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SOIL BORING LOG Boring No. IW-5 Sheet 1 of 1 Client Arco Station 5469 Date 3126102 Address 130 South Wilson way Drilling Company: Woodward Drilling Company rig t e:SK-81 Stockton CA Driller: Frank Ramirez Project No. D000-336 Method Hollow Stem Auger hole diam.:8" Logged By: Scott Bittin er Well Pack sand: 59 ft. to 63 ft. Well Construction casin : PVC bent.: 57 ft. to 59 ft. casing diam.:0.75" 2"diameter micro orous tubing installed 60.5'-63' grout:_ 0 ft._ to 57 _ft. Depth to GW: 0 ft.Time/Data V ft.Time/Date Sample Blow Sam le well Depth Descriptions of Materials PID Constru LITHO Type No. Count Time Recov. Ct. Scale COLUMN and Conditions PPM _ No samples collected 0'-45'bgs -- - ------- - - - a 5 — ----- - - - -- --- - ---- ---- - -- -- ------------------------------------- -------------------------- ---------------- -------- 13 _ 5M SILTY SAND 45'-45.6',drown, 15-25%fines,wet,medium dense 20 1-2-:56-10-0-. 4 6 L SILTY CLAY 45.6'-46.5',brown,3-5%very fine gained sand,moist:stiff - - -- ---- - -- - -- - - ---- --- -- --- ----------------- ----- •--- -------- 20 _ 4 7 11 -•19 13:01 100 4 a CL SANDY CLAY with SILT_Ii�ht brown, 10-20%very si 2tRrained sand, moist, -----•_ ---------------------- ----- ------- - 00 — ------------------with 20 _ stiff ------------------------------------ ----- 4 9— - - - -- - ----------------------------------------------•--------------------------- -------- 40 _ ML SANDY SILT 49'49.8',red brown,20-25%very fine grained sand,low 50 1306 90 5 o - - . -- _ _._..__ __ ------------------- -------- _ ML SILT 49.8'-50.3',red brown,low percentage of clay,damp,stiff 5 1 13.12 100 5 2 ML SILT,light brown_low percentage of clay,dry_stiff - 5 3 - - - -- ---- - - — ILTY---LA -53-•-------g--- r n-,_ oist,------------------------------------------------------------ 20 _ CL SILTY CLAY 53-63.3',li ht brown,moist,stiff 50 13:18 -60 5 4 SILT 53.3'-54',light brown with orange iron oxide stains,moist_verX stiff - 5 5 ---------------------------------------- ------- -- --------------------------------------------------------------------------------------------------------------- 46 _ 50 13.24 60 5 6 ML SILT_light brown with-orange iron oxide stains,moist,very stiff - 5 7 29 _ 50 13:30 60 5 8 ML SILT,light brown with orange iron oxide stains,moist,very stiff _____ 5 9 _ SILT,as above,until 59.5' - -• 100 6 0 ML SILT,light brown_lowpercenka�e of clay,moist,stiff - B 1 _ SILT,as above,until 61.5' 100 6 2 ML SANDY SILT 61.5'-62,5',light brown,20.30%fine gained sand damp,stiff - ------ ------------ ------------- ---- - _ — ------ -- - - - -- -- - ------- �+ 6 3 ------ ------------------------- ----- ------- — — ---------------------------------------------•--------------------------------------------------- -------- 13:55 100 — ML CLAYEY SILT 63'-64.5',light brown with orange iron oxide stains,moist, 6 4 stiff Comments:No samples collected 0'-45'bgs.#2/12 sand used for filter pack. Sampled to 64.5',drilled to 63'and completed well.