Remainder of Backfill. Selected material from the excavation shall be used for backfilling around the structure. Trash shall not be allowed to accumulate in spaces to be backfilled. Backfill around the structure shall be placed in uniform layers to the level of the water table. Above the water table, backfill material shall be placed in 8-inch layers and compacted to a minimum of 95 percent of maximum density as determined by AASHTRO Designation T 180. Backfilling shall be carried to the finished grades shown on the Drawings.
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