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reach capacity in approximately 2037. Pursuant to the California Integrated Waste Management Act of 1989, the Alameda County Waste Reduction and Recycling Act of 1990 (Measure D), and the City's Source Reduction and Recycling Element, the City must meet the countywide goal of 75% reduction of waste going to landfills. Because local topographic conditions and land use patterns do not allow for the current operation of a landfill in Pleasanton, combined with the capacity limits at the Vasco Road Landfill and mandatory waste reduction requirements, construction waste reduction, disposal and recycling provisions are required. D. Pleasanton is located in the Tri- Valley, which has local topographic conditions which effect air quality. These conditions include being ringed by the Diablo Range of hills, and being a sheltered inland valley with its floor at an altitude of about 400 feet. Hills rising from a height of 1,000 to 1,500 feet border the valley floor on the west and east, with only narrow gaps in the hills allowing wind movement. The Tri - Valley does have violations of federal and state air quality standards based on these local topographic conditions, as well as local climatic conditions, particularly the summer high heat where local average temperatures are 53 to 84 degrees in June, 55 to 89 degrees in July and August, 53 to 86 degrees in Sept., with highs regularly in the 90s and low 100s. These local topographic and climatic conditions, combined with the local environmental condition as set forth in the Air Quality and Climate Change Element and Energy Element of the Pleasanton General Plan 2005 -2025 (July 2009), adopted herein by this reference, are the basis for the CALGreen amendments allowed by CALGreen section 101.7. These conditions contribute to the Bay Area's status as a "nonattainment area" under the federal Clean Air Act for ozone and particulate matter, and therefore these air quality considerations need the CALGreen mandatory and Tier 1 measures, as applicable, to improve indoor and outdoor air quality, reduce energy usage, and decrease greenhouse gas emissions. E. The topography (the arrangement of the natural and man-made physical features) of many of the developed areas of the Pleasanton are generally characterized by nearly full use of available building envelopes, and often significant required set backs from other buildings and natural features. Particularly in the area of the Downtown Specific Plan, the local topographic conditions feature dense sites with historic development patterns. CALGreen's Sections 4.105 and 5.105 reserves for future updates the development of provisions for deconstruction and reuse of existing buildings. Similarly, these Local topographic constraints give rise to the need for clarification of the non - applicability of CALGreen to renovations and additions to particular existing historic buildings in developed areas. F. Pleasanton has inventoried greenhouse gas emissions from City operations and from the community through the International Council for Local Environmental Initiatives (ICLEI). This action was prompted by the Global Warming Solutions Act of 2006 (AB 32) and SB 375 (regarding transportation planning and sustainable communities strategy). Pleasanton is undertaking the preparation of a Green Building Findings Page 2 of 3