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Date Start/Finish: 6/17/13-6/21/13 <br />Drilling Company: Cascade Drilling, L.P. <br />Drillers Name: Steve Vibbard <br />Drilling Method: Mud Rotary <br />Auger Size: 12-inch <br />Rig Type: Mud Rotary <br />Sampling Method: Soil Cuttings <br />Longitude: 2116504.2 <br />Latitude: 6334470.0 <br />Casing Elevation: 18.79 <br />Borehole Depth: 208 ft bgs <br />Surface Elevation: 16.2 <br />Descriptions By: S. Pawlak <br />Reviewed By: Darcy Hinkley <br />Well lg ID: INJ-14 • <br />Client: Occidental Chemical Corporation (OCC) <br />Location: Former OCC Lathrop Facility <br />16777 Howland Road <br />Lathrop, CA - DEPTH ELEVATION 'Sample Run Number Sample/It/Type Recovery (feet) IBlow Counts IN-Value IPID Headspace (ppm) [Analytical Sample FJSCS Code [Geologic Column Stratigraphic Description <br />Well/Boring <br />Construction <br />— 190-/90 <br />— 195-/95 <br />— 200-200 <br />— 205-205 <br />SM <br />Trace pea sized gravel <br /> • <br />• #3 Sand <br />Sch80 PVC <br />Sump <br />#3 Sand <br />• <br />— 210.210 Total boring depth at 208 feet bqs. Well depth at 205 feet bgs. <br />Remarks: bgs = below ground surface; ft = feet; PG = professional geologist; <br />PID = photoionization detector <br />ARCAD1S <br />infrastructure Water Environment Buildings <br />Project Number:RV009840.0008 <br />Data File:INJ-14 <br />Template:boring_well HSA 2007 analytical USCS <br />Date: 10/16/2013 S. Pawlak <br />Page: 3 of 3