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�4 <br />2375 130Ih. Avenue NE <br />Suite 200 <br />Bellevue <br />Washington 98005 <br />JMN James M. <br />Consulting Engineers, Inc. <br />� November 5, 1990 <br />Ciry of Everett <br />Building Department <br />3200 Cedar Street <br />Everett, Washington 98201 <br />AaenCon: Mr. Tim Tyler, <br />Building O�cial <br />Subject: Alderwood Pump Stadon No. 2., <br />Northwest Energy Code Compliance <br />Dear Mr. Tyler: <br />Telephono <br />(206) 8814100 <br />: 6�_ <br />This letter has been prepared to indicate compliance of tt±e subject building pmject with the <br />Northwest Energy Code (NWEC). <br />On October 29, 1990 I met with Mr. Daniel J. Anderson, Energy Udlization Engineer with <br />the Snohomish Counry PUD No. 1,regarding compliance of our project with the NWEC. <br />Mr. Anderson inforn�ed me that although th� PUD will check and certify compliance for <br />residendal projects, they do not certify compliance for commercial/industrial type projects. <br />However, he did spend ame with me to review those areas of the code which apply to our <br />project. <br />The building proposed for construction is a water pumping stadon, which would be <br />classified as occupancy group B-4. However, the building is normally not occupied, but <br />will be visited approximately once a day for rypically less than a 30 minute period each <br />visit Under norm�tl condidons the building will be heated only to a temperature of 49 ° F. <br />Based on paragraphs 101.3.1 and 101.3.1.2 of the NWEC, this building is exempt from <br />the build envelope requirements of the code. <br />A lighdng power budget and actual lighdng loads for the building have been prepared and <br />are pnesented as Attachment A. These calculations show that the planned lighting exceeds <br />the lighting budget allowed by code by appmximately 515 watts, or 15 percent. However, <br />upon further review, we have deterntined that there are special circumstances which <br />wamdnt the lighting loads as further described below. <br />The strvcture is tall and has a travelling bridge crane to allow maintenance of equipment in <br />the pump station. T'herefore the main lighting fixtures must be mounted at a height of <br />nearly 28 feet above the floor surface. T'he NWEC allows lighdng loads of 1.0 watts/sq. <br />ft. for pump stations (in B-4 cecupancy) which would be adequate for normal lights at a <br />height of 10-15 feet above the floor. Since lighdng requirements increase based on the <br />