Laserfiche WebLink
i <br /> Former Manna Pro Site Page 13 <br /> Project No 207 3 <br />' Remedial Feasibility Study <br /> • <br />' 8.4 CONCEPTUAL REMEDIAL MODEL <br /> Pilot testing has provided information regarding appropriate spacing between vapor <br />' extraction wells and sparge wells Based on these data, and in conjunction with other data <br /> regarding the distribution of gasoline range hydrocarbons in the sub-surface, it is possible to <br /> generate a preliminary design layout of the final remedial system The conceptual lay-out is <br />' attached as Figure 3 <br /> Due to the uncertainty regarding the rate at which air sparging will liberate free, vapor-phase <br />' hydrocarbons to the surface of groundwater, we propose to construct the remedial system to <br /> two steps Initially, two sparge and one vapor extraction well will be operated for a period of <br />' up to several months so that additional data may be obtained regarding the rate at which <br /> gasoline can be extracted, and also to reveal any additional engineering problems which may <br /> be inherent at this site After the initial phase remedial system has been shown to operate in <br />' an efficient manner, any needed design adjustments can be made prior to full-scale <br /> implementation After these first few months of operation and evaluation, the system may be <br /> expanded to its final configuration with confidence <br /> I <br /> I <br /> 1 <br /> I <br /> • <br />' 2937 Veneman Ave ,#13240 Geo-Phase Environmental Inc Phone (209)569-0293 <br /> Modesto, CA 95356 Fax(209)569-0295 <br /> 1 <br />