FLOOD ZONE - 1299 N Parsons Pl - Plan

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2 Parsons-1-01 3.1 FIELD EXPLORATION PROGRAM The field exploration program was performed and involved drilling of one hand auger boring to depth of 15 feet below existing ground surface. Soil materials encountered were visually classified and logged in accordance with the Unified Soil Classification System. The approximate location of the boring is shown on Figure 2. Log of subsurface conditions encountered in the boring was prepared in the field by an engineer. Soil samples consisting of relatively undisturbed brass ring samples were collected at 3 and 5-foot depth intervals and were returned to the laboratory for testing. One bulk sample was collected at depths of 1 to 5 feet below ground surface (bgs). Final boring log was prepared from the field log and is presented in Appendix A. 3.2 LABORATORY TESTING Selected samples collected during drilling activities were tested in the laboratory to assist in evaluating controlling engineering properties of subsurface materials at the site. Physical tests performed included moisture and density determination, No. 200 Wash, Atterberg limits, direct shear and corrosion. The results of the laboratory testing are presented in Appendix B. 4.0 DISCUSSION OF FINDINGS The following discussion of findings for the site is based on the results of the field exploration and laboratory testing programs. 4.1 SITE AND SUBSURFACE CONDITIONS Generally, the subsurface conditions encountered in our boring consisted predominately of silty sand and sandy clay to the maximum depth explored (15 feet bgs). Fill material was encountered within our exploratory boring to depth of approximately 3 feet below the existing ground surface. Fill materials consisted of silty sand. Native materials were observed beneath the fill within our exploratory boring. These materials were observed to be medium dense silty sand, firm to stiff sandy clay. For more detailed descriptions of the subsurface materials refer to the boring logs in Appendix A.