Ithaca (WENY) - An environmental watchdog firm out of Ithaca claims DEC documents prove the department knew about hundreds of gas, oil and brine spills in New York causing harm to neighbors. Walter Hang of Toxics Targeting wants the DEC to scrap its most recent environmental study, claiming the evidence shows, the state can't effectively regulate. Hang's firm got the documents through the freedom of information act. The information shows over 200 natural gas and oil problems in towns across New York including five here in the Southern Tier. Hang is asking Governor Cumo to retract the environmental impact study, in which the DEC claims drilling can be done safely.