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MONITORING WELL LOG <br /> PROJECT NAME Former RINO Service Station LOG OF WELL MW-6 <br /> SITE ADDRESS 1001 E Yosemite Avenue BOREHOLE DIAM (in) 8 <br /> ' Manteca California WELL DIAM In 2 <br /> DATE STARTED October 23 2002 DRILLERICOMPANY Eddie Mitchell <br /> DATE COMPLETED October 23 2002 Mitchell Drilling(C-57#672617) <br /> ' DRILLING METHOD Hollow-stem Auger GEOLOGIST/ENG[NEER Joseph Ramage, R G #5856 <br /> S lit-spoon Sampler Ramage Environmental <br /> N [n c ~ <br /> ' <br /> ?n. tit t� 1' 2 � <br /> LU C <br /> E- W Q d LXl (n O <br /> CL N Q <br /> O Un cc a Q)) z D DESCRIPTION (D p <br /> 0 Asphalt surface Hand dug first 5-feet 0 <br /> I <br /> ' 5 7 00 SM SILTY SAND Silty fine sand medium brown dry,loose 5 <br /> 8 no petroleum odor <br /> I <br /> i <br /> 10 e 00 SP SAND Poorly-graded fine sand,some silt,light tan,dry 10 <br /> medium dense, no petroleum odor 7 <br /> `a <br /> ' 15 ;3 00 (grades some thin layers of medium sand dense) 15 <br /> 25 <br /> I <br /> 20 ;; 00 MW6-20 ML SANDY SILT Some clay, light orange-tan,moist,very stiff 20 <br /> 22 no petroleum odor <br /> ' Static groundwater at 21 1 feet bgs on 10/23/02 <br /> ' 25 20 00 ML SILT Medium beige,wet,very stiff no petroleum odor 25 <br /> 26 <br /> ' 50l6 <br /> 30 00 MW6-30 SP SAND Poorly-graded fine to medium sand medium tan 30 <br /> ' wet very dense, no petroleum odor <br /> Terminated boring at 30 ft Installed 2 in diameter pvc monitoring well <br /> ' 35 Well Screen(0 020-m)from 15 to 30 ft Filter pack of#3 Sand from 13 to 30 ft 35 <br /> Surged 5 min and purged 3 gals Weak recharge <br /> Hydrated bentonite from 11 to 13 It Neat cement from surface to 11 ft <br /> ' Completed well with water-tight cap and 8-m street box <br /> 40 40 <br /> ' Page 1 of 1 <br />