Northwest Building Projects manufactures two lumber products from a joint milling process: residential building lumber and commerical building lumber. A standard production run incurs joint costs of $350,000 and results in 120,000 units of residential building lumber and 120,000 units of commercial building lumber. Each residential building lumber sells for $12 per unit and each commerical building lumber sells for $8 per unit.

1) Assume that the CBL is not marketable at split-off but must be planed and sized at a cost of $220,000 per production run. During this process, 10,000 units are unavoidably lost and have no value. The remaining units of CBL are salable at $10 per unit. The RBL, although salable immediately at the split-off point, is coated with a tarlike preservative that costs $250,000 per production run. The RBL is then sold for $13 each. Using the net realizable value basis, how much of the completion costs should be assigned to each unit of CBL?