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Lutzky Associates Development. LP - Geolechnical Investigation <br />MACTEC Project 4953-03-2631 <br />September 18.2003 <br />The assessment of general site environmental conditions for the presence of contaminants in the <br />soils and ground water of the site was beyond the scope of this investigation. <br />The results of our field explorations and laboratory tests, which form the basis of our <br />recommendations, are presented in Appendix A, Explorations and Laboratory Tests; and Appendix <br />B, Cone Penetration Test Data. <br />2.0 SITE CONDITIONS <br />The project site is located near Columbine Avenue and Halladay Street in Santa Ana, California. <br />The site is bounded by existing parking lots to the west, Columbine Avenue to the north, Newport <br />Freeway (55 Freeway) to the east, and existing parking lots to the south The site is relatively <br />level. <br />The site o f the proposed Data Center is currently occupied by parking lots. <br />3.0 PROJECT DESCRIPTION <br />The First American Corporation plans to build a base-isolated two-story Data Center. Mr. Kenny <br />Lee of Nabih Youssef & Associates, the project structural engineer, provided us with anticipated <br />column loads for the proposed Data Center. <br />The footprint area of the proposed Data Center is about 23,000 square feet. According to Mr. Lee, <br />typical maximum column loads for the Data Center are on the order of 750 kips (450 kips dead <br />load plus 300 kips live loads). We understand that the finish floor of the proposed Data Center <br />will be established at Elevation 43. The proposed finished grade around the proposed Data Center <br />will be about Elevation 41 to 42. The foundations are planned at Elevation 34. <br />4.0 EXPLORATIONS AND LABORATORY TESTS <br />Our current investigation consisted of drilling three borings and advancing two Cone Penetration <br />Tests (CPTs) to depths of about 60 to 75 feet below the existing ground surface (bgs). <br />Boring and CPT locations are shown on Figure 2.2. Details and borings logs of our explorations <br />are presented in Appendix A. The CPT results are presented in Appendix B. <br />2