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2009-323A
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2009-323A
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Last modified
3/17/2016 1:36:04 PM
Creation date
10/1/2015 12:58:28 AM
Metadata
Fields
Template:
Official Documents
Official Document Type
Certificate
Approved Date
12/15/2009
Control Number
2009-323A
Agenda Item Number
8.D.
Entity Name
Florida Inland Navigation District
Subject
Dredged Material Exhibit B
Supplemental fields
SmeadsoftID
7963
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( Section 2 .3 .3 ) indicates the IR- 14 containment basin design provides sufficient retention time to allow <br /> precipitation of the finest sediments anticipated in Reach III without recourse to spur dikes . <br /> 2. 3. 5 Ramps <br /> An important goal of the Long-Range Dredged Material Management Program for Florida ' s ICWW <br /> is to manage each dredged material management site as a permanent operating facility. This goal carries two <br /> operational criteria. First, the material is to be actively worked to accelerate the drying process and thus <br /> render the material suitable for removal and reuse as quickly as possible . Second, to restore the basin 's <br /> capacity and thereby extend its service life, material must be removed from the basin at or before the point <br /> at which the basin reaches its design capacity. As a result, ramps to provide heavy equipment access to the <br /> containment basin interior have been integrated into the design of the containment dike (Figures 2 . 1 and 2 . 5 ). <br /> Thus, the site is designed to function more as a material processing and rehandling station than as a <br /> permanent storage facility. Although the design capacity ofthelR- 14containment basin ( 178,051 cy, Section <br /> 2 . 1 . 2) is adequate to receive the projected 50-year material storage requirement for Reach III, removing the <br /> dewatered material off site can effectively expand its capacity. In this manner, the useful service life of the <br /> site may extend indefinitely. In addition to providing for material removal, the ramps also allow easy entry <br /> for equipment used in the dewatering process. This latter process is discussed in Section 4 . 1 . <br /> The ramps will be positioned on the western and southern sides of the containment dike. An on-site <br /> access road will connect the ramps to Indian River Boulevard (Figure 2. 1 ). Obliquely traversing the <br /> containment dike, the ramps will maintain the same 1 V43H side slope as the dike. The road surface of the <br /> ramps will be 12 R wide with an ascending/descending grade of 5%. <br /> 2. 3. 6 Perimeter Ditch <br /> Saltwater seepage from the interior of the containment basin into the on- site shallow aquifer is not <br /> expected to be a significant problem for several reasons. First, saltwater pumped from the ICWW (Indian <br /> River) will remain ponded within the containment basin only during actual dredging operations and for a <br /> short period immediately following dredging as the clarified effluent is released back to the ICWW. Such <br /> periods are expected to last approximately 8 to 12 weeks, once every 5 to 10 years . Second, during the site ' s <br /> 21 <br />
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