******************************************************
        NOTES:
        The following file was extracted by COPA 
        from the U.S. EPA VISITT 4.0 database,
        for use on the COPA BBS.  The information
        in the VISITT database is provided
        directly by the technology vendors,
        and is not verified by EPA or COPA.
*******************************************************

        The following information is contained 
        in this file: 
                Vendor Contact Information
                Technology Description
                Technology Highlights
                Technology Limitations
                Other Comments on Technology
                Waste Applicability
                Representative Projects
                Technical References
                Estimated Price Range
                Treatability Study Capabilities
                Pilot Scale Information
                Full Scale Information

    Page No. 1 of 20                                        VISITT 4.0
    01/26/96

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                   Vendor Name:  SDTX TECHNOLOGIES, INC.                   
           Technology Type:  CHEMICAL TREATMENT - DECHLORINATION           
(s0B

  ________________________________________________________________________
                          Technology Trade Name:                          

     Address:   706 Sayre Drive                                   
                                                                  
     City:      Princeton, New York  08540
                USA                 
     Contact:   Robert Hoch                             
     Title:     VICE PRESIDENT, TECHNOLOGY              
     Phone:     (518) 734-4483
     Fax:       (518) 734-5802
     Status:    Full scale
  ________________________________________________________________________


                          DESCRIPTION OF TECHNOLOGY

SDTX KPEG, (SM) process is a chemical dehalogenation technology for  use on
soils, sediments, and sludges.  The chemistry has been  demonstrated at various
scales for PCBs, dioxins, PCP, DDT, and  chlorinated aliphatics.  Proprietary
KPEG reacts with PCBs to produce  an aromatic ether.  This ether is insoluble
in oil an can be separated  from the oil at this point.  A second reaction can
further  dechlorinate the molecule producing inorganic chlorides.

KPEG can be applied to liquids or to solids via a custom implementation to
soils, sludges or sediments by retrofit of a commercial desorber.

In a typical system, contaminated soil or sludge is fed into a  desorber with
KPEG.  The desorber heats the mixture to initiate the dechlorination.  Vapors
and treated soil or sludge exit the desorber.  Products of the reaction, free
of organic chloride, can be readily disposed of or can be burned as fuel to
fire the desorber.  The technology was licenced for full-scale use at the Wide
Beach Superfund site in New York where PCB concentrations were reduced to ppb
order of magnitude.





    Page No. 2 of 20                                        VISITT 4.0
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                   Vendor Name:  SDTX TECHNOLOGIES, INC.                   
           Technology Type:  CHEMICAL TREATMENT - DECHLORINATION           
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                            TECHNOLOGY HIGHLIGHTS

Unlike other chemical dechlorination system, KPEG does not employ a hazardous
solvent.  This leads to safer and more cost-effective application.  In
addition, complete dechlorination can be achieved avoiding any questions about
toxicity of the treated soil.

    Page No. 3 of 20                                        VISITT 4.0
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                   Vendor Name:  SDTX TECHNOLOGIES, INC.                   
           Technology Type:  CHEMICAL TREATMENT - DECHLORINATION           
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                            TECHNOLOGY LIMITATIONS

KPEG is ineffective towards non-halogenated contaminants.

    Page No. 4 of 20                                        VISITT 4.0
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                   Vendor Name:  SDTX TECHNOLOGIES, INC.                   
           Technology Type:  CHEMICAL TREATMENT - DECHLORINATION           
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                         OTHER COMMENTS ON TECHNOLOGY

KPEG was developed and patented in 1978.  The chemistry has a long and
successful history in treatment of PCB contaminated transformer oil.  SDTX has
adapted the process for use on soils, sludges, and sediments.  SDTX licensed
the patent and technology to SoilTech, Inc. for use at the Wide Beach Superfund
site in New York.  This was the largest scale demonstration of the technology
as well as the first use  of it for treatment of PCBs at a Superfund site.
Wide Beach further demonstrated the feasibility of retrofitting a desorber for
application of KPEG.


