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_ r <br />' 20 March 2002 <br /> AGE-NC Projcct No 01-0877 <br />' Page 4 of 7 <br />' Volatile organic compounds and fuel additives including benzene, toluene, ethylbenzene, <br /> total xylenes,methyl-tertiary butyl ether(MTBE),tertiary-butyl alcohol(TBA),di-isopropyl <br /> ether(DIPE),ethyl tertiary-butyl ether(ETBE),tertiary-amyl methyl ether(TAME),ethylene <br />' dibromide (EDB) and 1,2-dichloroethane (1,2-DCA)by EPA Method 8260B <br />' 34 SOIL LOGGING <br /> During drilling,sample duplicates were monitored for the presence of organic vapor using an organic <br /> vapor meter equipped with a photo-ionization detector(PID Thermo Environmental 580A, 10 0 eV, <br /> calibrated to isobutylene)and were visually described on boring logs in accordance with the Unified <br /> ISoil Classification System (USCS) Boring logs are included as Appendix A <br /> 35 GROUND WATER SAMPLING <br /> Grab ground water samples were collected from each probe boring using a temporary PVC screen <br /> The probe rods were advanced to approximately 38 to 40 feet bsg The hollow steel rods were then <br /> pulled out, and a screened casing was inserted into the saturated zone Ground water was allowed <br /> to enter the casing, and samples were retrieved using a modified PVC tubing bailer Sufficient <br /> sample was collected from each boring to fill three 40-m1 EPA-approved volatile organic analysis <br /> (VOA)vials containing 0 5 ml 18%hydrochloric acid as a sample preservative and two 1-liter amber <br /> bottles without the sample preservative Ground water sample containers were labeled with probe <br /> I boring designation, date, time,and sampler's initials The preserved sample was logged on a chain- <br /> of-custody form, placed in a,chilled container and transported to CTEL for analysis <br /> 3 6 GRAB GROUND WATER ANALYSES <br /> Each grab ground water sample was analyzed for <br /> • TPH-g, TPH-d and TPH-mo in accordance with EPA Method 8015 Modified, <br /> • Oil and Grease in accordance with EPA Method 418 1, <br /> • Volatile organic compounds and fuel additives including benzene, toluene, ethylbenzene, <br /> total xylenes, MTBE, TBA, DIPE, ETBE, TAME, EDB and 1,2-DCA by EPA Method <br /> 8260B <br /> IAdvanced GeoEnvironmental,Inc <br />