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City of Centerville <br /> Project SP-07-03738 <br /> November 29,2007 <br /> Page 13 <br /> Concrete delivered to the site should meet the temperature requirements of ASTM Test Method C94.til the <br /> Concrete should not be placed on frozen subgrades, Concrete should be protected from freezing <br /> necessary strength is attained <br /> E. Procedures <br /> E.1. Penetration Test Borings <br /> The penetration test borings were drilled with a truck-mounted drill rig equipped with hollow-stem auger.. <br /> The borings were performed in accordance with ASTM Test Method D 1586. Penetration test samples <br /> were taken at 2 1/2-or 5-foot intervals. Actual sample intervals and corresponding depths are shown on <br /> the boring logs, <br /> E.2. Materials Classification and Testing <br /> E.2.a. Visual and Manual Classification <br /> Materials encountered in the borings were visually and manually classified in accordance with ASTM <br /> Test Method D 2488. A chart explaining the classification system is attached. Samples were sealed in <br /> jars or bags and returned to our facility for review and storage <br /> E.2.b. Laboratory Testing <br /> Laboratory tests were performed in accordance with ASTM procedures. <br /> E.3. Groundwater Measurements <br /> The drillers checked for groundwater as the borings were advanced,and again after auger withdrawal. <br /> The boreholes were then backfilled. <br />