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.
Since there is a possibility of odor loss or problems with your sense of smell, you should respond immediately to even a faint odor of gas. Propane gas detectors Under some circumstances, you may not smell a propane leak. Propane gas detectors sound an alarm if they sense propane in the air.