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| | — | MANTECH ENVIR. TECHNOLOGY IN | $0 | FOREST SERVICE | — | — | — | B599SPECIAL STUDIES/ANALYSIS- OTHER | May 15, 1998 | May 15, 1998 | May 15, 1999 |
| | — | MANTECH ENVIR. TECHNOLOGY IN | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | H266EQUIPMENT AND MATERIALS TESTING- INSTRUMENTS AND LABORATORY EQUIPMENT | Sep 15, 1997 | Sep 15, 1997 | Jan 15, 2001 |
| | — | MANTECH ENVIR. TECHNOLOGY IN | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | R425SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL | Sep 15, 1997 | Sep 15, 1997 | Jun 15, 1998 |
| | — | MANTECH ENVIR. TECHNOLOGY IN | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | R425SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL | Sep 15, 1997 | Sep 15, 1997 | Jun 15, 1998 |
| | — | MANTECH ENVIR. TECHNOLOGY IN | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | R425SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL | Aug 15, 1997 | Aug 15, 1997 | Aug 15, 1999 |
| | — | MANTECH ENVIR. TECHNOLOGY IN | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | H266EQUIPMENT AND MATERIALS TESTING- INSTRUMENTS AND LABORATORY EQUIPMENT | Aug 15, 1997 | Aug 15, 1997 | Jan 15, 2001 |
| | — | MANTECH ENVIR. TECHNOLOGY IN | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | AH21NATURAL RESOURCES AND ENVIRONMENT R&D SERVICES; CONSERVATION AND LAND MANAGEMENT; BASIC RESEARCH | Aug 15, 1997 | Aug 15, 1997 | Jun 15, 2000 |
| | — | MANTECH ENVIR. TECHNOLOGY IN | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | R425SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL | Jul 15, 1997 | Jul 15, 1997 | Aug 15, 1999 |
| | — | MANTECH ENVIR. TECHNOLOGY IN | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | R425SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL | Jul 15, 1997 | Jul 15, 1997 | Jun 15, 1998 |
| | — | MANTECH ENVIR. TECHNOLOGY IN | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | H266EQUIPMENT AND MATERIALS TESTING- INSTRUMENTS AND LABORATORY EQUIPMENT | Jul 15, 1997 | Jul 15, 1997 | Jan 15, 2001 |
| | — | MANTECH ENVIR. TECHNOLOGY IN | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | H266EQUIPMENT AND MATERIALS TESTING- INSTRUMENTS AND LABORATORY EQUIPMENT | Jul 15, 1997 | Jul 15, 1997 | Jan 15, 2001 |
| | — | MANTECH ENVIR. TECHNOLOGY IN | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | R425SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL | Jul 15, 1997 | Jul 15, 1997 | Jun 15, 1998 |
| | — | MANTECH ENVIR. TECHNOLOGY IN | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | AH21NATURAL RESOURCES AND ENVIRONMENT R&D SERVICES; CONSERVATION AND LAND MANAGEMENT; BASIC RESEARCH | Jul 15, 1997 | Jul 15, 1997 | Jun 15, 2000 |
| | — | MANTECH ENVIR. TECHNOLOGY IN | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | AH21NATURAL RESOURCES AND ENVIRONMENT R&D SERVICES; CONSERVATION AND LAND MANAGEMENT; BASIC RESEARCH | Jun 15, 1997 | Jun 15, 1997 | Jun 15, 2000 |
| | — | MANTECH ENVIR. TECHNOLOGY IN | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | AH21NATURAL RESOURCES AND ENVIRONMENT R&D SERVICES; CONSERVATION AND LAND MANAGEMENT; BASIC RESEARCH | Apr 15, 1997 | Apr 15, 1997 | Jun 15, 2000 |
| | — | MANTECH ENVIR. TECHNOLOGY IN | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | AH51NATURAL RESOURCES AND ENVIRONMENT R&D SERVICES; OTHER NATURAL RESOURCES; BASIC RESEARCH | Mar 15, 1997 | Mar 15, 1997 | Dec 15, 1996 |
| | — | MANTECH ENVIR. TECHNOLOGY IN | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | B544SPECIAL STUDIES/ANALYSIS- TECHNOLOGY | Mar 15, 1997 | Mar 15, 1997 | Jun 15, 1998 |
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| | — | MANTECH ENVIR. TECHNOLOGY IN | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | R425SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL | Jan 15, 1997 | Jan 15, 1997 | Aug 15, 1999 |
| | — | MANTECH ENVIR. TECHNOLOGY IN | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | B544SPECIAL STUDIES/ANALYSIS- TECHNOLOGY | Dec 15, 1996 | Dec 15, 1996 | Jun 15, 1998 |
| | — | MANTECH ENVIR. TECHNOLOGY IN | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | F999OTHER ENVIRONMENTAL SERVICES | Sep 15, 1996 | Sep 15, 1996 | Jan 15, 2001 |
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| | — | MANTECH ENVIR. TECHNOLOGY IN | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | R425SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL | Sep 15, 1996 | Sep 15, 1996 | Jun 15, 1998 |
| | — | MANTECH ENVIR. TECHNOLOGY IN | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | R425SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL | Sep 15, 1996 | Sep 15, 1996 | Jun 15, 1998 |