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f northern property lines of Lots 3-11 (as depicted on Revised Tentative Map dated September 28, 2006) and the western property line of Lot 1. In addition, Developmerit Title Section 9-1020,4(g) states street trees shall.be' required along street frontages where noise°atfenuation walls are required and shall either be placed in'the yard or integrated with a,serodritine Wall. The applicant will need to depi1ct4h'e masonry wall and street trees on thesubdivision improvement plan, indicating how.the.'Wall.will be constructed. Landscaping of corrimon, are (surrounding the. noise.attenuations walls)will either be maintained by a'Homeowner's'Association or Lockeford Community Services District: . Noise i Development Title Section 9-1025.9 lists the Residential use type as a noise sensitive land use. An Environmental Noise Analysis was prepared by Charles M. Salter Associates, Inc. on September 27, 2005: The first row of proposed residences facing Highway 12188 will be exposed to future traffic noise levels which exceed the 65 dB Ldn standard for San Joaquin County. 1n order to achieve the acceptable exterior noise level of 65dB (Development Title Section 9- 1025.9), an eleven-foot barrier between Highway 12188 and the northern property lines of Lots 1, 87-102, 108, 109, and 1127115-and the eastern property line of Lots 115 and 116 shall be constructed. Additionally, a five-foot tall barrier shall be required from Lots 3 through 20. Per screening requirements in Development Title Section 9-1022.4[d], a solid masonry wall-shall be required from Lots 3-11 and as a result, the required five-foot barrier will apply to Lots 12-20. The applicant is proposing a solid, redwood fence for the noise barrier and has provided an approval letter from Charles M. Salter Associates, Inc. dated September 27, 2006, which states redwood fencing is acceptable"as long as the fence board has a surface density of approximately 3 pounds per square foot(e.g., 1-1/2 inch thick)." In addition, the redwood fencing may not have any cracks or gaps. Oak Trees The project site contains ten oak trees, comprised of two Heritage oak trees and eight Native oak trees. The applicant has stated that he wants to preserve the oak trees. To comply with the requirement of a,noise attenuation wall and preserve the oak trees, the applicant is proposing a cantilever, solid, redwood fence. This proposal would be in compliance with requirements in Development Title Section 9-1505.5 for grade changes under the dripline of the tree while providing an approved noise barrier simultaneously. Opposition Letters The Community Development Department has received six letters in opposition to the project. Specifically, neighbors have expressed concerns regarding the impact of traffic and a need for a park. Traffic • Several letters expressed concerns with regards to traffic at Sierra Drive and State Route 12188. The Department of Public Works required the applicant to complete a traffic study for the underlying Major Subdivision project. The traffic study was prepared by Dowling Associates, Inc. on May 31, 2006 and included mitigation measures to ensure any impacts due to traffic.would be reduced to a less-than-significant level. Mainly, the applicant shall be required to pay the Traffic Impact Mitigation Fee and the Regional Traffic Impact fee. Additionally, the applicant shall install a traffic signal at the intersection of State Route 12188 and Sierra Drive and provide left turn lanes on eastbound and westbound State Route 12188 at the State Route 12188 and Sierra Drive access intersection. The mitigation measures can be found in its entirety in the Department of Public Work's Conditions of Approval letter dated September 15, 2006. San Joaquin County PA-0500509, PA-05008441Lockefor Land Group Community Development Page 4