November & December 2012
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Gas Cap Testing and Replacement
Program Results

More than 19 percent of cars and light trucks tested in northwest Ohio and southeast Michigan have a leaking or missing gas cap. That was the finding of the 2012 Gas Cap Testing and Replacement program which checked 624 vehicles this summer and replaced 120 faulty caps. This was up considerably from last year where testing of more than 700 vehicles showed a faulty rate of about 10 percent. Program managers say that failure rate of gas caps is strongly correlated with the age of the vehicles. Older cars tend to be the ones that have leaky gas caps. See the complete report on www.tmacog.org here. Links to additional air quality documents and information is on the Air Quality Committee page here.

The testing and replacement program is a project of TMACOG and the City of Toledo Division of Environmental Services. For 12 years, a team of summer interns tests cars and trucks at gas stations throughout the region. A quick vacuum test determines how well the cap fits. All leaky caps are replaced with new equipment.

The purpose of the Gas Cap Testing and Replacement Program is to reduce evaporative emissions from light-duty, gasoline-powered vehicles and also to share information about air quality. At testing sites, the testing staff informs the participants about ground-level ozone and shares information about steps that the general public can take to prevent air pollution. Proper vehicle maintenance is one important step that drivers can take to reduce emission of unhealthy vapors.

The 120 caps replaced this summer will prevent emission of approximately 23,880 pounds of pollutants. The motorists who got new caps will save approximately two tanks of gas each per year. Testing took place in Bowling Green, Holland, Lambertville, Oregon, Perrysburg, Rossford, Sylvania, Waterville, and Whitehouse. The program is made possible with the cooperation of True North/Shell, Barney’s, Kroger stores, and Circle K, which hosted testing events.



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