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HomeMy WebLinkAboutC_On Hold Letter_Sierra Homes Short Plat_230124_v1 January 24, 2023 Ian Dahl Encompass Engineering & Surveying 165 NE Juniper St, Ste 201 Issaquah WA 98027 SUBJECT: "On Hold" Notice PR22-000352 Sierra Homes Short Plat / LUA22-000427 Dear Mr. Dahl, The Planning Division of the City of Renton accepted the above master application for review on January 4, 2023. During review of the submitted project documents, staff has determined issues with the Technical Information Report (dated November 2, 2022) that need to be addressed in order to proceed further with the review. Please see the attached memorandum prepared by Nathan Janders, Development Engineer, dated January 20, 2023 for a description of items needing to be addressed before review may continue. In addition to the issues noted in the memo, the applicant shall address the following items: At this time, your project has been placed “on hold” pending receipt of the updated project documents identified above and in the attached memo. The maximum time for resubmittal shall be within ninety (90) days of this notice, unless an extension is approved by the Current Planning Project Manager. Please contact me at (425) 430-7219 if you have any questions. Sincerely, Alex Morganroth Senior Planner cc: Awesome Yah Church/ Owner(s) Dan Finkbeiner/Applicant Parties of Record Attachment: Memorandum prepared by Nathan Janders and dated January 20, 2023 DEPARTMENT OF COMMUNITY AND ECONOMIC DEVELOPMENT M E M O R A N D U M DATE: January 20, 2023 TO: Alex Morganroth, Senior Planner FROM: Nathan Janders, Development Engineer SUBJECT: Sierra Homes Short Plat 702 Nile Ave NE LUA22-000427 I have reviewed the application for the Sierra Homes Short Plat project located at 702 Nile Ave NE and have the following comments: The following comments represent additional information or corrections that are required to be made: 1. In the TIR a flow control facility exemption is claimed for core requirement #3. However, the modeling used to support the claim must be revised for the following items: a. The WWHM model used an hourly timestep, a 15 minute timestep shall be used. b. The WWHM model has a target surface area of 0.195 AC which is equal to the new impervious surface only. However, per section 1.2.3.1.B – Target Surfaces – 2 the new pervious surface shall be assumed to be the entire lot area. The total lot area is 0.735 AC and thus both the predeveloped and developed conditions should have an area equal to 0.735 AC. c. The WWHM model appears to use flow control facility sizing credits, however, per table 1.2.9.A privately maintained BMP’s are not allowed to receive facility sizing credits unless using f ull dispersion or full infiltration (neither of which are indicated as feasible). d. If a flow control facility is found to be required, then the applicant shall demonstrate that there is no downstream drainage problem to the wetland; See section 1.2.2.1.1 – Potential Impacts to Wetlands Hydrology Problem of the RSWDM for further information. 2. The TIR appears to be based on the 2022 Renton Surface Water Design Manual (RSWDM) however there are references to the 2017 RSWDM. The report shall be updated for compliance with the 2022 RSWDM. The following comments represent additional information or corrections that should be made when considering site layout: 1. All existing and proposed utility lines along the property frontage must be relocated underground per RMC 4-6-090. There is an existing utility pole along the properties Nile Ave NE frontage that shall be removed and those services spanning to the north and south shall be installed underground to the next utility pole. Those utilities that service houses on the west side of Nile Ave NE from this span may remain overhead, however, only up to the serviced properties connection with the ROW; a new service pole may be installed to retain overhead service and that portion of the service within the ROW shall be installed underground. Further the subject utility pole contains an existing streetlight, a new streetlight conforming to COR std. plan 117.1 shall be provided.