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Structure Monitoring D. •r Landfill <br />Foothill• <br />Monitoring Date: March 8, 2018 Monitoring Technician: D. Sum <br />* Compliance Level: <br />Methane gas to be less than 1.25 percent by volume. <br />N:\1Foothill\LFG Migration Monitoring\2018\1st Qtr\ <br />FH -1st Qtr LFG Perim Mig Monit 2018 Structures <br />�J <br />Carbon <br />Balance <br />Building and Monitoring Location <br />Methane <br />Dioxide <br />Oxygen <br />Gas Note <br />(% by vol) <br />(% by vol) <br />(% by vol) <br />(% by vol) <br />Maintenance Building (Electrical Conduit) <br />0.0 <br />0.1 <br />20.2 <br />79.7 <br />Maintenance Building (Interior) <br />0.0 <br />0.1 <br />20.3 <br />79.6 <br />Managers Residence (Electrical) <br />0.0 <br />0.1 <br />20.2 <br />79.7 <br />Managers Residence (Interior) <br />0.0 <br />0.1 <br />20.2 <br />79.7 Vacant now <br />Managers Residence Crawl Space <br />0.0 <br />0.1 <br />20.2 <br />79.7 <br />Scalehouse (Electrical Conduit) <br />0.0 <br />0.2 <br />20.3 <br />79.5 <br />Scalehouse (Interior) <br />0.0 <br />0.1 <br />20.4 <br />79.5 <br />* Compliance Level: <br />Methane gas to be less than 1.25 percent by volume. <br />N:\1Foothill\LFG Migration Monitoring\2018\1st Qtr\ <br />FH -1st Qtr LFG Perim Mig Monit 2018 Structures <br />�J <br />