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TMC ENGINEERS INC. <br />Geotechnical, Structural and Civil Engineering <br />Add: 9542 Pacific Ave, Anaheim, CA92804. Phone: 714-829-5053; Email: Tienchu.pe@gmail.com <br /> <br />Page 4 <br /> <br /> <br />2.0 SUBSURFACE EXPLORATION AND LABORATORY TESTING <br />2.1 Subsurface Exploration <br />Our subsurface exploration consisted of drilling hand auger boring to a maximum depth of 5 <br />feet below the existing ground surface. Relatively undisturbed, bulk samples were collected <br />during drilling for laboratory testing. The approximate locations of the boring are shown on the <br />attached Site Plan. Boring logs are presented in Appendix A. <br />2.2 Laboratory Testing <br />Representative samples were tested for the following parameters: Atterberg Limits, expansion <br />index. The results of our laboratory testing along with a summary of the testing procedures are <br />presented in Appendix B. <br />3.0 SUMMARY OF GEOTECHNICAL CONDITIONS <br />3.1 Soil Conditions <br />Based on field observation and testing of sampler of the near ground surface soil. The ground <br />surface soils consist of silty very fine sand. In general, these soils exist slightly moist to moist <br />condition. <br />3.2 Groundwater <br />Ground water was not encountered at a depth of about 5 feet below the existing ground surface <br />during our subsurface investigation. <br />Based on our review of the “Historically Highest Ground Water Contours and Borehole Log <br />Data Locations, Anaheim and Newport Beach Quadrangle” per page # 22, it is estimated that <br />the highest ground water level is approximate 5 feet below the existing grade. It should be <br />noted that the CDMG ground water map is obtained by evaluating technical publications, <br />geotechnical borehole data, water-well logs dating back to the “turn-of-the-century”. This report <br />also indicated that ground water levels in the areas from 1960-1997 data are generally 5 to 50 <br />feet deeper than the earlier measured data. No specific date was provided pertaining to the <br />high ground water level. <br /> <br />Deep footings and excavations are not proposed for this site, therefore the effect due to ground