CLEAN HARBORS INC

Ticker: CLH CUSIP: 184496107 Class: EQTY

PALISADE CAPITAL MANAGEMENT, LP's Holding History (CIK: 0001009006)

Note: Option positions (PUT/CALL) are excluded.

Q4 2013

Shares 403,090 Value ($000) $24,169 Avg Close $57.66 Range $51.77 - $64.12

Q3 2013

Shares 406,469 Value ($000) $23,843 Avg Close $55.80 Range $50.23 - $59.80

Q2 2013

Shares 438,522 Value ($000) $22,159 Avg Close $55.73 Range $50.37 - $61.28

Q1 2013

Shares 367,557 Value ($000) $21,351 Avg Close $54.78 Range $48.22 - $60.00

Q4 2012

Shares 276,383 Value ($000) $15,204 Avg Close — Range —

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2013	403,090	$24,169	$57.66	$51.77 - $64.12
Q3 2013	406,469	$23,843	$55.80	$50.23 - $59.80
Q2 2013	438,522	$22,159	$55.73	$50.37 - $61.28
Q1 2013	367,557	$21,351	$54.78	$48.22 - $60.00
Q4 2012	276,383	$15,204	—	—