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U Q a relocated terminal, taxiways, roadway and drainage facilities, plus runway modifications. The impact of developing vacant land in accordance with the Master Plan is considered to be less than significant because the development will be generally consistent with planned uses as permitted in the County's and City's General Plans. The proposed General Plan Amendment and Zone Reclassification will allow more flexibility in siting compatible uses and specify restrictions on allowed uses. Land use conflicts are not anticipated within the project site with implementation of the Master Plan, including airport operations and the regional sports complex. In the early 1990's, private aircraft operators expressed concern about the sport complex lighting. This concern was resolved by installing new light fixture that minimized dispersing ambient light. Land use conflicts are also not anticipated between proposed development and adjacent existing and proposed industrial and agricultural uses, which are generally considered to be compatible with airport operations. The City of Stockton recently prepared an EIR for the expansion of the Austin Road landfill, which is approximately 9,000 feet east of the airport. The EIR concluded that with the implementation of the recommended mitigation measures, including bird monitoring and control, the airport and landfill are compatible uses. Therefore, the impacts related to land use compatibility are expected to be less than significant. Implementation of the Airport Master Plan will result in the conversion of 591 acres of land, currently being farmed with row crops, to aviation and aviation compatible uses. All of this acreage is described as prime farmland or farmland of statewide significance. The removal of prime agricultural farmland from production is considered to be a significant, unavoidable impact, even though much of this land has urban designations on the General Plan. A Finding of Significance and Statement of Overriding Consideration have been prepared. However, it should be noted that no existing property designated Agriculture is being changed. Drainage, Water Quality, and Flooding Several intermittent and perennial streams are located in the vicinity of the airport and generally flow from east to west. Weber Slough enters at the eastern boundary of the airport and traverses south around the existing runways and then west to a pump station, which discharges to French Camp Slough. Drainage from the northwest portion of the airport property flows to the Mansville Ditch, which originates on the airport property and also drains to the French Camp Slough. The 1988 FEMA flood insurance rate maps indicate that a major portion of the airport property lies within the 100-year floodplain. The airport property has a FEMA Zone A01 classification, which identifies areas subject to shallow flooding ranging in depth from one to three feet. Reinard Brandley, the Airport Consulting Engineer, has stated that construction records show that Runway 11 L-29R was built two to three feet above the natural ground, which means the runway is at or above the 1013-year flood elevation. All areas planned for development northeast of the runways, with the exception of the area in the vicinity of the old abandoned runways, are currently located outside the 100-year floodplain. All construction must be one foot above the 100-year flood elevation. As an element of the Special Purpose Plan, a detailed analysis will be conducted to evaluate the effect of development of the airport property on the 100-year flood elevation as a result of constructing the finished floor of structures to one foot above the 100-year flood elevation. Development of the airport property will significantly increase the amount of impervious surfaces, resulting in less percolation, and significantly increase the peak rate and total amount of storm drainage San Joaquin County ER-98-1, et al\Stockton Airport Community Development Page 14