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George's Service <br />1600 Durham Ferry Road <br />Tracy, CA <br />Project No.: 425.2 <br />LOG OF BORING OW-1 <br />(Page 1 of 1) <br />Boring Dia. : 8" <br />Tot. Depth :25 <br />Casing Depth : 25' <br />Date : 5/17/06 <br />Drilling Method : DP/HSA <br />Driller : RSI <br />Logged By : Eric Price <br />Casing Dia. : 2" <br />Screen Interval : 20-25' <br />Slot Size : 0.020" <br />Filter Pack :19-25' <br />Annular Seal :17-19' <br />Grout : 0.5-17' <br />Water Depth : -17' <br />qeological <br />u Tedtics <br />Mc. <br />Depth <br />in <br />Feet Sample <br />Time DESCRIPTION GRAPHIC ci) <br />Fi) <br />= <br />OVM <br />(uPrn) <br />Well: OW-1 <br />Elev.: <br />0 /— Cover <br />Asphalt street over base material <br />FL <br />I <br />' <br />• <br />1 <br />. . <br />_ <br />5 - <br />10 <br />_ <br />_ <br />15- <br />- <br />_ <br />_ <br />20- <br />_ <br />_ <br />n <br />L - <br />1. F - <br />i <br />25 <br />SILT - Light Olive Brown, hard, no odor <br />ML <br />. <br />. <br />. <br />" <br />• <br />. <br />. ' <br />. <br />• <br />. <br />SILTY SAND - Light Olive Brown, uniform v. fine grain . <br />sand with some silt, slight odor, dry . <br />. <br />: <br />• - • <br />. ' <br />. . <br />. • <br />. ; <br />• - • <br />. <br />' . <br />1 SM <br />• • • <br />• <br />• <br />. <br />" <br />.. <br />. <br />• <br />• <br />• . <br />. <br />OW -1d12 <br />SILTY SAND - Olive Grey, v.fine grain, strong odor, moist <br />TPH-G 130 mg/kg, B 0.3 mg/kg, T 0.3 mg/kg, E 3.2 mg/kg, <br />X 11 mg/kg, MtBE 41 ug/kg <br />., .•.• <br />:• • '•;• <br />. . . . <br />, <br />.• sm <br />. <br />• <br />• <br />• <br />' <br />• • <br />•• <br />0845 SANDY SILT - Dark Olive Grey, v. fine grain sand <br />(<25%), strong odor, product visible in acetate tube, wet ML <br />325 " <br />• <br />• <br />• <br />' <br />' <br />• • <br />SILTY CLAY- Olive Grey, low plasticity, strong odor MH .. <br />OW-1d16 0850 SILTY CLAY- Dark Greyish Brown, low plasticity, <br />moderate odor, product visible in acetate tube <br />MH- <br />• <br />• <br />. <br />i <br />• <br />' <br />' .. <br />I <br />OW -1d20 0855 <br />SAND - Brown, well sorted fine grain sand with little <br />fines, no notable odor SW <br />Benzene 0.006 mg/kg, all other constituents non-detect <br />above reporting limits <br />115 M • MI II • <br />OW-1d24 0900 <br />SANDY SILT - Dark Yellowish Brown, v. fine grain, no <br />notable odor <br />• <br />ML <br />NI M <br />• NI I. <br />• <br />• <br />M <br />i