which may reasonably be expected to exist in or near the incident area,
The information gained will be of especial value to firefighting, reseue
and other civil defense groups operating within this vital area,
The somcalied “rear areas" include territory extending back from
six to eight miles on all sides of the incident area,
dere the radiological
surveys would be made on the standard parallel-line-basis.
They may be
expected to crovide facts essential for safety in the directed movements of
the civil population,
On the basis of information furnished by the Area
Survey Units, the police service then would post, and where necessary patrol,
the boundaries of all radiologically hazardous areas in order to prohibit entry
therein by unauthorized persons,
The “immediate down-wind area" extends up to 50 miles from the center
of the incident area in the general direction of the winds prevailing at
the time of and immediately following the incident,
Area survey operations
conaucted in these areas would take the form of "spot checks" aimed at
detection of any radiological hazards attributable to cloud "fall ont",
Down
wind surveys at greater distances would be made by Area Survey Units from
other local organizations in accordance with directions from the appropriate
State Civil Defense Director, acting with the advice of his Radiological Defense
Advisor,
The go-called “down-water" operations are surface surveys of streems and
Tivers aimed at detection of radiological hazards which may be considered
Capable of later »roducing hazards at »oints downstream from the incident area,
Individuals engaged in area survey operations would record all significant
radiation data on standardized grid sheets,
Zssential dizests of these data,
especially information concerning the nature and location of radiological
hazards would be periodically transmitted to the Radiological Situation
TO8 ARCHTV se