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Project Name Well Number <br /> Former Arco 559 Monitoring Well Construction Log MW-1 <br /> Address Drilling Contractor Ground Surface Elevation: Top of Casing Elevation: <br /> 2085 East Main Street Cascade Drilling 22.01 21.60 <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 12/17/2019 1/8/2020 <br /> LITHOLOGY SAMPLING DATA <br /> U C <br /> C 2 C CL N L 00 (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 U _ � 0 m m J Diagram Details o <br /> No Recovery <br /> -5 <br /> 2"SCH40 PVC <br /> with 0.010 <br /> Silty Sand;brown,75%fine sand,25% Screen: <br /> ■ ■ SM non-plastic fines,non-cohesive 28.5-30 100 6 25-45 ft. <br /> • • • SP Poorly Graded Sand;green-grey,95% moist 17.4 8 <br /> 30 ML fine sand,5%fines,non-cohesive, 62.4 14 30 <br /> heavy odor <br /> Silt;green-grey,90%fines,10%fine s <br /> sand,non-plastic,cohesive <br /> -10 No Recovery <br /> CL Lean Clay with Sand;grey 33.5-35 100 7 <br /> green/brown,90%fines,10%fine wet 10 <br /> 35 sand,low-medium plasticity,cohesive 228.1 16 35 <br /> No Recovery <br /> -15 <br /> CL Lean Clay;grey with chunks of red moist 38.5-40 100 7 <br /> (oxidation),90%fines,10%fine sand, 9 <br /> 40 low plasticity,heavy odor 159.5 15 40 <br /> No Recovery <br /> -20-- <br /> CIL Lean Clay;grey/brown,95%fines,5% 43.5-45 100 8 <br /> fine sand,medium plasticity,cohesive, 15 <br /> 45 some odor moist 77.8 17 45 <br /> Boring terminated at 45 ft.bgs. <br /> -25-- <br /> 50 L L 50 <br /> SS=Split Spoon Q <br /> antea®group <br /> Page 2 of 2 77 First Encountered Groundwater 3E Static Groundwater XINOGEN® <br />