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Submittals Submit technical data for equipment including clay slurry material, method of installation with working drawings, and proposed sequence of construction for approval by the Engineer. Prior to approval for directional boring, the Contractor must submit the names of supervisory field personnel and historical information of directional boring experience. In addition, the Contractor must submit for approval nameplate, data for the drilling equipment, mobile spoils removal unit, and MSDS (Material Safety Data Sheets) information for the drilling slurry compounds. The Contractor is required to bring to the attention of the E- ineer any known design discrepancies with actual tunneling methods that the Contractor will be performing. This shall be stated in writing to the Engineer no later than the pre -construction meeting. Provide shop drawing submittal and sample of pipe, fused joint, and trace wire. Material Pressure mains installed by directional bore shall be polyethylene (HDPE) meeting AWWA and Indian River County Standards as described in Section 262.7 of these specifications. Installation Installation shall be in a trenchless manner producing continuous bores. The tunneling system shall be remotely steerable and permit electronic monitoring of tunnel depth and location. Accurate placement of pipe within a ± 2 -inch window is required both horizontally and vertically. Continuous monitoring of the boring head is required, including across open water if necessary. The directional boring Contractor shall submit certification, by a Professional Engineer or Professional Land Surveyor licensed in the State of Florida, that the directional boring has been performed in accordance to the construction drawings, and shall provide signed and sealed record drawings. Record Drawings (As -built) shall be provided both in electronic format and hard paper copy. Tunneling shall be performed by a fluid -cutting process (high pressure -low volume) utilizing liquid clay, i.e. bentonite. The clay lining will maintain tunnel stability and provide lubrication in order to reduce frictional drag while the pipe is being installed. in addition, the clay fluid must be totally inert and contain no environmental risk. The Contractor must also have a mobile vacuum spoils recovery vehicle on-site to remove the drilling spoils from the access pits. The spoils must then be transported from the job site and be properly disposed of off the site. Under no circumstances shall the drilling spoil be permitted to be disposed of into sanitary, storm, or other public or private drainage systems. Spoils may be transported to the County's Solid Waste Facility and the cost of disposal shall be borne by the County. 02320-2 DiDIVISION 2102.320 Installabon by Dfredional Bonng.doc