o >100ppm • >200ppm « >300ppin -k >400ppm SCALE (m) 



I " I ■ ■ I « 



L2 2.4 



•••• A 



21 1« 17 15 13 11 9 7 S 3 1 



Fig. 1 Spatial distribution of lead in ug/g (= 0.9 lbs/acre) at a site in 

 the former orchard at the University of Massachusetts--Amherst cam- 

 pus. Shaded areas indicate concentrations in excess of 400 uq/q 

 (360 lbs/acre). ^ 



