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r <br /> MONITORING WELL LOG <br /> PROJECT NAME California Tank Lines LOG OF WELL MW-4 <br /> SITE ADDRESS 3105 S EI Dorado Street TOTAL DEPTH (ft) 50 <br /> Stockton, California WELL DIAM In 2 <br /> DATE STARTED November 7, 2000 DRILLER/COMPANY Amador Arroyo <br />. DATE COMPLETED November 7, 2000 V&W Drilling C-57#720904 <br /> DRILLING METHOD Hollow-stem Auger(short mast) GEOLOGIST/ENGINEER Joseph Ramage, R G #5856 <br /> Split-spoon sam ler Ramage Environmental <br /> 0 <br />. o <br /> V <br /> Q7 N _ <br /> Uj <br /> iY a <br /> � {O <br />. a. n 3 g v Q. <br /> W �n m a ua) z r i DESCRIPTION � <br /> COMPLETION Expansion cap Dolphin lock 8 inch diameter utility box <br />. 0 Asphalt surface approx 4 thick Hand dug first 5 feet 0 <br /> Began soil sampling at 15-feet <br /> 5 5 <br /> r10 10 <br /> 15 12 00 ML SANDY SILT Fine sandy silt light brown very stiff dry 15 <br /> 20 no petroleum odor <br /> 20 15 00 MW4-20 SM SILTY SAND Silty fine-medium sand medium brown medium dense 20 <br /> 2' dry no petroleum odor <br /> 25 12 91 SP SAND Poorly-graded fine sand medium beige-brown medium dense 25 <br /> 16 dry slight petroleum(soap?)odor <br /> 3 <br /> 303 470 MW4-30 CL CLAY Minor silt gray-brown soft moist strong petroleum odor 30 <br /> 4 Static groundwater at 312 feet below ground surface <br /> 35 9 118 MW4-35 CL SILTY CLAY Dark blue-gray stiff moist strong petroleum odor 35 <br />. 40 j0 474 MW4-40 (grades dark olive-gray very moist-wet) 40 <br /> 19 <br /> a (grades moderate petroleum odor) <br /> 45• $7 21 3 MW4-45 ML CLAYEY SILT Medium gray-brown very stiff moist 45 20 slight petroleum odor <br /> 3wV <br /> - <br /> 50 ;, 140 MW4-50 (grades very slight petroleum odor) 50 <br /> 9 Terminated soil bonng at 50-feet Installed 2-inch pvc monitoring well <br />• Screen(0 020)27-50 feet Sand(#3)25-50 feet Surged 10 minutes/Purged 20 gallons <br /> Hydrated bentonite chips 23-25 feet Neat cement grout 0 23 feet <br />