by Bill Egan    Just when you think the proposal for a CDF (Confined Disposal Facility) at T4 is Slip 1 has been put on the shelf, the Port of Portland is trying to resurrect it and begin using if by 2011.  Last night at the April CAG meeting representatives for the Port told attendees the CDF was not dead but merely sleeping.  The Port has not given up on this 60 million dollar project and hopes to present more to the public this November.    In Slip 3, where two years ago the Port put in sheet piling walls (and cut off some excellent Spring crappie fishing) will undergo clamshell dredging this July-August period.  The drained water from the Port hopes to get a special permit to run it though our sewage treatment plant on Columbia Blvd.  The plant is designed for human waste and rain water and not industrial waste.  (another bad idea).    Arkema, the former chemical plant site continues to pollute the Willamette with DDT and other toxins while dragging their feet on a clean up.    The Gasco site, where NW Natural Gas spent over 30 million dollars to clean up 5% of the pollution is being looked at again for another run at clean up by the EPA.  The public will be allowed to comment before Pandora's Box is opened again.  The current cap at the site is not holding.    Ross Island's 100' plus hole has been suggested as an alternative disposal site for harbor waste.  It could be buried deep and covered with clean fill and then a cap, not subject to river current or ship traffic.    The CAG continues to ask involved parties to look at alternative clean up methods and new technology for dealing with Harbor waste.