SCH Number 2008082066

Title: Empire Mine State Historic Park, Site Characterization and Remediation Project
Description: Pursuant to Chapter 6.8 of the Health and Safety Code, Section 25300, the project is the DTSC's approval to implement the Empire Mine State Historic Park Mine Yard Area Remedial Action Alternatives Report, Alternative 5, Complete Removal Mine/Mill Material and Replacement with Imported Fill and Gravel Surfacing for the Empire Mine State Historic Park. Alternative 5 will completely remove mine and mill materials with metals concentrations above the defined risk-based criteria for the site thereby eliminating potential exposure pathways for human receptors and allow unrestricted, future use in the Stamp Mill foundation area of the park. Project activities include the following: excavation of approx. 1,175 cubic yards of contaminated materials within the Mine Yard/Mill areas up to be a depth of 60 inches, offsite disposal of contaminated materials to an authorized hazardous waste disposal facility, and placement of approx. 965 cubic yards of clean fill and 210 cubic yards of gravel surfacing to replace the contaminated materials areas.

11 documents in project

Type	Lead/Public Agency	Received	Title
NOD	Department of Toxic Substances Control	10/9/2020	Empire Mine State Historic Park Residences’ Yards Removal Action Workplan
NOD	California Department of Parks and Recreation	7/9/2018	Empire Mine State Historic Park Mine Yard Area Remedial Action Alternatives Report
NOD	California Department of Parks and Recreation	5/7/2013	1600-2011-0009-R2 Magenta Drain, Empire Mine State Historic Park (EMSHP)
NOD	California Department of Parks and Recreation	4/22/2013	Site Charachterization and Remediation
NOD	California Department of Parks and Recreation	12/18/2012	Draft Mining Derived Sediment Removal Work Plan
NOD	California Department of Parks and Recreation	12/6/2011	Remedial Action Alternatives Report, Cyanide Plant and Adit Project Area
NOD	California Department of Parks and Recreation	9/21/2011	Remedial Action Alternatives Report, Cyanide Plant and Adit Project Area
NOD	California Department of Parks and Recreation	5/24/2011	Megenta Drain, Empire Mine State Historic Park Remediation Project
NOD	California Department of Parks and Recreation	12/30/2009	Empire Mine State Historic Park, Site Characterization and Remediation Project
EIR	California Department of Parks and Recreation	8/28/2009	Empire Mine State Historic Park, Site Characterization and Remediation Project
NOP	California Department of Parks and Recreation	8/15/2008	Empire Mine State Historic Park, Site Characterization and Remediation Project