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° Sampling.equipment <br /> interimg as <br /> sampliag probes were used to monitor ser <br /> gases at the landfill . <br /> Each probe consists of a 5-foot long, Y2-inch diameter stainless steel I ' + rimeter; <br /> Staggered every2 inches at the bottom 18 incites-to allow for gascs'to migrateP 1, inch <br /> holes <br /> into the probes. A <br /> pointod tip was welded to the end of the probe for betterpenettaadon. <br /> A ball valve and brass fitting were installed at the to of each robe to contain <br /> p p gas Pressures and <br /> "tate instrument hook-up tci the probe.The valves were Left closed dXcept d - <br /> monitoring <br /> or instrument reading.Each probe is tagged with-a brass plate and identified as "GP-1" thr»ugh <br /> "GP-1f3"_ <br /> AGA-90 Landtec .Infranrcd•Gas Analyzer was used to monitor,methane, <br /> .dioxide.(Co.), <br /> and oxygen(02)Ievels at each probe location.The analyzer was c�'bnIed for methane,COA,and <br /> 02 prior to use in the field_Calibration.logs are.includedin thisrcporL <br /> Gas Monitoring - <br /> Ambient air measurements of methane, oxygen, carbon dioxt - <br /> de; and baromettic pressure were <br /> taken at each gas probe Iacatiorz ?host readings were recorded and the fiLst <br /> rumcnt- was <br /> ectad to-the probe. ?Izc valve was opened and probe-gas pressure moments weer taken._ <br /> The .probe was them purged for two. probe volumes. .Readings•were then 4doffected at <br /> y 30- to60-second int , untd._a. stable-reading was .obtainQd.• These <br /> meastn=Vents of madmne, oxygen, carbon dioxide,and ambitat .were d= <br /> barometric - <br /> recordcd. Monitoring was also conducted at various locations in ing three buil . _ <br /> dsites for the - <br /> preStnce of methane gas. Monitoring was conducted at the office trauer at theentrance to t}ie <br /> landfill, trailer boxesat the service shop, and trafler boxes at the met building. These <br /> locations were monitored for nay gas pockets at the foundation and near any opening from the <br /> :floor such as Piping holes,electrical conduits,or door cracks. <br /> LYS <br /> Lysime-ters were sampled using the following sta6dard protocol: - <br /> 1- Prior to sampling ly.mmetcrs,the pressure-vacuum equipment is checked.'and cleaned. <br /> 8491-FO 1\23IOR323 A•12 <br /> 2pgp .mC. Iuly 14,2000 <br />