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r!MEEIPSO <br />LOG OF BORING MW -11 <br />E nvi ro n m qenta I <br />(Page 2 of 2) <br />Huntbrook Holdings LLC <br />Date Started/Completed 11/12/19 Drill Rig : CME -85 <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: 2171137.6/6347236.0 <br />Installation of Monitoring Wells MW -10 <br />and MW -11 <br />Drilling Company/Driller: Cascade Drilling/G.Whitley Casing Elev. : 26.50 <br />Sample Interval <br />Sampler Type <br />_ Lab Sample <br />SS Split Spoon <br />0 Int. Sampled <br />ST Shelby Tube <br />CU <br />® Lost <br />PS Piston Sampler <br />Well: <br />MW <br />-11 <br />Surf. <br />CJ <br />= <br />AL Clear Acetate <br />Q <br />S <br />= <br />U <br />Elev. <br />W <br />C) <br />0- <br />0 <br />27.07 <br />DESCRIPTIONcn <br />Lab No. <br />m <br />iL <br />30 <br />-3 <br />0 <br />WELL CONSTRUCTION <br />MW -11-30.5' <br />5 <br />24 <br />Date Compl. :11-12-19 <br />Hole Diameter : 8.25 in. <br />Drill. Method : HSA <br />33 <br />WELL CASING <br />Material : Sch. 40 PVC <br />Diameter :2 -in. <br />Joints : flush -thread <br />35 <br />-8 <br />L -M <br />5 <br />35 <br />WELL SCREEN <br />0 <br />MW -11-35.5' <br />10 <br />Material : Sch. 40 PVC <br />13 <br />Diameter :2 -in. <br />Joints : flush -thread <br />Slot Spacing : 0.010 -in. <br />SAND PACK : No. 2/12 Sand <br />TRANSITION : Bentonite chips <br />ANULAR SEAL : Neat Cement <br />40 <br />13 <br />SURFACE : 8 -in. dia. <br />POORLY GRADED SAND WITH <br />0MW1140.5' <br />SILT: fine to medium grained sand; <br />-- <br />10 <br />COMPLETION : steel well box <br />dark brown (5.5YR/3/3), medium <br />10 <br />dense, moist to wet <br />P-S <br />Notes: <br />first groundwater encountered at <br />approx. 43 feet bgs <br />San Joaquin Co EHD Permit <br />#WP0040283 <br />45 <br />-18 <br />— — — — — — — — — <br />5 <br />City of Stockton Revocable Permit <br />POORLY GRADED SAND: medium <br />0 <br />No. RP19-2210 and <br />SP <br />to coarse grained sand; dark brown <br />MW -11-45.5' <br />2Encroachment <br />(7.5YR/3/3), medium dense, wet; <br />Permit EP19-2211 <br />CL <br />driller noted "flowing sand" <br />conditions <br />Depth to groundwater 36.11 ft. <br />SILTY CLAY: olive brown <br />btc. on 11-20-19 prior to well <br />(2.5Y/4/4), low plasticity, hard, wet <br />development <br />POORLY GRADED SAND:fine to <br />50 <br />-23 <br />coarse grained sand; dark brown <br />3 <br />SP <br />(7.5YR/3/3), medium dense, wet; <br />0 <br />MW -11-50.5' <br />5 <br />limited sample recovery due to <br />11 <br />"flowing sand" <br />SILT: contains approx 10% fine <br />sand; olive brown (2.5Y/4/4), very <br />55-- <br />-28 <br />ML <br />stiff, low plasticity, wet <br />55 <br />0 <br />MW -11-55' <br />3 <br />12 <br />12 <br />56.5 <br />60 <br />