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SUBSURFACE GAS CONDITION BELOW STRUCTURE FOUNDATIONS MONITORING <br /> 2nd Quarter 2013 <br /> Harney Lane Landfill <br /> Date: 04/18/2013 By: B Closs <br /> Ambient Baro <br /> Temp Press General Wind Wind <br /> (deg F) (in -Hg) Weather Speed (MPH) Direction <br /> 70 30.24 Sunny,Clear 0 Calm <br /> Carbon <br /> Methane Dioxide 02 Balance <br /> Location (% by vol) (% by vol) (% by vol) (% by vol) <br /> Structure Foundation 1 <br /> (Northern-most structure) 0.0 0.8 18.3 80.9 <br /> Structure Foundation 2 0.0 0.2 19.1 80.7 <br /> Structure Foundation 3 0.0 0.2 19.1 80.7 <br /> Structure Foundation 4 0.0 0.1 19.3 80.6 <br /> Structure Foundation 5 0.0 0.2 19.2 80.6 <br /> Structure Foundation 6 0.0 0.9 18.6 80.5 <br /> Structure Foundation 7 0.0 0.9 18.6 80.5 <br /> Structure Foundation 8 0.0 0.3 19.0 80.2 <br /> Structure Foundation 9 0.0 0.3 19.0 80.7 <br /> Structure Foundation 10 0.0 0.3 19.1 80.6 <br /> Structure Foundation 11 0.0 0.2 19.2 80.6 <br /> Structure Foundation 12 0.0 1.6 17.2 81.2 <br /> Structure Foundation 13 <br /> (Southern-most structure) 0.0 1.4 18.3 80.3 <br /> Note: these data represent the conditions in the aggregate base beneath the structural foundation slab of <br /> these strurcures, measured through a tube inserted to the aggregate base through a vertical vent that <br /> extends from below the slab through the building roof. These data do not represent the conditions in the <br /> occupied area of the structure above the slab. <br /> N:\1 Harney Lane\LFG Migration Monit\Repts 2013\2nd Qtr\ <br /> HL 2nd Qtr 2013 Structure Monit Dataa.xis Printed 4/18/2013 <br />