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ENGEO INCORPORATED 5150.100.101 March 31, 2008 3 The site is located within a State of California Earthquake Fault Zone (CDMG, 1982) for the Calaveras fault, as shown on Figure 4. The State shows two traces of the Calaveras fault crossing the site. The eastern trace is mapped by the State near the toe of the hillside, and roughly parallel to Foothill Road (N25W). The State maps the northern termination of this trace near Dublin Canyon Road. The second fault trace is mapped stepping to the left about 100 feet to the west of the eastern trace. As shown on Figure 4, Dibblee (1980) Hart (1981), and Crane (1988) map a fault trace roughly parallel to Foothill in a location similar to the mapping by the State of California (1982). Hart (1981) and Crane (1988) also map fault traces trending N45W to N55W as shown on Figure 4. This trend of faulting is roughly parallel to the hillside and to the existing paved driveway that crosses the site. Previous Studies Previous fault investigations have been performed at the site by Geotechnical Engineering, Inc. and Hydro-Geo Consultants. The locations of trenches from these previous studies are depicted on the attached Site Plan, Figure 2 and logs from these previous fault explorations are included in Appendix B for reference. Previous fault exploration on the properties located to the north of the site were performed by Kleinfelder and Associates (1984) and by Terrasearch Inc. (1983). Previous fault exploration has been performed to the south of the site by Burkland and Associates (1973). The locations of these exploratory trenches are depicted on Figure 4. The previous studies were reviewed and pertinent information was used in preparation of this report. The fault study by Terrasearch, Inc. (1983) was for the hotel building located to the north of the subject site. This study included three exploratory trenches as shown on Figure 4. The trench logs do not include notations that would indicate that a fault was encountered. Based on review of the