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Working To Restore Nature <br /> ingestion or dermal exposure to impacted soil or groundwater would be minimal <br /> during well monitoring or destruction activities but is otherwise nonexistent. <br /> O Criterion b: <br /> The long term effectiveness of this alternative is ultimately good. This alternative <br /> would reduce the toxicity and volume of the contaminants in the soil by natural <br /> ' biodegradation, but the rate of reduction is not known. <br /> ' O Criterion 7. <br /> Of all the alternatives the passive remediation approach is the easiest to implement <br /> ' The required monitoring wells are already in place and accessible for monitoring <br /> ' O Criterion 8. <br /> Since minimal activity would be conducted at the site, the impact on the community <br /> would be very minor and not disruptive to the businesses located on the site and <br /> nearby. However, regulatory agencies may be hesitant to approve this alternative <br /> due to the long term duration of this alternative. <br /> ' &2 Alternative 2 - Soil VapQr Extraction with Groundwater Extraction <br /> ' O Criterion 1 <br /> This alternative has minimal health-based risks. Petroleum hydrocarbons are <br /> ' removed from extracted vapor and groundwater prior to release/discharge <br /> minimizing the risk of exposure to humans The potential fire or explosion hazard <br /> ' would be minimized with a properly designed system and regularly scheduled <br /> monitoring and maintenance. <br /> 1 <br /> 1_%M8utrr0xTSXC"-07%DRF 19 <br /> 1 <br />