Travis AFB Sustainability Study Report Final Background Report

Table 5.18‐4. Existing Land Use Acreage within the Noise Contours CNEL CNEL CNEL Existing Land Use 65 dB 70 dB 75 dB Total Existing Land Uses Employment Areas are conditionally compatible, meaning sound attenuation measures or noise level reduction measures are recommended for the various uses. Employment Areas within the 70 dB noise contour require measures to achieve noise level reduction (NLR) of 25. Employment Areas within the 75 dB require measures to achieve NLR of 30. Some of the current existing Employment Areas within the 65 dB noise contour are the Potrero Hill Landfill, Recology Hay Road, and UTC Aerospace Systems. It is undetermined if these uses incorporated noise level reduction into the construction of their buildings. Agriculture Relative to incompatible existing land uses, there are 123 acres of residential located in the 75 dB noise contour. These uses are incompatible because it is determined that sound attenuation measures would not be able to attenuate the interior noise level to a 45 dB level. There are also 246 acres of existing residential use within the 70 dB noise contour and 380 acres within the 65 noise contour, which may be compatible with proper sound attenuation measures. Given the rural nature of these areas, residential densities and total units are very low. 7,241 3,472 21,636 Employment Areas 843 534 119 1,495 Forest Land 203 85 16 305 Military 734 255 503 1,493 Rangeland 758 795 290 1,842 Residential 134 123 123 380 Sparsely Vegetated Land 0 0 13 13 Urban Open 66 11 0 77 983 143 20 1,146 2,188 779 76 3,043 Water Wetlands Source: Association of Bay Area Government, 2006; Travis AFB AICUZ, 2009; Matrix Design Group, 2016 Zoning All of the zoning districts are compatible with restrictions under the various noise contours that are recommended to have noise level reduction measures in place before any new development occurs. Uses allowed in areas zoned Exclusive Agriculture are generally compatible, although agriculture involving livestock is not recommend in the 75 dB noise contours. Exclusive Agriculture zoning also permits a primary dwelling and secondary dwelling. Residential use is not recommended in the 75 dB noise contour, is strongly discouraged in the 70 dB noise contour, and discouraged in the 65 dB noise contour. Figure 5.18‐2a illustrates the existing land use in the noise contours and Figure 5.18‐2b provides the compatibility assessment for each type of land use, according to AICUZ recommendations. Table 5‐18‐4 provides the acreage of each existing land use within the noise contours. TSS Background Report 10,923 Page 5‐103

Travis AFB Sustainability Study Report Final Background Report | Page 223