    Page No. 5 of 20                                        VISITT 4.0
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                   Vendor Name:  SDTX TECHNOLOGIES, INC.                   
           Technology Type:  CHEMICAL TREATMENT - DECHLORINATION           
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                              WASTE APPLICATIONS 

                                    Media

    Actual/Potential

        _   _  Soil (in situ)

        X_   X_  Soil (ex situ)

        _   X_  Sludge (Does not include municipal sewage sludge)

        _   X_  Solid (e.g., slag)

        _   _  Natural sediment (in situ)

        _   X_  Natural sediment (ex situ)

        _   _  Groundwater (in situ)

        _   _  Off-gas generated from a primary innovative technology

        _   _  Dense nonaqueous phase liquids (DNAPL) in situ

        _   _  Light nonaqueous phase liquids (LNAPL) in situ

    Page No. 6 of 20                                        VISITT 4.0
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                   Vendor Name:  SDTX TECHNOLOGIES, INC.                   
           Technology Type:  CHEMICAL TREATMENT - DECHLORINATION           
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                        WASTE APPLICATIONS  (Continued)

                 Contaminants and Contaminant Groups Treated

Actual/Potential                        Actual/Potential

    X_   X_  Halogenated volatiles            _   _  Heavy metals                     

    X_   X_  Halogenated semivolatiles        _   _  Nonmetallic toxic elements       

    _   _  Nonhalogenated volatiles         _   _  Radioactive metals               

    _   _  Nonhalogenated semivolatiles     _   _  Asbestos                         

    _   _  Organic pesticides/herbicides    _   _  Inorganic cyanides               

    X_   X_  Dioxins/furans                   _   _  Inorganic corrosives             

    X_   X_  PCBs                             

    _   _  Polynuclear aromatics (PNAs)            Miscellaneous_____________

    _   _  Solvents                         _   _  Explosives/propellents           

    _   _  Benzene-toluene-ethylbenzene-    _   _  Organometallic pesticides/       
           xylene (BTEX)                           herbicides

    _   _  Acetonitrile (organic cyanide)  

    _   _  Organic acids             

           Others: 

    Page No. 7 of 20                                        VISITT 4.0
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                   Vendor Name:  SDTX TECHNOLOGIES, INC.                   
           Technology Type:  CHEMICAL TREATMENT - DECHLORINATION           
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                        WASTE APPLICATIONS  (Continued)


               Industrial Waste Sources or Site Types Treated


Actual/Potential                        Actual/Potential

    _   _  Agriculture                      _   _  Munitions manufacturing          

    _   _  Battery recycling/disposal       _   _  Paint/ink formulation            

    _   _  Chloro-alkali manufacturing      _   _  Pesticide manufacturing/use      

    _   _  Coal gasification                _   _  Petroleum refining and reuse     

    _   X_  Dry cleaners                     _   _  Photographic products            

    _   _  Electroplating                   _   _  Plastics manufacturing           

    _   _  Gasoline/service station         _   _  Pulp and paper industry          

    _   _  Herbicide manufacturing/use      _   X_  Other organic chemical           
                                                   manufacturing                 
    _   _  Industrial landfills             
                                            _   _  Other inorganic chemical         
    _   _  Inorganic/organic pigments              manufacturing                 
                                             
    _   X_  Machine shops                    _   _  Rubber manufacturing             

    _   _  Metal ore mining and smelting    _   X_  Semiconductor manufacturing      

    _   _  Municipal landfill               _   _  Wood preserving                  

           Others:                          _   _  Uranium mining                   
                            ----------

    Page No. 8 of 20                                        VISITT 4.0
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                   Vendor Name:  SDTX TECHNOLOGIES, INC.                   
           Technology Type:  CHEMICAL TREATMENT - DECHLORINATION           
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                           REPRESENTATIVE PROJECTS


    Site Name or Industry Type if Client Identity Confidential:  

         Wide Beach Development                 *      ______________________________________________

    City:           Wide Beach               _________________________
    State/Province: New York            ____________________
    Country:        USA            _______________


    Project Took Place at Site Named:  Yes

    At another Site (e.g., a Test Facility): No

   Industrial Waste Sources or Site Types Treated

      _  Agriculture                      _  Paint/ink formulation

      _  Battery recycling/disposal       _  Pesticide manufacturing/use

      _  Chloro-alkali manufacturing      _  Petroleum refining and reuse

      _  Coal gasification                _  Photographic products

      _  Dry cleaning                     _  Plastics manufacturing

      _  Electroplating                   _  Pulp and paper industry

      _  Gasoline service station         _  Other organic chemical manuf.

