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Nestle USA, Inc.—Ripon, CA January 28, 2011 <br /> 2011 Revised Feasibility Study <br /> 9.4.4.1 Effectiveness <br /> The use of local ordinances and institution of property use restrictions are <br /> effective ways to handle or address COCs left in place when other remedial <br /> measures are not possible or if feasible remedial measures do not achieve <br /> acceptable COC concentrations. <br /> 9.4.4.2 Implementability <br /> Beyond federal, state and local ordinances, control. monitoring, and well <br /> installation issues require a focused level of cooperation with these agencies and <br /> other parties. <br /> 9.4.4.3 Relative Cost <br /> The cost for establishing control, monitoring, and well installation restrictions is <br /> dependent on agreements with property owners. Similarly, establishing any <br /> additional ordinances is the responsibility of the City of Ripon and would require <br /> the cooperation of local regulators and community acceptance <br /> 9.4.5 Conclusion <br /> Institutional controls are a viable component of developing remedial alternatives <br /> for the Study Area and therefore are retained for further consideration. <br /> 10 Development and Screening of Alternatives for <br /> Impacted Areas <br /> 10.1 Individual Analysis of Alternatives <br /> Four alternatives developed based on the technologies considered in Section 9 <br /> are further evaluated in this section as overall approaches to addressing COC <br /> impacts across the Study Area. Figure 7 and Table 2 summarize the <br /> development of each of these alternatives. <br /> 10.1.1 Alternative 1 <br /> Alternative 1, the No Action alternative, is used a baseline against which the <br /> other three alternatives are assessed. <br /> 10.1.1.1 Description <br /> The No Action alternative would leave environmental conditions as they are. <br /> Since there are no technologies or activities involved, no time is required for <br /> implementation. The no action alternative assumes that subsurface conditions <br /> as they currently exist are allowed to continue, with current municipal and <br /> agricultural groundwater pumping remaining unchanged from current rates. <br /> 10.1.1.2 Assessment <br /> This alternative provides little protection to human health or the environment. <br /> According to the model output, this scenario would meet RAOs in approximately <br /> 75 years. Long-term and short-term effectiveness is minimal. This alternative is <br /> 40 <br />