SEVENSON ENVIRONMENTAL SERVICES INC

Q: Jun 30 2001

Q: Mar 31 2001

FY: Dec 31 2000

Q: Sep 30 2000

Q: Jun 30 2000

Q: Jun 30 2000

Q: Mar 31 2000

FY: Dec 31 1999

Q: Jun 30 1999

Q: Sep 30 1999

Q: Jun 30 1999

Q: Mar 31 1999

FY: Dec 31 1998

Q: Sep 30 1998

Q: Jun 30 1998

Q: Jun 30 1998

Q: Mar 31 1998

FY: Dec 31 1997

Q: Sep 30 1997

Q: Jun 30 1997

5,7

Current report pursuant to Section 13 or 15(d)

5,7

Certification of termination of registration of a class of securities (Section 12(g))

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Post Effective Amendment to S-8

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Preliminary Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

ROYCE & ASSOCIATES INC /NY

ARTISAN PARTNERS LTD PARTNERSHIP

ROYCE & ASSOCIATES INC /NY

ARTISAN PARTNERS LTD PARTNERSHIP

ROYCE & ASSOCIATES INC /NY

ARTISAN PARTNERS LTD PARTNERSHIP

ROYCE & ASSOCIATES INC /ADV

ARTISAN PARTNERS LTD PARTNERSHIP

ROYCE & ASSOCIATES INC /ADV

MORGAN J P & CO INC

ROYCE & ASSOCIATES INC /ADV

MORGAN J P & CO INC

FMR CORP

QUEST ADVISORY CORP /ADV

FMR CORP

QUEST ADVISORY CORP /ADV

FMR CORP

QUEST ADVISORY CORP /ADV

FMR CORP