FIFTH FIVE-YEAR REVIEW REPORT
NORTH CAROLINA STATE UNIVERSITY (LOT 86 FARM UNIT #1)
RALEIGH, WAKE COUNTY, NORTH CAROLINA
SEPTEMBER 2023
Prepared by
U.S. Environmental Protection Agency
Region 4
Atlanta, Georgia
RANDALL Digitally signed by RANDALL
CHAFFINS
CHAFF I NS Date: 2023.09.27 13:58:09 -04'00'
Caroline Y. Freeman, Director
Superfund & Emergency Management Division
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This Page Intentionally Left Blank
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V \!>LE of Contents
LIST OF ABBREVIATIONS AND ACRONYMS V
I. INTRODUCTION 1
Site Background 1
FIVE-YEAR REVIEW SUMMARY FORM 2
II. RESPONSE ACTION SUMMARY 5
Basis for Taking Action 5
Response Actions 5
Status of Implementation 8
Institutional Control Review 9
Systems Operations/Operation and Maintenance (O&M) 12
III. PROGRESS SINCE THE PREVIOUS REVIEW 13
IV. FIVE-YEAR REVIEW PROCESS 15
Community Notification, Community Involvement and Site Interviews 15
Data Review 15
Si II-: Inspection 20
V. TECHNICAL ASSESSMENT 21
QUESTION A: Is the remedy functioning as intended by the decision documents? 21
QUESTION B: Are the exposure assumptions, toxicity data, cleanup levels and RAOs used
AT THE TIME OF THE REMEDY SELECTION STILL VALID? 21
QUESTION C: Has any other information come to light that could call into question the
protectiveness of the remedy? 21
VI. ISSUES/RECOMMENDATIONS 22
VII. PROTECTIVENESS STATEMENT 23
VIII. NEXT REVIEW 23
Tables
Table 1: Groundwater Remediation Goals as Specified in the 1996 ROD 7
Table 2: Summary of Implemented Institutional Controls (ICs) 10
Table 3: O&M Costs 13
Table 4: Protectiveness Determinations/Statements from the 2018 FYR Report 13
Table 5: GWE System Effluent Groundwater Analyses and Discharge Limitations,
City of Raleigh Industrial User Pretreatment Permit (Remedial Action Progress
Report January-December 2021) 16
Table 6: Contaminants Not Designated in the ROD and the Highest Concentration
Detected during August 2021 Sampling Event 20
in
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Figures
Figure 1: Site Location Map 3
Figure 2: Site Layout Map 4
Figure 3: IC Parcel Map 11
Figure 4: Groundwater Extraction System Layout 17
Figure 5: Site Monitoring Wells with Statistical Increase in COCs Concentrations
over time 19
Appendix
APPENDIX A REFERENCE LIST
APPENDIX B SITE CHRONOLOGY
APPENDIX C CURRENT SITE STATUS
APPENDIX D LAND USE RESTRICTIONS
APPENDIX E SITE INSPECTION CHECKLIST
APPENDIX F EPA PRES S RELEASE/INTERVIEWS
APPENDIX G ARAR REVIEW
APPENDIX H REMEDIAL ACTION PROGRESS REPORT 2021
Appendix H contains Analytical summary tables for the following:
Table 11: Summarized Results of Groundwater -Volatile Organic Compounds 2021
Table 12: Summarized Results of Groundwater -Metals and Field Parameters 2021
Table 13: Summarized Results of Groundwater -Gross Beta and Tritium 2021
Table 14: Historical Summary of Groundwater Analytical Results (2002-2021)
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LIST OF ABBREVIATIONS AND ACRONYMS
BGS
Below Ground Surface
BRA
Baseline Risk Assessment
CERCLA
Comprehensive Environmental Response, Compensation, and Liability Act
CFR
Code of Federal Regulations
COC
Contaminant of Concern
DHHS
Department of Health and Human Services
1,2-DCP
1,2-Dichloropropane
DRW
Deep Recovery Well
1,2-EDB
1,2-Dibromoethane
EPA
Environmental Protection Agency
ESD
Explanation of Significant Difference
FS
Feasibility Study
FY
Fiscal Year
FYR
Five-Year Review
GWE
Groundwater Extraction
IC
Institutional Control
IUP
Industrial Use Permit
LLRW
Low Level Radioactive Waste
MCL
Maximum Contaminant Level
MW
Monitoring Well
NC 2L
North Carolina Groundwater Standard
NCDEQ
North Carolina Department of Environmental Quality
NCP
National Contingency Plan
NCSU
North Carolina State University
NPDES
National Pollutant Discharge Elimination System
NPL
National Priorities List
NS
Not Sampled
O&M
Operation and Maintenance
OU
Operable Unit
POTW
Publicly Owned Treatment Works
PPB
Part per billion (or ng/L)
PRP
Potentially Responsible Party
RAO
Remedial Action Objective
RI
Remedial Investigation
ROD
Record of Decision
RPM
Remedial Project Manager
RW
Recovery Well
1,1,2-TCA
1,1,2-Trichloroethane
TCE
Trichloroethene
Hg/L
Microgram per Liter (or ppb)
voc
Volatile Organic Compound
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I. INTRODUCTION
The purpose of a Five-Year Review (FYR) is to evaluate the implementation and performance of a
remedy to determine if the remedy is and will continue to be protective of human health and the
environment. The methods, findings and conclusions of reviews are documented in FYR reports such as
this one. In addition, FYR reports identify issues found during the review, if any, and document
recommendations to address them.
The U.S. Environmental Protection Agency is preparing this FYR pursuant to the Comprehensive
Environmental Response, Compensation, and Liability Act (CERCLA) Section 121, consistent with the
National Contingency Plan (NCP) (40 Code of Federal Regulations (CFR) Section 300.430(f)(4)(ii)) and
considering EPA policy.
This is the fifth FYR for the North Carolina State University (NCSU), Lot 86 Farm Unit #1 Site (NCSU
Site or Site), located on the NCSU campus in western Raleigh, Wake County, North Carolina (Figures 1
and 2). The triggering action for this statutory review is the completion date of the previous FYR. The
FYR has been prepared because hazardous substances, pollutants or contaminants remain at the Site
above levels that allow for unlimited use and unrestricted exposure (UU/UE). The Site consists of one
operable unit (OU), OlJ-1, which encompasses both the soil and groundwater remedies.
The EPA Remedial Project Manager (RPM) Hilary Thornton led the FYR. Participants included the
EPA Community Involvement Coordinator Angela Miller, North Carolina Department of Environmental
Quality (NCDEQ) Project Manager David Mattison, and NCDEQ FYR Preparer Stephanie Grubbs. The
relevant entities such as the potentially responsible parties (PRPs) were notified of the initiation of the
FYR. The review began on October 12, 2022.
Site Background
In 1969, North Carolina State University selected Lot 86, Farm Unit No. 1 as a burial site for hazardous
chemical waste and low-level radioactive waste (LLRW) generated in the University's education and
research laboratories. Chemical wastes were placed in trenches located in the northwest portion of the
Site. The trenches were approximately 8 feet deep and varied from 50 feet to 150 feet in length. The
University records show that 22 trenches, totaling approximately 2,000 linear feet were used. The types
of chemicals reported to have been buried at the Site include solvents, pesticides, inorganics, acids, and
bases. Although some of the liquid chemicals disposed during the initial Site operations were poured
into the trenches, both liquid and solid chemicals were generally buried in metal, glass, or
plastic containers.
Radiological wastes were buried in trenches in the eastern portion of the Site, similar to the other
trenches in the northwest portion of the property, approximately 6 feet deep and 50 to 150 feet in length.
Nine trenches were reportedly excavated and used for LLRW disposal. The NCSU Radiation Protection
Office maintains records concerning waste disposal in this area. These records indicate that the wastes
were properly disposed at the Site. Most of the LLRW is in solid form, primarily animal carcasses that
were not containerized. Radionuclides present in the waste indicate tritium, carbon-14, iron-59,
phosphorous-30, and phosphorous-32.
Site Setting
Currently the NCSU Site is a 1.5-acre plot of grassy land located on the NCSU campus in western
Raleigh, Wake County, North Carolina (Figures 1 and 2). The Site is located on and surrounded by
State-owned property; however, the Site remedial activities are maintained by NCSU. A six-foot gated
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chain-link fence topped with barbed wire surrounds the entire Site. A metal building, housing the Site
groundwater treatment system, is located inside the fenced enclosure. From 2007 to 2021, Carolina
Solar Energy leased the land from the State of North Carolina for a project in partnership with the
Department of Energy. The project consisted of ground mounted photovoltaic panels arranged in 12
solar arrays located on top of the capped and stabilized mound until removed in 2021.
Land surrounding the Site is home to NCSU's football stadium, Carter-Finley Stadium, and NCSU's
basketball and professional hockey facility, PNC Arena. Paved parking lots for Carter Finley Stadium
and PNC Arena are located south of the Site, and to the east is the NCSU football training facility.
Department of Health and Human Services facilities are located across the Wade Avenue Extension, a
highway connecting to Interstate-40, which borders the Site to the north. The closest residents and water
supply well is located approximately 2,000 feet southeast (and hydraulically upgradient) of the Site.
Appendix A lists the resources referenced during the development of this FYR report. Appendix B
provides a chronology of major site events. Appendix C includes Current Site Status information.
FIVE-YEAR REV IEW SUMMARY FORM
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Figure 1: Site Location Map
MIAIUKtAI Y FURKl
irtl£ftCKAI
NCSU - Lot 86
js cs i;
jt ir
il^^iurr,
Weslqr!
FIGURE 1
SITE LOCATION MAP
PIEDMONT
GEOLOGIC
0 1.000 2.000 3.000 4,000
Scale (feet)
NCSU - Lot 86
Raleigh, North Qirolin.ii
SMART EARTH SOLUTIONS
3
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Figure 2: Site Layout
4
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II. RESPONSE ACTION SUMMARY
Basis for Taking Action
Site wide Contaminants of Concern
The 1996 Record of Decision (ROD) identified the following contaminants of concern (COCs):
Groundwater
Acetone, Benzene, Brotnodichloromethane. Carbon Tetrachloride, Chloroform,
1,2-Dichloropropane, Methylene Chloride, Tetrachloroethene, Trichloroethene (TCE),
1,1,2-Trichloroethane (1,1,2-TCA), Arsenic, Manganese
Exposure Pathways
As stated in the 1996 ROD:
The NC State site has one primary media of concern, which is groundwater. The surface soils were
evaluated, and the resulting determination was that the surface soils posed no substantial risk to
human health or the environment. The sub-surface soils on the other hand were found to be a
continuing source of contamination to the groundwater and should be addressed. Actual or
threatened releases of hazardous substances from this Site via the groundwater if not addressed by
implementing the response action selected in this ROD, may present an imminent and substantial
endangerment to public health, welfare, or the environment.
Response Actions
Summary of Pre-ROD Activities
The Site was proposed for listing on the National Priorities List (NPL) on October 15, 1984, and placed
on the NPL on July 10, 1986. No removal or remediation occurred at the Site prior to the signing of the
1996 ROD, although environmental investigations had been ongoing at the Site since the early 1980s.
After the initial phase of the work identified the presence of impacted groundwater beneath the Site, 33
monitoring wells were advanced near the Site for the purpose of evaluating potential groundwater
impacts. A remedial investigation (RI) was completed in October 1994. A Baseline Risk Assessment
(BRA) for the Site was completed in March 1995. The BRA considered the Site risks associated with the
soils, groundwater, and the air pathways associated with soil and groundwater if no remediation were to
occur. The current visitor, student, and recreational person at the Site were assumed to be potentially
exposed to chemicals in the surface soil only. There were no current exposures to groundwater, therefore
groundwater risks were not evaluated under a current use scenario. The future use scenario considered
the possibility that future on-site or nearby residents were exposed to chemicals in the groundwater and
surface soils. Consumption of the water from the contaminated plume would result in an unacceptable
risk to human health and the environment.
After determining the nature and extent of contamination, a Feasibility Study (FS) was completed in
February 1996. As part of the effort, a Limited Site Assessment, Source Characterization,
additional soil samples, and soil vapor extraction test were conducted.
Remedial Action Objectives
The remedial action objectives (RAOs), as stated in the 1996 ROD are as follows:
Groundwater
Based on the results of the RI, the baseline risk assessment and considering the requirements for risk
reduction, risk-based remediation levels, and the ARARs, the remedial action objectives specifically
developed for groundwater at the Site are presented in Table 8-1 (table located in the 1996 ROD).
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The objectives in establishing the remediation levels were:
• Prevent migration of contaminants to surface water that would result in contamination to levels
greater that the Ambient Water Quality Criteria (AWQC).
• Control future releases of contaminants to ensure protection of human health and the
environment (SARA Section 121 [d]).
• Permanently and significantly reduce mobility, toxicity, or volume of characteristic hazardous-
waste with treatment (SARA Section-121 [d])
The final remediation levels were selected as the most conservative of the federal and state
chemical-specific ARARs, and if a standard did not exist, the risk-based goals were applied.
However, the average background concentration was selected as the remediation level if it exceeded
the most conservative level.
No RAOs were defined in the 1999 and 2014 Explanation of Significant Differences (ESD).
Remedy Components
1996 Record of Decision
The remedies set forth in the September 30, 1996, ROD provide for remediation of contaminated soil
and groundwater. The major components of the remedy as stated in the ROD include:
Soil Remediation
The soil component of the selected remedy will be in-situ mixing and encapsulation. The
contaminants in the trenches will be solidified in-situ, using a pozzolan-portland cement-based
formulation delivered to and dispersed within the soil column as a grout. The extent of
encapsulation will be better defined during, the remedial design process, however at a minimum
the encapsulation shall extend to encompass a two-foot radius around the confines of the
trenches. The Toxicity Characteristic Leaching Procedure (TCLP) (55 FR 1 1798, 1990) is to be
considered in the design of the soil encapsulation alternative.
Groundwater Remediation
Groundwater remediation will involve the extraction of the contaminated groundwater via
extraction wells. The extracted groundwater will be treated and discharged to either surface
water or the local POTW.
The treatment will consist of air stripping to remove volatile organics, and carbon adsorption to
remove organics. The groundwater system will operate 24 hours per day. System controls will
allow complete automatic operation with minimal operator attention. Long-term monitoring for
cleanup verification purposes and to track contaminant plume migration will be required. The
system is expected to operate 30 years; samples will be collected from existing wells on a semi-
annually basis for the first 5 years, and on an annual basis for the following 25 years.
The groundwater treatment system will also require monitoring and maintenance. Monitoring of
the treatment system will include periodic sampling of the influent and effluent from the
treatment system and analysis in accordance with the permit requirements.
Provisions for surface water sampling were not described in the ROD; however, groundwater
monitoring continues to indicate that the groundwater plume is under hydraulic containment and is not
projected to reach any surface water bodies.
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The Site's COCs and remediation goals for soil as stated in the ROD are listed below in Table 1.
Table 1: Groundwater Remediation Goals as Specified in the 1996 ROD
(fiOM!:!k\ iili.T
Ri:nu:di;;Sio!; f fo;:l
(ug/L)
ikisis ibi R'.-;mxlmiioii
Acetone
700
NC 2La
Benzene
1
NC 2L
Bromodichloromethane
1
CRQLb
Carbon Tetrachloride
1
CRQL
Chloroform
1
CRQL
1,2-Dichloropropane
1
CRQL
Methylene Chloride
5
NC 2L
T etrachl oroethene
1
CRQL
1,1,2-Trichloroethane
1
CRQL
Trichloroethene
2.8
NC 2L
Arsenic
10
CRQL
Manganese
370
Background Concentrationc
a NC 2L- North Carolina Groundwater Quality Standard (15NANC 02L)
b CRQL- Contract Required Quantitation Limit
0 Value is based on the background concentration
ug/L - parts per billion or micrograms per liter
1999 Explanation of Significant Difference
On July 21, 1999, an ESD was signed to modify the soil remedy at the Site. During implementation of
the soil RA, competent bedrock and other obstructions (debris and compressed gas cylinders) were
encountered at depths as shallow as three feet below ground surface (bgs). These obstructions caused
damage to the crane mounted auger-mixing unit and could potentially compromise the integrity of the
solidified grout/soil mixture. The ESD was issued to change the implementation of the technology. The
shallow depths of the bedrock outcroppings caused the use of the crane-mounted auger-mixing unit to be
ineffective; therefore, a track hoe was selected to replace the crane for mixing and stabilizing the
material. To address this change, the mixing and air monitoring procedures were revised. The primary
changes documented in the ESD were:
• Use of a track hoe in lieu of the crane for mixing operations. The trackhoe mixing process
allowed for visual inspection of the nature and extent of contamination as well as verification of
thorough homogeneous mixing.
• Mixing procedure revisions included the spraying of grout in the mixing area to suppress
potential vapor emissions and/or covering the emissions with surrounding soils.
• The soils were mixed in individual cells of four feet wide by twelve feet long by ten feet deep.
• Air monitoring procedure revisions included the collection of whole air samples on a daily basis
from no more than 50 feet downwind of the mixing area.
• Real-time fence line monitors were used to identify potential exposure to off-site receptors.
• Passive dosimeter badges were placed at five locations around the Site to monitor acute and
cumulative exposures over the duration of the project.
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2014 Explanation of Significant Difference
The ESD was signed on September 17, 2014. Institutional controls (ICs) in the form of a Declaration of
Perpetual Land Use Restrictions for a Federal Superfund Site were recorded on June 1, 2009, because
the remedial action results in hazardous substances, pollutants, or contaminants remaining at the Site
above levels that allow for unlimited use and unrestricted exposure to soils and groundwater. The
remedial action provided in the ROD does not include ICs. As a result, an ESD was needed to include
ICs to prevent disturbance of the soil, use of the groundwater, and inappropriate use of the Site that
could impact the remedy as part of the remedy for the Site.
Status of Implementation
Soil
In January 1999, contractors began in-situ mixing and encapsulation to address the waste material buried
in trenches, as well as soils surrounding the trenches, at the Site. Based on the Limited Site Assessment,
the northwest corner of the Site was suspected of having numerous drums. Disposal records and
practices suggested that drums were isolated and scattered throughout the Site. During the operation,
eight drum carcasses were unearthed and were placed in five 95-gallon overpack drums. The overpack
drums were removed and disposed off-Site.
Soil mixing began on January 19, 1999, using a crane-mounted, eight-foot diameter mixing auger. As
stated previously (in Section titled 1999 Explanation of Significant Difference), the crane mounted
mixing unit was abandoned and replaced by a trackhoe, which removed the top two feet of the soil from
each trench and then the excavated space was filled with cement. The cement and the underlying soil in
each trench was then mixed using a combination of digging and mixing motions to ensure that the soil
and cement material were thoroughly mixed. During implementation of the trackhoe mixing and
encapsulation process, releases of vapors to the atmosphere occurred in small vapor clouds, referred to
as "puff" releases. From March to August 1999 results of air-dispersion modeling of the puff releases
were submitted to and evaluated by the EPA. Based on the results of the modeling, which indicated no
off-site impacts above health-based criteria, the EP A approved the continued use of the trackhoe mixing
and encapsulation procedure. The change in the mixing methodology was addressed in the July 21, 1999,
ESD. The operation recommenced on August 27, 1999, and continued until the final day of mixing,
September 21, 1999.
