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SUBSURFACE GAS CONDITION BELOW STRUCTURE FOUNDATIONS <br />ITHONITORING <br />Quarter <br />Date: 08/25/2013 By: D. Gambini / M. Carroll <br />Ambient <br />Baro <br />02 <br />(% by vol) <br />Temp <br />Press General <br />Wind Wind <br />(deg F) <br />(in -Hg) Weather <br />Speed (MPH) Direction <br />71 <br />29.89 Sunny, Clear <br />7 SE <br />Location <br />Methane <br />(% by vol) <br />Carbon <br />Dioxide <br />(% by vol) <br />02 <br />(% by vol) <br />Balance <br />(% by vol) <br />Structure Foundation 1 <br />(Northern -most structure) <br />0.0 <br />2.9 <br />18.3 <br />78.8 <br />Structure Foundation 2 <br />0.0 <br />1.1 <br />19.5 <br />79.4 <br />Structure Foundation 3 <br />0.0 <br />0.7 <br />20.1 <br />79.2 <br />Structure Foundation 4 <br />0.0 <br />0.5 <br />20.2 <br />79.3 <br />Structure Foundation 5 <br />0.0 <br />0.3 <br />20.4 <br />79.3 <br />Structure Foundation 6 <br />0.0 <br />5.8 <br />13.6 <br />80.6 <br />Structure Foundation 7 <br />0.0 <br />1.8 <br />18.8 <br />79.4 <br />Structure Foundation 8 <br />0.0 <br />0.7 <br />19.9 <br />79.4 <br />Structure Foundation 9 <br />0.0 <br />0.8 <br />19.9 <br />79.3 <br />Structure Foundation 10 <br />0.0 <br />2.1 <br />18.0 <br />79.9 <br />Structure Foundation 11 <br />0.0 <br />0.4 <br />20.0 <br />79.6 <br />Structure Foundation 12 <br />0.0 <br />3.1 <br />16.5 <br />80.4 <br />Structure Foundation 13 <br />(Southern -most structure) <br />0.0 <br />1.5 <br />19.5 <br />79.0 <br />Note: these data represent the conditions in the aggregate base beneath the structural foundation slab <br />of 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 />NAI Harney Lane\LFG Miigration Monitoring\Repts 2014\3rd Qtr\ <br />HL -3rd Qtr 2014 Structure Monit Data Printed 8/25/2014 <br />