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Analysis Background The site contains an orchard comprised of almond and peach trees. The applicant is currently excavating sand and gravel from an existing quarry (QX-99-03) approximately % mile south of the project area. QX- 99-03 is expected to be depleted in the year 2004—2005. This permit request will enable the applicant to supplement and combine aggregates from this site with materials obtained from other sources. The material that is excavated from the project site will be hauled to an existing processing plant approximately 2.1 miles West of the excavation site at 26292 East River Road, Escalon (QX-89-02). The processing facility was originally approved in 1989 as part of a quarry that would operate for a twenty- year period. On March 4, 1999 the Planning Commission approved a Revision of Approved Actions for Quarry Excavation No. QX-89-02. The Revision added 30 years to the life of the permit. Excavation The excavation of the site will begin along the southeastern property line and progress to the northwestern property line. Information submitted to the Community Development Department indicates that the average excavation depth will be 30 feet,with a maximum excavation depth of approximately 40 feet. The excavation will not reach groundwater depth. Reclamation is proposed to be continuous and concurrent with mining. The site will be approximately 25 to 40 feet lower than the current elevation when reclamation is complete. Williamson Act The proposed site is currently under the California Land Conservation Act. (Williamson Act Contract 72- C1-05). A Notice of Nonrenewal for this contract was approved in 2003- Development Title Section 9- 1810.3 (b)(1)(W) conditionally permits quarry excavation on parcels under Williamson Act Contract r. provided the land is rehabilitated for agricultural uses. The applicant is proposing to reclaim the parcel back to agriculture with the planting of almond and walnut trees. Additionally, peach and almond trees will continue to be farmed until excavation commences in each phase. Reclamation will proceed concurrently with each phase of excavation. This temporary disturbance to agricultural land is not considered significant. Department of Conservation(Office of Mine Reclamation) The Office of Mine and Reclamation (OMR) reviewed the proposed Reclamation Plan. In the memo dated August 18, 2004, OMR provided a list of supplemental information that needed to be provided in order to meet the minimum state requirements of the Surface and Mining and Reclamation Act (SMARA) and the State mining and Geology Board's regulations for surface mining and reclamation practices. The applicant submitted a revised Reclamation Plan, including the supplemental information, on September 7, 2004, that satisfied OMR's requirements. Noise The Community Development Department required that an acoustical study be performed to evaluate whether residences in the vicinity of the proposed quarry site would be exposed to noise levels from quarry equipment that would exceed the levels permitted in the San Joaquin County Development Title. Development Title Section 9-1025.9 requires that Residential use types have an outdoor activity area with a noise level of 65 db Ldn or less. Deem Shiningtree Environmental Services performed an acoustical analysis at an existing quarry excavation that was determined to be comparable to the topography an setting of the proposed quarry. Based on the results of the acoustical study, mitigation measures were San Joaquin County PA-0400250\Reed Community Development Page 3