The United Stated Environmental Protection Agency (EPA) introduced the first emission standards for off-road engines more than 15 years ago. With each new stage or tier, EPA standards have established lower allowable emissions. EPA regulations are general consistent with European, Japanese and Canadian rules, demonstrating a cooperative international approaching to addressing this issue.
What is Tier 4?
Tier 4 emission standards present substantial reductions of the main pollutants in emissions: carbon monoxide, hydrocarbons, nitrogen oxides and particulate matter. Emission limits are particularly focused on curbing airborne nitrogen oxides and particulate matter. These standards represent the biggest step toward reach near-zero emissions from heavy equipment.
Why is the EPA making these changes?
According to the EPA, off-road engines are responsible for 46 percent of particulate matter and 25 percent of nitrogen monoxide and nitrogen oxide emissions from all mobile sources nationwide. When inhaled repeatedly, these small particles may aggravate asthma and allergies or cause other serious health problems.
What effect will this have on buying and selling used heavy equipment?
Until the machines with the final requirements for Tier 4 standards start making their way into the “used heavy equipment” marketplace, there won’t be any drastic changes. However, once these machines do hit the auction floors, you can expect the prices of the equipment to increase. This could be an issue if you conduct business overseas. Many countries outside of the United States do not have to imply to these standard requirements and have no reason to pay for the extra costs that will come along with these newer-used machines.
When will the final Tier 4 requirements take effect?
The final requirements are projected to take effect starting sometime in early 2014.
All data credited to Tim O’Brien at www.constructionbusinessowner.com .