Document ID: EPA-HQ-SFUND-1990-0011-0137
Agency: epa
Document Type: Proposed Rule
Title: National Oil and Hazardous Substances Pollution Contingency Plan; National Priorities List: Partial Deletion of the Mystery Bridge Road/U.S. Highway 20 Superfund Site
Posted Date: 2017-06-30T04:00Z

[Federal Register Volume 82, Number 125 (Friday, June 30, 2017)]
[Proposed Rules]
[Pages 29809-29810]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2017-13679]

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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 300

[EPA-HQ-SFUND-1990-0011; FRL-9963-94-Region 8]

National Oil and Hazardous Substances Pollution Contingency Plan 
National Priorities List: Partial Deletion of the Mystery Bridge Road/
U.S. Highway 20 Superfund Site

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule; notice of intent.

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SUMMARY: The Environmental Protection Agency (EPA) Region 8 is issuing 
a notice of Intent to Partially Delete the property currently owned by 
Tallgrass Energy Partners, LP (formerly owned by KM Upstream LLC and 
hereinafter referred to as the former KMI Property), on the Mystery 
Bridge Road/U.S. Highway 20 Site (Site) from the National Priorities 
List (NPL). The Site is located in Natrona County, northeast of Casper, 
Wyoming. EPA requests public comment on this proposed action. The NPL, 
promulgated pursuant to section 105 of the Comprehensive Environmental 
Response, Compensation, and Liability Act (CERCLA) of 1980, as amended, 
is an appendix of the National Oil and Hazardous Substances Pollution 
and Contingency Plan (NCP). The EPA and the State of Wyoming, through 
the Wyoming Department of Environmental Quality (WDEQ), have determined 
that all appropriate response actions, other than maintenance of 
institutional controls and five-year reviews, have been completed for 
the former KMI source area and the resultant groundwater contamination. 
However, this deletion does not preclude future actions under 
Superfund.
    This partial deletion pertains to the former KMI Property of OU1 
and OU2 formerly containing the benzene, toluene, ethylbenzene, and 
total xylenes (collectively known as BTEX) groundwater plume and source 
soils, respectively. The remaining area and media of both OU1 and OU2 
containing the volatile halogenated organic chemicals (VHOs) source 
soils and

[[Page 29810]]

plume, which are attributable to the Dow Chemical Company/Dowell 
Schlumberger, Inc. (DOW/DSI) facility, will remain on the NPL and are 
not being considered for deletion as part of this action. A map and the 
description of the surveyed boundaries of the former KMI Property are 
included in the docket and at the information repositories listed 
below.

DATES: Comments concerning this action must be received by July 31, 
2017.

ADDRESSES: Submit your comments, identified by Docket ID no. EPA-HQ-
SFUND-1910-0011, by one of the following methods:
     http://www.regulations.gov. Follow on-line instructions 
for submitting comments.
     Email: Andrew Schmidt (schmidt.andrew@epa.gov)
     Mail: Andrew Schmidt, Remedial Project Manager, 8EPR-SR, 
Environmental Protection Agency, Region 8, 1595 Wynkoop Street, Denver, 
CO 80202.
     Hand Delivery: Andrew Schmidt, Remedial Project Manager, 
8EPR-SR, Environmental Protection Agency, Region 8, 1595 Wynkoop 
Street, Denver, CO 80202.
    Such deliveries are only accepted during the Docket's normal hours 
of operation, and special arrangements should be made for deliveries of 
boxed information.
    Instructions: Direct your comments to Docket ID no. EPA-HQ-SFUND-
1910-0011. EPA's policy is that all comments received will be included 
in the public docket without change and may be made available online at 
http://www.regulations.gov, including any personal information 
provided, unless the comment includes information claimed to be 
Confidential Business Information (CBI) or other information whose 
disclosure is restricted by statute. Do not submit information that you 
consider to be CBI or otherwise protected through http://www.regulations.gov or email. The Web site, http://www.regulations.gov, 
is an ``anonymous access'' system, which means EPA will not know your 
identity or contact information unless you provide it in the body of 
your comment. If you send an email comment directly to EPA without 
going through http://www.regulations.gov, your email address will be 
automatically captured and included as part of the comment that is 
placed in the public docket and made available on the Internet. If you 
submit an electronic comment, EPA recommends that you include your name 
and other contact information in the body of your comment and with any 
disk or CD-ROM you submit. If EPA cannot read your comment due to 
technical difficulties and cannot contact you for clarification, EPA 
may not be able to consider your comment. Electronic files should avoid 
the use of special characters, any form of encryption, and be free of 
any defects or viruses.

