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31 October 2007 <br /> AGE-NC Project No. 07-1524 <br /> Page 6 of']0 <br /> 4.0. FIELD PROCEDURES <br /> All field procedures will be overseen by an AGE representative under the supervision of a California <br /> Professional Geologist. Procedures for soil and ground water sampling and well installation and <br /> development are described below. <br /> 4.1. CPT SOIL BORING <br /> The CPT soil boring will be advanced to a depth of 60 feet bsg utilizing a 25-ton truck-mounted CPT <br /> drill rig equipped with a hydraulic ram and 2-inch diameter hollow-stem rods to advance soil <br /> borings. The initial soil boring will be a cone penetrometer, advanced to the desired depth. Soil <br /> parameters such as cone bearing, sleeve friction, friction ratio and pore water pressure will be <br /> measured as the cone penetrometer is advanced. Rinseate generated as part of the drilling activities <br /> will be containerized in properly labeled DOT-approved 55-gallon drums and stored on-site in an <br /> area lacking public access. Disposal alternatives will be evaluated at a later date based on laboratory <br /> results of rinseate samples. <br /> An adjacent soil boring will be advanced to selected depth for the collection of discrete soil les, <br /> based on the CPT soil data. Soil samples will be collected utilizing a 2-inch diameter piston soil <br /> sampling assembly loaded with pre-cleaned brass sleeves. Upon soil sample retrieval,a brass sleeve <br /> will be removed from the sampler. The ends of the brass sleeve will be immediately covered with <br /> Teflon or aluminum sheets, sealed with plastic end caps, secured with tape and immediately placed <br /> in a chilled container for transportation to a DHS-certified laboratory. Each sample sleeve will be <br /> labeled with the location, boring designation, depth, time, date and sampler's initials. <br /> Soil sample delicates will be monitored for the presence of organic vapor using a photo-ionization <br /> -- <br /> detector (PID: Thermo Environmental 58013, 10.0 eV, calibrated to isobutylene) and the readings <br /> will be recorded on boring logs. Soil sample duplicates will be visually described using the Unified <br /> Soil Classification System (USCS) and the descriptions will be recorded on the boring logs. <br /> Additional adjacent,dedicated borings will be advanced for discreet groundwater sample collection. <br /> Grab ground water samples will be collected from within 2-inch diameter hollow-stem rods equipped <br /> with a five-foot, extendable 0.01-inch slotted PVC screen. Grab ground water samples will be <br /> collected in selected intervals of saturated porous and permeable material. The screen will be <br /> exposed at the selected depths and a stainless steel bailer will be used to retrieve the water samples. <br /> Ground water samples for appropriate EPA analyses will be collected into 40-m1 volatile organic <br /> analysis (VOA) vials. <br /> Advanced CeoEnviroamental,Inc. <br />