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IIS February 1997 <br /> AGE-NC Project No 95-0104 <br />' Page 22 of 22 <br />' the proposed SVE system <br /> Air should be supplied to IAS points via underground piping from an IAS unit capable of <br />' approximately 10 to 15 psi at a rate of 2 to 4 scfm <br /> • Based upon the relatively low concentrations of hydrocarbons in ground water at the site, an <br /> estimated treatment period of 12 to 24 months should be sufficient to reduce concentrations <br /> Ito at or near State of California drinking water standar ds <br /> • A Remedial Action Work Plan detailing the proposed installation and operation of the IAS <br /> I system should be prepared This work plan should include the installation of sparging points <br /> and extraction wells <br /> 90 LIMITATIONS <br /> Our professional services were performed using that degree of care and skill ordinarily exercised by <br /> environmental consultants practicing in this or similar localities The findings were based upon <br /> I • analytical results provided by an independent laboratory Evaluations of the geologic/hydrogeologic <br /> conditions at the site for the purpose of this investigation are made from a limited number of available <br /> data points (i e monitoring wells, soil borings) and subsurface conditions may vary away from these <br /> I data points No other warranty, expressed or implied, is made as to the professional recommendations <br /> contained in, this report <br /> I <br /> I <br />