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i ! Holnam, Inc. Terracon ELI Project No. 20945006 3. Embankment should not be placed over frozen ground. • Shrinkage: For balancing grading plans, estimated shrink or swell of soils and bedrock when used as compacted fill following recommendations in this report are as follows: Material Estimated Shrink)-) :Swell (+l Based on ASTNI D698 On-site bedrock materials: Sandstone ................................ + 10 to + 1 ~% • Slopes: 1. For permanent slopes in compacted fill areas based on the slope stab lily analyses, recommended maximum configurations for on-site materials are as follows: Material Maximum Slope Horizontal:Verfical Overburden sandstone material ' .................... 1/.:1 GENERAL COMMENTS It is recommended that the Geotechnical Engineer be retained to provide a general review of final design plans and specifications in order to confirm that grading recommendations have been interpreted and implemented. In the event that any changes of the proposed project are planned, 7 the conclusions and recommendations contained in this report should be reviewed and the report J modified or supplemented as necessary. 1 The Geotechnical Engineer should also be retained to provide services during the grading phase J of the work. Construction testing, including field and laboratory evaluation of fill ma':erials should J be performed to determine whether applicable project requirements have been met. It would be logical for Empire Laboratories, Inc. to provide these additional services since sae are most qualified to determine consistency of field conditions with those data used in our analyses. 5