      _  Herbicide manufacturing/use      _  Other inorganic chemical
                                               manufacturing
      _  Industrial landfills             
                                          _  Semiconductor manufacturing
      _  Inorganic/organic pigments       
                                          _  Rubber manufacturing
      _  Machine shops                    
                                          _  Wood preserving
      _  Metal ore mining and smelting    
                                          _  Uranium mining
      _  Municipal landfills              

      _  Munitions manufacturing          

      Others:            __________
PCB contaminated soil.

    Page No. 9 of 20                                        VISITT 4.0
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                   Vendor Name:  SDTX TECHNOLOGIES, INC.                   
           Technology Type:  CHEMICAL TREATMENT - DECHLORINATION           
(s0B

                           REPRESENTATIVE PROJECTS


    Site Name or Industry Type if Client Identity Confidential:  

         Wide Beach Development                 *      ______________________________________________


      Regulation/Statute/Organization               Media 


      _  RCRA Corrective Action             _  Soil (in situ) 

      X_  CERCLA                             X_  Soil (ex situ) 

      _  TSCA                               _  Sludge 

      _  Safe Drinking Water Act            _  Solid 

      _  UST Corrective Action              _  Natural Sediment (in situ)

      _  U.S. Department of Defense         _  Natural Sediment (ex situ)

      _  U.S. Department of Energy          _  Groundwater (in situ)

      _  State:                             _  Off-gas generated from a  
                                               primary treatment technology

      _  Other:                                       _  Dense nonaqueous phase    
                                               liquid (in situ)
      _  Not Applicable                     
                                            _  Light nonaqueous phase
                                               liquid (in situ)

                                            _  Other:                 






      Volume/Quantity Treated:              30,000    __________  tons           _______________(units)

      Area treated (for in situ projects):  __________  _______________(units)

      Depth treated (for in sity projects): __________  _______________(units)

    Page No. 10 of 20                                        VISITT 4.0
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                   Vendor Name:  SDTX TECHNOLOGIES, INC.                   
           Technology Type:  CHEMICAL TREATMENT - DECHLORINATION           
(s0B

                           REPRESENTATIVE PROJECTS


    Site Name or Industry Type if Client Identity Confidential:  

         Wide Beach Development                 *      ______________________________________________


      Application Type


   X_  Full-scale cleanup                   _  TSCA Research and Development

   _  Field Demonstration                  _  EPA SITE Demonstration Program

   _  Pilot scale treatability study       _  EPA SITE Emerging Technology
                                              Program
   _  RCRA Research, Development and Demo  
                                           _  Research
   _  TSCA National Demonstration          

   Other:            __________




    Estimated or actual total and/or unit cost for this project

    Cost:  ____________  Units:  _________________  Total:  ____________
    Page No. 11 of 20                                        VISITT 4.0
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                   Vendor Name:  SDTX TECHNOLOGIES, INC.                   
           Technology Type:  CHEMICAL TREATMENT - DECHLORINATION           
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                           REPRESENTATIVE PROJECTS


    Site Name or Industry Type if Client Identity Confidential:  

         Wide Beach Development                 *      ______________________________________________


    Performance Data

Contaminant                   Untreated Concent.    Treated Concent.      
----------------------------- --------------------- --------------------- 

PCBs                                  35      mg/kg         0.076   mg/kg 



    Page No. 12 of 20                                        VISITT 4.0
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                   Vendor Name:  SDTX TECHNOLOGIES, INC.                   
           Technology Type:  CHEMICAL TREATMENT - DECHLORINATION           
(s0B

                           REPRESENTATIVE PROJECTS


    Site Name or Industry Type if Client Identity Confidential:  

         Wide Beach Development                 *      ______________________________________________


    Person outside company familiar with project (optional):


        Name:    ________________________________________

        Company: ________________________________________

        Address: ________________________________________

                 ________________________________________

        Phone:   




