UnauthorizedAccess Exception: When copying Sharepoint 2010 list item

I am looking for assistance to resolve an exception being thrown when I attempt to copy an
added Blog list item from one Sharepoint WebApplication/ContenctDB(Webapp0) to a Blog list on a different Sharepoint WebApplication(Webapp1).  The exception raised is
System.UnauthorizedAccessException, however I am the primary adminstrator for both sites,
plus I am executing the code using RunWithElevatedPrivileges.  Help decyphering the error
would be appreicated.

I have attached the code.

The Exception being thrown is:

Error loading and running event receiver CopyBlogListItem.CopyBlogListItem in CopyBlogListItem,
Version = 1.0.0.0,  Culture=neutral, PublicKeyToken=ac27c065e1c5c56b.
Additional information is below.

: CopyBlogListItem, SPSecurity.RunWithElevatedPrivileges(copyListItem):
Exception: [System.Exception: CopyBlogListItem, targetItem.Update():
Exception: [System.UnauthorizedAccessException:
                  <nativehr>0x80070005</nativehr>
                  <nativestack></nativestack>
   at Microsoft.SharePoint.Library.SPRequest.AddOrUpdateItem
             (String bstrUrl, String bstrListName, Boolean bAdd, Boolean bSystemUpdate,
               Boolean bPreserveItemVersion, Boolean bUpdateNoVersion, Int32& plID,
               String& pbstrGuid, Guid pbstrNewDocId, Boolean bHasNewDocId, String bstrVersion,
               Object& pvarAttachmentNames, Object& pvarAttachmentContents,
               Object& pvarProperties, Boolean bCheckOut, Boolean bCheckin, Boolean bMigration,
               Boolean bPublish, String bstrFileName,
               ISP2DSafeArrayWriter pListDataValidationCallback,
               ISP2DSafeArrayWriter pRestrictInsertCallback,
               ISP2DSafeArrayWriter pUniqueFieldCallback)
   at Microsoft.SharePoint.SPListItem.AddOrUpdateItem
               (Boolean bAdd, Boolean bSystem, Boolean bPreserveItemVersion,
                Boolean bNoVersion, Boolean bMigration, Boolean bPublish,
                Boolean bCheckOut, Boolean bCheckin, Guid newGuidOnAdd, Int32& ulID,
                Object& objAttachmentNames, Object& objAttachmentContents,
                Boolean suppressAfterEvents, String filename)
   at Microsoft.SharePoint.SPListItem.UpdateInternal(Boolean bSystem,
                 Boolean bPreserveItemVersion, Guid newGuidOnAdd, Boolean bMigration,
                 Boolean bPublish, Boolean bNoVersion, Boolean bCheckOut, Boolean bCheckin,
                 Boolean suppressAfterEvents, String filename)
   at Microsoft.SharePoint.SPListItem.Update()
   at CopyBlogListItem.CopyBlogListItem.copyListItem()].
   at CopyBlogListItem.CopyBlogListItem.copyListItem()
   at Microsoft.SharePoint.SPSecurity.<>c__DisplayClass4.<RunWithElevatedPrivileges>b__2()
   at Microsoft.SharePoint.Utilities.SecurityContext.RunAsProcess
                 (CodeToRunElevated secureCode)
   at Microsoft.SharePoint.SPSecurity.RunWithElevatedPrivileges
                 (WaitCallback secureCode, Object param)
   at Microsoft.SharePoint.SPSecurity.RunWithElevatedPrivileges
                 (CodeToRunElevated secureCode)
   at CopyBlogListItem.CopyBlogListItem.ItemAdded(SPItemEventProperties properties)].

namespace CopyBlogListItem
{
    public class CopyBlogListItem : SPItemEventReceiver
    {

        // Local variable to contain data passed in from sharepoint
        private SPItemEventProperties _properties;

        // Method called after a new item has been added
        public override void ItemAdded(SPItemEventProperties properties)
        {
            // set up a log file
            log = new HTMLFileLogging(c_logFileFolder, string.Format(LogFileName, properties.ListTitle, properties.OpenWeb().Title), true, false);
            // run under system account
            this.WriteToLog("ItemAdded: Executing Event Handler", true);

            _properties = properties;
            this.WriteToLog("ItemAdded: Properties Set", true);
            try
            {
                SPSecurity.RunWithElevatedPrivileges(copyListItem);
            }
            catch (Exception e)
            {
                throw new Exception("CopyBlogListItem, SPSecurity.RunWithElevatedPrivileges(copyListItem): Exception: [" + e.ToString() + "].");
            }
            this.WriteToLog("ItemAdded: Event Handler Complete", true);
            
        }
        private void copyListItem()
        {

            //Step 0: get a handle to the item that raised the event
            this.WriteToLog("copyListItem: Get handle to item", true);
            SPListItem item = _properties.ListItem;

            //step 1: Check category property to determine receiving site.
            //***initialize targetURL***
            this.WriteToLog("copyListItem: Initializing targetURL", true);
            this.WriteToLog("copyListItem: Item Category is " + item["Category"] + ".", true);
            string targetURL = "0";
            string targetCategory = "";
            if (item["Category"].ToString() == "1;#Energy Conservation")
            {
                this.WriteToLog("copyListItem: Match on Energy Conservation", true);
                targetURL = "http://Webapp1:8083/blog/";
                targetCategory = "1;#Energy Conservation";
            }
            this.WriteToLog("copyListItem: targetURL Set", true);

            // Open the site if targetURL is set
            if (targetURL != "0")
            {
                this.WriteToLog("copyListItem: Preparing to open targetSite", true);
                using (SPSite targetSite = new SPSite(targetURL))
                {
                    using (SPWeb targetWeb = targetSite.OpenWeb())
                    {
                        this.WriteToLog("copyListItem: targetSite Opened", true);
                        
                        //Step 2: Set target list to receive new item
                        this.WriteToLog("copyListItem: Setting targetList", true);
                        SPList targetList = targetWeb.Lists["Posts"];

                        //Step 3: Initialize target list to receive copy of new item
                        this.WriteToLog("copyListItem: Initializing targetList", true);
                        SPListItem targetItem = targetList.Items.Add();

                        //Step 4: Initialize item properties on target list.
                        this.WriteToLog("copyListItem: Initializing targetItem", true);
                        targetItem["Location"] = item["Location"].ToString();
                        targetItem["Title"] = item["Title"].ToString();
                        targetItem["Body"] = item["Body"].ToString();
                        targetItem["Category"] = targetCategory.ToString();
                        targetItem["Published"] = System.DateTime.Now;
                        this.WriteToLog("copyListItem: Update targetItem", true);
                        try
                        {
                            targetItem.Update();
                        }
                        catch (Exception e)
                        {
                            this.WriteToLog("ERROR(targetItem.Update):" + e.Message.ToString(), true);
                            throw new Exception("CopyBlogListItem, targetItem.Update(): Exception: [" + e.ToString() + "].");
                        }
                    }
                }
            }
            this.WriteToLog("copyListItem: Sub-Process Complete", true);
        }
   }
}

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