[Federal Register Volume 86, Number 87 (Friday, May 7, 2021)]
[Notices]
[Pages 24675-24678]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-09720]
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NUCLEAR REGULATORY COMMISSION
[Docket No. 50-271; NRC-2021-0103]
Vermont Yankee and US Ecology Idaho Alternate Disposal Request
AGENCY: Nuclear Regulatory Commission.
ACTION: Environmental assessment and finding of no significant impact;
issuance.
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SUMMARY: The U.S. Nuclear Regulatory Commission (NRC) is considering
issuing an approval to NorthStar Nuclear Decommissioning Co., LLC
(NorthStar, or the licensee) for alternate disposal of low-activity
radioactive
[[Page 24676]]
wastewater containing byproduct material from the Vermont Yankee
Nuclear Power Station (VY) located in Vernon, Vermont. Additionally,
the NRC is considering the related action of approving an exemption to
US Ecology Idaho (USEI) from licensing to allow USEI to receive and
possess the byproduct radioactive materials from VY without an NRC
license. The NRC staff is issuing an environmental assessment (EA) and
finding of no significant impact (FONSI) associated with the proposed
approvals.
DATES: The EA and FONSI in this document are available on May 7, 2021.
ADDRESSES: Please refer to Docket ID NRC-2021-0103 when contacting the
NRC about the availability of information regarding this document. You
may obtain publicly available information related to this document
using any of the following methods:
Federal Rulemaking Website: Go to https://www.regulations.gov and search for Docket ID NRC-2021-0103. Address
questions about Docket IDs in Regulations.gov to Stacy Schumann;
telephone: 301-415-0624; email: [email protected]. For technical
questions, contact the individual listed in the FOR FURTHER INFORMATION
CONTACT section of this document.
NRC's Agencywide Documents Access and Management System
(ADAMS): You may obtain publicly available documents online in the
ADAMS Public Documents collection at https://www.nrc.gov/reading-rm/adams.html. To begin the search, select https://www.nrc.gov/reading-rm/adams.html and then select ``Begin Web-based ADAMS Search.'' For
problems with ADAMS, please contact the NRC's Public Document Room
(PDR) reference staff at 1-800-397-4209, 301-415-4737, or by email to
[email protected]. For the convenience of the reader, instructions
about obtaining materials referenced in this document are provided in
the ``Availability of Documents'' section.
Attention: The PDR, where you may examine and order copies
of public documents, is currently closed. You may submit your request
to the PDR via email at [email protected] or call 1-800-397-4209 or
301-415-4737, between 8:00 a.m. and 4:00 p.m. (EST), Monday through
Friday, except Federal holidays.
FOR FURTHER INFORMATION CONTACT: Jack D. Parrott, Office of Nuclear
Material Safety and Safeguards, U.S. Nuclear Regulatory Commission,
Washington, DC 20555-00001; telephone: 301-415-6634, email:
[email protected].
SUPPLEMENTARY INFORMATION:
I. Introduction
The NRC is considering a request by NorthStar, dated May 20, 2020,
as supplemented by letter dated September 21, 2020, and email dated
March 15, 2021, for alternate disposal of approximately 7.57 million
liters (2,000,000 gallons) of low-activity radioactive wastewater
containing byproduct material, from activities associated with the
decommissioning process at VY, to the USEI Resource Conservation and
Recovery Act (RCRA) Subtitle C hazardous and low-activity radioactive
waste treatment and disposal facility located near Grand View, Idaho.
Additionally, USEI requested, by letter dated May 4, 2020, an exemption
from the licensing requirements of Sec. 30.3 of title 10 of the Code
of Federal Regulations (10 CFR) to allow USEI to receive, process, and
dispose of byproduct radioactive material from VY without an NRC
license. These requests were made under the alternate disposal
provision contained in 10 CFR 20.2002 and the exemption provisions in
10 CFR 30.11. This EA has been developed in accordance with the
requirements of 10 CFR 51.30.
