LENGTH & WIDTH OF AREA COVERED IN MILES
miles X miles     =    (a)
PERCENTAGE OF COVERAGE WITHIN AREA ABOVE
 
(b)
%        
ESTIMATED AREA COVERED IN SQUARE MILES
(a)
X
(b)
% coverage     =
(c)
 
APPEARANCE ON THE WATER
Appearance %     ( c )   Gal.
Barely Visible x  
Silvery     x  
Slightly Colored x  
Brightly Colored x  
Dull     x  
Dark     x  
ESTIMATED TOTAL IN GALLONS
ESTIMATED TOTAL IN BARRELS