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MONETSTL Project No. 0010771 Appendix A 7�Sdng LabS Page A.1 APPENDIX A FIELD AND LABORATORY INVESTIGATIONS Field Investigation ` The field investigation consisted of a surface reconnaissance and a subsurface exploratory program. Four 4-inch exploratory borings and two percolation test borings were advanced. The boring locations are shown on the site plan. The soils encountered were logged in the field during the exploration and, with supplementary laboratory test data, are described in accordance with the Unified Soil Classification System. Modified standard penetration tests were performed at selected depths. This test represents the resistance to driving a 2 ''/cinch diameter core barrel. The driving energy was provided by a hammer weighing 140 pounds falling 30 inches. Relatively undisturbed soil samples were obtained while performing this test. Bag samples of the disturbed soil were obtained from the auger cuttings. All samples were returned to our Sacramento laboratory for evaluation. Laboratory Investigation The laboratory investigation was programmed to determine the physical and mechanical properties of the foundation soil underlying the site. Test results were used as criteria for determining the engineering suitability of the surface and subsurface materials encountered. In-situ moisture content, dry density, consolidation, direct shear, R-value, Atterberg Limits, and sieve analysis tests were determined for the undisturbed samples representative of the subsurface material. These tests, supplemented by visual observation, comprised the basis for our evaluation of the site material. ------------------------- The logs of the exploratory borings and laboratory determinations are presented in this Appendix. r 1417 No.Market Blvd.,Suite 1 • Sacramento,CA 95834 • (916)568-5858 • Fax: (916)568-5813