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16   GREEN BUILDINGS TODAY
































               Figure 2.1  LEED-NC project growth, 2002–2007.



                     measures. The project serves up to 3000 people per day* and treats, then recycles all
                     of the building sewage with an onsite treatment plant. Overall, the project expects to
                     save 60 percent of the energy use of a conventional building and about 56 percent of
                     the water use. It was built for a reported one percent net cost premium over a con-
                     ventional building.




                      TABLE 2.1  LEED-NC CERTIFICATIONS BY ATTAINMENT LEVEL, APRIL 2008*
                                         NUMBER OF CERTIFIED             PERCENTAGE OF TOTAL
                      LEVEL              PROJECTS                        CERTIFICATIONS

                      Certified                   362                             36
                      Silver                     331                             33
                      Gold                       272                             27
                      Platinum                    50                              5
                      Total                      1015                            100
                      *U.S. Green Building Council data furnished to the author.




                     *Personal communication, Andy Frichtl, Interface Engineering, February 2008.
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