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111 <br /> 11 April 2003 <br /> AGE-NC Project No 01-0865 <br /> Page 2of9 <br /> The samples were logged on a chain-of-custody form,placed in a chilled container and subsequently <br /> transported to Cal Tech Environmental Laboratories (CTEL), a State of California Department of <br /> Health Services (DHS)-certified laboratory <br /> 23 SOIL ANALYSES <br /> Selected samples were analyzed for the following <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) and diesel (TPH-d), in <br /> accordance with EPA Method 8015 Modified, <br /> • Benzene, toluene, cthylbenzene and total xylenes (BTEX) and the fuel additives including <br /> methyl tert-butyl ether (MTBE), tertiary-butyl alcohol (TBA), di-isopropyl ether (DIPE), <br /> ethyl tertiary-butyl ether (ETBE), tertiary-amyl methyl ether (TAME), 1,2-dibromoethane <br /> (EDB) and 1,2-dichloroethane (1,2-DCA) by EPA Method 8260B, and <br /> • MTBE by EPA Method 1311 (TCLP) <br /> • In addition, selected soil samples were analyzed for specific gravity (including soil moisture), <br /> porosity/permeability and total organic carbon (TOC), in accordance with ASTM Methods D854, <br /> D5084 and D2974, respectively, and microbial and physicochemical properties <br /> 2 4 SOIL LOGGING <br /> During drilling, soil sample duplicates were monitored for the presence of organic vapor using an <br /> organic vapor meter equipped with a photo-ionization detector(PID Thermo Environmental 5 80A, <br /> 10 0 eV, calibrated to isobutylene) and were visually described on boring logs in accordance with <br /> the Unified Soil Classification System (USCS) Boring logs are included as Appendix B <br /> 2 5 GROUND WATER SAMPLING <br /> A grab ground water sample was collected from each probe boring location using a Geoprobe <br /> hydropunch sampling assembly The probe rods were advanced to the desired depth in the zone of <br /> saturation,then the hollow steel rods were pulled up four feet,exposing aPVC screen Groundwater <br /> was allowed to enter the screen, and samples were retrieved using a modified PVC tubing bailer <br /> Sufficient sample was collected from the borings to fill three 40-m1 EPA-approved volatile organic <br /> analysis(VOA)vials containing 0 5 ml 18%hydrochloric acid as a sample preservative The ground <br /> water sample containers were labeled with probe boring designation,depth,date,time,and sampler's <br /> Advanced GeoEnvtronmental,Inc <br />