Spartan Engineering has provided engineering and design for many upstream pipeline crossings using conventional and slick bore techniques, as well as horizontal directional drilling.  Spartan deliverables included pipeline alignment sheet construction drawings, site-specific HDD plan and profile drawings, engineering calculations, hydrostatic test calculations, tie-in drawings, pigging facilities, construction comments, and material callouts for induction bends, pipe, valves, fittings and coating.  We worked in harmony with environmental groups, operations personnel, right of way agents and construction firms to achieve overall project success based upon multiple stakeholder input to assure the optimum design for the proposed crossing and required workspace.  HDD designs are stamped by a Registered Professional Engineer, as well as construction comments, induction bend specification, pipe specification and HDD calculations.