607 RIVERSIDE RD 2020-09-18 - Laserfiche WebLink

' PORT RESPONSE: CB and associated pipes that have been demolished within the property will be removed from this sheet. 2. SDMH #103 and subsequent downstream manholes on C4.6 must have sealed and locking lids as this line will be pressurized under certain operating conditions. PORT RESPONSE: Information has been added to the detail sheet for the manholes(C5.2)to specify that they are pressurized with locking cover and anchors. 3. The storm drain line from Lot 5 must be labeled as private and must be located within a private drainage easement. PORT RESPONSE:The storm drain line has been labeled as private and a 10' private drainage easement has been added to the plans. viii. C4.6: 1. There is no indication on the plans that storm drainage manholes 100 —103 are pressurized manholes and will require sealed lids... PORT RESPONSE: Information has been added to the detail sheet for the manholes (C5.2)to specify that they are pressurized with locking cover and anchors. 2. There should probably be some form of backwater valve inserted somewhere in the Lot 5 outfall to protect the line from tidal fluctuations. PORT RESPONSE:A heavy duty flap valve has been added to the pressure manhole detail on sheet C5.2,and has been specified to be installed only on SDMH#100. 3. In part because the storm drainage outlet pipe for Lot 5 is private, and will require a private easement, it should not be located where the public trail will be constructed. At this time, there appears to be a conflict between the location of the pipe and manholes and the proposed location of the trail within the 16' public access easement on Tract D. Are preliminary plans for Trail F available? How will this issue be handled in the future? Also, it appears the desire to stay 200' back from the shoreline might be discouraging the optimal location of the pipe and access structures. If staying 200'back is due to permitting issues, would it be possible to partially construct the outfall line, and wait to hook it up to the outfalls when the trail is constructed? Or require Lot 5 to complete the line? PORT RESPONSE: Elise discussed with Jane Z. on 5/2,the surrounding landscape is being used for mitigation purposes and it is easier to maintain within the pathway.The Port will need to draft up an easement for the City depending on the purchaser of the Lot. 4. The comments below were generated from this project's Traffic Reviewer. If you have any questions regarding these comments, please contact Michael Brick with the City of Everett Public Works Department (425-257-7790 or MBrick@everettwa.gov). a. Show ramps on civil drawings. Locations as marked on landscape plans are acceptable, but C4 series sheets should also show them.