Index: Ringtoets/Piping/src/Ringtoets.Piping.Data/RingtoetsPipingSurfaceLine.cs
===================================================================
diff -u -ra950714ad9510756331d862aa35695fa0b2ed03b -r5462a7ee52b9491f269d489a094d359f4f02f270
--- Ringtoets/Piping/src/Ringtoets.Piping.Data/RingtoetsPipingSurfaceLine.cs	(.../RingtoetsPipingSurfaceLine.cs)	(revision a950714ad9510756331d862aa35695fa0b2ed03b)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Data/RingtoetsPipingSurfaceLine.cs	(.../RingtoetsPipingSurfaceLine.cs)	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -28,9 +28,15 @@
         public string Name { get; set; }
 
         /// <summary>
-        /// Gets or sets the 3D points describing its geometry.
+        /// Gets the 3D points describing its geometry.
         /// </summary>
-        public IEnumerable<Point3D> Points { get {return geometryPoints; } }
+        public IEnumerable<Point3D> Points
+        {
+            get
+            {
+                return geometryPoints;
+            }
+        }
 
         /// <summary>
         /// Gets or sets the first 3D geometry point defining the surfaceline in world coordinates.
@@ -57,11 +63,11 @@
             }
         }
 
-        public override string ToString()
-        {
-            return Name;
-        }
-
+        /// <summary>
+        /// Projects the points in <see cref="Points"/> to localized coordinate (LZ-plane) system.
+        /// Z-values are retained, and the first point is put a L=0.
+        /// </summary>
+        /// <returns>Collection of 2D points in the LZ-plane.</returns>
         public IEnumerable<Point2D> ProjectGeometryToLZ()
         {
             var count = geometryPoints.Length;
@@ -76,45 +82,56 @@
             {
                 ProjectPointsAfterFirstOntoSpanningLine(localCoordinatesX);
             }
-            
+
             var result = new Point2D[count];
             for (int i = 0; i < count; i++)
             {
-                result[i] = new Point2D { X = localCoordinatesX[i], Y = geometryPoints[i].Z };
+                result[i] = new Point2D
+                {
+                    X = localCoordinatesX[i], Y = geometryPoints[i].Z
+                };
             }
             return result;
         }
 
+        public override string ToString()
+        {
+            return Name;
+        }
+
         /// <summary>
         /// This method defines the 'spanning line' as the 2D vector going from start to end
         /// of the surface line points. Then all except the first point is projected onto
         /// this vector. Then the local coordinates are determined by taking the length of
         /// each vector along the 'spanning line'.
         /// </summary>
         /// <param name="localCoordinatesX">The array into which the projected X-coordinate 
-        /// values should be stored. It's <see cref="Array.Length"/> should be the same as
+        /// values should be stored. Its <see cref="Array.Length"/> should be the same as
         /// the collection-size of <see cref="geometryPoints"/>.</param>
         private void ProjectPointsAfterFirstOntoSpanningLine(double[] localCoordinatesX)
         {
             // Determine the vectors from the first coordinate to each other coordinate point 
             // in the XY world coordinate plane:
-            var worldCoordinates = Points.Select(p => new Point2D { X = p.X, Y = p.Y }).ToArray();
+            Point2D[] worldCoordinates = Points.Select(p => new Point2D
+            {
+                X = p.X, Y = p.Y
+            }).ToArray();
             var worldCoordinateVectors = new Vector[worldCoordinates.Length - 1];
             for (int i = 1; i < worldCoordinates.Length; i++)
             {
                 worldCoordinateVectors[i - 1] = worldCoordinates[i] - worldCoordinates[0];
             }
 
             // Determine the 'spanning line' vector:
-            var spanningVector = worldCoordinateVectors[worldCoordinateVectors.Length - 1];
-            var spanningVectorDotProduct = spanningVector.DotProduct(spanningVector);
-            var length = Math.Sqrt(spanningVectorDotProduct);
+            Vector spanningVector = worldCoordinateVectors[worldCoordinateVectors.Length - 1];
+            double spanningVectorDotProduct = spanningVector.DotProduct(spanningVector);
+            double length = Math.Sqrt(spanningVectorDotProduct);
 
