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2 SITE SETTING 2.1 SITE LOCATION IThe site is located at 17950 Via Nicolo west of Tracy in San Joaquin County, California (Plate ' 1). The site is located to the southwest of Highway 580, and is accessible from the Patterson Pass Road exit. The Musco Olive Products facility is located in the southwest '/4 of Section 34, Township 3S, Range 4E of the Mt. Diablo Baseline and Meridian. The facility also includes operations on an adjacent parcel located on the northeast '/4 of Section 4, Township 3S and Range 4E. 2.2 CURRENT USE AND SITE CHARACTERISTICS ' The site is occupied by the olive processing and packaging plant located in the northern portion of the property (Section 34) adjacent to the Southern Pacific Railroad (SPRR) and Highway 580. An existing one million gallon storage pond is located southwest of the plant along the western ' boundary of Section 34. Two surface impoundments are located to the northeast of the plant near Highway 580, and three approximately 3 acre process water checks are located near the southeast comer of the facilities northern property boundary. A proposed 114 million-gallon storage pond and existing spray fields are located southwest of the plant (Section 4). Land application areas include pastureland and some landscaped areas surrounding the facility in Section 34 and pastureland located on an adjacent parcel located to the southwest (Section 4). See Plate 2 for ' details. The one million-gallon storage pond, a proposed 114 million-gallon storage pond location, and land application areas are accessible by unpaved roads. The site is situated near the flanks of rolling hills with elevations ranging from approximately 200 to 540 feet above mean sea level (msl). The Musco Olive facility is located on relatively flat terrain at elevations ranging from ' 200 to 280 feet above msl. Land application areas, especially in Section 4 are relatively steep with elevation differences of about 240 feet. ' 2.3 REGIONAL AND LOCAL GEOLOGY The site lies along the transition between the Great Valley and Coast Ranges Geomorphic Provinces of California. Review of the California Division of Mines and Geology "Geologic Map of the San Francisco — San Jose Quadrangle," indicates that the site is underlain by Pleistocene alluvium (plant area) and Miocene fanglomerate. The northwest trending Midway Fault is located adjacent off site to the west. According to the U.S. Department of Agriculture, Soil Conservation Service, "Soil Survey of San Joaquin County, Califomia" dated October 1992, soils at the site consist of Calla Clay Loam and ' 12406/2002RI60 Paget of 13 Copyright 2002,Kleinfelder,Inc. February 20,2002 KI EINFELDER 2825 East Myrtle Street,Stockton,CA 95205-4794 (209)948-1345 (209)948-0621 fax