2610 W CASINO RD VERIZON 2025-07-25

I Stormwater Management Report Everett,WA I Proper maintenance is important for adequate functioning of the stormwater facilities. The Ifollowing maintenance program is recommended for this project: INO. 1 — CATCH BASINS Maintenance Defect or Problem Conditions When Maintenance is Needed Results Expected When Component Maintenance is performed General Trash &Debris Trash or debris of more than'/z cubic foot which No Trash or debris located (Includes Sediment) is located immediately in front of the catch basin immediately in front of catch basin opening or is blocking capacity of the basin by opening. I more than 10%. Trash or debris(in the basin)that exceeds 1/3 the No trash or debris in the catch basin. depth from the bottom of basin to invert the lowest pipe into or out of the basin. I Trash or debris in any inlet or outlet pipe blocking Inlet and outlet pipes free of trash or more than 1/3 of its height. debris. Dead animals or vegetation that could generate No dead animals or vegetation odors that could cause complaints or dangerous present within the catch basin. gases(e.g.,methane). I Deposits of garbage exceeding 1 cubic foot in No condition present which would I volume. attract or support the breeding of insects or rodents. Structure Damage to Corner of frame extends more than 3/inch past Frame is even with curb. Frame and/or Top curb face into the street(If applicable). I Slab • Top slab has holes larger than 2 square inches Top slab is free of holes and cracks. or cracks wider than 1/4 inch(intent is to make Isure all material is running into basin). Frame not sitting flush on top slab,i.e.,separation Frame is sitting flush on top slab. of more than 3/4 inch of the frame from the top I slab. Cracks in Basin Cracks wider than '/z inch and longer than 3 feet, Basin replaced or repaired to design Walls/Bottom any evidence of soil particles entering catch basin standards. through cracks,or maintenance person judges that Istructure is unsound. Cracks wider than'/z inch and longer than 1 foot at No cracks more than'A inch wide at the joint of any inlet/outlet pipe or any evidence of the joint of inlet/outlet pipe. Isoil particles entering catch basin through cracks. Settlement/ Basin has settled more than 1 inch or has rotated Basin replaced or repaired to design Misalignment more than 2 inches out of alignment. standards. IFire Hazard Presence of chemicals such as natural gas,oil and No flammable chemicals present. gasoline. I Vegetation Vegetation growing across and blocking more than No vegetation blocking opening to 10%of the basin opening. basin. Vegetation growing in inlet/outlet pipe joints that is No vegetation or root growth present. more than 6 inches tall and less than 6 inches I apart. Pollution Nonflammable chemicals of more than '/ cubic No pollution present other than foot per three feet of basin length. surface film. I IPACLAND Job# 50183001 Page 5