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Subcontractor Geo Environmental Drilling Log of Boring/Monitoring Well B8/ <br /> Drilling Method V, HS 2400SK-1 Start Date 3-29-04 Start Time 157 Hours WP3 <br /> 'Y' HSA Protect Name Chapin Bros <br /> Project No N0014-001-01 <br /> Sampling Method 2 CMSS Finish Date 3-29-94 Finish Time 248 Hours Project Location 1766 Monte Diablo <br /> First Water/Static Water Level (BGS) 21 1 ft Logged By J Clayton Page 1 of 1 <br /> y� <br /> a <br /> a m Surface Elevation Casing Top Elevation <br /> BannQ Abandonment/ <br /> 1LITHOLOGIC DESCRIPTION Well Construction Details <br /> in 0 (L o q p j V2 (color soil type moisture consistency other) <br /> 0 <br /> 2" ASPHALTIC CONCRETE + 4 BASE ROCK <br /> BackfiDed <br /> with <br /> Neat <br /> Cement <br /> 8 5 <br /> 12 LIGHT BROWN CLAYEY SILT DRY TO DAMP SLIGHTLY <br /> 23 13 18/18 STIFF NO ODOR <br /> 11 10 <br /> 22 LIGHT BROWN CLAYEY SILT WITH TRACE VERY FINE SAND <br /> 3 30 18/18 ML DRY HARD NO ODOR (FEW BLACK INCLUSIONS) <br /> 8 <br /> 12 15- LIGHT GRAYISH BROWN CLAYEY SILT WITH TRACE VERY <br /> 14 12 18/17 FINE SAND AND FEW RUST COLORED MOTTLES DAMP <br /> SLIGHTLY STIFF NO ODOR <br /> 9 <br /> to 15 20- MEDIUM BROWN FINE SANDY SILT WITH SOME CLAY WET <br /> 0 26 18/18 STIFF TO VERY STIFF NO ODOR <br /> BORING COMPLETED AT 230 BELOW GROUND SURFACE <br /> 25 GROUNDWATER ENCOUNTERED IN BORING AT 211 BELOW <br /> GROUND SURFACE <br /> 30 <br /> 35 <br /> 40 <br /> 45 <br /> �1 <br /> 50 <br /> Reviewed by Date <br /> S E A C O R <br /> Revised by Date <br />