     Additional Project Information:      _______________

    Page No. 13 of 20                                        VISITT 4.0
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                   Vendor Name:  SDTX TECHNOLOGIES, INC.                   
           Technology Type:  CHEMICAL TREATMENT - DECHLORINATION           
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                            TECHNICAL REFERENCES


    Author(s): 

    A. Bruce King & Robert Hoch                                             ________________________________________________________________________

    ________________________________________________________________________


    Title: 

    Complete Dechlorination of Chloroaromatics w/Alkaline PEG Ch            ________________________________________________________________________

    ________________________________________________________________________


    Journal/Conference: 

    AWA Meeting, Vancouver, Canada                                          ________________________________________________________________________

    ________________________________________________________________________


    Date: 06/01               ____________________    NTIS/EPA Document Number(s): _________________________


    Page No. 14 of 20                                        VISITT 4.0
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                   Vendor Name:  SDTX TECHNOLOGIES, INC.                   
           Technology Type:  CHEMICAL TREATMENT - DECHLORINATION           
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                            TECHNICAL REFERENCES


    Author(s): 

    Robert Hoch & R. Douglas Hulse                                          ________________________________________________________________________

    ________________________________________________________________________


    Title: 

    Improved KPEG Technology                                                ________________________________________________________________________

    ________________________________________________________________________


    Journal/Conference: 

    Presented at PCB Forum 1991, Houston, TX                                ________________________________________________________________________

    ________________________________________________________________________


    Date: 03/01               ____________________    NTIS/EPA Document Number(s): _________________________


    Page No. 15 of 20                                        VISITT 4.0
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                   Vendor Name:  SDTX TECHNOLOGIES, INC.                   
           Technology Type:  CHEMICAL TREATMENT - DECHLORINATION           
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                            TECHNICAL REFERENCES


    Author(s): 

    Robert Hoch                                                             ________________________________________________________________________

    ________________________________________________________________________


    Title: 

    Process Technology for Haz. Waste Remediation-KPEG & Reducti            ________________________________________________________________________

    ________________________________________________________________________


    Journal/Conference: 

    10th Industry-Univ. Cooperative Chemistry - Texas A&M                   ________________________________________________________________________

    ________________________________________________________________________


    Date: 03/01               ____________________    NTIS/EPA Document Number(s): _________________________


    Page No. 16 of 20                                        VISITT 4.0
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                   Vendor Name:  SDTX TECHNOLOGIES, INC.                   
           Technology Type:  CHEMICAL TREATMENT - DECHLORINATION           
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                            TECHNICAL REFERENCES


    Author(s): 

    David Corbin US Patent and Trademark Office                             ________________________________________________________________________

    ________________________________________________________________________


    Title: 

    US Patent and Trademark Office Number 5,037,240                         ________________________________________________________________________

    ________________________________________________________________________


    Journal/Conference: 

    Crystal Park Arlington Va. 22202 703-414-2277                           ________________________________________________________________________

    ________________________________________________________________________


    Date: 07/19               ____________________    NTIS/EPA Document Number(s): _________________________


    Page No. 17 of 20                                        VISITT 4.0
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                   Vendor Name:  SDTX TECHNOLOGIES, INC.                   
           Technology Type:  CHEMICAL TREATMENT - DECHLORINATION           
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                           ESTIMATED PRICE RANGE                           


             Estimated price range per unit of waste treated :             


        $ 100.00    __________  to  $ 300.00    __________  per  ton            _______________


   Price estimates shown above do not always include all indirect costs
   associated with treatment, such as excavation, permits and treatment
   of residuals.  For price comparisons, users should make certain that
   vendors provide estimates based on comparable remediation activities.



    Factors that have a significant effect on unit price. (1 is highest).

