SCH Number 2014042014

Project Info

Title

Leona Heights Sulfur Mine Remediation

Description

This proposed project involves remediating the waste mine tailings and stabilizing the Leona Creek channel. Project activities include grubbing and grading the entire Project site; tree removal; grading and compacting the tailings and installing a subsurface drainage system to increase stability; covering tailings with a geomembrane liner that will isolate the tailings from water; reinforcing the steep slopes adjacent to the creek channel to improve stability; and restoring the creek channel to provide for the natural transport of sediment through the creek. The project will result in impacts to 1.34 acres of Alameda whipsnake habitat including temporary impacts to 0.08 acres; the project will permanently remove 1.26 acres of Alameda whipsnake habitat. The project is expected to result in incidental take of Alameda whipsnake, which is designated as a threatened species under CESA. Minor Amendment No. 1 makes a simple administrative extension to the deadline in which the completion of the Habitat Management land compensatory mitigation must occur for an additional three in which the completion of the Habitat Management land compensatory mitigation must occur for an additional three 6 months to 24 months from the date of issuance of the ITP. The ITP referenced above as issued by CDFW authorizes incidental take of species listed under CESA that may occur as a result of project implementation.

4 documents in project