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8. Prior to construction, submit information on the method to address and mitigate <br />collapse or subsidence of surface roadways, adjacent utilities during drilling, reaming <br />and installation of the pipe. <br />9. The Contractor shall maintain a logbook that includes driller notes and records for <br />bores using steering and tracking system. Data will include pipe number, depth, pitch, <br />steering commands, and notes. Log must also include rig performance parameters <br />(thrust, pullback, torque, drilling fluid circulation, and drilling fluid composition), <br />ground conditions, obstructions encountered, time shift started and ended, and footage <br />during the shift). Logbook will include information on drilling fluid (composition, <br />viscosity, density). This logbook must be available for review throughout the project <br />and must be submitted to the Engineer and the Owner at completion of project. <br />10. At the completion of the horizontal directional drilling, the pipe log indicating the <br />horizontal and vertical position at 15 or 30 foot intervals along the pipe to confirm <br />conformance with the depth and line shown on the Drawings. This submittal shall <br />include the type and manufacturer of tracking equipment used, date of most recent <br />shop calibration record, and the method to ensure the data was captured. No payment <br />for any footage of pipe will be made until its corresponding log is submitted to the <br />Engineer and the Owner. <br />1.4 QUALITY ASSURANCE <br />A. Qualifications <br />1. At the request of the Owner or Engineer, the Contractor shall submit data on the <br />jacking and auger boring company's experience <br />a. Provide the years of experience and an installation list including the following <br />information_ City or District, project name and location, contact person and <br />phone number, contact amount, project environment (river crossing, urban area <br />or rule), date of installation, pipe diameter, material, and maximum length of <br />each bore <br />B. Regulatory Requirements <br />I . Horizontal Directional Drilling <br />a. Conform to Federal and State regulatory requirements for excavations, boring <br />andjacking <br />b. Obtain permit prior to starting construction and conform to requirements of <br />permit <br />c. Verify with Owner prior to obtaining permit(s) and any construction activity <br />2. Geotechnical Data <br />a. Geotechnical Data may or may not be provided for this project; it is the <br />responsibility of the contractor to make him /herself of the conditions of the site <br />b. If Geotechnical Data is made available to the Contractor by the Owner, the <br />Engineer, or the Geotechnical Consultant are used by the Contractor, the <br />Contractor shall assume all risks resulting from actual conditions differing from <br />conditions set out in the Geotechnical Data <br />3. Notifications <br />a. Notify CDOT and Owner /Engineer prior to construction <br />b. It is the responsibility to verify the necessary notification time with CDOT <br />33 05 23.13 - 2 <br />