It is believed that the methodology shown can be easily transferred to 

 assist those in the Fish and Wildlife Service and other Government agencies 

 in planning their response activities. 



Task Example. Predict Where the Spilled Material Will Go on the Surface and 

 Map Actual Movement . 



How to accomplish this task: 



1. From information obtained concerning the solubility of the spilled 

 material, estimate the quantity of material likely to go into the 

 solution and the size of the subsurface slick. 



2. Using dyes, tag the water around the spill area. Use a flourometer 

 or spectrometer to track the movement of the dye and the spill. 

 Determine the stream velocity using an integrated float technique 

 for depth profile of velocity. 



3. Collect samples for determination of concentration of material in 

 the water column in the form of dissolved or dispersed material. 



4. Utilize current data to plot probable subsurface plume movement. 

 If current data are unavailable, use an over the side current 

 meter to obtain these currents. In a river or estuary, use 

 integrated stream velocities, or simple current and tide flows. 



5. Plot the projected movement of the plume onto maps of the area. 



6. By analyzing samples of the chemical group, determine or estimate 

 the rate of dispersal for point where concentration of material 

 becomes too dilute to detect. 



Tools Needed: maps, sample bottles, current meters, existing subsurface 

 current data, flourometer, spectrophotometer, dyes, vessel, and equip- 

 ment for deploying dyes, plotting equipment. 



Figure 1. Typical task item analysis. 



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