             // Project each vector onto the 'spanning vector' to determine it's X coordinate in local coordinates:
             for (int i = 0; i < worldCoordinateVectors.Length - 1; i++)
             {
-                var projectOnSpanningVectorFactor = (worldCoordinateVectors[i].DotProduct(spanningVector)) /
-                                                    (spanningVectorDotProduct);
+                double projectOnSpanningVectorFactor = (worldCoordinateVectors[i].DotProduct(spanningVector)) /
+                                                       (spanningVectorDotProduct);
                 localCoordinatesX[i + 1] = projectOnSpanningVectorFactor * length;
             }
             localCoordinatesX[localCoordinatesX.Length - 1] = length;
Index: Ringtoets/Piping/src/Ringtoets.Piping.IO/Exceptions/CriticalFileReadException.cs
===================================================================
diff -u -ra950714ad9510756331d862aa35695fa0b2ed03b -r5462a7ee52b9491f269d489a094d359f4f02f270
--- Ringtoets/Piping/src/Ringtoets.Piping.IO/Exceptions/CriticalFileReadException.cs	(.../CriticalFileReadException.cs)	(revision a950714ad9510756331d862aa35695fa0b2ed03b)
+++ Ringtoets/Piping/src/Ringtoets.Piping.IO/Exceptions/CriticalFileReadException.cs	(.../CriticalFileReadException.cs)	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -26,7 +26,8 @@
         /// the cause of this exception.
         /// </summary>
         /// <param name="message">The error message that explains the reason for the exception.</param>
-        /// <param name="inner">The exception that is the cause of the current exception, or a null reference (Nothing in Visual Basic) if no inner exception is specified.</param>
+        /// <param name="inner">The exception that is the cause of the current exception, 
+        /// or a null reference if no inner exception is specified.</param>
         public CriticalFileReadException(string message, Exception inner) : base(message, inner) { }
     }
 }
\ No newline at end of file
Index: Ringtoets/Piping/src/Ringtoets.Piping.IO/Exceptions/LineParseException.cs
===================================================================
diff -u -ra950714ad9510756331d862aa35695fa0b2ed03b -r5462a7ee52b9491f269d489a094d359f4f02f270
--- Ringtoets/Piping/src/Ringtoets.Piping.IO/Exceptions/LineParseException.cs	(.../LineParseException.cs)	(revision a950714ad9510756331d862aa35695fa0b2ed03b)
+++ Ringtoets/Piping/src/Ringtoets.Piping.IO/Exceptions/LineParseException.cs	(.../LineParseException.cs)	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -27,7 +27,7 @@
         /// </summary>
         /// <param name="message">The error message that explains the reason for the exception.</param>
         /// <param name="inner">The exception that is the cause of the current exception, 
-        /// or a null reference (Nothing in Visual Basic) if no inner exception is specified.</param>
+        /// or a null reference if no inner exception is specified.</param>
         public LineParseException(string message, Exception inner) : base(message, inner) { }
     }
 }
\ No newline at end of file
Index: Ringtoets/Piping/src/Ringtoets.Piping.IO/FileUtils.cs
===================================================================
diff -u
--- Ringtoets/Piping/src/Ringtoets.Piping.IO/FileUtils.cs	(revision 0)
+++ Ringtoets/Piping/src/Ringtoets.Piping.IO/FileUtils.cs	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -0,0 +1,41 @@
+using System;
+using System.IO;
+
+using Ringtoets.Piping.IO.Properties;
+
+namespace Ringtoets.Piping.IO
+{
+    /// <summary>
+    /// Class with reusable File related utility methods.
+    /// </summary>
+    static internal class FileUtils 
+    {
+        /// <summary>
+        /// Validates the file path.
+        /// </summary>
+        /// <param name="path">The file path to be validated.</param>
+        /// <exception cref="System.ArgumentException"><paramref name="path"/> is invalid.</exception>
+        public  static void ValidateFilePath(string path)
+        {
+            if (String.IsNullOrWhiteSpace(path))
+            {
+                throw new ArgumentException(Resources.Error_PathMustBeSpecified);
+            }
+
+            string name;
+            try
+            {
+                name = Path.GetFileName(path);
+            }
+            catch (ArgumentException e)
+            {
+                throw new ArgumentException(String.Format(Resources.Error_PathCannotContainCharacters_0_,
+                                                          String.Join(", ", Path.GetInvalidFileNameChars())), e);
+            }
+            if (String.Empty == name)
+            {
+                throw new ArgumentException(Resources.Error_PathMustNotPointToFolder);
+            }
+        }
+    }
+}
\ No newline at end of file
Index: Ringtoets/Piping/src/Ringtoets.Piping.IO/PipingSurfaceLinesCsvReader.cs
===================================================================
diff -u -ra950714ad9510756331d862aa35695fa0b2ed03b -r5462a7ee52b9491f269d489a094d359f4f02f270
--- Ringtoets/Piping/src/Ringtoets.Piping.IO/PipingSurfaceLinesCsvReader.cs	(.../PipingSurfaceLinesCsvReader.cs)	(revision a950714ad9510756331d862aa35695fa0b2ed03b)
+++ Ringtoets/Piping/src/Ringtoets.Piping.IO/PipingSurfaceLinesCsvReader.cs	(.../PipingSurfaceLinesCsvReader.cs)	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -17,7 +17,7 @@
     /// Expects data to be specified in the following format:
     /// <para><c>{ID};X1;Y1;Z1...;(Xn;Yn;Zn)</c></para>
     /// Where {ID} has to be a particular accepted text, and n triplets of doubles form the
-    /// 3D coordinates defining the geometric shape of the surfaceline..
+    /// 3D coordinates defining the geometric shape of the surfaceline.
     /// </summary>
     public class PipingSurfaceLinesCsvReader : IDisposable
     {
@@ -49,7 +49,7 @@
         /// <exception cref="ArgumentException"><paramref name="path"/> is invalid.</exception>
         public PipingSurfaceLinesCsvReader(string path)
         {
-            ValidateFilePath(path);
+            FileUtils.ValidateFilePath(path);
 
             filePath = path;
         }
@@ -129,7 +129,7 @@
                     };
                     surfaceLine.SetGeometry(points);
 
-                    CheckGeometry(surfaceLine);
+                    CheckIfGeometryIsValid(surfaceLine);
 
                     return surfaceLine;
                 }
@@ -142,16 +142,16 @@
             return null;
         }
 
-        private void CheckGeometry(RingtoetsPipingSurfaceLine surfaceLine)
+        private void CheckIfGeometryIsValid(RingtoetsPipingSurfaceLine surfaceLine)
         {
             double[] lCoordinates = surfaceLine.ProjectGeometryToLZ().Select(p => p.X).ToArray();
             for (int i = 1; i < lCoordinates.Length; i++)
             {
                 if (lCoordinates[i - 1] > lCoordinates[i])
                 {
-                    var expectedMessage = string.Format(Resources.PipingSurfaceLinesCsvReader_ReadLine_File_0_Line_1_Has_reclining_geometry,
-                                                        filePath, 2);
-                    throw new LineParseException(expectedMessage);
+                    var message = string.Format(Resources.PipingSurfaceLinesCsvReader_ReadLine_File_0_Line_1_Has_reclining_geometry,
+                                                filePath, 2);
+                    throw new LineParseException(message);
                 }
             }
         }
@@ -188,7 +188,7 @@
         /// Gets the 3D surface line points.
         /// </summary>
         /// <param name="tokenizedString">The tokenized string.</param>
-        /// <returns>Set of all unique 3D world coordinate points.</returns>
+        /// <returns>Set of all 3D world coordinate points.</returns>
         /// <exception cref="LineParseException">A parse error has occurred for the current row, which may be caused by:
         /// <list type="bullet">
         /// <item><paramref name="tokenizedString"/> contains a coordinate value that cannot be parsed as a double.</item>
@@ -219,7 +219,7 @@
                     Z = worldCoordinateValues[i * expectedValuesForPoint + 2]
                 };
             }
-            return points.Distinct();
+            return points;
         }
 
         /// <summary>
@@ -316,14 +316,14 @@
             {
                 if (!IsHeaderValid(header))
                 {
-                    var expectedMessage = string.Format(Resources.PipingSurfaceLinesCsvReader_File_0_invalid_header, filePath);
-                    throw new CriticalFileReadException(expectedMessage);
+                    var message = string.Format(Resources.PipingSurfaceLinesCsvReader_File_0_invalid_header, filePath);
+                    throw new CriticalFileReadException(message);
                 }
             }
             else
             {
-                var expectedMessage = string.Format(Resources.Error_File_0_empty, filePath);
-                throw new CriticalFileReadException(expectedMessage);
+                var message = string.Format(Resources.Error_File_0_empty, filePath);
+                throw new CriticalFileReadException(message);
             }
         }
 
