If the producer's crops are in the field, wind and rain may remove most of the contamination from the grains if the producer permit the crops to grow to maturity. If their crops are at maturity, milling and polishing may remove the contamination from the grain. When harvesting, the producer should store contaminated grains separately from uncontaminated grains. The ODA may take samples. The producer should protect open rain barrels, tanks and open wells by covering them with tarpaulins or plywood.
Radioactive substances are unlikely to contaminate covered or underground water sources.
Producers should disconnect filler pipes from roof runoffs to water storage containers. This may prevent contaminants from entering the water storage. They should do the same for other surface drains to water supplies. They should close water intake valves from any contaminated water source, to irrigation systems. This may prevent additional spread of contaminated water.