Costco Commercial Development Building

This 60-in. underground detention system from Contech came in at half the cost of the alternate HDPE.

Contech’s welding crew went on site to perform welding needed on many of the fittings to get exact fabrication angles to connect with existing storm sewer lines. The majority of the tees and elbows on the manifolds were prefabricated at the plant to ensure timely installation for the contractor. Contech’s welding field crew also aided the contractor in a quick installation in the field.