During the remedial activities, a total of 1 13 samples of stabilized material were obtained to demonstrate
conformance with the performance standards established for the Site. Approximately 2,240 tons of
cement and approximately 743,000 gallons of water were used to stabilize almost 11,000 cubic yards of
waste material and impacted soil. To prevent extensive erosion, the Site was re-graded with no slope
exceeding a 4:1 ratio. The soil cover was crowned to deter infiltration and to direct runoff away from the
monolith. The Site was covered with one foot of clean soil and all disturbed areas were reseeded. Since
the source is immobilized and the encapsulation of the waste resulted in a relatively impervious concrete
cap over the Site, no further action is required to address this media.
Groundwater
The groundwater system remedial design began January 25, 1999, and was completed January 3, 2006.
Groundwater extraction (GWE) system wells and components installed near the right-of-way of Wade
Avenue Extension also required an encroachment permit before installation occurred. GWE system
installation occurred from April to September 2006. The GWE system installation is summarized
as follows:
• April-June 2006: shallow GWE recovery wells (RWs) RW-1 through RW-13 and deep GWE
wells (DRW) DWR-1 through DRW-4 were installed by air rotary drilling.
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• July-August 2006: foundation and building construction completed.
• August-September 2006: groundwater treatment system equipment installed in building.
Submersible pumps, electrical supply lines and groundwater effluent lines installed.
• Commercial operations of the GWE system began after the system inspection on
September 30, 2006.
From September 2006 through December 2006, the effluent was discharged to the City of Raleigh
sanitary sewer system to ensure that the effluent met the National Pollutant Discharge Elimination
System (NPDES) permit requirements. After December 2006, the treated water began discharging into
the surface water under the NPDES permit.
Between 2009 and 201 1, results of chronic toxicity testing failed to comply with the Site's NPDES
discharge permit and resulted in the GWE system shutting down in 2012 from January 25 to May 31.
Instead, a 21,000-gallon tank received recovered groundwater from the treatment system through a
temporary discharge line. The City of Raleigh issued a City of Raleigh Industrial User Pretreatment
(IIJP) permit in May 2012 allowing the discharge of treated groundwater from the temporary holding
tank to the City's sanitary sewer system. On June 1, 2012, the GWE system resumed operation and
treated groundwater was collected in a temporary holding tank for weekly discharge into the City of
Raleigh's sanitary sewer via a nearby manhole, as directed by the IIJP permit.
On May 28, 2013, NCSU received Permit NC0029033 from the City of Raleigh for the continuous
discharge of treated groundwater into the City's sanitary sewer system. The permit, which expired
May 27, 2023, was renewed through June 30, 2026.
Institutional Control Review
ICs are defined as non-engineered instruments, such as administrative and legal controls, that help
minimize the potential for human exposure to contamination and/or protect the integrity of the remedy.
A Declaration of Perpetual Land Use Restrictions at the NCSU Site was recorded in June 2009 on parcel
0784366890 (Appendix D). It outlines land use restrictions for the Site, which prevent disturbance of the
soil, use of the groundwater, and inappropriate use of the Site that could impact the remedy.
The groundwater plume, which extends under the adjacent highway (Wade Avenue Extension), does not
require ICs as this land is within the State of NC highway right of way. At this time, the plume is
contained and contaminated groundwater above the NC 2L groundwater standard does not extend
beyond Wade Avenue to the adjacent parcel. Therefore, no ICs are required for the parcel 07853 16741.
Table 2 includes a summary of implemented ICs. Figure 3 is the IC Overlay Map.
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Table 2: Summary of Implemented Institutional Controls
Media That
Do Not
Support
UU/UE Based
on Current
Conditions
ICs
Needed
ICs Called
for in the
Decision
Documents
Impacted
Parcel(s)
IC
Objective
Title of IC Instrument
Implemented and Date
(or planned)
OU-1
Soil
Yes
Yes
0784366890
Restrict land
use
Yes
06/01/2009
OU-1
Groundwater
Yes
Yes
0784366890
Restrict
consumption of
contaminated
groundwater
Yes
06/01/2009
2009 Declaration of
Perpetual Land Use
(0784366890)
On January 17, 2023, a letter was sent to the EPA verifying the Declaration of Perpetual Land Use
Restrictions at the Site are still recorded in the Office of Wake County Register of Deeds and that
the activities and conditions at the Site remain in compliance with the land use restrictions contained
in the document.
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Figure 3: IC Overlay Map
• -lioi "l:j,-K¥
Is'-i; 1 >\ Ngrntsii
! jpw North Carolina State University
^ >, 1-, • 1 (| Jr {Lot 88, Farm Unit #1} Sup erf una Site
' '' ' ' >i, ' •> • „ I'd,!, W t;rh " 4, • Iju ,
l I
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Systems Operations/Operation and Maintenance (O&M)
Piedmont Geologic has been tasked with the following responsibilities in accordance with the Operation
and Maintenance Plan: Groundwater Extraction System, dated August 21, 2014, prepared by Piedmont
Geologic. Routine O&M activities includes the following:
• Weekly system visits by the Operator in Responsible Charge or backup Operator in Responsible
Charge, to meet City of Raleigh IIJP permit requirements and maintain the Groundwater
Treatment System Log.
• Monthly sampling and analysis of GWE system effluent water (i.e., treated water) in accordance
with City of Raleigh Permit NC0029033.
• Monthly sampling and analysis of GWE system influent water (i.e., untreated water) for
evaluation of recovery system efficacy.
• Remote monitoring of the system operation and on-site response to system upset conditions.
• Routine maintenance such as replacement of system bag filters.
• Quarterly collection and evaluation of groundwater potentiometric surface data from Site
monitoring wells.
• Quarterly sampling and analysis of shallow GWE wells for gross beta activity and tritium.
As reported in the most recent Remedial Action Progress Report, January - December 2021 (submitted
February 2022), routine O&M activities were conducted to optimize system on-time and performance,
which included the following:
• Weekly, or as-needed, changing of 50-micron bag filters in each of the two bag filter canisters.
• As-needed cleaning of air-stripper sump sight tubes and skid #1 and #2 flow meters.
• Floor-sump pump cleaning and adjustments.
• Equipment lubricating.
• Bi-annual cleaning of the process water tank (PWT) interior.
• Annual replacement of effluent flow meter/totalizer (factory calibrated).
• Bio-dispersant injection system inspection/cleaning.
During the 2021 O&M monitoring period, a few minor GWE system down time events occurred.
• GWE-system downtime occurred in February 202 1 due to issues with the EOS ProControl unit's
ethernet communications module. The repaired EOS ProControl unit was reinstalled and the
GWE system was restarted on February 15, 2021.
• In late August 2021, a thunderstorm caused an electrical surge to the EOS ProControl unit,
damaging the unit. The EOS ProControl unit and main control panel fuse were replaced and the
GWE system was restarted on October 7, 2021.
• The submersible pump for RW-10 was found to be inoperable, due to damaged/seized impellors,
in November 2021 when conducting the quarterly monitoring-well gauging and GWE-system
recovery well sampling/analysis event. A replacement pump was procured and installed, and
recovery well RW-10 was restarted in December 2021.
The PRPs have informed the EP A and NCDEQ that the some of the groundwater pumps used on Site are
a model that is no longer manufactured or sold. The PRPs are proactively exploring options for
replacements as the pumps fail.
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The approximate annual O&M cost, as provided by the PRPs for the years 2018-2022:
Table 3: O&M Costs
OU-1
2018
$103,650
2019
$103,919
2020
$ 92,104
2021
$108,570
2022
$120,291
III. PROGRESS SINCE THE PREVIOUS REVIEW
This section includes the protectiveness determinations and statements from the 2018 FYR Report as
well as the 2018 FYR Report's recommendations and the status of those recommendations.
Table 4: Protectiveness Determinations/Statements from the 2018 FYR Report
on
Protectiveness
Determination
Protectiveness Statement
OU-1
Sitewide
Short-Term
Protective
OU-1 remains protective in the short-term. The completed OU-1 remedy
at the Site currently protects human health and the environment because
contaminated soils were remediated through stabilization/solidification,
groundwater contamination has been contained through extraction,
treatment and discharge to the city sewer, and institutional controls are in
place restricting access to contaminated groundwater and soils. Direct
exposure to groundwater is not an issue due to these implemented
institutional controls, which prohibits the use of groundwater for potable
and irrigational uses. At this time, the plume is contained and
contaminated groundwater above the NC 2L groundwater standards does
not extend beyond Wade Avenue to the adjacent parcel. However, a
review of the remediation goals and COCs will need to be undertaken
before the Site can be closed out with the State of North Carolina's
concurrence.
The 2018 FYR Report did not identify issues and recommendations for OU-1 (Sitewide), although the
issues and recommendations recorded in the Other Findings Section of the 2018 FYR Report should
have been included in Section I '/-Issues and Recommendation and correctly summarized in Section VII-
Protectiveness Statement of the 2018 FYR Report. The issues and recommendations recorded in the
Other Findings Section of the 2018 FYR Report are as follows:
• The NC 2L groundwater standards, on which several of the remediation goals are based, were
amended on June 1, 2013. Several ROD designated COCs currently have NC 2L standards more
stringent than the ROD remediation goals. Direct exposure to groundwater is not an issue due to
implemented ICs, which prohibits the use of groundwater for potable and irrigational uses. At
this time, the plume is contained and contaminated groundwater above the NC 2L groundwater
standards does not extend beyond Wade Avenue to the adjacent parcel. However, a review of
these remediation goals will need to be undertaken before the Site can be closed out with the
State of North Carolina's concurrence.
• In addition to the ROD specified COCs, eight organic and three inorganic non-ROD specified
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compounds were detected in 2018 above the NC 2L groundwater standards. These 11
compounds not designated in the ROD should continue to be analyzed and reported annually
and if needed, add these compounds as COCs with a decision document.
Progress Since Last FYR
Activity since the previous FYR,
• In June 2018, additional monitoring wells were installed. One intermediate monitoring well
(MW-13I) was coupled with existing shallow and deep monitoring wells MW-13S and MW-13D
in the western portion of the Site, and a second intermediate monitoring well (MW-47I ) was
coupled with existing deep monitoring well MW-47D in the southern portion of the Site. One
deep monitoring well (MW-45D) was also coupled with existing shallow monitoring well
MW-45R in the northern portion of the Site.
• In early 2020, it was reported that MW-46 was severely damaged "apparently due to a collision
with grass-cutting equipment, between the May and August 2019 gauging events". It was also
noted that MW-46 is located in the NCDOT right-of-way on the south side of the DHHS facility,
adjacent to Wade Avenue. On March 24, 2023, MW-46 was abandoned as authorized by the
EPA and NCDEQ.
• The owners of the solar field have terminated the lease in April 2021. All panels and ancillary
equipment were removed.
• In August 2022, a Workplan for Soil Vacuum Extraction Pilot Test was completed by Piedmont
Geologic for NCSU to perform a soil vacuum extraction (SVE) pilot test. The workplan states,
SVE is being evaluated as an additional component of the overall groundwater remediation
approach for the Site, currently being addressed through groundwater extraction and treatment
(GWE). The addition of an SVE system, to be coupled with the existing GWE system, if
feasible, is expected to substantially reduce the overall time necessary to reduce Site
groundwater volatile organic compound (VOC) concentrations to acceptable regulatory levels
and, accordingly, reduce the overall, lifecycle, cost of Site remediation compared to relying on
GWE alone.
• The November-December 2022 Lot 86 pilot test effort included the installation of the middle
SVE well. The well was installed using a Ditch Witch 1220 horizontal drilling rig, which utilizes
rotary fluid drilling. The objectives of the SVE pilot test were to 1) verify effectiveness of the
SVE well screens with respect to the site target soil formation (i.e., that detrimental screen
clogging does not occur); 2) evaluate vacuum blower requirements for the full-scale system; and
3) evaluate mass removal of VOCs and resulting effluent-air treatment and/or regulatory
permitting requirements. The overall goal of the pilot test was to evaluate the effectiveness of
SVE as an additional site remedial measure and, if deemed effective, to establish SVE-system
operational parameters to be used for design of a full-scale site SVE system. With respect to the
overall goals and objectives of the SVE pilot test and related efforts, it was concluded that SVE
is an effective site VOC-remediation strategy that may be seamlessly coupled with the existing
GWE and Treatment system operation, and that such SVE-system operation may be expected
to reduce the overall time for achievement of site groundwater remediation goals by years, or
even decades.
• An Addendum to the Soil Vapor Extraction Pilot Test Report and Remedial Action Workplan
Addendum was submitted to the EPA and NCDEQ on February 1, 2023, and approved by the
EPA on February 22, 2023. Two additional horizontal wells were installed in April 2023 and the
remaining SVE system components are currently under construction.
14
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IV. FIVE-YEAR REVIEW PROCESS
Community Notification. Community Involvement and Site Interviews
On October 19, 2022, the EPA issued a press release, which announced that comprehensive reviews will
be conducted of completed cleanup work at NPL Superfund sites in the Southeast, including the NCSU
(Lot 86, Farm Unit #1) Site. Appendix F contains a copy of the EP A News Release. A copy of the FYR
report will be made available on the EPA website: https://www.epa.gov/superfund/search-superfund-
five-vear-revi ews.
NCDEQ RPM, David Mattison, was interviewed as part of this FYR regarding the activities and
implementation of the remedial actions at the Site. Only a summary of the interview is detailed below.
For the complete interview statement see Appendix F.
Mr. Mattison indicated that the overall impression of the project is that contaminated soils were
treated with in-situ soil stabilization/solidification (1SS). Contaminated groundwater is contained by
the groundwater extraction and treatment system. Institutional controls are fully implemented and
are adequate for long-term protectiveness. The remedy is currently effective and functioning as
designed. However, in order to accelerate the timeframe for cleanup, with the support and approval
of the regulatory agencies, the PRP has performed a SVE pilot test to evaluate the efficacy of
implementing a SVE system to extract and treat contaminated vadose soils beneath the soils treated
by ISS and overlying contaminated groundwater. The results of the SVE pilot test will be evaluated
and a full-scale system design will be submitted for regulatory review and approval.
Data Review
The GWE system for remediation of dissolved-phase groundwater COCs was started at the Site in
September 2006. Since the startup, the system has been in operation for 101,009 hours (approximately
76%). The total volume of groundwater recovered since system startup is 27,539,918 gallons and the
estimated mass of dissolved-phase VOCs extracted since system startup is approximately 3,266 pounds.
Effluent/Influent
Monthly sampling and laboratory analysis of groundwater treatment system effluent groundwater is
conducted in accordance with the requirements of the City of Raleigh IIJP. The GWE system effluent
groundwater analysis results are in compliance with requirements of the IIJP as stated in the Remedial
Action Progress Report.
GWE system effluent monitoring and performance requirements for the IIJP are listed as follows in
Table 5. GWE system influent groundwater (i.e., untreated water) samples are collected on a monthly
basis in conjunction with the effluent groundwater sampling. Potentiometric surface data evaluations
and GWE-system recovery well sampling is conducted quarterly. Site groundwater is sampled
annually as specified in the site Quality Assurance Project Plan as well as new site monitoring wells
installed in June 2018.
15
-------
Table 5: GWE System Effluent Groundwater Analyses and Discharge Limitations, City of Raleigh
Industrial User Pretreatment Permit (Remedial Action Progress Report January-December 2021)
Paiiimeter
Discharge Limits
Monitoring Requirements
Monthly Avei age
D.iih Maximum
FrequeiKv
Sample Tv|>e
Flow
-
continuous
icccidmg
pH
-
each discharge
event
grab
Mertt«Y (low level)
__
„
1 '3 mouths
grab
Arsenic
_
__
1 3 months
sob
Copper
...
—
1 • Jinonths
grab
Iron
__
__
1 3months
erab
Lead
—
~
1 3 months
erab
Zinc
...
__
1 '3months
erab
Manganese
_
1 '3 months
erab
Molvbdeman
....
—
1 6months
crab
Selenium
l/6months
grab
Silver
....
1 6months
grab
Cadmium
__
__
1 Cimonths
crab
C hromiiaa
...
—
1 Omonths
crab
Nickel
...
—
1 6months
crab
Benzene
....
__
1/month
crab
C arbon Tetrachloroethene
...
1 month
crab
Toluene
—
1-month
crab
1.1.2.2 -T etrachloroethane
__
1 monrh
crab
Tnchl oro ef bene
...
__
1/month
crab
C liloroform
__
1/month
crab
1.2-Dibromoethane
__
1 month
gob
1.2-Dichlcro prop ane
....
__
1 -month
crab
T etrachlor oetliene
..
1 'month
crab
1.4-Dioxane
...
__
I/month
crab
Tritium
...
__
l/3months
grab
Gross beta activity
__
l/3months
grab
Groundwater Sampling
The annual Site groundwater sampling program includes the following 38 monitoring wells:
MW-2, MW-3, MW-6, MW-8, MW-11S, MW-11I, MW-12S, MW-12I, MW-12D, MW-13I,
MW-13DR, MW-15, MW-16SR, MW-16I, MW-16D, MW-17S, MW-17I, MW-17D, MW-27,
MW-34DR, MW-35S, MW-35D, MW-36S, MW-36D, MW-37, MW-38, MW-41S, MW-41I,
MW-41D, MW-42S, MW-42I, MW-43S, MW-43D, MW-45SR, MW-45D, MW-46, MW-47I,
and MW-47D.
Figures 2 and 4 depict a Site Map with monitoring well locations. Figure 4 is a Generalized
Groundwater Extraction System Layout map.
16
-------
-------
The conclusions from the 2021 Remedial Action Progress report states,
• Pumping of site GWE wells results in a groundwater capture zone in the shallow aquifer zone
that encapsulates the fully delineated extents of groundwater COC distributions in these
aquifer zones.
• Statistically increasing trends in groundwater COC concentrations over time are discerned
through Mann-Kendall statistical analysis for several shallow, intermediate, and deep aquifer
zone monitoring wells. The subject wells are located immediately adjacent to the closed site
waste impoundment and/or in the downgradient direction of groundwater flow from the
impoundment, within the delineated groundwater capture zone created through GWE
system operation.
• The statistically increasing trends in groundwater COC concentrations for some site
monitoring wells are considered a reflection of continuing contaminant source contributions
from the closed site waste impoundment. A feasibility study is currently being completed to
evaluate the addition of SVE into the site remedial approach to augment the reduction of
source area COC concentrations. Figure 5 below highlights the MWs with statistically
increasing COC concentrations.
A copy of the complete 2021 Remedial Action Progress Report can be found in Appendix H. Included in
Appendix H, summary Tables 11-13 for VOCs, metals/field parameters, and gross beta/tritium,
respectively, in groundwater samples collected in August 2021. In addition, the 2021 Remedial Action
Progress Report (Appendix H, Table 14) contains a summary of all historical groundwater monitoring
well sampling data from 2002-2021.
Eight organic and three inorganic n on-ROD specified compounds were detected in 2021 above the
NC 2L groundwater standard. Table 6 lists the contaminants not designated as COCs in the ROD, the
well and concentration in which the compound was detected at the highest concentration, and the NC 2L
groundwater standard.
18
-------
Figure 5: Site Monitoring Wells with Statistical Increase in COC Concentrations
Over Time
MMVMSC
n
Uiidraiki(»d Ptupfcflp
V.V
fcftVlSS# £Mn7D
M&1£ .. •»«WI?6
Si
uw%
e*».i
G>«,
WWtfO
JUfAl2£ •
¦J™ Ift*l28*
I, IAMB) WtvCe
\
\
Highlighted wells have statistically increasing
groundwater COC! concentrations over time.
