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AdvancedG BORING LO GeoEnvironmentalInc. BOREHOLE NO MW-7 837 Shaw Road, Stockton, CA 95215 (209)467-1006 FAX (209)467-1118 TOTAL DEPTH 35 Feet Project Bob's Muffler Shop Drilling Co West Haz-Mat Dnlling Corp Site Location 466 Moffat Boulevard Rig/Auger Type LAR/8"Dia Hollow Stem Augers Manteca, California Logged By C F Lee Reviewed By B W Millixian Protect No AGE-NC-98-0520Reviewed Drilled 02/25/02 Notes s? Water level during drilling Page 1 of 2 = Water level in completed well Depth Sample Blows PID Sod USCS Class and well Well I1D {per 6") (ppm) Symbol Sod Description Completion Description I o Well cover/ensty box -5 -- -- _— SM Greenish brown,dry,unconsolidated fine sand Cement grout sea]from with silt(<20%) 0 5 to 11'bsg -10 MW-7-10' 35/34/40 3 5 SP Yellowish green,moist,unconsolidated fine sand, upper 1/3 L ontamed root material Bentonite seal from F I to 13' bsg -15 MW-7-15' 18/25/34 39 SP Yellowish green,wet,unconsolidated medium sand I I SC Yellowish green wet,clayey fine sand,soft with lowplasticity I -20— MW-7-20' 17/47/50 45 I43 sand from 13 to 35' SP Olive green,moist,unconsolidated medium sand bsg Lto Olive green,moist clay with slit(<20%),moderate ightoughness,with high plasticity I -25— MW-7-25' 18/20/26 45 5M Olive green,saturated,unconsolidated tine sand Screen interval fmm 15 with silt(10%) to 35'bsg,0 020-inch I Slots -30—I MW-7-30' 18/35/36 41 SP Same as above CL Olive green,moist to saturated silty clay,moderate toughness with low to medium plasticity - 35— MW-7-35' 17/48/50 42 End cap at 35' SP Dark olive green,saturated,unconsolidated or very I soft fine sand ML Dark olive green,saturated clayey silt,moderate