77 



entire length of the log; each hole shall be drilled to twice the depth of 

 the sapwood, 



• A total of fifteen increment cores (to the center of the log)— three at five 

 locations, 120° apart, equidistant aiong the entire length of the log, 



• A surface wash— from one 6 in x 6 in (15.2 cm x 15.2 cm) area 

 randomly selected aiong the length of the log. 



d. After each sampling, the sampling holes for drill and increment cores shall be 

 plugged with tight-fitting dowels. 



e. AU samples shall be processed in an APHlS-approved laboratory facility to 

 determine the efficacy of each treatment. 



5:-132 162 



B8 



