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PI PH VC IV.APPLICABLE STANDARDS/RISK DETERMINATION71o <br /> + A list and map defining all source areas,areas <br /> contamination or contaminant discharge areas. Phase <br /> assessments do not always show source areas. The V <br /> Clean-up Program requires that these areas be defined <br /> indicate the proximity of contaminant with respect to receptors <br /> and sampling efforts. <br /> + A discussion of contaminant mobilities,including 16 <br /> estimates of contaminants to be transported by wind, <br /> volatilization,or dissolution in water. For those contaminants <br /> that are determined to be mobile and have the potential to <br /> migrate and contaminate the underlying ground water <br /> resources,the applicant should also evaluate the leach <br /> ability/mobility of the contaminants.This evaluation should <br /> consider,but not be limited to the following: <br /> leachability/mobility of the contamination,health-based ground i <br /> water standards for the contamination;geological <br /> characteristics of the vadose zone that would enhance or <br /> restrict contaminant migration to ground water,including but <br /> not limited to grain size,fractures and carbon content; and <br /> depth to ground water.This evaluation, and any supporting <br /> documentation,should be included in the plan submitted.A <br /> Phase 11 assessment usually does not include a risk <br /> determination. However,the Voluntary Clean-up Program will <br /> evaluate the risk involved with the proposed clean-up in order <br /> to evaluate the application. i <br /> + The applicant should then provide,using the information contained in 27 <br /> the application,a risk-based analysis of all exposure pathways,which <br /> details how the proposed remediation will obtain acceptable risk levels. <br /> A Phase 11 assessment usually does not include a risk analysis, <br /> however,the Voluntary Clean-up Program requires this analysis to show <br /> that the remediation proposed will attain an acceptable risk or break <br /> pathways. <br /> + The Voluntary Clean-up Program includes remediation whereas a Phase 23 <br /> 1 or Il assessment does not. Usually remediation is considered a Phase <br /> Ill assessment.The following are the requirements for the clean-up <br /> proposal. <br /> + A detailed description of the remediation alternative, or 23 <br /> aftematives selected,which will be used to remove or stabilize <br /> contamination released into the environment or threatened to be <br /> released into the environment. <br /> + A map identifying areas to be remediated, the area where Fig. 3 <br /> the remediation system will be located if it differs from the <br /> contaminated areas,the locations of confirmation samples,the <br /> locations of monitoring wefts,areas where contaminated media <br /> will temporarily be stores/staged and areas where contamination <br /> wilt not be remedaated. <br /> IXURoyal roger VCUP Appfication�� Page 7-of 33 <br />