Date: December 19, 2007	Back to the DEC's Red Dog Mine main page
	Status: Active
	Location: North of Kotzebue, AK
ADEC Contaminated Sites Contact: Rich Sundet, Project Manager - 907-269-7578

DEC Risk Assessment Checklist and Tentative Risk Assessment Schedule for the

DeLong Mountain Regional Transportation System (DMTS) Transportation Corridor

Task Number	Check	Tasks	Date	Comment
1	þ	Risk Assessment Scoping Meeting	August 22, 2002	DEC Project Manager; DEC Risk Assessment Staff and consultants; Responsible Person (RP); and RP consultants
2	þ	Teck Cominco submits revised Conceptual Site Model (CSM)	Early Oct.2002 & Mid Dec. 02	Identifies all potential exposure. Submitted to DEC project manager. Second revised version submitted Mid-Dec. addressing DEC comments.
3	þ	DEC Approves Conceptual Site Model	January 22, 2003
4	þ	Teck Cominco submits Draft Work Plan for the Risk Assessment	January 2003	Includes CSM identifying all completed pathways. Submitted to DEC project manager.
5	þ	Public review and comment period on Draft Work Plan, including human health and ecological risk	Mid-Jan. - late Feb. 2003	30-day Public Notice Period during Feb. 03 for comments on the Draft Work Plan, including public meetings
6	þ	DEC works with Teck Cominco to address DEC's concerns and public comments on the risk assessment work plan.	Mid-March - Dec. 2003	To DEC project manager
7	þ	Field sampling: Teck Cominco develops a Sampling Plan to fill in soil and other physical data gaps identified during the work plan process* Data gathered in summer.	Mid-June 2003	DEC approves sampling plan
8	þ	DEC provides comments to Teck Cominco on the draft risk assessment workplan and publishes Responsiveness Summary (PDF 47K)	December 2003 and early February 2004
9	þ	Teck Cominco submits a revised Risk Assessment Work Plan.	Early February 2004
10	þ	DEC provides comments regarding revised Risk Assessment Work Plan (PDF 556K).	Mid-April 2004
11	þ	DEC approves Sampling Plan and publishes Responsiveness Summary.	Early June 2004
12	þ	More field sampling:Teck Cominco gathers data on plants and animals. Data collected in summer.	Early June 2004	DEC approves sampling plan
13	þ	Teck Cominco submits final response to DEC revised Risk Assessment Work Plan comments.	Mid-September 2004
14	þ	Comment resolution meeting. Discussions on-going between DEC and Teck Cominco.	Mid-April to early October 2004
15	þ	DEC approves revised Risk Assessment Work Plan and publishes Responsiveness Summary (response to comments on draft)	October 20, 2004	For the revised risk assessment work plan
16	þ	DEC Reviews draft Risk Assessment report	September 8, 2005	Comments provided to RP after a public notice period, April 12 - July 11, for comments on the draft Risk Assessment Report
17	þ	Teck Cominco Submits response to DEC Risk Assessment Comments	November 10, 2005 to June 28, 2007	To DEC project manager
18	þ	Comment Resolution Meeting	June 29 to October 30, 2007	For the risk assessment draft Report
19	þ	DEC Approves the Risk Assessment Report	December 19, 2007	For the risk assessment final Report
20	o	DEC Makes Risk Management Decision and Approves Alternative Cleanup Levels, Remedial Action, or No Further Action	TBD
*Some tasks may occur concurrently **TBD = To be determined