Environmental Management

Environmental Compliance Reminder: De-icing Materials Storage

United States Postal Service® (USPS®) sites that store large quantities of de-icing/anti-skid products in areas prone to snow and sleet may be subject to regulation by federal law. State and local environmental laws may also impose mandatory chemical reporting, restrictions on quantities stored, or permitting and requirements for on-site storage areas.

De-icing/anti-skid products include:

n Sodium chloride (“rock salt”).

n Calcium chloride.

n Magnesium chloride.

n Calcium magnesium acetate.

n Sand.

De-icing and Anti-Skid Product Management

Proper storage of de-icing/anti-skid products ensures usability of product, eliminates potential loss of product, and reduces the possibility of environmental contamination with salt or chemical run-off.

Regardless of location, sites that order or store de-icing/anti-skid products must:

n Store de-icing/anti-skid products on non-porous concrete or asphalt. If possible, frame the storage area on three sides to form a bin. Do not store bulk quantities directly on soil or near wells, reservoirs, or groundwater supplies.

n Cover de-icing/anti-skid product piles stored on-site (i.e., store materials under a shelter like an awning, shed, or tarp).

n Never purchase or store over 10,000 pounds at one site, unless necessary. Sites that store 10,000 pounds or more of de-icing/anti-skid products (including sand) are subject to USPS Tier II reporting (see blue.usps.gov/sustainability/environmental/tier-ii-reporting.htm).

Additional requirements may apply to your site, depending on your location. For more information, use the following guidance:

n Review the De-icing and Anti-Skid Product Storage Environmental Compliance Bulletin at blue.usps.gov/sustainability/environmental/_pdf/ecb-deicing-product-storage.pdf.

n Visit the Environmental Affairs website at blue.usps.gov/sustainability.

n Consult your designated environmental contact at blue.usps.gov/sustainability/contact.htm.