NAPERVILLE, IL – Nalco has announced that its global corporate headquarters building in Naperville, IL, has earned the U.S. Green Building Council's Gold Certification for Existing Buildings. More than 800 Nalco employees in various administrative, supply chain, finance and marketing departments work in the 417,500-square-foot complex.

"We are proud to become one of a handful of buildings in the Chicago area to have achieved LEED Gold certified status," said Mary Kay Kaufmann, Nalco's Chief Marketing Officer and Group Vice President, Commercial Operations, Water and Process Services Americas. "To accomplish this rating for a building that is nearly 25 years old is especially gratifying. We have taken a number of steps to make our facility more efficient including using Nalco 3D TRASAR® automation technology to manage our boilers and cooling tower, replacing lighting and plumbing fixtures with new and more efficient ones, using Nalco's HVAC Performance Services for energy savings and improved indoor air quality, as well as offering employees non-conventional commuting options."

The LEED for Existing Buildings Rating System helps building owners and operators measure operations, improvements and maintenance on a consistent scale, with the goal of maximizing operational efficiency while minimizing environmental impacts. LEED for Existing Buildings addresses whole-building cleaning and maintenance issues, recycling programs, exterior maintenance programs, and systems upgrades.