Description
The State of North Dakota Public Service Commission is seeking engineering, design, and construction services to permanently close an abandoned underground coal‑mine portal near Cartwright, ND, and to remediate associated slope‑stability problems. The contractor must perform site investigations, develop a permanent closure design, obtain permits, execute construction (excavation, back‑filling, sealing, grading, drainage, and reclamation), and provide a two‑year warranty/maintenance period. An optional “void‑detection” study covering ~17,000 sq ft is also available for separate pricing.
• Scope includes geotechnical/structural engineering, slope‑stability analysis, excavation, back‑fill, drainage, erosion control, and site reclamation.
• Must be licensed as a Professional Engineer in North Dakota (or partner with a licensed PE) and comply with Davis‑Bacon prevailing‑wage rules, Buy‑America, and related federal requirements.
• Fixed‑price contract with design work due by early March 2027 and construction limited to 1 Jun 2027‑31 Aug 2027; warranty runs through 31 Dec 2029.