These shots are taken from atop the northwest parapet. The combined elevation from atop the wall to the floor of the trench (running along the sewer line) is approximately 10 feet. From this vantage point you can see all existing piers. Running parallel to the exposed sewage line and directly behind the foreground foundation pier is the southern most extremity of Phase I. Everything north of that pier will be dug to a depth of six feet.
Photographs show the overall lay of the site and the progress of the excavation as of July 8 2011.
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