Fracking on Interchange B Delayed Pending Monday Discussion of Required Usage of Tier 4 Engines

In a Sunday, July 14 Oil and Gas webpage announcement, the City and County of Broomfield (CCOB) stated that “Extraction will not be starting completions on the Interchange B Pad on July 14, as planned. City and County of Broomfield staff will be meeting with Extraction staff on Monday, July 15 to discuss more details on Tier 2 and Tier 4 engines, as well as the performance of those engines in actual operations. Updates to follow.”

Extraction was set to begin fracking in the completions phase on the Interchange B Pad on July 13, according to an earlier announcement by the City and County of Broomfield (CCOB).

At 3 pm on July 12, a resident wrote the following email to CCOB to ask about Extraction’s requirement to use Tier 4 engines to protect air quality in line with the Operator Agreement. Here is the text of the email:

“Well completions must not commence using Tier 2 Frac Pumps on Interchange B as this is a violation of the BMPs included in the City agreement with Extraction:

Air Quality BMP 20(A)(2) requires that if Tier 4 fracking pumps become commonly available, the Operator will begin using Tier 4 fracking pumps.
Per Section L of the CDP, the Operator will be using Cummins QSK 50L engines which are now commonly available per a Cummins technical expert.

Note: Cummins Tier 4 engines were designed to fit the same specifications as the Tier 2 engines to allow for retrofit on existing systems.

Per CDP Section (L) Facility Emissions for a 29 well site, the Frac Pump engines are the major contributor to the overall emissions during well completions with 191 tons/year NOx, 1.3 tons/year PM10, 226 tons/year CO, 209 tons/year VOC, and 0.21 tons/year benzene. Switching to Tier 4 engines will result in a 45% reduction in NOx and an 80% reduction in PM. As a reminder, an APEN would typically be required for annual emissions above 2 tons/year VOCs and 5 tons/year NOx for our region. These emissions are significant, which is why the EPA has required manufacturers to reduce emissions through Tier 4 standards for non-road engines.

Per the Broomfield Charter, it is a requirement that the City protect the health and safety of the residents. Certainly, the use of Tier 2 engines which were an EPA requirement in 2006 should not be utilized. Tier 4 technology is readily available. At this point in time, all Cummins needs in the frac pump engine serial numbers to provide the process of switching out the Tier 2 engines for Tier 4 engines.”

Please read the rest of the details, including an issue with the incomplete freshwater piping system, here:…/completions-starting-on-i…/