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1rd811 logs IAW-ID',NIw-1 t1N'o✓g M\,4j NW-(oD <br /> 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: California Modified Split Spoon Stockton,California <br /> Descriptions By: R.Kuhn <br /> � aa <br /> CL N <br /> Z n ^ 8 n E <br /> Z C S N C) o Well /Boring <br /> of � a) -No Stratigraphic Description Construction <br /> 2 Q a) O d U .ch <br /> a)> U m o <br /> CL w a a E E a)) 3 = m o <br /> W _jm as o O C a) <br /> p w U) rnI rr I m 1Z <br /> 0- Q C� <br /> Steel fiushmount <br /> cover <br /> Not Logged Airimifed to 5'bgs and water knifed to 9'bgs. Locking J-Plug <br /> Sand Drain(1-2' <br /> bgs) <br /> Concrete Pad(0- <br /> 3'bgs) <br /> 10 -10 1 <br /> Begin Sampling at 10'bgs. <br /> (10'- 3.1 N/A NIA 0.0 <br /> 15') _ Light brown to grey brown SILT(ML),trace Sand,moist,odor. Steel Conductor <br /> Casing(0-115- <br /> bgs) <br /> 15 -. <br /> 2 (15'- 2.5 N/A N/A 0.0 <br /> 20') Grey brown to grey CLAY(CL),little Silt,moist,odor. 2"Schedule 80 <br /> PVC Riser(0- <br /> 139'bgs) <br /> 20 -20 3 <br /> (20'- 3.0 N/A N/A 29.4 <br /> 25') _ Grey SILT(ML),trace fine Sand,moist,odor. Outer Cement <br /> Grout(2-115' <br /> bgs) <br /> Grey CLAY(CL),little Silt,moist,odor. <br /> 25 -25 4 <br /> (25'- 3.0 NIA N/A 177 <br /> 30) <br /> Inner cement <br /> grout(2-135- <br /> bgs) <br /> Remarks: bgs-Below ground surface <br /> N/A-Not available/applicable <br /> `� ARCADIS -Outer diameter <br /> ret PVC-Poly vinyl chloride <br /> Infrastructure,environment,facilities AMSL- Above mean sea level <br /> Odorless unless noted <br /> Project Number:80046449.0000 Template:boring_well HSA 2007 <br /> Data FIIe:MW-1D.dat Date:S/19/2009 K.Wynne age. o <br />