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1 <br /> Since the vertical extent of impacted soil had previously been defined in the vicinity of the former <br /> USTs, soil samples were not collected from the soil boring next to the former USTs (G-6) From <br /> each of the six peripheral soil borings, undisturbed soil samples were collected at five-foot intervals <br /> into acetate liners using the Geoprobe sampler In the field, a Ramage Environmental geologist <br /> tlogged all of the soil samples for hydrogeologic and lithologic characteristics according to the <br /> Unified Soil Classification System and screened each sample for any organic vapors using a <br /> ' photoionization detector (PID) <br /> At G-6, the groundwater sample from the 44-foot depth was collected using a HydropunchT", driven <br /> into the groundwater-bearing soil At the 44-foot depth, the sampler was pulled up approximately <br /> four feet to expose the open borehole to an inner core well screen The groundwater-grab sample <br /> ' was collected by hand, using polyethylene tubing and a check valve <br /> At each of the other six soil borings, groundwater-grab samples were collected using temporary <br /> ' wells The temporary wells consisted of five feet of one-inch diameter, Schedule 40, flush-threaded <br /> and machine-slotted (0 010-inch) polyvinyl chloride (PVC) wells screens, installed to the total <br /> ' depths of the soil borings Blank PVC casings threaded into the tops of the temporary wells and <br /> extended to the surface Filter packs were not installed in the temporary wells Groundwater-grab <br /> samples were collected from the temporary wells by hand, using polyethylene tubing and check <br /> valves <br /> ' Following sampling, the soil borings were sealed and abandoned using neat cement grout The <br /> boreholes were filled with grout from the bottom using a tremae pipe Following borehole <br /> abandonment, the surface pavement was restored <br /> Based on field observations and in consultation with the EHD inspector, a total of 12 soil samples <br /> ' and all seven of the groundwater-grab samples were submitted for laboratory analysis The soil <br /> and groundwater-grab samples were properly contained, and transported with chain-of-custody <br /> documentation to Excelchem Environmental Labs (Excelchem), a state of California certified <br /> hazardous waste testing laboratory (Certification #2119) Excelchem analyzed each soil and <br /> groundwater-grab sample for TPH-as-diesel, TPH-as-gasoline, and BTEX by EPA Method <br /> 802018015M, and for MTBE, DIPE, ETBE, TAME, TBA and 1,2-DCA by EPA Method 8260B <br /> 1 <br /> ' 10 <br /> i <br /> 1 <br /> 1 <br />