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SOIL BORING LOG Boring No B-35 Sheet 6 of 7 Client Arco#6100 Date 8/30/01 A6res s 25775 Patterson Pass Road Drilling Company Western Strata Exploration rig type Mobile Drill B-61 _ Tracy,CA Driller Gordon Jensen Project No D000-340-01 Method_Mud Rotary hole diam 5 5" La ed By Scott Bittin er sample Blow Sample well Depth Descriptions of Materials PID Construc LITHO Typo No Count Time Recov t Scale COLUMN and Conditions PPM 101 102 __ 103 ML SILT h ht brown usnth black man anese,d -------- -------------------------------------------- SILT"--q------------------ `--------R-_--------y----------------------------------------- -------------- - 104 caliche eresent 103 5_:104' -- --- -- - --------------------------------- ---------- ---------------------------------------------------- ---S- 835-105 1145 105 ML SANDY SILT 104 5'-105,30-50%-fine rained sand--m--oist 6 ----------------------------------------------- - ------------------------------------ 106 ML SILT-1.06-1 11 5-10%fine grained-sand--moist hard to7 108 109 --------------------------'---'--'-'IT'LL'-'--'------- ----------------------------------------------------_..--------"-'---'----'-----'-'----'--'--'-'--------- S 1335-110 1200 110 0 S 835-111 1230 111 _ SM SILTY SAND 111'-111 5',50%sand,50%fines sand is well graded tine _________ 112 to medium rained moist ---------------------------------------------------------- 113 ML SILT-112'_11T-hght brown strong caliche cementation,trace black manganese,very hard S B35-114 12 25 114 -------------------------------------`- `- --------- ---------------------------------------------------------------------------------------------------------- 115 116 117 118 _ CL SILTY CLAY 117'-120',light brown,dry,very hard- 119 ------------------------------------------------------ --------------------------------------------------------------------------------------------------------- S B35-120 1250 120 Comments