3003 W CASINO RD 1992 SITE DEV 2018-01-01 MF Import

DRAFT APPENDIX A SUBSURFACE EXPLORATIONS AND LABORATORY TESTING SUBSURFACEEXPLORATIONS We explored the subsudace conditions across the site by excavating 16 trst pits and drilling 6 borings. TSe test pits were excavated to depths ranging from 6 to 17 feet on June 4 and 5, 1992 using a track-mounted hydraulic ezcavator (Flitachi EX20pLC)provided by M. A. Segale, Inc. The excavations were backFlled upon wmple:ioa using the excavated soil compacted with the excavator bucket. The borings were drilled to depths ranging from 12.5 to 38 feet on June 2 and 3 using a wck-mounted, continuocs flight, hollow-stem auger drill provided by GeoBoring and Development, Inc. The borings were backtilled upon completion using a mixture of cuaings and bentonite. A piezometer waa instailed to monitor ground water Fluctuations in Boring 1. The explurations were continuously monitored by a geotechnical engineer or an engineering geologist with our firm who classified the sotls encountered, obtained representaHve soil samples, observed ground water seepage conditions and prepazed a detailed log of each exploration. Soils encountered were clazsified in general accordance with the classifiwtion system described in Figure A-I. A Icey to the symbols used on the ezploration logs is presented in Figure A-2, and the ezploration logs aze presented in Figures A-3 through A-17. The exploration logs are bued on our interpretation of the field and laboratory data and indicate the various q�pes of soil encountered. They also indicate the depths at which these soil types or their chazacteristics change, although the change might actually be gradual. If the change occurred between samples in the borings, it waz interpreted. 'Ibe soil consistencies noted on the ezploration logs are bued on the conditions observed, our ezperience and judgement, and in the caze of the borings, blow count data obtained during drilltng. Relattvely undisturbed samples were obtained during drilling using a 2.4-inch inside diameter (Darnes and Moore) split-barrel sampler. The sampler was driven 16 inches by a 300-pound weight falling a vertical distance of approximately 30 inches. The number of blows required to drive the sampler the laat 12 inches, or other indicated distance, is recnrded on the boring logs. It should be noted that �he biow counts are not representative (will be o��erstated) of the formation density when gravel or larger materials are encountered. LABORATORY TESTING All soil samples were brought to our laboratory for futther examination. Selected samples were tested to determfne their moisture content and dry density. The results of the moisture content and dry density tests performed on samples obtained during drilling are presented on the boring logs. The results of moisture content tests performed on disturbed samples obtained in the test pit explorations are presented in Figure A-18. G e o E n ¢ i n e e r i A - 1 Filt No.01I0.150�R10/062293