@@ -332,7 +332,7 @@
         /// </summary>
         /// <param name="reader">The reader at the row from which counting should start.</param>
         /// <param name="currentLine">The current line, used for error messaging.</param>
-        /// <returns>An integer greater than or equal to 0.</returns>
+        /// <returns>An integer greater than or equal to 0, being the number of surfaceline rows.</returns>
         /// <exception cref="CriticalFileReadException">An I/O exception occurred.</exception>
         private int CountNonEmptyLines(TextReader reader, int currentLine)
         {
@@ -392,33 +392,5 @@
             }
             return valid;
         }
-
-        /// <summary>
-        /// Validates the file path.
-        /// </summary>
-        /// <param name="path">The file path to be validated.</param>
-        /// <exception cref="System.ArgumentException"><paramref name="path"/> is invalid.</exception>
-        private void ValidateFilePath(string path)
-        {
-            if (string.IsNullOrWhiteSpace(path))
-            {
-                throw new ArgumentException(Resources.Error_PathMustBeSpecified);
-            }
-
-            string name;
-            try
-            {
-                name = Path.GetFileName(path);
-            }
-            catch (ArgumentException e)
-            {
-                throw new ArgumentException(String.Format(Resources.Error_PathCannotContainCharacters_0_,
-                                                          String.Join(", ", Path.GetInvalidFileNameChars())), e);
-            }
-            if (string.Empty == name)
-            {
-                throw new ArgumentException(Resources.Error_PathMustNotPointToFolder);
-            }
-        }
     }
 }
\ No newline at end of file
Index: Ringtoets/Piping/src/Ringtoets.Piping.IO/Ringtoets.Piping.IO.csproj
===================================================================
diff -u -ra950714ad9510756331d862aa35695fa0b2ed03b -r5462a7ee52b9491f269d489a094d359f4f02f270
--- Ringtoets/Piping/src/Ringtoets.Piping.IO/Ringtoets.Piping.IO.csproj	(.../Ringtoets.Piping.IO.csproj)	(revision a950714ad9510756331d862aa35695fa0b2ed03b)
+++ Ringtoets/Piping/src/Ringtoets.Piping.IO/Ringtoets.Piping.IO.csproj	(.../Ringtoets.Piping.IO.csproj)	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -22,7 +22,8 @@
     <UseVSHostingProcess>false</UseVSHostingProcess>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
-    <DocumentationFile></DocumentationFile>
+    <DocumentationFile>
+    </DocumentationFile>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x86'">
     <OutputPath>bin\Release\</OutputPath>
@@ -33,7 +34,8 @@
     <PlatformTarget>x86</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
-    <DocumentationFile></DocumentationFile>
+    <DocumentationFile>
+    </DocumentationFile>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="..\..\..\..\Core\Common\src\Core.Common.Version\GlobalAssembly.cs">
@@ -48,6 +50,7 @@
     <Compile Include="Exceptions\CriticalFileReadException.cs" />
     <Compile Include="Exceptions\LineParseException.cs" />
     <Compile Include="Exceptions\PipingSoilProfileReadException.cs" />
+    <Compile Include="FileUtils.cs" />
     <Compile Include="PipingSoilLayer2DReader.cs" />
     <Compile Include="PipingSoilProfileReader.cs" />
     <Compile Include="PipingSurfaceLinesCsvReader.cs" />
Index: Ringtoets/Piping/src/Ringtoets.Piping.Plugin/FileImporter/PipingSurfaceLinesCsvImporter.cs
===================================================================
diff -u -ra950714ad9510756331d862aa35695fa0b2ed03b -r5462a7ee52b9491f269d489a094d359f4f02f270
--- Ringtoets/Piping/src/Ringtoets.Piping.Plugin/FileImporter/PipingSurfaceLinesCsvImporter.cs	(.../PipingSurfaceLinesCsvImporter.cs)	(revision a950714ad9510756331d862aa35695fa0b2ed03b)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Plugin/FileImporter/PipingSurfaceLinesCsvImporter.cs	(.../PipingSurfaceLinesCsvImporter.cs)	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -2,11 +2,13 @@
 using System.Collections.Generic;
 using System.Drawing;
 using System.IO;
+using System.Linq;
+
 using Core.Common.BaseDelftTools;
+
 using log4net;
 
 using Ringtoets.Piping.Data;
-
 using Ringtoets.Piping.IO;
 using Ringtoets.Piping.IO.Exceptions;
 
@@ -157,7 +159,9 @@
             {
                 try
                 {
-                    readSurfaceLines.Add(reader.ReadLine());
+                    var ringtoetsPipingSurfaceLine = reader.ReadLine();
+                    PruneConsecutiveDuplicateGeometryPoints(ringtoetsPipingSurfaceLine);
+                    readSurfaceLines.Add(ringtoetsPipingSurfaceLine);
                 }
                 catch (CriticalFileReadException e)
                 {
@@ -181,6 +185,31 @@
             };
         }
 
+        private void PruneConsecutiveDuplicateGeometryPoints(RingtoetsPipingSurfaceLine ringtoetsPipingSurfaceLine)
+        {
+            Point3D[] readPoints = ringtoetsPipingSurfaceLine.Points.ToArray();
+            var consecutiveDuplicatePointIndices = new List<int>();
+            Point3D previousPoint = null;
+            for (int j = 0; j < readPoints.Length; j++)
+            {
+                if (j != 0 && readPoints[j].Equals(previousPoint))
+                {
+                    consecutiveDuplicatePointIndices.Add(j);
+                    previousPoint = readPoints[j];
+                }
+                else
+                {
+                    previousPoint = readPoints[j];
+                }
+            }
+
+            if (consecutiveDuplicatePointIndices.Any())
+            {
+                log.WarnFormat("Dwarsdoorsnede {0} bevat aaneengesloten dubbele geometrie punten, welke zijn genegeerd.", ringtoetsPipingSurfaceLine.Name);
+                ringtoetsPipingSurfaceLine.SetGeometry(readPoints.Where((p, index) => !consecutiveDuplicatePointIndices.Contains(index)));
+            }
+        }
+
         private SurfaceLinesFileReadResult HandleCriticalError(string path, Exception e)
         {
             var message = string.Format(ApplicationResources.PipingSurfaceLinesCsvImporter_CriticalErrorReading_0_Cause_1_,
Index: Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/RingtoetsPipingSurfaceLineTest.cs
===================================================================
diff -u -ra950714ad9510756331d862aa35695fa0b2ed03b -r5462a7ee52b9491f269d489a094d359f4f02f270
--- Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/RingtoetsPipingSurfaceLineTest.cs	(.../RingtoetsPipingSurfaceLineTest.cs)	(revision a950714ad9510756331d862aa35695fa0b2ed03b)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/RingtoetsPipingSurfaceLineTest.cs	(.../RingtoetsPipingSurfaceLineTest.cs)	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -64,16 +64,52 @@
         }
 
