The contractor shall repair the roof at Bldg 771 and the rain gutters and downspouts at Bldg 783, CFAC, according to the provided plans and specifications. All work shall be completed within 120 calen... The contractor shall repair the roof at Bldg 771 and the rain gutters and downspouts at Bldg 783, CFAC, according to the provided plans and specifications. All work shall be completed within 120 calendar days of award.