      __  Initial contaminant concentration    3__  Moisture content of soil

      __  Target contaminant concentration    __  Site Preparation

       1__  Quantity of waste                   __  Waste handling/preprocessing 

      __  Depth of contamination              __  Amount of debris with waste         

      __  Depth to groundwater                 2__  Characteristics of soil

      __  Characteristics of residual waste   __  Utility/Fuel rates

      __  Labor Rates                        

      Others:            __________

    Page No. 18 of 20                                        VISITT 4.0
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                   Vendor Name:  SDTX TECHNOLOGIES, INC.                   
           Technology Type:  CHEMICAL TREATMENT - DECHLORINATION           
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                TREATABILITY STUDY CAPABILITIES (BENCH-SCALE)


         Description of bench-scale testing procedures: 

                                ----------

SDTX contracts out its treatability testing to National Environmental
Technology Applications Corporation (NETAC) which is fully permitted.  A number
of tests and details of procedure are proprietary.  The objective is to predict
full-scale performance from bench-scale data.  A previous bench-scale
treatability conducted by NETAC is described below:

The objective was to determine the rate of removal of chlorine from model
aromatic compounds.  In contrast to many other environmental studies, this work
determined the total amount of chloride ion released as a function of reaction
temperature, time, and stoichiometry.  This approach differs from the usual
environmental test which measures the fraction of the chlorinated aromatic that
has reacted - presumably measuring therefore only the first chlorine removal.

Several distinct reactor configurations were employed.  At low temperature,
i.e., less than 150 degrees Centigrade, and below the boiling point of the
reaction solvent, the heater block was placed on a hot plate, or a three neck
flask with nitrogen purge was used.  For the highest temperature runs, a 3/16
stainless steel high pressure bomb, immersed in a fluidized sand bath and
agitated by an internal stainless steel ball, served as the reactor.

After reaction, the mixtures were quenched by acidification, diluted with water
and the chloride released was measured using a specific ion electrode.

A strong correlation can be seen between the achievable degree of
dechlorination and reaction temperature.  Loosely speaking, 50 percent
dechlorination is found overnight at room temperature.  The fourth chlorine
atom can be reacted in two hours at 80 degrees Centigrade; the fifth requires
150 degrees Centigrade and complete dechlorination is observed in the 185 - 200
degrees Centigrade temperature range.  Data also show that the effect of
reagent stoichiometry is not dominant.









     Can you conduct bench-scale treatability studies on some
     types of waste at your location:     No


     Number of bench-scale studies conducted to date.
     (Does not include tests on surrogate wastes) :    0_____


    Page No. 19 of 20                                        VISITT 4.0
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                   Vendor Name:  SDTX TECHNOLOGIES, INC.                   
           Technology Type:  CHEMICAL TREATMENT - DECHLORINATION           
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                           FULL SCALE INFORMATION


    Major unit processes :  

The KPEG (SM) process can be carried out in many full-scale desorbers. Any
desorber with suitable solids residence time and temperature capability can be
used.

In a typical arrangement contaminated sludge or soil is fed into a desorber.
KPEG is added to the desorber.  The mixture is heated to initiate the
dechlorination reaction.  Vapors and treated slugde or soil exit the desorber.
Vapors are condensed and sent to a phase separator.  The overhead organic
stream obtained after phase separation can be further reacted with KPEG or
another treatment in a separate reactor.  Uncondensed vapors are sent to an
off-gas handling system.

It may be necessary to adjust unit operation to ensure that no PCBs or other
hazardous contaminants are contained in the aqueous overhead stream.



    Page No. 20 of 20                                        VISITT 4.0
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                   Vendor Name:  SDTX TECHNOLOGIES, INC.                   
           Technology Type:  CHEMICAL TREATMENT - DECHLORINATION           
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                     FULL SCALE INFORMATION (Continued)


    Vendor services:     _  Equipment manufacture

                         X_  Subcontractor for cleanup services

                         _  Prime contractor for full-service remediation

                         _  Other:                                              
                                                                                  


    Full-scale facility is:


      X_  Transportable     _  Fixed     _  In situ




    Number of full-scale cleanups initiated or completed by this firm
    using this technology:      1______


    Number of full-scale systems: 

             1_____  Planned/in design

             0_____  Under construction

             0_____  Constructed


    Capacity range: 50          ____________ to 250         ____________  cubic yards/hr _______________



    For equipment manufacturers - estimated or actual number of 
    full-scale cleanups by other firms using this equipment:       0______