We are pleased to announce that in October 2009, Integral Performance Engineering became part of and is now operating as the Integral Group, a rapidly growing global network of building services engineers committed to accelerating sustainable solutions. We are also proud to share the exciting news in November 2009, that Rumsey Engineers, one of the leading deep green engineering firms located on the West Coast, has also joined Integral Group. Rumsey Engineers Joins Integral Group From our offices in Alexandria, Richmond, Raleigh and San Francisco we will continue to serve our existing and new clients with the same focus on quality and excellence. We will add value to our clients from increased depth in sustainable engineering solutions. Please be sure to visit the Integral Group website Integral Group for further information.