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R p LOG OF BORING MW-4 <br /> Environmental (Page 2of2) <br /> Humbrook Holdings LLC Date Started/Completed 10!7/2013 Drill Rig :CME-75 <br /> 3138 East Main Street Hole Diameter :8.25-in. Logged By :M.Barrington,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:2170789.4/6347071.1 <br /> MW-7,MW-8,and Borings RDM-1 and CPT-1 1 Drilling Company/Driller.All Well Abandonment/J.Ceja Casing Elev. :28.58 <br /> Sample Interval Sampler Type <br /> Lab Sample SS Split Spoon <br /> Q Int.Sampled ST Shelby Tube 2 <br /> ti U Lost PS Piston Sampler ? Well:MW-4 <br /> C Surf. = AL Clear Acetate a 0 <br /> s Elev. N a a <br /> O 28.82 C DESCRIPTIONa � Lab No. to <br /> . 35 7 SILTY CLAY:50%clay,50%Silt; 0 MW-4-35.5' D(6" WELL CONSTRUCTION <br /> brown(7.5YT/5/4);low plasticity, Date Compl. :10-7-13 <br /> hard,moist Hole Diameter :6.25 in. <br /> Drill.Method :HSA <br /> CL <br /> WELL CASING: <br /> Material :Sch.40 PVC <br /> Diameter :2-in. <br /> . 40 _ _ — _ — _ _ — 0 MW-4-40.5' 0(6" Joints :flush-thread <br /> -12 SILT:70%Silt,20%Clay, 10%fine 41 WELL SCREEN: <br /> grained sand;dark brown Material :Sch.40 PVC <br /> n. <br /> (7.5YR/3/4); nonplastic, hard,moist Diameter :flus <br /> Joints :flush-thread <br /> ML 43 Slot Spacing :0.010-in. <br /> SAND PACK :No.2/12 Sand <br /> • 45 — — — — MW-4-45.5' 0(5" 45 TRANSITION :Bentonite chips <br /> -17 SILTY SAND:60%fine grained 0 <br /> sand,40%silt; pale brown,moist ANULAR SEAL:Neat Cement <br /> SILT:70%silty,25%clay,5%fine SURFACE :8-in.dia. <br /> grained sand; reddish brown COMPLETION :steel well box <br /> (5YR/4/4);nonplastic, hard,moist <br /> Notes: <br /> 50 yellowish red(5YR/4/6), moist to 18 <br /> • -22 wet 0 MW-4-50.5' 25 San Joaquin Co EHD Permit <br /> 32 #68151 <br /> first groundwater encountered at Depth to GW 49.00 ft.btc on <br /> approximately 52.5 feel below 10/16/13 <br /> ground surface <br /> * 55 ML saturated 0 11 <br /> -27 MW-4-55.5' 19 <br /> 25 <br /> 60 contains thinly interbedded silty nm <br /> 32 sand from 60 to 65 feet(ML/SM) 0 MW-4-60.5' nm <br /> nm <br /> 17 <br /> 0 22 <br /> 65 35 165 <br /> • -37 <br /> • 70 <br />