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Sampling Equipn=t <br />Interim gas$=Piing probes were used to monitor substafice gases at the landful <br />Each probe consists Of a 5 -foot to V Pi 'l,-anla . <br />holes <br />StR88cred every 2 incles at the bottom jS inches -to allow for gam to Migme intothe <br />probes. A <br />pointed tip was wt1ded to the end of tlte probe for better p=tratjom <br />ball valve amfi.+were _ at the <br />t' ♦ r r� rrt# r <br />r � r # �✓� r� s r t tr •«: '� _ s r .r r, r <br />GA -90 Landtcc i t s used toM*Wtermethane,carbon. <br />.s t r r r a r <br />r 40XYgtnprobe ! s. : <br />02 PdOr tofield- Claltibration, top are.included <br />Gas monitoring <br />Ambient Mt2SUr=CntS of tt t. t t carbon a s t• and t, i ri t <br />pressure VVCM <br />taken at each PS wobe location.t• ,ra r>Were # t <br />and- the insovmmtr Was <br />�OnMCCzed to the probe 1 was op*cned aWr.robe.Mpre=rre <br />Y ## C' # ai=t.. #�, " K f; Wit: <br />The <br />probe r then, i .I » s,i i " t probe s :tt * » t <br />asit s.rrs =l t< fidcrnls..tits <br />Me"summentsOf Medme,t +r# c;arbort 4fioxklf,and .#i tt bammetric pressure <br />recorded'. ModWring i;# r `o# om&tcted at v=iousi# 3a 2 du='building sites for the <br />Pre"tence <br />of <br />t gas.r 4 ! rg was'cond=ed <br />at <br />te Offict trailer <br />at the «rr ,r to the <br />= r boxes- r <br />the t oand tratler boxes t transfer building. <br />,locations Were mojait=d forany gas pockets i%# r :, t r# 'and <br />r,a.: at styr+ front r, <br />Y:.• i #piping K.. N ,w, electrical w t r s -floor cracks. <br />LYSOAETERS <br />LYSimctcis were sampled using the followin sta6dard protocol: <br />L icor to =mpling, lysitneters,pr='=-vacuum eqWptnent is checked d cleaned- <br />Z-MU940MUORM14,2 ... <br />