Osborne Storage Lagoon Design

As a result of a Pennsylvania Department of Environmental Protection (PA DEP) consent order, the Oxford Area Sewer Authority imposed a moratorium on any new sewer connections to its system, halting all development in the area until they could install more effluent storage. The storage lagoon had been designed but was placed on hold due to lack of funding. During this time many of the permits expired and some of the regulations changed. The Authority needed to receive new permits and approvals without new designs or extensive schedule delays.

RETTEW’s dedicated project team brought extensive design and construction oversight experience to this project. Our regulatory expertise provided the basis for successfully working with PA DEP and other permitting agencies to quickly obtain the necessary approvals and permits. During construction, the Authority discovered necessary surveying had not been completed for the lagoon during design, and the site grading design was not acceptable, making the design for the southwest corner obsolete. RETTEW surveyed, redesigned, and obtained PA DEP approval within two weeks of the discovery, resulting in minimal interruption in the project schedule and cost impact from the delay. RETTEW also provided design review and modifications, construction bidding management, and funding procurement. Even with the unexpected challenges, the project finished within schedule and below budget.

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