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~J <br />2.6 Maintenance Program <br />The accumulated sediment in the ponds will be periodically, removed <br />so that it never reaches the principal spillway inlet. Checking of sediment <br />accumulation will be done quarterly, as a minimum, and more frequently <br />in late spring and summer. <br />Pond "A" must be manually dewatered after each runoff event by opening <br />the gate. This will be done between 24 and 36 hours after the runoff <br />event occurs. <br />Both sediment ponds will be checked periodically for blocking of <br />trashracks, and spillways, excessive erosion or piping, and deposition <br />of sediment in spillways. Slopes of the embankment and spillways will <br />be maintained. <br />t~ <br /> <br />~~ ~ 254 <br />