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ers Environmental ...6k Services, Corporation 1600 Riviera Avenue, Suite 310 Walnut Creek, CA 94596 925 938.1600 Boring Log: MW-4S/P Page 1 of 1 Date: 2/25/2009 Logged By: Tyson Fulmer Well Specifications Location: Bulk Commodity Terminals, Stockton, CA Elevation GSE: TOC: Depth to Water Initial: ft. Static: 7 ft. Total Well Depth: 25.5 ft. Lat.: Pending Long: Survey PVC Diameter: 2" PVC Screen Interval: MW-4S: 20-25, MW-4P: 7.5-loft Screen Slot Size: 0.010" Client: Port of Stockton Drilling Co.: Precision Drilling Drilling Method: 8" Hollow Stem Auger Driller: Chad Well Sand Filter: 2/12 Monterey Well Seal: Bentonite Grout Materials and Method: Neat cementirremie Completion: Flush mount with box Groundwater Sampling Method: NA Soil Sampling Method: SPT Sampling Depth, bgs (ft) io -a c) I:0 1 Soil Sample Saturated Zone C-) Cl) D Graphic Log u) Material Description Well Diagram MW-4P MW-4S 5— - _ - 10 — - _ _ - _ 20— _ _ _ - 25— _ - _ \ \ kM r a W Silty clay (CL) very dark brown, roots, grass, organics, 30% silt, soft, medium plasticity, damp - V v 1,4 11 \ V ‘041 ,,,d m \ ,><' ..><' \ \‘‹ Hand auger upper 5' \ .,><, .,>< \ ush SPT sampler p switch to Cal-modified sampler to get continuous sample @5' \\ < W \ \ * ML - Sandy silt (ML) dark yellowish brown, 40% sand, poorly sorted, soft, damp, _ decrease in sand content at 5' bgs 20% sand - - _ - 2 k k \\ k\\ \ \ k i \ \, .w... v CL • / Silty clay (CL) black, medium plasticity, 20% silt, soft, organic content increases - with depth from 7-10' bgs, wet - Organic rich peat layer 8.5-9' - High plasticity reddish grey clay at 10.5', trace organics _ _ < \ ii \ '>< 1 •• — ... —... :7.7-:• :• — " — ..• —••• -- .. _.. . —. .--•••• ...—., .:,—.:• ' — < \ \ I :• - ••• ••• 15—kw -5 2 kk ML t Sandy silt (ML) dark reddish brown, 30% sand, soft _ - 2 2 4 3 5 2 ‘ \ ' k\ &Ns, V\ 7 .\\ \ SIV1'; :. '...*,:•:. ••• • • •• • • • • . :. .• . • •••:"..L. ..•.y.: . . . .• . . ... • . .• ..... Silty sand (SM) dark greenish gray, 20% silt, grain size increases with depth, very *:- fine-grained to medium-grained - .• ._ _ . - :.: Poorly sorted at 20' bgs - _ .•.- _ .. .- _ ... . - .• • • ‘Li_ Clay silty (CL) Dark greenish grey, 20% silt, medium stiff Total Depth: 25.5 ft.