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Project Name Well Number <br /> Former Arco 559 Monitoring Well Construction Log MW-5 <br /> Address Drilling Contractor Ground Surface Elevation: Top of Casing Elevation: <br /> 2085 East Main Street Cascade Drilling 20.74 20.14 <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 /> S.Harrington 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 1/8/2020 <br /> LITHOLOGY SAMPLING DATA <br /> U C <br /> C2 C CL N L O 0 (O N J <br /> O r <br /> Graphic CO Visual o o a ° 3 o Q Well Well a <br /> W Log Cn Description 2 L _ � 0 n m J Diagram Details o <br /> (24.5-25')Silt with Sand;brown,85% <br /> -5 fine sand,15%fines,cohesive <br /> No Recovery <br /> 2"SCH40 PVC <br /> with 0.010 <br /> Screen: <br /> ML Silt;brown,95%fines,5%fine sand, 28.5-30 100 6 25-45 ft. <br /> 12low plasticity,cohesive 18 <br /> 30 <br /> most 0.1 20 Q 30 <br /> No Recovery <br /> -10- <br /> CIL Lean Clay;brown,95%fines,5%fine wet 33.5-35 100 7 <br /> sand,low plasticity,cohesive 8 <br /> 35 0.0 8 35 <br /> No Recovery <br /> -15- <br /> Lean Clay;brown,95%fines,5%fine <br /> 71-7 7CL sand,low plasticity,cohesive wet 38.5-40 100 6 <br /> ML Silt;brown,90%fines,10%fine sand, 8 <br /> 40 non-plastic,cohesive 0.0 11 40 <br /> No Recovery <br /> -20- <br /> Silt;brown,95%fines,5%fine sand, <br /> TTFMML low plasticity wet 43.5-45 100 5 <br /> CL Lean Clay;95%fines,5%fine sand, 8 <br /> 45 trace gravel,low plasticity 0.1 8 45 <br /> -25 Boring terminated at 45 ft.bgs. <br /> 50 150 <br /> SS=Split Spoon Q <br /> antea®group <br /> Page 2 of 2 77 First Encountered Groundwater 3E Static Groundwater XINOGEN® <br />