Federal Court Finds Liability For Excess Conductivity

The U.S. District Court for the Southern District of West Virginia, Ohio Valley Envt'l v Elk Run Coal Co  Case No. 12-cv-0785, found liability for discharge to surface waters of ionic pollutants (measured by conductivity) that adversely affect stream macroinvertebrate communities.  The rationale expressed in this decision may have ramifications for the regulated community regarding which types of alleged permit violations may be subject to action by citizens suits and to what extent the courts may act as "super regulators" to impose obligations different from those imposed by the state agencies authorized to oversee the regulated activities.  Although the case orignates in Appalachian coal mining, the court's evaluation of expert testimony relevant to  general and specific causation of harm, as determined by levels of conductivity and biotic index scores, may affect interpretations of alleged harm caused by pollutants in stormwater and other surface discharges.