Laserfiche WebLink
OPERATION & MAINTENANCE MANUAL <br /> Maintenance Defect Conditions When Maintenance is Desired Conditions <br /> Component Needed <br /> Rock Pad Missing or moved rock Only one layer of rock exists above native soil Replace rocks to design <br /> in area 5 ft2 or larger,or any exposure of standard. <br /> native soil. <br /> Rock-filled trench Missing or moved rock Trench is not full of rock. Add large rock(±30 lbs each) <br /> for pond discharge so that rock is visible above <br /> edge of trench. <br /> Dispersion trench Pipe Plugged with Accumulated sediment that exceeds 20%of Pipe cleaned/flushed. <br /> sediment the design depth. <br /> Perforations plugged Over of perforations in pipe are plugged Clean or replace perforated pipe. <br /> with debris and sediment. <br /> Not discharging water Visual evidence of water discharging at Pipe must be replaced or trench <br /> properly concentrated points along trench(normal must be redesigned/rebuilt to <br /> condition is a"sheet flow"of water along standards. <br /> trench). Intent is to prevent erosion damage. <br /> Water flows out top of Maintenance person observes water flowing Facility must be rebuilt or <br /> "distributor"catch basin out during any storm less than the design redesigned to standards. Pipe is <br /> storm or it is causing or appears likely to probably plugged or damaged <br /> cause damage. and needs replacement. <br /> Receiving area over- Water in receiving area is causing or has Stabilize slope with grass or <br /> saturated potential of causing a landslide. other vegetation,or rock if <br /> condition is severe. Contact a <br /> professional engineer for <br /> evaluation. <br /> GATES <br /> 6 <br />