1 Lake Tahoe Visibility Impairment Source Apportionment Analysis Final Report August 16, 2011 Mark Green and Antony Chen, Desert Research Institute David DuBois, New Mexico State University John Molenar, Air Resource Specialists This research was supported by an agreement with the USDA Forest Service Pacific Southwest Research Station, using funding provided by the Bureau of Land Management through the sale of public lands as authorized by the Southern Nevada Public Land Management Act (SNLPMA).