         [Test]
+        public void SetGeometry_CollectionOfMultiplePoints_InitializeStartAndEndWorldPointsInitializePoints()
+        {
+            // Setup
+            var surfaceLine = new RingtoetsPipingSurfaceLine();
+
+            var sourceData = new[]
+            {
+                new Point3D
+                {
+                    X = 1.1, Y = 2.2, Z = 3.3
+                },
+                new Point3D
+                {
+                    X = 4.4, Y = 5.5, Z = 6.6
+                },
+                new Point3D
+                {
+                    X = 7.7, Y = 8.8, Z = 9.9
+                },
+                new Point3D
+                {
+                    X = 10.10, Y = 11.11, Z = 12.12
+                },
+            };
+
+            // Call
+            surfaceLine.SetGeometry(sourceData);
+
+            // Assert
+            Assert.AreNotSame(sourceData, surfaceLine.Points);
+            CollectionAssert.AreEqual(sourceData, surfaceLine.Points);
+            Assert.AreSame(sourceData[0], surfaceLine.StartingWorldPoint);
+            Assert.AreSame(sourceData[3], surfaceLine.EndingWorldPoint);
+        }
+
+        [Test]
         public void ProjectGeometryToLZ_EmptyCollection_ReturnEmptyCollection()
         {
             // Setup
             var surfaceLine = new RingtoetsPipingSurfaceLine();
 
             // Call
-            IEnumerable<Point2D> lzCoordiantes = surfaceLine.ProjectGeometryToLZ();
+            IEnumerable<Point2D> lzCoordinates = surfaceLine.ProjectGeometryToLZ();
 
             // Assert
-            CollectionAssert.IsEmpty(lzCoordiantes);
+            CollectionAssert.IsEmpty(lzCoordinates);
         }
 
         [Test]
@@ -86,10 +122,10 @@
 
 
             // Call
-            Point2D[] lzCoordiantes = surfaceLine.ProjectGeometryToLZ().ToArray();
+            Point2D[] lzCoordinates = surfaceLine.ProjectGeometryToLZ().ToArray();
 
             // Assert
-            CollectionAssert.AreEqual(new[]{ new Point2D { X = 0.0, Y = originalZ } }, lzCoordiantes);
+            CollectionAssert.AreEqual(new[]{ new Point2D { X = 0.0, Y = originalZ } }, lzCoordinates);
         }
 
         [Test]
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/FileUtilsTest.cs
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/FileUtilsTest.cs	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/FileUtilsTest.cs	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -0,0 +1,72 @@
+using System;
+using System.IO;
+
+using Core.Common.TestUtils;
+
+using NUnit.Framework;
+
+namespace Ringtoets.Piping.IO.Test
+{
+    [TestFixture]
+    public class FileUtilsTest
+    {
+        [Test]
+        public void ValidateFilePath_ValidPath_DoesNotThrowAnyExceptions()
+        {
+            // Setup
+            var path = TestHelper.GetTestDataPath(TestDataPath.Ringtoets.Piping.IO, "validFile.txt");
+
+            // Call
+            TestDelegate call = () => FileUtils.ValidateFilePath(path);
+
+            // Assert
+            Assert.DoesNotThrow(call);
+        }
+
+        [Test]
+        [TestCase(null)]
+        [TestCase("")]
+        [TestCase("   ")]
+        public void ValidateFilePath_InvalidEmptyPath_ThrowsArgumentException(string invalidPath)
+        {
+            // Call
+            TestDelegate call = () => FileUtils.ValidateFilePath(invalidPath);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentException>(call);
+            Assert.AreEqual("Bestandspad mag niet leeg of ongedefinieerd zijn.", exception.Message);
+        }
+
+        [Test]
+        public void ValidateFilePath_PathContainingInvalidFileCharacters_ThrowsArgumentException()
+        {
+            // Setup
+            var path = TestHelper.GetTestDataPath(TestDataPath.Ringtoets.Piping.IO, "validFile.txt");
+            var invalidFileNameChars = Path.GetInvalidFileNameChars();
+            var invalidPath = path.Replace('d', invalidFileNameChars[0]);
+
+            // Call
+            TestDelegate call = () => FileUtils.ValidateFilePath(invalidPath);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentException>(call);
+            var expectedMessage = String.Format("Bestandspad mag niet de volgende tekens bevatten: {0}",
+                                                string.Join(", ", invalidFileNameChars));
+            Assert.AreEqual(expectedMessage, exception.Message);
+        }
+
+        [Test]
+        public void ValidateFilePath_PathIsActuallyFolder_ThrowsArgumentException()
+        {
+            // Setup
+            var folderPath = TestHelper.GetTestDataPath(TestDataPath.Ringtoets.Piping.IO) + Path.DirectorySeparatorChar;
+
+            // Call
+            TestDelegate call = () => FileUtils.ValidateFilePath(folderPath);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentException>(call);
+            Assert.AreEqual("Bestandspad mag niet naar een map verwijzen.", exception.Message);
+        }
+    }
+}
\ No newline at end of file
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/PipingSurfaceLinesCsvReaderTest.cs
===================================================================
diff -u -ra950714ad9510756331d862aa35695fa0b2ed03b -r5462a7ee52b9491f269d489a094d359f4f02f270
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/PipingSurfaceLinesCsvReaderTest.cs	(.../PipingSurfaceLinesCsvReaderTest.cs)	(revision a950714ad9510756331d862aa35695fa0b2ed03b)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/PipingSurfaceLinesCsvReaderTest.cs	(.../PipingSurfaceLinesCsvReaderTest.cs)	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -16,7 +16,7 @@
     [TestFixture]
     public class PipingSurfaceLinesCsvReaderTest
     {
-        private readonly string testDataPath = TestHelper.GetTestDataPath(TestDataPath.Ringtoets.Piping.IO, "PipingSurfaceLinesCsvReader" + Path.DirectorySeparatorChar);
+        private readonly string testDataPath = TestHelper.GetTestDataPath(TestDataPath.Ringtoets.Piping.IO, "SurfaceLines" + Path.DirectorySeparatorChar);
 
