2712 TAYLOR DR 2023-11-01 - Laserfiche WebLink

Results Expected When Maintenance is per- Maintenance Defect Conditions When Maintenance Is Needed formed Component Trash or debris which is located immediately in front of the catch basin opening or is blocking inletting capacity of the basin by more than 10%. No Trash or debris located immediately in front of Trash or debris (m the basin) that exceeds 60 percent of the sump depth as measured from the bottom of basin to invert of the lowest pipe into or out of the catch basin or on grate opening. basin, but in no case less than a minimum of six inches clearance from the debris surface to the invert of the lowest pipe. No trash or debris in the catch basin. Trash & Debris Trash or debris in any inlet or outlet pipe blocking more than 1/3 of its height. Inlet and outlet pipes free of trash or debris. Dead animals orvegetation that could generate odors that could cause complaints or dangerous gases (e.g., methane). No dead animals orvegetation present within the catch basin. Sediment (in the basin) that exceeds 60 percent of the sump depth as measured from the bottom of basin to invert of the lowest pipe into or out of the Sediment basin, but in no case less than a minimum of 6 inches clearancefrom the sediment surface to the invert of the lowest pipe. No sediment in the catch basin Top slab is free of holes and cracks. General Structure Damage to Top slab has holes larger than 2 square inches or cracks wider than 1/4 inch: (Intent is to make sure no material is running into basin). Frame is sitting flush on the riser rings atop slab Frame andlorTop Slab Frame not sitting,flush on top slab, i.e., separation of more than 3/4 inch of the frame from the top slab. Frame not securely attached and firmly altachetl. Maintenance person judges that structure is unsound. _ Basin replaced or iepaired to design standards. Fractures or Cracks in Grout fillet has separated or cracked wider than 1/2 inch and longer than 1 foot at the joint of any inlet/outlet pipe or any evidence of soil particles entering pipe is regrouted and secure at basin wall. Basin Walls/ Bottom catch basin through cracks. Settlement/ Mis- if failure of basin has created a safety, function, or design problem. Basin replaced or tepaired to design standards, alignment Vegetation growing across and blocking more than 10% of the basin opening: No vegetation blocking opening to basin. Vegetation Vegetation growing in inlet/outlet pipe joints that is more than six inches tall and less than six inches apart. No vegetation or root growth present. Contamination and Pol- See Table V-A.1: Maintenance Standards- Detention Ponds No pollution present. lution Cover/grate is in place, meets design standards, Cover Not in Place Cover is missing or only partially in place. Any open catch basin requires maintenance. and is secured Catch Basin Locking Mechanism Mechanism cannot be opened by one maintenance person with proper tools. Bolts into frame have less than 1/2 inch of thread. Mechanism opens with proper tools. Cover . Not Working Cover Difficult to One maintenance person cannot remove lid after applying normal lifting pressure. Cover can be removed by one maintenance per - Remove (Intent is keep cover from seating off access to maintenance.) son. Ladder meets'design standards and allows main - Ladder Ladder Rungs Unsafe Ladder is unsafe due to missing rungs, not securely attached to basin wall, misalignmdnt, rust, cracks', or sharp edges. tenance person safe access. Grate opening Unsafe Grate with opening wider than 7/8 inch. Grate opening meets design standards. Metal Grates Trash and Debris Trash and debristhat is blocking more than 20% of grate surface inletting capacity. Grate free of trash and debds. (If Applicable) Grate is in place, meets the design standards, and Damaged or Missing. Grate missing or broken member(s) of the grate. is installed and aligned with the flow path. 2019 StormwaterManagement Manual for Western Washington Volume V-Appendix A- Page 1009