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28 minutes depending on the wind direction. The cloud takes 4
minutes to pass over a single point on the ground.

           8) This determination assumes the tank holds the
minimum amount of ammonia currently reported for any of the tanks
at this location. If the ammonia holdings are higher (a likely
situation given that the maximum current holdings are 8000 MT), a
slightly larger (1.5 to 2 times in size)   lethal cloud results.
The amount of time for this cloud to travel to various sites
remains the same as this quantity depends primarily on windspeed.

           9)  If the release occurs at night, the lethal cloud
would reach the camp area in 25 minutes and the port area in 100
minutes if the wind direction were different. The size of the
cloud would be 2 km and would take 17 minutes to pass over a
point on the ground. The cloud travels at a lower speed due to
reduced windspeeds at night and is larger because the lower
windspeed results in less dispersion of the gas.

           10)   If the tank is ruptured and a pool of ammonia
forms, the lethal plume would extend 1.5 km downwind if the
incident occurred during the day and 4.3 km downwind if it
occurred at night. Because the camp area is located only 3 km
from the plant,   it is likely to be threatened if the nighttime
scenario occurred. Again, this scenario is worse because the
windspeed is lower which causes the gas to disperse less. The
threat would persist until all of the ammonia evaporated.

           11)   If an instantaneous release of ammonia occurred
from the tanks at the industrial port, a lethal cloud of gas,
approximately 3 km in diameter, would form. Depending of wind
direction, the cloud would reach the commercial port in 20
minutes if the accident occurred during the day and in 65 minutes
if it occurred at night. The cloud would take 25 minutes to pass
over a fixed point at night and 7 minutes to pass over a point at
night. These results assume the release of 5000 MT of gas, an
amount much lower than that stored in the tanks just prior to
shipping for export. Potentially, 20000 MT of ammonia might be
stored in the tank. If this amount of ammonia is released, the
 lethal cloud will be larger in diameter. However,  it will reach
the commercial port area in the same amount of time as the
 smaller cloud because its speed depends primarily on the speed of
the wind.

           12) The lethal cloud will reach the camp area in 34
minutes if the instantaneous release occurs during the day from
 the port and the wind direction is appropriate. The cloud will
 reach the camp area in two hours if the release occurs at night.

           13) Rupturing of the tank and formation of a pool of
 ammonia is also possible at the industrial port. If the incident
 occurs during the day a lethal plume extending 1.7 km downwind
 will result.    If the incident occurs at night, the plume will be
 4.3 km in length. The smaller footprint of the plume during the

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