Laserfiche WebLink
PERIMETER LFG MIGRATION MONITORING WELL DATA <br /> CORRAL HOLLOW LANDFILL <br /> Date: 3/5/202410:OOAM Monitoring Tech: Ken Espinoza <br /> Weather Conditions Cloudy Gas Testing Apparatus Utilized: GEM 5000 <br /> Ambient Temp: 56°F Barometric Pressure: 30.05 Inches Hg <br /> Wind Direction: NW Wind Speed: 5 MPH <br /> Weather: <br /> Carbon Pressure <br /> Methane Dioxide 02 Balance (Inches <br /> Name (%by vol) (%by vol) (%by vol) (% by vol) W.C.) Comments <br /> GW-1D 0.0 0.1 20.6 79.3 -0.040 <br /> GW-1M 0.0 2.1 18.9 79.0 -0.040 <br /> GW-1S 0.0 0.1 20.4 79.5 -0.050 <br /> GW-2D 0.0 1.8 17.5 80.7 0.150 <br /> GW-2M 0.0 0.6 19.3 80.1 0.150 <br /> GW-2S 0.0 0.4 20.0 79.6 0.030 <br /> GW-3D 0.0 1.0 20.1 78.9 0.140 <br /> GW-3M 0.0 0.7 20.0 79.3 0.140 <br /> GW-3S 0.0 0.4 19.5 80.1 0.050 <br /> GW-4D 0.0 0.1 20.7 79.2 -0.300 <br /> GW-41VI 0.0 0.3 18.3 81.4 0.370 <br /> GW-4S 0.0 0.2 19.9 79.9 -6.950 <br /> GW-5D 0.0 1.3 15.9 82.8 0.200 <br /> GW-5M 0.0 1.2 19.6 79.2 0.040 <br /> GW-5S 0.0 1.1 19.6 79.3 0.050 <br /> GW-6D 0.0 5.5 13.9 80.6 -0.080 <br /> GW-6M 0.0 4.2 16.3 79.5 0.310 <br /> GW-6S 0.0 1.4 19.1 79.5 -1.340 <br /> GW-7M 0.0 0.6 20.3 79.1 0.030 <br /> GW-7S 0.0 0.8 19.0 80.2 -0.040 <br /> GW-8D 0.0 0.1 21.0 78.9 -0.960 <br /> GW-91) 0.0 1.0 20.4 78.6 0.100 <br /> GW-9M 0.0 5.6 14.8 79.6 0.030 <br /> GW-9S 0.0 0.4 20.7 78.9 0.030 <br /> GAS TESTING INSTRUMENTATION AND METHODS <br /> Testing for methane gas, oxygen gas, carbon dioxide gas and pressure was performed using a Landtec GEM-5000 <br /> Gas Analyzer calibrated to methane gas.This instrument measures combustible gas concentrations in air directly <br /> on either of two scales,the first as percent by volume of the lower explosive limit (LEL) of methane gas in air(0 to <br /> 5 percent);the other as percent by volume (0 to 100 percent) in the gas sampled.The detection limit for this <br /> instrument is approximately 0.10 percent by volume. <br /> Gas monitoring well testing procedures are as follows: <br /> • Connect sample tubing,open test valve, observe pressure,and record data. <br /> • For probes 20 feet deep or less,turn on sample pump, observe and record methane,oxygen, and carbon dioxide <br /> gas concentrations,when readings have stabilized for 30 seconds. <br /> • For probes more than 20 feet deep,turn on sample pump, extract a minimum of one probe volume, observed <br /> and record methane,oxygen, and carbon dioxide gas concentrations,when readings have stabilized for 30 <br /> seconds. <br /> • Close test valve, disconnect sample instruments and secure sample location. <br /> N:\1Corral Hollow\LFG Migration Monitoring\Perim Monitodng\2024\CH_Perim LFG Mig Monit 1st Qtr 2024.xls Revised 10-24-11 <br />