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INDIAN RIVER COUNTY, FLORIDA MEMORANDUM TO: Jason E. Brown, County Administrator FROM: Richard B. Szpyrka, P.E., Public Works Director Stan Boling, Community Development Director SUBJECT: Oslo Boat Ramp — Reduced Scope of Construction DATE: January 30, 2018 DESCRIPTION AND CONDITIONS D.F.I. On October 24, 2017 the Board of County Commissioners directed staff to reduce the scope of construction for the Oslo Boat Ramp from the current design encompassing 1.41 acres of land with 12 parking spots for trailers and 11 parking spots for cars to the following three items: • Place a material on the access roadway and turnaround area that would reduce the turbid runoff from the existing stabilized access road into the lagoon. The material used could be asphalt pavement, asphalt millings, crushed concrete, or any material that would accomplish this goal. • Remove the muck from the 5,000 +/- square foot area shown on the current Oslo Boat Ramp construction plans. • Add additional channel markers for the Oslo Boat Ramp. Staff has reviewed the current plans, discussed the changes with the various permitting agencies, and we offer the following information to the Board: ➢ The Army Corp of Engineers (ACOE) have indicated that they will not issue a permit for the current design. The ACOE have stated that the County will be required to submit a new permit application showing only the improvements that the County intends to construct. This condition will require that the County hire an engineering consultingfirm to redesign the project for permitting. This pertains mostly to the muck removal from the channel as depicted on the original design plans. The removal of the muck will require mechanical removal rather than the originally designed hydraulic pumping removal. This is due to the change in the overall design of the project. This is a more costly method of removal, but is the only option available with the reduced project scope. ➢ The St. John's River Water Management District will require the Countyto withdraw the current permit and submit a new permit application for the muck removal and stormwater treatment as needed. The District indicated that a variance for the shellfish harvesting in Class II waters would still be required due to the dredging. Since the footprint of the new improvements would be restricted to the existing area, no impacts would be felt by the surrounding mangroves, so mitigation would not be required. 223