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APPENDIX A <br /> SUBSURFACE INVESTIGATION AND SOIL SAMPLING'P,ROTOCOL <br /> LI Drilling: The April.17 and 18, 200.0 subsurface investigation was performed using:a truck- <br /> mounted drill rig equipped with'a_6-inch O.D. hollow-stem auger. Soil samples were <br /> collected at approximately 5-foot depth-intervals using a' 1.5-inch diameter split-spoon <br /> ' sampler. <br /> Soils encountered in the boring were logged using the Unified Soil Classification System <br /> (ASTM D-2487). The logs of the boring, -as well" as a key to the classification of soil <br /> (Figure A-1), are included as part of this.appendix. <br /> Soil Sampling: Soil samples for laboratory analysis were collected in brass liners. The <br /> L ends-of the liners were covered in Teflon film, fitted with plastic end caps, taped, and <br /> E labeled with a unique identification number. The sampleswere then placed in an ice- <br /> chilled cooler, and transported to.a state-certified analytical laboratory with chain of <br /> L- custody documentation. <br /> Equipment Decontamination: All'-drilling and sampling equipment was cleaned in a <br /> L solrY gution of laborato fade deter ggent�and distilled water or steam cleaned before use at <br /> each sampling point. <br /> f <br /> U <br /> E LI <br /> L <br /> L <br /> t <br /> L <br /> .'■.I WMff CIATB Page A-I <br /> Environmental!Geotechnical!Engineering Services 864-76 <br />