II. Environmental Assessment
Description of Proposed Action
The proposed action consists of NRC approval of NorthStar's
alternate disposal request under 10 CFR 20.2002 and USEI's exemption
request under 10 CFR 30.11. The proposed action arises from the
decommissioning of the shutdown VY reactor facility. By letter dated
January 12, 2015, Entergy Nuclear Operations, Inc. (ENO--the previous
VY licensee) certified that VY had permanently ceased power operations
and that all fuel had been permanently removed from the reactor vessel
and placed in the spent fuel pool, thus beginning the decommissioning
phase for VY.
In its May 20, 2020 letter, NorthStar requested approval for the
alternative waste disposal of certain low-activity radioactive
wastewater containing byproduct material (wastewater) resulting from
activities associated with the VY decommissioning process. NorthStar's
May 20, 2020 letter transmitted its application for alternative waste
disposal, which was submitted in accordance with 10 CFR 20.2002.
NorthStar's application described the processing and disposal of the
wastewater at the USEI facility.
In its May 4, 2020 letter, USEI also requested an exemption from
the licensing requirements of 10 CFR 30.3, pursuant to 10 CFR 30.11,
for the USEI facility in Grand View, Idaho, to allow for the disposal
of VY wastewater. Because the USEI facility is not licensed by the NRC,
this proposed action would require the NRC to exempt USEI from the
Atomic Energy Act of 1954, as amended (AEA) and NRC licensing
requirements in 10 CFR part 30 with respect to the low-activity
material authorized for disposal.
This request is similar to the previous VY request for alternate
disposal of 757,082 liters (200,000 gal) of low-activity radioactive
wastewater to the same USEI facility in 2016 that was approved by the
NRC in 2017. The primary difference between the previous request and
the request described in this EA/FONSI is the increased volume of the
material to be disposed.
The USEI facility is a RCRA Subtitle C hazardous waste disposal
facility permitted by the State of Idaho. The USEI site has both
natural and engineered features that limit the release of any stored
radioactive material into the environment. The natural features include
an arid climate with an annual precipitation rate of 18.4 cm (7.4 in)/
year, and an average vertical distance to groundwater below the
disposal zone of 61 m (203 ft). The engineered features include the
waste disposal facility covers, the liners, and the leachate monitoring
systems. The wastewater would be transported by rail tanker from the VY
facility in Vernon, Vermont to the USEI rail transfer facility located
in Mayfield, Idaho. Upon receipt of the water at the rail transfer
facility, the wastewater will be transferred to tanker trucks and
transported by roadway to the stabilization facility on the USEI site
where it will be solidified by mixing with clay prior to disposal.
The wastewater to be disposed consists of approximately 7.57
million liters (2,000,000 gal) of plant process and infiltration water
associated with the decommissioning of VY. This water will include
fission and activation products resulting from VY operations. The
radionuclide concentrations in the wastewater, are described in
NorthStar's submittal, and are of low activity consistent with ongoing
demolition activities including reactor vessel segmentation and
removal. For conservatism, the radiological concentrations in the water
to be solidified are assumed by the licensee to be above the measured
amount for any radionuclide that was detected and above the minimum
detectable concentration for any radionuclide that was not detected.
[[Page 24677]]
Need for Proposed Action
The need for the proposed action is to authorize an appropriate
method of disposal for surplus wastewater containing radioactive
material currently stored or expected to be generated at the shutdown
VY power reactor in Vernon, VT. The wastewater is generated as a result
of ongoing demolition activities including reactor vessel segmentation
and removal. The USEI facility in Grand View, Idaho has the capability
to receive and process the wastewater, solidify it with clay and
disposed of it as a soil-like waste.
Environmental Impacts of the Proposed Action
The NRC staff has reviewed the evaluation performed by the licensee
to demonstrate compliance with the 10 CFR 20.2002 alternate disposal
criteria. Under these criteria, a licensee may seek NRC authorization
to dispose of licensed material using procedures not otherwise
authorized by NRC regulations. The licensee's application must include
a description of the waste containing the licensed material, including
the physical and chemical properties important to risk evaluation, and
the proposed manner and conditions of disposal. The application must
also include an analysis and evaluation of pertinent environmental
information and the nature and location of any other potentially
affected licensed and unlicensed facilities. Finally, the licensee's
supporting analysis must show that the radiological doses arising from
the proposed 10 CFR 20.2002 disposal will be as low as reasonably
achievable and within the 10 CFR part 20 dose limits.
