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CITY OF EVERETT STORMWATER MANAGEMENT MANUAL <br /> Date _ <br /> Dninage <br /> S�� Maintenance Actividea and Conditions <br /> Frequancy Fsature ✓ � � � Problem CondlNonsto Check For ThatShould Ezisf <br /> M Generel InIeVOutlel InleUoutlet areas clogged with sediment antl/or Remove material sv that there is no clogging <br /> debris. or blockage in the inlel and outlet area. <br /> M General Trash and Debns Trash and debns aaumulated in the bioswale. Remove leaves, litter,antl oily matenals, and <br /> Accumulation re-seed or re•sod, and regrade, as needed. <br /> Clean curb cuts and Ievel spreaders as <br /> needed. <br /> M General Erosion/Scounng Eroded or scoured swale botlom due lo Aow For ruts or bare areas less than 12 inches <br /> channeGzation,or hlgher flows. wide, repau the damaged area by fdlin9 with <br /> crushed g2vel.If bare areas are lerge, <br /> generelly greater than 12 inches wide, the <br /> I swale should be re�raded and ra-seeded. <br /> For smaller bare areas,overseed when bare <br /> spots are evident,or ta�e plugs of grass/rom <br /> tho upper slope and planl in the swale boqom <br /> at 8-inch inlervals. <br /> If you are unsure whether a problem exists, please confact a professional engineer. <br /> Key. <br /> (M) Monthly from October through April. <br /> (A) Once in late summer(preferably September) <br /> (S) Afler any major storm (use 1 inch in 24 hours as a guidehne). <br /> � Appendices <br /> F-?2 <br />