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SOIL BORING LOG Boring No MW-5 Sheet 4 of 4 Client Arco Station 2186 Date 8114101 Address 3212 North California Street Dnlling Company Woodward Drilling Company _ rig type BK-81 Stockton CA Driller Frank Ramirez IIJONO D000-330 Method Hollow Stem Auger hole dram 8" Logged By Scott Bitten er Sam le Blow Sam le Well Depth Descriptions of Materials PID Construe LITHO Type No Count Time Recov t Scale COLUMN and Conditions PPM 25 _ S MW5-61 50 7-58-.---70-- s 1 ML SANDY SILT,brown 15-20%fine grained sand moist-wet hard 1 s2 6 3 6 4 6 5 S - ---------MW5-66 9 8-05-. 40 s 6 SW SAND,fine to coarse grained medium graded, 1%fin s,verywet 1 12 loose-- — ----------- -------'------- -`- -- - - ----- -- -------------------- --------- _ 6 7 6 8 6 9 7 0 ---------------------------------- --------- --------- ------------------------------- --------- 8_20 20 30 7 1 SW SAND fine to coarse grained,medium graded_ 1%fines very wet, - 2 loose - -------------------- -------- ------ ------ " ------- 7 2 ------------------------------------------------------- -------------------------------------------------------------------------------------------------- --------- 7 3 7 4 7 5 ------------------------------------------------------- -------------------------------------------------------------------------------------------------- --------- 8 35 25 7 6 SW SAND fine to medium grained, <5%coarse grained sand 3-5%fines, 41 _ very wet loose 7 7 7 8 7 9 - -------- ------ ----------- --------- - -- - - ---- -----------`------- ---------------------"-----'------------------------- --------- - CLAY,light brown with white caliche and black manganese,damp S MW5-81 9 00 60 e o CL very hard Comments Total depth of boring is 81 feet bgs Well surged for 10 minutes prior to installing sanitary seal