Get-acl returns the same rule two or three times

Hi

I've been working on a script to remove permissions from folders. I use get-acl and set-acl for this. However, get-acl returns the same rule name two or even three times.

ScreenShot

Code:

Function Remove($P1)
{
    #---Param
    [String]$Folder     = $P1
    [String]$RuleString = ""
    #---Disable inheritance
    DisableInhertiance $Folder
    $ACL = Get-ACL $Folder
    $AllRules = $ACL.Access | Select-Object -ExpandProperty IdentityReference

    ForEach($Rule in $AllRules)
    {
        Write-Host $Rule
        
        if($Rule -notmatch "admin" -and $Rule -match "PFS\\")
        {            
            $RuleString = $Rule
            $ACL.Access | Where {$_.IdentityReference -eq $RuleString} | %{$ACL.RemoveAccessRule($_)}

            Try
            {
                Set-Acl $Folder $ACL -ErrorActionPreference SilentlyContinue
            }
            
            Catch
            {
                WriteToLog "Rule $RuleString couldn't be removed from folder $Folder."
            }
        }
    }
}

Any ideas here?

Regards