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<br /> visual screening and feasible power plant operation, the Planning and Zoning
<br /> Commission recommended that a Type "A" buffer be required for this area, but the
<br /> applicant be allowed to use landscape material that may have a lower mature height,
<br /> which will allow an adequate vertical clearance beneath the overhead tie lines . Staff
<br /> supports this recommendation and landscape material selection allowance. Detailed
<br /> material specifications can be finalized during the major site plan review and
<br /> approval process. The applicant can provide the Planning and Zoning Commission
<br /> a detailed landscape design at the time of major site plan.
<br /> Also, it should be noted that the proposed power plant will have a lower profile than
<br /> the City of Vero Beach Power Plant. The lower profile will make the proposed plant
<br /> less visually obtrusive and easier to screen than a conventional power plant. For
<br /> example, according to city officials the tallest structures at the City of Vero Beach
<br /> Power Plant are the exhaust stacks which are 250 ' tall . The tallest structures
<br /> proposed at the Calpine Plant are the four stacks at 142 ' tall . The other main
<br /> difference in appearance between the two facilities is that the City of Vero Beach has
<br /> enclosed all of its generators and equipment, while the Calpine equipment will not
<br /> be enclosed. The City of Vero Beach building is approximately 65 ' in overall height.
<br /> By not enclosing the generators and other equipment, Calpine will reduce the mass
<br /> of the proposed facility. The size of the other equipment, such as the cooling towers ,
<br /> will be similar to those at the City Power Plant. The site plan graphics provided by
<br /> the applicant for the staff report list the equipment type, height and dimensions
<br /> ( attachment #3 ) .
<br /> Air Quality : Emissions from the plant will be monitored by the Department of
<br /> Environmental Protection (DEP) . The applicant has provided preliminary estimated
<br /> plant performance and emissions data which have been routed to the Department of
<br /> Health for its review and comment . The DEP has indicated that the proposed 711
<br /> emissions are in line with the allowable emissions . The applicant has indicated that
<br /> the plant will use the best available technology to limit emissions .
<br /> 19. Locational Criteria : Based on discussions with the applicant. the main locational criterion
<br /> for the plant is convenient access to the Florida Power Grid, a component of which is the 230
<br /> KV transmission lines running west of I- 95 . This is essential for the plant to export power
<br /> to its wholesale customers . The plant is sited near these lines , and will connect to them via
<br /> overhead tie lines .
<br /> Another important locational criterion for the applicant is access to a supply of natural gas
<br /> necessary to fuel the plant . Currently , there is an existing gas transmission line which nuns
<br /> west of I- 95 and can provide fuel ; however, the applicant has indicated that its primary
<br /> choice will be to obtain natural gas from Gulfstream Natural Gas Systems . Gulfstream is in
<br /> the process of constructing a new gas line which will connect to the site from the south, just
<br /> west of I- 95 .
<br /> Another locational criterion is the availability of non-potable water for the plant ' s operating
<br /> process . Water is a resource that the plant needs to create steam and cool the plant. The
<br /> applicant is working with the County and the Indian River Farms Water Control District to
<br /> use surface water and other water sources for the plant ' s non- potable water needs . Possible
<br /> water sources could include treated effluent, diluted brine water from the reverse osmosis
<br /> plant and stormwater from the Indian River Farms Water Control District. The water will
<br /> SEPTEMBER 18 , 2001 �1J
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