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Geo-Logic Associates BORING NO.: -9A <br /> Boring Log PAGE: 2 OF 3 <br /> JOB NO.: 2011-115 DATE STARTED: 2/21/12 GW DEPTH: 80.65 feet <br /> SITE LOCATION: CORRAL HOLLOW LANDFILL DATE FINISHED: 2/21/12 TOTAL DEPTH: 105 feet <br /> DRILLING METHOD: HOLLOW STEM AUGER ELEVATION: 295.74 <br /> CONTRACTOR: GREGG DRILLING NORTHING: 9986.84 <br /> LOGGED BY: J. HOWER, CEG EASTING: 9273.41 <br /> ui Z ftC.3 <br /> DATE TIME PIDa ? a 0 0 <br /> m o z z <br /> 0 < <br /> DESCRIPTION COMMENTS <br /> v v A ® W <br /> 2/21 9:56 2.5 GP ...same as above. <br /> 'a SP <br /> t.. <br /> �ba <br /> 10:02 2.555 <br /> v'9:6;C <br /> 7.. <br /> 10:10 No recovery, driller notes <br /> f.. <br /> — hard rock and hard drilling. <br /> y e... <br /> BEDROCK CORCORAN CLAY: <br /> Highly weathered, mottled yellowish brown <br /> 10:18 2.5 �` (10YR 5/4), very fine—grained CLAYEY Drilling rate slows. <br /> SILTSTONE with no apparent bedding and minor <br /> iron and manganese staining. <br /> 2.5 Light olive brown (2.5YR 5.3) SILTY CI.AYSTONE <br /> with abundant iron and manganese staining no <br /> apparent bedding. <br /> ...(73') — very moist <br /> cutting, increase in <br /> 10:33 2.5 ...(75') — faintly bedded. moisture. <br /> Smooth drilling. <br /> 10:412 5 _ Very fine SILTY to CLAYEY SANDSTONE with ...(80'-80.5') — driller <br /> manganese staining along subvertical fracture reports water. <br /> surfaces; fractures are rough and very thinly <br /> interbedded in CLAYEY SILTSTONE. <br /> 10:51 2.5 <br /> Cuttings balling up. <br /> 11:06 2.5 <br /> 11:12 <br /> 12:12 Waited for water, none <br /> after 1 hour. <br /> — — — — — — — — — — — — — — — — — — — <br /> 12:22 2.5 Light olive brown (2.5Y 5/3) SILTY CLAYSTONE <br /> with scattered angular to subangular granitic <br /> closts up to 1/2" and laminae of very dark <br /> grayish brown (10YR 3/2) coal/lignite. <br /> — — — — — — — — —— — <br /> Light olive brown-T2.5Y 574jwell—sorted, fine <br /> 12:32 2.5 1 — quartzofeldspathic SANDSTONE interbedded with <br /> poorly sorted, poorly consolidated granitic <br /> GRAVELLY SANDSTONE. <br /> CONTINUED ON NEXT PAGE <br /> The data presented on this log is a simplification of actual conditions encountered and applies only at the location of this boring <br /> and at the time of drilling. Subsurface conditions may differ at other locations and may change with the passage of time. <br />