LEGEND
WW33 ,.
WAftiM But*! Aim
l&sjyoi Aiaai
Eils ¦ d 'MsaM Alan
A PIEDMONT
W GEOLOGIC
*W SMAIT MOT SJ3lLHC«i
MUMS
a-J'Hh
«
»¦ UMtrrp tr\»U* wrti rZatatctf >
Ixitarj COC uonc**efeera Cww Yin*
!»*<•*»
«
¦+3-9i C«U m £Ma LPwnrty
IBM
i^Q
L=tae
Kaagh Scrt- Jwo-ro
a
19
-------
Table 6: Contaminants Not Designated in the ROD and the Highest Concentration
Detected during August 2021 Sampling Event
k oi!i::mh;;;nis no!
ck sk:n;;k-d ;;s <. fM sin
the ROD
NC 2L
\i\V in uMidi !!h:
'.ompoLind doicckxi
;H ihsj highest
i.'OilO,'ill !Tu i Oil
i iiuheSl ( 0jk:0:!!;u!0!;
¦ lie ¦.¦oinpouiKi u;;s
liueaed in 2*0 1
VI
DCs (jig/L)
1,2-Dichlorobenzene
20
MW37
225 (.ig/L
l,2-Dibromo-3-
chloropropane
0.04
MW2
20,100 (.ig/L
1,2-Dibromoethane
0.02
MW3
6,490 (.ig/L
1,2-Dichloroethane
0.4
MW37
174 (ig/L
1,1,2,2-tetrachloroethane
0.2
MW12S
741 (ig/L
1,2,3-Trichloropropane
400
MW12S
722 (ig/L
1,4-Dioxane
3
MW121
9,780 |ig/L
Inorganics (ng/L)
Cadmium
2
MW12S
4 (ig/L
Chromium
10
MW411
40.6 (ig/L
Mercury
1
MW2
0.96 |ig/L
Ug/L - microgram per liter
Site Inspection
A Site inspection was conducted on December 7, 2022. The completed the Site inspection checklist can
be found in Appendix E. In attendance were Hilary Thornton and Jim Ferreira (US EPA),
David Mattison (NCDEQ), Karen Trimberger (NCSU), and Pete Dressel (Piedmont Geologic).
It was noted during the inspection that the groundwater extraction pumps and control panel were
operating properly and in good condition. The treatment train (air stripper, bag filters, and additives
[iron-reducing biocide]) were functioning and in good condition. Monitoring wells (MWs) were located,
properly secured/locked, in relatively good condition and routinely sampled. Monitoring data is
routinely submitted on time and of acceptable quality. However, it was discussed at the Site Inspection
that the manufacturer of the groundwater extraction pumps has discontinued the model of groundwater
extraction pumps currently used at the Site and spare parts have become difficult to procure. The PRP
contractor has been able to maintain the current extraction system but indicated that decisions regarding
the procurement of new pumps or the adj ustm ent/opti m i zati on of the groundwater extraction system will
need to be made over the upcoming five years.
During the inspection of the landfill, slight erosion of the vegetative cover in three areas was observed
on top of the cap. The erosion/soil disturbance appears to be related to the removal of the solar array.
The PRP contractor will repair and reseed the eroded areas.
No issues were identified regarding the implementation and scope of O&M procedures as they relate to
the current and long-term protectiveness of the remedy. Optimization in operation of the remedy and
monitoring tasks were discussed but no current issues were identified.
20
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V. TECHNICAL ASSESSMENT
QUESTION A: Is the remedy functioning as intended by the decision documents?
The remedial action continues to operate as designed. The EPA and NCDEQ have determined that all
the remedial action construction activities were performed according to specifications and the remedial
action continues to function as intended by the decision documents. Currently, no human exposure
pathways exist to contaminated soil or groundwater. Contaminated soils were remediated through
stabi 1 ization/solidification and groundwater contamination is actively being remediated through
extraction, treatment, and discharge to the Raleigh POTW.
Institutional Controls
A Declaration of Perpetual Land Use Restrictions at the NCSU Site was recorded in June 2009 on parcel
0784366890 (Appendix D). It outlines land use restrictions for the Site, which prevent disturbance of the
soil, use of the groundwater, and inappropriate use of the Site that could impact the remedy. The
groundwater plume, which extends under the adjacent highway (Wade Avenue Extension), does not
require ICs as this land is within the State of NC highway right of way. At this time, the plume is
contained and contaminated groundwater above the NC 2L groundwater standard does not extend
beyond Wade Avenue to the adjacent parcel. Therefore, no ICs are required for parcel 07853 16741.
QUESTION B: Are the exposure assumptions, toxicity data, cleanup levels and RAOs
USED AT THE TIME OF THE REMEDY SELECTION STILL VALID?
The groundwater exposure assumptions, toxicity data, clean-up levels and RAOs used at the time of the
remedy are still valid except for the remediation goal set for 1,1,2-trichloroethane and arsenic. The
analysis in Appendix G indicates that the groundwater remediation goal for arsenic exceeds a cancer risk
of lxlO"4, and the remediation goals for 1,1,2-trichloroethane and arsenic exceed the noncancer HQ of 1.
None of the remaining cleanup goals resulted in a cancer risk greater than lxlO"4 for carcinogens or a
noncancer HQ of greater than 1, and therefore remain protective of human health.
The NC Classifications and Water Quality Standards Applicable to the Groundwater of North Carolina,
NCAC Title 15 A Subchapter 2L, on which several of the remedial goals are based were last amended in
April 2022. CERCLA requires that the remedy comply with any standard, requirement, criteria, or
limitation under any Federal environmental law (such as Federal MCLs here), as well as any
promulgated State standard that is more stringent than any federal standard.
Vapor Intrusion
Indoor air concentrations were calculated from groundwater remediation levels for the ten volatile
chemicals of concern. The analysis in Appendix G indicates that none of the cleanup goals resulted in a
cancer risk greater than lxl0"4 for carcinogens or a noncancer HQ of greater than 1, and therefore
remain protective of human health. There are currently no on-Site buildings, except for the treatment
building, in regard to an on-Site VI pathway.
QUESTION C: H as any other information come to light that could call into question
THE PROTECTIVENESS OF THE REMEDY?
No additional information has come to light since the previous FYR that calls into question the
protectiveness of the remedy.
21
-------
VI. ISSUES/RECOMMENDATIONS
Issues/Recommendations
OlJ(s) without Issues/Recommendations Identified in the FYR:
None
OU(s):
OU-1 (Sitewide)
Issue Category: Monitoring
Issue: NC 2L Groundwater Standards have been amended and are currently
more stringent than several of the ROD cleanup levels.
Recommendation: Evaluate the ARARS to determine if modifications to the
decision document will be needed.
Affect Current
Protectiveness
Affect Future
Protectiveness
Party
Responsible
Oversight Party
Milestone Date
No
Yes
EPA/State
EPA
9/30/2024
OTHER FINDINGS
These additional findings do not rise to the level of an issue; however, these findings need to be
evaluated and/or addressed.
• In addition to the ROD specified COCs, seven organic and three inorganic n on-ROD specified
compounds were detected in 2021 above the NC 2L groundwater standards. These compounds
not designated in the ROD should continue to be analyzed and reported annually and if needed,
add these compounds as COCs with a decision document.
• During the FYR Site visit and inspection of the landfill, slight erosion of the vegetative cover in
three areas were observed on top of the cap. The erosion/soil disturbance appears to be related to
the removal of the solar array. The PRP contractor will repair and reseed the eroded areas.
22
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VII. PROTECTIVENESS STATEMENT
I'roleclneness Statements
Operable Unit: Protectiveness Determination: Addendum Due Date:
OlJ-1 (Sitewide) Short-term Protective NA
0U-1 remains protective in the short-term. The completed OU-1 remedy at the Site currently protects
human health and the environment because contaminated soils were remediated through
stabi 1 ization/solidification. The groundwater contamination has been contained through extraction,
treatment, and discharge to the city sewer. Institutional controls are in place restricting access to
contaminated groundwater and soils. Direct exposure to groundwater is not an issue due to these
implemented institutional controls, which prohibits the use of groundwater for potable and
irrigational uses. Currently, the plume is contained and contaminated groundwater above the NC 2L
groundwater standards does not extend beyond Wade Avenue to the adjacent parcel. However, for
the remedy to be protective in the long-term, the following action is needed: Evaluation of ARARS
(specifically the NC 2L Groundwater Standards) to determine if modifications to the decision
document will be needed.
Sitewide I'roleclneness Statement
Protectiveness Determination: Short-term Protective
The remedy at the Site currently protects human health and the environment because contaminated
soils were remediated through stabi 1 izati on/sol i di fi cati on, groundwater contamination has been
contained through extraction, treatment and discharge to the city sewer, and institutional controls are
in place restricting access to contaminated groundwater and soils. Currently, the plume is contained
and contaminated groundwater above the NC 2L groundwater standards does not extend beyond
Wade Avenue to the adjacent parcel. However, an evaluation of ARARS (specifically the NC 2L
Groundwater Standards) to determine if modifications to the decision document will be needed.
VIII. NEXT REVIEW
The next FYR Report for the North Carolina State University (Lot 86 Farm Unit #1) Superfund Site is
required five years from the completion date of this review.
23
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APPENDIX A
REFERENCE LIST
US Environmental Protection Agency, Region IV. September 30, 1996. Record of Decision, NCSIJ Lot
86 Superfund Site, Raleigh, North Carolina.
North Carolina Department of Environment and Natural Resources. September 25, 2008. Second Five-
Year Review Report. NCSU Lot 86 Superfund Site, Raleigh, North Carolina.
Piedmont Geologic, P C. September 24, 2007. Remedial Action Report. NCSU Lot 86 Superfund Site,
Raleigh, North Carolina.
US Environmental Protection Agency, Region IV. September 17, 2014. Explanation of Significant
Difference, NCSU Lot 86 Superfund Site, Raleigh, North Carolina.
Piedmont Geologic, P C. February 17, 2014. Remedial Action Progress Report January through
December 2013. NCSU Lot 86 Superfund Site, Raleigh, North Carolina.
Piedmont Geologic, P C. February 17, 2014. Remedial Action Progress Report January through
December 2013. NCSU Lot 86 Superfund Site, Raleigh, North Carolina.
Piedmont Geologic, P C. March 23, 2015. Remedial Action Progress Report January through
December 2014. NCSU Lot 86 Superfund Site, Raleigh, North Carolina.
Piedmont Geologic, P C. March 2, 2016. Remedial Action Progress Report January through
December 2015. NCSU Lot 86 Superfund Site, Raleigh, North Carolina.
Piedmont Geologic, P C. February 22, 2017. Remedial Action Progress Report January through
December 2016. NCSU Lot 86 Superfund Site, Raleigh, North Carolina.
Piedmont Geologic, P C. January 29, 2018. Remedial Action Progress Report January through
December 2017. NCSU Lot 86 Superfund Site, Raleigh, North Carolina.
North Carolina Department of Environmental Quality. September 26, 2018. Fourth Five-Year Review
Report. NCSU Lot 86 Superfund Site, Raleigh, North Carolina.
Piedmont Geologic, P C. January 3 1, 2020. Remedial Action Progress Report January through
December 2019. NCSU Lot 86 Superfund Site, Raleigh, North Carolina.
Piedmont Geologic, P C. January 7, 2021. Remedial Action Progress Report January through
December 2020. NCSU Lot 86 Superfund Site, Raleigh, North Carolina.
Piedmont Geologic, P C. February 24, 2022. Remedial Action Progress Report January through
December 2021. NCSU Lot 86 Superfund Site, Raleigh, North Carolina.
Piedmont Geologic, P C. March 25, 2022. Workplan for Soil Vacuum Extraction Feasibility Evaluation:
Step 2. NCSU Lot 86 Superfund Site, Raleigh, North Carolina.
A-l
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APPENDIX B
SITE CHRONOLOGY
i. '\
NCSU uses Lot 86 as a burial site for hazardous chemical and low-level
radioactive waste generated by the University's laboratories.
1969 to Nov 1980
NCSU reports on the CERCLA Section 103© Hazardous Waste Notification
form of waste disposal.
June 8, 1981
Final listing on National Priorities List (NPL)
June 10, 1986
Remedial Investigation (RI) Report completed
Oct 1994
Revised Feasibility Study (FS) completed
Feb 1996
ROD selecting the remedy is signed
Sept 30, 1996
Start of on-site mobilization for initiation of soil mixing activities
Nov 9, 1998
Consent Decree finalizing settlement for responsible party performance
of remedy
Nov 13, 1998
Final Remedial Action Work Plan approved by EPA
Dec 30, 1998
Start of Remedial Action
Jan 19, 1999
Explanation of Significant Difference (ESD) issued by the US EPA to
address the use of a trackhoe in lieu of a crane for mixing operations and
air monitoring.
July 21, 1999
Remedial action for soil is completed
Sept 21, 1999
Evaluation of Monitored Natural Attenuation Report completed by
GEL Consultants
March 2001
First Five-Year Review completed
Sept 25, 2003
Fractured Rock Assessment completed by East Coast Environmental
April 2004
Draft Remedial Action Work Plan for Groundwater completed
Nov 2005
Final Design Criteria Report for the Groundwater Remediation Phase is
completed by Marshall Miller & Associates
March 2006
Groundwater Extraction GWE wells installed by air rotary drilling.
April through Nov 2006
Groundwater treatment system equipment installed in building and submersible
pumps, electrical supply lines, and groundwater effluent lines installed.
Aug through Sept 2006
Groundwater Extraction system start-up.
Sept 26, 2006
Monthly NPDES monitoring begins on Site.
Aug 2007
PRP completed remedial action
Sept 20, 2007
Second Five Year Review Completed
Sept 26, 2008
Land Use Restriction filed with Wake County
June 1,2009
Discovery of Tritium and sampling results submitted
Feb 27, 2013
City of Raleigh Industrial User Pretreatment Permit issued
May 28, 2013
Installation of replacement well MW-45R
Feb 2014
Groundwater Sampling Quality Assurance Plan/Sampling and Analysis
Plans submitted
June 3, 2014
Explanation of Significant Differences
Sept 2, 2014
B-l
-------
i'\ (.'ill
Date
2014 Annual Compliance Statement - Declaration ot Perpetual Land
Use Restrictions
Sept 17, 2014
US EPA Approval - Revised Work Plan for Monitoring Well Installations,
Repairs, and Abandonments
Jan 24, 2018
Additional MWs installed
June 2018
Third Five-Year Review completed
Sept 26, 2018
Damage of MW-46 by NCDOT during movving/maintenance activities
Early 2020
The owners of the solar field have terminated the lease in April 2021. All
panels and ancillary equipment were removed
April 2021
Workplan for Soil Vacuum Extraction Pilot Test was completed by Piedmont
Geologic for NCSU to perform a soil vacuum extraction pilot test.
Aug 2022
B-2
-------
APPENDIX C
CURRENT SITE STATUS
[
K11 v i roil in en 1211 I ml iesi 1 ors
- Current human exposures at the Site are under control.
- Current groundwater migration is under control.
Arc Necessary Inslilnlion;il C ontrols in Place.
1^1 All O Some Q None
A Declaration of Perpetual Land Use Restrictions at the NCSU Site was recorded in June 2009
on parcel 0784366890. It outlines land use restrictions for the Site, which prevent disturbance
of the soil, use of the groundwater, and inappropriate use of the Site that could impact the
remedy.
The groundwater plume, which extends under the adjacent highway (Wade Avenue Extension),
does not require ICs as this land is within the State of NC highway right of way. At this time,
the plume is contained and contaminated groundwater above the NC 2L groundwater standard
does not extend beyond Wade Avenue to the adjacent parcel. Therefore, no ICs are requiredfor
the parcel 0785316741.
I his KPA Designated (lie Silo sis Silcwklc Ucady lor Anticipated I so?
| ^ Yes ~ No
I his (lie Silo Keen Put into Ueuse.
XI Yes ~ No
C-l
-------
APPENDIX D
DECLARATION OF PERPETUAL LAND USE RESTRICTIONS
IHIIilflllll!
IIAKt COUKTY. NC 5«S
LAURA n RIDI1CK
RECISTCft OF IEE»S
PRESENTED 8 RECORDED OK
if/t1/2ISB9 AT 15:09:48
1§«sM35S1 PACE:09813 - itiif
team to- Tefoa L, White, towel* rPun,fl NC Sate Unlvaai}', Campus Bo* 700S. RsWfil, NC37WJMWW
DECLARATION Of PERPETUAL LAND USE RESTRICTIONS FOR A FEDERAL
SUPERFUND SITE
For Property Owned By: STATE OF NORTH CAROLINA
Nwth Caro&ui State Itolwwlty Lot M S«perf«i»i4 She, Wake County, Wtrtl Carotin*
The real properly which is the subject of tills. Declaration of Peipetual Land Use Restrictions
("Declaration") is contaminated with hazardous substances, pollutants, of ©efUatmijaols end is n
Superfimd Site (hereinafter referred to « the "Site") as defined under the Comprehensive
Environmental Response, Compensation and Liability Act, as amended ("€ERCLA/SARA"'J, 42
U.S.C. f 9601 #1 stqand «act fix* fa the Conaent Deew filed in civil action no. 5;i>8-€V-893-
1302 in the United State District Court for the Eastern District of North Carolina, entitled "United
States of America, Plaintiff) v. North Carolina State University at Raleigh, Defendant," This
Declaration is part of a Remedial Action Plan for the Site tilt is identified in the Fedeiml Record of
Decision and any amendments thereto ("ROD") for the Site ami that has been approved by the
Secretary of the North Carolina Department of Environment and Natural Reaources (or its successor
in function), or his/her delegate, as authorized by N C O S. Section 143B-279.9. The North
CaroliiH Department of Environment and Natural Resources shall faxatsifler be rcfcnwl to as
"DENR-
The State of North Carolina, c/o State Property Office, Raleigh, NC, is Ike owner in fee
simple of the Site, wMeli is located, in the Comity of Wake, City of Raleigh, State of North Carolina,
and is described la Exhibit A. The Site is a portion of the real property legally described in Deed
Book 833 Page 357 in the Office of the Register of Deeds for Wake County, The Site is also shown
on a Notice of Contaminated Site, incorporated by reference into this Dwlatrstion, constituting a
survey plat, which is coactinendy being recorded 'with this Declaration in the Office of the Register
of Deeds for Wake County at Map look Psirfy Page (a1^? An unrecorded copy of said
survey plat is attached hereto as Exhibit B.
For the purpose of protecting public health and the environment, the State of North Carolina
hereby declare* that all of the Sic stall be held, sold and conveyed subject to tie following perpetual
land use restrictions, which shall tun with the land; shall be binding oil all panics baring ay right,
1
D-l
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llililffiiitu
title or interest in the Site or any part thereof, their beirs, successors and assigns; and shall, as
provided in N.C.G.S. Section 143B-279.9 be inf«reeatsl« without regard to lack of privity of estate or
contact, lack of benefit to particular land,«Jack of any property interest in particular hud. These
rotridions shall continue in perpetuity and cannot be anieodtod or canceled unless and until the
Wake County Registrar of Deeds receives and records the written concurrence of the Secretary of
DENR (or its successor in function), or his/her delegate. If any provision of this Declaration is found
to be unenforceable in any respect, the validity,. legality, and enforceability of the remaining
provisions shall not in my way be affected or impaired.
