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KLEIN FELDER <br /> APPENDIX B <br /> TYPICAL KLEINFELDER FIELD PROTOCOL <br /> B-I FIELD PREPARATION <br /> Before performing Nvoik in the field environmental staff reviews the scope of work prepares a <br />' health and safety plan, coordinates the woik to be done with their supervisor, assembles the <br /> necessary sample equipment containeis_ and checks calibrates and cleans equipment to be used <br /> in the field Undei gi ound Seivice Aleft (USA) is also contacted prior to field wo>k with the <br /> marked boring locations and the scheduled date of drilling, in addition, a utility locating firm is <br /> sometimes employed to check the boring locations 4 <br /> B-2 DRILLING AND SUBSURFACE SOIL SAMPLING <br /> B-2I Drilling <br /> Soil boiings ale advanced using a truck-mounted drill rt„ equipped with hollow stem augers <br /> Subsurface soil samples are collected from the soil borings While drilling, an experienced <br /> environmental geologist classifies the soil logs the stratigraphy of the borings, and collects soil <br /> samples <br /> B-2 2 Oualitative Field Sereenin�* <br /> 1 An organic or detector, such as a PhotovaL, TIP using a photo-ionization detectoi (PID) or a <br /> g vapor <br /> Foxboro flame-ionization detector (FID) is used to provide a qualitative screening of each soil <br /> sample collected atom the borings I-he oiganic vapor detectoi measures ionizable compounds in <br /> the air in parts pet million by volume (ppmv) Field calibration is performed using a calibrated <br /> span gas such as 100 ppm isobutylene Ambient air is used to set the instrument to zero The <br /> soil contained in the cone of the sampler of in a brass tube is exposed and screened with the <br /> organic vapor detectoi The vapor ie-Lig is noted as the field scieening result <br /> For the protection of the drilling ciew the oiganic vapor detector also is used to measure the <br /> volatile concentrations in the breathing, zone piior to and while drilling the borings Total <br /> ionizable hydiocaibon readings in e\ceSS of I ppmv may necessitate respiratory protection foi <br /> the affected crew membeis This iequiiement is included in the complete field health and safety <br /> plan developed foi the project prioi to the start of field work <br /> 1 <br /> • <br /> 20-1108-24 1;01/201912120 Page B-l <br /> ©1999,Kleinfd&r, Inc. February S, 1999 <br />