WESTWORTH VILLAGE -- On 20 acres all but hidden between the flows of both Texas 183 and Farmers Branch Creek, Deborah Rogers runs a farm, complete with dozens of goats, a few chickens, dogs, even peacocks, all of whom live peaceably in the shade of giant oak stands. It has been an idyllic existence for her. Until this year. The change came in the form of two laboratory reports she commissioned this spring and summer showing toxic and irritant pollutants on her property. Carbon disulfide. Dimethyl disulfide. Methyl ethyl disulfide. Methyl propyl disulfide. In a lengthy lab report that also...