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pquin <br /> o. r SAN JOAOUIN COUNTY - <br /> -� ' . <br /> COMMUNITY DEVELOPMENT DEPARTMENT _ <br /> 1810 E.NAZELTON AVE.,STOCKTON,CA 95205!232 <br /> PHONE:209//883121 FAX209//883183 <br /> NOTICE OF PREPARATION <br /> Environmental Impact Report No. PA-0400174 <br /> On the basis of the Initial Study prepared for the project description below, the <br /> Environmental Review Officer has determined that the project may have a significant <br /> impact on the environment and thereby gives notice that an Environmental Impact <br /> Report is to be prepared in accordance with the provisions of the California <br /> Environmental Quality Act (CEQA)as amended_ <br /> Application: <br /> The applicant, DeSilva Gates Construction,has submitted a Quarry Excavation <br /> application (PA-0300550-a discretionary projert subject to approval by the Planning <br /> Commission) to permit the extraction of 20 million cubic yards of aggregate (30 million <br /> tons) over a forty (40)year period. <br /> Project: <br /> Quarry Operation <br /> The project is a phased Quarry Excavation application to extract 20 million cubic yards <br /> of aggregate (30 million tons) over a forty (40) year period. The excavation will occur on <br /> approximately 155 acres (five parcels) of a 217.5 acre project site. The applicant also <br /> proposes to construct a processing plant with ancillary buildings on approximately 10 <br /> acres of the project site. Reclamation will occur on all 165 acres of disturbed land. It is <br /> anticipated that an average of 750,000 tons of aggregate will be produced annually. The <br /> maximum amount of aggregate produced annually will be 1.5 million tons. The average <br /> groundwater depth is 75 feet above mean sea level (AMSC). The maximum depth of the <br /> quarry excavation will be 175 feet (15 feet AMSC). <br /> Reclamation Plan <br /> The project will be excavated and reclaimed in four (4) phases using two.pits; the South <br /> Pit (approximately 40 acres) and the North Pit (approximately 1,15 acres), respectively. <br /> Each pit will be excavated and reclaimed in stages as follows (also see attached Figure <br /> 14 from reclamation plan): <br /> Phase 1A: Excavate South Pit to groundwater. Excavate Stage 1 to design <br /> depth and backfill fines in Stage 1 while excavating Stage 2 of South Pit. <br /> Phase 18: Excavate Stage 1 of North Pit to 20 foot depth. Store water from <br /> South Pit in Stage 1 of North Pit. Mine South Pit to design depth. <br /> r <br />