diff --git a/Web/DAL/CityNotFoundException.cs b/Web/DAL/CityNotFoundException.cs
new file mode 100644
index 0000000..dcdd1f1
--- /dev/null
+++ b/Web/DAL/CityNotFoundException.cs
@@ -0,0 +1,11 @@
+using System;
+
+namespace MileageTraker.Web.DAL
+{
+	public class CityNotFoundException : Exception
+	{
+		public CityNotFoundException(string message) : base(message)
+		{
+		}
+	}
+}
\ No newline at end of file
diff --git a/Web/DAL/DataService.cs b/Web/DAL/DataService.cs
index d15012c..7d1a23e 100644
--- a/Web/DAL/DataService.cs
+++ b/Web/DAL/DataService.cs
@@ -8,7 +8,6 @@ using MileageTraker.Web.Utility;
 using MileageTraker.Web.ViewModels;
 using MileageTraker.Web.ViewModels.Log;
 using MileageTraker.Web.ViewModels.Vehicle;
-using MiscUtil.Collections;
 
 namespace MileageTraker.Web.DAL
 {
@@ -25,6 +24,9 @@ namespace MileageTraker.Web.DAL
 
 		public void AddLog(Log log)
 		{
+			if (FindCityByName(log.CityName) == null)
+				throw new CityNotFoundException("City Name '" + log.CityName + "' not found");
+
 			log.Created = DateTime.Now;
 			_db.Logs.Add(log);
 
@@ -46,6 +48,8 @@ namespace MileageTraker.Web.DAL
 
 		public void UpdateLog(Log log)
 		{
+			if (FindCityByName(log.CityName) == null)
+				throw new CityNotFoundException("City Name '" + log.CityName + "' not found");
 			// note: assumes log is already attached to current context
 
 			// remove from the list
@@ -134,19 +138,6 @@ namespace MileageTraker.Web.DAL
 			return ym.OrderByDescending(dt => dt).ToList();
 		}
 
-		//public IEnumerable<int> GetValidLogMonths(int year)
-		//{
-		//	var start = new DateTime(year, 1, 1);
-		//	var end = new DateTime(year + 1, 1, 1);
-		//	return
-		//	from l in GetLogs()
-		//	where l.Date >= start && l.Date < end
-		//	group l by new { month = l.Date.Month }
-		//		into m
-		//		orderby m.Key descending 
-		//		select m.Key.month;
-		//}
-
 		public IEnumerable<LogIndexViewModel> GetLogIndexViewModels(IQueryable<Log> logs)
 		{
 			var t =
diff --git a/Web/Web.csproj b/Web/Web.csproj
index b90ce12..0cb4d87 100644
--- a/Web/Web.csproj
+++ b/Web/Web.csproj
@@ -133,6 +133,7 @@
     <Compile Include="Controllers\ControllerBase.cs" />
     <Compile Include="Controllers\PurposeController.cs" />
     <Compile Include="Controllers\UserController.cs" />
+    <Compile Include="DAL\CityNotFoundException.cs" />
     <Compile Include="DAL\CodeFirstMembershipProvider.cs" />
     <Compile Include="DAL\CodeFirstRoleProvider.cs" />
     <Compile Include="DAL\LogImporter.cs" />