If the members of the four delimited categories are counted as separate chemicals, the TRI Program covers 690 chemicals and chemical categories (i.e., 595 + 27 + 68). Note: methyl mercaptan and 2,2-dibromo-3-nitrilopropionamide are under administrative stays and are not currently reportable.
1 Open all the doors and windows.  2 You want to make sure you ventilate the house, Altman said. 3  If you suddenly notice your grass or shrubs have changed color, looking more brown or rusty, that could be a sign of a leak: the gas pouring out of the pipes.
How to determine if you have a Gas Leak. Is there an odor? Do you hear air hissing or leaking? Are you aware of any damage to the gas line? Are you or another member of your family feeling dizzy, faint or ill? If you answered yes to any of these questions, please contact SÂ·CÂ·UÂ·D by calling (865) 453-3272.