Index: Application/Ringtoets/src/Application.Ringtoets.Storage/Create/GrassCoverErosionOutwards/GrassCoverErosionOutwardsFailureMechanismCreateExtensions.cs
===================================================================
diff -u -r070c0400906eb4cfbd4fdcfbf1e49d4dfeec7856 -r6961604966c692884a617414010e131915732469
--- Application/Ringtoets/src/Application.Ringtoets.Storage/Create/GrassCoverErosionOutwards/GrassCoverErosionOutwardsFailureMechanismCreateExtensions.cs	(.../GrassCoverErosionOutwardsFailureMechanismCreateExtensions.cs)	(revision 070c0400906eb4cfbd4fdcfbf1e49d4dfeec7856)
+++ Application/Ringtoets/src/Application.Ringtoets.Storage/Create/GrassCoverErosionOutwards/GrassCoverErosionOutwardsFailureMechanismCreateExtensions.cs	(.../GrassCoverErosionOutwardsFailureMechanismCreateExtensions.cs)	(revision 6961604966c692884a617414010e131915732469)
@@ -22,10 +22,8 @@
 using System;
 using System.Collections.Generic;
 using Application.Ringtoets.Storage.DbContext;
-using Core.Common.Base;
 using Core.Common.Util.Extensions;
 using Ringtoets.Common.Data.DikeProfiles;
-using Ringtoets.Common.Data.Hydraulics;
 using Ringtoets.GrassCoverErosionOutwards.Data;
 
 namespace Application.Ringtoets.Storage.Create.GrassCoverErosionOutwards
Index: Application/Ringtoets/src/Application.Ringtoets.Storage/Read/FailureMechanismEntityReadExtensions.cs
===================================================================
diff -u -r070c0400906eb4cfbd4fdcfbf1e49d4dfeec7856 -r6961604966c692884a617414010e131915732469
--- Application/Ringtoets/src/Application.Ringtoets.Storage/Read/FailureMechanismEntityReadExtensions.cs	(.../FailureMechanismEntityReadExtensions.cs)	(revision 070c0400906eb4cfbd4fdcfbf1e49d4dfeec7856)
+++ Application/Ringtoets/src/Application.Ringtoets.Storage/Read/FailureMechanismEntityReadExtensions.cs	(.../FailureMechanismEntityReadExtensions.cs)	(revision 6961604966c692884a617414010e131915732469)
@@ -41,7 +41,6 @@
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Common.Data.DikeProfiles;
 using Ringtoets.Common.Data.FailureMechanism;
-using Ringtoets.Common.Data.Hydraulics;
 using Ringtoets.DuneErosion.Data;
 using Ringtoets.GrassCoverErosionInwards.Data;
 using Ringtoets.GrassCoverErosionOutwards.Data;
Index: Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Create/GrassCoverErosionOutwards/GrassCoverErosionOutwardsFailureMechanismCreateExtensionsTest.cs
===================================================================
diff -u -r49d7201ca48c40bac6e9fe5832d531d11b8c16fd -r6961604966c692884a617414010e131915732469
--- Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Create/GrassCoverErosionOutwards/GrassCoverErosionOutwardsFailureMechanismCreateExtensionsTest.cs	(.../GrassCoverErosionOutwardsFailureMechanismCreateExtensionsTest.cs)	(revision 49d7201ca48c40bac6e9fe5832d531d11b8c16fd)
+++ Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Create/GrassCoverErosionOutwards/GrassCoverErosionOutwardsFailureMechanismCreateExtensionsTest.cs	(.../GrassCoverErosionOutwardsFailureMechanismCreateExtensionsTest.cs)	(revision 6961604966c692884a617414010e131915732469)
@@ -75,7 +75,7 @@
                 },
                 GeneralInput =
                 {
-                    N = new Random().NextRoundedDouble(1, 20)
+                    N = new Random(39).NextRoundedDouble(1, 20)
                 }
             };
             var registry = new PersistenceRegistry();
@@ -255,19 +255,7 @@
             GrassCoverErosionOutwardsFailureMechanismMetaEntity metaEntity =
                 entity.GrassCoverErosionOutwardsFailureMechanismMetaEntities.Single();
 
