2514 RAINIER AVE 2022-03-01 - Laserfiche WebLink

remarks under each comment are perfectly acceptable). If you need this comment letter in electronic form, please contact Sabrina Fandler at SFandler(cr�,everettwa.gov. i. See revisions to general notes on sheet CO.00. ii. See redlines to demo plan on sheets C1.01 and C1.OIA. iii. See comments requiring plan note updates for the water line demo and installation on sheets C 1.02 and C5.02. iv. See comments requiring plan note updates for the TESC Filtration system notes o sheet C2.00 and C2.00A. v. See revisions to TESC plan on sheets C2.01, C2.0IA, C2.02, and C2.10. vi. Under the CSWPPP Section of the drainage report (or on the 2.00 series of the plans, include the modified SWPPP elements. All 13 elements must be addressed. See attached for reference of what must be completed and turned in. I have this electronically if you need. Email me for a copy to paste the text into your report or plans to complete the checklist (SFandlerkeverettwa. oy). vii. See redlines on sheet C3.02 to correct layer state issues. viii. See revisions to City of Everett Storm Drainage Notes on sheet C4.00 and C4.00A. Required to update notes to be applicable to this project in the combined sewer system. The City will accept modifying the note or removing it, whichever is the most appropriate solution. ix. See redlines on sheet C4.02 for required corrections to plans (or provide responses to these comments, as necessary). x. See Stormwater review comments below for required plan revisions to C4.00 series plans (redlines not provided). xi. On C5.00 series plan sheets, connections to the clay sewer shall be made at a new or existing manhole. New wye connections will not be allowed. 2. The comments below were generated from this project's Stormwater Reviewer. If you have any questions regarding these comments, please contact Amie Roshak with the City of Everett Public Works Department (425-257-7249 or ARoshakkeverettwa.gov). a. Surface water: i. Floatable material separator shall be per STD DWG 414 for 12-inch or larger pipe (STD DWG 413 is only for 6 or 8-inch lines). If existing CB is TYPE 1, it will need to be replaced with a Type 2 CB to install the floatable material separator per City standards. ii. Interim policy 2-11 for surface water management in the combined sewer area applies for the project. iii. Temporary Phase with portables must address minimum requirement #7 for flow control. Provide calculations showing that addition of portables does not increase flow to the combined system by more than 0.1 cubic foot per second in the 100-year return storm or provide flow control. (Can be submitted in follow- up report if this is to be under a separate permit for portables only. ) b. Infiltration Trench (Bid Alternate) requirements: i. The trench width in MGS Flood modeling calculations is 5.75 feet but only 4 feet wide shown in the plans. The width of the trench shall be the width in contact with the infiltrating soil layer. ii. The geotechnical report indicates that infiltration rates greater than 0.5 in/hr are not encountered at depths shallower than 19 ft bgs, yet the trench is only 16.5 ft bgs. Confirm depth of infiltration trench is adequate to achieve th design infiltration rate. (Response required)