MARK A. CHATIGNY 
15926 Via Toledo 
San Lorenzo, California 94580 
(415) 276-4307 
environmental effect is possible. Lack of knowledge of the 
effects activates my concern. 
Sincerely, 
Mark A. Chatigny ^ 
Assistant Director* 
Naval Bio Science Lab 
Univ. of California, Oakland, Ca. 
94625 
[A-290] 
