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II <br />Repon of Soils lnvestigation <br />2215 South Standard Ave., Proposed Addition <br />Santa Ana. California <br />Page 6 of 27 <br />Job No. 40-0613 <br />April 5. 1999 <br />I <br />I <br />7.0 LABORATORY TESTING PROGRAM <br />Laboratory tests were conducted on representative soil samples for the purpose of <br />classification and determination of physical properties and engineering characteristics. <br />The laboratory testing program included tests for moisture content, maximum dry <br />density, direct shear, atterberg limits, panicle size distribution, and R-Value. Appendix C <br />contains descriptions ofthe test methods and summaries ofthe results. <br />8.0 GEOLOGY <br />8.1 General <br />The site is located in the northwest portion of the Peninsular Ranges Geomorphic <br />Province. The Peninsular Ranges are characterized by northwest-southeast trending <br />mountains separated by similar trending fauits (Webb, l99O). The site is located <br />approximately 5 miles north of the Upper Newpon Bay at approximately 60 feet above <br />sea level. Based on the referenced geologic maps the overlying site materials consist of <br />Quaternary Alluvium and Colluvium. <br />8.2 Geologic Site Materials <br />8.2.1 General <br />The upper two feet consists of silt with sand in a dry, and disturbed condition. <br />Lean clay soil is obsened to underlv silt, with sand to a depth of approximately <br />35 feet. Between i5 and 50 feet the soil profile consisted of Clayey sand. Poorly <br />I <br />l <br />I <br />I <br />.i <br />J <br />{ <br />I