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0 <br />Sabrina Fandler <br />From: Sabrina Fandler <br />Sent: Monday, April 29, 2019 10:00 AM <br />To: Paul McKee; joel@haackbrothers.com <br />Cc: Tony Lee; Benyam Stephanos <br />Subject: RE: Permit c1812-004 <br />Attachments: Construction Erosion & Sedimentation Control Plan for Small Projects.docx <br />Hi Joel, <br />The typical process is to review the building permit one department at a time as each department's reviews build off <br />one another. If there is a public works permit with drainage mitigation triggered, public works typically runs a separate <br />concurrent review to save time, and this is marked at intake when drainage reports, separate civil plans, and a public <br />works permit application are submitted. However, if the project does not trigger drainage mitigation and the public <br />works scope only consists of writing a permit for the installation of pavement, public works will get the project last when <br />everyone else has approved so we can write the public works permit and sign the approved plans. <br />It looks like this project got held up in building review for a long time, then had pretty quick reviews after building <br />approved. At intake it was marked to route to public works after the other departments, and was noted to check the <br />subdivision to see if drainage has already been done. I assume this was the case since no other public works permit <br />application items were submitted. However, now that I am looking at the file further, there is 2,874sf of proposed hard <br />surface, which triggers drainage mitigation, particularly low impact development such as infiltration trenches, <br />permeable pavement, or rain gardens. This should have had a separate public works permit application turned in with a <br />drainage report, erosion control plans, and drainage plans in addition to the overall site plan. <br />In order for us to continue our review, we will need you to submit the appropriate permit review material for a public <br />works permit including a completed public works permit application, drainage report addressing Minimum <br />Requirements 1-5 per Ecology's 2014 SWMMWW, erosion control plan with the attached document filled out or <br />addressed in the drainage report as Minimum Requirement 2, and drainage plan. We will use the existing/approved site <br />plan with utilities for that portion of the required submittal documents. If the site runoff was previously mitigated for <br />through the drainage report for the subdivision, please have the engineer who did that report prepare a quick memo in <br />place of the drainage report that addresses how drainage was accommodated for, existing capacity, and how it can <br />accommodate the proposed additional capacity. Looking at the subdivision on our GIS maps, it appears as though there <br />is a road network drainage system that discharges to a detention vault, but our records do not show any of the lots <br />connecting to the right-of-way drainage system. If the lots are not being served, the proposed lot will not be able to be <br />served either and will need to address drainage on -site through low impact development mitigation measure per <br />Minimum Requirement 5. <br />This should still be a fairly quick review by the public works reviewer when these items come in. We will write a permit <br />for the proposed hardscape, erosion control measures, and drainage mitigation measures. As long as you follow the <br />instructions in the attached construction erosion and sedimentation control plan, then show them on a site plan, your <br />erosion control will be approvable, and then it is a quick review for drainage compliance with the Ecology manual <br />requirements. <br />Please let us know if you have any questions or if we can be of further assistance. <br />Thank you, <br />