40 CFR § 261.7 – Residues of hazardous waste in empty containers

(i) All wastes have been removed that can be removed using the practices commonly employed to remove materials from that type of container, e.g., pouring, pumping, and aspirating. In essence the container must be drip dry.

(ii) No more than 2.5 centimeters (one inch) of residue remain on the bottom of the container or inner liner.

(iii) No more than 3 percent by weight of the total capacity of the container remains in the container or inner liner if the container is less than or equal to 119 gallons in size; or

The afore mentioned residuals apply only to viscous materials that may cling to sides of the containers during emptying process.

• containers should be drip dry

40 CFR § 173.29-C-Empty Packaging

• Except as otherwise provided in this section, an empty packaging containing only the residue of a hazardous material shall be offered for transportation and transported in the same manner as when it previously contained a greater quantity of that hazardous material.

All containers must be closed. Rings/covers installed and all bungs in place. All labels must be in place.

Containers formerly containing pesticides, herbicides, biological waste, radioactive material and or poisonous at inhalation products will not be accepted.