931 BROADWAY TEUTSCH STUDENT HOUSING 2018-03-07

PUBL/C WORKS ..�,_,�, iii. The source of power for the pump needs to be shown on the drainage plan, and the design of the electrical feed and connection must be approved as part of the building pernlit. iv. If the stormwater pump fails on this site, there will be no controlled stormwater discharge from the site. For these types of situalions, City policy requires a duplex pun1�� station that has auxiliary power, including an automatic transfer switch. v. Emergency c�verflow requirements must be rnet in the event the pump system fails (City 2010 SWMM, Chapter 2.9 of Volume III) and must be discussed in the report. "I'he emergency overflow location must be shown and identified on the plans. vi. The location of the pump panel must be shown on the plans. The pump panel must have a visible and audible high-level alarm with push-to-silence switch. b. Storm system improvements in lOth Street (sheet COS): i. City standards require a minimum 12" diameter for storm drainage pipe located in the right-of-way. ii. City standards require a catch basin at pipe junctions — the core tap shown at key note 58 does not meet City standards, which require a catch basin at pipe junctions. c. Alley runoff(sheet COS): i. As cLu•rently shown, the allcy is sloped to drain to �vCC propei�ty t�� ihe east and a rocl< pad is shown at the northeast corner of the portion of the alley that will rcm�iiil im}�cr�°ious. 'l�his ��rc�posal is un.iccc��ta��lc unlcss 1?vC'C �r�iut� tl�c C'it�� formal drainage easement to drain alley runoff into EvCC property, particularly for the impei•vious portion of the alley. d. Pump notes/detail (sheet C07): i. Drawings specific to the pump installation on the site need to be provided. In order to reduce possible confusion, any of the more general or alternate information that typically comes on standard pump drawings. and which doesn't apply to this particular installation, should be removed or crossed-out. ii. The notes located under the storm drainage pump specifications table should all be deleted—the City will require specific information to be provided in the report and on the plans prior to approval of the plans. iii. The majority of the pump general notes may be deleted from sheet C07 as they guide the design of the system — and the current design shows compliance with the pump general notes, with few exceptions. However, Note 4 should be retained and changed to read "An electrical permit is required for the electrical hookup of the pump system."; Note 10 should be retained and changed to read "City of Everett" instead of "King County"; Note 15 should be retained and changed to read "A visible and audible alarm system is required for the pump system."; and Note 16 should be retained and changed to read "Pump systems are subject to City of Everett inspection". Page 3 of 4