nopoo here is a link for your DD.
check out the tailings area in the mine plan, that has been filed, then approved by all concerned.
https://www.newgoldinc.com/i/pdf/Presentation02-07.pdf
currently the company, NGD, is implementing this same proposal to build the mine.
NGD should complete the construction and have the mine, mill {including tailings disposal} ready and running by Q4 2009.