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_ry <br />File <br />flay 15, 1981 <br />Page three <br />Mosau i Lo Control lint-)oundments <br />M <br />Four separate cells will be crossed. one is more distinct than <br />the other three in that it has not been subjected to "dewatering" <br />by mosquito control: as requested by the property owner. This ce11 <br />apparently receives some runoff from the adjacent subdivision and <br />has a relief culvert at the southeast corner to the Main Canal. <br />This area is distinct because a viable black mangrove../seA oxeye <br />community exists. <br />The rcmai.nintj impoundment cells aro in an :Idvorno condition c111 t.c+ <br />mosquito control techniques holh impounding anti the requests oz <br />property owners to stop flooding the land, discharge of fill and <br />no efforts to restore tidal conditions within the watland. Thi-; <br />condition was worsened as a result of recent severe cold winters. <br />The result of these factors are a dry wetland, significant nuri:_,e- <br />of dead mangrove (however, several are sending out new shoots), <br />and the invasion of undersirable vegetation (Melaleuca so. and <br />peppertree). The invasion of these plants have occurrernt-ai fill <br />sites. <br />D. <br />The proposed road will cross wetlands that have been impoun ed for <br />mosquito control and large sections that are filled wetlai <br />(including back dikes). The impacts to these areas will -et <br />by fill removal and, therefore, recreating the tidal we <br />the restoration of tidal action to the impounded sites. J� <br />E. <br />Discussions with other regulatory agencies have brough t. <br />additional ways to minimize the impact. These include: <br />use of an adjustable'wier instead of a flap gate, and 2) the wal <br />of the section of back dike between Vossinbury Creek and Barber. <br />Avenue. Both of these would better restore lost wetlands. If a <br />flap gated culvert must be used then the flap gate must be installed <br />on the upstream end of the. culvert. The flap gate on the downstream <br />end serves only to drain the impoundment and not to restore tidal <br />action. The additional dike removal will also provide additional <br />sources of fill for road construction. <br />BOOK 6 PACE 865 <br />J U L 15 1981 43 <br />