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E-M:/ Kawkawlin, MI Hartley radwaste site, near bay city
- Subject: E-M:/ Kawkawlin, MI Hartley radwaste site, near bay city
- From: "Alex J. Sagady & Associates" <email@example.com>
- Date: Thu, 02 Mar 2006 14:17:26 -0500
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[Federal Register: March 2, 2006 (Volume 71, Number 41)]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
NUCLEAR REGULATORY COMMISSION
[Docket No. 40-09022]
Environmental Assessment and Finding of No Significant Impact
Related to Issuance of Amendment No. 4 to Materials License No. Suc-
1565, the S.C. Holdings, Inc., Bay City, Mi Site (Tac #L60510)
AGENCY: Nuclear Regulatory Commission.
ACTION: Environmental assessment and finding of no significant impact.
FOR FURTHER INFORMATION CONTACT: David Nelson, Project Manager,
Materials Decommissioning Section, Decommissioning Directorate,
Division of Waste Management and Environmental Protection, Office of
Nuclear Material Safety and Safeguards, U.S. Nuclear Regulatory
Commission (NRC), Mail Stop T7E18, Washington, DC 20555.
Telephone: 301-415-6626; fax number: 301-415-5397; e-mail: <A HREF="mailto:firstname.lastname@example.org">
NRC is considering the issuance of a license amendment to the S.C.
Holdings, Inc. Material License, No. SUC-1565. The amendment would
incorporate the Decommissioning Plan (DP), the Quality Assurance
Project Plan for Decommissioning Activities, and the Health and Safety
Plan for Site Decommissioning Activities into Materials License SUC-1565.
NRC has prepared an Environmental Assessment (EA) in support of
this amendment request in accordance with the requirements of 10 CFR
Part 51. Based on the EA, NRC concluded that a Finding of No
Significant Impact (FONSI) is appropriate.
II. Environmental Assessment
The S.C. Holdings site is a part of the former (now closed)
industrial waste disposal area locally known as the Hartley & Hartley
Landfill. The landfill is a former waste disposal facility that
accepted municipal and industrial waste from the 1950s until 1978. The
facility is estimated to have received 18,000 barrels of spent
solvents, oils, and other liquid and solid wastes for disposal during
the 1960's and early 1970's. During the period from 1970 to 1972,
foundry slag containing radioactive thorium (Th) and progeny was
disposed of in the Northwest Landfill, and in two small slag piles
outside of the Northwest Landfill (Slag Piles A and B). There are no
records of Th-bearing slag outside the Northwest Landfill and the two
slag piles. In 1995, the NRC issued Source Materials License No. SUC-
1565 to SCA Services, Inc., for storage of radioactive Th and uranium
(U) in slag/waste at the Hartley & Hartley Landfill site. The current
owner of the property is S.C. Holdings, Inc., successor by merger to
SCA Services, Inc.
The Hartley & Hartley Landfill industrial disposal site has been
subdivided into two separate sites: the Michigan Department of Natural
Resources (MDNR) site and the S.C. Holdings, Inc. site. In a formal
land exchange concluded in 1973, the Hartleys conveyed land to the
State of Michigan that included approximately three acres where waste
disposal had previously occurred in return for lands bordering their
industrial waste disposal area. The 3-acre portion, now known as the
MDNR site, is part of the State of Michigan's Tobico Marsh State Game
Area. The remaining property comprises what is known as the S.C.
Holdings, Inc. site.
Post-closure activities at the site included construction of slurry
walls, subsurface clay dikes, and compacted clay covers over the
Northwest and East Landfills to contain the chemical wastes and
preclude the potential migration of chemical (non-radioactive)
contaminants beyond those areas already impacted by the disposal.
Wells and piping for a leachate collection and treatment system
(LCTS) will be installed within the Northwest Landfill. Wells and
piping have already been installed in the East Landfill and in the
adjacent MDNR waste cell. After piping is installed in the Northwest
Landfill, the LCTS will collect liquid (leachate) from the MDNR cell,
and the Northwest and East Landfills and pump the leachate to a single
collection tank located adjacent to the East Landfill. The LCTS was
designed to withdraw liquid contaminants (leachate) from the waste cell
and landfills to prevent hydrostatic pressure in the cell from building
to a point that chemical contaminants would leak out.
