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Dec-5-00 17:05; Page 3/6 <br /> 1 . . 1 <br /> N The Post-Run Tubing System <br /> C1 I"he Post-Run Tubing SystcTn(ITS)allows rhe user to collect soil vapor samples quickly and <br /> !!= usily at the desired sampling depth Wfl'HOUT the time-consuming complications associaced <br /> -0 with rod leakage and contamination. O-ring conncedons enable the PRT syscuu to deliver a <br /> I` vacuum-eight seal that prevents sample contanunatiun from U13 hole,and assures that the sample <br /> C is taken from clic desired depth at the BOTTOM of the <br /> hole. The sample is drawn chrough the point holder, <br /> through the adapter,and into the sample tubing. The <br /> N cubing can he replaced after each sample,thus <br /> d• eiiminacing,sample csrryaver problems and rheneed to �- :: :....e•a., <br /> dccontaminaw the probe:rods. Tlrc resulting rime- <br /> savurgs translates into a hibrher productivity race for you '+•' =t '�:.: i:b <br /> and your Client. <br /> Sampling Methods : ' <br /> Some of the.more common nicdwds of active soil.8;" 4 <br /> sample collcctioninclude: F <br /> Direct santpliug from the PRT using a bat ; <br /> chromarograph-comparible syringe turd when the <br /> Geopcobe ran is equipped with d mobile Using the post-RunTubing(PRT)system for sal <br /> Laboratory and gas chromatograph for immediate vapor sampling <br /> analysis of the wUccted samples. ._F <br /> • Inline sampling using glass sampling bulbs or <br /> Ttcllar bags. The sampling device is plac.od inline,berwcen the PRT adapter and chc <br /> vacuum/volume•system. As the sampling system is purged,Buil bis is trapped in the btilb ur <br /> bag,. Thcst;samples may be stored for limited periods of time and either analyzed on site or <br /> ar an off-site laboracory, <br /> • Summa cannistecs,pre-evacuated steel devices that are connected-rb lite surface end to the <br /> PRT tubing,also provide anodier sampling option for soil bas.'A'valve on the canister is <br /> opened and clic vacuum inside chc canister pulls in soil ga_m from the sample interval. This <br /> system is expensive and i.c ttsually reserved for sending Qmples to an off-site laboratory ror <br /> ArImAized analyses or quality control purposes. );•' <br /> FIEI QUESTION.. . <br /> aril <br /> Q. Is it possible to use a rcuacrablc lx,int rill?the PRT A vols section of the M System showing how <br /> mil gas(crows)is drawn through the inner <br /> system. <br /> tzthing system. <br /> A. Yal You umid recd rr Rerracurblr Pauli(AT1l BJ raid?a <br /> r�r t� � PKI'k«nurable f'ui.rt Holder(I Rl1B). (Sreprrgr 3.J <br /> Fs?�7•a <br /> $VIA <br />