Shielding requirements for K Basin waste transfer line

K-East Basin sludge, mixed with water, is to be transported to the tank farms using a high integrity container mounted on a trailer. Load considerations preclude driving the truck directly to the tank opening. Thus, it is envisioned that a transfer line will run from a tanker unloading point to a point where the waste can be injected into a waste tank. It is presently envisioned that the waste will be pumped from the truck to the tank in a three inch pipe which is encased inside a six inch pipe. The transfer line will be shielded by either berming earth with a density of approximately 2.00 g/cm{sup 3} (125 lb/ft{sup 3}) around the line, or constructing a concrete raceway