| | — | S COHEN & ASSOCIATES, INC | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | AH21NATURAL RESOURCES AND ENVIRONMENT R&D SERVICES; CONSERVATION AND LAND MANAGEMENT; BASIC RESEARCH | May 15, 1997 | May 15, 1997 | Sep 15, 1997 |
| | — | S COHEN & ASSOCIATES, INC | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | AH21NATURAL RESOURCES AND ENVIRONMENT R&D SERVICES; CONSERVATION AND LAND MANAGEMENT; BASIC RESEARCH | Apr 15, 1997 | Apr 15, 1997 | Sep 15, 1997 |
| | — | S COHEN & ASSOCIATES, INC | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | AH21NATURAL RESOURCES AND ENVIRONMENT R&D SERVICES; CONSERVATION AND LAND MANAGEMENT; BASIC RESEARCH | Jan 15, 1997 | Jan 15, 1997 | Sep 15, 1997 |
| | — | S COHEN & ASSOCIATES, INC | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | AH21NATURAL RESOURCES AND ENVIRONMENT R&D SERVICES; CONSERVATION AND LAND MANAGEMENT; BASIC RESEARCH | Sep 15, 1996 | Sep 15, 1996 | Sep 15, 1997 |
| | — | S COHEN & ASSOCIATES, INC | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | F999OTHER ENVIRONMENTAL SERVICES | Sep 15, 1996 | Sep 15, 1996 | Sep 15, 1997 |
| | — | S COHEN & ASSOCIATES, INC | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | F999OTHER ENVIRONMENTAL SERVICES | Sep 15, 1996 | Sep 15, 1996 | Sep 15, 1997 |
| | — | S COHEN & ASSOCIATES, INC | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | AH21NATURAL RESOURCES AND ENVIRONMENT R&D SERVICES; CONSERVATION AND LAND MANAGEMENT; BASIC RESEARCH | Aug 15, 1996 | Aug 15, 1996 | Sep 15, 1997 |
| | — | S COHEN & ASSOCIATES, INC | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | F999OTHER ENVIRONMENTAL SERVICES | Aug 15, 1996 | Aug 15, 1996 | Sep 15, 1997 |
| | — | S COHEN & ASSOCIATES, INC | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | AH21NATURAL RESOURCES AND ENVIRONMENT R&D SERVICES; CONSERVATION AND LAND MANAGEMENT; BASIC RESEARCH | Aug 15, 1996 | Aug 15, 1996 | Sep 15, 1997 |
| | — | S COHEN & ASSOCIATES, INC | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | F999OTHER ENVIRONMENTAL SERVICES | Aug 15, 1996 | Aug 15, 1996 | Sep 15, 1997 |
| | — | S COHEN & ASSOCIATES, INC | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | AH21NATURAL RESOURCES AND ENVIRONMENT R&D SERVICES; CONSERVATION AND LAND MANAGEMENT; BASIC RESEARCH | Aug 15, 1996 | Aug 15, 1996 | Sep 15, 1997 |
| | — | S COHEN & ASSOCIATES, INC | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | F999OTHER ENVIRONMENTAL SERVICES | Aug 15, 1996 | Aug 15, 1996 | Sep 15, 1997 |
| | — | S COHEN & ASSOCIATES, INC | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | AH21NATURAL RESOURCES AND ENVIRONMENT R&D SERVICES; CONSERVATION AND LAND MANAGEMENT; BASIC RESEARCH | Aug 15, 1996 | Aug 15, 1996 | Sep 15, 1997 |
| | — | S COHEN & ASSOCIATES, INC | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | F999OTHER ENVIRONMENTAL SERVICES | Aug 15, 1996 | Aug 15, 1996 | Sep 15, 1997 |
| | — | S COHEN & ASSOCIATES, INC | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | AH21NATURAL RESOURCES AND ENVIRONMENT R&D SERVICES; CONSERVATION AND LAND MANAGEMENT; BASIC RESEARCH | Aug 15, 1996 | Aug 15, 1996 | Sep 15, 1997 |
| | — | S COHEN & ASSOCIATES, INC | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | F999OTHER ENVIRONMENTAL SERVICES | Aug 15, 1996 | Aug 15, 1996 | Sep 15, 1997 |
| | — | S COHEN & ASSOCIATES, INC | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | F999OTHER ENVIRONMENTAL SERVICES | Jul 15, 1996 | Jul 15, 1996 | Sep 15, 1997 |
| | — | S COHEN & ASSOCIATES, INC | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | F999OTHER ENVIRONMENTAL SERVICES | Jul 15, 1996 | Jul 15, 1996 | Sep 15, 1997 |
| | — | S COHEN & ASSOCIATES, INC | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | AH21NATURAL RESOURCES AND ENVIRONMENT R&D SERVICES; CONSERVATION AND LAND MANAGEMENT; BASIC RESEARCH | Jul 15, 1996 | Jul 15, 1996 | Sep 15, 1997 |
| | — | S COHEN & ASSOCIATES, INC | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | AH21NATURAL RESOURCES AND ENVIRONMENT R&D SERVICES; CONSERVATION AND LAND MANAGEMENT; BASIC RESEARCH | Jul 15, 1996 | Jul 15, 1996 | Sep 15, 1997 |
| | — | S COHEN & ASSOCIATES, INC | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | AH21NATURAL RESOURCES AND ENVIRONMENT R&D SERVICES; CONSERVATION AND LAND MANAGEMENT; BASIC RESEARCH | Jul 15, 1996 | Jul 15, 1996 | Sep 15, 1997 |
| | — | S COHEN & ASSOCIATES, INC | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | F999OTHER ENVIRONMENTAL SERVICES | May 15, 1996 | May 15, 1996 | Jul 15, 1997 |
| | — | S COHEN & ASSOCIATES, INC | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | F999OTHER ENVIRONMENTAL SERVICES | May 15, 1996 | May 15, 1996 | Jul 15, 1997 |
| | — | S COHEN & ASSOCIATES, INC | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | AH21NATURAL RESOURCES AND ENVIRONMENT R&D SERVICES; CONSERVATION AND LAND MANAGEMENT; BASIC RESEARCH | May 15, 1996 | May 15, 1996 | Jul 15, 1997 |
| | — | S COHEN & ASSOCIATES, INC | $0 | ENVIRONMENTAL PROTECTION AGENCY | — | — | — | AH21NATURAL RESOURCES AND ENVIRONMENT R&D SERVICES; CONSERVATION AND LAND MANAGEMENT; BASIC RESEARCH | May 15, 1996 | May 15, 1996 | Jul 15, 1997 |