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A S S 0 C I A T E S I N C <br /> I' <br /> O Criterion 8: <br /> ' Since construction activities are already occurring in the vicinity of the site, the additional <br /> impact on the community would be very minor and not disruptive to the businesses located <br /> near the site. However, regulatory agencies may be hesitant to approve this alternative due to <br /> ' the long term duration of the project and uncertainty to meet cleanup goals. <br /> 8�2 Alternative 2 - Groundwater Extraction and Soil Excavation <br /> O Criterion 1: <br /> This remediation alternative has immediate health based risks. Construction activities are <br /> ' occurring at the site so the possibility for exposure to humans by inhalation, ingestion or dermal <br /> contact with impacted groundwater is considerable. If a substantial volume of groundwater is <br /> ' removed from the excavation prior to and during construction activities, these risks may be <br /> reduced. <br /> O Criterion 2: <br /> This alternative would immediately reduce the volume and concentration of petroleum <br /> hydrocarbons in the groundwater. It would also substantially reduce the potential for migration <br /> or conveyance of impacted groundwater off site. Excavation would effectively reduce the <br /> volume and concentrations of any additional impacted soil encountered at the site, and would <br /> ' eliminate the potential for further impacts on groundwater at the site. <br /> O Criterion 3: <br /> ' This alternative can be implemented within regulatory guidelines. <br /> ' O Criterion 4: <br /> This alternative is comparable in cost to the first alternative. This alternative has costs <br /> ' associated with extraction, transport and disposal of impacted groundwater. The cost of this <br /> remediation alternative is estimated to be between$28,000 and$50,000. <br /> O Criterion 5: <br /> The alternative would be effective in the short term because it results in the direct removal of <br /> the impacted groundwater and soil. Extraction and excavation would increase health-based <br /> 1' risks to humans via exposure to the impacted groundwater and soil during site activities. The <br /> time required to complete this alternative would be less than 2 months. <br /> ' O Criterion 6: <br /> The long term effectiveness would be considerable if the entire volume of impacted <br /> groundwater is removed from the site, preventing any possibility of migration of groundwater. <br /> w:182254�sunupt.dm 9 <br />