2020-12-02_PERMIT FILE - M2020061

• Permit No: M2020061
• IBM Index Class Name: Permit File
• Doc Date: 12/2/2020
• Doc Name: Is It Mining?
• From: Union Milling Contractors
• To: DRMS
• Email Name: DMC
• Media Type: D
• Archive: No

10/8/2020 Federal Register::National Oil and Hazardous Substance Pollution Contingency Plan:Partial Deletion of the California Gulch Superfund ...
are available electronically in http://www.regulations.gov(http://www.regulations.gov);by calling EPA
Region 8 at(303)312-7279 and leaving a message;and at the Lake County Public Library,1115 Harrison
Avenue,Leadville,CO 80461,[phone],Monday and Wednesday from io:oo a.m.-8:oo p.m.,Tuesday
and Thursday from io:oo a.m.-5:00 p.m.,and Friday and Saturday 1:oo p.m.-5:00 p.m.
FOR FURTHER INFORMATION CONTACT:
Linda Kiefer,Remedial Project Manager,U.S.Environmental Protection Agency,Region 8,Mailcode EPR-
SR,1595 Wynkoop Street,Denver,CO 80202-1129,[phone],email:[e-mail]
(mailto:[e-mail]).
SUPPLEMENTARY INFORMATION:
Table of Contents
I.Introduction
II.NPL Deletion Criteria
III.Partial Deletion Procedures
IV.Basis for Partial Site Deletion
V.Partial Deletion Action
I. Introduction
EPA Region 8 is publishing this direct final Notice of Partial Deletion for all of Operable Unit 1(OU1),Yak
Tunnel/Water Treatment Plant;and Operable Unit 3(OU3),Denver&Rio Grande Western Railroad
Company(D&RGW)Slag Piles/Railroad Easement/Railroad Yard,from the NPL.The NPL constitutes
Appendix B of the NCP,40 CFR part 300(/select-citation/2o16/02/09/4o-CFR-300),which EPA
promulgated pursuant to Section 105 of CERCLA of 198o,as amended.EPA maintains the NPL as the list of
sites that appear to present a significant risk to public health,welfare,or the environment.Sites on the NPL
may be the subject of remedial actions financed by the Hazardous Substance Superfund(Fund).This partial
deletion of the Site is proposed in accordance with 40 CFR 300.425(/select-citation/2016/02/09/40-CFR-
300.425)(e)and is consistent with the Notice of Policy Change:Partial Deletion of Sites Listed on the NPL.
6o FR 55466(/citation/6o-FR-55466)(November 1,1995).As described in 300.425(e)(3)of the NCP,a
portion of a site deleted from the NPL remains eligible for Fund-financed remedial action if future conditions
warrant such actions.
Section II of this document explains the criteria for deleting sites from the NPL.Section III discusses
procedures that EPA is using for this action.Section IV discusses OU1,Yak Tunnel/Water Treatment Plant;
and OU3,D&RGW Slag Piles/Railroad Easement/Railroad Yard,and demonstrates how they meet the
deletion criteria.Section V discusses EPA's action to partially delete the Site parcels from the NPL unless
adverse comments are received during the public comment period.
This partial deletion pertains to all of OU1 and OU3.Operable Unit 2(OU2),Malta Gulch Tailing
Impoundments and Lower Malta Gulch Fluvial Tailing;Operable Unit 4(OU4)Upper California Gulch;
Operable Unit 5(OU5),ASARCO Smelters/Slag/Mill Sites;Operable Unit 7(OU7),Apache Tailing
Impoundment;Operable Unit 8(OU8),Lower California Gulch;Operable Unit 9(OU9),Residential
hftps://www.federalregister.gov/documents/2016/02/09/2016-02601/national-oi I-and-hazard ous-substance-pollution-contingency-pla n-partial-deletion-... 4/16