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,aw, Environmental Risk Servi lorporation <br /> Boring Log: MW-5D,P,SDate: 9/15/U5 Logged by: Tyson Fulmer Well Specifications <br /> Location: Roberts No. 1, Roberts Island, Port of Stockton Elevation (feet msl; d, p, s) <br /> Drilling Co.: Major Drilling GS: 7.78,8.03,8.05 TOC:10.56,10.84,10.41 <br /> Driller: Frank Bartolovich Depth to water:D: 16.32'P: 17.52';S: 18.63' <br /> Drilling Method: 8"hollow stem auger Total Well Depth: D: 17';P:33';S:50' <br /> Grout Materials and Method: Bentonite and Tremie grouted bentonite neat cement slurry D: Lat.: 37.967981 Long.:-121.375768 <br /> Well Sand Type: 2/12 Monterrey sand P: Lat.: 37.967965 Long.: -121.375804 <br /> Completion: Finished 3'above grade in stainless monument S: Lat: 37.967953 Long.:-121.337583 <br /> Groundwater Sampling Method: No samples Screen Interval:D:12-17'; P:27-33';S:45-50' <br /> Soil Sampling Method: 2'split spoon (P= push) PVC: SCH 40, 2"D, 0.010"slot size <br /> a� z Cc <br /> t m > m t rn Well Well Well <br /> �.��. n o m0 <br /> D <br /> 10a om 7 MW-5D MW-5P MVV-5S <br /> Detail Detail <br /> Material Description <br /> Remarks <br /> Light brown fine grained sand, loose(10 YR 5/6) <br /> 1 <br /> 2- <br /> 3— <br /> SP 3SP <br /> 4- <br /> 5- <br /> 6- <br /> 7- <br /> 8— <br /> 567 8 Olive brown (7.5 YR 4/3)fine grained silty sand <br /> 9- <br /> 10- <br /> 2 10 2 <br /> 11 2 SM Very dark gray(2.5 Y 4/4)medium grained sand <br /> 12 3 <br /> 3 <br /> 13- <br /> 14— <br /> 3 14 .25 Very dark gray(5 Y 3/1)fine grained silty sand <br /> .25 <br /> 15— <br /> .25 <br /> .25 Very dark gray(5 Y 3/1)silty sand, moist to wet <br /> 16- <br /> .5 <br /> 17 .5 Gray high plasticity silty clay mixed with peat, damp <br /> P <br /> 18 P CL Dark gray silty clay soft, gets harder at 18', moist <br /> 1 <br /> 19 2 Grayish brown, medium grained sand, moist <br /> Gray medium grained sand, moist <br /> 20— <br /> P <br /> P SP '.... <br /> 21 P <br /> 22 P <br /> Interlayered peat and high plasticity clay,clay dominates <br /> 23 24-25', moist <br /> 24 P PT/ <br /> P CL <br /> 25— <br /> P <br /> 26 P - <br /> - Dark brown peat , moist, moist to wet, squeezed to get <br /> 27 water <br /> 28- <br /> 29- <br /> 30 <br /> 8 29 30 <br />