Docket

    All documents in the docket are listed in the http://www.regulations.gov index. Although listed in the index, some 
information is not publicly available, e.g., CBI or other information 
whose disclosure is restricted by statute. Certain other material, such 
as copyrighted material, will be publicly available only in hard copy. 
Publicly available docket materials are available either electronically 
in http://www.regulations.gov or in hard copy at: U.S. EPA Region 8, 
Superfund Records Center & Technical Library, 1595 Wynkoop Street, 
Denver, CO 80202-1129.
    Viewing hours: 8 a.m. to 4:00 p.m., Monday through Thursday, 
excluding holidays;
    Contact: Andrew Schmidt; (303) 312-6283; email: 
schmidt.andrew@epa.gov and Natrona County Public Library, Reference 
Desk, 307 East 2nd Street, Casper, WY 82601-2593, (307) 777-7092.

Monday-Thursday: 9 a.m.-6 p.m.
Friday and Saturday: 9 a.m.-5 p.m.

FOR FURTHER INFORMATION CONTACT: Andrew Schmidt, Remedial Project 
Manager, 8EPR-SR, U.S. Environmental Protection Agency, Region 8, 1595 
Wynkoop Street, Denver, CO 80202-1129, (303) 312-6283, email: 
schmidt.andrew@epa.gov.

SUPPLEMENTARY INFORMATION: In the ``Rules and Regulations'' section of 
the Federal Register, we are publishing a direct final notice of 
Partial Deletion for the former KMI Property containing portions of 
Operable Unit 1 and 2, and the former BTEX impacted areas, of the 
Mystery Bridge Road/U.S. Highway 20 Superfund Site (Site) without prior 
notice of Intent for Partial Deletion because EPA views this as a 
noncontroversial revision and anticipates no adverse comment. We have 
explained our reasons for this partial deletion in the preamble to the 
direct final notice of Partial Deletion, and those reasons are 
incorporated herein. If we receive no adverse comment(s) on this 
partial deletion action, we will not take further action on this notice 
of Intent for Partial Deletion. If we receive adverse comment(s), we 
will withdraw the direct final notice of Partial Deletion based on this 
notice of Intent for Partial Deletion. We will, as appropriate, address 
all public comments in a subsequent final notice of Partial Deletion 
based on this notice of Intent for Partial Deletion. We will not 
institute a second comment period on this notice of Intent for Partial 
Deletion. Any parties interested in commenting must do so at this time.
    For additional information, see the direct final notice of Partial 
Deletion, located in the Rules section of this Federal Register.

List of Subjects in 40 CFR Part 300

    Environmental protection, Air pollution control, Chemicals, 
Hazardous waste, Hazardous substances, Intergovernmental relations, 
Penalties, Reporting and recordkeeping requirements, Superfund, Water 
pollution control, Water supply.

    The authority citation for Part 300 is continues to read as 
follows:

    Authority:  33 U.S.C. 1321(c)(2); 42 U.S.C. 9601-9657; E.O. 
12777, 56 FR 54757, 3 CFR, 1991 Comp., p. 351; E.O. 12580, 52 FR 
2923; 3 CFR, 1987 Comp., p. 193.

    Dated: May 1, 2017.
Debra H. Thomas,
Acting Regional Administrator, U.S. Environmental Protection Agency, 
Region 8.
[FR Doc. 2017-13679 Filed 6-29-17; 8:45 am]
 BILLING CODE 6560-50-P