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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: California Modified Split Spoon Stockton,California <br /> Descriptions By: R.Kuhn <br /> n <br /> CL <br /> =3a g 0- E <br /> > Co E :3Z a S w n Co o Well/Boring <br /> o_ o <br /> a w E E coi Stratigraphic Description Construction <br /> > U <br /> 3 > _ � o <br /> Lu _Jm m a1 0 a� <br /> p W U) to IY m Z a- Q U <br /> Grey fine SAND(SP),little Silt wet,odor, <br /> Grey SILT(ML),trace/little fine Sand,moist,odor. <br /> 11 (60'- 45 N/A N/A 772 — Outer Cement <br /> 65') <br /> Grout(2-115' <br /> bgs) <br /> 12 (65'- 4.0 N/A N/A 345 <br /> Inner cement <br /> 70•) Grey fine SAND(SP),little Silt,moist,odor. grout(2-135' <br /> bgs) <br /> I -, 13 (70'- 4.5 N/A N/A 290 <br /> 2"Schedule 80 <br /> 75) PVC Riser(0- <br /> 139'bgs) <br /> - 14 (75'- 3.0 N/A N/A 46.7 Steel Conductor <br /> 80•) Grey CLAY(CL),dry. Casing(0-115' <br /> bgs) <br /> BO 15 (80'- 3.0 N/A N/A 90.1 <br /> 85') <br /> 16 (85'- 4.0 N/A NIA 42 <br /> go') Grey CLAY and SILT(ML),trace fine Sand,moist. <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-1D-oat Date:5/19/2009 K Wvnnp age: o <br />