Laserfiche WebLink
ProjeCt: _AASF Washrack Boring Investigation Boring: MW-5(SB-02) Pg. 2 of 2 <br /> Drilling Cc: 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: V ATD 40 1 At Completion 31.5 <br /> STIMATED w <br /> LL LU > U U %OF <br /> J -J x x OAJSA <br /> F <br /> Lu a- o_ �- U COU <br /> CL < Q C9 d U 2 <br /> o > <br /> z o a (n 0 , DESCRIPTION w D U) GR 2 <br /> Sandy Fat Clay(CH);yellowish brown(10YR <br /> 11 bags(1100 lbs.) 5/4),slightly moist,hard;±25%fine sand,some <br /> - #2/12 Sand Filter silt,white clay stringers,blocky structure. No <br /> Pack hydrocarbon odor or staining. <br /> Groundwater measured at-31.5 ft bgs(10:05 <br /> 3/29/2011) <br /> Groundwater measured at-32.5 ft bgs(09:45 <br /> 3/29/2011) <br /> 35 <br /> 28 100 0.0 Similar to above. Dark yellowish brown(10YR 35 <br /> 4/6),slightly moist to moist,±40%sand. No <br /> hydrocarbon odor or staining. <br /> 40 50/100 0.0 40 <br /> 5" Sandy Fat Clay with Silt(CH);light olive brown <br /> Screen Interval: (2.5Y 5/3),saturated,very hard;some pinhole <br /> 26-46'bgs(4"Schporosity noted(±1%),abundant iron oxide <br /> 40 PVC 0.010 slot) 0/6100 staining/stringers. No hydrocarbon odor or CH <br /> 20 100 staining. <br /> Groundwater encountered at-40 It bgs(09:12 <br /> 3/29/2011) <br /> 45 50/100 45 <br /> 5.5" Sandy Fat Clay(CH);yellowish brown(10YR <br /> 5/4),saturated,hard;±30%fine to medium sand. <br /> 56 100 No hydrocarbon odor or staining. <br /> Becomes dark yellowish brown(10YR 4/4). <br /> a Total Depth=48 feet bgs <br /> Groundwater encountered at-40 ft bgs(09:12 <br /> 3/29/2011) <br /> o Groundwater measured at-31.5 ft(10:05 <br /> 3/29/2011) <br /> 0 <br /> z Well Construction: <br /> w 12"dia.Traffic Rated Vault Box <br /> ¢ Portland Cement Grout=611 lbs(13 bags) <br /> o making 70 gallons <br /> Transition Seal: Hydrated 1/4"Time Release <br /> a Bentonite Pellets=2.5 five-gallon buckets <br /> q Filter Pack: #2/12 Cemex Sand=1100 lbs(11 <br /> bags)-surged-15 minutes <br /> z <br /> 0 <br /> m <br /> Y <br /> N <br /> Z <br /> O <br /> Y <br /> 0 <br /> O <br /> H <br /> Lithologic Log and Well Construction Details of MW-5(SB-02) <br /> z <br /> For <br /> TIE <br /> O CA ARNG <br /> 3 <br /> Oneida Total Inte Enterprises ted ra <br /> P Project Location Project No. Fig. �1 <br /> w <br /> o �_ AASF Stockton 2000 Stimson Rd. 2009069 <br />