Index: Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Service/GrassCoverErosionOutwardsWaveConditionsCalculationActivity.cs
===================================================================
diff -u -r85e95a2b6e8fd7a873ba166ddfba608f2466a40c -r50ecb5a95c088a636ec38ce3c5f2fc8addcd67e3
--- Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Service/GrassCoverErosionOutwardsWaveConditionsCalculationActivity.cs	(.../GrassCoverErosionOutwardsWaveConditionsCalculationActivity.cs)	(revision 85e95a2b6e8fd7a873ba166ddfba608f2466a40c)
+++ Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Service/GrassCoverErosionOutwardsWaveConditionsCalculationActivity.cs	(.../GrassCoverErosionOutwardsWaveConditionsCalculationActivity.cs)	(revision 50ecb5a95c088a636ec38ce3c5f2fc8addcd67e3)
@@ -21,11 +21,17 @@
 
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using Core.Common.Base.Service;
+using log4net;
 using Ringtoets.Common.Data.AssessmentSection;
+using Ringtoets.Common.Service;
 using Ringtoets.GrassCoverErosionOutwards.Data;
+using Ringtoets.GrassCoverErosionOutwards.Service.Properties;
 using Ringtoets.HydraRing.Calculation.Activities;
 using Ringtoets.Revetment.Data;
+using Ringtoets.Revetment.Service;
+using RingtoetsCommonServiceResources = Ringtoets.Common.Service.Properties.Resources;
 
 namespace Ringtoets.GrassCoverErosionOutwards.Service
 {
@@ -34,6 +40,8 @@
     /// </summary>
     public class GrassCoverErosionOutwardsWaveConditionsCalculationActivity : HydraRingActivity<List<WaveConditionsOutput>>
     {
+        private static readonly ILog log = LogManager.GetLogger(typeof(GrassCoverErosionOutwardsWaveConditionsCalculationActivity));
+
         private readonly GrassCoverErosionOutwardsWaveConditionsCalculation calculation;
         private readonly string hlcdDirectory;
         private readonly GrassCoverErosionOutwardsFailureMechanism failureMechanism;
@@ -79,12 +87,65 @@
 
         protected override void OnRun()
         {
-            throw new System.NotImplementedException();
+            PerformRun(() => true,
+                      () => GrassCoverErosionOutwardsDataSynchronizationService.ClearWaveConditionsCalculationOutput(calculation),
+                      () =>
+                      {
+                          log.Info(string.Format(RingtoetsCommonServiceResources.Calculation_Subject_0_started_Time_1_,
+                                                 calculation.Name,
+                                                 DateTimeService.CurrentTimeAsString));
+
+                          List<WaveConditionsOutput> outputs = new List<WaveConditionsOutput>();
+
+                          var a = failureMechanism.GeneralInput.A;
+                          var b = failureMechanism.GeneralInput.B;
+                          var c = failureMechanism.GeneralInput.C;
+                          var norm = assessmentSection.FailureMechanismContribution.Norm;
+
+                          foreach (var waterLevel in calculation.InputParameters.WaterLevels)
+                          {
+                              log.Info(string.Format(Resources.GrassCoverErosionOutwardsWaveConditionsCalculationActivity_OnRun_Subject_0_for_waterlevel_1_started_time_2_,
+                                                     calculation.Name,
+                                                     waterLevel,
+                                                     DateTimeService.CurrentTimeAsString));
+
+                              ProgressText = string.Format(Resources.GrassCoverErosionOutwardsWaveConditionsCalculationActivity_OnRun_Calculate_waterlevel_0_, waterLevel);
+
+                              var output = WaveConditionsCalculationService.Instance.Calculate(waterLevel,
+                                                                                               a,
+                                                                                               b,
+                                                                                               c,
+                                                                                               norm,
+                                                                                               calculation.InputParameters,
+                                                                                               hlcdDirectory,
+                                                                                               assessmentSection.Id,
+                                                                                               calculation.Name);
+
+                              if (output != null)
+                              {
+                                  outputs.Add(output);
+                              }
+
+                              log.Info(string.Format(Resources.GrassCoverErosionOutwardsWaveConditionsCalculationActivity_OnRun_Subject_0_for_waterlevel_1_ended_time_2_,
+                                                     calculation.Name,
+                                                     waterLevel,
+                                                     DateTimeService.CurrentTimeAsString));
+                          }
+
+                          log.Info(string.Format(RingtoetsCommonServiceResources.Calculation_Subject_0_ended_Time_1_,
+                                                 calculation.Name,
+                                                 DateTimeService.CurrentTimeAsString));
+
+                          return outputs.Any() ? outputs : null;
+                      });
         }
 
         protected override void OnFinish()
         {
-            throw new System.NotImplementedException();
+            PerformFinish(() =>
+            {
+                calculation.Output = new GrassCoverErosionOutwardsWaveConditionsOutput(Output);
+            });
         }
     }
 }
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