2006/06/07 Council Agenda Packet

• 9 Project: Water Filtration Facility Facility Improvement Project • • Change Order no.3 Change Order Effective Date: January 30,2006 Exhibit A—Description of Changed Work Modify the dollar amount under existing bid item#4–"Additions and Modifications to the Contract",with a$10,000.00 increase for work change directive#45. Work Change Directive #45. Revise the Alum/Polymer Storage Building insulation from 5-inches of International Cellulose Inc. K-13 to 4-inches of Icynene and 1-1/4 inches of International Cellulose Inc. Ure-K. Lump sum price to include all costs complete, including scaffolding. JUSTIFICATION: Contract plans called for the ceiling and walls of the Alum/Polymer Storage Building to be insulated with K-13 Spray-On-System as manufactured by International Cellulose Corporation or acceptable substitute. Insulation was to be applied in accordance with the manufactures recommendations. The insulation subcontractor proposed a rigid insulation board as a substitute for the Spray-On-System. Water Filtration Plant has experienced rat infestation with rigid board insulation, thus the proposed substitute was rejected and the contractor directed to proceed with the K-13 Spray-On-System. K-13 Spray-On-System was applied to the ceiling and walls.The K-13 product within a short period of time failed to adhere to the ceiling and fell to • the floor of the building. After significant research and time the City of Everett chose to have installed 4-inches of Icynene foam insulation which required topping with 1- 1/4 inches of International Cellulose Inc. Ure-K for fireproofing. Hisey Construction forwarded a$16,681.67 additional cost request, on behalf of its insulation subcontractor, for installation of this revised foam insulation and fire proofing system, for consideration by the City of Everett. The insulation subcontractor's position was that they#1 requested an alternative insulation method be used,that was rejected and, #2 the ceiling they had sprayed the K-13 Spray-On- System to was much to flexible and moved,(expanded and contracted) with temperature fluctuations causing the failure.Note: Work change directive #11 changed the exposed roof fastener system to a concealed fastener system at the request of plant staff,as existing buildings,which have the exposed fastener system, leak. Construction management staff,Hisey Construction, and its insulation subcontractor met to negotiate costs for this added insulation work and settled on$10,000.00. Work change directive was written and signed November 7, 2005. 23 Exhibit A Page 3 of 4