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QqEEDD <br />LOG OF BORING MW -7 <br />E"vironrrloenta! <br />(Page 1 of 2) <br />Huntbrook Holdings LLC <br />Date Started/Completed 10/8/2013 Drill Rig : CME -75 <br />3138 East Main Street <br />Hole Diameter :8.25 -in. Logged By : M. Berrington, PG #7124 <br />Stockton, CA <br />Drilling Method : Hollow stem auger Survey By Morrow Surveying <br />Sampling Method : 2.25-in.x18-in. split spoon Northing/Easting Coord: 2170786.8/6346932.5 <br />Installation of Monitoring Wells MW -4. MW -6, <br />MW -7, MW -8, and Borings RDM-1 and CPT -1 <br />Drilling Company/Driller: All Well Abandonment/J. Ceia Casing Elev. : 27.97 <br />Sample Interval <br />Sampler Type <br />Lab Sample <br />SS Split Spoon <br />0 Int. Sampled <br />ST Shelby Tube <br />m <br />® Lost <br />PS Piston Sampler <br />Well: <br />MW <br />-7 <br />La) <br />U <br />S <br />Surf. <br />CO <br />= <br />M <br />AL Clear Acetate <br />Q <br />0 <br />Z <br />Elev. <br />0 <br />28.29 <br />? � <br />DESCRIPTION <br />9 <br />Lab No. <br />m <br />cn <br />0--28 <br />28 <br />WELL CONSTRUCTION <br />Concrete - 6" thick <br />CLAY: 65% clay, 30% silt, 5% fine <br />Date Compl. : 10-8-13 <br />grained sand; dark yellowish brown <br />Hole Diameter : 8.25 in. <br />(10YR/4/4), low plasticity, hard, <br />MW -7-2.5' <br />nm <br />Drill. Method : HSA <br />moist <br />WELL CASING: <br />Material : Sch. 40 PVC <br />Diameter :2 -in. <br />5--23 <br />MW -7-5' <br />nm <br />Joints : flush -thread <br />0 <br />WELL SCREEN: <br />Material : Sch. 40 PVC <br />Diameter :2 -in. <br />Joints : flush -thread <br />Slot Spacing : 0.010 -in. <br />SAND PACK : No. 2/12 Sand <br />10 <br />18 <br />CL SILTY CLAY: 50% clay, 45% silt, <br />25 <br />TRANSITION :Bentonite chips <br />5% fine grained sand; yellowish <br />2 <br />MW -7-11' <br />0(5" <br />brown (10YR/5/6), low plasticity, <br />ANULAR SEAL: Neat Cement <br />hard, moist <br />SURFACE :8 -in. dia. <br />COMPLETION : steel well box <br />Notes: <br />15-13 <br />4 <br />MW -7-16' <br />20 <br />0(5" <br />San Joaquin Co EHD Permit <br />#68149 <br />Depth to GW 48.40 ft. btc on <br />10/16/13 <br />20 <br />CLAYEY SILT WITH SAND: 55% silt, <br />8 <br />25% clay, 20% fine grained sand; <br />3 <br />MW -7-21' <br />15 <br />26 <br />strong brown (7.5YR/5/6), low <br />41 <br />plasticity, hard, moist <br />ML <br />25 <br />3 <br />olive brown (2.5Y/4/4) and <br />18 <br />yellowish red (5YR/5/8); contains <br />4.5 <br />MW -7-26' <br />25 <br />thinly laminated layers of silty fine <br />45 <br />sand <br />----------------- ------------------------------------- <br />SILTY SAND: 65% fine grained <br />sand, 35% silt; olive brown <br />SM (2.5Y/4/4), very dense, moist <br />30—__2 <br />4 <br />18 <br />MW -7-31' <br />28 <br />40 <br />CLAY: 70% clay, 25% silt, 5% fine <br />grained sand; dark greenish gray <br />CL (5G/4/1); low plasticity, hard, moist <br />35 <br />>` <br />35. <br />