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Date Start/Finish: 1/20/09-1/26/09 Northing:2171642.9626 Well/Boring ID: MW-1 D <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: Califomia Modified Split Spoon Stockton,California <br /> Descriptions By: R.Kuhn <br /> d Ea <br /> D <br /> CL 2 <br /> CL E <br /> Z >a m E � <br /> j w y M o Well/Boring <br /> X S Z. o ? m U Stratigraphic Description Construction <br /> d <br /> o <br /> n a > o <br /> > U <br /> U-1 Lu U) (0 IY CD Z d Q Ur <br /> Grey CLAY and SILT(ML),trace fine Sand,moist. <br /> 90 17 (90'- 3.0 N/A N/A 2.6 <br /> 95) <br /> B' 18 (95'- 3.0 N/A N/A 0.7 <br /> 100') — Grey SILT(ML),trace fine Sand,wet. <br /> /`r 19 (100' 3.0 N/A N/A 1.4 _ Steel Conductor <br /> 105') Grey SILT and fine SAND(MUSP),moist,odor. Casing(0-115' <br /> bgs) <br /> 105-105 20 (105'- 4.0 N/A N/A 1.22"Schedule 80 <br /> 110.) Grey SILT,little to some Clay,trace fine Sand,moist. PVC Riser(0- <br /> 139'bgs) <br /> 114110 21 (1101_ 4.0 NIA NIA 0.8 Ouler Cement <br /> 115,) Grey CLAY(CL),dry. Grout(2-115' <br /> bgs) <br /> 22 (115'- N/A N/A N/A N/A Inner cement <br /> b )) <br /> 9r grout(2-135' <br /> 120') <br /> Remarks: bgs-Below ground surface <br /> N/A-Not available/applicable <br /> ARCADIS OD-Outer diameter <br /> PVC-Poly vinyl chloride <br /> AMSL- Above mean sea level <br /> Infrastructure,environment,facilities Odorless unless noted <br /> Project Number:B0046449.0000 Template:boring_well HSA 2007 flage.4 o <br /> Data File:MW-1D.dat Date:5/19/2009 K.Wynne <br />