Results are summarized of three supplementary test borings made for the investigation of subsoil conditions in Section G001 of Addison Route at the crossing of the planned METRO tunnels beneath the Penn Central Railroad trackage near the intersection of Benning Road and Interstate 295 of the Washington Metropolitan Area Metro system. The report contains a section across the METRO tunnels which incorporates boring and laboratory test information, logs of the supplementary test borings, and a text commenting on subsurface conditions.


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