Remove existing aggregate ballast (approx. 5,150 sq ft) and replace with membrane roof, remove existing built-up roof (approx. 820 sq ft) and replace with steel roof deck including ancillary, build trellis over an existing opening (approx. 92 sq ft), and all ancillary work. Additionally, there are two additive alternate bids. Alternate bid one includes removal and replacement of coping and alternate bid two includes removal and replacement of existing domed skylights and curbs.