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A- 1 FE 382- 063- 00 APPENDIX A FIELD AND LABORATORY INVESTIGATIONS Field Investigation The f ield investigation consisted of a surface reconnaissance and a subsurface exploratory program. On July 20 , September 8 , and October 13 , 14 ', 15 and 18 , 1982 , eleven 6- inch exploratory borings were advanced. The boring and test pit locations are shown on Drawing 1 . The test pits were advanced on October 21 , and November 4 , 1982 . 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. A modified standard penetration test was performed at selected depths . This test represents the resistance to driving a 2 1/2- inch 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 Fresno laboratory for evaluation . Laboratory Investigation The laboratory investigation was programmed to determine the physical and mechanical properties of the foundation so-il 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 , direct shear and consolidation tests were determined for the undisturbed samples representative of the subsurface material . These tests , supplemented by our visual observation, comprised the basis f o r our evaluation of the site material . - - - - - - - - - - The logs of the exploratory borings and laboratory determinations are presented in this Appendix. The Foundatron Engineem, 'nc.