It is the intention of the Stale of North Carolina and DENR that, to the extent allowed. % law,
the United States Environmental Protection Agency, Region 4 (USEPA), is a third party beneficiaiy
of the Deciaration, and, as such, has the authority to enforce these restrictions, to lie extent such
enforcement is allowed by law. It is expressly sgpueil that USEPA is not the recipient of a real
property interest 'under litis Declaration,,.
mmEMmJJimmEMSmtmam
1, Hie Site shall be maintained in a passed condition. Site maintenance shall be inch as to
preclude tie growth of woody plant specie (i.e., trees or bushes).
2, Activities necessaij te maintain the Site security and structural integrity of lie landfill at the
Site are pennitted-
3, Except as approval in writing by DENE or its successor in function, all afar uses of the Site
are prohibited, specifically including, but not limited to, the following:
a He Site may NOT be used or developed for child care center*, schools, parks or
recreational activities, including athletic activities, agricultural or grazing purposes or for
timber production, kennels, animal peas, or for riding clubs.
b. NO alteration, disturbance or removal of the soil, landscape and contours shall
occur other than erosion control measures without written approval of DENR or its
successor in function.
c. NO surface or on(faip»Mi«i water stall be used for any purpose. The installation of
gnnind water wells or other devices for access to groundwater for any purpose other than
monitoring groundwater quality is prohibited without prior approval by DENE, or its
successor in functkm-
d. NO groundwater beneath the Site shall be used as a source of potable or irrigation water.
The installation of groundwater wells or other devices for access to groundwater for any
jwipose other than monitoring groundwater quality is prohibited without prior approval
by DENR, or its successor in function.
2
D-2
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IttlllllWill
e. He Site shall NOT be used for mining, extraction of coal, oil, gas or any other minetaU
or non-mineral substances.
f. NO surface or subsurface native or fill earthen materials may be removed from the Site
without the written permission of DESK or its successor in Inaction,
4, She security shall be maintained to effectively protect the Site from public access. Site
access shall be controlled by the owner or owner's representative. All routine and special
access to the Site shall be through the owner or the owner's representative. Site access for
other than Site maintenance activities, shall be approved in advance by DENR, or its
successor in function.
5, The owner of any portion of the Site shall submit a letter report, containing the notarized
signature of the owner, in January of each yw on or before January 31", to DENR and
USEPA, or their successors in function, confirming that this Declaration is still recorded in
the Office of the Wake County Register of Deeds and that activities and conditions at the Site
remain in compliance with the land use restrictions herein.
6. No person conducting environmental assessment or remediation at the Site, or involved in
deicmiining compliance with applicable land use restrictions, at the direction of. or pursuant
to a permit or order issued by, tie USEPA, DENE or its successor in function may be denied
access to the Site for the purpose of conducting such activities.
7. The owner of any portion of the Site shall cause any lease, grant, or other transfer of any
interest in the property to include a provision expressly requiring the lessee, grantee, or
transferee to comply with this Declaration. IT* failure to include such prevision shall not
affect the validity or applicability of any land use restriction in this Declaration.
REPMSEWTAT10WSAHP;WAMtAMTlES
The owner of the Site hereby represents and w#twnts to the ©iter signatories hereto:
that the owner of the Site has the power and authority to enter into this Declaration, to grant the
rights and interests herein provided and to cany cml all obligations hereunder,
that the owner of the Site is the sole owner of the Site;
that the owner leys fee simple to the Site subject to the Successor Addendum, attached hereto as
Exhibit C. and the interests or encumbrances identified in Exhibit D, attached hereto; has provided to
DENR the names of all persons that own an interest in or hold an encumbrance on the Site; and has
notified such persons of the owner's intentisa to enter into this Declaration; and
that this Declaration will not materially violate or contravene or constitute a material default wtrtcr
3
D-3
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"iKi'iliSfPflilli
any other agreement, document or instrument to which lie owner is a party or by wtuch the owner
may be bound or affected.
EWTOWCEMEMT
The above land use restrictions ate an integral part of the remedy for the 'COfitaoriiaiioo at the
Site, Adhctence u> the restrictions is mecesjuy to protect public health and llie environment. These
land uk restrictions shall be enforced by any owner, operator, or other party legally responsible for
any part of the Site. The above land ux reslrictioos may also be enforced by PENH through the
remedies prowled by any provision of law that is implemented or enforced ky DENJK or by means of
a civil action, and may also be enforced by my unit of local government having junsdcciioB over any
part of the Site, and by USEPA to the extent allowed by la*. Any attempt to cancel this Declaration
without the approval ofDENR or its successor in function shall constitute noncompliance with the
USEPA's Federal Record of Decision for the Site, which has been approved by DENR, .and shall be
subject to enforcement If DENR and/or, to the fall extent allowed by law, by USEF4 Failure by
any party rapnied or authorized to enforce any of the above restrictions shall in no event he deemed
a waiver of the right to do so thereafter « to the same violation or as to one occurring prior or
subsequent (hcreto-
mmm SALESi ixASjS,£WviYM£i£MimiiIIli
When my portion of the Site is sold, leased, conveyed or transferred, pursuant to N.C.G.S,
Section 143B-279.10(e) the deed or other instmraenf of transfer shall contain in the description
section, in no smaller type than that used in the body of the deed or instrument, a statement that the
real property being sold, leased, conveyed, or transferred is a Contaminated Site and a reference by
book and page to the recordation of tie Notice of Contaminated Site referenced in ihe second
paragraph of this Declaration.
SIGNATURES FOLLOW ON NEXT PAGE
D-4
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IttflllfSIIII?
IN
3U day of
ownilH
2SS WHEREOF, The Stale of North Carolina has executed this Declination oo this
,2009.
Signature;
Sipialofy'i
printed;
~J*> ¥• Af,<
SigDBtoiy's title typed or printed: '""/»j M ®$p\
D-5
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IWISlflSlli
PEFARTME1STT OF
EWVlROWMIfflAHBHATMRAti RESOURCES
certified.
The foregoing Declaration of Perpetual Land Use Restrictions is hereby approved and
By:
NORTH CAKOL1NA
WAK1CMJNW
I, l-U-t A Mwv;
rtifpT
Jack Butler, Chief
Superfund Section
Division of Waste Management
North Carolina Department of Environment and
Natural Mesomrees
a Notary Public of said County and Sale, do
a-M
hereby certiQi'that lack Butler did^asmaUy appear and sign before me this tfae'Qj-k day of
.2009.
jjk&
Notary Pubfy
SEAL
My Commission expire; Jau J5 ?-oli
HOLLY A. MURRAY
Notary Public
WaJta Courtfy. NC _ ,
• ~ • IMiA,
' % Cornmftsion Expite#
D-6
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NORTH CAROLINA STATU UNIVERSITY
HAZARDOUS WASTE SITE "LOT 86", EPA# NCD 980557656
OWNER; STATE OF NORTH CAROLINA
EXHIBIT A
COMMENCING AT AN N.C.G.S MONUMENT "TENNIS" LOCATED IN RALEIGH.
NORTH CAROLINA HAVING N.C. GRID COORDINATES (NAD 83) !N FEET OF
N—745, ] W.7«J2 AND E=2,090,5.151)??. '1'HENCE NORTH 70 DEGREES 73
MINUTES 06 SECONDS WLIST FOR A DISTANCE 01- 7168 J? FEET TO A POINT;
SAID POINT BEING "I HE SOUTHERN MOST CORNER OF TI1L ABOVH
REFERENCED PROPERTY AND THE POINT AND PLACE OF BEGINNING.
THENCE NORTH 25 DEGREES 33 MINU EES 08 SECONDS WEST FOR A
DISTANCE OF 3.22 Ff.FT TO A POINT. THFNC6' NORTH 38 DEGREES 01
MINUTES 10 SECONDS WEST FOR A DISTANCE OF 43.59 FEET TO 4 POINT.
THENCE NORTH 15 DEGREES 43 MINI ITS (19 SECONDS WEST FOR A
DISTANCE OF 20.15 FEET TO A POINT. THENCE NORTH 14 DEGREES 07
MINUTES 06 SECONDS WEST FOR. A DISTANCE OF 173.07 FGET TO A POINT.
THENCE NORTH IH DEGREES 40 MINUTES 03 SECONDS EAST FOR A
DISTANCE OF 108.78 FEET TO A POINT- THENCE NORTH 50 DEGREES 02
MINUTES 08 SECONDS EAST FOR A DISTANCE OF 38.45 FEET TO A POINT.
THENCE SOUTH 70 DEGREES 17 MINUTES 40 SECONDS EAST FOR A
DISTANCE OF 176.13 FEET TO A POINT: SAID POINT BEING NORTH 16
DEGREES 1] MINUTES H! SECONDS WES1 A DISTANCE OF 16.18 FROM AN
EXISTING R!GHT-OF-WA> MONUMENT, THFNCE SOUTH 78 DEGREES 05
MINUTES 43 SECONDS EAST FOR A DISTANCE OF" 60.05 FEET TO A POIN F.
THPNCE SOUTH 20 DEGREES 15 NtlNU'I ES 18 SECONDS EAST FOR A
DISTANCE OF 75.10 FEET TO A POINT. THENCE SOUTH 07 DEGREES 25
MINUTES 22 SECONDS WF81 FOR A DISTANCE OF 76.73 FEET TO A POINT.
THENCE SOUTH 19 DEGREES 34 MIM/1ES 37 SECONDS WEST FOR A
DISTANCE OF 29.48 FEE I TO A POINT. THENCE SOUTH 56 DEGREES 16
MINUTES 33 SECONDS WEST FOR A DISTANCE OF 15 LOS FEET TO A KUNT,
THENCE SOUTH 65 DEGREES 41 MINIJTFS 25 SECONDS WES'! FOR A
DISTANCE OI' 67,k*> FERE 'fO THE I'OIN'I'AND PEACH Ol" BEGINNING. THIS
AREA CON 1 AIMS 05,628 SQUARE FEET (2.50? ACRES).
D-7
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APPENDIX E
SITE INSPECTION CHECKLIST
FIVE-YEAR REVIEW SITE INSPECTION CHECKLIST
I. SITE INFORMATION
Site Name: NC State University (Lot 86, Farm Unit
m
Date of Inspection: December 7,2022
Location and Region: Raleigh NC, Region IV
EPA ID: NCD980557656
Agency, Office or Company Leading the Five-Year
Review: NCDEQ
Weather/Temperature: Rainy, 65"
Remedy Includes: (Check all that apply)
[3 Landfill cover/containment
m Access controls
Institutional controls
Ground water pump and treatment
~ Surface water collection and treatment
~ Other:
~ Monitored natural attenuation
~ Ground water containment
~ Vertical barrier walls
Attachments: Q Inspection team roster attached
~ Site map attached
II. INTERVIEWS (check all that apply)
1. O&M Site Manager
Karen Trimberger.
CHMM
Name
Interviewed ^ at site ~ at office ~ by phone
Problems, suggestions ~ Report attached:
Environmental Affairs Manager.
NCSU
Title
12/7/2022
Date
2. O&M Staff Pete Dressel. P.G.
Name
Interviewed at site ~ at office ~ by phone
Problems/suggestions ~ Report attached:
Owner. Piedmont Geologic
Title
12/7/2022
Date
3. Local Regulatory Authorities and Response Agencies (i.e., state and tribal offices, emergency
response office, police department, office of public health or environmental health, zoning office,
recorder of deeds, or other city and county offices). Fill in all that apply.
Agency
Contact
Name Title
Problems/suggestions ~ Report attached:
Date
Phone No.
Agency.
Contact
Name
Title
Problems/suggestions ~ Report attached:.
Date
Phone No.
Agency
Contact
Name
Problems/suggestions ~ Report attached:.
Title
Date
Phone No.
E-l
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Agencv
Contact
Name
Problems/suggestions ~ Report attached:
Title
Date
Phone No.
Aeencv
Contact
Name
Problems/suggestions ~ Report attached:
Title
Date
Phone No.
4.
Other Interviews (optional) ~ Report attached:
III. ON-SITE DOCUMENTS AND RECORDS VERIFIED (check all that apply)
1.
O&M Documents
1^ O&M manual ^ Readily available
^ Up to date
~ N/A
13 As-built drawings |3 Readily available
13 Up to date
~ N/A
13 Maintenance logs |3 Readily available
13 Up to date
~ N/A
Remarks:
2.
Site-Specific Health and Safety Plan
^ Readily available
13 Up to date
~ n/a
~ Contingency plan/emergency response plan
~ Readily available
~ Up to date
Hn/a
Remarks:
3.
O&M and OSHA Training Records
Remarks:
^ Readily available
13 Up to date
~ n/a
4.
Permits and Service Agreements
~ Air discharge permit
~ Readily available
~ Up to date
Sn/A
13 Effluent discharge
13 Readily available
13 Up to date
~ n/a
~ Waste disposal, POTW
~ Readily available
~ Up to date
0N/A
n Other Dcrmits:
~ Readily available
~ Up to date
~ n/a
Remarks:
5.
Gas Generation Records
Remarks:
~ Readily available
~ Up to date
0N/A
6.
Settlement Monument Records
Remarks:
~ Readily available
~ Up to date
Hn/a
7.
Ground Water Monitoring Records
Remarks:
^ Readily available
13 Up to date
~ n/a
8.
Leachate Extraction Records
Remarks:
~ Readily available
~ Up to date
13 N/A
9.
Discharge Compliance Records
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~ Air ~ Readily available ~ Up to date S N/A
^ Water (effluent) ^ Readily available ^ Up to date Q N/A
Remarks:
10. Daily Access/Security Logs
~ Readily available ~ Up to date ^ N/A
Remarks:
IV. O&M COSTS
1. O&M Organization
[~l State in-housc
O Contractor for state
1 1 PRP in-housc
1X1 Contractor for PRP
l~l Federal facility in-house
O Contractor for Federal facility
n
2. O&M Cost Records
1X1 Readily available
[X] Up to date
1X1 Funding nicclianisin/agrccincnt in place O Unavailable
Original O&M cost estimate:
O Breakdown attached
Total annual cost by year for review period if available
From: To:
n Breakdown attached
Date Date
Total cost
From: To:
n Breakdown attached
Date Date
Total cost
From: To:
n Breakdown attached
Date Date
Total cost
From: To:
n Breakdown attached
Date Date
Total cost
From: To:
n Breakdown attached
Date Date
Total cost
3. Unanticipated or Unusually High O&M Costs during Review Period
Describe costs and reasons: NA
V. ACCESS AND INSTITUTIONAL CONTROLS ^ Applicable ~ N/A
A. Fencing
1. Fencing Damaged ^ Location shown on site map ^ Gates secured ~ N/A
Remarks: Fencing is in good condition
B. Other Access Restrictions
1. Signs and Other Security Measures
~ Location shown on site map ^ N/A
Remarks:
E-3
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C. Institutional Controls (ICs)
Implementation and Enforcement*
Site conditions imply ICs not properly implemented
[H Yes
No
~ N/A
Site conditions imply ICs not being fully enforced
~ Yes
El
No
~ N/A
Tvpe of monitoring (e.g.. self-reporting. drive bv): Self-Reporting
Frequency: Weekly
Responsible oartv/aucncv: PRP & PRP Contractor
Contact Karen Trimberger Environmental
Affairs Manager.
NCSU
12/7/2022
Name Title
Date
Phone no.
Reporting is up to date
K Yes
~
No
~n/a
Reports arc verified by the lead agency
S Yes
~
No
~ n/a
Specific requirements in deed or decision documents have been met
S Yes
~
No
~ n/a
Violations have been reported
1 1 Yes
~
No
Sn/a
Other problems or suggestions: ~ Report attached
2.
Adequacy ^ ICs arc adequate ~ ICs arc inadequate
Remarks:
~ N/A
D.
General
1.
Vandalism/Trespassing ~ Location shown on site map ^ No vandalism evident
Remarks:
2.
Land Use Changes On Site ~ N/A
Remarks: Solar array has been removed, no other changes to on site land use
3.
Land Use Changes Off Site ~ N/A
Remarks: No changes to off site land use
VI. GENERAL SITE CONDITIONS
A.
Roads ~ Applicable [3 N/A
1.
Roads Damaged ~ Location shown on site map ~ Roads adequate
Remarks:
~ N/A
B.
Other Site Conditions
Remarks:
VII. LANDFILL COVERS Applicable ~ N/A
A.
Landfill Surface
E-4
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1.
Settlement (low spots) ~ Location shown on site map
^1 Settlement not evident
A rial extent:
Depth:
Remarks:
2.
Cracks O Location shown on site map
Cracking not evident
Lengths: Widths:
Depths:
Remarks:
3.
Erosion Q Location shown on site map
O Erosion not evident
A rial extent: <200 so ft
Depth: 1-2"
Remarks: Slight erosion in 3 areas on too of can related to removal of solar arrav. PRP contractor to
repair and resced.
4.
Holes ~ Location shown on site map
^1 Holes not evident
A rial extent:
Depth:
Remarks:
5.
Vegetative Cover ^ Grass
E3 Cover properly established
E3 No signs of stress ~ Trees/shrubs (indicate size and locations on a diagram)
Remarks: Slight erosion in 3 areas on too of can related to removal of solar arrav. PRP contractor to
repair and resced.
6.
Alternative Cover (e.g., armored rock, concrete)
Remarks:
§N/A
7.
Bulges ~ Location shown on site map
^ Bulges not evident
A rial extent:
Height:
Remarks:
8.
Wet Areas/Water Damage ^ Wet areas/water damage not evident
l~l Wet areas O Location shown on site map
A rial extent:
l~l Ponding O Location shown on site map
A rial extent:
[~l Seeps O Location shown on site map
A rial extent:
[~l Soft subgrade O Location shown on site map
A rial extent:
Remarks:
9.
Slope Instability ~ Slides
13 No evidence of slope instability
A rial extent:
Remarks:
~ Location shown on site map
B.
Benches ~ Applicable [3 N/A
(Horizontally constructed mounds of earth placed across a steep landfill side slope to interrupt the slope in
order to slow down the velocity of surface runoff and intercept and convey the runoff to a lined channel.)
E-5
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1.
Flows Bypass Bench Q Location shown on site map
Remarks:
l~l N/A or okay
2.
Bench Breached ~ Location shown on site map
Remarks:
[~l N/A or okay
3.
Bench Overtopped ~ Location shown on site map
Remarks:
[~l N/A or okay
C.
Letdown Channels ~ Applicable ^ N/A
(Channel lined with erosion control mats, riprap, grout bags or gabions that descend down the steep side
slope of the cover and will allow the runoff water collected by the benches to move off of the landfill
cover without creating erosion gullies.)
1.
Settlement (Low spots) ~ Location shown on site map
~ No evidence of settlement
A rial extent:
Depth:
Remarks:
2.
Material Degradation ~ Location shown on site map
~ No evidence of degradation
Material tvoc:
A rial extent:
Remarks:
3.
Erosion ~ Location shown on site map
~ No evidence of erosion
A rial extent:
Depth:
Remarks:
4.
Undercutting ~ Location shown on site map
~ No evidence of undercutting
A rial extent:
Depth:
Remarks:
5.
Obstructions Tvdc:
~ Location shown on site map A rial extent:
Size:
Remarks:
~ No obstmctions
6.
Excessive Vegetative Growth Tvdc:
~ No evidence of excessive growth
~ Vegetation in channels docs not obstruct flow
~ Location shown on site map A rial extent:
Remarks:
D.
