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KLEINFELDER <br /> I <br /> consist of scrap*Ing the top soil layer in the middle tube to expose fresh <br /> soil and scanning ,the Vapors emitted from the soil. The vapor reading will <br /> be noted and evaluated at the completion of the field work portion of the <br /> investigation to selec_ samples for chemical analyses. <br /> For the protection of the field crew, the PID will also be used to measure <br /> the fatal volatiles concentrations in the breathing zone prior to and <br /> during the drilling of the soil borings. Total ionizable hydrocarbon <br /> readings in excess of 5 ppm above baclaground in the breathing zone will <br /> - necessitate respiratory protection measures. This requirement will be <br /> outlined in a field safety plan for this project. <br /> 3 1:3:Soil:.Boring,",Gr�ut�rig <br /> Each soil boring will be completely grouted from the bottcan to the ground <br /> surface using a tremie pipe. The grout will consist of cement/bentonite <br /> grout. <br /> 3.1.4 Soil Boring location and Elevation Survey <br /> The ground surface. elevation will be surveyed to the nearest 0.01 foot at <br /> each soil boring location. The elevations will be referw"Bd to a nearby <br /> i <br /> USGS bench mark with a mean sea level datum. The location for each soil <br /> boring will be surveyed to the nearest 0.10 foot and refererK)ed to the <br /> tank excavation and a nearby building. <br /> 29-88-03 10 <br />