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Project: RESD - Deuel '&cational Institute �og of Monitoring Well: <br /> Loctttit)n: 23500 Kasson Road Tracy, C Project Number: 17325632. MW-23 <br /> Dates Drilled: 11/17/04 Total Depth: 21 Borehole Diameter: 8.25 inch Logged By: Mike Hall <br /> Drilling Contractor: WDC Exploration and Wells Well Construction Date: <br /> 11117/04 Checked By: Vernon Elarth,RG 7120 <br /> Drill Rig Type: Limited Access CM-75 Casing Diameter: 2-inch Casing Type: SCH 40 PVC Depth to Water: 6.78 Date/Time: 12/16/04 <br /> Drilling Method: Hollow Stem Auger Screen Interval: 6-21' Slot Size: 0.010-inch Sampling Method: Cuttings <br /> Comments: Sewage Treatment Pond Well-stovepipe slicks up—T above ground surface <br /> n <br /> 0 <br /> o v o m <br /> b U <br /> L u E 8 Ei <br /> LITHOLOGY DESCRIPTION WELL CONSTRUCTION <br /> Fill F]Bentoni� <br /> e vault box set in <br /> Sandy Clay(CL). Light olive brown(2.5Y 5/3),10%very fine <br /> to fine grained sand,medium plasticity,very stiff,moist,mottled <br /> with yellow-orange von oxide staining. <br /> Chips 3-4.4' <br /> 5 S <br /> Static Water6.78' <br /> I . <br /> 10 [ 2-inch SCH 40 PVC 10 <br /> Sand(SP). Light olive brown 5/3), fine to mium edi 0.010-inch Slot Screen 6-21' <br /> grained sand,rounded grains,medium <br /> m dense,saturated. #0130 Transition Sand 4.4T <br /> #1112 Filter Pack Saud 5-21' <br /> 15 5 <br /> Saud(SW). Light olive brown(2.5Y 513),very fine to coarse <br /> ..0 gained-well graded(clasts are 70%quartz,15%feldspar,15% <br /> 10 mica),trace silt,saturated. <br /> :p <br /> r.: c: a" <br /> 20 <br /> 2870 Gateway Oaks Dr.,Sic 300 <br /> UM Sa.m,CA 95833 <br /> 916-679-2000 <br />