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Recent content by 1ddt

  1. 1ddt

    Molasses Injection Questions

    This is true about the daughter products being'spawned' and the chance for the reductive dehalogenations 'stalling'. Arcadis was the originator of the blackstrap molasses technic for injection of a carbon source; however, as 4tuna interjected, one way to eliminate this would be to consider the...
  2. 1ddt

    Environmental Engineering - Good Career?

    Dear Binary, My degree is environmental engineering with an emphasis on fate and transport modeling. I've found myself, in the past 10 years, involved in a variety of sites in which a chemical background has proven invaluable in terms of plume forensics. I love my job and I still remember the...
  3. 1ddt

    Using geophysical methods in CPT

    Are you looking to quickly bracket a plume of LNAPL (direct push with SCAPs or UVIF), or just aquifer info. E-mail me and I can send you some URL's. best regards ddt
  4. 1ddt

    dry cleaning solvent (PCE) remediation

    The one problem I have, which hopefully is endemic only to our sole source Central Valley Aquifer, is the fact that it's quite cost prohibitive to search for DNAPLs due to our alluvium containing discontinuous clay lenses. Usually, if were are talking about a mom-and pop dry cleaning facility...
  5. 1ddt

    dry cleaning solvent (PCE) remediation

    If there's a confining layer at 9 ft bgs, you might also consider a funnel and gate system (ala Waterloo). It's a great system which, unfortunately, in my area, we can't use due to the depth of confining layers.
  6. 1ddt

    dry cleaning solvent (PCE) remediation

    Groundwork (environmental) I've had alot of luck with the molasses injection in the source area, or some other carbon sourcr. If the regulatory agencies will allow it, potassium permanganate does quite nicely as there are no daughter products spawned. The offshoot is that groundwater will...

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