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Sampling Equipment <br />Wed * m gas sampling probes were used to monitor subsmface gases at the landfill perimeter. <br />Each probe consists of a S -foot long, Yi-inch diameter stainless steel pipe, with V <br />inch holes <br />staggered every 2 inches at the bottom I'S iridhes. -to. allow for gases -to migme into the Probes. A <br />pcfttod tip was welded to the en'd of the probe for better penetration. <br />A ball valve and brass fitting We= hLitaffed at the top of each probe to <br />contain gas pressures and <br />facWtUd instrument hook-up to the probe- The valves WeM left closed <br />Cc and identffled as "GP -1 through <br />AGA -90 Landtcc h3fia-red - Ga� Analyzer vnis used to monitor methane, carbon - dio:xide. (CO,), <br />and OxYgen (07) levels at each prob . e locatio.n.'Ibc anafy= was calibrated for methane. <br />Gasmonitoriqg <br />Arribient3irmeasmeinents of mttEme. oxygen, car -bon dioxid� and barom,,:Ujcpr,.t-Vr=,, <br />taken at each gas Pro�e JoCafiorL _MG4�t r=diW W= recorded and- the imstrumentr was <br />�onnected to. the probe. *The valve VVW opcnedwd�zobc.Zasprc=we measurements wem <br />The . was theM PUrged for_ 'Wo. PWbe VOIUMMtaken. <br />Readmigs - w=e then ofiected at <br />;fq=xi:f _Y 30- to 60 -second stable-zeading was obteme&.. These <br />Mr. •� -+rtImts of tnetfiane, mxygen. carbon diaxide, and Smbieat bammetdc S=me w,,e then <br />recorded- MoniWrIng was also conducted at vaious locatiom inbuilding sUm for the <br />Presence of methane. gas. Monhorbg Was conducted at the offite trw-ler at the entrance to the <br />lond= (MilCi boxes' at the service shop. a• d trafler boxes at the w4m-sfe . r building- These <br />lccaeLO2s were m4onitared for any gas pockets at.the'foundation, and near aayopening from the <br />:00or SAKh 23 piping holes, electrical conduits, orfloor crack,, <br />i� <br />1. Prior to sampling lY*Ctm*:s. the pressure -vacuum equipment is checked. and cleaned. <br />234U9*-F0I%2310R= A-12 J* 14, 2000 <br />COMTE& M Khwdda. 6-- <br />