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rAGM, Environmental Risk Servi Corporation <br /> Boring Log: MW-6D,R,S I Date: 12/12/05 Logged by: Tyson Fulmer Well Specifications <br /> Location: Roberts No. 1, Roberts Island, Port of Stockton Elevation (feet msl) MW-6d' <br /> Survey data pendingDrilling Co.: Spectrum Exploration GS:2.50',TOC: 1.99' for <br /> MW-sr,ss <br /> Driller: Sean Riley Depth to Water(feet msl) <br /> Drilling Method: 8" hollow stem auger 6d: 8.69, 6r:9.68,6s: 9.05 <br /> Grout Materials and Method: Bentonite and Tremie grouted bentonite neat cement slurry Total Well Depth: d: 10', r: 25, s: 35' <br /> Well Sand Type: 2/12 Monterrey sand Lat.: 37.976880 1 Long.: -121.385039 <br /> Completion: Finished flush in traffic rated Christy box PVC Diameter: 2"SCH 40' <br /> Groundwater Sampling Method: No samples Screen Interval: 7- 10', 20-25', 30-35' <br /> Soil Sampling Method: 2'split spoon (P= push) Screen Slot Size: 0.010" <br /> N � <br /> Ol <br /> C <br /> t o m n Well Well Well <br /> % ) n U o N m j Detail Detail Detail <br /> o a W- m D 0 Material Description MW-61D MW-6R MW-6S Remarks <br /> Yellowish brown(10 YR 5/6), fine grained sand, dry to <br /> 1 damp <br /> 2 <br /> SP <br /> 3- <br /> 4— 4 <br /> 5 3 <br /> 2 OH ; Blackish brown dry fat clay <br /> 6 1 ; <br /> 7 <br /> 3 CL �/ 7.5 Y 3/2 dark grayish brown, soft clay <br /> 1 Medium grained sand, no cohesiveness, pyrite, dark <br /> 8 SM !, yellowish brown (10 YR 4/4) <br /> 9 <br /> Olive (5 Y 4/4), coarse grained sand, loose <br /> 10 1 Sand Heaves 6" <br /> 11 1 into hole <br /> 4 <br /> 12 7 <br /> 13 <br /> 14Limited sampling <br /> due to heaving <br /> 15 s Grey brown and white coarse grained sand with quartz, sand conditions <br /> 16 <br /> 4 saturated <br /> 9 <br /> 17 SP <br /> 18- <br /> 19- <br /> 20— <br /> Driller <br /> 81920 Driller lifts up on <br /> No sample, see notes center bit 1"-2", bit <br /> 21 does not fall back, <br /> 22 indicates presence <br /> of heaving sands <br /> 23- <br /> 24- <br /> 25- <br /> 4 <br /> 32425 4 <br /> Pull up on center bit <br /> 26 6 j 2 gley 4/1 dark greenish grey stiff silty clay bit falls back to <br /> 27 original depth,wate <br /> rising in hole to 15' <br /> 28 3 bgs, out of heaving <br /> 2 gley 4/1 dark greenish grey, v. fine grained, stiff sands at 25' <br /> 29 4 sandy silt <br /> 30 <br />