J.G. Management Systems » Executive Council Directory Go back to directory. Add to Address Book. J.G. Management Systems No Photo AvailableJ.G. Management Systems Contact: Jerome Gonzales Home 336 Main Street Grand Junction CO 81501 home Work Phone: (970) 254-1354work Work Email: email@example.com@selaznogjINTERNET A list can be obtained from the EFCOG Administrator by member request.