information for an area is eventually plotted as ground dose rates. To understand what information will
appear on the SITMAP, you must understand the procedures for
a. Plotting single-point dose rates.
b. Plotting radiological-survey information.
6-2. Plotting Single-Point Dose Rates.
a. Monitoring reports and ground and aerial survey reports from those parts of the survey
accomplished using point techniques are directly processed and plotted into ground dose rates at the
points at which the readings were taken. Only peak or later dose rate readings reported on monitoring
reports can be plotted to the SITMAP, while all readings from survey reports are plotted.
b. Determining dose rate contours and key dose rate locations requires large quantities of
information. Once the contours and key dose rates are determined, however, much of the dose rate
information is extraneous on the radiological SITMAP. For this reason, work sheet overlays are prepared
for the initial identification and surveillance of each contamination hazard and only the necessary
identification data are transferred to the radiological SITMAP.
6-3. Plotting Radiological-Survey Information.
a. Ground survey. Dose rate information from a ground survey is processed into normalized
ground dose rates, which correspond to selected distance intervals along a route between two or more
checkpoints. The route, checkpoints, and distance interval are determined before the survey. The plotting
procedures listed below can be done before receipt of the survey information.
(1) Mark and label the checkpoints on the work sheet overlay and trace out the preselected
(2) Divide the route between checkpoints into the preselected distance intervals, moving in the
same direction as the survey party.
(3) Enter the normalized dose rate beside the proper location as processed data become
b. Aerial survey. Dose rate information from an aerial survey that was flown using the route
technique will be processed into normalized ground dose rates, which existed at certain points along the
route, and will be plotted as shown in Figure 6-1.