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Government's Sustainability Moment - CGI Initiative for Collaborative ...

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ington, built in 1917, is a granddame of federal office buildings.“We would say now that they createda green building,” Peck says.“They had heat, but no air conditioning,some electric light. Andthey built transoms, so there wasair flow from the windows.”Using all of the original greenfeatures, the GSA headquarters isnow undergoing a $160 million renovationwith Recovery Act funds.“We’re taking this building back tobe<strong>for</strong>e we sealed the windows,”says Peck. “One of the things thisbuilding allows us to do is use daylight.They made big windows andnarrow floors so light could getinto corridors.” Fewer lights alsomake the rooms cooler. There willbe electric lighting, of course, andair conditioning— it’s Washington,D.C., after all, where summers aresteamy. But lighting will be energysavingand automated, so lights goout when no one is in the rooms,and the AC will be controlled inseparate zones. A “cool roof” willkeep out summer heat, and solarwater heating will make use ofWashington’s frequent 90-degreeplussummer days.Net ZeroGSA’s first historic net zero energybuilding—meaning it will generateall the energy it uses—will beThe Wayne Aspinall Federal Buildingand U.S. Courthouse in GrandJunction, Colo. Designed by SupervisingArchitect of the TreasuryJames Wetmore in 1918, thebuilding is the first on the NationalRegister of Historic Places to berenovated to such an aggressivegreen standard.The project has been designedto meet LEED Platinum certification,the highest level of certificationoffered under the U.S. GreenBuilding Council’s rating system,known as Leadership in Energyand Environmental Design orLEED. To achieve LEED Platinum,GSA will install a geothermal heatingand cooling system that usesthe warmth or cold of the groundto control temperature, and a solarpanel array that is projected togenerate enough energy to meetthe building’s electricity demand.Energy produced in excess ofthe amount needed by the buildingwill be exported to Grand Junction’selectrical grid. State-of-theartfluorescent light fixtures withwireless controls will adjust lightingto respond to natural light levels,and storm windows with solarcontrol film will reduce demand <strong>for</strong>heating and cooling. “We’re prettyexcited about it,” Peck said in aninterview in The Dirt, a blog publishedby the American Society ofLandscape Architects.S P R I N G 2 0 11 | COLL ABOR ATIVEGOV.ORG/LE AD | Leadership 19

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