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J. H. KLEINFELDER & ASSOCIATES <br /> _ I <br /> File: W-2001-1 <br /> January 29 , 1986 <br /> Page 7 <br /> the pond and two wells down-gradient. Monitoring well No. 3 was <br /> _ located northwest of the pond and monitoring wells No. 1 and 2 <br /> �.= <br /> completed to a depth of <br /> southeast of the pond. The borings were <br /> 63 feet with soil sampling for geologic information at <br /> approximately 10 foot intervals or when drilling indicated a <br /> potential change in geology- Logs for all borings are presented <br /> as Plates 3. 1 to 3.9. <br /> All drilling was conducted using truck-mounted drilling equipment <br /> with eight-inch-diameter hollow-stem augers. The augers were <br /> steam cleaned prior to use and between borings to minimize the <br /> obtained by <br /> potential for cross-contamination. Soil samples were <br /> driving a two-inch I.D. Modified Porter sampler, internally <br /> sleeved with brass liners , into the undisturbed soil. B thethe <br /> to <br /> ach <br /> sampler and brass liners were also steam cleaned prior <br /> for cross-contamination <br /> soil sampling to reduce the potential <br /> the brass liners were removed <br /> between samples. After sampling, <br /> from the sampler, the ends covered with aluminum foil, and sealed <br /> with tight fitting plastic caps. All samples were labeled, <br /> placed in an iced cooler, and maintained in refrigerated storage. <br /> The samples were held and documented under chain-of-custody <br /> procedures. The samples were collected and maintained under <br /> chain-of-custody protocol pending a later decision on chemical <br /> analyses of the soil samples. <br /> 1 <br />