Laserfiche WebLink
12 September 1997 <br /> AGE-NC Project No. 97-0324 <br /> Page 3 of 6 <br /> Probe borings were sampled at five foot intervals beginning at twenty feet bsg, using a Geoprobe <br /> soil sampling device loaded with four six-inch by 1.125 inch brass sleeves. The second sleeve, <br /> collected was covered with Teflon sheets, capped and sealed with tape. All samples were labeled. <br /> Collected samples preserved for laboratory analysis were placed in a chilled container, under ice, <br /> and transported to McCampbell Analytical, Inc., (MAI) under chain-of-custody. The sampling <br /> equipment was washed in an Alconox solution and rinsed with water prior to each sampling run to <br /> avoid cross-contamination. <br /> 32. SOIL LOGGING <br /> After sample preservation soil was extruded from the remaining portions of the sleeve and screened <br /> utilizing an organic vapor meter equipped with a photo-ionization detector (PID: Thermo <br /> Environmental 580A, 10.0 eV, calibrated to isobutylene), and the readings were recorded on the <br /> Boring Logs. <br /> 3.3. GRAB GROUND WATER SAMPLE COLLECTION <br /> Grab ground water samples were collected from all probe borings using a temporary PVC screen. <br /> The probe rods were advanced to a depth of twenty five feet pulled out and a screened casing was <br /> inserted into the saturated zone. Ground water was allowed to enter the casing, and samples were <br /> retrieved using a modified PVC tubing bailer. <br /> After sample retrieval,the water sampler was disassembled and cleaned. New PVC tubing was used <br /> to collect each sample. Water samples were collected into 40-m1 EPA-approved VOA vials <br /> containing 0.5 ml 18% hydrochloric acid for sample preservation. The samples were placed in a <br /> chilled container under ice and transported under cliain-of-custody to MAI for analysis. <br /> 3.4. LABORATORY ANALYSIS OF SOIL AND GROUND WATER SAMPLES <br /> Selected soil and ground water samples were analyzed in accordance with EPA Method 5030/8015- <br /> M for total petroleum hydrocarbons quantified as gasoline(TPH-g),in accordance with EPA Method <br /> 8020 for volatile aromatics (benzene, toluene, ethyl benzene and xylenes: BTE&X) and for methyl <br /> tertiary butyl ether (MTBE). <br /> Advanced GeoEnviron mental Inc. <br />