U.S. Army Corps of Engineers, Philadelphia Wanamaker Building, Room 643, 100 Penn Square East, Philadelphia, Pennsylvania 19107

C -- INDEFINITE DELIVERY CONTRACT FOR GEOTECHNICAL, GEOENVIRONMENTAL AND HAZARDOUS/TOXIC REMEDIAL WASTE (HTRW) SERVICES POC Contact Sandi Fletcher, Contract Specialist, 215-656-6915 CNT DACW61-98-D-0008 AMT NTE: $3,000,000.00 (includes Base + an option for two (2) additional years @ $1,000,000.00 each) DTD 052698 TO Duffield Associates, Incorporated, 5400 Limestone Road, Wilmington, DE 19808 (0156)

Loren Data Corp. http://www.ld.com (SYN# 0320 19980609\C-0001.AWD)