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Project Name Well Number <br /> Former Arco 559 Monitoring Well Construction Log MW-6 <br /> Address Drilling Contractor Ground Surface Elevation: Top of Casing Elevation: <br /> 2085 East Main Street Cascade Drilling 20.80 20.40 <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 1/7/2020 <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 m m J Diagram Details o <br /> No Recovery <br /> -5- <br /> 2"SCH40 PVC <br /> with 0.010 <br /> Screen: <br /> CL Sandy Lean Clay;brown,75%fines, 28.5-30 100 10 25-45 ft. <br /> 25%fine sand,low plasticity,cohesive moist 0.2 12 <br /> 30 15 30 <br /> No Recovery <br /> _10- <br /> MIL Sandy Silt with Gravel;brown,70% 33.5-35 100 8 <br /> fines,20%fine sand,10%gravel, moist 0.3 13 <br /> non-plastic,cohesive <br /> 35 17 35 <br /> No Recovery <br /> -15 s <br /> ML Silt with Sand;brown,90%fines,10% 38.5-40 100 5 <br /> fine sand,non-plastic,cohesive wet 0.1 12 <br /> 40 17 40 <br /> No Recovery <br /> -20- <br /> Silt with Sand;reddish-brown,80% <br /> ML fines,20%fine sand,low plasticity 43.5-45 100 5 <br /> as above;brown,95%fines,5%fine wet 0.1 12 <br /> 45 sand,no plasticity moist 15 45 <br /> -25 Boring terminated at 45 ft.bgs. <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 />