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Project Name Well Number <br /> Former Arco 559 Monitoring Well Construction Log MW-2 <br /> Address Drilling Contractor Ground Surface Elevation: Top of Casing Elevation: <br /> 2085 East Main Street Cascade Drilling 22.03 21.70 <br /> Drilling Method Boring Depth Boring Diameter <br /> Stockton California Air Knife/Hollow Stem Auger 45 ft. 8.25 in. <br /> Logged By Approved By Sampling Method Well Depth Casing Type Well Screen Interval Slot Size <br /> E.Diaz R.Bussard Split Spoon 45 ft. 2"SCH40 PVC 25-45 ft. 0.010 <br /> Antea Group Project Number Headspace Monitoring Device Date Drilling Started Date Drilling Completed <br /> BPSTOCK191 PID 12/16/2019 1/9/2020 <br /> LITHOLOGY SAMPLING DATA <br /> �. cO �' 0 c0 T J <br /> m Graphic Visual N � Q E o 3 a Well Well a <br /> U o o am n 0 3 0 m <br /> w Log Description 2 U _ m m J3: Diagram Details o <br /> No Recovery <br /> -5 <br /> 2"SCH40 PVC <br /> with 0.010 <br /> Silty Sand;brown-grey,75%fine Screen: <br /> ■ ■ SM sand,25%non-plastic fines,cohesive 28.5-30 100 5 25-45 ft. <br /> 000 as above;75%fine sand,20%fines, moist 13 <br /> 30 5%gravel 0.0 14 30 <br /> No Recovery s <br /> -10 <br /> CL Lean Clay with Sand;brown,95% 33.5-35 100 7 <br /> fines,5°%fine sand,low plasticity, wet 14 <br /> --357//- cohesive 0.0 21 35 <br /> No Recovery <br /> -15 <br /> ML Silt with Sand;brown,85%fines,15% moist 38.5-40 100 9 <br /> fine sand,non-plastic,non-cohesive 26 <br /> 40 0.1 23 40 <br /> No Recovery <br /> -20-- <br /> CIL Lean Clay;brown/grey,95%fines,5% 43.5-45 100 8 <br /> fine sand,low plasticity,cohesive 15 <br /> 45 as above;brown moist 0.1 20 45 <br /> Boring terminated at 45 ft.bgs. <br /> -25-- <br /> 50 50 <br /> SS=Split Spoon Q <br /> antea®group <br /> Page 2 Of 2 77 First Encountered Groundwater 3E Static Groundwater XINOGEN® <br />