E.E. Cruz was responsible for the second phase of a two phase program to construct the Flushing Bay Combined Sewer Overflow Retention Facility. The project involved mass excavation of contaminated material, construction of a deep soil mix earth support system, dewatering, site utility work, pipe piles, and the installation of steel sheet piling, reinforced concrete, and structural steel. The project required extensive mechanical work which included the installation of nine tide gates, two belt conveyor systems, five three story mechanical bar screens, a storage cell flushing and cleaning system, chemical and air treatment systems, and interconnection piping. In addition, E.E. Cruz constructed a 40,000 square foot structural steel building with a brick façade, a 25,000 square foot recreational facility, and an 11,000 square foot maintenance facility for the NYC Department of Parks and Recreation.

Key project elements include:

• In-site soil classification
• Excavation of 115,000 cubic yards of contaminated soil (35 feet deep)
• Construction of 65,000 square feet of soil mix wall for support of excavation
• Installation of over 400 multi-strand soil anchors
• 90,000 square feet of steel sheeting (60 feet long)
• 15,000 square feet of soldier piles and lagging
• Construction of 35,000 cubic yards of structural concrete
• Installation of 4,500 tons of reinforcing system
• Construction of a 40,000 square foot structural steel building with brick facade
• Construction of a 25,000 square foot recreational facility
• Construction of an 11,000 square foot maintenance facility (New York City Department of Parks and Recreation)
• Installation of five 175 HP submersible pumps
• Installation of an odor control system
• Installation of flushing water system
• Installation of seal and service water systems
• Construction of sluice gates and bar screens
• Installation of elevators