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C-SHADRIFS91.6/G WPP-H.1 <br /> 01/13/92 <br /> EVALUATION OF ALTERNATWES <br /> AITF,RNATIVFS - OPTIONAL COMPONENTS <br /> Criteria 1 2 <br /> 3 4 5 <br /> A B <br /> Short-Term Achieve cleanup levels. In short term,cannot assume complete community protection; in Does not achieve Do not remediate arsenic from aquifer, • <br /> Effectiveness risks to workers onsite cleanup levels recovered groundwater will meet arsenic <br /> cleanup level <br /> Long-Term Reduce VOC levels, permanent and reliable technologies Same as Not a long-term Reduces arsenic in groundwater to allow <br /> Effectiveness and Alte7, nves ]3 but remedy y beneficial uses <br /> not as reliable <br /> Reduction in Permanent,significant VOC TMV reduction; Permanent, <br /> ToxicityPermanent, No TMV reduction Removes arsenic,residual requires offsite <br /> Volume mMobility,or residual requires offsite management significant TMV significant VOC TMV <br /> V (TMV) management <br /> reduction;no reduction; residual <br /> residual requires offsite <br /> Go <br /> management <br /> Implementability No limitations No limitations, Requires metals May need longer No limitations No limitations No limitations, <br /> requires pilot study pretreatment, startup time and requires pilot study <br /> specialized equip- metals pretreatment, <br /> ment,and pilot requires pilot testing <br /> testing <br /> CAst $4,147,000 $6,264,000 $6,976,000 $9,655,000 $1,228,000 $2,529,000 <br /> (In addition to one of Alternatives 1 through <br /> 4) <br /> Compliance with Satisfy action-specific ARARs; no location-specific ARARs preclude implementation of any Does not comply (Same as for Alternatives 1 through 4) <br /> ARARs alternative. Reatability testing required to verify that contaminant-specific ARARs and cleanup <br /> levels attainable(except for Alternative 1 and Optional Component A) <br /> Overall Protection of Protect human health and environment(except in the short tens) Does not protect Allow groundwater users to remain exposed <br /> Human Healthand <br /> the Environment human health and to background arsenic levels <br /> e <br /> environment <br />