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4.0 BACKFILLING SOIL BORINGS <br />' Soil borings will be backfilled with a cement/sand grout or cement/bentomte grout. The grout <br /> will be placed m one continuous pour before its initial set from the bottom of the boring to <br /> ground surface. The grout will be emplaced by free fall through the open borehole <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> tB — 3 D 19811 APROTOCOL WPN <br /> BOYAPAN & ROSS, INC <br /> ' Environmental Scientists & Engineers <br />