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.1 Spinardi Associates Il. PROJECT NARRATIVE 1.0 PROJECT DESCRIPTION RMC Pacific Materials, Inc. (RMC) is proposing to develop a sand and gravel mining operation near Vernalis, within southern San Joaquin and northern Stanislaus Counties. The site, located slightly over a mile east of the Interstate 5 and 580 intersection, consists of approximately 688 acres, of which 590 acres or 85% is located within San Joaquin County. The site is situated south of Blewett Road, east of Koster Road, north of Hospital Creek and west of Welty Road. The western property line is approximately 300-feet from the centerline of the Delta Mendota Canal. See Figure 1 - Vicinity Map for project location. Excavation of the site is expected to generate over 100 million tons of sand and gravel product over 60 years. Although sales fluctuates with market demand, RMC anticipates sales to be in the range of 1.7 million tons per year. 2.0 CURRENT USE AND OWNERSHIP RMC owns all the project property except two parcels (approximately 156 acres) which are leased from a private owner Jerry Costa. These two parcels Costa parcels are currently within the _ Williamson Act . Once mining is completed in the Costa parcels, the land will be reclaimed and returned to Costa. See Figure 2 for property ownership information. Currently the project site is used for agriculture with apricot orchards as the main crop. The terrain is fairly level with less than a 1% cross slope from southwest to northeast. Currently, there is a house and barn located within the Costa property will be moved to Parcel A or B,just off Koster Road. 3.0 MINING AND PHASING RMC will conduct a phased mining program that excavates pit run material and conveys it to an on-site central processing plant. Silt waste products from the plant will be discharged into silt ponds. All disturbed surface runoff will either be directed to silt ponds or contained within the mining excavation. Mining will be accomplished by first clearing and grubbing the Phase to be mined of vegetation, trees, structures and debris. Scrapers and dozers will then strip the overburden, using it for the 1