Cover Penetrations ~ Applicable ^ N/A
1.
Gas Vents O Active
[~l Passive
l~l Properly secured/locked Q Functioning ~ Routinely sampled O Good condition
l~l Evidence of leakage at penetration O Needs maintenance O N/A
Remarks:
E-6
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2.
Gas Monitoring Probes
l~l Properly sccurcd/lockcd Q Functioning O Routinely sampled
[~l Evidence of leakage at penetration O Needs maintenance
Remarks:
O Good condition
~ N/A
3.
Monitoring Wells (within surface area of landfill)
[~l Properly sccurcd/lockcd ~ Functioning ~ Routinely sampled
l~l Evidence of leakage at penetration O Needs inaintenance
Remarks:
~ Good condition
~ N/A
4.
Extraction Wells Leachate
l~l Properly sccurcd/lockcd Q Functioning O Routinely sampled
[~l Evidence of leakage at penetration O Needs maintenance
Remarks:
O Good condition
~ n/a
5.
Settlement Monuments ~ Located ~ Routinely surveyed
Remarks:
~ N/A
E.
Gas Collection and Treatment ~ Applicable ^ N/A
1.
Gas Treatment Facilities
l~l Flaring O Thermal destruction
l~l Good condition ~ Needs maintenance
Remarks:
O Collection for reuse
2.
Gas Collection Wells, Manifolds and Piping
[~l Good condition ~ Needs maintenance
Remarks:
3.
Gas Monitoring Facilities (e.g., gas monitoring of adjacent homes or buildings)
[~l Good condition ~ Needs maintenance ~ N/A
Remarks:
F.
Cover Drainage Layer ~ Applicable ^ N/A
1.
Outlet Pipes Inspected ~ Functioning O N/A
Remarks:
2.
Outlet Rock Inspected ~ Functioning ~ N/A
Remarks:
G.
Detention/Sedinientation Ponds ~ Applicable ^ N/A
1.
Siltation Area extent: Depth:
O Siltation not evident
Remarks:
~ N/A
2.
Erosion Area extent: Depth:
~ Erosion not evident
E-7
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Remarks:
3. Outlet Works ~ Functioning
Remarks:
~ n/a
4. Dam ~ Functioning
Remarks:
~ n/a
EL Retaining Walls ~ Applicable ^ N/A
1. Deformations ~ Location shown on site map ~ Deformation not evident
Horizontal displacement: Vertical displacement:
Rotational displacement:
Remarks:
2. Degradation ~ Location shown on site map
Remarks:
[~l Degradation not evident
I. Perimeter Ditehes/Off-Site Discharge ~ Applicable
1K1 n/a
1. Siltation ~ Location shown on site map
Area extent:
Remarks:
l~l Siltation not evident
Depth:
2. Vegetative Growth ~ Location shown on site map
~ Vegetation does not impede flow
Area extent:
Remarks:
~ n/a
Tvoe:
3. Erosion ~ Location shown on site map
Area extent:
Remarks:
l~l Erosion not evident
Deoth:
4. Discharge Structure ~ Functioning
Remarks:
~ n/a
VIII. VERTICAL BARRIER WALLS ~ Applicable
§N/A
1. Settlement ~ Location shown on site map
Area extent:
Remarks:
[~l Settlement not evident
Depth:
2. Performance Monitoring Tvrte of monitoring:
O Performance not monitored
Frcauencv:
Head differential:
Remarks:
[~l Evidence of breaching
E-8
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IX.
GROUND WATER/SURFACE WATER REMEDIES g] Applicable ~ N/A
A. Ground Water Extraction Wells, Pumps and Pipelines ^ Applicable ~ N/A
1.
Pumps, Wellhead Plumbing and Electrical
^ Good condition ^ All required wells properly operating ~ Needs maintenance O N/A
Remarks:
2.
Extraction System Pipelines, Valves, Valve Boxes and Other Appurtenances
^ Good condition ~ Needs maintenance
Remarks:
3.
Spare Parts and Equipment
[x] Readily available ^ Good condition O Requires upgrade Q Needs to be provided
Remarks:
B. Surface Water Collection Structures, Pumps and Pipelines ~ Applicable N/A
1.
Collection Structures, Pumps and Electrical
O Good condition Q Needs maintenance
Remarks:
2.
Surface Water Collection System Pipelines, Valves, Valve Boxes and Other Appurtenances
O Good condition Q Needs maintenance
Remarks:
3.
Spare Parts and Equipment
O Readily available Q Good condition O Requires upgrade Q Needs to be provided
Remarks:
C.
Treatment System ^ Applicable ~ N/A
1.
Treatment Train (check components that apply)
O Metals removal ~ Oil/water separation ~ Bioremediation*
^ Air stripping ~ Carbon adsorbers O In-situ chemical oxidation*
K Filters: Sediment bag filter HI Monitored natural attenuation*
n Additive (e.g.. chelation agent, flocculent):
n Others:
E3 Good condition Q Needs maintenance
E3 Sampling ports properly marked and functional
Sampling/maintenance log displayed and up to date
E3 Equipment properly identified
E3 Quantity of ground water treated annually: ~ 1 MG/Y
n Ouantitv of surface water treated annuallv:
Remarks:
E-9
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2. Electrical Enclosures and Panels (properly rated and functional)
O N/A ^ Good condition Q Needs maintenance
Remarks:
3. Tanks, Vaults, Storage Vessels
~ N/A ^ Good condition ~ Proper secondary containment ~ Needs maintenance
Remarks:
4. Discharge Structure and Appurtenances
~ N/A ^ Good condition ~ Needs maintenance
Remarks:
5. Treatment Building(s)
~ N/A Good condition (esp. roof and doorways)
Chemicals and equipment properly stored
Remarks:
~ Needs repair
6. Monitoring Wells (pump and treatment remedy)
Properly secured/locked Functioning ^ Routinely
led m Good condition
E3 All required wells located Q Needs maintenance
Remarks:
~ N/A
D. Monitoring Data*
1. Monitoring Data
m Is routinely submitted on time
Is of acceptable quality
2. Monitoring Data Suggests:
Ground water plume is effectively contained
Contaminant concentrations arc declining
E. Monitored Natural Attenuation*
Monitoring Wells (natural attenuation remedy)
~ Properly secured/locked ~ Functioning ~ Routinely sampled
~ All required wells located ~ Needs maintenance
Remarks:
O Good condition
~ N/A
X. OTHER REMEDIES
If there arc remedies applied at the site and not covered above, attach an inspection sheet describing the physical
nature and condition of any facility associated with the remedy. An example would be soil vapor extraction.
E-10
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XI. OVERALL OBSERVATIONS
A. Implementation of the Remedy
Describe issues and observations relating to whether the remedy is effective and functioning as designed.
Begin with a brief statement of what the remedy is designed to accomplish (e.g., to contain contaminant
plume, minimize infiltration and gas emissions).
Contaminated soils were treated with in-situ soil solidification/stabilization. Contaminated groundwater is
contained by the groundwater extraction and treatment system. The remedy is currently effective and functioning
as designed. However, in order to accelerate the timeframe for cleanup, with the support and approval of the
regulatory agencies, the PRP has performed a soil vapor extraction (SVE) pilot test to evaluate the efficacy of
implementing a SVE system to extract and treat contaminated vadose soils beneath the soils treated by ISS and
overlying contaminated groundwater. The results of the SVE pilot test will be evaluated and a full scale system
design will be submitted for regulatory review and approval.
B. Adequacy of O&M
Describe issues and observations related to the implementation and scope of O&M procedures. In
particular, discuss their relationship to the current and long-term protectiveness of the remedy.
No issues were identified regarding the implementation and scope of O&M procedures as they relate to the
current and long-term protectiveness of the remedy.
C. Early Indicators of Potential Remedy Problems
Describe issues and observations such as unexpected changes in the cost or scope of O&M or a high
frequency of unscheduled repairs that suggest that the protectiveness of the remedy may be compromised
in the future.
The manufacturer of the groundwater extraction pumps has discontinued the model of groundwater extraction
pumps currently used at the Site and spare parts have become difficult to procure. The PRP contractor has been
able to maintain the current extraction system but indicated that decisions regarding the procurement of new
pumps or the adjustment/optimization of the groundwater extraction system will need to be made over the
upcoming 5 years.
D. Opportunities for Optimization
Describe possible opportunities for optimization in monitoring tasks or the operation of the remedy.
Optimization in operation of the remedy and monitoring tasks were discussed but no current issues were
identified.
Site Inspection Participants:
David Mattison, NCDEQ
Hilary Thornton, US EPA
Jim Ferreira, US EPA
Karen Trimberger, NCSU
Pete Dressel, Piedmont Geologic
E-11
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Area of stabilized waste arid vegetative cover
Areas with minor erosion
I >12
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Groundwater treatment building and rolloff box of IDW from SVE pilot test
Groundwater treatment system
E-13
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Treatment system control panel
E-14
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Influent tank
E-15
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Sediment bag filters
E-16
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Air stripper units
E-17
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Groundwater monitoring wells and SVE vault
E-18
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APPENDIX F
EPA PRESS RELEASE
VIRONMENTAL PROTECTION AGENCY
NEWS RELEASE
EPA.GOV/NEWSROOM
EPA to Review Cleanups at 45 Southeast Superfund Sites
Contact information: reaion4press@epa.gov. 404-562-8400
ATLANTA (Oct. 19, 2022) - Today, the U.S. Environmental Protection Agency (EPA) announced that
comprehensive reviews will be conducted of completed cleanup work at 45 National Priority List (NPL)
Superfund sites in the Southeast.
The sites, located in Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina,
and Tennessee, will undergo a legally required Five-Year Review to ensure that previous remediation
efforts at the sites continue to protect public health and the environment.
"The Southeast Region will benefit tremendously from the full restoration of Superfund sites, which can
become valuable parts of the community landscape," said EPA Region 4 Administrator Daniel
Blackmon. "The Five-Year Review evaluations ensure that remedies put in place to protect public health
remain effective over time."
The Superfund Sites where EPA will conduct Five-Year Reviews in 2022 are listed below. The web links
provide detailed information on site status as well as past assessment and cleanup activity. Once the
Five-Year Review is complete, its findings will be posted in a final report at
https://www.epa.qov/superfund/search-superfund-five-vear-reviews.
Alabama
Alabama Army Ammunition Plant https://www.epa.qov/superfund/alabama-armv-ammunit.ion-plant.
Alabama Plating Company, Inc. https://www.epa.gov/superfund/alabama-platinq-co
Mowbray Engineering Co. https://www.epa.gov/superfund/mowbrav-engineering
US NASA Marshall Space Flight Center
US Army/NASA Redstone Arsenal https://www.epa.gov/superfund/redstone-aresenal
Florida
ALARIC Area GW Plume https://www.epa.gov/superfund/alaric-area-groundwater-plume
Beulah Landfill https://www.epa.gov/superfund/beulah-landfill
Chevron Chemical Co. (Ortho Division) https://www.epa.gov/superfund/chevron-chemical-companv
Florida Petroleum Reprocessors https://www.epa.gov/superfund/florida-petroleum-reprocessors
Miami Drum Services https://www.epa.gov/superfund/miami-drum-services
Pensacola Naval Air Station https://www.epa.gov/superfund/naval-air-station-pensacola
Raleigh Street Dump https://www.epa.gov/superfund/raleigh-street-dump
Taylor Road Landfill https://www.epa.gov/superfund/tavlor-road-landfill
Tower Chemical Co. https://www.epa.gov/superfund/tower-chemical-companv
Georgia
Alternate Energy Resources Inc. https://www.epa.gov/superfund/alternate-energy-resources
Peach Orchard & Nutrition Co. Rd PCE Groundwater Plume Site https://www.epa.gov/superfund/peach-
orchard-road-pce-plume
Powersville Site https://www.epa.gov/superfund/powersville-site
T.H. Agriculture & Nutrition Co (Albany Plant) https://www.epa.gov/superfund/t-h-agriculture
Kentucky
A.L. Taylor (Valley of the Drums) https://www.epa.gov/superfund/al-tavlor-vallev-of-drums
F-l
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Brantley Landfill https://vww.epa.aov/suoerfund/brantlev-landfill
Distler Brickyard https://www.epa.aov/superfund/distler-brickvard
Distler Farm https://www.epa.gov/superfun https://www.epa.gov/superfund/lee-lane-landfilld/distler-farm
Lee's Lane Landfill https://www.epa.gov/superfund/lee-lane-landfill
National Electric Coil Co /Cooper Industries https://www.epa.aov/superfund/national-electric-coil-cooper-
industries
Tri City Disposal Co. https://www.epa.aov/superfund/tri-citv-disposal
North Carolina
ABC One Hour Cleaners https://www.epa.aov/superfund/abc-one-hour-cleaners
Aberdeen Pesticide Dumps https://www.epa.aov/superfund/aberdeen-contaminated-aroundwater
Benfield Industries, Inc. https://www.epa.aov/superfund/benfield-industries
Cherry Point Marine Corps Air Station https://www.epa.aov/superfund/cherrv-point-marine-corps
CTS of Ashville, Inc. https://www.epa.aov/superfund/cts-millsaap
GEIGY Chemical Corp (Aberdeen Plant) https://www.epa.aov/superfund/ciba-qeiav-corporation
Gurley Pesticide Burial https://www.epa.aov/superfund/aurlev-pesticide-burial
North Carolina State University (Lot 86, Farm Unit #1) https://www.epa.aov/superfund/north-carolina-
state-universitv
Sigmon's Septic Tank Service https://www.epa.aov/superfund/siqmon-septic-tank
South Carolina
Admiral Home Appliances https://www.epa.aov/superfund/admiral-home-appliances
Beau nit Corp (Circular Knit & Dyeing Plant) https://www.epa.gov/superfund/beaunit
Carolawn Inc. https://www.epa.aov/superfund/carolawn
Elmore Waste Disposal https://www.epa.aov/superfund/elmore-waste-disposal
International Minerals and Chemicals (IMC) https://www.epa.aov/superfund/imc
Kalama Specialty Chemicals https://www.epa.aov/superfund/kalama-specialtv-chemicals
Koppers Company, Inc. (Charleston Plant) https://www.epa.aov/superfund/koppers-charleston-plant
Savannah River Site (USDOE) https://www.epa.aov/superfund/savannah-river-site
SCRDI Bluff Road https://www.epa.aov/superfund/scrdi-dixiana
Tennessee
Mallory Capacitor Co. https://www.epa.aov/superfund/mallorv-capacitor
Memphis Defense Depot (DLA) https://www.epa.aov/superfund/memphis-defense-depot
Background
Throughout the process of designing and constructing a cleanup at a hazardous waste site, EPA's
primary goal is to make sure the remedy will be protective of public health and the environment. At many
sites, where the remedy has been constructed, EPA continues to ensure it remains protective by requiring
reviews of cleanups every five years. It is important for EPA to regularly check on these sites to ensure
the remedy is working properly. These reviews identify issues (if any) that may affect the protectiveness
of the completed remedy and, if necessary, recommend action(s) necessary to address them.
There are many phases of the Superfund cleanup process including considering future use and
redevelopment at sites and conducting post cleanup monitoring of sites. EPA must ensure the remedy is
protective of public health and the environment and any redevelopment will uphold the protectiveness of
the remedy into the future.
The Superfund program, a federal program established by Congress in 1980, investigates and cleans up
the most complex, uncontrolled or abandoned hazardous waste sites in the country and endeavors to
facilitate activities to return them to productive use. In total, there are more than 280 Superfund sites
across the Southeast.
More information:
EPA's Superfund program: https://www.epa.gov/superfund
it it it
TrrrTr
it it it
G@®0
F-2
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Site Name: NC State University (Lot 86, Farm Unit #1)
Interviewer Name: Stephanie Grubbs
Date: December 8, 2022
Interview Format: Email
Interview Category: David Mattison, State Agency (NCDEQ)
1. What is your overall impression of the project, including cleanup, maintenance, and reuse
activities (as appropriate)9
Contaminated soils were treated with in-situ soil stabilization/solidification (1SS). Contaminated
groundwater is contained by the groundwater extraction and treatment system. Institutional controls
are fully implemented and are adequate for long-term protectiveness. The remedy is currently
effective and functioning as designed.
2. What is your assessment of the current performance of the remedy in place at the Site9
The remedy is currently effective and functioning as designed. However, in order to accelerate the
timeframe for cleanup, with the support and approval of the regulatory agencies, the PRP has
performed a SVE pilot test to evaluate the efficacy of implementing a SVE system to extract and
treat contaminated vadose soils beneath the soils treated by ISS and overlying contaminated
groundwater. The results of the SVE pilot test will be evaluated and a full-scale system design will
be submitted for regulatory review and approval.
3. Are you aware of any complaints or inquiries regarding site-related environmental issues or
remedial activities from residents in the past five years9
I am unaware of any complaints or inquiries regarding site-related environmental issues or remedial
activities from residents in the past five years.
4. Has your office conducted any site-related activities or communications in the past five years9 If
so, please describe the purpose and results of these activities9
NCDEQ has not conducted any site-related activities or communications in the past five years.
5. Are you aware of any changes to state laws that might affect the protectiveness of the Site's
remedy9
I am unaware of any changes to state laws that might affect the protectiveness of the Site's remedy.
6. Are you comfortable with the status of the institutional controls at the Site9 If not, what are the
associated outstanding issues9
Yes, institutional controls are fully implemented and are adequate for long-term protectiveness.
F-3
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7. Are you aware of any changes in projected land use(s) at the Site9
I am unaware of any changes in projected land use at the Site.
8. Do you have any comments, suggestions or recommendations regarding the management or
operation of the Site's remedy9
No, the site team continue to work towards the successful remediation of the Site.
F-4
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APPENDIX G
ARAM REVIEW
Section 121 (d)(2)(A) of CERCLA specifies that Superfund remedial actions must meet any
federal standards, requirements, criteria, or limitations that are determined to be legally ARARs.
Applicable or Relevant and Appropriate Requirements are those standards, criteria, or limitations
promulgated under federal or state law that specifically address a hazardous substance, pollutant,
contaminant, action, location, or other circumstance at a CERCLA site. To- Be-Considered criteria
(TBCs) are non-promulgated advisories and guidance that are not legally binding but should be
considered in determining the necessary level of cleanup for protection of human health or the
environment. While TBCs do not have the status of ARARs, the EPA's approach to determining if a
remedial action is protective of human health and the environment involves consideration of TBCs along
with ARARs. Chemical-specific ARARs are specific numerical quantity restrictions on individually
listed contaminants in specific media. Examples of chemical-specific ARARs include the MCLs
specified under the Safe Drinking Water Act (SDWA) as well as the ambient water quality criteria that
are enumerated under the Clean Water Act. Because there are usually numerous contaminants of
potential concern for any site, various numerical quantity requirements can be ARARs.
In performing the Five-Year Review for compliance with ARARs, only those ARARs that address the
protectiveness of the remedy are reviewed. Because the remedy at the Site currently addresses only
groundwater contamination, this Five-Year Review will discuss compliance with chemical-specific
groundwater ARARs only.
Current Potentially Applicable ARARs
It is the EPA's policy that ARARs are generally "frozen" at the time of the ROD signature unless a
"new or modified requirement calls into question the protectiveness of the selected remedy", 55 Fed.
