812 35TH ST 2022-03-07 - Laserfiche WebLink

17. A performance guarantee is required on the public improvements for an amount not less than 120% of the cost of construction for those improvements. Upon completion of the work,a 1-year warranty bond in the amount of 10%of the construction costs for all public improvements shall be submitted to the City and shall run for one year from the date of final approval of the public improvements.The performance guarantee is released upon completion of the public improvements and receipt of the warranty bond. 18. A 2-year Warranty Bond in the amount of 10%of the construction costs for all Stormwater Infrastructure shall be submitted to the City prior to final approval/close out of the permit. 19. As-builts of storm sewer,sanitary sewer,and water systems are required to be submitted per current City of Everett Design and Construction Standards and Specifications for Development manual. 20. A fire hydrant(or hydrants)capable of providing the required fire flow must be located within 350 driving feet of all residences in the proposed short subdivision. Location(s)of the hydrant(s) must be approved by the City Fire Marshall. The hydrant(s)must meet City specifications. Look at the fire marshal's comments for fire department comments. 21. Stormwater shall be managed in accordance with current City of Everett Standards.Adherence shall include the following: a. The project is in the combined sewer system and Interim Policy 2-11 for Surface Water Management in the Combined Area applies. b. Minimum requirements 1-9 are required to be evaluated for this project. MR#6 is exempt per Interim Policy 2-11. Infiltration facilities are not allowed for this site. c. The project adds more than 5,000sf of impervious area,therefore flow control (detention) is required, per the City's 2010 Stormwater Management Manual. d. Provide maps showing the site boundary with existing and proposed coverage areas(lawn, pasture, roof, etc.) used for input into the model. e. The downstream combined sanitary and storm sewer system is capacity constrained and has experienced sanitary sewer overflows in the fast(overflow at manholes,flooding to the surface). Direct discharge of surface water runoff to the combined system will not be allowed. f. The downstream analysis needs to be revised to state that the flow in the Tulalip line is directed to Lift Station 2,located in the Port property west of Bond Street,which pumps the flow to the wastewater treatment plant for treatment prior to discharge to the Snohomish River/Puget Sound. Lift Station 2 overflows to Puget Sound Outfall no.7,which is a combined sewer outfall. g. The height of the orifice in the modeling input needs to reflect the outlet being raised 6" above the bottom of the detention pipe(bottom 6"of detention pipe is sediment storage). h. The detention pipe profile needs to be expanded to show the proximity to the adjacent proposed structure and the bearing zone from the structure's footing to the detention pipe to ensure that there is no surcharge loading on the detention pipe. Revise the drainage report and resubmit for review during the construction permitting process. 22. Stormwater features,facilities,and conveyance serving the individual lots shall be private upstream of the detention facility. Roadway conveyance structures and the detention facility itself shall be public with an easement granted to the City of Everett for maintenance. Page 11 of 12 SS 19- 01,Rev II 19-002