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bld20110009_Spasojevick-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 DEVELOPMENT SERVICES DEPARTMENT Planning • Building • Engineering Plan Review Corrections Plan Check :Date: # bld20110009 May 10, 2011 Project Name/Address: Spasojevic SFR 17734 Olympic View Dr. Contact Person/Address/Fax James Bryant jebbryant@frontier.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 referred to in these comments can be accessed at our website: www.ci.edmonds.wa.us under City Government / City Departments /Public Works/ Engineering Division. The Short Plat and Building permit may be reviewed simultaneously however, the building permit will not be issued prior to the recording of the Short Plat. All improvements from the 3/26/10 “Engineering Requirements For Short Plats” included with the preliminary approval documents much be shown on plans. I have attached a copy of this document for your reference. 5/10/11 There have been no submissions or progress on the Short Plat so concurrent review does not apply. Therefore the building permit review will address the lot as a whole, i.e. not as Lot 1 and Lot 2. The Short Plat must be recorded to be legally recognized as two lots. If satisfactory progress is made in the review of the short plat, this review will in good faith address only the issues on the proposed lot 2. Until the property owner responds to the Short Plat requirements and last issued comments, this building permit will include the entire lot. The building permit will not be issued until the Short Plat is recorded. Edmonds Community Development Code does not allow two residences located on the same lot. The Engineering Division requires two separate drawings, a Grading/Temporary Erosion and Sediment Control (TESC) plan and a Drainage/ Utility plan. Please revise submission. th submission was comprised of one drawing, Sheet C1 of 2, titled Drainage SWPPP. 5/10/11 The April 18 A revised C1 of 1 was not received. It appears that the submission is intended to be a revision of the previously submitted C1 of 1. Please clarify and submit the two drawings, a Grading/TESC sheet and a Drainage/Utility sheet as requested above. Please correct sheet titles as appropriate. GENERAL: 1.5/10/11 Done. Shed is labeled “to be removed” on site plan but not on drainage plan. Please revise so plans for consistency. DATE FAXED/E-MAILED 5/10/2011 PAGE ___ OF __ 14 2.5/10/11 Done. If shed is to be removed please indicate the use of the area will be post removal. If to be unused then soil must be compost amended per Stormwater standards. Note on plans. 3.5/10/11 Short plat must be recorded to complete this requirement. Please provide the legal document for the ingress/egress/access easement located along the south property line. TESC/GRADING: 4.5/10/11 Partial. Include details for measures consistent with City of Edmonds standard details or cut and paste the City’s details onto your plans. Erosion control notes must be included on civil sheet for TESC. Include all tesc measures, silt fence, construction entrance and filter socks for the catch basins. Include details for proposed measures consistent with City of Edmonds Standard details for erosion control. 5.5/10/11 Not done. Please add to all structures on the civil sheet for Grading. Bottom of footing shall be noted for all “new” structures to verify grading calculations. 6.5/10/11 Done. 7.5/10/11 Done. DRAINAGE 8.5/10/11 Not done. See note at opening of these comments. The previous discussions with the City discussed the drainage situation in the case if the short plat was recorded. Currently there is only one lot therefore all impervious surface created post 1977 is to be considered with the drainage plan. When short plat is recorded the post 1977 impervious surface up to 2000sf of “lot 1” will not be require mitigation (the greenhouse and the walkway). Also, there are no “permitted” structures or other impervious surface on the area labeled “lot 2”. Please use the terms as noted, see E72 for calculation structure. Please replace the “non-exempt impervious area” calculations and replace with impervious surface calculations for the entire property. Each impervious surface area should include square footage and year constructed. Include existing, new etc. 9.5/10/11 Not done. See #8. Walkway between proposed “lot 1 and lot 2” not added. Please add gravel driveway, all sidewalks or walkways, concrete, gravel or pavers, to the impervious surface calculations. 10.5/10/11 Parital. Please specify the impervious surface (structures, other and the approximate square footage) that is contributing to the runoff into the detention system. Please address lot in full (no lot 1 or 2) Grass lined swale shown at se corner of lot 1 feeding into the detention system. Is the swale existing? Where is this runoff coming from? 11.5/10/11 Not done. See #8. All impervious surface on Lot 1 must be included in the impervious surface calculation since the detention system is to serve both lots. (see short plat requirements). 12.5/10/11 Not done. This permit is for all the non-permitted structures. The review is approached as if the work was not completed. Please consider all areas as proposed construction when answering these comments. See #8 and E72 Handout.. All existing structures in the area of “lot 2” are not exempt as they were constructed after 1977 and do not have any kind of flow control structure in place. Please add these structures to the impervious surface calculations and remove “exempt” from the structure labels on the drainage plan. 13.5/10/11 Not done. The amount of impervious surface for the structures (house, etc) must include the eves. DATE FAXED/E-MAILED 5/10/2011 PAGE ___ OF __ 24 14.5/10/11 Not done. See #12. The following is an example of how to breakdown the impervious surface calculations. Existing Impervious: Roof outline: xxxxx Year built: xxxx Driveway: xxxx xxxx Decks: xxxx xxxx Total: xxxxx Proposed Impervious: Roof outline: xxxx Deck: xxx Walkway: xxx Total: xxx 15.5/10/11 Not done. A rough calculation of impervious surface as shown on the submitted plans is around 4500 sf. This total does not include the eves of all structures. Please recalculate impervious surface and address comment. In addition, the sizing of the system shown on the resubmitted plans appears to be sized using pre-2010 Stormwater Code (Effective 6/1/10) requirements. Please see attached sizing information and provide a section of the system as shown in sizing information with all elevations etc included.. Type II cbs are required for detention systems using 24” pipe. Confirm elevations for existing catch basins in right of way. Fall is shown as negative between the two. If the total impervious surface construction after 1977 is over 5000sf your drainage plans will need to be designed by an engineer and submission must include all drainage sizing calculations. 16.5/10/11 Not done. Sheet A1.0 does not include impervious surface calculation. Update with revised calculations. Impervious surface calculations should be included on the site plan. See Building Division Handout B#57 for all site plan requirements. UTILITIES: 17.5/10/11 Done 18.5/10/11 Done. 19.5/10/11 Done. 20.5/10/11 Done. . 21.5/10/11 Note added. Please change line type (currently OHP) to indicated underground requirement. Please note on plans that all utilities shall be moved underground. DRIVEWAY AND ACCESS EASEMENT 22.5/10/11 Done. 23.5/10/11 Please call out dimensions. Show proposed driveway from property to the street. Call out dimensions and materials. 24.5/10/11 Done. 25.5/10/11 No longer applicable. . 26.5/10/11 Not done. Adding dimensions (in addition to square footage) to the driveway on plans will answer this question. And a note saying “no other areas will be used for parking”. Please confirm that a portion of driveway between the east property line and west of the driveway portion called out as pavement will continue to be gravel. If not, please revise plans. Where will cars be parked? Will there continue to be parking areas on the property to the north of the driveway or any other areas on the DATE FAXED/E-MAILED 5/10/2011 PAGE ___ OF __ 34 property? If so, please show on plans as a parking area and label with material and dimensions. Add area to impervious surface calculations. Please resubmit a written response to all comments and 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 5/10/2011 PAGE ___ OF __ 44