Index: Ringtoets/Piping/src/Ringtoets.Piping.Data/Properties/Resources.Designer.cs
===================================================================
diff -u -r0f8ecad9de486dac8a81bb9de57e76ca6cf8a104 -r63511ecef2fc0350f51475d844b88e870f440075
--- Ringtoets/Piping/src/Ringtoets.Piping.Data/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision 0f8ecad9de486dac8a81bb9de57e76ca6cf8a104)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Data/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision 63511ecef2fc0350f51475d844b88e870f440075)
@@ -224,6 +224,15 @@
         }
         
         /// <summary>
+        ///   Looks up a localized string similar to Kan uittredepunt niet zetten..
+        /// </summary>
+        public static string RingtoetsPipingSurfaceLine_ExitPointL_Cannot_set_exit_point_at_L_0 {
+            get {
+                return ResourceManager.GetString("RingtoetsPipingSurfaceLine_ExitPointL_Cannot_set_exit_point_at_L_0", resourceCulture);
+            }
+        }
+        
+        /// <summary>
         ///   Looks up a localized string similar to Kan geen hoogte bepalen..
         /// </summary>
         public static string RingtoetsPipingSurfaceLine_GetZAtL_Cannot_determine_height {
Index: Ringtoets/Piping/src/Ringtoets.Piping.Data/Properties/Resources.resx
===================================================================
diff -u -r0f8ecad9de486dac8a81bb9de57e76ca6cf8a104 -r63511ecef2fc0350f51475d844b88e870f440075
--- Ringtoets/Piping/src/Ringtoets.Piping.Data/Properties/Resources.resx	(.../Resources.resx)	(revision 0f8ecad9de486dac8a81bb9de57e76ca6cf8a104)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Data/Properties/Resources.resx	(.../Resources.resx)	(revision 63511ecef2fc0350f51475d844b88e870f440075)
@@ -183,4 +183,7 @@
   <data name="RingtoetsPipingSurfaceLine_GetZAtL_Cannot_determine_height" xml:space="preserve">
     <value>Kan geen hoogte bepalen.</value>
   </data>
+  <data name="RingtoetsPipingSurfaceLine_ExitPointL_Cannot_set_exit_point_at_L_0" xml:space="preserve">
+    <value>Kan uittredepunt niet zetten.</value>
+  </data>
 </root>
\ No newline at end of file
Index: Ringtoets/Piping/src/Ringtoets.Piping.Data/RingtoetsPipingSurfaceLine.cs
===================================================================
diff -u -r0f8ecad9de486dac8a81bb9de57e76ca6cf8a104 -r63511ecef2fc0350f51475d844b88e870f440075
--- Ringtoets/Piping/src/Ringtoets.Piping.Data/RingtoetsPipingSurfaceLine.cs	(.../RingtoetsPipingSurfaceLine.cs)	(revision 0f8ecad9de486dac8a81bb9de57e76ca6cf8a104)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Data/RingtoetsPipingSurfaceLine.cs	(.../RingtoetsPipingSurfaceLine.cs)	(revision 63511ecef2fc0350f51475d844b88e870f440075)
@@ -38,6 +38,7 @@
     {
         private Point3D[] geometryPoints;
         private double entryPointL;
+        private double exitPointL;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="RingtoetsPipingSurfaceLine"/> class.
@@ -114,10 +115,29 @@
         }
 
