Grimshaw Lake Culvert Replacement Project

Grimshaw Lake Culvert Replacement Project

CDFG is executing a Lake and Streambed Alteration Agreement pursuant to Section 1602 (SAA # 1600-2009-0099-R6) of the Fish and Game Code to the project applicant, Inyo County Road Department. The Applicant proposes to replace three disintegrating culvert under Tecopa Hot Springs Road. New culvert pipe, approximately 18 inches in diameter and 50 to 60 feet long depending on the width of the roadway at each of the three locations, will be installed, Culvert 2 will be installed dry. A temporary dam will be installed on the inlet side of culverts 1 and 3 to provide a dry work area. In the even that water enters the work area, water will be pumped across the road and back into Grimshaw Lake. A pump with a suction screen on the intake will be used to prevent entrainment of organisms into the suction hose. All three culverts will be encased in structural concrete to ensure structural support for the roadway. When work is completed, water will then be diverted into the new culvert structures. Constuction equipment will enter and exit the project site and will be staged within the limits of Tecopa Hot Springs Road. Work will begin in October and will take 2 to 3 weeks to complete.

Inyo