On November 26, 2003, S.C. Holdings, Inc. submitted a
Decommissioning Plan (DP) for the site. The DP outlined decommissioning
activities including excavating and relocating of Slag Piles A and B to
the Northwest Landfill, installing LCTS wells and piping in the
Northwest Landfill, and upgrading the existing cover over the Northwest
Landfill. Following these activities, the site would be released for
unrestricted use, as specified in 10 CFR 20.1402, and the radioactive
materials license would be terminated. On October 14, 2004, and October
28, 2005, the NRC staff transmitted letters to S.C. Holdings, Inc.
requesting additional information (RAI) related to the DP. In letters
dated May 9, 2005, and December 8, 2005, S.C. Holdings, Inc. responded
to the RAIs.
The Proposed Action
The proposed action is to amend Source Materials License No. SUC-
1565 to incorporate the DP, the Quality Assurance Plan, and the Health
and Safety Plan into the license. The DP proposes excavating and
relocating Slag Piles A and B to the Northwest Landfill, installing
LCTS wells and piping in the Northwest Landfill, and upgrading the
existing cover over Northwest Landfill. With regard to the radiological
materials, the site will be released for unrestricted use in accordance
with 10 CFR 20.1402.
Need for the Proposed Action
The proposed action is to amend Source Materials License No. SUC-
1565 to authorize activities on-site that would lead to the release of
the S.C. Holdings, Inc. site located at 2370 South Two Mile Road, Bay
City, Michigan, for unrestricted use. The licensee's proposed action of
relocating the Th-bearing slag from Slag Piles A and B into the
Northwest Landfill and leaving all of the radioactive material in place
within the Landfill is one option that would conform with the NRC
regulation that the dose to the average member of the critical group is
below the requirements in 10 CFR Part 20 Subpart E for license
termination and unrestricted release. The licensee needs the license
amendment incorporating the DP, the Quality Assurance Project Plan, and
the Health and Safety Plan into the license, to be able to decommission
the site. The NRC is fulfilling its responsibilities under the Atomic
Energy Act, as amended, to make a decision on a proposed license amendment
for incorporation of a DP into the license and to ensure adequate
protection of public health and safety and the environment.
Alternatives to the Proposed Action
S.C. Holdings, Inc. considered four alternatives to the proposed
decommissioning plan: (1) Completely removing Slag Piles A and B and
the contents of the East and Northwest Landfills (both radiological and
chemical materials); (2) removing only the radiological material from
the Piles and the Northwest Landfill; (3) relocating Slag Piles A and B
into the Northwest Landfill, installing a LCTS in the Northwest and
East Landfills, and enhancing the Northwest Landfill Cap; and (4)
taking no remedial action and retaining the site license (``No Action
Alternative''). The licensee's preferred alternative is Alternative No.
3, which is described, in detail, in the DP.
The S.C. Holdings, Inc. site contains both radiological and
chemical materials. The chemical materials are regulated by the State
of Michigan Department of Environmental Quality (MDEQ) under Part 201
of Michigan regulations. The chemical materials are contained within
the East and Northwest Landfills both of which have slurry walls and
caps. The radiological materials are confined to the Northwest Landfill
and Slag Piles A and B. The Slag Piles are covered with clay fill.
Alternatives 1 and 2 would cause the contents of the waste cell to
be open to the environment and disturbed, potentially leading to
release of those contents into the surrounding environment.
Specifically, excavation of the landfills would expose workers and
visitors to hazardous materials within the cell. Hazardous materials
could be released into the surrounding environment via effluents,
airborne particles and/or gases. Shipping the materials off-site for
disposal could also expose workers and others to the materials before,
during, and after shipment to a waste disposal site. The environmental
impact presented by these two alternatives could potentially put
workers and the surrounding environment at risk, and therefore, are not
environmentally sound options.
