Postal Service facilities that store certain quantities of hazardous chemicals must complete and submit the Emergency Planning and Community Right-to-Know Act (EPCRA) Tier II form by March 1 each year.
Reporting requirements apply to any location that stores threshold quantities of EPCRA-regulated chemicals, such as sulfuric acid in lead-acid and gel cell batteries, gasoline, diesel fuel, heating oil, propane and ice melt/anti-skid products.
In most cases, the federal reporting threshold is 10,000 pounds.
USPS facilities that exceed this threshold must complete and submit an EPCRA Tier II form to notify state and local emergency response agencies about the potential hazards on site.
The Environmental Affairs Tier II Reporting Environmental Compliance Bulletin has more information.