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1 <br /> Project; Bridgestone/Firestone Stockton Log of Boring MWA <br />' Protect Location 400 North EI Dorado Street <br /> Protect Number, 11STO Sheet 1 oft <br />' Da]lead 1n4n000 B°gged A Drummond Chocked J Gwmn <br /> Dulled <br /> Melth� Hollow-Stem Auger Drill Bit 8-inch-OD continuous flight auger Total Depth 36 5 feet <br /> SizelType of Borehole <br /> Dill Rig CME 75 Drilling Spectrum Exploration Surface 13 fest MSL est <br /> Type Contractor P� p Elevation ( ) <br /> Groundwater 25 feet bgs during drilling, Sampling Modified California split spoon driven Top of Casing Not surveyed <br /> Level and Date 19 85 feet BTOC after 24 hrs Method with 1404b hammer 130-inch drop Elevation <br /> Diameter of Diameter of Type ofScreen <br /> Hole(inches) 8 Well(inches) 2 well Casing 2-inch-dla Schedule 40 PVC Perforation 0 010-inch slot <br /> Sand Pack RMC 2112 Lonestar filter sand Type and Depth Hydrated bentonite pellets 9-12 feet,bentonite grout 1-9 feet <br /> of Seal(s) <br /> Comments Elevation is approximated from USGS topo map Rain during drilling precluded PID monitoring <br />' SAMPLES y <br /> $ d <br /> w Q MATERIAL DESCRIPTION 5 E m E � E L REMARKS <br /> 1 <br /> w� ow � ° �0a 4) c� <br /> Z m C.9 2d doR ON <br /> g e 4 Concrete 5 Inches thick Hand auger to 5 ft <br />' Moist dark brown,SILTY CLAYEY SAND(SC-SM) fine-to <br /> coarse-grained,trace gravel no staining,no odor <br /> 10 <br />' <br /> 5 4 — --- -- -- -- Start drilling with <br /> Soft moist,yellowish red SILTY CLAY(CL)with very hollow-stem auger <br /> fine-grained sand no staining,no odor at 1245 <br /> MW-1-5 1250 <br /> 10 4 Increase m sand <br /> MW 1305 <br />' D <br />' 15 <br /> MW-1-15 27 Becomes verystiff <br /> 1315 <br />' $ Medium dense,moist yellowish red SILTY SAND(SM) fine- <br /> to medium-grained no staining,slight hydrocarbon odor <br /> 20 26 <br />' MW-1-20 1320 <br /> $ -10 <br />' a <br /> 25-121 i—Becomes wet no odor <br /> MW-1-25 1330 <br /> LL <br /> m <br /> 103: -15 Medium dense moist yellowish red CLAYEY SAND(SC) <br /> z1 no staining no odor <br /> I g 17 ONE'<, <br /> 0 30 <br /> S <br /> CRI 'INORION ENVIRONMENTAL INC <br />