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Subcontractor Geo Environmental Drilling <br /> Log of Boring/Monitoring Well B11/ <br /> Drilling Method SIMGO 2400SK-1 Start Date 3-30-94 Start Time 1040 Hours W` 6 <br /> 7 C' Project Name Chapin Bros <br /> Project No NO014-041-01 <br /> Sampling Method 2 CMSS Finish Date 3-30--94 Finish Time I135 Hours protect Location 1766 Monte Diablo <br /> First Water/Static Water Level (BGS) 20 9 ft Logged By d Clayton Page 1 of 1 <br /> _ a <br /> 8 is Surface Elevation Casing Top Elevation <br /> a to ar d m _ <br /> cI m p �' `a � C Boring Abandonment/ <br /> a> CL a SAF LITHOLOGIC DESCRIPTION Well coxtatMCtion Details <br /> o <br /> vo mrn <br /> u 2 ° (color soil type moisture consistency other) <br /> aiw� 5oa rmn a oar e <br /> 0 2' ASPHALTIC CONCRETE + 4 BASE ROCK <br /> CL <br /> MEDIUM GRAY SILTY CLAY, DAMP Backfilled <br /> Neat <br /> Cement <br /> 6 5 <br /> 7 ML GRAYISH MEDIUM BROWN FINE SANDY SILT TO SILTY FINE <br /> 0 9 18/13 SAND DAMP LOOSE TO SLIGHTLY DENSE NO ODOR <br /> � Ilr r <br /> 9 10 f ! I I MEDIUM BROWN FINE SAND WITH SOME SILT DAMP LOOSE <br /> 7 11 18/18 113111 TO SLIGHTLY DENSE, NO ODOR <br /> � � I <br /> I SM <br /> Ililil <br /> 9 15 <br /> SLIGHTLY GRAYISH MEDIUM BROWN FINE SAND DAMP TO <br /> 0 13 18/18 I I ! i M01ST LOOSE TO SLIGHTLY DENSE VERY SLIGHT ODOR <br /> I II <br /> 5 20 ML MEDIUM GRAY SILT WITH SOME CLAY AND TRACE VERY <br /> 2 8 18/18 FINE SAND WET SOFT NO ODOR <br /> ;25 <br /> BORING COMPLETED AT 225 BELOW GROUND SURFACE <br /> GROUNDWATER ENCOUNTERED IN BORING AT 20 9' BELOW <br /> GROUND SURFACE <br /> 63540 30- <br /> 35- <br /> 40 <br /> i <br /> 45 <br /> 50 <br /> Reviewed by Date <br /> S E A C O R <br /> Revised by Date <br />