diff --git a/Cantera/src/transport/LiquidTransportParams.h b/Cantera/src/transport/LiquidTransportParams.h
index e55f0bf58..c3021080f 100644
--- a/Cantera/src/transport/LiquidTransportParams.h
+++ b/Cantera/src/transport/LiquidTransportParams.h
@@ -5,27 +5,38 @@
 
 #include "ct_defs.h"
 #include "TransportBase.h"
+#include "TransportParams.h"
 #include "xml.h"
 #include "XML_Writer.h"
 
 namespace Cantera {
 
     /**
-     *
-     * Holds transport data. Used by TransportFactory.
-     *
+     * Holds transport model parameters relevant to transport in 
+     * liquids for which activated jump processes limit transport
+     * (giving Arrhenius type transport properties). 
+     * Used by TransportFactory.
      */
-    class LiquidTransportParams {
+    class LiquidTransportParams :public TransportParams {
 
     public:
 
-        LiquidTransportParams() : thermo(0), xml(0) {}
-        virtual ~LiquidTransportParams();
-        int nsp;
+        LiquidTransportParams() {}
+        ~LiquidTransportParams() {}
 
-        //        phase_t* mix;
-        thermo_t* thermo;
-        vector_fp        mw;
+
+	//section for liquid transport properties
+
+	//Arrhenius parameters for transport coefficients
+	//	std::vector<vector_fp>  viscParams; 
+	vector_fp  visc_A; 
+	vector_fp  visc_n; 
+	vector_fp  visc_Tact; 
+	vector_fp  thermCond_A; 
+	vector_fp  thermCond_n; 
+	vector_fp  thermCond_Tact; 
+	//Hydrodynamic radius of transported molecule
+	vector_fp               hydroRadius;
 
         //! Coefficients for the limiting conductivity of ions 
         //! in solution: A_k
@@ -47,26 +58,6 @@ namespace Cantera {
         vector_fp B_k_cond;
 
 
-        // polynomial fits
-        std::vector<vector_fp>  viscCoeffsVector_;
-        std::vector<vector_fp>  condcoeffs;
-        std::vector<vector_fp>  diffcoeffs ;
-
-
-        std::vector<bool> polar;
-        //vector_fp    alpha;
-        vector_fp    fitlist;
-        vector_fp    eps;
-        vector_fp    sigma;
-        DenseMatrix  reducedMass;  
-        DenseMatrix  diam;           
-        DenseMatrix  epsilon;        
-        DenseMatrix  dipole;         
-        DenseMatrix  delta;          
-        doublereal tmax, tmin;
-        int mode;
-        XML_Writer* xml;
-        int log_level;
     };
 }
 
diff --git a/Cantera/src/transport/TransportParams.h b/Cantera/src/transport/TransportParams.h
index eb46624a0..269be6751 100755
--- a/Cantera/src/transport/TransportParams.h
+++ b/Cantera/src/transport/TransportParams.h
@@ -3,7 +3,6 @@
 
 #include <vector>
 
-
 #include "ct_defs.h"
 #include "TransportBase.h"
 #include "xml.h"
@@ -11,10 +10,9 @@
 
 namespace Cantera {
 
-    /**
-     *
-     * Holds transport data. Used by TransportFactory.
-     *
+    /** 
+     * Base class to hold transport model parameters.  
+     * Used by TransportFactory.
      */
     class TransportParams {
 
@@ -22,18 +20,43 @@ namespace Cantera {
 
         TransportParams() : thermo(0), xml(0) {}
         virtual ~TransportParams();
-        int nsp;
+        int nsp_;
 
         //        phase_t* mix;
         thermo_t* thermo;
         vector_fp        mw;
 
         // polynomial fits
-        std::vector<vector_fp>            visccoeffs;
-        std::vector<vector_fp>            condcoeffs;
-        std::vector<vector_fp>            diffcoeffs;
-        vector_fp                    polytempvec;
-        
+	//temperature-fit viscosity 
+        std::vector<vector_fp>            visccoeffs; 
+	//temperature-fit heat conduction 
+        std::vector<vector_fp>            condcoeffs; 
+	//temperature-fit diffusivity 
+	std::vector<vector_fp>            diffcoeffs; 
+        vector_fp                         polytempvec;
+
+	//minimum and maximum temperatures for parameter fits
+        doublereal tmax, tmin;
+        int mode;
+        XML_Writer* xml;
+        int log_level;
+
+    };
+
+
+    /**
+     * Holds transport model parameters relevant to transport in ideal 
+     * gases with a kinetic theory of gases derived transport model. 
+     * Used by TransportFactory.
+     */
+    class GasTransportParams : public TransportParams {
+
+    public:
+
+        GasTransportParams() {}
+        ~GasTransportParams() {}
+
+
         std::vector<std::vector<int> > poly;
         std::vector<vector_fp >   omega22_poly;
         std::vector<vector_fp >   astar_poly;
@@ -53,11 +76,9 @@ namespace Cantera {
         DenseMatrix  epsilon;        
         DenseMatrix  dipole;         
         DenseMatrix  delta;          
-        doublereal tmax, tmin;
-        int mode;
-        XML_Writer* xml;
-        int log_level;
+
     };
+
 }
 
-#endif
+#endif //CT_TRANSPORTPARAMS_H