EMCON

Q: Apr 2 1999

FY: Dec 31 1998

FY: Jan 1 1999

Q: Sep 30 1998

Q: Sep 30 1998

Q: Jun 30 1998

Q: Jun 30 1998

Q: Mar 31 1998

FY: Dec 31 1997

Q: Mar 31 1998

FY: Dec 31 1997

Q: Nov 12 1997

Q: Jun 30 1997

Q: Mar 31 1997

Q: Mar 31 1997

Q: Mar 31 1997

FY: Mar 31 1997

Q: Sep 30 1996

Q: Aug 13 1996

Q: May 9 1996

Current report pursuant to Section 13 or 15(d) (amendment)

Current report pursuant to Section 13 or 15(d) (amendment)

2,7

1

Prospectus Supplement for Primary Offering

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933 (amendment)

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

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

Definitive Proxy Statement

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

PRICE T ROWE ASSOCIATES INC /MD/

EMCON

IT GROUP INC

EMCON

IT GROUP INC

DIMENSIONAL FUND ADVISORS INC

GRACE & WHITE INC /NY

PRICE T ROWE ASSOCIATES INC /MD/

GRACE & WHITE INC /NY

DIMENSIONAL FUND ADVISORS INC

PRICE T ROWE ASSOCIATES INC /MD/

RYBACK MANAGEMENT CORP /MO /ADV

DIMENSIONAL FUND ADVISORS INC

PRICE T ROWE ASSOCIATES INC /MD/

FRANKLIN RESOURCES INC

RYBACK MANAGEMENT CORP /MO /ADV

PRICE T ROWE ASSOCIATES INC /MD/