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GREELEY, Colo. - A well in Greeley will be allowed to begin drilling and fracking again on Friday after being shut down in June.
NGL Water Solutions was shut down for 20 days after allegedly causing an earthquake.
Officials are letting the company resume limited operations, at lower pressures and lower volumes.
"Continued use of the injection well will be reviewed and may be halted if seismic events within a 2.5-mile radius of the well occur at or above a magnitude of 2.5 -- the U.S. Geological Survey’s default threshold for displaying seismic events," Colorado Oil and Gas Conservation Commission said. "CU geophysicists will continue to monitor the location, and the COGCC has required NGL to install a permanent seismometer near the well to allow for real-time monitoring."
The Colorado Oil and Gas Commission said, "We are proceeding with great care and will be tracking activities at this site closely. We are moving slowly and deliberately as we determine the right course for this location."
The well, SWD C4A, is located east of the Greeley-Weld County Airport. It was permitted by COGCC in March 2013 and injection began in April of 2013.
The Colorado Oil and Gas Conservation Commission is investigating two earthquakes in Greeley -- 2.6-magnitute earthquake June 23 and 3.4-magnitude earthquake May 31.
The United State Geological Survey has released a new map showing the earthquake danger in Colorado increasing. The risk on the Eastern Pains has gone up slightly while the Western Slope still has the highest earthquake danger in Colorado.
The lengthy report cites fracking as a possible cause for the increase in earthquakes over the past six years, calling it a well-known phenomenon that has become a more serious topic since the last hazard map was produced in 2008.