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BLD20150278_Le_ENG1.pdf City of EdmondsBLD20150278 & 0279 TH 121 5AVENUE NORTHEDMONDS, WA 98020 • (425) 771-0220 FAX (425) 771-0221 Website: www.ci.edmonds.wa.us PUBLIC WORK DEPARTMENT Planning • Building • Engineering Engineering Plan Review Comments PermitApplication:Date: #BLD20150278 & 0279April 21, 2015 Project Name/Address: Le –7317 Lake Ballinger Way Contact Person/Address, Fax or E-mail: David Pagel –marlin.g@gabbertarchitects.com Reviewer: JENNIFERLAMBERTDivision: ENGINEERING During review of the subject submittal, it was found that the following information, corrections, or clarifications would need to be addressed. All Handouts referred to in these comments can be accessed at our website: www.edmondswa.govunder City Government / Development Services Department / Engineering Division then scroll down to Handouts: GENERAL 1)Provide a traffic control plan. SITE PLAN 1)As changes are made to other plansheets, please revise this sheet as needed. GRADING PLAN(C1.0) 1)Please revise the title ‘Grading Plan’ to ‘Grading and Erosion Plan’. 2)Please show any erosion control measures on this plan sheet (i.e.silt fence, Construction entrance, etc.). 3)Please reference the City Standards for all erosion control measures. 4)Please show the silt fence located as far north as allowed by the GeotechnicalReport and as needed for the development. DATE E-MAILED4/21/2015PAGE (1) City of EdmondsBLD20150278 & 0279 TH 121 5AVENUE NORTHEDMONDS, WA 98020 • (425) 771-0220 FAX (425) 771-0221 Website: www.ci.edmonds.wa.us PUBLIC WORK DEPARTMENT Planning • Building • Engineering Engineering Plan Review Comments STORMWATER SITE PLAN(C2.0) General 5)Please revise the title ‘Stormwater Site Plan’ to ‘Stormwater and Utility Plan’. 6)Please show all the utilities on this plan (water, sewer, storm, gas,phone, power, etc.) 7)Please add a note to the plans that state the existing utilities will be removed and/or capped under the demolition permit(BLD20150277). WATER 1)It appears that a fire sprinkler system is required for this property.Typically if there is an existing water service line from the watermain to the meter it will not be the appropriate size and a new tap will be required. a.Please show the water service line from the meter to the house. b.Please add a note that a 1” meter is to be installed. c.Please show a 1-1/2”line to be installed (as required for a combination fire anddomesticservice line). d.Please label the pipe material andnotetracer wireto be installed on the water service line. SEWER 1)Please note ifthe existing side sewer and lateral is proposed to be reused, the sewer will need to be inspected by the City’s Public Works department to determine if it can be reused. Contact Edmonds sewer division, 425-771-0235. a.If the lateralcannot be reused, anew connectionwill be required. The connection at the main will need to be a romac inserta teeinstalled by the contractor (not the City of Edmonds). 2)The sewer lateral (the portion from the main to the property line) will need to be straight from the mainline to the property line. a.Please revise the plans accordingly. DATE E-MAILED4/21/2015PAGE (2) City of EdmondsBLD20150278 & 0279 TH 121 5AVENUE NORTHEDMONDS, WA 98020 • (425) 771-0220 FAX (425) 771-0221 Website: www.ci.edmonds.wa.us PUBLIC WORK DEPARTMENT Planning • Building • Engineering Engineering Plan Review Comments 3)Please label the pipe material and size. The sewer lateral must be 6”. Once on private property the sewer may reduce to 4”. 4)Show a 6” cleanout at the property line. Please add a note that the 6” cleanout at the property linewill have a 12” cast iron lamphole cover with ½” hexbolts. 5)Show a cleanout located within 2’ of the house, at any 90° bend, when there is less than 3’ between two 45° bends, and when there is more than 100’ between cleanouts. 6)Please show the invert elevations at the main and the house so that slope and coverage can be verified. If the slope of the pipe exceeds 20% the pipe will need to be anchored. STORM 1)The proposed stormwater plan shows a raingarden to be installed as the stormwater management system. However, theGeotechnical Report submitted byGeotech Consultants, Incdated 8/12/14 states the following, “Infiltration of stormwaterat the site is not feasible due to the shallow groundwater the exists below the site”. Therefore, the City cannot approve the proposed system. a.Please propose a stormwater managementsystem that is consistent with both the City of Edmonds standards and the Geotechnical Report. b.The proposed amount of impervious area exceeds 5,000 sqft, so the system will have to be designed by a licensed engineer. Please providedesign calculations for theproposed system. c.There was recently a new single family residence constructed at 7109 Lake Ballinger Way. You may want to review the street file (found in the developmentservices department of City Hall)to see the system that was approvedto assist you as you design the stormwater management system for this site. d.Once we have received revised drawings and design calculations, Engineering will continue the stormwater review. 2)Please remove the existing lot coverage from the plans. 3)Please revise the proposed lot coverage to state proposed impervious area and revise as needed. 4)Please have the engineer address where the footing drains are permitted to discharge to. 5)Please provide rim elevations for all pipes within the catch basinsso that we can verify pipe coverage and slope. DATE E-MAILED4/21/2015PAGE (3) City of EdmondsBLD20150278 & 0279 TH 121 5AVENUE NORTHEDMONDS, WA 98020 • (425) 771-0220 FAX (425) 771-0221 Website: www.ci.edmonds.wa.us PUBLIC WORK DEPARTMENT Planning • Building • Engineering Engineering Plan Review Comments 6)Please show directional flow areas on thedriveway so that it is clear that the surface water runoff from thedriveway is being collected and discharged to the onsite stormwater management system. DRY UTILITIES 1)Please show all proposed dry utilities(gas, phone, cable, etc.)on the plans so that utility separation can be verified. 2)Please note that all utilities must go underground. Please resubmit 3 copies of the revised plansand associated documents with a written response to each item to a Permit Coordinator. Please contact me at 425-771-0220ext 1321or by e-mail at if you have specific questions regarding these plan corrections. jennifer.lambert@edmondswa.gov DATE E-MAILED4/21/2015PAGE (4)