0141594 



ASSESSMENT OF THE TOXICITY OF ARSENIC, 

 CADMIUM, LEAD AND ZINC IN SOIL, PLANTS, 

 AND LIVESTOCK IN THE HELENA VALLEY 

 OF MONTANA 



for 



EAST HELENA SITE (ASARCO) 

 EAST HELENA, MONTANA 



EPA Work Assignment No. 68-8L30.0 



MAY 1987 