Alternative 3 is the preferred alternative, because the alternative
has little, if any, impact on the environment. Once Piles A and B have
been relocated, all radiological materials will be confined to the
Northwest Landfill. Based on an independent dose assessment, the NRC
staff concluded that, if the radiological material is consolidated into
the Northwest Landfill and the LCTS is left in place, as described in
the DP, then no additional actions would be needed at the S.C. Holdings
site for it to be released for unrestricted use per 10 CFR 20.1402.
The impacts from the ``No Action Alternative'' (Alternative 4) are
similar to the preferred alternative, in that, they would present
little if any risk to workers and/or the surrounding environment.
However, Alternative 4 is not acceptable, because retaining a license
would impose an unnecessary regulatory burden on S.C. Holding, Inc.
Since no additional actions would be needed at the site following the
proposed actions, described in the DP (Alternative 3), for it to be
released for unrestricted use per 10 CFR 20.1402, there would no longer
be any need for requiring that the licensee maintain site security and/
or maintain the site's materials license.
Environmental Impacts of the Proposed Action
The affected environment at the Site includes the Northwest
Landfill bounded by a slurry wall covered with a cap, and two piles of
slag (Slag Piles A and B) located adjacent to the Northwest Landfill.
The slag in Slag Piles A and B will be excavated and relocated into the
Northwest Landfill through a small hole that will be cut into the cap.
The volume of material in Piles A and B is small in comparison to the
volume of the Landfill, therefore the physical placement of the
material into the Landfill will have no significant adverse effect on
the materials already located in the Northwest Landfill.
The residual radioactivity at the site consists of foundry waste
containing U/Th slag in the Northwest Landfill and two small areas of
U/Th slag (Slag Piles A and B) located just outside the slurry wall
surrounding the Northwest Landfill.
Additional radiological contamination could result from the primary
source term at the site through the operation of the existing Leachate
Collection and Treatment System (LCTS). The LCTS could result in the
leakage of thorium and its daughter products on the cap surface. Also,
the storage of thorium and its daughter products in an above ground
leachate tank associated with the LCTS could result in gamma radiation
exposure to site workers. Radioactivity associated with the LCTS and
the leachate tank would originate from groundwater in contact with the
thorium-bearing slag in the waste cell.
The non-radiological contamination at this site is contained within
both the Northwest and East Landfills. The non-radiological
contamination includes organic chemicals which are regulated by the
MDEQ, not by the NRC. The non-radiological contamination will be
present after NRC terminates the license. Approval of the proposed
action does not absolve the licensee of any other responsibilities it
may have under Federal, State, or local statutes or regulations
regarding the non-radiological contamination.
Much of the immediate area, except for the adjacent Bangor Township
Landfill, is marsh land of the Tobico Marsh State Game Area. Also
adjacent to the site is a separate facility known as MDNR Tobico Marsh
State Game Area Site, previously licensed by the NRC. There are several
ponds located on the site that had been excavated for sand as part of a
quarry operation prior to landfilling or had been excavated during site
activities for cell construction or cover material. The shallow
groundwater on-site is non-potable.
The environmental impacts of the licensee's requested action were
evaluated by reviewing the results of S.C. Holdings, Inc. dose
assessments for the Northwest Landfill and the slag piles. The
licensee's assessments assume that the radiological contaminants remain
within the Northwest Landfill, and surface soil of the excavated slag
piles does not exceed the derived concentration guideline levels
(DCGLs) of the DP. The licensee used the computer code, RESRAD Version
6.2, to demonstrate that doses from residual radioactivity do not
exceed the regulatory limit (25 millirem (mrem)/yr). The licensee used
the model to calculate the radiation dose expected to be received by a
hypothetical industrial worker beginning at the time of site closure
and extending into the future (i.e., 1000 years). The NRC staff
performed independent analyses of the licensee's dose assessments and
NRC's results were in agreement with S.C. Holdings, Inc. methods and
For the residual radioactivity in the Northwest Landfill, the
licensee assumed U and Th concentrations as measured by Oak Ridge
Associated University (ORAU) in 1985. ORAU determined that the
concentrations of the individual radionuclides present in the Northwest
Landfill were: (1) Lead-210--0.61pCi/g, (2) Radium (Ra)-226--0.61pCi/g,
(3) Ra-228--18.67pCi/g, (4) Th-228--17.96pCi/g, (5) Th-230--2.54pCi/g,
(6) Th-232--18.67pCi/g, and (7) U-234--2.54pCi/g. The licensee's
expected dose from to the material in the Northwest Landfill was 5
mrem/yr and no DCGLs were reported for the Landfill.
