1. Got Gas??????
Created By: Keaton Nicholson
Nathan Boone
Peter Seymour

2. Research Question
Are the pM 2.5 levels at various gas stations significantly higher when gas is being pumped at the same stations?

3. Background Information
PM is short for particulate matter.
Measured in 2.5 microns.
Causes of pM 2.5
Liquids
Hydrocarbons
Soot
Dust
Acids from aerosols

4. Background cont…… Souces pM 2.5
Wood stoves
Combustion sources
Gasoline emissions
pM 2.5 particles are extremely microscopic
A human hair is 50 microns
pM is smaller than 2.5 microns in size
The EPA limit for pM 2.5 is less than micrograms/ cubic meter.
We spend 85% of our time indoors.

5. Hypothesis
If we you are filling up a tank at gas station, then the pM 2.5 level will be higher than when no gas is being pumped.

6. Methods DustTrack to collect data Sampled Sampled continuously
Mike’s Conoco (6 min.)
SafeWay gas station (7 min.)
Town Pump (10 min.)
Sampled continuously
Before
During
After

7. Mike’s Conoco Results

8. SafeWay Results

9. Town Pump Results

10. Improvements
We could have filled up a full tank of gas at each station.
We could have tested when the same amount of cars were at each station.
We could have done one test when it was hot and sunny and another test when it was cold and cloudy.

11. References

12. Conclusion pM 2.5 rarely exceeds the outdoor air limit
No more dangerous than taking a walk in the park.
Town Pump gives off the most emissions.

13. Questions??????