Original sentence: In July 2004, the USEPA filed a suit against DuPont alleging "widespread contamination" of PFOA near the Parkersburg, WV plant "at levels exceeding the company’s community exposure guidelines;" the suit also alleged that "DuPont had - over a 20 year period - repeatedly failed to submit information on adverse effects (in particular, information on liver enzyme alterations and birth defects in offspring of female Parkersburg workers).In October 2005, a USFDA study was published revealing PFOA and PFOA precursor chemicals in food contact and PTFE/Teflon products
Edited sentence: In July 2004, the USEPA filed a suit against DuPont alleging "widespread contamination" of PFOA near the Parkersburg, WV plant "at levels exceeding the company’s community exposure guidelines;" the suit also alleged that "DuPont had—over a 20 year period—repeatedly failed to submit information on adverse effects (in particular, information on liver enzyme alterations and birth defects in offspring of female Parkersburg workers).In October 2005, a USFDA study was published revealing PFOA and PFOA precursor chemicals in food contact and PTFE products