Owner Liberty Property Trust, Malvern, PA Geotechnical Engineer Pennoni Associates Inc., Lehigh Valley, PA Soil Mixing rior to construction of a 5-story parking garage for the PP&L Plaza in Allentown, PA, the garage site was found to consist of 25 feet of inorganic silt with inter-bedded soil layers of dense sand and gravel over- lying the average quality pinnacle limestone bedrock. The new garage structure would impart a load of approximately 8

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