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11/07/98 10:49 $`510 842 4370 : CHEVRON U.S.A. tiflnll/n31 <br /> U <br /> ■ CLIENT STATION # LOCATION ti <br /> EA ENGINEERING. 45 E. Harding Way <br /> TEC N TECHNOLOGY. <br /> Chevron USA Ina SS 9 1918 Stockton, California <br /> TECHNOLOGY. INC. L)HILLINGANU otary ri with 10 in. <br /> LOG OF SOIL BORING: MW5 OD hollow stem auger and 2 in. modified California Split spoon sampler 6 <br /> with brass liners: C57:512268 <br /> Coordinates: N 37 58' 02" WATER LEVEL 36.0 36.34 DRILLING ff! <br /> W 121 17'40" TIME 71:30 START FINISH <br /> - <br /> Elevation top of casing: 13.22 It TIME 8:50 TIME 13:30 <br /> DATE 11-10 11-15 <br /> Casing below surface: 0.23 It IREFERENE grnd I T of C I DATE 1-10-88 FATE 11 10.88 <br /> nc M— _ SURFACEVacant lot with uneven, graded soil <br /> c WELL DEPTH RAPHIC CONDITIONS <br /> ETAIL {Feet) LOG T R Winsor.o DESCRIPTION by: <br /> 0 •. <br /> 1 Dusky yellow brown clay with fragments of sill - <br /> ' 2 <br /> 3 <br /> s 4 <br /> 16 15 13 0 <br /> 5 Yellowish brown silt with tine mica and odd vesicles; <br /> 6 minor clay content but is friable <br /> 8 <br /> 9 <br /> 18 15 8 0 <br /> t0 1 D Yellow brown clay with little silt or sand;very plastic, <br /> 1 1 damp, no odor <br /> 12 <br /> 13 <br /> 14 <br /> 18 15 �� 10 j <br /> 25 15 Yellow brown triable clay, with rare sand grain and <br /> 16 Mn02 or Fe oxides disseminated throughout;.white <br /> local mottling to clay <br /> x 17 <br /> 18 Clay has become more silty <br /> 18 to 19 Very fine grained sand to silt, approximately 10%clay <br /> 12 <br /> ■ 15 2Q as a binder:approximately 10% fine quartz sand grains <br /> Ip Page 1 of 2 <br /> e <br />