Methane Emissions from Abandoned Coal Mines

Methane Emissions from Abandoned Coal Mines

IES was recently involved in a stray gas case in Kentucky where air with elevated methane and carbon dioxide concentrations migrated into residential homes. Methane concentrations exceeded the lower explosive limit (LEL) and represented a threat to nearby residents....
Research Summary: Organic Contaminants in Portland Cement

Research Summary: Organic Contaminants in Portland Cement

USEPA uses glycol is an indicator of hydraulic fracturing chemical migration. Recent research has shown that glycol is present in portland cement and that it leaches from the cement at concentrations in the thousands of parts per billion. Therefore glycol alone shouldn’t be used to demonstrate hydraulic fracturing contamination in aquifers.