Final answer:
The letter "W" in Column 1 of the HMT means the entry regulates the offering for transport or transportation of the material unless the material is a hazardous substance or a hazardous waste.
Step-by-step explanation:
The letter "W" in Column 1 of the HMT means that the entry regulates the offering for transport or transportation of the material unless the material is a hazardous substance or a hazardous waste.
This question is related to hazardous materials and hazardous waste regulations, which fall under the category of environmental policy and regulation. It is important to understand the regulations surrounding the transport and handling of hazardous materials to ensure the safety of the public and the environment.
In this case, the letter "W" indicates that the material is not a hazardous substance or a hazardous waste and therefore can be transported without specific regulatory requirements.