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HYDROGEOLOGIC LOG FOR PKL-5 <br />BISHOP'S GATE SUBDIVISION <br />LOUDOUN COUNTY, VIRGINIA <br />Project: Bishop's Gate Subdivision Casing Depth: 70' Casing Stickup: 2' Casing Thickness:. /88" <br />Driller: Singhas and Michael Copp. Depth Drilled: 260' <br />Date Drilled: /1/12/04 Depth to bedrock: 20' <br />Drill Rig Type: Schramm Air Rota~S~ Static Water Level: 6 <br />42' <br />. <br />Well Diameter: 6" Airlift Yield: /5 gprn <br />° <br />' <br />Latitude: 39 <br />9 <br />47" Longitude: 77°42'35" Grout Type (Depth): Bensea! (66) <br />Loudoun County Permit #: 740148580001 <br />Depth Air-Lift Graphic <br />(feet) Yield* Log Descriptive Log <br /> ( m) <br />0 Casing 0' - 20': Saprolite. <br />10 <br />20 ~ 20' - 200': Dark gray, medium- to coarse-grained, moderately foliated biotite granite gneiss. <br />30 <br />40 <br />50 <br />60 <br />70 <br />80 <br />90 <br />100 <br />110 <br />120 <br />130 <br />140 <br />150 <br />160 <br />170 <br />180 15 180': l'Vater-bearing zone: 1 ~ gpm. <br />190 <br />200 ' <br />' <br /> 200 <br />- 35~ <br />: Dark greenish-gray, fine-grained, moderately foliated greenstone. <br />210 <br />220 <br />230 '.~:~~~~''` <br />. ~, .- <br />240 ~' <br />250 <br />260 3~5' - 360': Qio[i[e granite gniess <br /> . <br />270 <br />Cuttings of bedrock collected at 10-foot intervals and at changes in lithology. * Yield determined during drilling of 6" test well. <br />PKL Bedrock well Iogs.xls;PKL-5 Page 1 Emery & Garrett Groundwater, I/1C. <br />