assumed ground water depth of <br /> 15 feet requiring a well 30 feet total in depth. Should it be <br /> necessary to drill beyond a depth of 30 feet to properly install <br /> the wells , additional costs will be incurred. <br /> Soil samples will be collected at five foot intervals <br /> beginning at five feet below grade and screened on-site for the <br /> presence of volatile organic compounds using a photo-ionization <br /> detector (PID) . Should our PID screening detect volatile <br /> compounds for any of the samples from a boring, a designated <br /> representative of the Ogden Foods Company will be notified. <br /> Samples will be obtained by advancing the boring to a point <br /> immediately above the sampling depth and then driving a Modified <br /> California Sampler lined with three brass tubes into the soil . <br /> The sampler will be removed from the bottom of the boring and the <br /> bottom tube sealed with aluminum foil and caps. The samples will <br /> be immediately stored in an iced cooler . All samples collected <br /> will be handled under chain-of-custody control for sample <br /> integrity. <br /> To minimize sample contamination, all augers and associated <br /> equipment will be steam-cleaned prior to the drilling of each <br /> boring. Any equipment used for sample collection will be cleaned <br /> with trisodium phosphate and rinsed with distilled water . All <br /> drilling will be performed under the supervision of a JHK&A <br /> geologist who will log each boring as it is drilled. <br />