SITE INFORMATION AND CORRESPONDENCE CASE 2

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DER 'r'r htft Pp .MightS Iudcm. V 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. The general direction of regional groundwater flow in the area of the site, based on ' reports issued by the San Joaquin County Flood Control and Water Conservation District are summarized in the following Text Table 1. TEXT TABLE 1 REGIONAL GROUNDWATER ELEVATION AND FLOW DATA CALIFORNIA NATURAL PRODUCTS FACILITY LATHROP, CALIFORNIA Ground-Water Approximate Depth to Flow Direction of Date Elevation Elevation of Groundwater Groundwater of County Property Map Data (from County (from Nolte (calculated from (based on Map) prior 2 columns) County Map) survey) Spring 1998 8 feet msl 20 feet msl 12 feet bgs Northwest Fall 1998 3 feet msl 20 feet msl 17 feet bgs West Spring 1999 8 feet msl 20 feet msl 12 feet bgs Northwest I Spring 2003 0 foot msl 20 feet msl 20 feet bgs West Fall 2006 0 to 10 feet msl 20 feet msl 10 to20 feet bgs Northwest Fall 2008 0 to 10 feet msl 20 feet msl 10 to 20 feet bgs Northwest msl an sea level bgs below ground surface Groundwater depth and flow direction may be influenced by local pumping, rainfall, and irrigation patterns. With the nearby groundwater extraction at Sharpe Army Depot, local irrigation, well pumping and recharge at CNP and other nearby properties, groundwater flow beneath CNP has shown varying flow directions often differing from the 'regional' flow directions summarized in Table 1 above. 101486.5/ST012R0588 Page 5 of 14 July 31, 2012 ' Copyright 2012 Kleinfelder