6009 FLEMING ST 2021-06-09 - Laserfiche WebLink

• Popach Short Plat—2 Lots Table V-4.5.2(5) Maintenance Standards - Catch Basins Results• Maintenance Conditions When Maintenance is Expected Defect When Main- Component Needed tenance is performed No Trash or • debris loc- Trash or debris which is located imme- ated imme- diately in front of the catch basin opening or diately in is blocking insetting capacity of the basin by front of catch more than 10%. basin or on • Trash or debris(in the basin)that exceeds grate open- 60 percent of the sump depth as measured ing• from the bottom of basin to invert of the low- No trash or est pipe into or out of the basin, but in no debris in the Trash & case less than a minimum of six inches catch basin. • Debris clearance from the debris surface to the invert of the lowest pipe. Inlet and out- let pipes free Trash or debris in any inlet or outlet pipe of trash or blocking more than 1/3 of its height. debris. • General Dead animals or vegetation that could gen- No dead erate odors that could cause complaints or animals or dangerous gases(e.g.,methane). vegetation present within the • catch basin. Sediment(in the basin)that exceeds 60 per- cent of the sump depth as measured from the bottom of basin to invert of the lowest pipe into or out of the basin, but in no case No sediment • Sediment ►ess than a minimum of 6 inches clearance in the catch from the sediment surface to the invert of the basin lowest pipe. Structure Top slab has holes larger than 2 square Top slab is • Damage to inches or cracks wider than 1/4 inch. (Intent free of holes Frame and/or is to make sure no material is running into and cracks. Top Slab basin). Frame is sit- 2014 Stormwater Management Manual for Western Washington Volume V- Chapter 4 -Page 838 WESTERN ENGINEERS,INC. 20 PROJECT:15-1463-A •