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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-2 <br />(Page 1 of 1) <br />Boring Dia. : 8" <br />Tot. Depth :25 <br />Casing Depth : 25' <br />Date : 5/16/06 <br />Casing Dia. : 2" <br />Screen Interval : 20-25' <br />4cological <br />Tedutia <br />Iftc. <br />Drilling Method : DP/HSA <br />Driller : RSI <br />Logged By : Eric Price <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 />Depth <br />in <br />Feet Sample <br />Time DESCRIPTION <br />o <br />I <br />ci.. <br />cl <br />0 <br />(i) <br />(-) up <br />D <br />OVM <br />(PPrn) <br />Well: OW-2 <br />Elev.: <br />/— Cover <br />0 <br />Gravel - Road base material . . \ / • FL <br />I I <br />5 - <br />SILT - Light Olive Brown, hard well compacted, no odor <br />/.1... <br />• ......: <br />.- " <br />. • <br />-:• . . . <br />- • . . . <br />.•.-. <br />, .... . . <br />... . ,.. <br />:1 <br />- • .. <br />.• <br />. .., <br />• . . <br />... ' „... <br />' <br />SM <br />- <br />' <br />• <br />• <br />• <br />. <br />• <br />- . <br />• . <br />' . <br />' <br />• <br />CLAYEY SILTY SAND - Light Olive Brown, v. fine grain <br />sand w/ subangular coarse grain sand (<5%), no odor <br />. <br />SC <br />• • <br />_ <br />10- <br />_ <br />SILTY SAND - Dark Olive Brown, v. fine grain sands, no <br />odor, dry <br />-.•,.-. _ •I <br />-.•: -1: <br />.-. • . <br />. <br />:• SM <br />-. , <br />1-. <br />. <br />. <br />. <br />. <br />. ' <br />. ' <br />• <br />. <br />• <br />-0W-2d12 1120 <br />SILTY CLAY - Olive, oxidized, low plasticity, strong odor, <br />moist \ / <br />MH ' <br />•• <br />- <br />- <br />15 - <br />-0W-2d16 1125 <br />SANDY SILT - Brown, v. fine to fine grain sands (<25%), <br />no notable odor, wet <br />DIPE,ETBE. MTBE, TAME ND<5 ug/kg <br />TBA ND<50 ug/kg <br />TPH-G ND<1 mg/kg, Benzene ND<5 ug/kg <br />Toulene ND<5 ug/kg, Ethylbenzene ND<5 ug/kg <br />Xylenes ND<10 ug/kg <br />ML <br />18.5 <br />2.4 <br />. . <br />• <br />• <br />. <br />. <br />• • <br />• <br />_ <br />_ <br />SANDY SILT - Brown, v. fine to fine grain sands (<50%), <br />no notable odor, wet ML <br />I I - <br />20 <br />_ <br />_ <br />_ <br />2. <br />?T• <br />.? <br />D 25 <br />-0W-2d20 <br />-0W-2d24 <br />1130 <br />1140 <br />SILTY SAND - Brown, poorly sorted, v. fine to medium <br />grain sands (75%), fines (25%), no odor <br />TPH-G ND<1 mg/kg <br />Benzene ND<5 ug/kg <br />Toluene ND<5 ug/kg <br />Ethylbenzene ND<5 ug/kg <br />Xylenes ND<10 ug/kg <br />DIPE,ETBE, MTBE, TAME (ND<5 ug/kg) <br />TBA ND<50 ug/kg <br />.. <br />-- • <br />. <br />• . <br />.. <br />. <br />.* <br />. - <br />, .•.• <br />- .•.•. . - . . . . . . .. .. <br />. . . . <br />- ' • • • • <br />' . • . <br />' : 1 <br />... . <br />. . <br />': ••• <br />„ . - - - .• <br />- • .-. . . - • . . . . . . . <br />. <br />: <br />. <br />SM <br />• <br />• <br />. . <br />N <br />E <br />M <br />Mi • <br />• <br />• <br />i <br />D , <br />Y