Laserfiche WebLink
INTERIM REMEDIATION PLAN <br /> Insitu Soil Vapor Extraction System <br /> Ultramar Service Station No. 492 <br /> 470 North Main Street <br /> Manteca, California <br /> k <br /> 5 February 1992 <br /> E <br /> INTRODUCTION <br /> EVAX Technologies, Inc. (EVAX) has been retained by Ultramar Inc. <br /> (Ultramar) to operate an insitu soil vapor extraction system (VES) at <br /> Ultramar Station No. 492 located at 470 North Main Street in Manteca. <br /> This document describes the Interim Remediation Plan for this site <br /> i including the site conditions, prior remediation, the YES feasibility <br /> study, system design and risk assessment. A catalytic incinerator will <br /> be used for abatement of the extracted soil vapors. <br /> A VES was previously installed and operated at this site by EVAX <br /> i Technologies during the Fall of 1989. Consequently, the prior <br /> construction of the system is beyond the scope of the present interim <br /> remediation plan. The present plan basically involves the installation <br /> of a 100 standard cubic foot per minute (scfm) catalytic incinerator for <br /> economical long-term destruction of extracted gasoline vapors. <br /> PRINCIPLE OF OPERATION <br /> Soil vapor extraction involves the removal of volatile organic compounds <br /> from subsurface soils by mechanically inducing air flow through the soil <br /> matrix. This is accomplished by applying a vacuum to extraction wells <br /> located in the plume. This insitu (in-place) approach to soil <br /> remediation does not require excavation thereby avoiding large fugitive <br /> emissions commonly associated with excavation and stockpiling activities. <br /> r <br /> s <br /> SITE DESCRIPTION <br /> The subject site is an operating Ultramar Service Station located at the <br /> corner of North Main and Alameda Streets in Manteca. The site is shown <br /> in Figure 1 of Appendix A. Extensive environmental work has been <br /> conducted at this site. The work has included the drilling of soil <br /> i <br /> r <br />