Laserfiche WebLink
' h'q KLEINFELDER <br /> APPENDIX B <br /> TYPICAL KLEINFELDER FIELD PROTOCOL <br /> 1 <br /> B-1 FIELD PREPARATION r <br /> Before performing work in the field, environmental staff reviews the scope of work, prepares a <br /> health and safety plan, 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 /> tmarked boring locations and the scheduled date of drilling, in addition, a utility locating firm is <br /> sometimes employed to check the boring locations <br /> B-2 DRILLIN AND UB <br /> G N SUBSURFACE URFA <br /> CE SOIL SAMPLING <br /> ' B-21 Drilling <br /> ' Soil borings are advanced using a truck-mounted drill rig, equipped with hollow stem augers <br /> Subsurface soil samples are collected from the soil bonngs While drilling, an experienced <br /> environmental geologist classifies the soil, logs the stratigraphy of the borings, and collects soil <br /> Msamples <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 borings 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 dnlhng crew, the organic vapor detector also is used to measure the <br /> volatile concentrations in the breathing zone prior to and while drilling the bonngs Total <br /> ionizable hydrocarbon readings in excess of i ppmv may necessitate respiratory protection for <br /> ' the affected crew members This requirement is included in the complete field health and safety <br /> plan developed for the project prior to the start of field work <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 <br /> • sampling depth and then driving (vertical bonngs) or pushing (slant bonngs) a 2-inch diameter <br /> Modified California Split-Spoon Sampler, lined with three 6-inch long brass tubes, into the <br /> I <br /> 28699 E01 I ST03R759 Page B-I <br /> ' Copyright 2003,Kleinfelder, Inc May 20,2003 <br />