The benzene hold on an oil tanker transiting a lock in the Panama Canal is ruptured by a spar that breaks loose from an on-board derrick. As a result of the spill, a 1-cm thick benzene film forms over the entire water surface of the lock. The volume of affected biota {i. e., aquatic organisms) is estimated as 0.2 m3. The biota-water partition coefficient is 15 cm3 /g and the density of the biota is approximately 1.1 g/ cm3. Determine the anticipated effect of this accident on: a) the concentration of benzene in the air in the immediate vicinity o~ the lock; and, b) the mass of benzene in the biota. State all assumptions.