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been excavated to a depth of 20 to 25 feet, and also has steep sideslopes. The easily <br />available borrow has been removed and only small quantities of soil and shell rock are <br />presently being excavated. <br />The borrow pond water surface is drawn down by pumping to an elevation of 10 to 15 <br />feet NGVD to remove soil and shell rock. The borrow pond drawdown lowers the <br />adjacent stormwater pond to a water level in the range of 12 to 20 feet NGVD, resulting <br />in significant stormwater storage volume in the stormwater pond. The borrow <br />operation has been continuous since its inception, and the stormwater pond has never <br />discharged directly to the stormwater control weir located on the Indian River Farms <br />Water Control District C-6 canal. <br />Pump discharge from the borrow pump is routed through a series of sedimentation <br />basins, which allows turbidity to settle, prior to release to a culvert leading to the C-6 <br />canal upstream of the stormwater pond discharge weir. <br />Construction and filling of the infill segment results in a significant modification to the <br />existing Segment 1 and Segment 2 stormwater systems. The modified stormwater <br />control system is comprised of an interim stormwater diversion system on the east <br />sideslope of Segment 1 and west sideslope of Segment 2; and permanent modifications <br />of perimeter ditches, and culverts. Permanent letdown structures and pipe will be <br />installed in phases on the north, east and south sideslopes of infill segment and <br />Segment 2. <br />• <br />