Impax Asset Management

Impax Asset Management as of Dec. 31, 2012

Portfolio Holdings for Impax Asset Management

Impax Asset Management holds 0 positions in its portfolio as reported in the December 2012 quarterly 13F filing

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ISSUER                           CLASS   CUSIP        	 VALUE    SH/PRN	PUT/  INV         OTHER        VOTING AUTH
                                                        '000s          		CALL  DISCRETION   MGRS    SOLE
Aegion Corp			Common	457667103	 3484	 157000			S		     S
Agilent Technologies		Common	00846U101	 9782	 238523			S		     S
Air Products			Common	009158106	 1343	  15900			S		     S
American Water Works 		Common	030420103	 8955	 241181			S		     S
Aqua America Inc		Common	03826W103	 3800	 149500 		S		     S
Badger Meter			Common	056525108	14275	 301087			S		     S
Borgwarner Inc			Common	099724106	20632	 288078			S		     S
Calgon Carbon Corp		Common	129603106	 2888    203700			S		     S
Clarcor Inc			Common	179895107	31998	 669697			S		     S
Clean Harbors Inc		Common	184496107	30653	 557234			S		     S
Cree Inc			Common	225447101	 7673	 225810			S		     S
Danaher Corp			Common	235851102	 9729	 174039			S		     S
Donladson Co Inc		Common	257651109	14303	 435540			S		     S
Ecolab Inc			Common	278865100	23258	 323473			S		     S
Emerson Electric Co.		Common	291011104	 5109	  96460			S		     S
Franklin Electric Co Inc	Common	353514102	17942	 289245			S		     S
Hubbell Inc			Common	443510201	 2655	  31377			S		     S
ICF International Inc		Common	44925C103	13915	 593646			S		     S
Idex Corp			Common	45167R104	 8175	 175685 		S		     S
Itron Inc			Common	465741106	34936	 784199			S		     S
Johnson Controls inc		Common	478366107	 3596	 117259			s		     S
LKQ Corp			Common	501889208	30779	1458698			S		     S
Mastec Inc			Common	576323109	 1958	  78546			S		     S
Metalico Inc			Common	591176102	 3241	1653326			S		     S
Ormat Technologies Inc		Common	686688102	14381	 745912			S		     S
Pall Corp			Common	696429307	38194	 633825			S		     S
Pentair Inc.			Common	709631105	28706	 584040			s		     S
Perkinelmer Inc.		Common	714046109	 4534	 142860			S		     S
Power Integrations Inc		Common	739276103	23762	 706998			S		     S
Regal Beloit			Common	758750103	37017	 524215			S		     S
Republic services Inc		Common	760759100	 5139	 174248			S		     S
Rexnord Corp			Common	76169B102	 4482	 210405			S		     S
Roper Industries Inc		Common	776696106	 3544     28975			S		     S
Schnitzer Steel Ind Inc		Common	806882106	 9667    318730			S		     S
Sims Group			Common	829160100	12198	1237089			S		     S
Stericycle Inc			Common	858912108	19077	 204518			S		     S
Tetra Tech Inc			Common	88162G103	21689	 819365			S		     S
Thermo Fisher Scientific Inc	Common	883556102	 7423	 116162			S		     S
Toro Co				Common	891092108	 1324	  30800			S		     S
Watts Water Technologies-A	Common	942749102	40311	 937682			S		     S
Xylem Inc			Common	98419M100	30263	1116731			S		     S