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BACKGROUND/HISTORY With the stated purpose to "...protect our city from uncontrolled growth and the impact it has on ridgelines and hillsides, traffic, schools, water supply, and our overall quality of life," Pleasanton voters in November 2008 passed Measure PP, the "Save Pleasanton's Hills and Housing Cap Initiative."' Measure PP resulted in the addition of Land Use Element Program 21.3 to the General Plan, which reads: Program 21.3: Ridgelines and hillsides shall be protected. Housing units and structures shall not be placed on slopes of 25 percent or greater, or within 100 vertical feet of a ridgeline. No grading to construct residential or commercial structures shall occur on hillside slopes 25 percent or greater, or within 100 vertical feet of a ridgeline. Exempt from this policy are housing developments of 10 or fewer housing units on a single property. Splitting dividing, or subdividing a "legal parcel" to approve more than 10 housing units is not allowed (Measure PP, Nov. 2008). After Measure PP qualified for the ballot, the City Council commissioned a report about the effects of the initiative, which noted that some key terms in the initiative, including "structure", "ridgeline" and "slope" were not specifically defined. The ballot materials submitted to the voters preceding the November 2008 election, including the City Attorney's Impartial Analysis, also highlighted that such key terms could be subject to differing interpretations. Measure PP issues (including the interpretation of key terms in the measure, particularly "structure") were at the forefront of discussions related to the Lund Ranch II Project, which was approved on January 5, 2016, and the subsequent referendum (Measure K), which sought to halt the project. Measure K was approved by the voters, meaning that the Lund Ranch II project was able to proceed. In 2016, out of a desire to provide clarity regarding hillside considerations on lands in the Southeast Hills, the City Council placed slope mapping of the area on the City Council work plan as a priority project. SITE DESCRIPTION The Southeast Hills, comprising approximately 1,520 acres within the City and just outside City limits in unincorporated Alameda County, is a landform that functions as a visual boundary and important feature to the southeast of the developed portion of the City (see Attachment 5, Project Location Map). Ridgeline elevations tend to increase as one moves towards the southeastern portion of the area, ranging from about 500 feet in the southwestern portion of the area to approximately 1,170 feet in the extreme southeast corner of the Foley Property. Although the Southeast Hills have a long history of livestock grazing, they have been subject to limited development, contain large expanses of native vegetation, and serve as a wildlife corridor between Pleasanton Ridge Regional Park and the wildlands around San Antonio Reservoir. The Southeast 'The provisions of Measure PP related to the City's Housing Cap were invalidated by the Alameda County Superior Court as being in conflict with State law mandating that communities meet regional housing requirements. Page 2 of 10