Impax Asset Management as of Dec. 31, 2011
Portfolio Holdings for Impax Asset Management
Impax Asset Management holds 0 positions in its portfolio as reported in the December 2011 quarterly 13F filing
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ISSUER CLASS CUSIP VALUE SH/PRN PUT/ INV OTHER VOTING AUTH
'000s CALL DISCRETION MGRS SOLE
Aecom Tech Common 00766T100 1277 62102 S S
Aegion Corp Common 457667103 543 35400 S S
Air Products Common 009158106 4453 52000 S S
American Water Works Common 030420103 6256 196350 S S
Aqua America Inc Common 03826W103 2412 109400 S S
Badger Meter Common 056525108 21412 727567 S S
Clarcor Inc Common 179895107 36875 737647 S S
Clean Harbors Inc Common 184496107 40302 632384 S S
Cooper Industries Common 216648402 3025 55628 S S
Danaher Corp Common 235851102 3675 78080 S S
Ecolab Inc Common 278865100 26303 453868 S S
Emerson Electric Co. Common 291011104 3470 74479 S S
ICF International Inc Common 44925C103 16476 664901 S S
Idex Corp Common 45167R104 2271 61200 S S
Itron Inc Common 465741106 28812 805476 S S
Johnson Controls inc Common 478366107 3674 117000 s S
LKQ Corp Common 501889208 46920 1559834 S S
Metalico Inc Common 591176102 7388 2245718 S S
Ormat Technologies Inc Common 686688102 22073 1224252 S S
Pall Corp Common 696429307 51237 896537 S S
Pentair Inc. Common 709631105 25717 772500 s S
Perkinelmer Inc. Common 714046109 5157 257842 S S
Power Integrations Inc Common 739276103 22844 688898 S S
Regal Beloit Common 758750103 40906 800261 S S
Republic services Inc Common 760759100 3167 114255 S S
Rogers Corp. Common 775133101 1076 29200 S S
Roper Industries Inc Common 776696106 4472 51475 S S
Semileds Corp. Common 816645105 3558 1043435 S S
Sims Group Common 829160100 27493 2139537 S S
Stericycle Inc Common 858912108 25058 321588 S S
Sunpower Corp class B Common 867652307 4663 748433 S S
Tetra Tech Inc Common 88162G103 24371 1128787 S S
Thermo Fisher Scientific Inc Common 883556102 6195 137763 S S
Watts Water Technologies-A Common 942749102 29745 869491 S S
Xylem Inc Common 98419M100 15987 622300 S S
3M Co Common 88579Y101 3832 46884 S S