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• j •1 NOTICE OF PREPARATION ENVIRONMENTAL IMPACT REPORT NO . ER-90-8 On the basis of the Initial Study prepared for the project described below, the Environmental Review Officer has determined that the project may have a significant impact on the environment and hereby gives notice that an Environmental Impact Report (EIR) is to be prepared in accordance with the provisions of the California Environmental Quality Act (CEQA) , as amended. APPLICATION: The project requires an approved Quarry Excavation application in order to establish the use . No additional application will be required. PROJECT DESCRIPTION: The Quarry Excavation application proposes to allow the removal of 2 . 4 million tons of rock, sand, and gravel over a ten-year period, which will encompass two phases . Ongoing site rehabili- tation would take place as excavation is completed on portions of the project site , and final reclamation of the site for agri- cultural uses would be completed within a year of the end of the excavation. As a part of that rehabilitation plan, the overbur- den, varying from zero to eight feet in depth, would be set aside and then replaced following excavation of the 8- to 20-foot-deep underlying layer of rock, sand, and gravel . Processing of the excavated material would take place at an existing plant currently in operation west of the parcel and north of the Mokelumne River . Access to the plant is proposed via existing and proposed privately maintained haul roads on the site and a bridge that will be relocated from its current upstream location. The plant is proposed to operate from 6 : 00 a.m. to 6 : 00 p.m. , Monday through Friday, on a year-round basis , weather permitting . The project is expected to generate , at peak operation, 50 one-way truck trips per day and 200 per week. Trucks entering and leaving the processing plant would use County- maintained public roads . The application states that no excavation will occur in areas immediately adjacent to the Mokelumne River and that natural vegetation along the river will be protected. In addition, 10 , 000 gallons of water per day will be taken from a well near the processing plant , mixed with a dust palliative , trucked to the excavation site, and used for dust control . The application states that no surplus or wastewater will be generated and that there will be no discharges into the river . PROJECT SIZE : The proposal covers approximately 120 acres of a 253 . 71-acre par- cel . Notice of Preparation - 1 - ER-90-8 )