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LOG OF EXPLORATORY BORING PROJECT NUMBER 939-02.06 BORING N0. - P2 PROJECT NAME San Joaquin Landfill Development Site PAGE 1 OF 3 BY BAB DATE 6/05-06/87 SURFACE ELEV. 107.72 POCKET PENETRA- N LITHO- TORVANE PENETRO- TION z 9 z J GRAPHIC DESCRIPTION METER a > a (B (TSF) (TSF) Ft.)s/ 3 COLUMN c ML SANDY, CLAYEY SILT, light brown (7.5YR, 6/4); slightly clayey; 20(+)% fine- to coarse-grained sand; slight plasticity; dry. @-2' : yellowish red (5YR, 5/6) ; 30% fine to medium-grained, trace coarse- grained sand; quartzose; slightly damp. SILT, reddish yellow (7.5YR, 6/6) ; 15- 5 20% fine- to medium-grained sand; SM dry. @4' : becomes slightly clayey; grades to sandy silt below 4.5' SILTY SAND, strong brown (7.5YR, 5/6); 10-30% fines; fine grained; mica- ceous; ica- ceous; damp. SP SAND, light yellowish brown (10YR, 6/4); medium grained; quartzose with 30% 3410 SM mafic; 10% mica flakes; very poorly graded; subangular grain shape; slightly damp. SILTY SAND, brown (10YR, 5/3); 39% fines; very fine to fine grained; denser than sand above; trace iron stains. @15' ° light brownishy ra 10YR, 9 6/2); 46% fines; very fine to fine grained; minor and manganese stains; 56/ 15 trace fine root holes; damp. 10" @16' : strong brown (7.5YR, 5/6); 15- ML 25% fines; fine grianed; minor medium to coarse grained; 95(+)% quartz iron oxide coated; slightly damp. SANDY SILT, yellowish red (5YR, 4/6); 49.5% predominantly fine- to medium- 53/ grained sand; damp. 10.5" 20 REMARKS Drilled with hollow-stem auger drilling equipment to a total depth of 40.5 feet. Sampling was performed by driving a 2-1/2-inch ID split-spoon sampler. Boring was converted to a 2-inch diameter permeameter (see Plate ). PLATE A-5