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  • Users: mdszj
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  1. mdszj

    Need vapor pressure test for organics in aqueous mixtures

    Hello I am trying to find a test method to determine the vapor pressure of organic compounds (such as toluene, xylenes, and ethylbenzene) in an aqueous solution. The application is at a pump and treat plant for treating contaminated groundwater at a Superfund site I am working on. The...
  2. mdszj

    Method for Calculation of Average pH

    Hello My question is regarding the proper method for calculating average pH. I just heard that the proper method for determining the average pH for a group of several pH measurements is: 1) Convert each pH measurement to its corresponding hydrogen ion concentration (i.e pH = -log [H+]) 2)...
  3. mdszj

    Resistance of PVC to BCEE

    I have been trying to get data on the chemical resistance of PVC piping to an organic chemical called bis(2-chloroethyl) ether (BCEE), CAS no. 111-44-4. This info is not on any of the resistance charts I have seen. Any info is appreciated.
  4. mdszj

    Lysimeters

    Hello all I have a project in which I am evaluating the effects of adding limestone to the surface of a large area (over 100 acres) of stored river/canal dredge material. After applying the limestone, it is then disked into the soil. The objective is to determine whether adding the limestone...
  5. mdszj

    On-Line Arsenic Monitor for Water Stream

    I am working on a pump and treat project to remove arsenic from groundwater. We are interested in monitoring the arsenic concentration in the treated effluent on a continuous basis using an on-line type of instrument. The intent is to have the monitor send a notification or alarm if the...
  6. mdszj

    BCEE (bis-2-chloroethyl ether) treatment

    I am trying to track down any info or case histories on whether BCEE can be treated in-situ using oxidation by ozone, peroxide, or any other method. This material is a partially water soluble contaminant at a landfill site I am working on. I have already had lit searches done with little...
  7. mdszj

    Disinfection of Pseudomonas bacteria

    Hello, I am looking for any info or case histories of disinfecting pipes and wells that have growth of Pseudomonas bacteria. I am working on a project involving a remediation groundwater pump and treat system. The treated water is then re-injected into the subsurface by using injection wells...
  8. mdszj

    Cause of Well pump corrosion

    I have an application in which a well pump is being severely corroded. I am trying to find out how to determine whether the corrosion is caused by an electrical problem of some kind, and also find out what I can do to solve this problem, like use a sacrificial anode, etc. ANy info is appreciated.

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