Boyce Hydro update on Sanford Dam – Tuesday, October 4th, 2010

To Sanford Lake Association Board of Directors from Lee Mueller:

Last week FERC accepted Boyce Hydro’s updated dam stability analysis that was prepared by Steve Doret, P.E. and submitted to FERC for review. Boyce Hydro now has authorization to raise the Sanford Lake level to a maximum of 629.8 (USGS) which is one foot below normal operating level. This approval is subject, however, to the results of daily readings of the new monitoring wells and the conditions in the embankment that we may observe each day. If wet spots re-emerge then the water level in the lake will be dropped.

As a consequence of FERC’s actions, we are now gradually raising the lake level while we are underway with the embankment repairs which will continue for the at least the next four weeks. As of this morning, the Sanford Lake level was at approximately 628.15 (USGS). Normal pond is 630.8 (USGS) so at the present time the Sanford Lake level is approximately 2.65’ below normal pond. I expect that the water level will increase at a rate of around two or three inches per day depending on rain inflows.
Lee W. Mueller, Architect & Co-Member Manager
Boyce Hydro, LLC
6000 South M-30 (P.O. Box 15)
Edenville, MI 48620
tel: (989) 689-3161 / fax: (989) 689-3055