Wednesday, July 7, 2010

Compressor Station has history of fugitive emissions

The Colleyville Courier reports the TCEQ found no violations at the Grapevine Mills well and the Cotton Belt Compressor station located at the 121, 114 and 635 location.

Interesting that this same location had similar problems back in early 2009.

By comparison, drilling activities at the airport or in Grapevine prompted only one complaint since 2007, according to a TCEQ database. The complaint reported strong odors coming from the compressor station over a two-week period in March 2009, but no violations were found by TCEQ.

We received an e-mail about the problem in July of 2009. It was determined that the compression station had a problem. Although the levels where not above the TCEQ benzene esl (effects screening levels) levels, it was reported that they were close and warranted attention and action.

DFW did their own testing with an independent lab.

The following is from the previous post we did in July 2009.

Deja Vu, yet the TCEQ didn't find anything. Go figure!

This summary of DFW Environmental Affairs Department [EAD] recent response actions to odor complaints associate with Chesapeake Energy natural gas mining project being conducted at DFW Airport provides you an update of DFW Environmental Affair’s efforts to identify and reduce sources of odors and provides you a copy of air grab sample laboratory results for your edification.

EAD staff have confirmed natural gas odors emanating from the Cottonbelt Compressor Station consistent with recent 3rd party complaints. EAD collected air grab samples from the compressor station pad on two occasions to determine the constituents and concentrations of contaminants of concern that may be associated with these presenting natural gas process related odors. EAD concerns were shared with Chesapeake Energy site operations personnel as well as Chesapeake's Fort Worth office project manager. A subsequent site meeting confirmed that odors were emanating from both the glycol and BTEX process treatment units. In response to EAD and Chesapeake Energy operations personnel discussions, Chesapeake Energy enacted a reconfiguring of process piping in an effort to mitigate the odorous fugitive emissions. In response to a subsequent complaint from nearby residents, EAD conducted a second round of air sampling at the suspect Cottonbelt Compressor Station. Laboratory analysis [attached pdf files] indicated the presence of very low concentrations of some of the same constituents evident in the first round of air grab samples.

None of the resultant emission concentration levels are considered by OSHA or NIOSH as a worker safety concern. One sample approached, but did not exceed, the Texas Commission on Environmental Quality [TCEQ] Effects Screening Level (ESL) for benzene. This ESL is not a regulated limit. We are committed to reducing sources of emissions even in the absence of compelled regulatory drivers. EAD is also responsive to a TCEQ enforced Nuisance Odor Rule in the interest of mitigating odors generated by sources located on Airport.

DFW Airport’s Board of Directors, executive and senior management team is committed to beyond compliance environmental stewardship Airport-wide. DFW’s Environmental Management System (EMS) provides an umbrella of environmental compliance, and beyond compliance response action policies, procedures, monitoring and verification protocols applicable to DFW Board, tenant and contractor activities across the board. Chesapeake’s Fort Worth based project manager has stated that Chesapeake is working to eliminate the odor sources to the extent possible. EAD staff have been assured by Chesapeake Energy that Chesapeake has the capability and resources to effectively address sources of fugitive emissions. EAD staff research confirmed that compressor station emissions are a common problem throughout the oil & gas industry; and that there are mitigation measures available to reduce industry related sources of emissions.

I hope you find this summary of efforts in progress and laboratory results helpful. EAD will continue to press Chesapeake to further identify and mitigate fugitive emissions going-forward and to deploy effective odor mitigation technology and best management practices. Please let me know if you require additional information or clarification at this time.

Sincerely, Dan Bergman, M.S., J.D.,
Vice President Environmental Affairs

1 comment:

Mary said...

How can we trust anything the TCEQ says. They just raised their esl's too. Hey TCEQ, lets do away with all the esl's and when people drop dead, then you will know there is a problem!