PROJECT UPDATE: ABINGDON WATER TREATMENT PLANT

PC Construction completed the construction of the original 10 MGD Abingdon Water Treatment Plant in Abingdon, Maryland, in the fall of 1994. Fifteen years later, we were awarded the $62 million expansion project at this same site. The project broke ground in January of 2009 and consists of the construction of a new 10 MGD treatment train including new raw water screening facilities, pretreatment with rapid and flocculation, clarification using plate settlers, filtration, backwash and washwater recycle, a new 2.5 million gallon clearwell and upgrades to the finished water pumping and existing filters.

The first of three project phases is complete. Phase 1 consisted of the construction of a 115-inch diameter tunnel beneath interstate I95 to carry a new 48-inch raw water main along with a 30-inch and 12-inch finished water service. The requirement to increase the plant’s raw water intake via the tunnel was met two weeks ahead of the contractual date. Phase 2 consists of the construction of the new 10 MGD treatment train. The 20,000 cubic yards of concrete placement is complete with the emphasis shifted to process piping, equipment, and chemical feed systems. Phase 2 construction will be completed three months ahead of the contractual completion date. The final phase, and possibly the most challenging, will be the rehab of the existing filters, filter gallery, and associated controls package. Construction on Phase 3 will not commence until the new treatment train has been placed into service.