         /// <summary>
+        /// Gets or sets the L-coördinate of the exit point.
+        /// </summary>
+        /// <exception cref="ArgumentOutOfRangeException"><paramref name="value"/> is not in range of the LZ-projected <see cref="Points"/>.</exception>
+        /// <exception cref="InvalidOperationException"><see cref="Points"/> is empty.</exception>
+        public double ExitPointL
+        {
+            get
+            {
+                return exitPointL;
+            }
+            set
+            {
+                ValidateHasPoints();
+                ValidateInRange(value, ProjectGeometryToLZ().ToArray(), Resources.RingtoetsPipingSurfaceLine_ExitPointL_Cannot_set_exit_point_at_L_0);
+                exitPointL = value;
+            }
+        }
+
+        /// <summary>
         /// Sets the geometry of the surfaceline.
         /// </summary>
         /// <param name="points">The collection of points defining the surfaceline geometry.</param>
-        /// <exception cref="ArgumentException">Thrown when any of the <paramref name="points"/> has no value (== <c>null</c>).</exception>
+        /// <exception cref="ArgumentException">Thrown when any element of <paramref name="points"/> is <c>null</c>.</exception>
         public void SetGeometry(IEnumerable<Point3D> points)
         {
             if (points == null)
Index: Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/RingtoetsPipingSurfaceLineTest.cs
===================================================================
diff -u -r0f8ecad9de486dac8a81bb9de57e76ca6cf8a104 -r63511ecef2fc0350f51475d844b88e870f440075
--- Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/RingtoetsPipingSurfaceLineTest.cs	(.../RingtoetsPipingSurfaceLineTest.cs)	(revision 0f8ecad9de486dac8a81bb9de57e76ca6cf8a104)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/RingtoetsPipingSurfaceLineTest.cs	(.../RingtoetsPipingSurfaceLineTest.cs)	(revision 63511ecef2fc0350f51475d844b88e870f440075)
@@ -1,7 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-
+using System.Runtime.Remoting;
 using Core.Common.Base.Geometry;
 using Core.Common.TestUtil;
 using NUnit.Framework;
@@ -414,6 +414,7 @@
             // Assert
             Assert.AreEqual(testL, surfaceLine.EntryPointL);
         }
+
         [Test]
         [TestCase(-1.0)]
         [TestCase(-1e-6)]
@@ -445,6 +446,93 @@
             TestHelper.AssertThrowsArgumentExceptionAndTestMessage<ArgumentOutOfRangeException>(test, expectedMessage);
         }
 
+        [Test]
+        public void EntryPointL_EmptyGeometry_ThrowsInvalidOperationException()
+        {
+            // Setup
+            var surfaceLine = new RingtoetsPipingSurfaceLine();
+
+            // Call
+            TestDelegate test = () => surfaceLine.EntryPointL = new Random(21).NextDouble();
+
+            // Assert
+            var expectedMessage = "De profielmeting heeft geen geometrie.";
+            var message = Assert.Throws<InvalidOperationException>(test).Message;
+            Assert.AreEqual(expectedMessage, message);
+        }
+
+        [Test]
+        [TestCase(0.0)]
+        [TestCase(3.0)]
+        [TestCase(4.0)]
+        public void ExitPointL_WithinGeometryRange_ValueSet(double testL)
+        {
+            // Setup
+            var surfaceLine = new RingtoetsPipingSurfaceLine();
+            surfaceLine.SetGeometry(new[]
+            {
+                new Point3D
+                {
+                    X = 1.0, Y = 0.0, Z = 0.0
+                },
+                new Point3D
+                {
+                    X = 5.0, Y = 0.0, Z = 0.0
+                }
+            });
+
+            // Call
+            surfaceLine.ExitPointL = testL;
+
+            // Assert
+            Assert.AreEqual(testL, surfaceLine.ExitPointL);
+        }
+        [Test]
+        [TestCase(-1.0)]
+        [TestCase(-1e-6)]
+        [TestCase(4.1 + 1e-6)]
+        [TestCase(5.0)]
+        public void ExitPointL_OutsideGeometryRange_ThrowsArgumentOutOfRangeException(double testL)
+        {
+            // Setup
+            var surfaceLine = new RingtoetsPipingSurfaceLine();
+            var min = 1.0;
+            var max = 5.1;
+            surfaceLine.SetGeometry(new[]
+            {
+                new Point3D
+                {
+                    X = min, Y = 0.0, Z = 0.0
+                },
+                new Point3D
+                {
+                    X = max, Y = 0.0, Z = 0.0
+                }
+            });
+
+            // Call
+            TestDelegate test = () => surfaceLine.ExitPointL = testL;
+
+            // Assert
+            var expectedMessage = "Kan uittredepunt niet zetten. L moet in het bereik van [0, 4.1] liggen.";
+            TestHelper.AssertThrowsArgumentExceptionAndTestMessage<ArgumentOutOfRangeException>(test, expectedMessage);
+        }
+
+        [Test]
+        public void ExitPointL_EmptyGeometry_ThrowsInvalidOperationException()
+        {
+            // Setup
+            var surfaceLine = new RingtoetsPipingSurfaceLine();
+
+            // Call
+            TestDelegate test = () => surfaceLine.ExitPointL = new Random(21).NextDouble();
+
+            // Assert
+            var expectedMessage = "De profielmeting heeft geen geometrie.";
+            var message = Assert.Throws<InvalidOperationException>(test).Message;
+            Assert.AreEqual(expectedMessage, message);
+        }
+
         private static void CreateTestGeometry(Point3D testPoint, RingtoetsPipingSurfaceLine surfaceLine)
         {
             var random = new Random(21);