Concerned about eroding profits and the nuisance of continued redeployment of men and equipment, Q&D Construction decided this summer to work around the clock to complete erosion-control work at Lake Tahoe. The general contracting firm last week wrapped up the bulk of its work four years ahead of schedule.Q&D had three contracts for work on State Route 28 and Mount Rose Highway from the junction of State Route 28 to Tahoe Meadows. Due to snow and summer tourism, the company could only work from May 15 through June 30th and Sept. 1 through Oct. 15.This made for a five-season job …