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Oil and Gas at Your Door? (2005 Edition) - Earthworks

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STAGES OF OIL & GAS DEVELOPMENT<br />

• <strong>Oil</strong>, gas, <strong>and</strong> salt w<strong>at</strong>er can leak from ab<strong>and</strong>oned, unplugged, or improperly plugged oil <strong>and</strong><br />

gas wells, especially older wells, <strong>and</strong> pollute groundw<strong>at</strong>er resources, 148 or migr<strong>at</strong>e to the surface.<br />

In Colorado, <strong>Oil</strong> <strong>and</strong> <strong>Gas</strong> Conserv<strong>at</strong>ion Commission (COGCC) staff believe th<strong>at</strong><br />

increased methane concentr<strong>at</strong>ions found in w<strong>at</strong>er wells <strong>and</strong> buildings in some areas are<br />

partially due to old, improperly ab<strong>and</strong>oned gas wells <strong>and</strong> older, deeper conventional gas<br />

wells th<strong>at</strong> were not completely isol<strong>at</strong>ed. According to COGCC officials, a mitig<strong>at</strong>ion program<br />

focused on sealing old, improperly ab<strong>and</strong>oned gas wells appears to have reduced methane<br />

concentr<strong>at</strong>ions in approxim<strong>at</strong>ely 27 percent of the w<strong>at</strong>er wells sampled. 149<br />

• Additionally, improperly closed sites can be a safety hazard to humans <strong>and</strong> livestock.<br />

Tips for L<strong>and</strong>owners<br />

• Surface owners should work with st<strong>at</strong>e agencies to ensure th<strong>at</strong> ab<strong>and</strong>onment is s<strong>at</strong>isfactorily<br />

completed.<br />

• Owners may want to consider pressuring companies to use n<strong>at</strong>ive species in their re-seeding<br />

projects, as these may be better able to comb<strong>at</strong> noxious weed species.<br />

• The company should have saved topsoil during the drilling <strong>and</strong> production stages for use in<br />

their reclam<strong>at</strong>ion efforts.<br />

• Almost all st<strong>at</strong>es require companies to set aside funds to properly plug <strong>and</strong> ab<strong>and</strong>on their<br />

wells. There is more inform<strong>at</strong>ion on financial assurance (or bonding) in Chapter II.<br />

Ideally, full reclam<strong>at</strong>ion<br />

should leave veget<strong>at</strong>ion,<br />

soil, air <strong>and</strong> w<strong>at</strong>er in the<br />

same condition th<strong>at</strong><br />

existed prior to oil <strong>and</strong><br />

gas development.This<br />

rarely occurs.<br />

I-31

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