         [Test]
         [TestCase("")]
@@ -240,7 +240,7 @@
         {
             // Setup
             // File: First 3 points are identical
-            string path = Path.Combine(testDataPath, "ValidSurfaceLine_HasDuplicatePoints.csv");
+            string path = Path.Combine(testDataPath, "ValidSurfaceLine_HasConsecutiveDuplicatePoints.csv");
 
             // Precondition:
             Assert.IsTrue(File.Exists(path));
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/Ringtoets.Piping.IO.Test.csproj
===================================================================
diff -u -ra950714ad9510756331d862aa35695fa0b2ed03b -r5462a7ee52b9491f269d489a094d359f4f02f270
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/Ringtoets.Piping.IO.Test.csproj	(.../Ringtoets.Piping.IO.Test.csproj)	(revision a950714ad9510756331d862aa35695fa0b2ed03b)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/Ringtoets.Piping.IO.Test.csproj	(.../Ringtoets.Piping.IO.Test.csproj)	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -52,6 +52,7 @@
     <Compile Include="Exceptions\CriticalFileReadExceptionTest.cs" />
     <Compile Include="Exceptions\LineParseExceptionTest.cs" />
     <Compile Include="Exceptions\PipingSoilProfileReadExceptionTest.cs" />
+    <Compile Include="FileUtilsTest.cs" />
     <Compile Include="PipingSoilLayerReaderTest.cs" />
     <Compile Include="PipingSoilProfileReaderTest.cs" />
     <Compile Include="PipingSurfaceLinesCsvReaderTest.cs" />
Fisheye: Tag 5462a7ee52b9491f269d489a094d359f4f02f270 refers to a dead (removed) revision in file `Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/PipingSurfaceLinesCsvReader/InvalidHeader_LacksX1.csv'.
Fisheye: No comparison available.  Pass `N' to diff?
Fisheye: Tag 5462a7ee52b9491f269d489a094d359f4f02f270 refers to a dead (removed) revision in file `Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/PipingSurfaceLinesCsvReader/InvalidHeader_LacksY1.csv'.
Fisheye: No comparison available.  Pass `N' to diff?
Fisheye: Tag 5462a7ee52b9491f269d489a094d359f4f02f270 refers to a dead (removed) revision in file `Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/PipingSurfaceLinesCsvReader/InvalidHeader_LacksZ1.csv'.
Fisheye: No comparison available.  Pass `N' to diff?
Fisheye: Tag 5462a7ee52b9491f269d489a094d359f4f02f270 refers to a dead (removed) revision in file `Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/PipingSurfaceLinesCsvReader/InvalidHeader_UnsupportedId.csv'.
Fisheye: No comparison available.  Pass `N' to diff?
Fisheye: Tag 5462a7ee52b9491f269d489a094d359f4f02f270 refers to a dead (removed) revision in file `Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/PipingSurfaceLinesCsvReader/InvalidRow_IncorrectValueSeparator.csv'.
Fisheye: No comparison available.  Pass `N' to diff?
Fisheye: Tag 5462a7ee52b9491f269d489a094d359f4f02f270 refers to a dead (removed) revision in file `Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/PipingSurfaceLinesCsvReader/InvalidRow_LacksCoordinateValues.csv'.
Fisheye: No comparison available.  Pass `N' to diff?
Fisheye: Tag 5462a7ee52b9491f269d489a094d359f4f02f270 refers to a dead (removed) revision in file `Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/PipingSurfaceLinesCsvReader/InvalidRow_NotMonotinocallyIncreasingLCoordinates.csv'.
Fisheye: No comparison available.  Pass `N' to diff?
Fisheye: Tag 5462a7ee52b9491f269d489a094d359f4f02f270 refers to a dead (removed) revision in file `Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/PipingSurfaceLinesCsvReader/InvalidRow_XNotAValidNumber.csv'.
Fisheye: No comparison available.  Pass `N' to diff?
Fisheye: Tag 5462a7ee52b9491f269d489a094d359f4f02f270 refers to a dead (removed) revision in file `Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/PipingSurfaceLinesCsvReader/InvalidRow_XOverflowingNumber.csv'.
Fisheye: No comparison available.  Pass `N' to diff?
Fisheye: Tag 5462a7ee52b9491f269d489a094d359f4f02f270 refers to a dead (removed) revision in file `Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/PipingSurfaceLinesCsvReader/InvalidRow_XUnderflowingNumber.csv'.
Fisheye: No comparison available.  Pass `N' to diff?
Fisheye: Tag 5462a7ee52b9491f269d489a094d359f4f02f270 refers to a dead (removed) revision in file `Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/PipingSurfaceLinesCsvReader/InvalidRow_YNotAValidNumber.csv'.
Fisheye: No comparison available.  Pass `N' to diff?
Fisheye: Tag 5462a7ee52b9491f269d489a094d359f4f02f270 refers to a dead (removed) revision in file `Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/PipingSurfaceLinesCsvReader/InvalidRow_YOverflowingNumber.csv'.
Fisheye: No comparison available.  Pass `N' to diff?
Fisheye: Tag 5462a7ee52b9491f269d489a094d359f4f02f270 refers to a dead (removed) revision in file `Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/PipingSurfaceLinesCsvReader/InvalidRow_YUnderflowingNumber.csv'.
Fisheye: No comparison available.  Pass `N' to diff?
Fisheye: Tag 5462a7ee52b9491f269d489a094d359f4f02f270 refers to a dead (removed) revision in file `Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/PipingSurfaceLinesCsvReader/InvalidRow_ZNotAValidNumber.csv'.
Fisheye: No comparison available.  Pass `N' to diff?
Fisheye: Tag 5462a7ee52b9491f269d489a094d359f4f02f270 refers to a dead (removed) revision in file `Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/PipingSurfaceLinesCsvReader/InvalidRow_ZOverflowingNumber.csv'.
Fisheye: No comparison available.  Pass `N' to diff?
Fisheye: Tag 5462a7ee52b9491f269d489a094d359f4f02f270 refers to a dead (removed) revision in file `Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/PipingSurfaceLinesCsvReader/InvalidRow_ZUnderflowingNumber.csv'.
Fisheye: No comparison available.  Pass `N' to diff?
Fisheye: Tag 5462a7ee52b9491f269d489a094d359f4f02f270 refers to a dead (removed) revision in file `Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/PipingSurfaceLinesCsvReader/TwoInvalidRows_IncompleteCoordinateTriplets.csv'.
Fisheye: No comparison available.  Pass `N' to diff?
Fisheye: Tag 5462a7ee52b9491f269d489a094d359f4f02f270 refers to a dead (removed) revision in file `Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/PipingSurfaceLinesCsvReader/TwoInvalidRows_LacksId.csv'.
Fisheye: No comparison available.  Pass `N' to diff?
Fisheye: Tag 5462a7ee52b9491f269d489a094d359f4f02f270 refers to a dead (removed) revision in file `Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/PipingSurfaceLinesCsvReader/TwoValidAndOneInvalidNumberRowSurfaceLines.csv'.
Fisheye: No comparison available.  Pass `N' to diff?
Fisheye: Tag 5462a7ee52b9491f269d489a094d359f4f02f270 refers to a dead (removed) revision in file `Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/PipingSurfaceLinesCsvReader/TwoValidSurfaceLines.csv'.
Fisheye: No comparison available.  Pass `N' to diff?
Fisheye: Tag 5462a7ee52b9491f269d489a094d359f4f02f270 refers to a dead (removed) revision in file `Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/PipingSurfaceLinesCsvReader/ValidFileWithoutSurfaceLines.csv'.
