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materials elastic limits. Proper pipe handling, cradling, bending minimization, and <br />consistent insertion velocity shall be recorded. <br />10. Any bits, drills, reamers, or other tools lost or stuck in the hole shall be removed at the <br />Contractor's expense. If tools cannot readily be removed, Contractor may at <br />Contractor's option abandon the hole. The Contractor will seal the borehole and re- <br />drill the crossing. No payment shall be made for any lost equipment, material, or <br />work on abandoned holes. <br />11. Drilling fluid to be used to facilitate the installation of the pipe shall be adjusted <br />within acceptable limits such that ground heaving and subsurface cavity formation <br />through erosion are prevented. <br />12. A variation greater than ± 18 inches from the horizontal and ± 0.5 percentage points <br />from the designated grade may be sufficient reason for the rejection of the pipe, and <br />the pipe shall be re -bored to proper grade if so directed by the Engineer at no cost to <br />the Owner. <br />13. The alignment shown on the Drawings shall be adhered to unless existing physical <br />obstructions prevent otherwise. The number of setups and the length of pipe <br />installation per set up as shown on the Drawings is merely a suggested layout to <br />achieve the alignment shown on the Drawings. The Contractor shall be ultimately <br />responsible for determining the number of set ups required to install the pipe to the <br />alignment shown on the Drawings. The number of setups shall be incidental to the <br />work. <br />14. The Contractor shall supply portable mud tanks or construct temporary mud pits to <br />contain excess drill fluids during construction. Spent drilling fluids and cuttings shall <br />be confined to the entrance and exit pits. The Contractor shall take all necessary <br />precautions to minimize the damage to the adjacent properties. Any drilling fluid that <br />enters the pipe shall be removed by flushing or other suitable methods. Upon <br />completion of the bore, contractor will dispose of any drill cuttings and excess drill <br />fluids in a manner consistent with the local and state regulations. If working in an <br />area of contaminated soil, the slurry shall be tested for contamination and disposed in <br />accordance with local and state regulations. The disposal of the drilling fluids and any <br />necessary flushing of the pipe shall be incidental to the work. <br />15. The Contractor shall be responsible for cleanup and restoration, due to hydrofractures <br />from excessive pressure in the drilling fluid. Contractor shall prevent drilling fluids <br />from entering streams or other water bodies and municipal storm or sanitary sewer <br />lines (unless prior approval is obtained from the Owner). No additional payment shall <br />be made for cleanup costs required by Owner, Engineer, or regulatory agencies due to <br />loss of drilling fluid. <br />16. fits excavated to permit connection of bored pipe shall be backfilled, and disturbed <br />areas shall be restored to their original state or better. Sections of sidewalks, curbs, <br />and gutters or other permanent improvements damaged during horizontal directional <br />drilling operations shall be repaired or replaces at the Contractor's expense. The <br />backfilling of the boring and receiving pits shall be incidental to the work. <br />END OF SECTION <br />330523.13 -5 <br />