How to select a Service Provider
The best Service Provider for you isn't necessarily the least expensive one. Don't trade short-term cost savings for long-term liabilities. If more than one Service Provider handles your waste (for example, if one Service Provider transports it and another recycles it), make sure each one is reputable.
When you interview a Service Provider, ask some questions:
Chlorinated solvents? Most Service Providers charge more if hazardous liquids contain chlorinated solvents. Small amounts of these solvents can contaminate an entire drum or tank of other types of waste. To avoid contamination, know your chemicals. Look for the term "chloro-" in the list of ingredients on the container or on the material safety data sheet and avoid mixing those solvents with other wastes.
Water? Fluids containing large concentrations of water (usually more than 10 percent) cannot be burned for fuel recovery. The more water, the higher the cost for disposal.
Heavy metals? While the presence of metals may not affect disposal costs, additional lab testing may be required. Ask your Service Provider.