For the residual soil surface radioactivity of the excavated slag
piles, the licensee derived DCGLs. The licensee did not take into account
exposure from material in the Northwest Landfill in deriving the DCGLs
for the remediated slag piles, because the dose contribution from the
Northwest Landfill at the slag piles locations would not be
distinquishable from background. These DCGLs reflect the concentration
of radionuclides that may be present outside of the Northwest Landfill
and result in a maximum dose of less than 25 mrem per year over
background. The presence of these isotopes will be verified after the
remediation is completed and the final status survey is implemented.
Micro Shield, Version 5.01, was used to determine the dose from
exposure to the leachate tank. S.C. Holdings assumed that the 15,000-
gallon leachate storage tank that is located on the site is used to
collect leachate for the Northwest Landfill. The modeled scenario
assumed that tank is always completely full and the presence of thorium
radioactivity in slag at the specific activity limit. The exposure
scenario involves a worker who hypothetically stands 1 meter from the
leachate storage tank. For leachate leakage from the LCTS, the licensee
used an analysis performed by MDNR. The annual dose for the potential
leaking of the LCTS determined by MDNR was less than 1 mrem/yr. S.C.
Holding's analysis for the gamma radiation exposure for a worker within
close proximity to the leachate tank was less than 2 mrem/yr.
The NRC staff evaluated the potential radiological exposure to
offsite receptors resulting from groundwater seepage through the slurry
walls. This potential radiological exposure is very low due to the
1. Any seepage of radiological contaminated groundwater through the
slurry walls will be dispersed and diluted as the groundwater slowly
travels to Saginaw Bay of Lake Huron.
2. The travel time for groundwater to reach Saginaw Bay from the
site is long (several thousand years) because of the distance (2.24
kilometers) between the two locations and because of the low hydraulic
gradient (0.0002 ft/ft) of the water table.
3. The solubility of Th in groundwater is very low.
4. The concentration of the radiological contaminated groundwater
will become highly diluted if it is discharged into the much larger
surface water volume of Saginaw Bay.
5. There are no receptors along the groundwater pathway between the
site and Saginaw Bay, and none are anticipated, in the future.
The NRC staff reviewed the potential Environmental Impacts of the
licensee's requested action to relocate the Slag Piles into the
Northwest Landfill and leave the Northwest Landfill ``as is'' and
release it for unrestricted use. Based on the staff's review of the DP,
the staff determined that the radiological environmental impacts
associated with the licensee's proposed action are bounded by the
impacts evaluated in NUREG-1496, ``Generic Environmental Impact
Statement of Rulemaking on Radiological Criteria for License
Termination of NRC-Licensed Nuclear Facilities.''
Agencies and Persons Consulted
This EA was prepared entirely by the NRC staff. The Michigan State
Historic Preservation Office and the U.S. Fish and Wildlife Service
were contacted regarding this action and neither organization had
concerns regarding this licensing action. No remedial actions are
planned for the site. Therefore, the release of the S.C. Holdings, Inc.
site for unrestricted use would not affect historical or cultural
resources, nor will it affect threatened or endangered species. No
other sources of information were used beyond those referenced in this EA.
The NRC provided a draft of this EA to the MDEQ for its review on
October 27, 2005. The MDEQ agreed with the conclusions in the EA.
Conclusions and Finding of No Significant Impact
Based on its review, the NRC staff concludes that the proposed
action complies with 10 CFR 20, Subpart E. NRC has prepared this EA in
support of the proposed license amendment to approve the DP. On the
basis of the EA, NRC has concluded that the environmental impacts from
the proposed action are expected to be insignificant and has determined
that preparation of an Environmental Impact Statement (EIS) is not
needed for the proposed action.
