Assessing Outdoor Air Near Schools
Revised Data for South Allegheny Middle/High School
EPA has replaced some data that previously were incorrectly reported. The changes are below. All values are shown in micrograms per cubic meter.
| Sample Date | Pollutant | Original Value |
Revised Value |
| Aug. 23, 2009 | Carbon tetrachloride | 1.259 | 0.781 |
| Aug. 23, 2009 | Chloromethane | 1.517 | 1.467 |
| Aug. 23, 2009 | Methyl chloroform | 0.109 | 0.082 |
| Sep. 04, 2009 | 1,3-Butadiene | 0.102 | 0.155 |
| Sep. 04, 2009 | 1,4-Dichlorobenzene | 0.072 | 0.066 |
| Sep. 04, 2009 | Methyl isobutyl ketone | 0.795 | 0.783 |
| Oct. 10, 2009 | Acetonitrile | 0.217 | 0.210 |
| Oct. 16, 2009 | 1,3-Butadiene | 0.022 | 0.020 |
| Oct. 16, 2009 | Acetonitrile | 0.265 | 0.202 |
| Oct. 16, 2009 | Bromomethane | 0.051 | 0.039 |
| Oct. 16, 2009 | Carbon disulfide | 0.168 | 0.153 |
| Oct. 16, 2009 | Carbon tetrachloride | 0.932 | 0.680 |
| Oct. 16, 2009 | Chloroethane | 0.029 | 0.026 |
| Oct. 16, 2009 | Chloroform | 0.122 | 0.107 |
| Oct. 16, 2009 | Chloromethane | 1.291 | 0.684 |
| Oct. 16, 2009 | Dichloromethane | 0.389 | 0.379 |
| Oct. 16, 2009 | Methyl chloroform | 0.076 | 0.066 |
| Oct. 16, 2009 | Methyl isobutyl ketone | 0.049 | 0.037 |
| Oct. 16, 2009 | Tetrachloroethylene | 0.149 | 0.136 |
| Oct. 28, 2009 | Carbon disulfide | 0.165 | 0.143 |
| Oct. 28, 2009 | Dichloromethane | 0.428 | 0.421 |
| Oct. 28, 2009 | Methyl isobutyl ketone | 0.057 | 0.053 |
| Nov. 03, 2009 | Benzene | 24.581 | 24.006 |
| Nov. 03, 2009 | Toluene | 6.184 | 5.807 |
| Nov. 03, 2009 | Vinyl chloride | 0.026 | 0.023 |
| Nov. 15, 2009 | Ethylbenzene | 0.252 | 0.248 |
| Nov. 15, 2009 | Toluene | 1.587 | 1.508 |