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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/ tg ID: INJ-14 <br />Client: Occidental Chemical Corporation (OCC) <br />Location: Former OCC Lathrop Facility <br />16777 Howland Road <br />Lathrop, CA <br />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 RID Headspace (ppm) Well/Boring <br />Construction Geologic Column USCS Code Stratigraphic Description Analytical Sample Recovery (feet) Blow Counts Sample/Int/Type ELEVATION Sample Run Number SC <br />SC <br />r: Clayey SAND (SC), dark gray, fine grained sand, loose, wet <br />Fine to very coarse grained sand with gravel <br />Fine to medium grained sand with some gravel <br />. . <br />. . <br />•L__ <br />.. <br />. <br />. <br />' <br />' <br /> <br />. . <br />.... <br />. . <br />. . <br />SM <br />SM <br />Silty SAND with some Gravel (SM), gray, fine grained sand, loose, moist to wet <br />Fine to medium grained sand and wet <br />•• <br />L <br />SC/ , Clayey SAND (SC), dark gray, fine to medium grained sand, loose, wet <br /> . . <br />. . <br /> . . <br />SM <br />SM <br />Silty SAND (SM), dark gray, fine to medium grained sand, loose, wet <br />SC i <br />A <br />Clayey SAND (SC), dark gray, fine to medium grained sand, loose, wet <br />CL Sandy CLAY (CL), dark gray, fine grianed sand, loose, wet <br />Trace gravel present <br />GC <br />G C <br />; , . <br />/a, <br />/.., . • <br />',61 . <br />/ . . <br />Clayey GRAVEL with Sand (GC), gray, fine to medium grained sand, pea sized <br />gravel, loose, wet <br />,___ <br />• <br />SM[ : : I : Silty SAND (SM), gray, fine to medium grained sand, loose, wet <br />—95 -95 <br />— 100-/00 <br />1 105-/05 <br />E- 110-110 <br />115-//5 <br />120-120 <br />125-/25 <br />130-/30 <br />135-135 <br />— 190-140 <br />195-245 <br />150-150 <br />155-/55 <br />160-/ 60 <br />165-/65 <br />170-/70 <br />— 175-/75 <br />— 180-/80 <br />185-180 <br />190 190 <br />#3 Sand <br />6 inch Stainless <br />Steel 0.020" <br />Screen <br />6-inch Stainless <br />Steel 0.020" <br />Screen <br />#3 Sand <br />6 inch Stainless <br />Steel 0.020" <br />Screen <br />#3 Sand <br />6-inch Sch80 <br />PVC Sump <br />Bentonite <br />#3 Sand <br />6 inch Stainless <br />Steel 0.020" <br />Screen <br />6-inch Stainless <br />Steel 0.020" <br />Screen <br />Remarks: bgs = below ground surface; ft = feet; PG = professional geologist; <br />PID = photoionization detector <br />ARCADIS _,Lt <br />infrastructure Water Environment Buildings <br />Project Number:RV009840.0008 <br />Data File:INJ-14 <br />Templateboring_well HSA 2007 analytical USCS <br />Date: 10/16/2013 S. Pawlak <br />Page: 2 of 3