Bid Bond Amount: 10% All excavation shall be unclassified and no extra payment will be made for rock, boulders, shale, timbers, logs, old foundations, masonry or other natural or artificial materials encountered in the trenching operations except for those underground structures defined in Section 2.3B, Paragraph 1.02. The Contractor shall make personal examination of the locations in which the pipelines are to be constructed to determine for himself the extent and of the rock that may be encountered. The Contractor acknowledges there may not be sufficient time to perform pre-bid borings to determine the nature of the subsurface conditions and that the Contractor may have to rely on its visual inspection of the site when making a determination as to the character of the subsurface conditions. No information regarding subsurface conditions along the routes of the pipelines will be given by the owner. The Contractor shall assume ail risks associated with the composition of the subsurface materials and the ease or difficulty of excavation. The Contractor shall not at any time claim a misunderstanding regarding the depth or character of the excavation to be made or in the nature of the materials to be encountered. The Contractor shall perform his own independent investigation of field conditions, including the drilling of test borings or other investigation, as he may deem necessary to perform this work. Any associated costs for test borings or other required investigation should be included in the Contractor's Unit Price Bids for pipe. SOIL EROSION AND SEDIMENTATION CONTROL MEASURES The Contractor shall perform all required Soil Erosion and Sedimentation Control measures as defined on the Contract Drawings and in accordance with PA Clean Stream Law (35 P.S. -- 691.1001) and regulations at 25 PA Code Chapter 102. The Contractor shall notify the Allegheny County Conservation District (A.C.C.D) at least seven (7) calendar days before construction of his intent to begin.
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