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Dry Pond Maintenance Requirements <br /> Important operation and maintenance procedures: <br /> 5 <br /> - The drainage area will be managed to reduce the sediment load to the dry pond. <br /> - Immediately after the dry pond is established, the vegetation will be watered twice weekly if needed until <br /> the plants become established (commonly six weeks). <br /> - After the initial fertilization to establish vegetation in the dry pond, fertilizer will not be applied to the dry <br /> pond. <br /> - The vegetation in and around the basin will be maintained at a height of approximately six inches. <br /> - At least once annually, a dam safety expert will inspect the embankment. Any problems that are found <br /> will be repaired immediately. <br /> After the dry pond is established, it shall be inspected quarterly and within 24 hours after every storm event greater <br /> than 1.0 inches (or 1.5 inches if in a Coastal County). Records of operation and maintenance shall be kept in a known <br /> set location and shall be available upon request. <br /> Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately. <br /> SCM element: Potential problem: How to remediate the problem: <br /> The entire SCM Trash/debris is present. Remove the trash/debris. <br /> Areas of bare soil and/or Regrade the soil if necessary to remove the gully, plant ground <br /> The perimeter of the SCM erosive gullies have cover and water until it is established. Provide lime and a one- <br /> formed. time fertilizer application. <br /> The inlet pipe is clogged (if Unclog the pipe. Dispose of the sediment in a location where it <br /> applicable). will not cause impacts to streams or the SCM. <br /> The inlet pipe is cracked or <br /> The inlet device otherwise damaged (if Repair or replace the pipe. <br /> applicable). <br /> Erosion is occurring in the Regrade the swale if necessary and provide erosion control <br /> swale (if applicable). devices such as reinforced turf matting or riprap to avoid future <br /> problems with erosion. <br /> Sediment has accumulated Search for the source of the sediment and remedy the problem if <br /> to a depth greater than the possible. Remove the sediment and dispose of it in a location <br /> original design depth for where it will not cause impacts to streams or the SCM. <br /> sediment storage. <br /> The forebay <br /> Erosion has occurred. Provide additional erosion protection such as reinforced turf <br /> matting or riprap if needed to prevent future erosion problems. <br /> Weeds are present. Remove the weeds, preferably by hand. If pesticide is used, wipe <br /> it on the plants rather than spraying. <br /> Sediment has accumulated Search for the source of the sediment and remedy the problem if <br /> to a depth greater than the possible. Remove the sediment and dispose of it in a location <br /> original design depth for where it will not cause impacts to streams or the SCM. <br /> sediment storage. <br /> The main treatment area Water is standing more Check the outlet structure for clogging. If it is a design issue, <br /> than 5 days after a storm consult an appropriate professional. <br /> event. <br /> Weeds and noxious plants Remove the weeds, preferably by hand. If pesticide is used, wipe <br /> are growing in the main it on the plants rather than spraying. <br /> treatment area. <br />