WV HB3331

Aligns West Virginia diesel-powered equipment regulations for underground coal mines with federal MSHA standards under 30 CFR Part 7, Subpart E, prohibiting state rules from being more burdensome than federal requirements

Eliminates site-specific testing requirements for diesel equipment once the equipment has received federal MSHA approval

Removes the state director's authority to independently approve diesel power packages; equipment meeting federal standards is automatically deemed approved for use in West Virginia mines

Reduces maintenance inspection requirements by eliminating the 200-hour maintenance interval and instead requiring only weekly examinations consistent with federal 30 CFR 75.1914(f) standards

Repeals four existing code sections (§22A-2A-402 through §22A-2A-405) related to state-specific diesel power package approval, exhaust emissions control systems, and emissions monitoring requirements