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The comments below were generated from this project's City of Everett Stormwater Reviewers. All questions shall be routed through this project's Public <br />Works Reviewer with City of Everett Permit Services. <br /># <br />Document <br />Sht/Pg <br />Reviewer's Comment <br />Designer's Response <br />Initials <br />Review Comments from DEPARTMENT NAME. _Surface Water Management , REVIEWER NAME; _Erik Emerson <br />1 <br />SSP <br />Backwater <br />. Include a labels for the lettered pipes in the <br />Calculations <br />downstream map. <br />2 <br />SSP <br />MGS <br />What do the structures "outfall" and "Null" represent? <br />Calculations <br />These are large structures, but I'm not sure how they <br />impact the stormwater design. <br />3 <br />SSP <br />Is there any concern that very high tides/storm surge will <br />impact trees with salt water? Record high tide is well above <br />the outlet IE of the Filterra device. Include a backwater <br />valve or ensure (with note on plans) that the selected tree <br />species is tolerant of occasional saltwater inundation. <br />(Downstream analysis did not indicate a tidegate at outfall. <br />If there is one this comment can be ignored.) <br />4 <br />SSP <br />WQ sizing <br />Please connect the dots from design WQ flow rate to facility <br />sizing. I was not able to locate a description of the required <br />treatment footprint or facility capacity other than a <br />statement that the treatment vault flow rate is 0.069 CFS in <br />the text. There is no way to verify that the oil control <br />design rate was used, etc. A sizing letter from the <br />manufacturer is also acceptable as long as it states the <br />design assumptions. <br />5 <br />Plans <br />C3.01 <br />Existing CB in SE corner of site is noted to be raised to <br />grade and solid lid. Why not remove as this does not <br />appear to be junction or serve any purpose. <br />Page 2 of 3 <br />