FAY SPOFFORD & THORNDIKE LLC
INSTRUMENTATION AND DRILLING SERVICES AT SIX NEW ENGLAND DAMS. - During recent periodic inspections of Conant Brook, Everett Lake,Surry Mountain, Knightville, Otter Brook, and Thomaston dams a few deficiencies in the instrumentation program were identified. The deficiencies range from damaged inoperative instruments,to inadequate coverage. These dams are in excess of 50 years old and have experienced various amounts of siltation, increased seepage, piping, and vandalism. This scope of work addresses these deficiencies in order to better monitor and maintain these dams.
Three double piezometers at Everett Lake, two double piezometers and an observation well at Surry Mountain, one double piezometer at Thomaston dam, three double piezometers at Otter Brook, and a crest survey monument at Conant Brook shall be installed. A pizocone investigation of the embankment core at Knightville will be conducted. The Piezocone investigation at Knightville shall be supplemented with a standard test boring.