920 W MARINE VIEW DR 2018-01-02 MF Import

December ?, 1Pe7 John P. Schack Norton Properties 102A West Marine View Drive Everett, Washington 98201 Subject: 220 Nest Marine View Drive Side Sever Connection Dear Mr. Schack: Further to previous discussions crncerninc the sever correction made tY your site contractor, the following should help clarify the City's issues/concerns: • Everett Munlcical Code, Chapter 1A, requires each builelnc to correct to a separate side sever extendirn to the main.. The project's approved site plan requires a sewer connection to be made to the 17" m:in located In West Marine View Drive. A portion of arprovec drawirp No. S-IA is enclosed for your reference. • Your contractor connected to a private onnhole which serves the Public poet Launch. This manhole was installed by the Port of Everett in 1978. Affluent is ct.mped to this manhole which then gravity flows to the public 17" sever main. operation and maintenance has confirmed that the A" lire h"tween the manhole and the 12" sever main contains a "belly", i.e. a reverse flow section which restricts positive flew. The affluent which enters the manhole from the boat launch is pulvertred by the pu'p system. As a result, minimal maintenarce has tern required to the Poe 's side sewer. It is our estimation that the line will experience blockace should tie line receive normal gravity zfflvent fro- your building. Shculd the ling became blocked, It would then he possible for the !cat launch effluent to back up into your buildings. Acceptable resolution of the above would be one of the options noted below. 1. Construct n separate 6" connection to the 12" sever main located In West Marineview Drive per the approved plans. 2. l'perack. the "tellfed" sloe sewer to an S" P.V.C. line cmnstn:eted to prover grade.