Defense Special Weapons Agency, 6801 Telegraph Road, Alexandria, VA 22310-3398

A -- EXERCISE OF OPTION POC Sandy Bednoski, Negotiator, (703) 325-6762, Edward Archer, Contracting Officer, (703) 325-5028 CNT DSWA01-97-C-0021-P00003 AMT $136,535 DTD 093097 TO Environmental Chemical Corporation, 1240 Bayshore Highway, Suite 300, Burlingame, CA 94010 (0275)

Loren Data Corp. http://www.ld.com (SYN# 0227 19971006\A-0012.AWD)