Administrative Procurement Branch, Environmental Protection Agency, Fairchild Building -- 7th Floor, 499 S. Capital Street, S.W., Washington, DC 20024

B -- COLLABORATIVE VALIDATION OF SEVEN 1600-SERIES TRACE METALS METHODS SOL 97-1 DUE 052397 POC Sherry F. Lutz, Contracting Officer, (202) 260-1980 The purpose of this modification to SOL 97-1 is to extend the due date from May 9, 1997 to May 23, 1997. Any questions regarding SOL 97-1 should be in writing and faxed to 202/260-6866, ATTN: Sherry F. Lutz. (0121)

Loren Data Corp. http://www.ld.com (SYN# 0007 19970505\B-0002.SOL)