-            AssertHydraulicLocationCalculationCollectionEntity(failureMechanism.WaveHeightCalculationsForMechanismSpecificLowerLimitNorm,
-                                                               metaEntity.HydraulicLocationCalculationCollectionEntity);
-            AssertHydraulicLocationCalculationCollectionEntity(failureMechanism.WaveHeightCalculationsForMechanismSpecificSignalingNorm,
-                                                               metaEntity.HydraulicLocationCalculationCollectionEntity1);
-            AssertHydraulicLocationCalculationCollectionEntity(failureMechanism.WaveHeightCalculationsForMechanismSpecificSignalingNorm,
-                                                               metaEntity.HydraulicLocationCalculationCollectionEntity2);
-
-            AssertHydraulicLocationCalculationCollectionEntity(failureMechanism.WaterLevelCalculationsForMechanismSpecificLowerLimitNorm,
-                                                               metaEntity.HydraulicLocationCalculationCollectionEntity3);
-            AssertHydraulicLocationCalculationCollectionEntity(failureMechanism.WaterLevelCalculationsForMechanismSpecificSignalingNorm,
-                                                               metaEntity.HydraulicLocationCalculationCollectionEntity4);
-            AssertHydraulicLocationCalculationCollectionEntity(failureMechanism.WaterLevelCalculationsForMechanismSpecificFactorizedSignalingNorm,
-                                                               metaEntity.HydraulicLocationCalculationCollectionEntity5);
+            AssertHydraulicLocationCalculationCollectionEntities(failureMechanism, metaEntity);
         }
 
         [Test]
@@ -292,19 +280,25 @@
             GrassCoverErosionOutwardsFailureMechanismMetaEntity metaEntity =
                 entity.GrassCoverErosionOutwardsFailureMechanismMetaEntities.Single();
 
-            AssertHydraulicLocationCalculationCollectionEntity(failureMechanism.WaveHeightCalculationsForMechanismSpecificLowerLimitNorm,
-                                                               metaEntity.HydraulicLocationCalculationCollectionEntity);
-            AssertHydraulicLocationCalculationCollectionEntity(failureMechanism.WaveHeightCalculationsForMechanismSpecificSignalingNorm,
-                                                               metaEntity.HydraulicLocationCalculationCollectionEntity1);
-            AssertHydraulicLocationCalculationCollectionEntity(failureMechanism.WaveHeightCalculationsForMechanismSpecificFactorizedSignalingNorm,
-                                                               metaEntity.HydraulicLocationCalculationCollectionEntity2);
+            AssertHydraulicLocationCalculationCollectionEntities(failureMechanism, metaEntity);
+        }
 
-            AssertHydraulicLocationCalculationCollectionEntity(failureMechanism.WaterLevelCalculationsForMechanismSpecificLowerLimitNorm,
-                                                               metaEntity.HydraulicLocationCalculationCollectionEntity3);
-            AssertHydraulicLocationCalculationCollectionEntity(failureMechanism.WaterLevelCalculationsForMechanismSpecificSignalingNorm,
-                                                               metaEntity.HydraulicLocationCalculationCollectionEntity4);
-            AssertHydraulicLocationCalculationCollectionEntity(failureMechanism.WaterLevelCalculationsForMechanismSpecificFactorizedSignalingNorm,
-                                                               metaEntity.HydraulicLocationCalculationCollectionEntity5);
+        private static void AssertHydraulicLocationCalculationCollectionEntities(GrassCoverErosionOutwardsFailureMechanism expectedFailureMechanism,
+                                                                                 GrassCoverErosionOutwardsFailureMechanismMetaEntity actualEntity)
+        {
+            AssertHydraulicLocationCalculationCollectionEntity(expectedFailureMechanism.WaveHeightCalculationsForMechanismSpecificLowerLimitNorm,
+                                                               actualEntity.HydraulicLocationCalculationCollectionEntity);
+            AssertHydraulicLocationCalculationCollectionEntity(expectedFailureMechanism.WaveHeightCalculationsForMechanismSpecificSignalingNorm,
+                                                               actualEntity.HydraulicLocationCalculationCollectionEntity1);
+            AssertHydraulicLocationCalculationCollectionEntity(expectedFailureMechanism.WaveHeightCalculationsForMechanismSpecificFactorizedSignalingNorm,
+                                                               actualEntity.HydraulicLocationCalculationCollectionEntity2);
+
+            AssertHydraulicLocationCalculationCollectionEntity(expectedFailureMechanism.WaterLevelCalculationsForMechanismSpecificLowerLimitNorm,
+                                                               actualEntity.HydraulicLocationCalculationCollectionEntity3);
+            AssertHydraulicLocationCalculationCollectionEntity(expectedFailureMechanism.WaterLevelCalculationsForMechanismSpecificSignalingNorm,
+                                                               actualEntity.HydraulicLocationCalculationCollectionEntity4);
+            AssertHydraulicLocationCalculationCollectionEntity(expectedFailureMechanism.WaterLevelCalculationsForMechanismSpecificFactorizedSignalingNorm,
+                                                               actualEntity.HydraulicLocationCalculationCollectionEntity5);
         }
 
         private static void SetHydraulicBoundaryLocationCalculationInputsOfFailureMechanism(GrassCoverErosionOutwardsFailureMechanism failureMechanism)