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Date Start/Finish: 1/20/09-1/26/09 Northing:2171642.9626 Well/Boring ID: MW-1D <br /> Drilling Company: Cascade Drilling,Inc. Easting:6335191.8827 <br /> Driller's Name: Tory Salazar Casing Elevation: 12.96'AMSL Client: Chevron Environmental Management <br /> Drilling Method: Hollow Stem Auger Company <br /> Auger Size: 8-inch, 15-inch Borehole Depth: 144.5'bgs Location: Former Unocal Station#9-8227 <br /> Rig Type: CME 95 Surface Elevation: N/A 242 North Sutter Street <br /> Sampling Method: California Modified Split Spoon Stockton,California <br /> Descriptions By: R.Kuhn <br /> m a.o <br /> n <br /> M a _ 8 a E <br /> T N E 7 <br /> zC S n cn o Well/Boring <br /> C m U <br /> _ � o = Stratigraphic Description Construction <br /> > U <br /> CL n > o <br /> W J m m d O O m N <br /> p W U U) m Z tZ Q U <br /> Grey CLAY(CL),little Silt,moist,odor. <br /> -J 5 (30'- 3.5 N/A N/A 2210 — <br /> 35') Grey SILT(ML),trace/lime fine Sand,wet,odor. Inner cement <br /> grout(2-135' <br /> bgs) <br /> 6 (35'- 2.5 N/A N/A 1729 <br /> 40') — <br /> ao -407 <br /> (40'- 4.5 N/A N/A 1858 2"Schedule 80 <br /> 45') Grey fine SAND(SP),moist,odor. <br /> PVC Riser(0- <br /> 139'bgs) <br /> Grey SILT(ML),little fine Sand,moist,odor. <br /> 45 -45 8 <br /> (46- 4.0 N/A N/A 1754 <br /> 50') Grey fine SAND(SP),little Silt,wet,odor Outer CementGrout(2-115' <br /> bgs) <br /> so -so 9 <br /> (50'- 2.5 N/A N/A 1342 <br /> 55') Steel Conductor <br /> Casing(0-115' <br /> bgs) <br /> -55 10 (55'- 4.5 N/A N/A 375 <br /> 60') <br /> Remarks: bgs-Below ground surface <br /> N/A-Not available/applicable <br /> ARCADIS OD-Outer diameter <br /> PVC-Poly vinyl chloride <br /> Infrastructure,environment~ facilities AMSL- Above mean sea level <br /> Odorless unless noted <br /> Project Number:B0046449.0000 Template:boring well HSA 2007 <br /> Data File:MW-1 D.dat age: o <br /> Date 5/19/2009 K_Wvnna <br />