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Keywords: Categorical Exclusion, Companion Guide, CE, NEPA, CE worksheet, environmental impact
Keywords: High speed rail, noise, noise mitigation, noise regulation comparisons, cost of noise regulation compliance, noise reduction methods, cost, study, rolling stock, Northeast Corridor
Keywords: Contrast, spreadsheet, passby, high speed rail, noise regulation, rolling stock
Keywords: Fouled ballast performance, track geometry, degradation, trending, long-term wayside monitoring, waiver operations, enforcement modes, track, Autonomous Track Geometry Measurement System, ATGMS, track
Keywords: Concrete crossties; crosstie degradation; center cracks; cyclic loading; flexural performance