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' kn KLEINFELDER <br /> APPENDIX B <br /> TYPICAL KLEINFELDER FIELD PROTOCOL <br />' 13-1 FIELD PREPARATION <br /> Before performing work in the field, environmental staff reviews the scope of work, prepares a <br />' health and safety pian, coordinates the work to be done with their supervisor, assembles the <br /> necessary sample equipment containers, and checks, calibrates and cleans equipment to be used <br /> in the field Underground Service Alert (USA) is also contacted prior to field work with the <br />' marked boring locations and the scheduled date of dnliing, in addition, a utility locating firm is <br /> sometimes employed to check the boring locations <br /> B-2 DRILLING AND SUBSURFACE SOIL SAMPLING <br />' B-2.1 Drilling <br />' Soil borings are advanced using a truck-mounted drill ng, 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 Qualitative Field Screening <br /> .,An organic vapor detector, such as a Photovac TIP, using a photo-ionization detector (PID) or a <br /> Foxboro flame-ionization detector (FID), is used to provide a qualitative screening of each soil <br />' sample collected from the bonngs The organic vapor detector measures ionizable compounds in <br /> the air in parts per 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 or in a brass tube is exposed and screened with the <br /> organic vapor detector The vapor reading is noted as the field screening result <br />' For the protection of the drilling crew, the organic vapor detector also is used to measure the <br /> volatile concentrations in the breathing zone prior to and while drilling the borings Total <br />' ionizable hydrocarbon readings in excess of 1 ppmv may necessitate respiratory protection for <br /> the affected crewmembers This requirement is included in the complete field health and safety <br /> plan developed for the project prior to the start of fieldwork <br /> B-2.3 Collection of Soil Samples <br /> Soil samples are collected approximately every 5 to 10 feet for field screening and logging <br /> Samples are collected by advancing the boring to a point immediately above the desired sampling <br /> 20-1417-16 E04/ST02RO38 Page B-1 <br /> 02002 Kleinfelder,Inc June 7,2002 <br />