 The Pontchartrain Works facility owned by Denka in Reserve, Louisiana has been reported to be emitting chloroprene which is defined as "likely to be carcinogenic to humans" by the EPA.Up to 755 times the safe air value of 0.2 μg/m³ of chloroprene has been recorded at the fifth ward elementary school in close proximity to the plant.The cancer risk in Reserve is 1,500 times the national average and is thought to be due to chloroprene levels.