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•29 March 2002 <br /> AGE'-NC Project No. 99-0637 <br /> Page 2.of 6- <br /> r -2:2. LOGGING <br /> Soil was extruded from a second-brass-sleeve and was screened for the presence of organic vapor <br /> using an organic vapor meter.(OVM).equipped with a photo-ionization detector (PID: Thermo <br /> Environlinental.580A, 10.0 eV calibrated to isobutylene),and the-OVM readings were recorded on <br /> the .boring log. The soil was then visually described in accordance with_ the Unified Soil <br /> r Classification System (see Appendi(A). <br /> -2.3.. WELL COMPLETIONS <br /> -Pilot borings MW5, MW6 and MW7'were'completed as ground water monitoring wells using <br /> two-inch diameter PVC casing with 0.020-inch-slotted screen installed from approximately-10 feet <br /> to 30 feet bsg and with blank casing extended to the surface.. The filter pack(No. 3 Lonestar sand). <br /> r- <br /> was installed from approximately 8 feet to 30. feet bsg. A.-nominal 2-foot bentonite,chip plug was <br /> then installed-above the filter pack and hydrated. The wells were then grouted to near the surface- <br />- grade with portland cement.Water-tight,traffic-rated well boxes were then installed over the wells.. <br /> --� As-built-well diagrams are:depicted on the boring logs in Appendix A. <br /> 2.4. 'LABORATORY ANALYSES OF SOIL SAMPLES <br /> Selected soil samples were analyzed for: <br /> • Total petroleum hydrocarbons-quantified as gasoline and diesel (TPH-g and TPH-d) in <br /> accordance with EPA Method 5030/8015 Modified and.3550/8015 Modified; <br /> •. <br /> 'Benzene,toluene, ethylbenzene and total xylenes(BTEX) in accordance with EPA Method <br /> -8020; and <br /> • Fuel additives --di-isopropyl ether (DIPE),: ethyl fertiary-butyl ether (ETBE), methyl <br /> . tertiary-but 1,ether (MTBE), tetiar -am 1 methyl ether (TAME), tertiary butanol .(TBA , <br /> 1,2-dichloroethane (1,2-DCA) and ethylene dibromide (EDB) in accordance with EPA <br /> Method 8260 Modified. <br /> - 2.5. MONITORING WELL DEVELOPMENT <br /> �. On 29 January 2002; monitoring wells MW5,MW6 and MW7 were developed utilizing a stainless <br /> _! •` steel hand bailer and a two-stage submersible pump.Ground water was purged from each monitoring <br /> well until ground water was visually sediment free;approximately 15 gallons of water were removed <br />- Advanced.GeoEnvironmental,-Inc: <br />