US Ecology, Inc.

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

1.01,1.02,2.01,3.01,3.03,5.01,5.02,5.03,9.01

Notification of removal from listing and/or registration on a national securities exchange

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

General form for quarterly reports under Section 13 or 15(d)

5.07

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

8.01

8.01,9.01

No description available

No description available

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Annual report pursuant to Section 13 or 15(d)

2.02,9.01

Additional Information for Proxy Statement/ Votes

Beneficial ownership report for a holder of more than 5% (Schedule 13D)

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G)

Additional Information for Proxy Statement/ Votes

1.01,7.01,9.01

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G)

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G)

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

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

5.02,8.01

7.01,9.01

General form for quarterly reports under Section 13 or 15(d)

2.02,9.01

7.01,9.01

General form for quarterly reports under Section 13 or 15(d)

2.02,9.01

1.01,7.01,9.01

5.02,5.03,5.07,8.01,9.01

7.01,9.01

General form for quarterly reports under Section 13 or 15(d)

2.02,9.01

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Preliminary Proxy Statement

7.01,9.01

Annual report pursuant to Section 13 or 15(d)

2.02,9.01

5.02,7.01,9.01

5.03,9.01

5.02

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Additional Information for Proxy Statement/ Votes

General form for quarterly reports under Section 13 or 15(d)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Annual report pursuant to Section 13 or 15(d)

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

Automatic Shelf Registration

General form for quarterly reports under Section 13 or 15(d)

Registration of Securities on Exchange

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

Certification of approval for listing and registration on a national securities exchange

Notice of Effectiveness

Prospectus Supplement for Primary Offering

Correspondence with the SEC

Registration statement under Securities Act of 1933 (amendment)

Letter from the SEC

Registration statement under Securities Act of 1933 (amendment)

Correspondence with the SEC

Letter from the SEC

Registration statement under Securities Act of 1933

Bell Simon G

WELLING STEVEN D

Marshall Andrew

Gerratt Eric L

Feeler Jeffrey R

Dorton Katina

STEINER MELANIE

SAHLBERG JOHN T.

CONLEY E RENAE

Keating Ronald C

Fox Daniel

EISENBERG GLENN A

Burke Richard L. Jr.

HOGANS MACK L