Index: Ringtoets/Common/src/Ringtoets.Common.IO/SoilProfile/SoilLayerBase.cs
===================================================================
diff -u -r86320df646dfe8564940e686a98d6199b9c3b470 -rc875fba42a23b742e55f8798f93fddf2f872e282
--- Ringtoets/Common/src/Ringtoets.Common.IO/SoilProfile/SoilLayerBase.cs	(.../SoilLayerBase.cs)	(revision 86320df646dfe8564940e686a98d6199b9c3b470)
+++ Ringtoets/Common/src/Ringtoets.Common.IO/SoilProfile/SoilLayerBase.cs	(.../SoilLayerBase.cs)	(revision c875fba42a23b742e55f8798f93fddf2f872e282)
@@ -19,9 +19,6 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
-using System;
-using System.Drawing;
-
 namespace Ringtoets.Common.IO.SoilProfile
 {
     /// <summary>
@@ -38,6 +35,7 @@
 
             BelowPhreaticLevelMean = double.NaN;
             BelowPhreaticLevelDeviation = double.NaN;
+            BelowPhreaticLevelCoefficientOfVariation = double.NaN;
             BelowPhreaticLevelShift = double.NaN;
 
             DiameterD70Mean = double.NaN;
@@ -116,6 +114,12 @@
         public double BelowPhreaticLevelDeviation { get; set; }
 
         /// <summary>
+        /// Gets or sets the coefficient of variation of the distribution for the volumic weight of the layer below the phreatic level.
+        /// [kN/m³]
+        /// </summary>
+        public double BelowPhreaticLevelCoefficientOfVariation { get; set; }
+
+        /// <summary>
         /// Gets or sets the distribution for the mean diameter of small scale tests applied to different kinds of sand, on which the 
         /// formula of Sellmeijer has been fit.
         /// [m]