Gas System Sulfur Survey Results
| Date | Total Sulfur Maximum |
Total Sulfur Average all sites | ||
| PPMv | gr/100 scf | PPMv | gr/100 scf | |
| 2012 | ||||
| Fourth Quarter 2012 | 4.41 | 0.262 | 2.72 | 0.162 |
| Third Quarter 2012 | 4.00 | 0.237 | 2.53 | 0.150 |
| Second Quarter 2012 | 4.99 | 0.296 | 2.73 | 0.162 |
| First Quarter 2012 | 5.82 | 0.346 | 3.04 | 0.180 |
| 2011 | ||||
| Fourth Quarter 2011 | 5.19 | 0.308 | 2.80 | 0.166 |
| Third Quarter 2011 | 5.53 | 0.328 | 3.49 | 0.205 |
| Second Quarter 2011 | 11.11 | 0.659 | 3.00 | 0.178 |
| First Quarter 2011 | 11.46 | 0.680 | 2.57 | 0.152 |
| 2010 | ||||
| Fourth Quarter 2010 | 7.65 | 0.454 | 3.20 | 0.190 |
| Third Quarter 2010 | 5.77 | 0.342 | 2.75 | 0.163 |
| Second Quarter 2010 | Unavailable | Unavailable | ||
| First Quarter 2010 | 10.03 | 0.595 | 2.55 | 0.151 |
| 2009 | ||||
| Fourth Quarter 2009 | 10.03 | 0.595 | 2.77 | 0.164 |
| Third Quarter 2009 | 12.01 | 0.713 | 3.14 | 0.186 |
| Second Quarter 2009 | 5.50 | 0.326 | 2.79 | 0.166 |
| First Quarter 2009 | Unavailable | Unavailable | ||
| 2008 | ||||
| Fourth Quarter 2008 | 10.25 | 0.608 | 3.06 | 0.182 |
| Third Quarter 2008 | 7.45 | 0.442 | 3.89 | 0.231 |
| Second Quarter 2008 | 7.80 | 0.463 | 4.12 | 0.224 |
| First Quarter 2008 | 8.01 | 0.475 | 3.82 | 0.227 |
| 2007 | ||||
| Fourth Quarter 2007 | 7.79 | 0.462 | 3.79 | 0.225 |
| Third Quarter 2007 | 7.10 | 0.421 | 3.44 | 0.204 |
| Second Quarter 2007 | 5.50 | 0.326 | 3.31 | 0.197 |
| First Quarter 2007 | 11.20 | 0.664 | 3.81 | 0.226 |
| 2006 | ||||
| Fourth Quarter 2006 | 8.80 | 0.522 | 3.86 | 0.223 |
| Third Quarter 2006 | 7.88 | 0.466 | 4.05 | 0.241 |
| Second Quarter 2006 | 6.90 | 0.408 | 2.70 | 0.160 |
| First Quarter 2006 | 5.37 | 0.318 | 2.45 | 0.145 |
