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Field Practices and Procedures <br />' Page 3 <br /> . typically represent the highest PTD reading recorded for each soil boring and the sample <br />' dust above first-encountered groundwater <br /> Stockpiled Drill Cuttings and Soil Sampling <br />' Soil generated during drilling operations will be stockpiled on-site The stockpile will be <br /> set on and covered by plastic sheeting in a manner to prevent rain water from coming in <br /> contact with the soil Prior to collecting soil samples, Stratus personnel will calculate the <br /> approximate volume of soil in the stockpile The stockpile will then divided into sections, <br /> if warranted, containing the predetermined volume sampling interval Soil samples will <br />' be collected at 0 5 to 2 feet below the surface of the stockpile Four soil samples will be <br /> collected from the stockpile and composited into one sample by the laboratory prior to <br /> analysis The soil samples will be collected in cleaned brass, two by six inch tubes using <br />' a hand driven sampling device To reduce the potential for cross-contanlination between <br /> samples, the sampler will be cleaned between each sampling event Upon recovery, the <br /> sample container will be sealed at each end with Teflon sheeting and plastic caps to <br />' minimize the potential of volatilization and cross-contanlination prior to chemical <br /> analysis The soil sample will be labeled, placed on ice, and delivered to a state-certified <br /> analytical laboratory, along with the appropriate chain-of-custody documentation <br />' Cone Penetrometer Tool (CPT) Testing <br /> The CPT method consists of advancing a cone-tipped cylindrical probe (1 7 inches in <br /> 1 • diameter) into the ground while simultaneously measuring the resistance to penetration <br /> The CPT method determines soil lithology by comparing the force (cone bearing <br /> pressure) required to advance the probe (Qt) to the friction ratio (Rf) (Rf equals sleeve <br /> friction [FS] divided by the probe tip load, times the penetration pore pressure [Udl) <br /> Computer generated CPT logs will be plotted in the field, providing the field <br />' representative a graphical log of subsurface soil lithology A CPT test data report, which <br /> will include logs of all CPT data, graphical geologic logs, and additional information on <br /> the CPT technique, will be submitted with the final report CPT testing will be <br /> performed in accordance with American Society of Testing and Materials (ASTM) <br /> Method D3441 <br />' The cone testing will be performed inside of a grout collar installed at the ground surface <br /> The grout collar will allow the CPT contractor to backfill the boring as the steel rods are <br /> retracted from the hole Continuous grouting will prevent cross contamination of water <br />' bearing zones that can occur through an open borehole The boring will be backfilled to <br /> surface grade An asphalt patch will be placed over the borehole <br /> Direct Push Technology, Water Sampling <br /> A well known example of direct push technology for water sampling is the Hydropunch® <br /> For the purpose of this field method the term hydropunch will be used instead of direct <br /> • push technology for water sampling <br /> 1 <br />' M\Field Practices\Field P&P with CPT doc <br />