Abstract: A device for securing a hazardous material container on a containment assembly includes four corner brackets and four adjustable straps. Each of the corner brackets are removably mounted to a corner of the containment assembly. Each bracket has a hole formed therein. The first adjustable strap is attached to one corner of the material container and extends down through the hole in the first bracket and up to the opposite corner of the container. The second strap is likewise attached to a second corner of the container, extends down through a hole in the second corner bracket and is secured to an opposite corner. The third and fourth straps are similarly attached. The tension on the straps is adjustable to hold the container securely on the containment assembly.