In short, after sampling water from Wyoming 42 homes located in close proximity to drilling sites, the EPA went on to drill 2 monitoring/test wells. The monitoring well sample results include (preliminary report quoted from EPA website):
- Elevated ppH– rang g ging from 11.2-12
- Potassium (8-18x) and chloride (18x) significantly elevated
- Synthetic organic compounds including glycols, alcohols and 2-butoxyethanol
- Methane at near-saturation levels (up to 19 mg/L)- similar isotopic signature to production gas
- Other petroleum-related detections– BTEX (including benzene at 50x the MCL), phenols, trimethylbenzenes,, DR