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HomeMy WebLinkAboutC_Response to City of Renton_docxSAZEI Design Group, LLC 6608 110th Ave. N. E. Tel: (425) 214-2280 Kirkland, WA. 98033 October 25, 2024 Jill Ding Senior Planner City of Renton Community & Economic Development Planning Division 1055 South Grady Way, Renton, WA 98057 Project: Renton Highlands Short Plat / LUA24-000078 Project Address: 5815 NE 8TH ST RENTON, WA 98059 Parcel #: 112305-9068 Subject: Response to City of Renton Plan Review Comments Dear Jill Ding, This is in response to your plan review comments revived via email dated October 17, 2024. Based on review of the comments, we have prepared and formulated our response to each comment as listed in your letter. Please refer to the red comment response on the attached correction letter to view the responses. If you have any questions or require further clarifications, please feel free to contact me at (425) 214-2280, or via e-mail at hamidkorasani@yahoo.com . Your swift response to this matter is greatly appreciated. Sincerely, SAZEI Design Group, LLC Hamid Korasani Hamid G. Korasani, P. E. Principal From:Hamid Korasani To:Richard Deccio Subject:Fw: Renton Highland Short Plat Corrections LUA24-000078 Date:Thursday, October 17, 2024 4:03:48 PM Attachments:image002.png image003.emz image004.png Hi Richard, Please see attached. Many Thanks. Hamid ----- Forwarded Message ----- From: Jill Ding <jding@rentonwa.gov> To: Hamid Korasani <hamidkorasani@yahoo.com>; Amin Gilani <amingilani@gmail.com>; Clark Close <cclose@rentonwa.gov>; Nathan Janders <njanders@rentonwa.gov> Cc: Daniel Finnigan <dansfinnigan@hotmail.com>; Yong Qi <yqi@rentonwa.gov>; Altaf GILANI <ultimahomesllc@gmail.com> Sent: Thursday, October 17, 2024 at 07:46:02 AM PDT Subject: RE: Renton Highland Short Plat Corrections LUA24-000078 Good Morning, Thank you all for taking the time to meet yesterday. I think that the meeting we had was productive and hopefully provided clarification of the outstanding items that needed to be addressed before the short plat review could move forward. I have put together a summary of outstanding comments that need to be addressed, please see the comments below: Fire Comments: 1. A cul-de-sac turnaround is the code requirement to provide emergency access to the proposed short plat. The Fire Department would consider granting a variance to this requirement, provided a hammerhead turnaround is provided at the intersection of Pasco Pl NE and NE 8th Street and all individual homes within the short plat are equipped with fire sprinkler systems. Engineering Comments: 1. The project site drains to both the Lower Cedar River and May Creek basins. To comply with Core Requirement #1 of the City of Renton Surface Water Design Manual (RSWDM), the applicant would need to demonstrate that runoff will be mitigated for within each drainage basin as per the project site’s topography. 2.Infiltration tests for the project site prepared by a licensed civil/geotechnical engineer needs to be provided for both Basins, which will be used to evaluate if the site is suitable or unsuitable for infiltration per 2022 RSWDM. 3.The downstream analysis only discusses the Cedar River/Lake Washington watershed however, it needs to assess both separate drainage basins (Lower Cedar River and May Creek) within the watershed. 4.The TIR would need to be revised to include a discussion on how the proposed pump design complies with the durational flows for “matching forested site condition” as specified in Core Requirement #3. 5.The setback to tract lines for vaults is 5-feet per Section 5.1.3.1 of the 2022 RSWDM. The northwest corner of the vault is shown crossing a tract line (into the shared driveway tract), this encroachment would need to be removed and the facility would need to demonstrate compliance with the required 5-foot setback requirement. 6.Lot impervious surface coverage is calculated individually for each lot. Per Section 1.1.2.1 of the 2022 RSWDM, the minimum impervious surface coverage for a residential subdivision shall be assumed as 4,000 SF or the maximum allowed per RMC 4-2-110A, whichever is less. The modeling within the TIR would need to be updated to comply with this requirement. 7.After confirming with Nate Janders and Section 1.2.3.1.B of Minimum Required performance in 2022 RSWDM, the replaced impervious surface (down to base course or bare soil) within the NE 8th Street that is not fully dispersed as specified in Appendix C is considered as target surfaces, and shall use forested condition as existing to size the detention facility. 8.The civil construction plan set and TIR need to be revised to match the updated site plan with hammerhead turnaround required by Fire Authority. We look forward to receiving the updated short plat submittal items so that review of your short plat can continue.