Tag Archives: Tier 4 Emissions

Cat’s Perspective on Tier 4 Emission Solutions

Effective January 1, 2011 mobile engines greater than 130 bkW (175 bhp) and non-emergency stationary engines less than 10 liters per cylinder and greater than 130 bkW (175 bhp) are required to meet Tier 4 Interim emissions regulations.

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The New Rules: How Some Jurisdictions Are Interpreting EPA Tier 4 Emission Requirements

On January 1, 2011, new interim Tier 4 emission requirements commenced. The more stringent emission requirements are in deliberation this year, though a specific time for resolution is unspecified.  Please be advised that permit issuance could be delayed and the new Tier 4 … Continue reading

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