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Mukilteo School District — Horizon Elementary School <br />HVAC Upgrades <br />October 2, 2022 <br />Mukilteo School District - Horizon Elementary School <br />HVAC Upgrades <br />222 W Casino Rd, <br />Everett, WA 98204 <br />MCKINSTRY SUBJECT: <br />Attn: Shelly Henderson, Mukilteo SD, <br />McKinstry is pleased to inform you that the work performed at the Mukilteo School <br />District - Horizon Elementary School located at 222 W Casino Rd, Everett, WA 98204 <br />has been completed and all outstanding issues that were found have been identified, <br />recorded, and corrected. <br />MCKINSTRY COMMISSIONING INTENT <br />The intention of McKinstry's commissioning effort is to assure the project's result is <br />an operable, maintainable, and sustainable system. The commissioning process <br />independently validates the systems are engineered, installed, started -up, and <br />functioning per the original project design intent. <br />ACTIONS PERFORMED <br />The following is a list of the actions performed preceding the construction phase of <br />the project. <br />• Developing the CxAlloy site for managing the Cx Process. <br />• Developing Prestart and startup checklists for the following equipment. <br />o Vertical AHU's for classrooms. <br />■ Building B <br />• Four vertical AHUs <br />■ Building C <br />• Two vertical AHUs <br />■ Building D <br />• Twenty -Eight vertical AHUs <br />o Five Fans <br />■ Four Exhaust Fans <br />■ One Relief Fan <br />• Developing Functional Performance Tests for the following systems <br />o AHU Operation <br />o Hot Water Coil Operation <br />o Exhaust Fan Operation <br />CONSTRUCTION PHASE <br />The following is a list of the actions performed during the construction phase of the <br />instry Page 2 of 4 Mariner HS - 205557-012 <br />ae or roe. emmaa <br />