One of the final executives charged in the chemical spill that contaminated the drinking water supply in Charleston, W.Va., and several surrounding counties has pleaded guilty, the Associated Press reported yesterday. During a hearing in federal court in Charleston yesterday, former Freedom Industries executive Dennis Farrell pleaded guilty in front of Judge Thomas Johnston. The plea deal calls for a sentence of 30 days to two years in prison, as well as a fine up to $200,000. He's set to be sentenced on Dec. 14. The bankrupt company and four ex-officials have already pleaded guilty to pollution charges.