Fisheye: No comparison available.  Pass `N' to diff?
Fisheye: Tag 5462a7ee52b9491f269d489a094d359f4f02f270 refers to a dead (removed) revision in file `Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/PipingSurfaceLinesCsvReader/ValidSurfaceLine_HasDuplicatePoints.csv'.
Fisheye: No comparison available.  Pass `N' to diff?
Fisheye: Tag 5462a7ee52b9491f269d489a094d359f4f02f270 refers to a dead (removed) revision in file `Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/PipingSurfaceLinesCsvReader/empty.csv'.
Fisheye: No comparison available.  Pass `N' to diff?
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidHeader_LacksX1.csv
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidHeader_LacksX1.csv	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidHeader_LacksX1.csv	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -0,0 +1,3 @@
+Profielnaam;Y1;Z1;...;Xn;Yn;Zn
+Rotterdam1;94263.0026213;427776.654093;-1.02;94275.9126686;427811.080886;-1.04;94284.0663827;427831.918156;1.25;94294.9380015;427858.191234;1.45;94305.3566362;427889.900123;1.65;94315.0957947;427913.908281;1.66;94325.0614453;427941.766804;1.55;94331.1767309;427960.112661;1.44
+ArtificalLocal;2.3;0;1.0;5.7;0;2.0;4.4;0;1.1
\ No newline at end of file
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidHeader_LacksY1.csv
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidHeader_LacksY1.csv	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidHeader_LacksY1.csv	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -0,0 +1,3 @@
+Profielnaam;X1;Z1;...;Xn;Yn;Zn
+Rotterdam1;94263.0026213;427776.654093;-1.02;94275.9126686;427811.080886;-1.04;94284.0663827;427831.918156;1.25;94294.9380015;427858.191234;1.45;94305.3566362;427889.900123;1.65;94315.0957947;427913.908281;1.66;94325.0614453;427941.766804;1.55;94331.1767309;427960.112661;1.44
+ArtificalLocal;2.3;0;1.0;5.7;0;2.0;4.4;0;1.1
\ No newline at end of file
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidHeader_LacksZ1.csv
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidHeader_LacksZ1.csv	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidHeader_LacksZ1.csv	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -0,0 +1,3 @@
+Profielnaam;X1;Y1;...;Xn;Yn;Zn
+Rotterdam1;94263.0026213;427776.654093;-1.02;94275.9126686;427811.080886;-1.04;94284.0663827;427831.918156;1.25;94294.9380015;427858.191234;1.45;94305.3566362;427889.900123;1.65;94315.0957947;427913.908281;1.66;94325.0614453;427941.766804;1.55;94331.1767309;427960.112661;1.44
+ArtificalLocal;2.3;0;1.0;5.7;0;2.0;4.4;0;1.1
\ No newline at end of file
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidHeader_UnsupportedId.csv
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidHeader_UnsupportedId.csv	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidHeader_UnsupportedId.csv	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -0,0 +1,3 @@
+"I'm not a valid id";X1;Y1;Z1;...;Xn;Yn;Zn
+Rotterdam1;94263.0026213;427776.654093;-1.02;94275.9126686;427811.080886;-1.04;94284.0663827;427831.918156;1.25;94294.9380015;427858.191234;1.45;94305.3566362;427889.900123;1.65;94315.0957947;427913.908281;1.66;94325.0614453;427941.766804;1.55;94331.1767309;427960.112661;1.44
+ArtificalLocal;2.3;0;1.0;5.7;0;2.0;4.4;0;1.1
\ No newline at end of file
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_IncorrectValueSeparator.csv
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_IncorrectValueSeparator.csv	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_IncorrectValueSeparator.csv	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -0,0 +1,2 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+Rotterdam1,94263.0026213,427776.654093,-1.02,94275.9126686,427811.080886,-1.04,94284.0663827,427831.918156,1.25,94294.9380015,427858.191234,1.45,94305.3566362,427889.900123,1.65,94315.0957947,427913.908281,1.66,94325.0614453,427941.766804,1.55,94331.1767309,427960.112661,1.44
\ No newline at end of file
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_LacksCoordinateValues.csv
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_LacksCoordinateValues.csv	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_LacksCoordinateValues.csv	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -0,0 +1,2 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+InvalidRow1
\ No newline at end of file
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_NotMonotinocallyIncreasingLCoordinates.csv
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_NotMonotinocallyIncreasingLCoordinates.csv	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_NotMonotinocallyIncreasingLCoordinates.csv	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -0,0 +1,2 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+ArtificalLocal;1.0;1.0;1.0;3.0;3.0;3.0;2.0;2.0;2.0;4.0;4.0;4.0
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_XNotAValidNumber.csv
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_XNotAValidNumber.csv	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_XNotAValidNumber.csv	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -0,0 +1,2 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+InvalidSurfaceLine;This is not a number;2.2;3.3;4.4;5.5;6.6
\ No newline at end of file
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_XOverflowingNumber.csv
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_XOverflowingNumber.csv	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_XOverflowingNumber.csv	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -0,0 +1,2 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+InvalidSurfaceLine;999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999;2.2;3.3;4.4;5.5;6.6
\ No newline at end of file
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_XUnderflowingNumber.csv
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_XUnderflowingNumber.csv	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_XUnderflowingNumber.csv	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -0,0 +1,2 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+InvalidSurfaceLine;1.1;2.2;3.3;-999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999;5.5;6.6
\ No newline at end of file
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_YNotAValidNumber.csv
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_YNotAValidNumber.csv	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_YNotAValidNumber.csv	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -0,0 +1,2 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+InvalidSurfaceLine;1.1;definitely not a number;3.3;4.4;5.5;6.6
\ No newline at end of file
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_YOverflowingNumber.csv
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_YOverflowingNumber.csv	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_YOverflowingNumber.csv	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -0,0 +1,2 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+InvalidSurfaceLine;1.1;2.2;3.3;4.4;999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999;6.6
