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- <br /> 'aY'' - .. .Stw k °�3. � y�R f •h, . I',y-y ',. �eSa 6 -.'f.A hk x <br /> � '� •icy - - ,L az� � ��y +... z h �� _.�'% � :4 %�_� '. � <br /> r <br /> i <br /> J. H. KI_EINFELDER&ASSOCIATES <br /> :File: W-2006-1 <br /> March 18, 1986 <br /> Page 5 <br /> submitted for chemical analyses on a twenty four hour rush <br /> turnaround. The remaining eight samples were placed in <br /> refrigerated storage. From the other ten soil borings (B-7 <br /> through B-16), twelve soil samples were submitted for chemical <br /> analyses on a regular two week turnaround schedule and forty eight <br /> samples were placed in refrigerated storage. <br /> Soil samples were collected by advancing the boring to a <br /> point immediately above the sampling depth and then driving a <br /> modified California Sampler lined with three brass tubes into the <br /> undisturbed soil. The sampler was removed from tae bottom of the <br /> boring, and the bottom (third) tube was sealed with aluminum foil <br /> and a plastic cap. The sealed tube wits then immediately stored in <br /> an iced cooler. The refrigerated samples were then delivered to <br /> California Analytical Laboratories, Inc., with a chain-of-custody <br /> form. Completed copies of the chain-of-custody forms are included <br /> in Appendix A of this report. <br /> To minimize cross-contamination, all augers were steam <br /> cleaned prior to the drilling of each borehole. The sampler was <br /> cleaned in a trisodium phosphate rinse and distilled water rinse <br /> before collecting subsequent samples. <br /> C. Qualitative Field Screening <br /> -= — - - <br /> --_A---Pheatovac -TLP using _a--photoionizat-a on detector (PIB) <br /> used to screen each sample collected in the field. The PIP <br /> measures total volatile hydrocarbons in air in parts per million <br />