If this has how ever been done we have not been able to locate this
information with our limited resources.
During our search for any such document we came accross this site
which needs further evaluation.
http://www.csc.noaa.gov/beachnourishment/html/human/socio/recvalue.htm
please send comments and ideas relating to this issue to
ar...@webmail.co.za
Many thanx for your support.