\ No newline at end of file
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_YUnderflowingNumber.csv
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_YUnderflowingNumber.csv	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_YUnderflowingNumber.csv	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -0,0 +1,2 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+InvalidSurfaceLine;1.1;-999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999;3.3;4.4;5.5;6.6
\ No newline at end of file
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_ZNotAValidNumber.csv
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_ZNotAValidNumber.csv	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_ZNotAValidNumber.csv	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -0,0 +1,2 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+InvalidSurfaceLine;1.1;2.2;three point three;4.4;5.5;6.6
\ No newline at end of file
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_ZOverflowingNumber.csv
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_ZOverflowingNumber.csv	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_ZOverflowingNumber.csv	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -0,0 +1,2 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+InvalidSurfaceLine;1.1;2.2;3.3;4.4;5.5;999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999
\ No newline at end of file
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_ZUnderflowingNumber.csv
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_ZUnderflowingNumber.csv	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/InvalidRow_ZUnderflowingNumber.csv	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -0,0 +1,2 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+InvalidSurfaceLine;1.1;2.2;-999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999;4.4;5.5;6.6
\ No newline at end of file
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/TwoInvalidRows_IncompleteCoordinateTriplets.csv
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/TwoInvalidRows_IncompleteCoordinateTriplets.csv	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/TwoInvalidRows_IncompleteCoordinateTriplets.csv	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -0,0 +1,3 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+LacksOneCoordinate;94263.0026213;427776.654093;-1.02;94275.9126686;427811.080886;-1.04;94284.0663827;1.25;94294.9380015;427858.191234;1.45;94305.3566362;427889.900123;1.65;94315.0957947;427913.908281;1.66;94325.0614453;427941.766804;1.55;94331.1767309;427960.112661;1.44
+LacksTwoCoordinates;2.3;0;1.0;2.0;4.4;0;1.1
\ No newline at end of file
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/TwoInvalidRows_LacksId.csv
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/TwoInvalidRows_LacksId.csv	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/TwoInvalidRows_LacksId.csv	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -0,0 +1,3 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+;94263.0026213;427776.654093;-1.02;94275.9126686;427811.080886;-1.04;94284.0663827;427831.918156;1.25;94294.9380015;427858.191234;1.45;94305.3566362;427889.900123;1.65;94315.0957947;427913.908281;1.66;94325.0614453;427941.766804;1.55;94331.1767309;427960.112661;1.44
+   ;2.3;0;1.0;5.7;0;2.0;4.4;0;1.1
\ No newline at end of file
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/TwoValidAndOneInvalidNumberRowSurfaceLines.csv
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/TwoValidAndOneInvalidNumberRowSurfaceLines.csv	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/TwoValidAndOneInvalidNumberRowSurfaceLines.csv	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -0,0 +1,4 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+Rotterdam1;94263.0026213;427776.654093;-1.02;94275.9126686;427811.080886;-1.04;94284.0663827;427831.918156;1.25;94294.9380015;427858.191234;1.45;94305.3566362;427889.900123;1.65;94315.0957947;427913.908281;1.66;94325.0614453;427941.766804;1.55;94331.1767309;427960.112661;1.44
+InvalidRow;1.1;Really not a number;3.3;4.4;5.5;6.6
+ArtificalLocal;2.3;0;1.0;5.7;0;2.0;9.9;0;1.1
\ No newline at end of file
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/TwoValidSurfaceLines.csv
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/TwoValidSurfaceLines.csv	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/TwoValidSurfaceLines.csv	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -0,0 +1,3 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn;;;;;;;;;;;;;;;;;
+Rotterdam1;94263.0026213;427776.654093;-1.02;94275.9126686;427811.080886;-1.04;94284.0663827;427831.918156;1.25;94294.9380015;427858.191234;1.45;94305.3566362;427889.900123;1.65;94315.0957947;427913.908281;1.66;94325.0614453;427941.766804;1.55;94331.1767309;427960.112661;1.44
+ArtificalLocal;2.3;0;1.0;4.4;0;2.0;5.7;0;1.1;;;;;;;;;;;;;;;
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/ValidFileWithoutSurfaceLines.csv
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/ValidFileWithoutSurfaceLines.csv	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/ValidFileWithoutSurfaceLines.csv	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -0,0 +1,2 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/ValidSurfaceLine_HasConsecutiveDuplicatePoints.csv
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/ValidSurfaceLine_HasConsecutiveDuplicatePoints.csv	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/ValidSurfaceLine_HasConsecutiveDuplicatePoints.csv	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -0,0 +1,2 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+Rotterdam1;94263.0026213;427776.654093;-1.02;94263.0026213;427776.654093;-1.02;94263.0026213;427776.654093;-1.02;94275.9126686;427811.080886;-1.04;94284.0663827;427831.918156;1.25;94294.9380015;427858.191234;1.45;94305.3566362;427889.900123;1.65;94315.0957947;427913.908281;1.66;94325.0614453;427941.766804;1.55;94331.1767309;427960.112661;1.44
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/ValidSurfaceLine_HasDuplicatePoints.csv
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/ValidSurfaceLine_HasDuplicatePoints.csv	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/ValidSurfaceLine_HasDuplicatePoints.csv	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -0,0 +1,2 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+Rotterdam1;94263.0026213;427776.654093;-1.02;94275.9126686;427811.080886;-1.04;94263.0026213;427776.654093;-1.02;94284.0663827;427831.918156;1.25;94263.0026213;427776.654093;-1.02;94294.9380015;427858.191234;1.45;94305.3566362;427889.900123;1.65;94263.0026213;427776.654093;-1.02;94315.0957947;427913.908281;1.66;94325.0614453;427941.766804;1.55;94331.1767309;427960.112661;1.44
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/empty.csv
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/empty.csv	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/SurfaceLines/empty.csv	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -0,0 +1 @@

