Chemical Disclosures – Erie Protectors

July 17, 2025July 17, 2025

ECMC Chemical Disclosures Include 28 Never-Before Disclosed Chemicals

Now that the ECMC Chemical Disclosures “database” has data for 158 locations, let’s look at the chemicals disclosed. We previously looked at the chemical disclosure for the Cosslett East location, and found 4 chemicals (by CAS Number) that Crestone Peak Resources had never before listed in their FracFocus disclosures.

As of July 17, 2025, the ECMC Chemical Disclosures data contain 4,735 chemical entries for 158 locations and 172 distinct chemical CAS Numbers. These are the 28 chemicals that have never before been disclosed to FracFocus for any Colorado frac job, according to their CAS Number, as well as their general purpose in oil & gas extraction.

July 5, 2025July 15, 2025

Chemical Disclosures Now Available for Cosslett East

An aerial image of the Cosslett East facility (separators and other infrastructure), operated by Crestone Peak Resources.

On June 27, 2025, Crestone Peak Resources finally submitted the required chemical disclosures for the hydraulic fracturing jobs at Cosslett East, 5 weeks after PSR/FracTracker’s expose on missing chemical disclosures was published on May 20, 2025. This report was submitted 679 days late; it was originally due on August 18, 2024, 150 days after the last well was spud on March 21, 2023. It’s yet another example where the industry is only held accountable by activist organizations where state regulatory agencies fail to do so.

May 21, 2025July 15, 2025

PSR Report: Colorado Oil & Gas Operators Fail to Report Fracking Chemicals

On Tuesday, May 20, 2025, Physicians for Social Responsibility (PSR), PSR Colorado, Colorado Sierra Club, and FracTracker Alliance released a report that highlighted low compliance with a 2022 Colorado law designed to prevent toxic exposure to the chemicals used in hydraulic fracturing.

View the full report at PSR Colorado ⇒

Of the 1,114 wells highlighted in the report, 14 of them are located in Erie at the Cosslett East #22H-H168 pad, where wells were drilled and hydraulically fractured in 2023.