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Analysis Background The proposed quarry site has historically been used for agricultural purposes. The materials that are excavated from the site will be transported approximately 0.10 miles to an existing processing facility. The processing facility was originally approved in 1989 as part of a quarry tthat wo ldonperate App orad twenty-year period. On March 4, 1999, the Planning Commission app roved Actions for Quarry Excavation No. QX-89-2. The Revision added 30 years to the duraticn of the permit Excavation The excavation of the site will be by the open pit method and will begin at the southeast comer of the property. Information submitted to the Community Development Department indicates that the average excavation depth will be 35 feet, with a maximum depth of approximately 50 feet The excavation will not reach groundwater depth. Reclamation is proposed to be continuous and concurrent with mining. Almond or walnut trees will be planted in 15-to 30-acre increments as excavation allows. The site will be approximately 25 to 40 feet lower than the current elevation when reclamation is complete. Pipeline A South San Joaquin Irrigation District pipeline is located in the center of the property proposed for the quarry excavation. In a letter dated October 7, 2002, the South San Joaquin Irrigation District indicated that District policy mandates that the owner be required to replace the existing pipeline with new reinforced concrete pipe and locate it along the outer perimeter of the excavation. The South San Joaquin Irrigation Districts conditions will be incorporated into the Conditions of Approval for the proposed quarry. Noise The Cortmunity, Development Department required that an acoustical study be performed to evaluate - quarry site would be exposed to raise levels from quarry whether residences in the vicinity of the proposed q rry nt Title. The Development equipment that would exceed the levels in the San Joaquin County ap o se level of 65 d8 Ldn. Deem Title requires that Residential use types have an outdoor activity Shiningtree Environmental Services preformed ant and settingsis at an existing the proposed quarry rye excavation that was determined to be comparable to the topography 9 the property ine of acoustical study,wo mitigation below 65 db Ldn•The mitigation measure,which s also level aa I Condition of Approval, propsed quarry states: All existing and future residences shall have adequate (approximately eight feet tall with 2:1 slope) • berm placement to prevent line of sight to the quarry. Line of sight graphics shall be included with the Improvement Plan. wlliamson Act The proposed quarry site is currently under Williamson Act Contract and ndislin the son oduAct Coo i of may ds used Development Title Section 9-1 810.3(b)[11[w] states that property is proposed to be reclaimed s for quarry operations provided it is rehabilitated for agriculture. The property p po to agriculture by either being replanted in walnuts or almonds. Therefore, the proposal is consistent with the requirements of the Williamson Act and does not need to be removed from the Williamson Act in order to proceed with the quarry. PA-02-370\N & F Farms San Joaquin County Page 4 Community Development