Based on this analysis, NorthStar concludes that the dose
equivalent for the maximally exposed individual, which includes workers
involved in the transportation and placement of this waste, will not
exceed ``a few mrem per year.'' The standard of a ``few [millirem per
year] mrem/yr'' to a member of the public is set forth in NRC
Regulatory Issues Summary 2004-08, ``Results of the License Termination
Rule Analysis.'' The USEI workers are treated as members of the public
because the USEI site, while permitted by the State of Idaho under RCRA
to accept certain radioactive materials, is not licensed by the NRC.
The NRC staff evaluated activities and potential doses associated
with waste handling and disposal as part of the review of this 10 CFR
20.2002 request. The NRC staff notes that the evaluation of the
transport dose to the public is not required per the most recent
revision to the ``Guidance for the Reviews of Proposed Disposal
Procedures and Transfers of Radioactive Material under 10 CFR 20.2002
and 10 CFR 40.13(a).'' Therefore, the NRC staff did not review the
transport dose during their review of this 20.2002 request. The NRC
staff evaluation is documented in a Safety Evaluation Report (SER). The
NRC's SER found that the licensee's projected doses to individual USEI
workers have been appropriately estimated and are demonstrated to meet
the NRC's alternate disposal requirement of not more than ``a few mrem/
yr'' to any member of the public.
The licensee also performed a radiological assessment of the
potential dose to the general public from the USEI RCRA facility after
its closure. They evaluated a post-closure dose to a member of the
public, the intruder construction scenario, the intruder well drilling
scenario, and the intruder driller occupancy scenario. The NRC guidance
on the review of 20.2002 requests notes that a licensee can take credit
for a thick cover to eliminate exposure scenarios involving intrusion
into the waste, such as eliminating a basement excavation scenario if a
cover is thicker than 3 m, because excavations are typically less than
3 m. Since the USEI cover is expected to be 6 m thick, the NRC staff
concluded in the SER that the intruder construction scenario is not
likely at the USEI site and that all of the other results for potential
dose to the general public were not more than ``a few mrem/yr.'' The
NRC staff's independent review of the post-closure and intruder
scenarios described in the SER confirmed that the maximum projected
dose over a period of 1,000 years is also within ``a few mrem/yr.''
The proposed action and attendant exemption of the disposal site
from further AEA and NRC licensing requirements will not significantly
increase the probability or consequences of accidents, and there is no
significant increase in occupational or public radiation exposure at
the off-site disposal facility. In general, the sorts of activities
associated with the proposed action at the VY facility are bounded by
the environmental analyses in the NRC's ``Generic Environmental Impact
Statement on Decommissioning of Nuclear Facilities,'' NUREG-0586,
Supplement 1, Volume 1 (2002) which discusses the processing of
contaminated liquids, and the removal and transportation of
radioactively contaminated material from decommissioning power reactor
sites. This EA incorporates by reference and tiers from NUREG-0586,
Supplement 1, Volume 1. Additionally, the NRC staff determined that the
proposed action (i.e., undertaking) does not involve the development or
disturbance of additional land so is not the type of activity that
would have the potential to cause effects on historic properties, and
would have no effect on endangered or threatened species or their
critical habitat not already evaluated in the Post Shutdown
Decommissioning Activities Report (PSDAR) for Vermont Yankee and
revised PSDAR.
Environmental Impacts of the Alternatives to the Proposed Action
As an alternative to the proposed action, the NRC staff considered
the no-action alternative, under which the staff would deny the
disposal request. The denial of the request would result in the
wastewater being transported to a licensed low-level radioactive waste
processing and disposal facility that is authorized to take this
wastewater. All other factors would remain the same or similar.
Therefore, the environmental impacts of the proposed action and the no-
action alternative are similar, and the no-action alternative is
accordingly was not further considered.
