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Alternative 1 is assumed to have a development cost of zero, because
<br />no major development other than additional aircraft storage is required.
<br />Alternative 2 has an estimated development cost of $691,000. This estimate,
<br />which was inflated from the 1976 Lake Elmo master plan, includes a 1,000-
<br />foot long runway extension at the airport to help attract diversion from St.
<br />Paul Downtown. It should be noted that a comprehensive development plan
<br />update and environmental assessment would be required to determine the
<br />ultimate length of .this extension, which was considered in all diversion
<br />alternatives.
<br />Alternative 3 is estimated to cost $3,454,000 in 1989 dollars.
<br />Alternative 3's cost includes $2,454,000 for a parallel runway/taxiway and
<br />$1,000,000 for an air traffic control tower at Anoka County-Blaine Airport.
<br />Costs for the pazallel runway/taxiway were derived from the airport's 1983
<br />master plan.
<br />Alternative 4 is a combination of the costs of Alternatives 2 and 3,
<br />yielding a 1989 cost of $4,145,000. Improvements associated with Alternative
<br />5 aze estimated to cost $8,434,000. This figure includes $7,743,000 for
<br />improvements to Gateway North Industrial Airport and $691,000 for
<br />improvements at Lake Elmo. Cost estimates for improvements at Gateway
<br />North Industrial are based on data presented in the airport's Draft
<br />Environmental Information Document Airport Improvement Program.
<br />Approximately $4,000,000 is for land acquisition and relocation expenses.
<br />Alternative 6 is estimated to cost $$6,891,000. Of this cost, $6,200,000
<br />is for the development of a new airport, including a 5,000-foot long rumvay
<br />and pazallel taxiway, a 500-acre land envelope, an access road, apron,
<br />NAVAIDs, and auto pazking. This would provide for minimum airport
<br />development. Additional land would be required to accommodate a crosswind
<br />rnmvay and expanded landside facilities. The remaining $691,000 is for
<br />improvements at Lake Elmo Airport.
<br />Development costs for Alternative 7 aze estimated at $11,888,000. This
<br />cost includes $7,743,000 for improvements to Gateway North Industrial,
<br />$2,454,000 for a parallel runway/taxiway, and $1,000,000 for an air traffic
<br />control tower at Anoka County-Blaine, and $691,000 for a runway extension
<br />at Lake Elmo.
<br />Alternative 8 is estimated to have $10,345,000 of associated
<br />development costs. This cost includes approximately $691,000 for a runway
<br />extension at Lake Elmo, $2,454,000 for a parallel runway/taxiway and
<br />$1,000,000 for an air traffic control tower at Anoka County-Blaine, and
<br />$6,200,000 for a new airport is Search Area "A".
<br />Alternatives 1 and 2, with development costs estimated at zero and
<br />$691,000, respectively, received ratings of 5. Alternatives 3 and 4, with
<br />IV-52
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