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Date Start/Finish: 6/18/2008 to 6/19/2008 1 North Ing:2158400.0066 Wr firing ID:MW-4 <br /> .r Drilling Company: Cascade Drilling,Inc. Easting:6351643.8053 `r/ <br /> Drillers Name: Amador Arroyo Casing Elevation: 30.1205' Client: Chevron Environmental Management <br /> Drilling Method: Hollow Stem Auger Company <br /> Auger Size: 8"OD Borehole Depth: 75' Location:Chevron Service Station 309075 <br /> �..t Rig Type: Truck-Mounted Hollow Stem Rig Surface Elevation: 30.83' 3978 South Highway 99 <br /> Sampling Method: 5'Split Spoon-No Sleeves Stockton,California <br /> Descriptions By: Angela Timmons <br /> d n <br /> n y <br /> = m c. c <br /> Z T a, 8 E <br /> Z Well/Boring <br /> r c v w n fQ c <br /> O o Stratigraphic Description Construction <br /> S Q <br /> > <br /> n a <br /> ... p w 0) � it m Z a Q c� <br /> Steel flushmount <br /> cover <br /> Locking J-Plug <br /> rr Air knife to 8'1"bgs. Concrete Pad(0- <br /> 0.5 bgs) <br /> Sand Drain(0.5- <br /> 1'bps) <br /> 1 0-8 N/A N/A N/A N/A <br /> 5 -5 <br /> V <br /> w <br /> Begin logging at 10'bgs. <br /> Benonite cement <br /> (1'-60'bgs) <br /> rr 2 8-10 N/A N/A N/A N/A <br /> 30 -10 <br /> Brown Sandy SILT(ML),fine Sand,moist. <br /> 77V <br /> 4r 3 10-15 5 N/A N/A 0.9 — <br /> 77 LL <br /> 15 -15 <br /> 4 15-20 3 N/A N/An10 <br /> ... Remarks: bgs=below ground surface;N/A=Not Applicable/Available;AMSL=Above Mean Sea <br /> Level. OD=Outside Diameter;SAA=Same As Above.Odorless unless stated <br /> VPARCADIS otherwise. <br /> Northing/Easting Datum is NAD"". <br /> Y,4re,,fr;x7urt• z r,,,.f..-:r-a;r,r f.:r•-.rr. <br /> Elevation Datum is NAVD". <br /> Project Number:B0046012.0001 emplate:G:\ENV\CHEVRON\Library\Log Piot\2005 Templates\ age:1 of 4 <br /> Data File:MW-4.dat Date:10/7/2008 V.Rubio <br /> v <br />