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Lqtluirn gas umpling probes were used to monitor, subsur6ce guts at the Ludfill Pi,,,t,. <br />Each probe consim of a 5 -foot long, %4nch diamwr stewess steel pipe, with Y <br />Staggered every 2 inches at the b I ottom fS inches to allow for gases to Ini i�ch bole$ <br />gratt into the Mbts- A <br />pointed tip was W'dded to tL- d of the probe for better peWOo, <br />A ball valve aid b= fiuing w= irtstalled at the top of =h pmbe 'OeontaiD 9AS Pr=urcs and <br />f-'wilitate imstr=<= hook-up to the probet. The valves were left dosed txcept during monitoring <br />or J=Uvment reading. Each probc is tagged with a brass plate and identified -m "Gp-1,, duvugb <br />A GA -90 I, sic r was used to InOnitar raethane, carbon.dioxide. (CO,), <br />and oxYgen (Oz) levels at each probe locadoa. The analyzer was. librat <br />CS td for tnethane, CO_j, and <br />0.1 prior to use in the field- CaRibmtion. logs are.included in this rCPQrL, <br />Gas Monitoring <br />Ambient air mt&v=menu of Metbarw, oxygen, carbon diOxid� and barometic- <br />taken at each gas probe location. These rcadings w<rt recorded and- the jnSM=ent7 V425 <br />�r r # cd to the prob,— Me valve VMS opened aw jtwbe <br />.9= Pressum Measurcments werc taken.. <br />Tbe Probe was d=. puryr "or tM probe Volumm Rcadmgs were then co][Icctod at <br />21iPrOximaWy 30- to 60--s-econd intervals.- untiL.a SMW': Miding WZS ,DbtainCd..- These <br />in"imeroents of Wedme, OxygW. carbon diaxide, and ambient bmmerric pm=! hen <br />rocorded Moaltonng was also oand=ed at vanow locations in <br />thrce building sites for the <br />Prc-Scnce of ruethane gas, Monitoring v.�-js conducted at the offic <br />.e traller, at the enU7anCC to die <br />landfill. tmiler boxes at the Service shop, and twilcr boxes at d,, U..e, building. Tbez, <br />JOCOJjOnS W4erC M0niVUVd for any gas pockets at die foxindation <br />and near artyopening from the <br />A*Or SUCh as piping holesticctrical canduits� or Boor CMIM <br />M� <br />Lysimto wem umpled using the following sta6daW protocol: <br />Prior to satnpling lysiliet=, the pressure-vacuumequipment is chcckedand cleaned. <br />234U949-Fomu0Rm A-12 July 140, 2M <br />CWYttCk M Kkked'dw. IW_ <br />