SCH Number 1991113070

Project Info

Unimin Sand Quarry
The Central Valley Regional Water Board is issuing a 401 Water Quality Certification for the subject Project. The Project consists of constructing an at-grade concrete ford crossing on an existing unpaved ranch road crossing Frisk Creek, which is an intermittent stream. A portion of the stream bed will be excavated, then backfilled with clean gravel and overlayed with concrete. The concrete ford will be 20 feet wide and 55 feet long. Two high density polyethylene pipes will be installed beneath the ford to protect an 18 inch diameter water and a 12 inch mined sand slurry pipeline.
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5 documents in project

Type Lead/Public Agency Received Title
Contra Costa County Frisk Creek Crossing, Byron Mines Project
Contra Costa County G3 Enterprises Byron San Mine Expansion Project [California Endangered Species Act (CESA) Incidental Take Permit No. 2081-2015-017-03 (ITP)]
Contra Costa County Frisk Creek Crossing; G-3 Byron Mine
Contra Costa County Unimin Sand Quarry
Contra Costa County Unimin Sand Quarry