Project Details

  • Construction Date

    1975

  • Application

    Industrial

  • Capacity

    3 @ 0.25 MG (40’ ID x 24’ SWD); 3 @ 4.6 MG (185’ ID x 23’ SWD); 2 @ 2.9 MG (172 ID x 16’ SWD; 0.30 MG (60’ ID x 15’ SWD)

  • Owner

    E.I. DuPont de Nemours & Co.

Project Description

From 1974 to 1975 Preload constructed nine organic chemical open-top treatment tanks for E.I. DuPont de Nemours & Co.:

  • three 250,000 – Gallon neutralization tanks with 40’ inside diameters and 24’ side water depths
  • three 4.6 MG aeration tanks with 185’ inside diameters and 23’ side water depths
  • two 2.9 MG secondary treatment tanks with 172’ inside diameters and 16’ side water depths
  • one 300,000-Gallon sludge thickener tank with 60’ inside diameter and 15’ side water depth

All nine of these wire-wound prestressed concrete Preload tanks have been in continuous service for more than 40 years.