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moisture condition (dry) these soiLs to achieve the recommended compaction. We <br /> recommend that fill and backfill be placed in lifts not exceeding 4 to 12 inches,depending. <br /> on the size of the compactor and materials used. <br /> 5.4 Testing <br /> We recommend density tests of backfill and fills placed for the new parking lot. Samples <br /> of the proposed materials should be submitted to our laboratory prior to placement for <br /> evaluation of their suitability and to determine their optimum moisture content and <br /> maximum dry density(Standazd Proctor). <br /> 5.5 Winter Construction <br /> If site grading and construction is anticipated to proceed during cold weather, all snow <br /> and ice should be removed from cut and fill areas prior to additional grading and <br /> placement of fill. No fill should be placed on frozen soil and no frozen soil should be used <br /> as fill or backfill. <br /> Concrete delivered to the site should meet the temperature requirements of ASTM and/or <br /> AQ. Concrete should not be placed on frozen soil. Concrete should be protected from <br /> freezing until the necessary strength is obtained., Frost should not be permitted to <br /> penetrate below the footings. <br /> 6.0 PROCEDURES <br /> 6.1 Soil Classification <br /> The drill crew chief visually and manually classified the soiLs encountered in the borings <br /> in general accordance with ASI'M D 2488,"Description and Identification of SoiLs(Visual- <br /> Manual Procedure)". Soil teraunology notes are included in the Appendix. The samples <br /> were returned to our laboratory for review of the field classification by a geotechnical <br /> engineer. Samples will be retained for a period of 30 days. <br /> 6.2 Groundwater Observations <br /> Immediately after taking the final samples in the bottom of the borings, the holes were <br /> checked for the presence of groundwafier. Immediately after removing the augers from <br /> the borehoie the holes were once again checked and the depth to water and cave-in depths <br /> were not�ed. <br /> 7A GENERAL <br /> 7.1 Subsurface Variations <br /> The analyses and recommendations presented in this report aze based on data obtained <br /> from a linuted number of soil borings. Variations can occur away from the borings,the <br /> nature of which may not become appazent until additional exploration work is completed <br /> 7 <br />