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Exhibit "D" <br />IR Impoundment #18 Management Plan <br />May 1992 <br />b. NORTHEAST CELL. This cell, which contains several large <br />ponds (containing tarpon) also has mostly dead red mangroves <br />with new ones coming in. In its interior are also some- Brazilian <br />pepper (Schinus terebinthifolius) on numerous hillocks. <br />Scattered leather fern (Acrostichum sop.) and white mangroves <br />(Lasuncularia race mosa) is also present here. Dense patches of <br />widgeongrass and a few scattered cattail (Tvpha spp.) are <br />present. Also two types of ferns (apparently upland species) <br />were noted- <br />C. <br />otedc. EAST TIP CELL. This cell is largely dead red with some <br />white mangroves in the interior. Thcae are some open areas in <br />particular in the north portion of this cell. Primarily red <br />mangroves are sprouting up in the interior with a few scattered <br />black mangroves (Avicenna germinans). A few leather fern and <br />cattails were also present along with wklgeongrass. <br />d. CENTER CELL. This cell is quite open with areas of dense <br />dead red mang,-oves. New reds are colonizing. Widgeongrass <br />and Chara are present. Numerous hillocks above the high water <br />line occur here. <br />e. CENTER WEST CELL. Dense areas of dead red mangroves <br />are present with considerable recolonization by the same species <br />along with scattered white & black mangrove. Also present are <br />leather fern, Salicornia virzinica (giasswort) on numerous <br />hillocks. <br />f. SOUTHWEST CELL. Dense areas of dead red mangroves but <br />with touch revegemtion occurring. Live vegetation includes red <br />& white with occasional black mangroves, also dense leather <br />fern in some locations. Ruppia and cattails present. Some <br />upland wer,,Wground cover present in drier areas. Giasswort <br />also present in a few locations. <br />g. SOUTHEAST CELL. This cell is very open with, where <br />vegetation is present, mostly red and infrequently white <br />mangroves in the interior. Widgeongrass and Chara are also <br />present. <br />h. FRESHWATER POND. This pond, which is not connected to <br />the impoundment, is densely vegetated with cattails and Chara. <br />i. MUOUNDM ENT DEM. The perimeter and interior dikes <br />are vegetated similarly to dikes throughout IRC. Brazilian <br />pepper dominates . with scattered black mangroves, white <br />_ mangroves and buttonwood (Conocarnus erecta). Some portions <br />of the dike are densely vegetated with Sea daisy orrichia <br />frutescens . In a few locations, Suaeda linearis (Sea blite) <br />occurs. <br />N. <br />