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r <br /> Project Bridgestone/Firestone Stockton Log of Boring MW-2 <br /> r Project Location 400 North EI Dorado Street <br /> Project Number 11STO Sheet 1 of 2 <br /> r D D�t,L 1!2412000 By 9 A.Drummond Byecked J Gwinn <br /> Drilling Hollow-Stem Auger Drill r 8-inch-013 continuous flight auger Total Depth <br /> Method 36 0 feet <br /> Meg SizelType g g of Borehole <br /> Drill Rig CME 75 Drilling Spectrum Exploration Surface 13 feet MSL(est) <br /> r Type Contractor Elevation <br /> Groundwater 25 feet bgs during drilling, Sampling Modified Califomia split spoon driven Top of Casing Not surveyed <br /> Level and Date 19 4 feet BTOC after 24 hrs Method with 1404b hammer 130-inch drop Elevation <br /> Diameter of Diameter of Type of Screen <br /> Hole(orches) 8 Well(inches) 2 Well Casing 2-inch�lia Schedule 40 PVC Perforation 0 010-inch slot <br /> rSand Pack RMC 2112 Lonestar filter sand of of Seal(s)Depth and Hydrated bentonite chips 9-12 feet,bentonite grout 1-9 feet <br /> Comments Elevation is approximated from USGS topo map Rain during drilling precluded PID monitoring <br /> SAMPLES u; <br /> P p W C $O <br /> �� $ MATERIAL DESCRIPTION a a o a REMARKS <br /> r a> a> Qi a� o - goo -0 Y a c o <br /> w E o C m o�g <br /> � z m C7 ova =a ma oN <br /> 0 ° Concrete 5 inches thick <br /> Moist dark brown,SILTY,CLAYEY SAND(SC-SM),fine-to Hand auger to 5 ft <br />' coarse-grained trace gravel no staining,no odor <br /> 10 <br /> — — — _— —— Start drilling with <br /> 5 22 Very stiff,slightly moist,yellowish red,SILTY CLAY(CL) hollow-stem auger <br /> no staining no odor at 0830 <br /> MW-2-5 0835 <br /> lie 5 <br /> 10 24 <br /> MW-2-10 0850 <br /> r 0 <br /> Becomes stiff with very fine-grained sand <br /> MW-2-15 0900 <br /> S Stiff slightly moist yellowish red,SANDY SILT(ML)with <br /> clay no staining,no odor <br /> 20 16 <br /> tMW-2-20 0910 <br /> -------------------------- <br /> Fq -10 Medium dense moist,yellowish red poorly graded SAND <br /> with silt(SP-SM) fine-to medium-grained,no staining <br /> no odor <br /> 0 25 21 ` Becomes wet <br /> y <br /> MW-2-25 0920 <br /> LL <br /> m <br /> -15 Very stiff moist yellowish red SILT(ML)with sand and clay <br /> no staining,no odor <br />' 0 25 <br /> 0 30 <br /> 0 <br /> a <br /> a <br /> R 11 N ORION ENVIRONMENTAL INC <br />