\ No newline at end of file
Index: Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/FileImporter/PipingSurfaceLineCsvImporterTest.cs
===================================================================
diff -u -ra950714ad9510756331d862aa35695fa0b2ed03b -r5462a7ee52b9491f269d489a094d359f4f02f270
--- Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/FileImporter/PipingSurfaceLineCsvImporterTest.cs	(.../PipingSurfaceLineCsvImporterTest.cs)	(revision a950714ad9510756331d862aa35695fa0b2ed03b)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/FileImporter/PipingSurfaceLineCsvImporterTest.cs	(.../PipingSurfaceLineCsvImporterTest.cs)	(revision 5462a7ee52b9491f269d489a094d359f4f02f270)
@@ -22,7 +22,7 @@
     [TestFixture]
     public class PipingSurfaceLineCsvImporterTest
     {
-        private readonly string testDataPath = TestHelper.GetTestDataPath(TestDataPath.Ringtoets.Piping.IO, "PipingSurfaceLinesCsvReader");
+        private readonly string testDataPath = TestHelper.GetTestDataPath(TestDataPath.Ringtoets.Piping.IO, "SurfaceLines");
 
         [Test]
         public void DefaultConstructor_ExpectedValues()
@@ -152,6 +152,55 @@
         }
 
         [Test]
+        public void ImportItem_ImportingToValidTargetWithValidFileWithConsecutiveDuplicatePoints_ImportSurfaceLineWithDuplicatesRemovedToCollection()
+        {
+            // Setup
+            var twovalidsurfacelinesCsv = "ValidSurfaceLine_HasConsecutiveDuplicatePoints.csv";
+            string validFilePath = Path.Combine(testDataPath, twovalidsurfacelinesCsv);
+
+            var mocks = new MockRepository();
+            var observer = mocks.StrictMock<IObserver>();
+            observer.Expect(o => o.UpdateObserver());
+            mocks.ReplayAll();
+
+            var observableSurfaceLinesList = new ObservableList<RingtoetsPipingSurfaceLine>();
+            observableSurfaceLinesList.Attach(observer);
+
+            var importer = new PipingSurfaceLinesCsvImporter();
+
+            // Precondition
+            CollectionAssert.IsEmpty(observableSurfaceLinesList);
+            Assert.IsTrue(importer.CanImportOn(observableSurfaceLinesList));
+            Assert.IsTrue(File.Exists(validFilePath));
+
+            // Call
+            object importedItem = null;
+            Action call = () => importedItem = importer.ImportItem(validFilePath, observableSurfaceLinesList);
+
+            // Assert
+            TestHelper.AssertLogMessageIsGenerated(call, "Dwarsdoorsnede Rotterdam1 bevat aaneengesloten dubbele geometrie punten, welke zijn genegeerd.", 1);
+            Assert.AreSame(observableSurfaceLinesList, importedItem);
+            var importTargetArray = observableSurfaceLinesList.ToArray();
+            Assert.AreEqual(1, importTargetArray.Length);
+
+            // Sample some of the imported data:
+            var firstSurfaceLine = importTargetArray[0];
+            Assert.AreEqual("Rotterdam1", firstSurfaceLine.Name);
+            var geometryPoints = firstSurfaceLine.Points.ToArray();
+            Assert.AreEqual(8, geometryPoints.Length);
+            Assert.AreNotEqual(geometryPoints[0].X, geometryPoints[1].X,
+                               "Originally duplicate points at the start have been removed.");
+            Assert.AreNotEqual(geometryPoints[0].X, geometryPoints[2].X,
+                               "Originally duplicate points at the start have been removed.");
+            Assert.AreEqual(427776.654093, firstSurfaceLine.StartingWorldPoint.Y);
+            CollectionAssert.AllItemsAreUnique(geometryPoints);
+
+            Assert.IsTrue(FileHelper.CanOpenFileForWrite(validFilePath));
+
+            mocks.VerifyAll();
+        }
+
+        [Test]
         public void ImportItem_ImportingToValidTargetWithValidFileWhileShouldCancelTrue_CancelImportAndLog()
         {
             // Setup
@@ -408,5 +457,46 @@
                 "Expect 1 call for each surfaceline (3 in total) +1 for 0/N progress, and 1 for putting data in model.");
             mocks.VerifyAll();
         }
+
+        [Test]
+        public void ImportItem_ImportingToValidTargetWithInValidFileWithDuplicatePointsCausingRecline_SkipInvalidRowAndLog()
+        {
+            // Setup
+            var twovalidsurfacelinesCsv = "ValidSurfaceLine_HasDuplicatePoints.csv";
+            string path = Path.Combine(testDataPath, twovalidsurfacelinesCsv);
+
+            var mocks = new MockRepository();
+            var observer = mocks.StrictMock<IObserver>();
+            observer.Expect(o => o.UpdateObserver());
+            mocks.ReplayAll();
+
+            var observableSurfaceLinesList = new ObservableList<RingtoetsPipingSurfaceLine>();
+            observableSurfaceLinesList.Attach(observer);
+
+            var importer = new PipingSurfaceLinesCsvImporter();
+
+            // Precondition
+            CollectionAssert.IsEmpty(observableSurfaceLinesList);
+            Assert.IsTrue(importer.CanImportOn(observableSurfaceLinesList));
+            Assert.IsTrue(File.Exists(path));
+
+            // Call
+            object importedItem = null;
+            Action call = () => importedItem = importer.ImportItem(path, observableSurfaceLinesList);
+
+            // Assert
+            var internalErrorMessage = String.Format(WtiIOResources.PipingSurfaceLinesCsvReader_ReadLine_File_0_Line_1_Has_reclining_geometry,
+                                                     path, 2);
+            var expectedLogMessage = string.Format(ApplicationResources.PipingSurfaceLinesCsvImporter_ReadPipingSurfaceLines_ParseError_File_0_SurfaceLinesNumber_1_Message_2_,
+                                                   path, 1, internalErrorMessage);
+            TestHelper.AssertLogMessageIsGenerated(call, expectedLogMessage, 1);
+            Assert.AreSame(observableSurfaceLinesList, importedItem);
+            var importTargetArray = observableSurfaceLinesList.ToArray();
+            Assert.AreEqual(0, importTargetArray.Length);
+
+            Assert.IsTrue(FileHelper.CanOpenFileForWrite(path));
+
+            mocks.VerifyAll();
+        }
     }
 }
\ No newline at end of file