Agencies and Persons Consulted
The NRC provided a draft of this EA and draft of the NRC SER for
this proposed action to the Idaho Department of Environmental Quality
and the Vermont Department of Public Service for review on December 22,
2020, for a 30-day review. The State of Idaho Department of
Environmental Quality (IDEQ) responded by letter dated January 12,
2021. The IDEQ had no technical comments but had one concern that the
US Ecology's Site-Specific Dose Assessment methodology documents were
not available for review. The State of Vermont Department of Public
Service responded by letter dated January 29, 2021 and identified items
for further clarification concerning the safety evaluation: 1) the dose
from the cross country transportation of the contaminated wastewater
from VY to the USEI facility; 2) the dose from multiple rail tank cars
containing contaminated wastewater being marshalled in one location in
transit or at the USEI facility; 3) the number of railcar shipments
that would be needed to transport the 7.57 million liters (2,000,000
gal) of contaminated wastewater from VY to the USEI facility and the
potential impact that would have on the dose estimates; and, 4) if this
request would be sufficient to complete the disposal of the any
remaining wastewater from VY, specifically any generated from the final
decontamination of the structures
[[Page 24678]]
containing the contaminated wastewater that might have accumulated
sediments at the bottom with potentially higher activity per volume
than that contained in the wastewater. These comments were addressed in
the revised SER.
III. Finding of No Significant Impact
The proposed action consists of the NRC approval of NorthStar's
alternate disposal request under 10 CFR 20.2002 and USEI's exemption
request under 10 CFR 30.11. The NRC staff has prepared this EA in
support of the proposed action. On the basis of this EA and NUREG-0586,
Supplement 1, which is incorporated by reference, the NRC finds that
the proposed action will not have a significant effect on the quality
of the human environment, and therefore, the preparation of an
environmental impact statement is not warranted. Accordingly, the NRC
has determined that a FONSI is appropriate.
IV. Availability of Documents
The documents identified in the following table are available to
interested persons through one or more of the following methods, as
indicated.
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Document description ADAMS Accession No.
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Alternate disposal request by NorthStar, ML20157A123.
dated May 20, 2020.
Alternate disposal request supplement ML20290A492.
letter, dated September 21, 2020.
Alternate disposal request supplement... ML21075A144 (Package).
e-mail, dated March 15, 2021............
USEI request for exemption, dated May 4, ML20174A590.
2020.
Safety Evaluation Report, dated March ML21081A085.
18, 2021.
``Guidance for the Reviews of Proposed ML18296A068.
Disposal Procedures and Transfers of
Radioactive Material under 10 CFR
20.2002 and 10 CFR 40.13(a),''
published April 2020.
ENO letter certifying cessation of power ML15013A426.
operations, dated January 12, 2015.
NRC Regulatory Issues Summary 2004-08, ML041460385.
``Results of the License Termination
Rule Analysis,'' dated May 28, 2004.
NRC's ``Generic Environmental Impact ML023470327 (Package).
Statement on Decommissioning of Nuclear
Facilities,'' NUREG-0586, Supplement 1,
Volume 1.
PSDAR for Vermont Yankee, dated December ML14357A110.
19, 2014.
Revised PSDAR for Vermont Yankee, dated ML17096A394.
April 6, 2017.
Draft NRC EA and SER e-mail sent to the ML21006A024.
Idaho Department of Environmental
Quality and the Vermont Department of
Public Service on December 22, 2020.
The State of Idaho Department of ML21028A526.
Environmental Quality response letter,
dated January 12, 2021.
The State of Vermont Department of ML21032A093.
Public Service response letter, dated
January 29, 2021.
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Dated: May 4, 2021.
For the U.S. Nuclear Regulatory Commission.
Bruce A. Watson,
Chief, Reactor Decommissioning Branch, Division of Decommissioning,
Uranium Recovery, and Waste Programs, Office of Nuclear Materials
Safety and Safeguards.
[FR Doc. 2021-09720 Filed 5-6-21; 8:45 am]
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