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Project: AASF Washrack Boring Investigation Boring: MW-5(SB-02) Pg. 1 of 2 <br /> Drilling Co: Precision Sampling Drilling Method: Hollow-Stem Auger Date Started: 3/29/11 <br /> Location: 2000 Stimson Rd,Stockton,CA Sampler/Drop: Split Spoon/30" Date Completed: 3/29/11 <br /> Logged by: DBS Reviewed by: <br /> Surface Elev.: Water Depths: Q ATD 40 t At Completion 31.5 <br /> } <br /> H <br /> LL <br /> ESTIMATEw <br /> 12"Flush Mount W U %OF <br /> Q W ~ J <br /> F Traffic Rated Vault -J w a- EL 0 m <br /> w Box and Locking Well j tY p Q <CD w �7SA <br /> O <br /> o Cap z o a rn (7 OJ DESCRIPTION D U) <br /> 2 . <br /> Gravelly Fat Clay(CH);very dark grayish brown <br /> (10YR 3/1),moist. No hydrocarbon odor or <br /> staining. <br /> 5 70 gallons grout(13- 15 100 0.05 CH <br /> 47 Ib.bags) Fat Clay(CH);brown(10YR 5/3),moist,firm; <br /> high plasticity,medium toughness,excavates as <br /> small clumps. No hydrocarbon odor or staining. <br /> 10 12 100 0.0 Sandy Fat Clay(CH);dark yellowish brown 10 CH <br /> (10YR 4/4),moist,firm;abundant fine sand and <br /> silt. No hydrocarbon odor or staining. <br /> 15Riser Casing:4"Sch. 38 100 0.0 Clayey Sand(SC);dark yellowish brown(10YR 15 SC <br /> 40 PVC 4/4),moist,dense;fine medium sand with <br /> ±25-30%clay. No hydrocarbon odor or staining. <br /> N <br /> N <br /> F- 20 18 100 0.0 - -- 20 SW <br /> o Well Graded Sand(SW);light olive brown(2.5Y <br /> 5/6),slightly moist to moist,loose to medium / <br /> z dense. No hydrocarbon odor or staining. <br /> z --------- - -------/ <br /> 3 Fat Clay(CH);light olive brown(2.5Y 5/4),very <br /> w 2.5 buckets(5-gallon) slightly moist to slightly moist,hard;trace silt/fine <br /> Hydrated 1/4"Time sand(<5%). No hydrocarbon odor or staining. <br /> o Release Bentonite <br /> J <br /> Pellets <br /> a <br /> 25 14 100 0.0 —— — — —— 25 CL <br /> z Sandy Lean Clay with Silt(CL);yellowish brown <br /> it <br /> 0 (10YR 5/4),slightly moist to moist,firm;medium <br /> m plasticity,low toughness. No hydrocarbon odor <br /> or staining. <br /> x <br /> z <br /> 0 <br /> Y <br /> a 30 <br /> ------ -------- 30 <br /> (continued) <br /> Lithologic Log and Well Construction Details of MW-5(SB-02) <br /> � o <br /> TIE For <br /> z CA ARNG <br /> w Oneida Tot3: <br /> al Integrated Enterprises 9 P Project Location Project No. Fig. <br /> AASF Stockton 2000 Stimson Rd. 2009069 32a <br />