As part of SkyTruth's ongoing work to illustrate drilling through images, mapping and raw data analysis, analysts have produced a new map illustrating the startling number of improperly abandoned oil and gas wells in Pennsylvania.
Drilling in the state goes as far back at 1859 but it was not until the 1920s that legislation required all new wells to be plugged at production's end, and not until the 1960s that all wells had to be permitted.
As a result, thousands of oil and gas wells with no recorded location information litter the state, many that were never properly sealed (plugged) or are in varying states of deterioration; 2,184 abandoned and/or orphan wells in McKean County alone.
Read more: http://blog.skytruth.org/2011/10/legacy-of-past-over-7000-abandoned.html?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+Skytruth+%28SkyTruth%29#ixzz1bI2QPyEC
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