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Board of County Commissioners Indian River County 1840 25th Street, Vero Beach, Florida 32960 Mr. and Mrs. R.O. Menendez 6526 Paradise Lane Sebastian, Fl. 32958 6 June 1987 - Subject:, Paving improvement and Drainage Maintenance to Floravon Shores 110th Street (also known as Paradise Lane). Dear Board Members: Recently the Indian River Planning Office has recommended that 110th Street (Paradise Lane) of Floravon Shores be re -paved with an asphalt surface as a measure to eliminate the temporary yard flooding which occurs on the lower lots closer to the Indian River and to im- prove the road condition during heavy rain. This letter Is a request to the Board of County Commissioners to vote against the adoption of the authorizing resolution and assessment roll for the above stated project as It presently stands. Also a suggestion for alternative action Is provided. In our opinion, the reason why flooding of the lower lots in this street takes place is the lack of maintenance work on the retention swells sur- rounding the lots In question. This problem has been compounded by the frequency and the manner in which the Public Works Department grades this street. Deep blade grading (with blade settings 4 to 8 in- ches below the surface of the road) has contributed to an accumula- tion of marl and shale at the lower end of the street, which in turn proceeds to fill the access to the retention swells in question. Proper maintenance of the swells and the street surface would prevent the flooding that presently takes place. The flooding situation Is not com- mon to the higher lots In this street and consequently it does not war- rant the imposition of drainage maintenance or Improvements on the__ higher lots easements closer to U.S. 1. The grading method has also contributed to a degradation of the road surface, which is only a significant inconvenience immediately after heavy rains. However, the present street surface and the ad- jacent lot terrains are highly permeable. Therefore, most of the rain im- pinging on the road is absorbed rapidly through Its surface, reducing the residual road run-off flowing Into the swells. Since most of the lots on 110th street do not have functional culverts, any residual run-off into the higher lots swells is presently effectively retained on these lots and does not contribute to the flooding of the lower lots. Replacing the present permeable road surface with impermeable as- phalt and Installing culverts along all the lots on the street will increase the amount of run-off flowing Into the affected area. This in turn will re- quire larger retention swells in the lower areas. Potentially, water con- taining tar oil residues from the street surface may find its way into the Indian River from the lower lot retaining swells without proper natural filtration, compounding the run-off pollution which the County and the State are attempting to reduce via other programs. 16 BOOK FACE 504