The lizards were now extinct in the Alexandra basin and without human intervention, it was predicted the skinks would be extinct in the wild within 10-20 years, Dr Smith said.
''This makes the conservation work the trust carries out, in conjunction with the Department of Conservation, particularly important.''
Trustee Grant Norbury paid tribute to the ''raft of volunteers'' within the trust and to all the organisations who had provided funds for the sanctuary.
The community partnership fund has $26 million to distribute over four years for conservation and heritage projects.
Doc staff and Conservation Board representatives are involved in assessing the applications and Doc also monitors the progress of the projects which receive funding.
The Queen Elizabeth II National Trust was also given $4600 through the partnership fund, to control hawthorn, briar and elderberry weeds on a QEII covenant block covering 20ha at Waikerikeri, near Alexandra.
Earlier, Dr Smith ''opened'' the Tasman Valley Rd at Mount Cook, which got a $3 million upgrade, compliments of Doc and the New Zealand Transport Agency. The road was realigned to improve safety.