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Woodward-Clyde Consultants + PROJECT NAME OSA Stockton - NO _ _872 x3320001 <br /> MONITORING WELL LOCATION Caltrans Shap 10 (MW 6) ELEVATION AND DATUM +99 71 ft <br /> . DRILLING AGENCY Datum Exploration DRILLER Steve Moore/Anthony DATE STARTED 317/90 to 31"D <br /> FINISHEDDATE <br /> DRILLING EQUIPMENT GME 75 COMPLETION 63 5 fL SAMPLER Modified <br /> DEPTH Gahlornia <br /> DRILLING METHOD 8 Hallow stem auger DRILL BIT CME 4 Tooth Carbide NO OF DIST UNDIST <br /> SAMPLES <br /> SIZE AND TYPE OF CASING 4"PVC Screwthreaded FROM 635 TO 05 FT I FvF1 FIRST 566 COMPL 24 HRS <br /> 56 7 568 <br /> TYPE OF PERFORATION 0 020 stalled FROM 630 TO 360 FT LOGGED BY CHECKED BY <br /> SIZE AND TYPE OF PACK #3 Clemintma Sand FROM 635 TO 350 FT G Heyman M Bonkowski <br /> TYPE OF NO Y Bentanrte Pellets FROM 350 TO 330 FT <br /> SEAL NO 2 Neat Cement <br /> FROM 330 TO surface FT <br /> Q 3 <br /> Cn V <br /> r 2 c <br /> o m MATERIAL DESCRIPTION a <br /> to U <br /> A�phaltic Concrete and Base Material_ — _ — — _ — — _ _ _„ — _ <br /> Interbedded CLAY SILT and SAN{ <br /> dark gray to medium brown, 1 6' layers of soil, Clay Is dark <br /> gray and medium brown silt and sand medium brown,clay CL <br /> low high plasticity silt low plasticity, sand very fine, moist, No Hydrocarbon Odor CH <br /> 1gradational bounderles Ovm s 0 ppm ML, <br /> S — — — — — — _ _ — _ _ _ — — — — — Sw <br /> SILTY CLAY <br /> z medium yellow brown, little very fine sand layers grade to No Hydrocarbon odor <br /> 10 '4 clayey silt low plasticity, damp, thin (<1mm) caliche veins Ovm 0 ppm <br /> Includes 1 2 layer of very fine clayey sand No Hydrocarbon Odor <br /> 3 Ovm = 0 ppm <br /> 15 <br /> SILTY CLAY- CLAYEY SILT <br /> 4 medium dark yellow brown, little to occasionally some very No Hydrocarbon odor <br /> 20 fine sand, few dark brown stains, damp low plasticity Ovm 0 ppm <br /> 5 medium yellow brown, few dark brown Iron"concretions" No Hydrocarbon odor <br /> <2mm diameter rounded, tan streaks throughout, possibly Ovm -0 ppm <br /> 25 old root traces <br /> SILT( CLAY to CLAYEY SILT <br /> 6 medium yellow brown, little very fine sand, low plasticity, No Hydrocarbon odor <br /> 30 damp, homogeneous Ovm-0 ppm <br /> — — — <br /> SILTY SAND to SANDY SILT — __.. � ._.. __.. T <br /> medium yellow brown, little to some clay,very fine sand, No Hydrocarbon odor <br /> D damp, homogeneous Ovm m 0 ppm <br /> LOG OF MONITORING WELL NO MW-6 SHEET 1 OF 2 <br />