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1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />and at the time at drilling. Subsurtace conditions may litter at other locations and may change wim the passage at time. <br />@O® O9 IC Associates <br />BORING NO.: <br />MW -9 <br />L4 <br />Boring Log <br />PAGE: <br />2 OF 2 <br />JOB NO.: <br />2011-115 DATE STARTED: <br />10/12/11 <br />GW DEPTH: <br />66.4 feet <br />SITE LOCATION <br />COMA HOLLOW LANDFILL DATE FINISHED: <br />10/13/11 <br />TOTAL DEPTH: <br />91.5 feet <br />DRILLING MEMO. <br />8" • HOLLOW STEM AM ELEVATION: <br />296.9 <br />COMMENTS <br />CONTRACTOR: <br />GREGG DRILLING NORTHING: <br />ND <br />LOGGED BY: <br />W. LOPEZ, CEG FASTING: <br />NO <br />and at the time at drilling. Subsurtace conditions may litter at other locations and may change wim the passage at time. <br />aI � <br />L4 <br />z <br />DAZE <br />THE <br />PID <br />v <br />zis: <br />0 <br />i Z <br />Pi <br />DESCRIPTION <br />COMMENTS <br />0 <br />10/13 <br />7:57 <br />0 <br />91/8" <br />SPT <br />SM <br />....same as above. <br />BEDROCK - CORCORAN CLAY: <br />ery moist. <br />Light olive brown (2.5Y 5/3), stiff CLAYEY <br />8'01 <br />0 <br />16 <br />SPT <br />SILTSTONE with moderate magnesium oxide and <br />iron oxide staining. <br />8'14 <br />0 <br />23 <br />SPT <br />...(60') - very stiff. <br />Light olive brown (2.5Y 5/3), micaceous, very <br />Very moist. <br />stiff CLAYEY SILTSTONE with very fine SAND <br />8'28 <br />0 <br />22 <br />SPT <br />laminations. <br />Z <br />8'37 <br />0 <br />24 <br />SPT <br />70- <br />...(70') - bioturbation. <br />8:50 <br />0 <br />30 <br />SPT <br />7 <br />Light olive brown (2.5Y 5/3),laminar, <br />Very moist. <br />micaceous, very stiff CLAYEY SILTSTONE/SANDY <br />9'08 <br />0 <br />35 <br />SPT <br />SILTSTONE with moderate magnesium oxide and <br />iron oxide staining. <br />9'20 <br />0 <br />21 <br />SPT <br />9'41 <br />0 <br />17 <br />SPT <br />...(90') -stiff. <br />Notes: <br />1. Total depth of boring 91.5 feet bgs. <br />2. Groundwater first encountered at a depth <br />of 88.6 feet bgs on 10/13/2011; static <br />water level measured at 66.4 feet bgs on <br />10/19/2011. <br />3. Samples collected using an automatic trip <br />hammer. <br />1 <br />4. Temporary well with screen from 70 to 90 <br />feet bgs constructed on 10/13/2011. <br />The dots <br />presented on <br />this log <br />is a simplification of actual conditions encountered and applies only at the location of this boring <br />and at the time at drilling. Subsurtace conditions may litter at other locations and may change wim the passage at time. <br />