Laserfiche WebLink
�3.0 September 2005 :_ w :. <br /> µ- 'AGE-NC Project No.-97 0343':".-- --. -,.._ <br /> Page 5 of b <br /> =REMEDIATION SYSTEM PIPING_ NETWORK <br /> - - A,network•of two-inch diameter;.-schedule r80 PVC piping will be installed from the remediation , <br /> wells in a series of trenches;approximately 1`84rich wide acrd l&orches deep:All PVC piping will <br /> be .routed underground from'each remediation well head tolhe SV.E water entrapment,located inside <br /> the remediation system fenced enclosure.-A PVC ball valve wi-Ifbe installed at each,SVE well_liead , r <br /> _:. so that vapors'eari_be&awn frorrr_each welIindepeindentl 'or frorii'a-combination of specific wells` <br /> -Following piping placement;the`trench will be backf sled with�imported road-base sand,compacted- <br /> and covered.with resurfaced with'asphalt: A=Cut'view drawing:.of the process piping layout is <br /> r :included in Figure 3. •= ; <br /> -3.3..' ' SOIL,VAPOR EXTRACTIONSYSTEM DESIGN = w: <br /> .: AGE proposes to initiate operation of an SVE system in the core area of.the p tioleurn hyf drocarbon <br /> 4-s <br /> impactcd area.The SVE system will-,corisist of-utilizing--three e3cisting,SVE.w6lls and three existin <br /> monitoring wells-VW-1., VW=2,`VW=3,�IvIW L M�?V-2-and MW 3, well_locations ar`e depicted in ��:1 A <br /> Figure 2. = ,_ _ - 4 .. <br /> — _ - � - >.. J f . _ _ _ _ -r„ "mss • wT _ _ .. - -'.� . <br /> _ . A carbons SVE is-.proposed.for use. <br /> se for hydrocarbon vapor-recovery-at 1he�-site. The extracted <br /> -hydrocarbon vapors-will be extracted from.-the"proposed corif guration-of extinction wells,'routed- _ <br /> througha 55-gallon steel vapor condensation entrapment ehartiber,�and than routed to the inlet of a <br /> y vacuum blower.; the oiltlet frol--fhe:vacuuln blower will be routed through the carbons;vessels.'A' <br /> .4 diagram of atypical system is illustrated iri Figure 4.The SVE-will-be connected through a manifold - <br /> box to the vapor recovery wells and should be able to operate,between 125.and,4 50 CFM: The-SVE <br /> system will be outfitted with a`carbons vessels to provide an cost-effective adsorption ratio,to:reduce - <br /> .-concentrations of hydrocar. vapor priorao discharge. <br /> Induced vacuunineasurements will be collected utilizing a Magnehelic vacuumfgauge?attached near a � <br /> 'the inlet of the blower; SVE+air�flow_-will be,,monitored--using a Dwyer DS-200!flow. sensor. <br /> = Following the start-up period,."the:SVE air'-.flow along''the-influent:and -effluent-lines will-be <br /> `monitored weekly for the presence of�or ariic'va or using.'an'.or an-ic 'va or-anal zef- OVA <br /> y . , P - g p g- p Ys ), <br /> s equipped with a;photo-ionization detector(PID::Thermo Environmental 580b;_10.0 eV;calibrated <br /> to isobutylene).Sampling ports_will be installed upstream ofthewacuum blowerinlet to recover SVE <br /> influent air'flow-vapor stream samples;°and downstream of-the carbons vessel's_to adsorb"effluent <br /> SVE air flow'samples to monitor the efficiency of hydrocarbon recovery <br /> '+.E <br /> `- Advanced GeoEnviroamental,Inc <br /> b t - - - f -, - "F`' � .i-' =L.a '_..Z u' x�`•r .Y' '2N+.rl-� y - � - <br />.. -t - - - _ :�.- - .....t mak. �..- -- -. _ .-- ••h, Y ,4 <br />