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10 <br /> Woodward-Clyde Cattiall��1t.l: ` <br /> rstrpatmaritso1gasMET=" <br /> �tmir;aied. <br /> i' , . «In selected,. s i d ,- acilit5ie,but <br /> 5.2.2i]S�" u - <br /> so ,a d • ' ,,,Iwale'/1tas been a viable <br /> -alternativernaji-a datrealment utilizes natural <br /> its use at local facilities is 31111 considered <br /> or adsorption, to decoMaminale soil and <br /> processes, such as volatilization, biodegradation, t ific, and its use depends on <br /> groundwater. The applicability of land treatment is site-sPe� <br /> eatment <br /> The <br /> volume of soil and groundwater to be treated and the awoatila gad bfeainr Stockton,`ta <br /> within the immediate area. Since a commercial site is <br /> f aromatic compounds, but the <br /> primary concern is the suitability of the site for land treatment. The ambient weather <br /> P y <br /> conditions at the site are attractive for volaiiiix The <br /> rhes of the soil are not known. The overall site permeability. <br /> attractive. <br /> of <br /> adsorption grope requirements, make the <br /> of conlaminaied soils, and permitting <br /> rea are <br /> Leachate-control liners and groundwater m•,)nitoring aroudoesd not land treatment in addition.addition <br /> f2quired to ensure that cross-contamination <br /> require groundwater and air quality monitoring. <br /> characterization of the microorganisms in the soils is necessary to evaluate the potential <br /> for biodegradation. Land treatment may few <br /> 5.2.3 <br /> c.,o t andf+1 Construction and operation of an on-site landfill offers excavation w <br /> he site by <br /> of <br /> -� it also <br /> advantages. It requires the disturban qua tmonilor ng, and a current use Of tsubstantial area• <br /> soils, increased vehicular traffic, air q y and , and requires long-term <br /> precludes the use of the site as a Caltrans Maintainence y <br /> He <br /> t the <br /> ns <br /> nd <br /> groundwater monitoring. In addition, It may not be possible tlanrdlla Theamedium altoabe <br /> Shop 10 which conforms to all the slung requirements <br /> land <br /> ill <br /> On-s <br /> treated at t <br /> pie Caltrans Shop 1 o '+s both soil and groundwater. c ear'advan of ge loathe`on <br /> applicable to groundwater treatment. Since <br /> there is no e the Caltrans Shop i o, it is not <br /> are not app' <br /> site landfill option and it generally Is not app <br /> considered further- <br /> ing has Proven useful for wastes containing high <br /> ise <br /> ' ns of highly volatile compounds. The method uses heat from the steam compounds 'into <br /> concentrations <br /> limited to applications whore volatile <br /> water temperature and increases mass transfela,ndl�arlttioning of volatile comp <br /> the vapor phase. Steam stripping is generally pounds miscible with <br /> concenlra.ed; comp feasible <br /> compounds have low solubilities and are highly economically <br /> waterare not removed With this treatment. This meth°ene usually <br /> t ngl plant at a refinery). its <br /> only where a source of slniexists <br /> e eluded from further consideration. <br /> use at the Caltrans Shop ios <br /> 24 <br />