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Drilling Log <br /> ❑❑❑® GROUNDWATER Monitoring Well OB-2 <br /> TECHNOLOGY <br /> Project Manna Pro owner Manna Pro Corporation See Site Map <br /> Location Stockton CaliforniaProl No 020702819 For Boring Location <br /> Surface Elev - ft Total Hole Depth 50 ft Diameter 1025 in COMMENTS <br /> Top of Casing -- ft Water Level Initial 42 ft Static -- ft <br /> Screen Dia 2 in Length 10 ft Type/Size 0 020 in Samples collected from 7 diameter pilot <br /> 2 in 40 ft SCh 40 PVC borehole Rednlled with 1025 diameter <br /> Casing Dia Length Type augers for well construction Monitoring <br /> Fill Material #3 Lapis Lustre — RI /Core Mobile 8-61/5plit Spoon point consists of 2 diameter observation <br /> - g well and„�nested vapor probes The <br /> Drill Co Gre_gq Drllling Method Hollow Stem Ayger vapor probes are represented by a blas <br /> Mike Bramar DH Homer/D H H 9-22-93 93-1836 line next to the well <br /> Duller Log By Date Permit # <br /> Checked By David Kleesattel License No RG# 5136 <br /> O N C 152 y <br /> a 0� o �, o o t0, Description <br /> m Q a a C) , °o <br /> a Cl s 3 a 1D to (Color, Texture, Structure) <br /> 0 N ° to Trace < 10%, Little 10% to 20%, Some 20% to 35%, And 35% to 50% <br /> U m X <br /> 0 SILT with trace sand brown (10YR5/3) (ver stiff, dam no odor) <br /> , Y P, <br /> r2 <br /> 4 <br /> 8 ML <br /> 10 10 <br /> 3 15 <br /> 20 <br /> 12 <br /> 14 <br /> 18 <br /> CLAY with trace sklt and calcium carbonate nodules, brown <br /> 16 8 (I0YR5/3) (stiff, damp, no odor) <br /> CL <br /> g SILT with trace clay and sand, dark grayish brown (10YR4/2) <br /> 18 81 20 (very stiff, moist, no odor) <br /> 082-18 5 ML <br /> 20 <br /> 20 g Fine SAND with trace silt, brown (10YR4/3), moderately graded <br /> 1 14 (medium dense, subrounded to subangular, damp, no odor) <br /> 20 <br /> 22 SM <br /> g (grades very fine to Erne, (10YR5/3) <br /> 38 10 <br /> 24 1 1 <br /> 062-23 55 <br /> 11 <br /> Ll <br /> 12/22/1993lithlog-mar93 Page 1 of 2 <br />