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SOIL BORING LOG Boring No. 15/MW-5 Sheet 1 of 3 Client Arco 5469 Date 617100 Address 130 S.Wilson Way Driller Woodward rig type: SW-61 Stockton,CA Drilling Foreman Van Leonard Project No. D000-336-1 Method Hollow Stem Auger hole diam,: loll Logged By: Doug Guenther Well Pack sand; 53 ft, to 31 ft Well Construction casing: PVC screen: 33'-53'b s bent.; 31 ft. to 29 ft casin diam.: 4" screen slot: 0.020 rout: 29 ft. to 0 ft. Depth to GW: Q 40 ft.Time/Date 'Vft.Time/Date Well Sam le Blow Sam le Depth Constru _ :LITHO " - PID Type Na:": Count . Time. ReeoV: cL Descriptions of Material Scale COLUM1u and Conditions. ppM 2"asphalt ------ -------------------------------------------- ^ 1 10"road base gravel ------ ---------- -------------------- 2 ------- --------- ------ 4 ------ ------------------- -- -- ---------- 15 5 65-6.5 20 1410 100 _____ -------- -- _____ NIL SILT,olive brown,slight white mottling,slight plasticity,hard,dry - 20 0 ----- - ---------------------------------------- t ---------- ------------ 0 ----"------------------------------ -- -- 20 1415 100 - -- - - -----------------"------ - -------------- --- -- - - B5-11.5 20 _ ML SILT, olive brown,white mottling,2%fine-grained sand,slight -------- 40 1 2 plasticity,very stiff p ------ ------ ----------- 1 3 -------- ---- 1 5 P-- 25 1 6--40----- ------- ----- 30 1422 1D0 --- ----------•------- - ----•---------•-------------- ML SSLT, olive brown,slight plasti ,hard,dry - •--•`------'"'---"'-"-'-'------------ — D -------- ------- -Boring; Comments: 93 sand used for filter pack Total Depth 53 feet bgs Delta Envirvnrtteretal Consultants, Inc.