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KLEINFELDER 2 SITE SETTING 2.1. SITE LOCATION The California Nuggets facility is located at 23073 S. Frederick Road, Ripon, San Joaquin County, California (Plate 1). The site can be found within Township 2 South, Range 7 East, Section 23. The site Assessors Parcel Number is 243-260-08. 2.2. CURRENT USE AND SITE CHARACTERISTICS The size of the property is approximately 14.77 acres. The site consists of corn and almond processing facilities for the production of corn nut snacks and sliced almonds, respectively. Additionally, there are warehousing and packaging operations of the products performed on site. An approximate 6-acre sprayfield is utilized to discharge wastewater from the processing operations and two unlined ponds (volumes not known at this time) are used as percolation/retention basins. Domestic waste is discharged to independent septic systems. Water for the facility is supplied be a single water well on the site. 2.3. REGIONAL GEOLOGY AND HYDROGEOLOGY The site lies within the western portion of the Great Valley Geomorphic Province of California. The valley is approximately 400 miles long and averages about 50 miles wide, and comprises about 20,000 square miles. The valley has been filled with a thick sequence of marine and non- marine sediments from the late Jurassic to Holocene. The uppermost strata of the Great Valley represent, for the most part, the alluvial, flood, and delta plains of two major rivers (Sacramento and San Joaquin Rivers) and their tributaries. The valley deposits are derived from the Coast Ranges to the west and the Sierra Nevada to the east. Granitic and metamorphic rocks outcrop along the eastern and southeastern flanks of the valley. Marine sedimentary rocks outcrop along most of the western, southwestern, southern, and southeastern flanks; and volcanic rocks and deposits outcrop along the northeastern flanks of the valley. The valley geomorphology includes dissected uplands, low alluvial plains and fans, river flood plains and channels, and overflow lands and lake bottoms. The majority of the native sediments near the site consist of Miocene to Holocene continental rocks and deposits of a heterogeneous mixture of generally poorly sorted clay, silt, sand, and gravel. Some beds of claystone, siltstone, sandstone, and conglomerate are also present. Based on the San Joaquin County Flood Control and Conservation District, Lines of Equal Elevation of Groundwater, Spring 2003 Map, first encountered groundwater in the vicinity of the site is anticipated to occur at approximately 15 feet below ground surface (bgs) with a groundwater flow direction to the west. 50890.E01/ST05R358/JDZ:ly Page 2 of 12 ®2005,Kleinfelder,Inc. April 29,2005