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Sabrina Fandler <br /> From: Jane Zimmerman <br /> Sent: Thursday, July 28, 2016 10:10 AM <br /> To: Sabrina Fandler <br /> Subject: Student housing proposal at 931 N Broadway <br /> Hi Sabrina— <br /> Please see below for my review comments on the project submittals <br /> Thank you, <br /> Jane <br /> Jane Zimmerman, Sr. Engineer <br /> City of Everett Public Works Department <br /> phone: 425-257-8885 fax: 425-257-8882 <br /> e-mail:izimmerman(a�everettwa.qov <br /> REVIEW COMMENTS, 931 BROADWAY <br /> Pump related: <br /> The pump design, selection, and specification selection information must be provided in both the report and on the <br /> plans for the initial installation. If/when one of the pumps fails in the future, there must be enough information given to <br /> allow the City's inspector and the site owner to identify a suitable replacement pump. <br /> Pump calculations are required showing the determination of the total dynamic head. In addition,the system curve (the <br /> ��ump's total dynamic head versus the flow rate in the system) should be �lotted on the selected pump's characteristic <br /> curve in order to show the pump's operal:ing point. <br /> The source of power for the pump needs to be shown on the drainage plan, and the design of the electrical feed and <br /> connection must be approved as part of the building permit. <br /> If the stormwater pump fails on this site, there will be no controlled stormwater discharge from the site. For these types <br /> of situations, City policy requires a duplex pump station that has auxiliary power, including an automatic transfer switch. <br /> Emergency overflow requirements must be met in the event the pump system fails (City 2010 SWMM, Chapter 2.9 of <br /> Volume III) and must be discussed in the report. The emergency overflow location must be shown and identified on the <br /> plans. <br /> The location of the pump panel must be shown on the plans. The pump panel must have a visible and audible high-level <br /> alarm with push-to-silence switch. <br /> Storm system improvements in 10th Street (sheet C05): <br /> City standards require a minimum 12" diameter for storm drainage pipe located in the right-of-way. <br /> City standards require a catch basin at pipe junctions—the core tap shown at key note 58 does not meet City standards, <br /> which require a catch basin at pipe junctions. <br /> 1 ✓�/ <br />