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• <br /> 1 n LOG OF BORING MW-7 <br /> Environmental (Page 2of2) <br /> Huntbrook Holdings LLC Date Started/Completed 10/8/2013 Drill Rig :CME-75 <br /> 3138 East Main Street Hole Diameter :8.25-in. Logged By :M.Berrington,PG#7124 <br /> Stockton,CA Drilling Method :Hollow stem auger Survey By :Morrow Surveying <br /> Installation of Monitoring Wells MW-4. MW-6, Sampling Method :2.25-in.xl8-in.split spoon Northing/Easting Coord:2170786.8/6346932.5 <br /> MW-7,MW-8,and Borings RDM-1 and CPT-1 Drilling Company/Driller.All Well Abandonment/J.Cela Casing Elev. :27.97 <br /> Sample Interval Sampler Type <br /> _ Lab Sample SS Split Spoon <br /> Q Int.Sampled ST Shelby Tube <br /> ti U Lost PS Piston Sampler <br /> d Well: MW-7 <br /> C Surf. = AL Clear Acetate a m 0 <br /> t.. Elev. U) a a <br /> 0 28.29 o DESCRIPTION a_ J Lab No. m <br /> 35- 18 4 20 WELL CONSTRUCTION <br /> MW-7-36.5' 42 Date Compl. : 10-8-13 <br /> CL Hole Diameter :8.25 in. <br /> Drill.Method :HSA <br /> _ _ _ _ _ _ _ WELLCASING: <br /> SILT: 60%silt,30%clay, 10%fine Material :Sch.40 PVC <br /> n. <br /> grained sand;very dark grayish Diameter :flus <br /> 40 _12 green(5G/3/2);nonplastic, hard, q 2s Joints :Flush-thread <br /> moist MW-7-41.5' 44 41 WELL SCREEN <br /> Material :Sch.40 PVC <br /> Diameter :2-in. <br /> Joints :Flush-thread <br /> 43 Slot Spacing :0.0104n. <br /> ML SAND PACK :No.2/12 Sand <br /> • 45 -17 0 _ 45 TRANSITION :Bentonite chips <br /> 36 <br /> MW-746.5' 48 ANULAR SEAL:Neat Cement <br /> SURFACE :B-in.dia. <br /> COMPLETION :steel well box <br /> SILTY CLAY: 55%clay,45%silt; Notes: <br /> 50---22 dark yellowish brown(10YR/4/6); 3 24 - San Joaquin Co EHD Permit <br /> low to medium plasticity,hard,wet 39 a <br /> MW-7-51.5' 48 #68149 <br /> first groundwater encountered at <br /> approximately 52 feet below ground Depth to GW 48.40 ft.btc on <br /> CL surface tons/13 <br /> S, 55 _27 3 14 <br /> 25 <br /> MW-7-56.5' 40 <br /> SILTY SAND:60%fine grained <br /> sand,40%silt;dark brown <br /> (10YR/3/4);very dense,saturated <br /> • 60 _32 no sample recovery at 60 to 61.5U- 28 <br /> SM feet below ground surface_ _ _ _ _ _ _ _ _ <br /> CLAYEY SILT WITH SAND:60%silt, 65 <br /> • <br /> 65— -37 25%clay, 15%fine grained sand, <br /> low plasticity, hard,wet <br /> 70 <br />