SECTION 312 TIER II REPORTING
Any facility that stores extremely hazardous substances or hazardous chemicals at their facility in excess of the threshold planning quantity may be subject to the reporting requirements under the federal and state Emergency Planning and Community Right to Know Act. EHS chemical are those listed in 40 CFR part 355. A complete listing of EHS Chemicals can be found in the Title III Consolidated List of Lists. Hazardous chemicals are defined as chemicals that are not extremely hazardous and which a facility is required to have and maintain a safety data sheet for that chemical under the Occupational Safety and Health Administration (OSHA).
THRESHOLD PLANNING QUANTITIES
Exceeding the threshold planning quantity is determined by measuring the maximum quantity of a chemical on a facility site at any one time. If the TPQ is exceeded then the chemical must be reported.For extremely hazardous substances, the TPQ is chemical specific and is listed in the Title III Consolidated List of Lists referenced above. For hazardous chemicals, the TPQ is set at 10,000 pounds.