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2 Geology The property is underlain by metamorphosed intrusive and volcanic units of the Hyco Formation that are 615 to 633 million years old2 as shown in Figure 2. The western majority of the site is underlain by mixed epiclastic-pyroclastic rocks with interlayered dacitic lavas (Zhe/pl) and the eastern portion is underlain by dacitic shallow intrusive of the upper portion of the Hyco Formation (Zhdsi/u). Figure 2.-- Bedrock Geology. These rocks contain steeply dipping (near vertical) joints and fractures and are overlain by a regolith of weathered-in-place materials that comprise partially weathered rock and saprolite. Based upon the reported depths of surface casings in the two water wells on the property this depth of weathering is 50 to 65 feet. The upper part of the regolith comprises saprolite and soil and typically does not provide significant groundwater to wells. The bottom of the regolith is referred to as Partially Weathered Rock (PWR) and generally has a greater permeability than the overlying materials. The bedrock provides water to wells from interconnected fractures and joints that are intercepted by the well bore. Hydrogeology The hydrogeologic conditions for the property have been generally described in are report by the U.S. Geological Survey for Orange County3. The hydrogeologic units of the bedrock identified by the USGS report are shown in Figure 3. The site is contained in the Phyllite (PHL)and Metavolcanic felsic (MVF) units. 2Philip J. Bradley, Heather D. Hanna and Randy Bechtel, 2011: Geologic map of the Rougemont 7.5 min Quadrangle, Orange, Durham and Person Counties, North Carolina. NCGS open-file Report 2011-8. 3 William L. Cunningham and C. C. Daniel III, 2000. Investigation of Ground-Water Availability and Quality in Orange County, North Carolina: U.S. Geological Survey Water Resources Investigations Report 2000-4286. 122