Laserfiche WebLink
IBM <br /> k <br /> S <br /> AlEcrnative 11.5--Grondv'raler Ext Itc1r41i c1it CO�tI`IlldlWaler,i Ail'Slrp{tssing:u it,�throught.ls; <br /> GAC. This rttethod involves extract g <br /> The treated effluent <br /> g,i5oline/water separator, and, a series of two air stripping towers. <br /> - ods. will be routed through a vapor phase GAG system. i'lte systcln <br /> would be reinjected into the aquifer. 'l'lle air emissions froltt the air strippers, with tile <br /> volatilized l3'1'X compounds. <br /> would operate for about 2 years. <br /> Rcconttnendefl Alternative <br /> Alternative A3J113 is the recotttntended remediation process. The soil remediation <br /> or <br /> C adsorpt <br /> -. system will consist of an insitu soil aerattid'�tiottstymteRnlwill consist�of all extraction oWellf <br /> the air emissions. The groundwater rem Y <br /> air stripping system, turd reinjection well. Tire air emissions from the air stripping system <br /> _ will be routed through the vapor phase GAC filter system. <br /> The air pump will induce a <br /> insitu Soil Aeration System. The insitu sail aeration system will consist of three air <br /> intake wells, an air outlet well, and an air vacuum pump. <br /> air 01 <br /> vacuum in the soil matrix between the air intake wells fro d the air t`mtakellvvellshto induced he a <br /> vacuum will cause air to flow through the soil ma compounds In the soil maga to <br /> on <br /> outlet well The airflow win cause the liquid phase BTX <br /> volatilize into the airstream as vapor phase <br /> hnds and the princ pies of diffusion.'Me volatilization of . Tile lairflow will <br /> F, the vapor pressure of the BTX compou p base GAC filter. A plan and <br /> be collected in the air outlet well and routed to the vapor p <br /> profile schematic of the insitu soil aeration system is shown on Figure 2• rate will be <br /> ing <br /> ' ~l Extraction Well and Reinjection Well System. The extraction�e �e aquifer. The <br /> such that its zone of influence will encompass the entire BTX plume <br /> modeling. In <br /> 4 zone o€ influence will be determined by a pump test and groundwater <br /> addition,the influence of Municipal Well l2 on the local geohydrology will be modeled. <br /> groundwater back to the aquifer. A <br /> The reinjection well will discharge the treated gll, groundwater reinjection well, and soil <br /> profile schematic of the groundwater extraction we <br /> f �» aeration wells is shown on Figure 3. <br /> s <br /> Groundwater and Air Emission Treatment System. The groundwater treatment system <br /> two air stripping columns in series. <br /> will consist of a gasoline/water sept{rator followed by <br /> s The treated groundwater will be discharged f from tho the aquifer oil a ratitonr system,nwillfl be routed <br /> emissions, along with the air emissions <br /> l through h�o vapor phase GAC units in series. The air emissions from AC unar►d its will <br /> air <br /> be vented to the atmosphere. A conceptual plan view of the groundwater <br /> E treatment system is shown on Figure 4. A plan view schematic of the extraction well, <br /> Y groundwater/air <br /> treatment system is overlaid on <br /> Erehtjection well, soil aeration system, and g <br /> tOri a project site map on Figure 5. <br /> liiol{tgical ()xidation of Air Emisssions: �Q�containing air emissionsBC are currently <br /> l€developing the <br /> treatment system capable of biologically oxid g the biofiiter m the treatment process <br /> system development i:, successful, we propose using laced before the vapor phase GAC <br /> --------at--ARCQ_Station 4'4. The biofilter would be p <br /> - <br /> p --- - --- ---- <br /> ' adsorption units. The locauon o€ rite biofilter in <br /> process is shown o <br /> Figure 5. <br />