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Final Report - VHB.com

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Table 5.1-1. Environmental Evaluation Metrics<br />

Resource/Impact<br />

Wetlands<br />

Water Quality<br />

Floodplains<br />

Aquifer<br />

Farmland<br />

Rare, Threatened, Endangered Species/Habitat<br />

Parkland & Recreation<br />

ROW Displacement<br />

Historic/Archeological Resources<br />

Hazardous Waste<br />

Construction Cost<br />

ROW Cost<br />

Estimated Annual Tax Loss<br />

Metric<br />

Acres of Dredge/Fill<br />

Number of Stream Crossings<br />

Acres of New Pavement<br />

Acres of New Pavement<br />

Acres of Disturbance<br />

Acres of Disturbance<br />

Acres of Disturbance<br />

Within the Proposed Project Footprint<br />

Acres of Full Acquisition<br />

Acres of Partial Acquisition<br />

Number of Known Archeological Sites<br />

Number of Standing Potential Structures<br />

Within the Proposed Project Footprint<br />

2010 Dollars<br />

2010 Dollars<br />

2010 Dollars<br />

5.2 Options Evaluation<br />

This section summarizes evaluation results for each strategy and option considered<br />

in this Feasibility Study, as well as evaluation results for the No Action Option.<br />

Figure 5-1 shows the 2035 DHV LOS for each option. Table 5.1-2 tabulates impacts<br />

and costs of each option and provides a green, yellow, or red rating to demonstrate<br />

how well each option meets the objectives of the Study.<br />

Section 5.2.2 describes the potential effect of the various TDM measures on peak<br />

traffic demands (i.e., DHV) in the Study Area. As discussed in Chapter 4,<br />

supplemental analyses were performed for each Build Option considering the<br />

implementation of an aggressive TDM program in the Study Area and region. The<br />

level of improvement in traffic operations associated with the TDM reduction in<br />

DHV is described for each applicable Build Option.<br />

5.2.1 No Action<br />

The No Action Option is the continuation and perpetuation of the existing<br />

transportation infrastructure in the Study Area. Therefore, the No Action analysis<br />

scenario does not consider any physical roadway or intersection improvements in the<br />

Study Area (except those previously discussed in Chapter 3). However, it assumes<br />

that traffic volumes will continue to grow to the design year 2035, including<br />

redevelopment of the NASB and Topsham Annex. As shown in Figure 5-1, the No<br />

Action Option results in the substantial degradation of traffic operations at eight of<br />

the Study Area signalized intersections along State Route 196, Pleasant Street, and<br />

Conclusions 143

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