Reg. 8757 (March 8, 1990). The NC Classifications and Water Quality Standards Applicable to the
Groundwater of North Carolina, NCAC Title 15A Subchapter 2L, (NC 2L) on which several of the
remedial goals are based were last amended in April 2022. Title 15A of the North Carolina
Administrative Code, Subchapter 2L (NCAC 2L) is a Chemical-Specific State ARAR for this Site.
Groundwater
The groundwater exposure assumptions, toxicity data, clean-up levels and RAOs used at the time of the
remedy are still valid except for the remediation goal set for 1,1,2-trichloroethane and arsenic. The
analysis indicates that the groundwater remediation goal for arsenic exceeds a cancer risk of lxlO"4, and
the remediation goals for 1,1,2-trichloroethane and arsenic exceed the noncancer HQ of 1. None of the
remaining cleanup goals resulted in a cancer risk greater than lxlO"4 for carcinogens or a noncancer HQ
of greater than 1, and therefore remain protective of human health.
G-l
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Contaminant of
Concern
1996 ROD
Cleanup
Levels &
Rationale
(Mg/1)
1996 ROD
Cleanup
Level
Rationale
(Mg/I)
Current NC
2La (As of
April I,
2022) Uig/1)
Current
Federal
MCL/CRQL
(Mg/1)
Change
in
ARAR
Yes/No
Volatile Organic Compounds
Acetone
700
NC 2L
6,000
N A/5.0
Yesd
Benzene
1
NC 2L
1
5/0.50
No
Bromodichloromethane
1
CRQL
0.6
80b/0.50
Yes
Carbon Tetrachloride
1
CRQL
0.3
5/0.50
Yes
Chloroform
1
CRQL
70
80b/0.50
Yesd
Dichloropropane, 1,2-
1
CRQL
0.6
5/0.50
Yes
Methylene chloride
5
NC 2L
5
5/0.50
No
T etrachl oroethene
1
CRQL
0.7
5/0.50
Yes
Trichloroethane, 1,1,2-
1
CRQL
0.6
5/0.50
Yes
Trichloroethene
2.8
NC 2L
3
5/0.50
Yesd
Inorganics
Arsenic
10
CRQL
10
10/NA
No
Manganese
370
Background
50
507NA
Yes
Notes:
ARAR = Applicable or Relevant and Appropriate Requirement
ROD = Record of Decision
CRQL = Contract Required Quantitation Limit
MCL = Maximum Contaminant Level
NA = Not Available
a 2L = NC 2L of North Carolina Administrative Code, Title 15A, Subchapter 2L, Classifications
and Water Quality Standards Applicable to the Groundwater of North Carolina
b As total trihalomethanes.
c Secondary Maximum Contaminant Level
d ARAR has changed but ROD remediation goal is more stringent than the current new standard.
BOLD and underlined indicates current NC 2L standard is more stringent than previous
remediation goal.
|ig/l = micrograms per liter
G-2
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Contaminant of Concern
Groundwater
Concentration
Goal (fxg/1)
Tapwater
RSL1' 10"6
Risk
(pg/t)
Tapwater
RSL1' HQ = 1
(jig/1)
Risk1'
HQ'
Volatile Organic Compounc
s
Acetone
700
NA
1.8E+04
NA
3.9E-02
Benzene
1
4.6E-01
3.3 E+01
2.2E-06
3.0E-02
B rom odi ch 1 orom et h an e
1
1.3E-01
1.5E+02
7.7E-06
6.7E-03
Carbon tetrachloride
1
4.6E-01
4.9E+01
2.2E-06
2.0E-02
Chloroform
1
2.2E-01
9.7E+01
4.5E-06
1 0E-02
Dichloropropane, 1,2-
1
8.5E-01
8.2E+00
1.2E-06
1 2E-01
Methylene chloride
5
1.1E+01
1.1E+02
4.5E-07
4.5E-02
T etrachl oroethene
1
1.1E+01
4.1E+01
9.1E-08
2.4E-02
Trichloroethane, 1,1,2-
1
2.8E-01
4.2E-01
(child)/ 4.2E-
01 (adult)
3.6E-06
2.4E+00
(child)/
2.4E+00
(adult)
Trichloroethene
2.8
4.9E-01
2.8E+00
5.7E-06
1.0E+00
Inorganics
Arsenic
10
5.2E-02
6.0E+00
(child)/
1.0E+01
(adult)
1.9E-04
1.7E+00
(child)/
1.0E+00
(adult)
Manganese
370
NA
4.3E+02
NA
8.6E-01
Notes:
NA = Not Available
a Current EPA Regional Screening Levels (RSLs), dated May 2022, are available at
https://vvvvvv.epa.gov/risk/regional-screening-levels-rsls-generic-tables
b Cancer risk = (remedial goal / cancer-based RSL) x 10"6.
c HQ = Hazard Quotient = (remedial goal / noncancer RSL).
Bold = risk exceeds EPA's risk management range of 10"6 to 10"4 or HQ exceeds 1.
|ig/l = micrograms per liter
Vapor Intrusion
Indoor air concentrations were calculated from groundwater remediation levels for the ten volatile
chemicals of concern. The analysis indicates that none of the cleanup goals resulted in a cancer risk
greater than lxlO"4 for carcinogens or a noncancer HQ of greater than 1, and therefore remain protective
of human health. There are currently no on-Site buildings, except for the treatment building, in regard to
an on-Site VI pathway.
G-3
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Contaminant of
Concern
Groundwater
Remedial Goal
(M-g/1)
Predicted
Indoor Air
Concentration
(fig/m3) for
Residential
Exposure
VISL Model-
Potential
Carcinogenic
Risk for
Residential
Exposure
VISL Model-
Potential
Hazard
Quotient for
Residential
Exposure
Acetone
700
NA
NA
NA
Benzene
1
2.27E-01
6.30E-07
7.25E-03
B rom odi ch 1 orom et h an e
1
8.67E-02
1.14E-06
NA
Carbon Tetrachloride
1
1.13E+00
2.41E-06
1 08E-02
Chloroform
1
1.50E-01
1.23E-06
1 47E-03
Dichloropropane, 1,2-
1
1.15E-01
1.52E-07
2.76E-02
Methylene chloride
5
6.64E-01
6.55E-09
1 06E-03
T etrachl oroethene
1
7.24E-01
6.70E-08
1.73E-02
Trichloroethane, 1,1,2-
1
3.37E-02
1.92E-07
1.62E-01
Trichloroethene
2.8
1.13E+00
2.36E-06
5.41E-01
Notes:
Notes:
VISL = Vapor Intrusion Screening Level
NA = Not Available
jug/1 = micrograms per liter
|ig/m3 = micrograms per cubic meter
G-4
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APPENDIX H
2021 REMEDIAL ACTION PROGRESS REPORT
PIEDMONT
GEOLOGIC
SMA1IWOH SQIWIQM5
REMEDLAL ACTION PROGRESS REPORT:
JANUARY THROUGH DECEMBER 2021
lot 86 Fann Unit No. 1 Sir*
North C aroBiin Slate luivei-,irv
Raleigh. North C arolina
Prepared For:
North Carolina Sate Univeraty
EnvtronmentaJ Health and Safer*' Center
Raleigh. North Carolina 27695
Prepared By,
Piedmont Geologic. ? C
«X>3 Chapel Hill Road. Suite 145
Raleigh. North C arolina 27TO7
Febiuaiy 24. 2022
Pmimow Gctiopc ti apvfessimtil corpomtion licensed topraakc
Gsoioa. tC-Jlc't awtEnifncemig (C-3J&4> in North Ca'-dmc.
H-l
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Remedial Action Progress Report: .lummy - December 202 i
MCSlf - Lot 16
februaty 24,2022
I'KU! t SSIOV V! r Klirn-'lf 4 DON'
The Remedial Action Progress Report. January ekrougk December202J for the North Carolina State
University - Lot IS Firm Unit No, 1 site has toe® prepared under the responsible charge of the following
Professional Geologist registered in the State of Notch Carolina.
Willed Name
Srgnstwre
p. JULj*
Msnjarv 24-2CI22
Date
Piedmont Geologic, fx.
H-2
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Remedial Actor. Proses Report Jamarv - December 2021
*_ NCSV-Lct 86
i-ebnur.' 2-1. 2022
TABLE OF CONTENTS
Xo.
PROFESSIONAL CmUHCATIOX 1
1,0 INTRODUC IION AND EXECmVE SfMMARV 5
2.0 SITE BACKGROUNDDiFOKM\TIOX 7
5.0 SUMMARYOF GROUNDWATERREMEDLATIONOBJECTOTS S
4.0 GROUNDWATER EXTRACTION SYSTEM DESCRIPTION 9
5.0 GROUNDWATER EXTRACTION SYSTEM MONITORING AND MAINTENANCE II
OVtFATPiT . . 11
. 2 WrEiv SystemYr>m by Ope^ato?. e-- Rh spcx Ckaf.c-e 11
5.3 RemoteMo:crci?i:&OF System Q?eeat:o.vaj.t Responset;> SystemUkhtCc:o:hk;s 11
Q?iiB.inoic.t,-D2d&TE:.4ic.:EAcm,niE!. 12
5.5 Monthly GWE tore- Water Smoltz Axalyvs 13
5.6 Qt af.tefxy Gf.civt'H'atef. Potextiometfi; Si?ja>: e Data Eyalvatx::; 14
5." Ql-.«irEELTG\\"E-SY-.TEMEE«:0'i'EF.Y\\rLLSi\E'li:&.tT: Atalyiii ... 14
6.0 GROUNDWATER EXTRACTION SYSTEM OPERATION 1?
6.; Okradk; Stxmary.... . 15
6.2 OWE SY>rot Ikvei jb® Conscm? Acrot'i. 15
6.3 GWTE System tsarcr Moicrepj;c-RErr_ r- ajz Mv^Eimovai Calciiaixks 16
6,-i &\\ESYr.iH}>iE?n.f,'ECT2vlc:croPi!CG 19
-.0 GROUNDWATER MONITORING.,,.. 12
S.0 PERFORiLANC E AND EFFIC ACY OF SITE REMEDIAL ACTIONS 24
8.: CCM?AP_"rjOi; OF C&3TSTWATSR PorENnOKEIFIC-SOJACE C'KCOCR MAR AI-T COC
Isc;ce;cE:rrEAi:oy ContcoiMak 24
?.2 Bii.ii Atolyvs of Stte CtocxDWAia COC CccrcsMEArxe^ 25
S.3 Ccmlus:oki . 25
Figm*--
1
3
4
Tables
1 Groundwater naatorjis toI: cc*»truc Hon detail
2 Moutomic-well s-iusmg dLita: Febnaiy 1. 2021
3 MoniKrang-well saiizjis data" May 13. 2021
4 Mouitonng-well gaupig data. An§ii;t 3. 2021
5 Moutoime-well gmipig Ana' No'wate 11. 2021
6 SvimBEr^ed writ? of laboratory scaly a 5 £ra*x.dvrater samples collected frcm GYVE r.y;t«r.
:eco\>ery tcIIs: Febraaiv 2C21
7 S'.mmar.zed r«aLt; of Labontoiy analysi-; srciXudtater sample; effected Sar C-TUE system
recovery wells: May 202;
8 Sammanzed rerjlti o: laboratory analytis groundwater tkiii^ies collected froiai GV.T system
recovery wells: Aur.i't 2021
9 S-.imroanzed res:lb s f labcotory acaLyas arorxdmtei sample; c cllected 3«r C-WE system
recovery well-:: Ncwmwr-December 2021
10 S'.inuuar^ed results orlatoritory milysi; GYVE ryitem irJueat grcucd'.vater samples
Site iccatia: nap
Sitemap
Cfereralised sroimchrater extraction sy-teiu, layout
Site monitoring wells with statistically increasing C OC coerentnmcos caw one
Pieduoxt Geologic, p. c
3
H-3
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Remedial Action Progress Report Jxtmair - Decanter 202 J
NCSU-lot 86
Febnimy2i 2022
TABLE OF COMENTA iCONTTMIEDj
Table icontimiedi
11 Summamed res-its of laboratory anrly-n?: volatile organic coaDoiuiiii:-: noiiEAvater j?jrplei
collected August 2021
12 ly imxoanred re-ralts of laboratory and aeld .malx'SK ¦ met?!; asd field parameter;: BKrxfhvater
•aicples collected Aiisr.Ti 2021
15 SitmiHsr-ieJ results of laboratory analysis gross beta arJ. tritium: grotmAvaier soirples collected
Aiigu-s 2021
1- Historical snnnuiy of erciLscws'e: analysis resides
15 Re-rote ec Ifaim-Kendil stmstKil analysis: zio'.r.chvAi#: COC ccucenliaticns: 2002-2021
Appendices
A G\\"E 7c>teai eaapmen! Klienuti;!
B Groimdwaternwdeliag oirptrt
8-1 Gr&Wii itw p!>rfic>oit77Tift'irf 'It?* mctklr
5-2. Off jflsfn list COC dicmbftric". wodt-b
C Gjapk
D Mian-Kaic-iil .rnalyss spreadsheet;
E Laboratory repots
Piedmont Geologic, p. c.
4
H-4
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Efiroedial Act:or. Proses Report Jaiviar; - December 202:
NCSU-IctS 6
rebnury 2~. 2022
1.0 INTRODrC HON AND EXECITI\"E SUMMARY
Ths document presents a Remedial Action Progress Report iPAPR) for the Xsrth Carolina State
Utiivenity CvCSU*-Lot SS 7ami Unit Nc 1 sice -"J* '"site"- x Raleigh. North Carolina ccvenng tlx
period from January trough December 2021, A zrc.iiKhva'er extractor. ¦ G'\\~E 1system for remediation of
dissdved-pbse groundwater chemicals of concern 'CGC "A was started at tis site in September 20O£ in
accordance witl; tlte September 19% P.ecoid of DeciaeaiROD: between NC SU and the U S.
Err.-ironrnecul Rrotecaon Agency • EPA •
S-.aiitmne-; of grwxdwjte: imediato.cn objectives. G\\"E system specifications. C-WE system mcmtomii
ard maintenance procedures. GWT operation statistics for the reporting penod. grr.ir.dwster mcmtonng
procedures and readts. and an evanacon cf C-'VE system pwfonrnice are presented in die following
sections A rananiary of GIVE system operation .mi performance froai itamrj it. September 2006 threw eh
December 202115 as foDew-j
Sb—mt of €WE System Operation
G".YE system ttaitup date
Seuteaiber 21 2CKJ6
ReooitiiE'?jencrf
Jail 1 - Dec. 31.2021
GIVE. system ON-time durinsrepomitzperiod
6.'95 hoiii
GIVE system OEF-tmie dvsine reporting period
2.16.1 lions
G\YE systemCSN-percentasedamsrepertinsperiod
0
Teal G'.YE system OS-tins since startup
101.009 hours
Total GYVE system OX-percennee since startup
-6%
Volume of swuiidvrater Ktweied treated drjuii reporaia penod
1.T4.WS ffaltoa;
-•lex: granvfcrter ie-:o'.'er." tre.ia*r.t rate chinar reponas per.od
4 4 spa
Total Yoltime of eroiciAvster ieco\ enfd since G'.\"E-s'.'steni startup
2~.539.91i oUcns
Eainuted iibss of ±ssoIved-pha:e YOCs extracted dixai? reporting period
112 lbs
Estimated mass 0: ±s3oh"ed-plu^ \"OCs extracted siiKe ;vaeai starto
5.266 Its
VOC = volatile oiiaiuc corqxnaids
Site sroauhvater potentMEoetnc-smfaee concur caps Eeaerated tor 202 i indicate arcunchvaier ctiwicw.
x.d capture 2o»s fcr die shallow aqaifei ioik. and to a lesser extent tl;e aitennedi'te «nufer zone
C camr.aii'. of 2C05 and 2021 eroucdtrater COC concentrations and chloroform iiKoacentratian contour
rasp" indicate snostarJisj shmfaee of groTE.iTv.lsr COC Astnb-.iuc.is ini.e shallowaquifer zone over the
duration of GIVE-system operaticct The lateral distributions of C'OC 3 in tit shallow, intermediate. and
deep aquifer zone; are fiilly delineated
Statistically increasing trends 111 groundwater COC concentrations ova tune im 4 saeroed through Mmn-
Eendall statistical analysis far several shallow. mtetmediate. and deep icjitfei zone momtonne wells The
abject wells are located immediately adiscent to the closed site svr/e impoundment and or 111 the
Piebmoxt Geologic, p. c.
5
H-5
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Remedial. Action Progress Report: JmassK - December 202 i
NX SU-lot 86
February 2-. 2022
dcniip-tklea due: ten. ef aromi.viter 3ow tsom the iuqjDiaidaieri. witlui the delineated groundwater
capture zcne created tLroxiaii G-WE sy^em operatica.
The statistically iriireasjE trends in Ero_jr.cvatex C OC csnfeatxaiicHE for some ;:te nwatoni-^ welh are
cai-r.vbred a reflection of cciiai;ii:s cantnaoact source coitebutiC'iE from the de-see sts waste
lii^Kuncnuir A xa ability stud;/n cjirecilv being ccwpleted te evahate the additien of ;oil v-ianm
extraction I.SYE¦ into the ate remedial approach to .toehkiS the reduction of ;
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RenBtW Actiea Progress Report: January - December 2021
NC SU - lot 86
February 2-. 2022
10 SITE BACKGROIAD IN70RMATI0V
The site location .aid layout are presented in Fistu?stkxud; 5. Site zrcondwatei monitoring well
cctiscruccon. details aie listed ir. Table 1 The site is located in west Raleigh. Walte C cwntv North C ardma
directly w.tl; of die southern neiil-of-iray of Wade Avenue Extension a Lasted acce-ss hasvay that
connects to Attentate 40 The approximtely 1 5-acre site is located on and sunwmciM by State-owned
property Hie site is seemed b\- a ohain-liiik fer.ce with a padlock on lie pte, The ate n covered mth rrar.
that is imaititoed by NCSU sad consuls xi rwy of out-ef-5erv.ee sslu panels installed arcimd the late
2COO:-. A metal hnkbie tli.it houses the site GWE system is located inside the fenced enclosure.
The site is located «i the north side of p. development complex coniaxius Cirter-Fmley Sudr.mi and PNC Arena fNC SlTbasketball, professional liotl'ey. andmultj-pnrpoiie arena ; A
wooded area is situated between tlae die raid Wade Avenue Extension to the nctth. aid a sen*:; ecpaiteg
lots are located sositii and west of the site. A NC SU football praccee facility is located east of tit e nte A
X«tl: € aiakaa Dn-sico. of Health aid Human Services iDHHS i facility is located north of die ate across
Wade Avenue Exteii'sion.
The ate it; located en a broad c:«t of p. low rolling lull at an average elevation of -50 feet relative to the
National Geodetic Vertic:! Datum C\GYDr Oik. noith-tc-south flc.unz. jwsnmrtec stredEi is located
approximately 50C fee: east of the it? A second intermittent stream onamates at a paid approximately
1.600 feet '.vest of the site and flew;, westward to its confluence with Rxhl.ntd Creek. A tkrl perennial,
stream onaotes at Jk pond located on the State Fairgrounds property approx-mafely 1; CO feet wjtf: of
the ate sad Cows generally westward to its confluence u-.tla Richland Creek.
