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County Division of Public Works estimates that during fiscal year 2000-2001, up to 65,700 tons of road material was washed from these roads directly into the Lagoon or into ditches and canals that indirectly discharge into the Lagoon. If these roads are paved a tremendous source of stormwater borne suspended solids will be eliminated, and the suspended solids loading to the Lagoon will be significantly decreased. If the amount of suspended solids carried into the Lagoon by stormwater runoff is decreased, then the clarity of the Lagoon's water will be increased. This will create a healthier environment for seagrass and ultimately lead to enhanced seagrass coverage and growth rate. SJRWMD has awarded the County a $100,000 Grant to apply towards paving approximately 7.2 miles of roads that drain directly or indirectly into the Lagoon. This represents nearly 20.89 acres of land area that will no longer contribute fine suspended solids to stormwater runoff. Another 40.20 acres (assuming an average 70 -foot wide road right-of-way) will receive improved stormwater treatment through the construction of grass swales or other treatment systems. In total over 61 acres of contributing area will receive significant stormwater treatment improvements, making a very positive impact on the Lagoon. We estimate that up to 1,985 tons of suspended solids may be removed from current Lagoon loading each year, by paving these 7.2 miles of roads. The total estimated cost to pave 7.2 miles of roads is $3,361 980. Although the total project cost is approximately $3.4 million, per a telephone conversation on July 11, 2002 with Ms. Connie Rozier, Contracts Administrator with SJRWMD the County does not need spend the estimated $3.4 million and complete all 19 individual road projects to collect the $100 000 grant funding. To satisfy the grant requirements and collect the grant money, the County must show only that our expenditures for the road paving projects during the two-year grant penod exceed $100,000 (the amount of the grant). The number of road projects constructed during the two-year period is irrelevant; only the expenditure by the County of funds in excess of the grant amount is important The purpose of this agenda item is to request the Commission to approve the attached $100,000 Cost -Share Grant for signature by the Chairperson. RECOMMENDATIONS Staff recommends that the Board of County Commissioners approve the attached Ccst- Share Grant between SJRWMD and Indian River County, and authorize the Chairperson to sign the Grant on behalf of the County. ATTACHMENTS 1. Stormwater Cost -Share Agreement Between St. Johns River Water Manacement District And Indian River County For Roadwa P I morovements — avino And Draina Contract No. SF620AA. (two copies) July 23, 2002 75 • e