Practical Conversion Factors
Some helpful conversion factors are provided below:
Drums and barrels used as asbestos-waste containers are typically of 35 gallons capacity. Gallons can be converted to cubic yards by multiplying gallons by 0.00379. Plastic bags have a nominal volume of 0.1 cubic yards, but when they contain asbestos waste their volume is assumed to be about 0.075 cubic yards.
Cubic yards can be changed to cubic meters by multiplying cubic yards by 0.765.
When you turn the waste over to the transporter, require the transporter to acknowledge receipt of the asbestos waste by signing the WSR at Item 10: retain a copy of the WSR signed by the transporter for your files.
Courtesy of The EPA

What to know about opening a new trench for asbestos disposal