NC SU selected Lot Sfi of Farm Unit No. 1 in 1969 as a bitrial site for hazardous chemical and low-level
radioactive waste generated at die University's eixaticcal raid research Liborator.es. Burial of waste was
dixcncnued in November 1583 to comply vridi resvlattoo promulgated imde: the Resource CcoeiraEwr.
and Recover.- Act (RC'RAi. Tr.e waste mfoasdmejE was closed through m-siti sobilizatior, u: tie mid-
1990s. followed by design and construction of die C-WE system currently m operation, with die latter
intended to coaan: res:4ial sioimdwater CC>C s associated with the iMjxnuvduier.t
Addicotal trisnnadon reprcbwkstoncal *Aa;te airpc-al and maugemenr practices. resiiliTorr bwoiy.
site zeolcpcal hydro ieoloacil dsaraotensiics. and findniffs of emucsiniental site nr-esajaaon: lie
pcnidsc in the Rewetti-£.4aim P> sgrxa figpm: Sqpmiber 200€ fm wgh Zicwwber-08&. prepaedl-n-
Piednioct C-eoloac iJaziuiy 20®;.
PiEmioyr Geologic, p. c.
H-7
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Remedial Actor. Prose:.! Report Jarjarv - December 2021
NCSl~-lot S<5
February 2-. 2022
5.0 S17UMARY OF GROtlXP WAIL R REMEDL\HO>" OBJEC TOTS
Site groundwater remiaiicn acnv.tif: were implemented ir. 2506 u: accordance -.vttii die ! 996 ?.ftcrd of
Dear. or. 'ROD: :i?jedty the EPA. Grsrjr.chvater r-anediaticu objectives <>tsb2-J»d m the ROD are
• Prevent C OC migration to rxface wr.er to keep surface water CQC level; mm exceeding
Ambient Water Qvialitv Criteria \ AWQC*:.
• Control future release? cf C'OC •; to «Kure prrte: tot cf hurun 3*slTh »r_d lis eiRTranmeit
i Saperfimd Amer.dineiiK andEenahonzaticn Ac? sSAEAj Section !21[d],i
• .Pammeifily and agm&astly ieAxe mstiMty. toxicity. or vdha&e of cLuicter.ac Lizard®;
waste with treatment > SARA Section 121 [dji
Remedial Acaou C'fciecm es- for Gi ouudvram
¦COC
Rttaedintion Level
ins'Li
Basis
rieiireiie
1
N<1 ,tani"i 1,
Carbon tetrachloride
1
Contract Quantitation Limit (C1QL)
Cidorcfcdir,
70
NC groundwater Bacaard ( 1)
Methylene chionde iDCM:
s
NC gmmdwater standard (1)
TemdiorcetliaK ;PCE'j
i
Contract QmtiMiat Limit (CRQL)
Acetone
700
NC groundwater standard ¦ 1)
BroiiKniddorcmetjM!T:e
1
Contract Qiiantitatioa limit {CRQLlJ
i. 2-Diddort>propane
1
Contract Quantitation limit (CRQL)
1.1.2 -Tr.clLoroeth.ine
I
Contract Quantitation 1™* (CRQL)
Tnchloroethene TCEi
i :
NC groundwater standard (1)
Manganese
2 "0
Background concentration
Anemc
10
Contract QuanctatiattLimit ^C'P.QL,»
ill 15ANCAC 21 D202 ui2D06,
Cteirjip goals for the ate are the North Carolina groundwater quality ;taiKhrd5 defined in Title 11A
XCAC 21 02 G2 >'2L standards! FcrCOC5W.fh|roiu:cwater standard-; les? than dvebtoratoa'prscccvil
rttmlitjcor. limr. (FQL>. the PQL constitutes tlie pecitdvater deantp goal The ate background
arotEdwater concentration for manganese is the sroaridwater clean1^ level for that ccmporxJ,
Pudmoxt Geologic pc
H-8
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Remedial Action Prozrevs ?jepon January - December 2021
NCStT-L«S6
February 2A 2022
4J GROODWAIER EXTRACTION SYSTEM DESC RIPTIOX
Tee zeieraiiied liyoitts of the C-W r well; and grcrjcdwater treEstmeri: system are shown in Figure 5 and
Appendix A A Mammy of die G\YE sv>tmi: prose". md des lea is predicted as follows
• A conservative G\YE syjtsn; recovery and treatment design flow raw of 20 gallons per amine was
selected based c-n the results of the pre-iirsizn pjtnp test said groundwater £ow mode lira
• The GYVE system incorpccafis thirteen shallow G'\E wells and. four deep G'VE wets. The
shallow GTE well; we eras traced of d-mch inside disaster 'I D.I. craxlett-sweL well
screen:} sing and are installed to depths rar.gin| from approximately 50 tc 30 feet belcw srace
i approximately _;_S to 3-5-5 feetNGYD) Tk deep G\VE well? are ccnanxted of--inchID,
stainles-i-sTeeL well screen1 mmie and are installed to depths raiismf fromapproximtely 118 ta
152 feet below grade fapprcxanateiy 51C to 265 feet \G\D •. with outer 6-rndi Schedule -C PYC
casmsrs arreted into the top of bedrock Each OWE wellhead is enclosed vitfcm a concrete vault
that hout.es electrical and plitabiGS coxukcgik
• P.unpmz depths of 3 SO feet NGYD for shallow GTE wells and 5^0 feet NGYD for deep G'AE
wells were wlecfed to imanti* gretccw.tter flaw ticsr. deeper to shallower aquifer zones
• C omiianated stramevrater is punned from She G'\E wells using dedicated. stainless-steel,
variable-frequency dr.ve. electee aibmeisible p\unp-; .Gntndfcs P.edi-Flco Pump controls are
located within a control panel located cctside the sroiiuiwrter treatecerr VxlJmg 71k p-.anp
speed -.which controls groundwater recover.' rate) is set iMtitally for each well at to pianp
control panel Each pump contains intrinsic protector.? tJitt prevent die pump from naiuis dry,
• Iitdivid.iAl ptucp recovery luies manifold into a 2-uidi 2 B.. iiidi-der.sitv polyethylene >HDPEs
header Lie tint conveys recovered sovr.dwatei to the treatment builder?
• Upon entering tiie treatment bidldhig. the OWE well Leader Ascliirws to a fCO-gallon -stainless
steel process water tank The process water tank incorporates .Ltrasomc level controls to pror.de
for sLmt down of the ¦system during high-level =u;d lew-level conditions Tue er-uent tank i-s
controlled by a variable speed drive so tkaf transfer-pimp rates may be prozmunyd to m.'\\s
inf. .writ aroroidwaKT recovery xatet
« Recovered zrcvm&vster is piarped fcrin the prcc es; water tank through mo ba e filters pliunaec mi
series •; skid =1 i to retrieve pirQcicre matter ton: the raw grotEdwater xfhient
• After passi.§: tlcoiteh the sitd al big filters, influent sctmdwata: is discharged tc two. 10 eallco
per imnne ;jptni four-Qa}-. low-profile air stnppen pltmbed m parallel for dissolved volatile
oreani;csmpoimd :l'OC; removsl lite air staffer cimips. iiKoiporate hi|li-lewl ai;d km-tevel
cocsc It- that rjrti-os and ten-off respictvel}'. the air >tn.ppa auq: transfer pumps
Piedmoxt Geologic, p.c
H-9
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Remedial Actor. Progress Report JmtiaiY - December ICC 1
NCSU-Lot S6
February 2-. 1022
• Treated groundwater ef3ueir frcen the air flr.pper sumps is pxapec to the C;ty of Raleigh sanitary
sewer system: through a 6-indi ID FYC pipe hi accordance w.th a City Industrial Use:
PretreatEent Permit 'TUP*
The or.r.na. GUTE system design and operation ficui September 2C06 tiiro.rzh January 2012 incorporated
additional erouidtvatf: treatm-ecf processes after pass-Jig throughthe skd *2 se filters. i&rludme graniite
activated carbon i GAC i and icr.-«l«ti\ie resin > 1SR; filtration Tbe:e additional treatment component!
were taken offline permanently sfcusng ill June 2012 m confjr.tcoc rf tl:e transition of G\YE-oywem
lilt-charge under a pre'.iou:- National Polhtticn Discharge Elimination System (KPDES) pernx: to die
current City of Raleigh ILT. The anrent IUP pent:: tva; issued m May 2C1S and will be eke fa renewal
around May 2023
From system waray in September 2035 to June 200S. all seventeen G\\"E wells were in terr.ee ipsa
receipt of reailfi of laboratory analysis of May ZOOS s«B2wate samples nearly June I'OSS. :t was
reahzed that increased At-ooh*d CDC ceiiienuaacr.: had been detected m groundwater Maples c ejected
from arenaeuate one. deep inoritaring wells cotcpared to die previous ;T\Iay 20C51 groundwater samples,
collected prior to startup of the G\\"E system As a re ail. concerns arose that iroitncwster pi incuse from
±e deep G'.TT ".'ells could result sr. inr.varred asieitmon of dissolved COOs from the sLaHew sjprolite
aciufer to die deeper saprolite aq-.nfer aid the bedrock Jenifer Is: response deep &\YE well5 DRW-A. B.
C. andD were f&Ler. r.it of operation on June 10. 2COS .tixi h?ve remained offhae -since th.it time
Piedmo.\t Geologic, p. c
H-10
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Remedial Actios ItaereB Report Jaimrv - December 2021
NC SU-lotS6
Febnuiy 24. 2022
5,1) GROOWATE.R EXTRACTION SYSTEM MONITORING AND MAINTENANCE
5.1 Oreniitw
System operaticc and aiaiu:eir.a:e wk ccnduoted itiarg the lepoitins period inaccordance with the
ijpenmen .riaMwvcnimsePfrvv Gf Drnkf-wrei Lwooiot; Sjnem. dated Aiiasi 21. 201—, prepared by
Piedmont Geologic. Routine Qi'M wai-tee-; included the foCorais.
¦ Weekly system r.stn by the Operator ;n Respoaable Charge t OP.C 1. or backup QR.C. to meet City
of Rakish IUP permit re.yirsirec.t3 and main! an the Grcushva ter Treatment Sy;t«n Los
• Monthly sasapbm mi aralysit cf GIVE jysteai dSum water, i.e.. treated water! in accoz&mse
-with the ',vr.em NPOE i and C in- of Haleiah pereeits.
• Monthly iiuupluK and icah~> cf GWE v'Jteir. mfi.wir: water ii e . untreated water: for
evalvmsii of recovery ivtfem efficacy.
• Remote momtorx.f of the intern operation and estate re'-p otse to iystetu up «t conditions
• Rciitme HLHiiteiiance ;uch ss replacement of 7,''.to. bag filter;
• Q.KVTei!;. collection ard evahaiicii of sraimmvater po teuncmetnc v.rface data from, ate
montoims wells
• Q-.iarterlv sampling tr.d ajialyas of shallow OWE wells fci gross beta activity and mtitm.
5.! \\>*Jdv S^ '.win Yrifs by Opei.iret in Re'pc>rrible Cluige
hi ac;oidai;ce with die system XPDES pemiit. weekly wstem visits were conducted iong die reporutz
period by the OR.C. oi backup OP.C. to inspect tie OWE system treatment cccqporeiis ana disrluree pom*,
The site vnin also included r.aul inspection of .ill system ecpiprnent. recording of isnze and taeter
readily; for pumps. ail stripper- bag filteii and other CMBpoaents: check; for sir and water leaki from
system component; andinspector. of the GWE systeme32.w:.t w?ter for floating solids foam or *he«a-.
5,3 RemoteMonitoring of System Operation andRespoa-e to S'-.temUpsetConditioiK
The system tefeaRtry irmt iEGS Pro Control model B2l was retrofitted m May 2014 to allow fox remote
commimcaticn with time mt via the internet isdier than a telephone iandhae Prior to the upgrade, the
telemetry .nt -was programmed to transmit rep err; via facsimile. wide the retrofitted unit ;s programmed
to transmit email reports to Piedmont Gec-loac penoitie* sit tiCows. terns a aarilaidned trmstaittal fomi
Pudmoxt Geologic. p. c
H-ll
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lenecM Action Prozrev; Report Jamarv - December 1021
XCSU-Lot S6
February 2-1. 2022
• Doiiy uottxe1' reports: tie telemetry -system is programmed to Momatrally seed a report snail
each morningdays per week) that shows a ' snapshot" of system operating conation; and the
current system effluent totairxr readies ue. total gallons c: groundwater efEueet discharged by
system.
• Alum (system q: set/ reports: ai ami report aoi:; are sent u; response-tc system alarms ompsete
inch a; high-level conditions ti; aums'tarJ:?, lew pressure or hgh pressure conditions in the sur
stripper. heli-pres-siiie conditior.5 ir. ilter vessels, jiid si other luteal shutdown. condition.?.
Email reports were renewed on a daily basis dams the reporting period to determine the general operating
condition of the system The 2—hour average grotmdtvater re:ever.- discharge rate was calculated each day
using tlie daily system effluent totalizer reading Logged cpexstiriiA. da*? m the telemetry system was
derail oaded and reviewed for issues. Wlsen system i-isiies were observed NCSU was promptly tiodSed mid
iespxise measures were conducted.
Esailwere* renewed upcc. receipt to cfeteimre the nature ctf the alarm and to develop an appropriate
response action The XC SU project mmager was iufoncei of alarm condition; withr. one busnjess day of
the alarm. and appropriate svyem imir.terjrKe and or repair; were conducted,
5.4 Operation and Mnintenaiue Activuir
F.ctitme G&M xtmtie:. were; inducted daring the reportm| pta:-d cpasszt y "211 cn-rsiis and
pencnnar.;*. iDilrdmg die following
• Week/-, or as-needed ckuigxa of 5S-micren tag filter; in each of the two bag filter canister?
• As-needed cleaning or sir-stripper nnsp sight tubes aid skid *1 and =2 Sow meters.
• Flcor-r.nnp pump :learjne and RqtistHierJs
• Equipment kbncadng
• Bi-acmx clearing o: the process water fcui; iPWT iater.or.
• Axinuai replacement of effluent flow meter totalizer 'factory calibrated!
• Bio-dispersac,: injection system inspector, cleacais
PlEDUOXT GEOLOGIC. P.C
H-12
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Remedial Acton Prasres? Report Janiian' - Decanter 2021
XC St"-Lot 86
February 24 2022
? A Monrhly GWE System Effluent ,md Mtuenc V.itet S.nnpliaj Annlv-i?
McmtlilT Mgfhwg and. latentcfy amdpk of gMudaaier teeitaeiit qitan effluent groimdwater mas
smiicfed m acccxdance wrth the iwpiiejiKits of fc site City of Raleigh IUP doing the leprting period,
timnriling' activities mm ilimniiM*wi wing te system log cbsaibecl above, and samples woe analyzed by
North Carolina certified laboratories. GWE system effluent monitoring and perfinmaDoe leqmrtmenR for
fc: MP axe listed as Mows.
GllH System Effluent Groundwater Analyses and Discharge Ihwitatioirc
(City of lalagfc Mttsttial User Pfretteatment Permit)
Fni .lmrtri'
it Lmiitr
Monitoring RrquitvineaT-;
Mc-ariiiv A"1**
Did1* M ixujium
F; Sil'jeiiC ¦¦
T*-p*
Flow
2,00iRpd
cor.txr.oiB
reoortng
pH
-
_
each itt-ekiige
event
grab
2-.fcra.ar t.lcw level i
—
_
1 .-nxiithv
srab
Aner-ic
—
_
1 . Jonahs
erab
Copper
—
_
1 'Jmcntlis
grab
Irc-r.
—
_
1 .'months
prab
Lead
—
_
1 .'lasntlr;
erab
Zux
—
_
1 Jmcntli:
grab
Maitsmese
—
_
1 mantle
grab
Mclvxfcrtoii
_
1 (kasnthi
9«b
Selenium
_
1 6tncE*JE
»»b
Stiver
—
_
1 Smenin
Cadmim
—
_
1 (kasnths
ffft
Chrcniimi
_
_
1 6mcnfc
gnb
Nickel
_
_
l>60KHfc
mh
Benzene
—
_
1 nivwtii
mh
Carbon TetixMorrrthene
_
_
1 niontii
Tchiene
_
1 month
grab
1.1,2.2-TesacMo:oefliHne
—
_
1 month
giib
TricHoroefcece
—
_
1 month
CHorcfonE
—
„
1 month.
1 2-Dtbrcuwethaae
„
_
1 month
«ab
1.2-Dichior^iTop .to
„
_
1 month
gab
Tetrachloroediene
_
1 month
eab
L4-D;osaae
_
„
i month
mh
Trifcir
—
1 JnKntbs
mA
Gross beta actratv
—
_
1 .'months
srai
Effluent pH analysis Aims the reporting per.oc was ccncucted by Piedmont Gecbrx (NC Ceraac.itor,
=55601 Remarjiig analyses were conducted by Pace Amlytcal of Kudersville. North C arclnu ;NC
Certificatiaa-0.3421
GIVE system iritait gntmthv.iter me, untreated water i sample; were collected or. p. monthly ba-iu in
eojijtaimcn '.nth tlie effluent groundwater ;amplir.f Asamed above The irihwre sramibvater sample;
Piedmont Geologic, p. c i?
H-13
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Remedial Actor. Proaress Eepoit Jur.rarv - Dei ember 2021
NCSlT-Lot S6
Febnuiy2-i. 2022
were collected from a »mjp!e pon on the mfi'.eri water pipe prior tc dvrluree ate- the process water ttrJ;
Sampler were sifaufted to Pace Analytical and analyzed fcrVOC's by EPA Method S26C. eoss beta
activity by EPA Method 900. C. and mtum by EPA Method 306 0
Duplicate G\\"E system influent and effluent enxtrxlwiter simples were alsc collected en a monthly "mm?
aci provided to 2sC SU for ln-bcwe laboratory mnlyts of znx-s beta actir.ty ami tritium No G\¥E system
rJlu«it ci eftefii: aroimchrater smiples were collected m September 2021 due to the systembeais sflxe
t'disttesee fori*: in Seefioe 6 Oi
5,6 Qnaiteily Groundirarer Powutioinetnc Surf.ve Data Evaluation
Quarterly incimrj.if-we.il aausiag events for measurement of pcamchvater level- were conducted dunnsr
die reporting period m February. May. Aufust. and. November 2021 tjtoiow.vatex level data are provided
m Tables 2 through 5. respectively Groundwater poteiitiometnc surface contour imps tortile shallow,
intermediate. and deep aetiiier zone-; were developed from tie ground wate-lewl data The maps were
reviewed to evahute peifommce of the OrWE system m terms of containment and capture of the ate
ero'xid'.vatei C OC plume
5,7' Quartet ly GWE-SysKm Recovers Well S,iinpling and Analysis
Groundwater simple: iveie collected from GWE-system shallow recovery welk on a quarterly basis dunns
die repoitnz period conc-jrwut wiuimcmtorjis-well gauging events ir. February. May. Attaint. and
November-December 2021 Tlx §rataivvater wiEjjles were collected fere -sample ports located nlot.tr
discharge pipni| at the GWE wellheads while the s:iba«rsible GIVE neevsy punis); were in operate®..
Samples '.wre siitaitted under cbur. of custody tc Pice Amlytical and analyzed for gross beta activity by
EPA Method 9')C •) and tritium by EPA Method 9® 0 Duplicate sample? were also presided to NC SU for
iK-liense laboratory analysis of gross bell activity and tritium Summarized rer.Lts cf laboratory analysis
i mailed by Pace Analytical) far arciridwater samples collected icoiGWE wells ir February. May.
August. arid Xcvember-Deaember 202*. are prcv.dec in Tables (5 through 9. relatively.
