6009 FLEMING ST 2021-06-09 - Laserfiche WebLink

• Popach Short Plat—2 Lots Table V-4.5.2(22) Maintenance Standards - Permeable. Pavement • (continued) Recommended Fre- Condition quency a when Main- Component tenance is Action Needed (Procedures) Inspection Routine Needed • Maintenance (Standards) Aggregate Storage Reservoir Water remains in the storage If immediate cause of extended aggregate ponding is not identified, sched- • Observation longer than port A' S anticipated by ule investigation of subsurface design after materials or other potential the end of a causes of system failure, storm • Vegetation Vegetation • Sweep leaf litter and sed- imentto prevent surface related fallout As needed clogs or will clogging and ponding potentially • Prevent large root systems • clog voids from damaging subsurface Adjacent structural components large shrubs Vegetation Edging and trimming of planted or trees growing bey- areas to control groundcovers Once in May and facility and shrubs from overreaching • and Once in edge onto the sidewalks, paths and street September sidewalks, edge improves appearance and paths,and reduces clogging of permeable street edge pavements by leaf litter, mulch and soil. • In fall (Octo- ber to Decem- Use leaf blower or vacuum to Leaves, ber)after leaf Accumulation blow or remove leaves, ever- needles, drop(1-3 of organic and organic times, debris and green needles, and debris (i.e., debris depending leaf litter flowers, blossoms)off of and • on canopy away from permeable pavement cover) Note that the inspection and routine maintenance frequencies listed above are recom- 2014 Stormwater Management Manual for Western Washington Volume V- Chapter 4-Page 901 WESTERN ENGINEERS,INC. 18 PROJECT:15-1463-A