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SAMPLING PROTOCOL <br /> Drilling <br /> Permits were obtained for the borings befog e dnlLng began The soil bone_s "ere <br /> accomplished using a mobile mounted dulling ng employing the use of a hollow stern <br /> flight auger no less than. 3'/a inch i d and 8 7.18 o d <br /> All drilling equipment was thoroughly steam cleaned before dnliing began, to pre4'c:-,it <br /> the introduction of contamination from off siLte, anc between borings to prevtmt crass <br /> contamination <br /> The borings were logged under the direct supervision of a registered geologist _sung the <br /> Unified Soil Classification System (Appendix C) The color, texVj e, rnoisture, <br /> plasticity (if applicable), consistency of the earth materials, pertinent soyil or ordre>..k <br /> characteristics, and any evidence of contamination were noted All water-'Dean:--. zones <br /> and the depths at which they were encountered were noted on these logs <br /> All borings were drilled in such a manner as to prevent cross contamination Between <br /> strata Hydropunch samples were taken at the soil/groundwater interf=ace, and €lie <br /> borings were then terminated with a cement and three percent (3%) Bentonite mixture <br /> after hole plug was placed in the bottom of the borings <br /> Soil Sampling <br /> All soil sampling equipment was thoroughly steam cleaned before and Jetwetm <br /> sampling to Prevent cross contamination Relatively undisturbed soil sampres �ere <br /> taken at intervals of not more than five feel (5" in order to evaluate TJ)e si?nsurfa.:e <br /> materials <br /> The soil samples were taken using a California Modified Split Spoon sampler v.ith <br /> brass liners The sampler was driven continuously b-. a wire line hammer <br /> The laboratory samples did not have head space and were immediately sealer_ u, their <br /> liners using aluminum foil lined plastic caps. The remaining sample was J emo, ed fro'n <br /> its liner to be used as an aide to the on-site geologist in logging the rm ateii.: a►_ Mat <br /> depth <br /> Soil samples collected for analysis were analyzed using EPA method 3550/L L TFT for <br /> total extractable petroleum hydrocarbons, EPA method 8020 for BTX&E compouiids <br /> and EPA method 5030/LUFT for gasoline The mJiniinurn detection limits urea %titre <br /> 5 0 mg/kg for kerosene and diesel, 50 0 me/kg for motor oil, 5 0 µg/kg for :'TXS E, <br />