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Environmental Risk Serv' Corporation <br /> Boring Log:MW-6D Date: 9/15/05 Logged by: Tyson Fulmer Well Specifications <br /> Location: Roberts No. 1, Roberts Island, Port of Stockton Elevation(feet msl) <br /> Drilling Co.: Major Drilling GS: 2.50 TOC: 1.99 <br /> Driller: Frank Bartolovich Depth to Water(feet msl) <br /> Drilling Method: 8" hollow stem auger Static: 8.59 <br /> Grout Materials and Method: Bentonite and Tremie grouted bentonite neat cement slurry Total Well Depth: 10' <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' <br /> Soil Sampling Method: 2'split spoon (P= push) Screen Slot Size: 0.010" <br /> N � <br /> C <br /> t d co <br /> > Well <br /> w >Ca m o m (n T� Detail <br /> o x m D 0 Material Description MW-6D Remarks <br /> 1 Yellowish brown (10 YR 5/6), fine grained sand, dry to <br /> damp <br /> 2— <br /> S P SP <br /> 3- <br /> 4— 4 <br /> 5 3 <br /> 2 OH ; Blackish brown dry fat clay with clay <br /> 77 <br /> 6 1 <br /> 2 CL ! High plasticity dark grayish brown (7.5 Y 3/2)clay <br /> 7 3 <br /> Medium grained sand, no cohesiveness, pyrite, dark <br /> 8 <br /> IS i. yellowish brown (10 YR 4/4) <br /> 9 <br /> Olive (5 Y 4/4), coarse grained sand, loose Sand heaved 6" into hole <br /> 10 1 <br /> 11 <br /> 1 SP <br /> 4 <br /> 12 7 <br /> Total depth <br /> 13 <br /> 14 <br /> 15 <br /> 16 <br /> 17 <br /> 18 <br /> 19 <br /> 20 <br /> 21 <br /> 22 <br /> 23 <br /> 24 <br /> 25 <br /> 26 <br /> 27 <br /> 28 <br /> 29 <br /> 30 <br />