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�IUN"25 '96 X11=22AM jSMITH"ENVIRONMENTAL TECH CORP h ��w��� P.8 <br /> �� ut - <br /> �;�� .�,�� IMMZ-vacuumNolum�*sem -Operation <br /> Follovath;s� --l���gt�rn <br /> stems afGtrprolr rods have b09n driven to sampling depth W Wog dable of <br /> muactZ16 gointhas been ft=&*or alber PKTtubir4 has bare attached <br /> 1.Turndle,vuunz i <br /> F�P�anda�vrarunZtobuild in tisev�tsumtarak.Malresure <br /> that.tba lips calve is closed triose AU n9 ttr=,par %%The uuidescah cf the vacuUm r; <br /> suge is afibrated in inches H&no outside scale is calibrated for voh=o.in liters(at <br /> stae rd tr'rrrperaturearid prvssum).Pr rnp the tank down tothadeAmd va=um and <br /> tumtheavit&op. <br /> = m r <br /> L 1 ttA elle v=crfn h=to tb*-tap of th--soil vapor swnpliW trait o_p tp,gWplk4CV - <br /> Oat tvp of probe Fads or to Mtuh4v. � <br /> 3 :Opett the Fine eotuml value. Ifma plind&=6h probe rods,eWAMM 100 ml O(VOLUZ= Vacuum gauge atut ated la <br /> for err.�1 radi t:s2d. Some p tpcoly'[ y call for a rr»rtimttun of par s�ltrrrres to be Inches Rg and volume lzi tire. <br /> e eecr ed b*m sarnplind(ice.9 teat dcpkh-3 redox 100 ml r.3=900 MO.If going pRT <br /> tatb'd&0=abtbsrpArolWAM velum--to P>&the ambient air in am system.You <br /> WOW 4="Eo PUMP a aWWUd valUrM at each sample 1=tion. ��- <br /> d,."After ach9 suffu�iaat ptrr vol <br /> MMe,oiler+do=the line valve and allow sample <br /> line Ws*m tp return to zero(01.'ibis returns'the sampling train tO atma 9heric <br /> prersuto.As sample can be callected at this time. <br /> pie <br /> VthsA�an the HAc 8=90 doss M refty,to atmospheric pressurc:fkertim lineva= <br /> web >s saturated or that the = ,it may indicata that the siril at the <br /> also lndirate that rhe Pere is too tight to yield a sample. It could <br /> sampling train is plumed. ' <br /> If tlt^.=-dXe Booms bark to feria C=trul P=,d V-ith one contrsi v and tic= dr <br /> =74'uicklY,itindicates UW the soil at tete prosaurc gauge, <br /> depth isvary Esneable or that there is a leak in tett.sampling train.You can cMctx far <br /> lei by ko�n cut the=WW bWn and plc lA9 tete&smpling UW With a rubber <br /> 1'DF9;�Md apply*a uzcuurrt tp it You may want to do this b:fbms2=,plin& <br /> tel$01MBdl5 the nwAle rnWeturn to mm v.ry ft,*Once tteevalvoe line is shut.7°he = <br /> dip.:it tabes fdr the neddia to return to cm is empod the-mcoererY'thm. R should be <br /> not A far each p-nvla takaem This iaforrtratWn,will allow rcla&c comparbar,ofsail o <br /> D-�t�ili�+.Recovery n mos meter than 10 rufnutes r,1�ou1d lxi caOsidered a�ts� r _ = f r <br /> 'the M74t.'afany lei in the samplingaystersr is increased with longer recovmy times. <br /> ,Alar 10 rrrinuta,the OlMatr rstiavlrf consider either cliaortg the samp2i g dep%, e' <br /> lorwoo,lergm of Pullbacisfrom the sampling tip,or switching entirely from soil gas <br /> aarr+wing to grab manpungand arraiyafs ofscil. <br /> l�VtPi±Yaroucn Puixp and'rank. <br />