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GEOPROBE SAMPLE COLLECTION AND DESCRIPTION LOG i SITE Agricultural Commissioner's Office BORING ID S13-2 392 South Moffat Blvd Manteca, California Drilling Date August 19, 1999 1 SAMPLE FID ' SAMPLE SAMPLE DEPTH SAMPLE READING ID TIME (Feet) TYPE ANALYSES (ppm) USCS SOIL DESCRIPTION ' SB-2-5 730 5 SOIL NA 3 SP SAND Poorly-graded fine sand, light brown,dry, no odor SB2-10 740 10 SOIL NA 3 SW SAND Well-graded fine-coarse sand, ' golden brown, dry, no odor TPHD, SILT Some clay, gray-brown, moist,no S82-15 750 15 SOIL TPHG/BTEX 3 ML odor 5 OXYS TPHD, CLAYEY SILT Some fine sand,gray, SB2-20 800 20 SOIL TPHG/BTEX 300 ML wet, strong petroleum odor 5 OXYS TPHD, SB2-25 820 25 SOIL TPHG/BTEX 50 ML SILT Gray, moist,slight petroleum odor 5 OXYS TPHD, S82-30 835 30 SOIL TPHG/BTEX 6 ML SILT Gray,wet, slight petroleum odor 5 OXYS S132-35 900 35 SOIL NA 3 SP SAND Poorly-graded fine-medium sand, light brown,wet, no odor TPHD, S132-43 950 43 SOIL TPHG/BTEX 1 SP SAND Poorly-graded medium-coarse 5 OXYS sand, light gray,wet, no odor ' Static groundwater at 18 7 feet GROUND TPHD' Collected groundwater-grab sample SB2-GW 1015 187 WATER TPHG/BTEX - - (strong petroleum odor) Terminated sod ' 5 OXYS boring at 43 feet Sealed borehole with neat cement, b1 tremae NOTES FID= Flame Ionization Detector Geologist Joseph Ramage R G #5856 ppm=parts per million Ramage Environmental USCS=Unified Sod Classification System Sample depths are in feet below ground surface Rig Geoprobe 540_0 Direct Push Dnller David Fisch (C-57#683865) TPHD=Total Petroleum Hydrocarbons-as-Diesel Fisch Environmental ' TPHG =Total Petroleum Hydrocarbons-as-Gasoline BTEX= Benzene,Toluene, Ethylbenzene,Xylenes 5 OXYs=Five Oxygenates(MTBE, ETBE, DIPS,TAME,TBA) NA= Not Submitted for Analysis 1