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r , <br /> f , <br /> 30 May 2004 ; <br /> AGE-NC Project No 02-0962 <br /> Page 6 of 10 _ <br /> 4.0 FIELD PROCEDURES <br /> t " <br /> All field procedures will be overseen by an AGE representative under the supervision of a California <br /> Registered Geologist Procedures for"soil 'and ground water sampling, well installation, well <br /> , <br /> development, are described below <br /> 41 CPT SOIL BORINGS <br /> The CPT soil boring will be advanced to a depth of 100 feet bsg utilizing a 25-ton truck-mounted <br /> CPT drill ng equipped with a hydraulic ram and 2-inch diameter hollow-stem rods to advance soil <br /> borings The initial soil boring at each location will be a cone penetrometer, advanced to the desired <br /> depth Soil parameters such as cone bearing, sleeve friction, friction ratio and pore water pressure <br /> will be measured as the cone penetrometer is advanced Rinseate generated as part of the drilling <br /> activities will be containerized in properly labeled DOT-approved 5 5-gallon drums and stored on-site <br /> in an area Iacking public access Disposal alternatives will be evaluated at a later date based on <br /> laboratory results of rinseate samples <br /> f <br /> . Additional soil borings will be located no more than three feet from the first CPT boring for soil and <br /> ground water sample collection Based on CPT findings, discrete soil samples will be collected at <br /> various depths between 30 and 100 feet bsg based on significant lithologic variation Soil samples <br /> will be collected utilizing a 2-inch diameter piston soil sampling assembly loaded with pre-cleaned <br /> brass sleeves Upon soil sample retrieval,a brass sleeve will be removed from the sampler The ends <br /> i <br /> of the brass sleeve will be immediately covered with Teflon or aluminum sheets, sealed with plastic <br /> end caps, secured with tape and immediately placed in a chilled-container for transportation to a <br /> DHS-certified laboratory Each sample sleeve will be labeled with the location,boring designation, <br /> depth, time,'date and sampler's initials <br /> Soil sample duplicates will be monitored for the presence of organic vapor using a photo-ionization , <br /> detector (PID -Thermo Environmental 580B, 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 /> T Soil Classification System (USCS) and the descriptions will be recorded on the boring logs <br /> Grab groundwater samples will be collected from within 2-inch diameter hollow-stem rods equipped <br /> with a four-foot, extendable 0 01-inch slotted PVC screen Grab ground water samples will be <br /> r <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'containmg 0 5 ml ofhydrochlonc�acid as a sample preservative or I liter amber <br /> . bottles without sample preservative <br /> Advanced Geo Environmental,Inc <br />