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roadway medians and rights-of-way. These alternatives, however, will not allow for large canopy trees in medians and rights-of-way. If the Board desires large canopy trees, such as oaks and palms, in the CR 512 median then changes to the preliminary design will need to be made. Such changes would impact only the segment of CR 512 between I-95 and CR 510. These changes would involve extra right-of-way acquisition, curbing improvements, and possibly irrigation systems that would significantly increase project costs from roughly $11,000,000 to as much as $13,000,000 (see attachment #3). Maintenance costs would also increase. East of CR 510, opportunities for an expanded CR 512 right-of-way are constrained by the South Prong bridge and environmentally sensitive lands and by the developed properties along CR 512. To continue with project design, staff needs direction from the Board regarding its expectations for landscaping within the improved CR 512 road right-of-way. RECOMMENDATION: Staff recommends that the Board of County Commissioners: 1. Set a date in September for a public workshop to discuss landscaping issues. Staff finther recommends that the workshop be a joint meeting of the Board of County Commissioners, the Planning and Zoning Commission and the PSAC. 2. Invoke the pending ordinance doctrine and direct staff to apply the requirements of the attached proposed ordinance to new development project applications. 3. Provide staff with general direction on the extent of landscaping to be incorporated in the CR 512 (I-95 to Roseland Road) widening project design. ATTACHMENTS: 1. Minutes from June 12, 1997 Planning and Zoning Commission Meeting 2. Report to PSAC (contains analysis and proposed ordinance) 3. Memo from County Engineer Chairman Eggert pointed out that if the Board wished to see additional landscaping for new multi -family residential developments along Indian River Boulevard, now is the time to invoke the pending ordinance doctrine. Chairman Eggert has become increasingly concerned about a number of places around the county without a good line -of -sight. She reasoned that sight lines have been checked by someone in a truck, not a car. She suggested that Road & Bridge check out the lines -of -sight from a car. Commissioner Ginn thought that ease -of -maintenance was an important consideration in landscaping corridors. Commissioner Macht agreed ease -of -maintenance, reduced watering requirements, and concern for costs were important. He did not see any reference to native plants in the ordinance, but Commissioner Adams noted she saw it on page 93 of the backup. 31 E©OK I U. JULY 229 1997