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CHEVRON REAL ESTATE MANAGEMENT CO. BORING MW4 540 North Aurora/969 East Fremont Streets BORING LOCATION HATE STARTED DAT FINISHED North of SB9 13 November 1995 13 November 1995 ILLING AGENCY GROUND SURFACE ELEVATION AND DATUM Spectrum Exploration, Inc. ' DRILLING METHOD BOR NG TOTAL DEPTH FINAL STATUS CME 95 76.0 ft. Monitoring well DRILLING EQUIPM NT DEPTH TO : FIRST : COMPL. HR. Hollow stem auger WATER : 55.00 ft. : 54.27 ft. ; ft. ' SAMPLING METHOD LOGGED BY Drive Jeffrey S. Pyle SAMPLER TYPE RESPONSIBLE PROFESSIONAL REG. NO. 2.5-inch I.D. split barrel William V. Pipes, R.G. 4226 .. L 11 ? 4 C 3 0 r. -C 0 DESCRIPTION •L C REMARKS eliZ. 0 4 . °q ° o a s a., tz (n m SANDY SILT (ML): dark yellowish brown (10YR 3/4), moist,-60% no petroleum hydrocarbon fines, -30%fine sand, -10%gravel,low plasticity ardor or discoloration 2 observed in any samples collected from this boring ' - - - -' -- - - - - - - - - - - - - - - 4 4-1 11 0 SILTY SAND (SI�f): dark yellowish brown (10YR 4/4),moist, -70% 6 fine sand, -30%IoM plasticity fines,loose 6 s - - 4-2 45 0 LEAN CLAY (CL):dark yellowish brown (10YR 4/4),moist, -100% 10 20 fines,medium plasticity,hard,medium toughness 23 z 4—\4-3 9 0 grades to SANDY LEAN CLAY (C'L): dark yellowish brown(10YR - 16 4/4), moist, -70%fines, -30%fine sand,medium plasticity 23 16 ' 18 4-4 10 0 20 20 32 22 24 4-5 7 0 P661E Y-GRADED SAND (SP):light olive brown (2.5Y 5/3), moist, 25 -100°X, fine sand 41 26- 28- - 4-6 628 4-6 B 0 dark yellowish brown (10YR 3/4) below 27 -30 47 - _- - ----...� - - 32 34 4-7 9 0 CLAYEY SILT/SILTY CLAY (C-L/ML o'r ML/CL):yellowish brown 20 (IOYR 5/4), moist, -100% fines, low to medium plasticity, hard 36 3fi i Figure t Project No. 03077 GEOMATRIX CONSULTANTS, INC.