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� P . <br />Comments on Proposed Project <br />The Vista plan is to excavate the 13 acre lake site to a depth of <br />approximately (-)8 ft. MSL. A suggested alternative plan is shown in <br />Figure 4 that•provides approximately 4 acres of submerged wetlands. All <br />spoil is co be removed to upland areas west of the original 1958 dike., The <br />project has a number of economic, environmental, and aesthetic advantages <br />to the property owners, Vista Royale, and the public in general. Some of <br />these factors are: <br />1) This excavation can provide exc;:ationally good fill material <br />for the proper baseand elevation of homesites in the immediately adjacent <br />areas =- allowing savings in construction and use of on-site fill materials. <br />2)..A lake is the best use of an area already surrounded by a dike <br />system -- allowing maximum utilization of facilities already provided by <br />the Mosquito Control. <br />3) Such an impoundment is an ideal reservoir for storm -water runoff <br />from the Vista Royale project. This can be managed to assure continued or <br />improved water quality in the Indian River. The lake could handle the <br />runoff from a 6" rainstorm without flooding. <br />Storm Data for the Vero Beach Area <br />Storm Return <br />lhrration Rainfall Interval <br />luurs)_ (Inches) (Years) <br />2 5.5 100 <br />3 5.7.. 50 <br />6 6.4 25 <br />12 5.7 5 <br />24 5.2 2 <br />4) Such a lake could be managed to provide fresh -water recharge <br />at a most effective point to retard or prevent salt -water intrusion under <br />the surrounding areas. <br />5) Such a lake could be designed and managed to maintain water <br />levels to continuously cover the area as a mosquito control measure. <br />9 <br />11 <br />Wl 29 „ 6 <br />'p�e <br />