1. NRC License No. SUC-1565.
2. S.C. Holdings, Inc., Letter dated November 26, 2003, ``Submittal
of the Decommissioning Plan SCA Hartley & Hartley Landfill Site,
Kawkawlin Township, Michigan NRC Materials License No. SUC-1565, Docket
No. 40-9022.'' [ADAMS Accession No. ML033450337]
3. NRC, Letter dated October 14, 2004, ``The Nuclear Regulatory
Commission's Request for Additional Information (RAI) with Regard to
the Decommissioning Plan 1, for the S.C. Holdings, Inc. Hartley and
Hartley Landfill Site, Kawkawlin, Michigan.'' [ADAMS Accession No.
4. S.C. Holdings, Inc., Letter dated May 9, 2005, ``Response to RAI
SCA Hartley & Hartley Landfill Site, Kawkawlin Township, Michigan NRC
Source License SUC-1565.'' [ADAMS Accession No. ML051380221]
5. S.C. Holdings, Inc., Letter dated December 8, 2005, ``Response
to Second Request for Additional Information SCA Hartley & Hartley
Landfill Site, Kawkawlin Township, Michigan NRC Source License SUC-
1565.'' [ADAMS Accession No. ML053480161]
6. S.C. Holdings, Inc., Letter dated September 15, 2005,
``Submittal of the Quality Assurance Project Plan and the Health and
Safety Plan for Site Decommissioning SCA Hartley & Hartley Landfill
Site, Kawkawlin Township, Michigan NRC Source License SUC-1565.''
[ADAMS Accession No. ML052640183]
7. NUREG-1748, Environmental Review Guidance for Licensing Actions
Associated with NMSS Programs, August 2003.
8. NUREG-1757, Volume 1, Rev 1, Consolidated NMSS Decommissioning
Guidance, Decommissioning Process for Materials Licensees, Final
Report, September 2003.
9. Title 10 Code of Federal Regulations, Part 20, Subpart E,
``Radiological Criteria for License Termination.''
10. Title 10, Code of Federal Regulations, Part 51, ``Environmental
Protection Regulations for Domestic Licensing and Related Regulatory
11. NUREG-1496, Generic Environmental Impact Statement of
Rulemaking on Radiological Criteria for License Termination of NRC-
Licensed Nuclear Facilities, July 1997.
12. MDNR, Response to RAI--Tobico Marsh State Game Area Site and
Submission of Additional Information Relative to the Decommissioning
Plan, August 27, 2004.
III. Finding of No Significant Impact
Based upon the analysis in this EA, NRC staff has concluded that
there will be no significant environmental impacts from the proposed
action and has determined not to prepare an Environmental Impact
Statement for the proposed action.
IV. Further Information
Documents related to this action, including the application for
amendment and supporting documentation, are available electronically at
NRC's Electronic Reading Room at <A HREF="http://www.nrc.gov/reading-rm/adams.html">http://www.nrc.gov/reading-rm/adams.html</A>.
From this site, you can access NRC's ADAMS,
which provides text and image files of NRC's public documents. The
ADAMS accession numbers for the documents related to this notice are:
ML033450337 for the November 26, 2003, letter submitting the
Decommissioning Project Plan; ML052640183 for the September 15, 2005,
letter submitting the Quality Assurance Plan and the Health and Safety
Plan, and ML051380221 and ML053480161 for the May 9, 2005, and December
8, 2005, letters responding to NRC requests for additional information.
If you do not have access to ADAMS or if there are problems accessing
the documents located in ADAMS, contact NRC's Public Document Room
(PDR) Reference staff at 1-800-397-4209, 301-415-4737, or by email to <A HREF="mailto:email@example.com">
These documents may also be viewed electronically on the public
computers located at NRC's PDR, O-1F21, One White Flint North, 11555
Rockville Pike, Rockville, MD 20852. The PDR reproduction contractor
will copy documents for a fee.
Dated at Rockville, Maryland this 20th day of February 2006.
For The Nuclear Regulatory Commission.
Daniel M. Gillen,
Deputy Director, Decommissioning Directorate, Division of Waste
Management and Environmental Protection, Office of Nuclear Material
Safety and Safeguards.
[FR Doc. E6-2947 Filed 3-1-06; 8:45 am]
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