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.' ~ ~HILLS MEMORANDUM . DATE: December 14, 2004 TO: Scott Clark, Community Development Director Michelle Wolfe, City administrator FROM: Dave Scherbel, Building Official SUBJECT: City Hall through wall flashing repair Update The City Council authorized staff two hire a professional testing company, (Architectural Testing) too do water leak testing to determine the cause of the continual leaking in the lobby ceiling and council conference room. Architectural Testing has determined that the cause of the continual water infiltration was due to improper through wall flashing installation and generally, poor workmanship. The flashing was not installed per contract specifications nor industry standards. Since the cause of the water infiltration was so apparent, the contractor on site, Building Restoration, who did the removal of the stone, was hired to do the repairs for the chimney area only. The contractor was able to do the repairs at a reduced amount because the wall already had been removed to do the water leak investigation. The contractor.~ has since completed the repairs, meeting industry standards per details supplied by Architectural Testing, with quality workmanship. . Response Due to the results of the report, staff has also obtained two quotes to repair the through wall flashing in areas known to have been improperly installed. The quotes were separated into two parts. The first quote was to redo the through wall flashing above the council conference room, and the second quote was to redo the through wall flashing in selected areas at the base of the wall, just above the grade line. This area has been previously grouted in certain areas to help stop the water infiltration. While the majority of the water infiltration (flooding) has been reduced, the City still experienced some water infiltration this past year. The quotes the City received were from Building Restoration and Kraus Anderson. Building Restoration quoted $10,820.00, and Kraus Anderson quoted $12,040.00 to repair the area above the council conference room. The second quotes to repair the through wall flashing at grade level were $224.34 per lineal foot by Building Restoration and $264.61 per lineal foot by Kraus Anderson. The total price may vary dependent upon the actual footage of through wall flashing needing to be replace. At this time staff anticipates approximately 210 lineal feet to potentially still be leaking. This would .