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bld20130055_nimmer-2.pdf 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: # BLD20130055 April 8, 2013 th Project Name/Address: New Single Family Residence 224 12 Ave N Contact Person/Address/Fax: Kurt & Eileen Nimmergut kjnimmer@gmail.com 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 Permit Assistance. Site Plan: 1. 4/4/13 Water line should be shown connecting to the water meter. Also, the stormwater system being installed is an infiltration system. Please replace the current label of “Stormwater Tank” with “Infiltration System” The site plan needs to show the location of all the proposed utilities and stormwater system but does not need to include the details (length, size, etc.). I have attached an example. 2. 4/4/13 Done 3. 4/4/13 Done 4. 4/4/13 Done 5. 4/4/13 Done 6. 4/4/13 Done 7. 4/4/13 Done 8. 4/4/13 Done 9. 4/4/13 Done Stormwater: 1. 4/4/13 There are several places where information was added that covered other necessary information. The area along the west side of the residence and the southwest corner where the patio and sidewalk connect are the primary locations that this is a problem. Please revise to include all necessary information.Rim and invert elevations shall be provided for all connections to verify slopes. This includes connections at catch basins, manholes, drywells, walls and clean-outs. 2. 4/4/13 Done 3. 4/4/13 Done 4. 4/4/13 Understood. The comment was intended to convey that ground water i.e. foundation drains, retaining wall drainage cannot be connected to the stormwater system DATE FAXED/E-MAILED 4/8/2013 PAGE _1__ OF _3_ regardless of the type of stormwater system proposed (LID, detention, etc.) to mitigate the impervious surface run off. The modeling used to determine sizing for the system is not designed to account for groundwater flows. The City of Edmonds accepts tightlining the groundwater runoff to a separate drywell, rain garden or other mitigation system. It is also acceptable to tightline the groundwater directly to the city storm system. Footing drains shall not connect to the stormwater management system. Add separate drywell or other means to collect water from footing drains. 5. 4/4/13 Done 6. 4/4/13 Done 7. 4/4/13 The new proposed location of the pervious pavers has slopes between 15 – 20 %. Please refer to the City’s Low Impact Development Handout E72b page 3 Table 2 and page 4 Table 3. Design configuration allows for slopes from 0 – 5%. Please revise plan to meet City of Edmonds requirements. Please provide detail or cut sheet for permeable pavers proposed. 8. 4/4/13 Done 9. 4/4/13 Done 10. 4/4/13 Done 11. 4/4/13 Done 12. 4/4/13 Done 13. 4/4/13 Done 14. 4/4/13 Done Utilities: Water: 1. 4/4/13 Done 2. 4/4/13 Done 3. 4/4/13 Done Sewer: 1. 4/4/13 Please clarify area on plan at the house clean out where information was added that covered other necessary information. Show 4”side sewer clean out at house connection and 6” clean out at property line. Clean out at property line is required to have a 12” locking cast iron lamphole cover. Please note on plans. 2. 4/4/13 See comment #1. Add rim/invert elevations at both clean outs and call out length of pipe to verify minimum slope of 2% is achieved. 3. 4/4/13 Done. 4. 4/4/13 Done. 5. 4/4/13 Done. Grading/TESC Plan: Erosion Control: 1. 4/4/13 Done. DATE FAXED/E-MAILED 4/8/2013 PAGE _2__ OF _3_ 2. 4/4/13 Done. Grading: 1. 4/4/13 The final floor elevation has been added for the garage slab. 2. 4/4/13 Done. 3. 4/4/13 Done. Please resubmit 3 copies of the revised plans/documents to a Development Services Coordinator. Please contact me at 425-771-0220 if you have specific questions regarding these plan corrections. DATE FAXED/E-MAILED 4/8/2013 PAGE _3__ OF _3_