Trenchless Excavations. [1] Utilities installed by a trenchless excavation method (directional drilling, jacking, slick boring, etc.) shall be reviewed by Buckeye on a case-by-case basis. [2] Buckeye reserves the right to select the method of crossing for the proposed utility. [3] A minimum clearance of 60 inches (5 feet) below the pipeline is required. [4] For directional drilling operations, a tracking system is required to verify the exact location of the drill head. [5] For perpendicular crossings, a 4 feet by 4 feet excavation window, 24 inches below the pipeline is required for visual inspection of the pipeline to ensure the drill (or bore) does not impact the pipeline. [6] Blind boring is not permitted within Buckeye’s right-of-way. [7] When trenchless excavations are authorized by Buckeye parallel to and within 10 feet of an existing pipeline, observation holes shall be excavated at 25-foot intervals to monitor the progress and horizontal/vertical location of the drill head. [8] Buckeye must be provided with an advance copy of the horizontal directional drill (HDD) plan for the trenchless excavation which specifies how the HDD will be tracked, monitored and controlled at least two weeks before work is to commence. The plan must detail preventative measures to prevent conflicts with Buckeye’s existing facility. The plan must state the planned HDD bore diameters, rod lengths, xxxx diameters, method of guidance, method of drill head tracking, etc. Additionally, the plan needs to include procedures for continuous monitoring and reporting of the drill head location, and state the appropriate vertical and horizontal deviation tolerances for the HDD operations in accordance with API RP 1172 – “6 Final Design”. The procedure must include reporting requirements and procedures to correct or shut down the HDD trajectory should the operation exceeds the established tolerances. Buckeye Operations must be notified immediately if tolerances are compromised and should be involved in the recommencement of operations after tolerances are exceeded.
Trenchless Excavations. [1] Utilities installed by a trenchless excavation method (directional drilling, jacking, slick boring, etc.) shall be reviewed by Buckeye on a case-by-case basis. [2] Buckeye reserves the right to select the method of crossing for the proposed utility. [3] A minimum clearance of 60 inches (5 feet) below the pipeline is required. [4] For directional drilling operations, a surface wire tracking system is required to verify the exact location of the drill head. [5] A 4 feet by 4 feet excavation window, 24 inches below the pipeline is required for visual inspection of the pipeline to ensure the drill (or bore) does not impact the pipeline. [6] Blind boring is not permitted within Buckeye’s right-of-way.
