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bld20120672_Goodmansen-3.docx City of Edmonds TH 121 5 AVENUE NORTH • EDMONDS, WA 98020 • (425) 771-0220 FAX(425) 771-0221 Website: www.ci.edmonds.wa.us PUBLIC WORKS DEPARTMENT Engineering Division Plan Review Corrections Plan Check : Date: # BLD20120672 October 12, 2012 th Project Name/Address: Goodmansen Addition 9704 216 Pl SW Contact Person/Address/Fax: Randy Munson randy.munson@comcast.net Reviewer: JoAnne ZulaufDivision:Engineering During review of the subject submittal, it was found that the following information, corrections, or clarifications would need to be addressed. All Handouts and Standard Details referred to in these comments can be accessed at our website: www.edmondswa.gov by choosing the Government tab and Public Works| Engineering under Departments: Please Note: All Building Handouts do not include updated Engineering Division Requirements. Refer to Engineering Handouts for all Engineering Requirements. 1. Done. 2. Done. 3. Done. 4. Done. 5. Done. 6. Impervious suface calculations do not agree with Lot Coverage calculations or total in the classification chart. Please revise. For example, under lot coverage the residence is noted as 2805 as opposed to Impervious Surface which notes Buildings/Carport and Overhangs as 2235. Please use same categories under Lot Coverage and Impervious Surface for clarity. Also list out each area separately e.g. residence, garage, shed etc. Please separate existing from proposed and note year constructed for all. 9/21/12: I apologize. Beginning my comment in the way I did was confusing. Please read sentences 3 through 6. Lot coverage would never exceed the impervious surface. Thanks. 10/12/12 Comments: 1) The lot coverage and impervious surface calculations are not correct. For example: A The Lot coverage shown for the patio and the carport adds up to a higher amount (428) than the impervious surface coverage for the same area (359). I did not review all the numbers but the numbers are still not correct. Please correct and resubmit. B The impervious surface calculation reflecting the square footage for the 1982 driveway is called out as 775 and the garage is called out as 784. The driveway is DATE FAXED/E-MAILED 7/2/2017 PAGE ___ OF __ 12 definitely larger than the garage. A quick measurement puts the driveway as closer to 1000sf. Please revise calculations, plans and rain garden sizing. I did not review all the lot and impervious surface numbers. Please review and correct. two groups, pre-1977 and post- 2) Separate the impervious surface calculations into 1977 . separately. This means listing the two driveways 3) It is my understanding that you are capturing the run off from the second story addition to account for the post 1977 impervious. Please clearly indicate the portion of the roof that will be connected to the rain garden to assure that amount of runoff equals the calculations used to size the rain garden. Also please add additional language to clearly state the intention of the swapping of impervious surface areas to meet regulations. 4) Call out the actual area required for the rain garden base area (not just the equation). Do not connect footing drain to rain garden. Please revise plan to reflect these comments. 5) The breezeway should be called out as new impervious surface. If not, please note why. 7. Done. 8. Done. 9. Done. 10. Done. DATE FAXED/E-MAILED 7/2/2017 PAGE ___ OF __ 22