Poster abstracts responding to the Call for Poster Abstracts for the 2011 Partners in Environmental Technology Technical Symposium & Workshop sponsored by SERDP and ESTCP must be submitted no later than July 29, 2011. This annual event assembles more than 1,200 environmental researchers and technology developers with the defense user and regulatory communities to showcase cutting edge environmental technologies and ideas, as well as communicate the most difficult challenges of our defense establishment.