Phdmo\t Geologic, p. c
H-14
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pjjmediil Actor. Progress Repoit January - Decaliter 2021
NCSU - lot 86
Febn.my 2A 1022
6,0 GROITSWATIR. EXTRACTION SYSTEM OPERATION
6.1 Ope radon Summary
The C-YvE well pimp; were en fee a local of approximately 6.59J keare and were off fox a total of
approximately 2.16f hours dmtig tlie Jarnuiy tknigh December 2021 reportrng period. fee a total on-tme
percentage of approximately 75c» As dt'^uraed below at Section 6.2. courtiaK thirjig the reporting
period was generally short lena x nature and mo-tly a rem;: of typical operational icd maintenance it.sue1;.
m-tli the exception of ar. approximately seven-week period o: dcrctiaie experienced a; Aiigust-October
A total of KppDHiately L754.645 gallons of groundwater was recovered, treated, and discharged Airing
2C21. it at; average grtr.nidwater recovery rate of sppioxumtely 4 - spin A t«?l cfapprcxmialely
2".539.918 gallciE of eouidtvater has bam recovered seated, and ±::careed by the G\YE system from
2C06 tcxciifh 2021
6.2 GUT Svretn bines and C on ec rive Action!
Most of the GV\"E ostein down time dimnztbe ieportmgpenod>'approxHHteh" 53%'; occurred during late-
August through early-October 2021 die to damage caused by ,'nelectncj. arse to die EOS ProCoctroi
unit dimre s thicderstrau in late-August 2021 71* electrical Rise blew an ukwcjl fuse on the EOS
ProC onad unit, as well as tljf main fii« for die GWE-oystem control panel 71* EOS ProCatxol unit was
removed from '.be control panel and -hipped to t> manufec trier for repair Following receipt of the
repaired EOS ProCotaol ict; aid replacement cf die man; control panel fee die G'AE system was
restarted oc Ottober 7. 2C21.
GWE-syitem downtime also occurred in February 2021
-------
Bmwiri Action Froaess Report Jamrv - Decacber 202 i
NC SU - lot 86
rebnuiy 2A 2022
Short-tern; fi e , one days or tes; C-","E-sys«m ck'.vr. nice « nined pen evtcallv Ami the rax.ur.der of
the reportingpenod due to ^fica! operational and maintenance issue-. such a> lush-pressure tomtcns in
bag filter canisters, power failures. and other inscelLnKO'Js condittons. all of which were addressed TOthn:
relatively short eme-penods.
6.3 GYVE System Influent Monitoring Results and Mem Removal Calculations
Results cf laboratory analysis of morAly (JATE-system ieHhsit srouinr.varex sample; are tabulated in
Table 1C The predajiziari groundwater COCs at the site m terms of rrtxjueixy of detections and
oiaaritude of concentrations are betrene. carbon tetrachloride. eKcffcim. l.Z-dibronioetlmie fiDB}. i.2-
dichloroprop.me 11.2-DC'Pj. 1.4-dioxane. rsr.c methylene chloride A -,iannmy of laboratory analysis re-robs
for these COCs m n»i;tidy G\VE system influent groiaidivnter vmpdes collected hi 2021 is provided as
follows.
^uirunnnied R?siiirs of Labour.;;- Aiuh ;i- ofO-ViX i?y^eic; lufbiriir ^ninpk
Jan.
:o:i
m
:o:i
Mar,
:o:i
3b
M'21
Sample Date
Apr,
:?:i
Amah* (fig/L)
Caifeffli tebacUoricte
<4QJ
«40J
nr
•=-40.0
~isr
49.6
w
«50.0
112
IF
127
w
-isr
-Sffi-
T235CF
1.4-Dmxhk
—
T :•::• J YOC: •
SampJe Dare
Juh-
:o:i
..-lUf
:o:i
¦Sfpt.
:o:i
>>>
Aa«iy*p,g/L|
Gabon tetrachloride
68.2
68.0
NS
111
<50J
CSoioffflIB
Ho-
rn
5,4®
6.310
5,710
175
142
1,2-DCP
1,120
1.21®
'7.500
<7.500
NS
Methylene eilaide
B0
Total ¥OCs*
',913
NS
7.932
s Total detected ccncentratiaD of volatile organic canapatiiiis, iachitfing
listed in Table 10 but not included in tie above summmiy.
= Mo sample collected due to the GffiE system teng o-fflme.
Foikwrng ft e srapfas of the C-WTE system effluent siomdwater COCs listed above; pfa total ¥OC
concentrations, versus tine. COCs sot delected Airing: monthly analysis events are graftal at Rvalue
Piedmont Geologic, p. c
H-16
-------
Remedial Action Progress Eepoit: January - December 2021
NCSU-Lot 86
February 24.2022
of one-half of the laboratory reporting limit. 1.4-diasane is excluded from the graphs based on its
inconsistent history of detections due to the relatively high laboratory detection limits for various samples
10000
1000
1
I
P
&
5
z
O
100
INFLUENT GROUND WATER BENZENE, CARBON TETRACHLORIDE, EDB,
l^-OCP, & METHYLENE CHLORIDE VS. TIME
- Benzene
- Carbon tet radi loride
EDB
1,2-DCP
- Methylene chloride
INFLUENT GROUNDWATER CHLOROFORM & TOTAL VOCS VS. TIME
lOGOOO
E
z
O
F
£
£
b
z
O
u
10000
1000
100
- Chloroform
-Total VOCs
iiiiiiiiiiiiiiimiiiimiiiimmniiiiiniiiiniimiiniiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiimiiiiiiiiiinmiiiiiiiiiiimiiiiiiiiiiiiiiiiiiii
DATE
Piedmont Geologic, p. c.
17
H-17
-------
IhbmM Action fto^ess Report: January - December 2021
2CCSU-L«S6
February 24. 2022
7i:e is;;rei5e x sjcimmviiei VOC coiiMttratiMU felicwj^1 June 2CCS conespomiee w.tii the
ce-.sansn of pimping of die deep CAVE weZ^ in June 2CCS bduait sramewater COC ccneeriraeor.; 3iaw
generally and and.ialy deeKK-ed over time foilowins die xitial post-June 2CCS xcrease
The erinutec nriss of total disidved-pkise VOCs removed fromr>:* nmm&snxer through C-Y\~E dtirmg
the repsraif period it. calculated as follow-. along with VOC im^-reinovil calc-wtton; for prev.co
rfj;cr.m£ pencds. Hie cakiLattoiii laccipcrate the mean detected total VOC c cucentradcni in motdily
G\YE -rvsten: udirat 5ans)le5 collected over the operational k'Joty of tl* CAVE system
ErimaitdM^X' 'A VOC ¦ Removed 1r- ihrOVVE
A
B
D
E
F
Period
Mf,m
Groiuid-
C cm t-raon
CouveruM
Mr,
Tvrat
•Tatti
F.icioi
F.k tor
FftiftM'
Kemined
IafhseuE
Volume
i.L Siil:-
; ~ raji
1!. • j •
(Pi"!
VOC -
'.2*3'
s ing L;
Obf 2.6 0c - Co OS
1 u 9S1
l.ilZ.y*;
_¦* .
'.'.wl
0X222
166.-f
06 li>08-12 3I'D?
25.529
44671"
3 7S5
0 001
0.CC22
95 0
01 01 C-9-12 310&
22 OS4
S19.B2
3 ?S5
(1001
0.CS22
150 7
0101 1C - 12 51 ¦' 10
23 964
1.511.460
3.785
0 001
!>»> 1
v.uy»_
301 6
0101,11-12 31 11
23,790
1.229.770
3 785
0 001
U. L» v !
2437
0101 12-12 3112
15.02"?
611.262
3 7S5
0 001
r,
V. w
76 5
01 01'13- 12'3113
1-j 416
1.C48.607
; 7S5
o oo;
,*1. r> •••>*)
125.9
01 01;K-12 31 14
19.664
2.156.110
3 755
0.001
0. C 022
354 7
01 0115 - 12 31' 1
1-032
2.126735
:
(1001
O.C022
2-8 5
010116-12 31 16
IS 655
3.237.614
3 785
0 001
0.0022
449 5
01 OUT-12 31 IT
12.63S
2.7.59.302
3 755
0.001
0.C222
251.4
01.01'18 -12 31 18
10 716
3.822.665
3755
0 001
0.CC22
3-1 1
01 01119 - 12;31 19
SC.428
2.163.111
3 7S5
0 001
O.OC22
1S7 S
01 01OD — 12'31 20
7.217
2.C06.565
3 "35
0 001
'J. >J V —
120 6
01 01'2!-12 '31' 21
7,654
- . ."4.S4&
3785
0 001
u. \* v__
lll.S
TOTAL
3.166.0
F = A x B x C x D x E
A graph of cumulative ma;? of disss! ved-phase "%'CXZ' removed from gro\Edvvater since ctartup of the ::w
G\VE systemm September 2036 :sprovidedas follows
Piedmost Geologic, p.c
H-18
-------
Remedial Action Process Report: Jamiarv - Etecember 2021
NCSU-Lot 86
Febmary 24. 2022
MASS OF VOCs REMOVED FROM
GROUNDWATER VS. TIME
¦8
>
-
¦r
£
•/I
u
o
>
u~
o
un
us
%G I— =C o rr,
w, i© r- aq o* o f- rj
r-4 r-i n
O p O O — — — — — — — — — — r j r-4 r-4
6,4 GUT System Effluent Monitoring
Results of laboratory analysis of the monthly GWE system effluent (Le.. treated) groundwater samples
dining the reporting period were submitted to the City of Raleigh in monthly Discharge Monitoring Reports
(OMRs), prepared in compliance with the site City of Raleigh IUR All 2021 GWE system effluent
groundwater analysis results comply with the requirements of the IUR A summary of laboratory analysis
results for monthly GWE system effluent groundwater samples collected in 2021 is provided as follows.
Piedmont Geologic, p. c.
H-19
-------
Remedial Action Procs:', Report Jamiair - Rxauba: 2021
NCSU-Lot 86
February 2-. 1022
iiiitinnritized Rx:ulo of Lni>->i. nrc-t Aiu!v:r, ot C-^L V- :tTin Eiflufm >nmpir
Sample Dak
Jan.
:o:i
Feb.
M.ir.
:<>:i
Aru,
Mnv
Ml
June
:«i
Aunlyw ijigi)
Benzene
1.2
- -
10
1 0
1 0
1.0
Csroor. tetrarHsr.de
l.C
l.C
-I (i
1 0
1.0
1.0
Toluene
1.0
* f>
1 0
1 0
1 0
• 1.0
i. 1.2-2-T CTxhloroeth.UK
* 1.0
' 0
1 0
1 0
1 0
l.C
ICE
' l.C
. -
1 0
1 0
1,0
1.0
C hiororoim
.. ¦ ft
5,0
5 0
Q
5,0
" ^
EDB
• 1.0
- -
1.0
1 0
1 0
' 1,0
1.2-DCP
1 n
1
* ft
10
1 0
10
1.0
PC'E
¦ l.C
1.0
11}
11)
10
1.3
1,4-dcs-UK
5S5
601
5T3
436
561
55"
2. Wicrjv
NA
NA
0 0254
NA
NA
0.037?
Arsenic
NA
NA
10C
NA
NA
10.0
Copper
KA
NA
",s
NA
NA
5.0
Iron
NA
NA
75,4
NA
NA
135
Lead
Nri
NA
5 0
NA
NA
, ^ ^
Zinc
KA
NA
2? —
NA
NA
3C 7
Manzanese
NA
NA
3."10
NA
NA
-.120
Molyhienur.
NA
NA
NA
NA
\,i
V* ft
„ .U
Selenium
NA
NA
NA
NA
NA
10.0
Silver
NA
NA
NA
NA
NA
' J.-J
Cadmium
NA
NA
NA
NA
NA
i ^
l.u
Chronii\m:
N.-t
NA
NA
NA
NA
¦ 5.0
Nickel
NA
NA
NA
NA
NA
•
Analyt* tpCi'L)
Taenia
NA
NA
<;c
NA
NA
42?
Grosi tea
NA
NA
0,925
NA
NA
:.2i
pH: •t.md.ird unit?)
74
"4
6
~ S
f j'
7.3
i.coatmnedi
Pudmoxt Geologic, p.c
H-20
-------
Remedial Actor. Prosre ss Report Jainiarv - DKflttw 202 1
NCSU-Lot 85
Febnur.-2-i. 2022
SiurunnLi;rdKf:'iic; oi LMxi jc-r' ; of GV.!! Sv'rrm Efsltiriir S;i;n.p!n ifoudtn^ci:-
Sampk Dar*
Juh
¦* % 3
- . .
Ana.
' "
¦Srpf,
-v21
Oct,
:o:i
:<>:i
Dm.
2<0I
AnAle (jigflu)
BoEaie
l.C
» r-
- .>.>
NS
1 0
1 0
l.C
Casta#. tefaeMcmie
l.C
* a
NS
1 o
L.O
• l.C
Toluene
• l.C
» A
- . i."
KS
1 0
1.0
• l.C
LL2.2-TAaci!«*oeiaiie
l.C
• :.d
NS
1 0
1.0
• l.C
iC-E
1.0
l.D
NS
1 0
1 (1
1.2
Cliorofoim
l.C
' 11 z
NS
1 0
1 0
l.C
EDB
l.C
1 ,u
NS
1 0
1 0
l.C
1.2-DC?
1 c
. •
NS
1 0
1 0
• l.C
PCI
l.C
l.C
NS
1 0
1.0
• l.C
1.4-dicxaae
692
563
NS
4SS
¦TO
15-
Mercurv
NA
NA
NS
0.C~93
NA
0.C2S2
Arsenic
NA
NA
NS
10 C
NA
10.0
Copper
NA
NA
NS
31.0
NA
18 S
lien
NA
NA
NS
63S
NA
ise
Lead
NA
NA
NS
0
NA
n
Zu:;
NA
NA
NS
NA
3: 1
Maaeittf.f
NA
NA
NS
5.510
NA
-.130
Molvbdeinan
NA
NA
NS
NA
NA
• 5.C
Seiemum
N.H.
NA
NS
NA
NA
10.0
Sil\™er
NA
NA
NS
NA
NA
* fi
Cadmium
NA
NA
NS
NA
NA
¦ 1.0
Chrxuxini
NA
NA
NS
NA
NA
. <: "
NA
NA
NS
NA
NA
:'.C
Annlytf (pCiLl
Tncjm
NA
NA
NS
794
NA
565
Gross bew
NA
NA
NS
1 301"
NA
114 U
pH {tfand.it d Tinitii
7.5
7 5
NS
' ,5
7 1
7 "3
NA = No t aail'Teri.
NS = No Mmple coilected due t
I" = .'toddle was hoc detected
:• the OWE
Traeai beu:
s offline.
PiEBMOxr Geologic, p.c.
H-21
-------
Renw&l Action Process Report JmiEiv - December 2021
2CCSl"-LotS6
Febnurv 2-. 2022
"0 GROIAWATIR monitoring
Peifonii-Tiice of site remeial actions is based on results of site EV.Exr.v-re: mraiitcrjie follc>\wx startup of
the GWTE system in September 20CS Amul aw srcsmewiter sampling analysis iras initiated sr. 2005 in
accordance mili: the following caittMilmg ccc.carats
• 6»5i(?'#H:T.'4,i'.S:iM5;wif iT: SAP.*, August 1.2C1S. prepared by Piedmont
Geolosc
• Gj'Jitfif'xJ.V'itHJfwW CW;a'.ilrj?,TO»rt Plm(QAPx Ausmst 1. 201S. prepared by Piedmont
Geclcsc
The arjr.ial ate grounhrater sampling program includes momtomig well? specified k die site SAP QAP.
plus &r.v site monitoring wells installed in Jvrne 2C1S. listed as follows:
iIW-2
MW-16I
MIV--1S
M\Y-5
MAY-163
MW--11
M\Y-6
M\Y-rs
KIW-lD
2.P.V-S
Nn'-r:
MW-42S
MYC-US
MW-17D
i.ra'-2i
mw-2~
Kfr-3S
ii\"-i2s
UW-3-1DR
MT-4JD
2.IW-12I
MW-35S
MW--5SR
MW-12D
MW-35D
lvP,\"--5D
MIV-13I
MW-36S
MVY-l :DP.
.\nV-3SD
m\y-i
mw-:?
mw-3~
!-.r,Y-16SR
2.JW-3S
Annual site srwmcwater sampling dicms the reporting per.od was condrjcted from Angist 5-11. 2021
Pr.or to zroundnater saujle c oilec tio?.. groundwater levels were rnea snred tr. all site monitcmig wells en
August 3. 2021 using ar. optical interface piobe. which it ataisislies between non-aqueous phase liquid
i^APl: and vwt« August 1 2021 ercuaavater-level d>t? are prov.ded m Table 4 NAFL was not detected
x any of the monitanr-a wells One site cacnitonng-we:] \WX-9l was cry curias the August 2021 well-
ziueing eient
Gioioidwater sncples wwre collected 3«n £» irwatoace wells twitf either low-flew pumping or
tradfiotial pin ge-aiid- wnrpk tec laucpe; nt accordaore with die site jiacKwatei s .mtplmg aid uikvyi is
pi sr.. Groundwater quality inclciitore mducfcag pH. teiBJerature. specific condiittmce. dissolved oxvgeji.
ar.d tur'a,cliT were analyzed dance mo:u:onng-well p.rgine using pre-c .ilibn ted. direct-read, field meters
equipped with. a flow-thrcnMi cell. All Jim-dedicated samplins eaupmen: mis clex.ec pr.or to each itse
Pmmioxr Geologic, p. c
H-22
-------
Remedial Actor, Progress Purport Januaiv - December 2021
>."CSU-Lc>tS6
rebnury 2-. 2022
and in between well saEipkngs m accordance mtli the procedures df'.cnbed :r. the site pc'.ind'.v.ver
sampling analysis wort: plan Pxee water and ecjupmen; ctemmg wastewater xras transferred to die ate
G\VE ry:tem foi treatment ar.d ±ocLiree. The sro'.rAoter and QAQC ample; we» submitted under
chair. cf custody to Pace and analyzed for the follc.vmz
• VQCs by EPA Method 62DCB.
• FX'PA metal; by EPA Method 6C20 and 74,~0A:
• 1 4-I>.o:;ir* by EPA Method &260B-SIM:
• Gro y, beta activityty EPA }, fethod 9 00.and
• Tritium ty EPA Method 9&5 0
Duplicate gr«mc. water smipks were collected and provided to NC'SU for ui-house laboratory anal; sis of
grow beta activity and tntum.
Results cf field and laboratory analysis of August 2021 gratiewatei ample: r? summarized in Tables 11
tbroiid: li Trends in groundwater C 'X coacentriticiis and distntotkms .tie ci soused m Seetmi S 2
Piedmont Geologic, p. c.
23
H-23
-------
Baotmfial Actios ftpct; Jijiox - December 2021
NCSU-Lot 86
February 2-. 2022
8.0 PERFORMANCE AND EIT1C ACT OF SUE REMEDIAL ACTIONS
Paformmce andeffkacy of site remedial actons are evaluated thioasfa examx.atsoi:$ of the cenuminen:
sad capture of the ate zromidwater COC plume and reductions of ate poind';rater COC eoncectrifconi
Evaluation cf phm* containment mi reduction is tased on l',i DjmparKcn of eramiivater poteittioinetne-
¦r.ir&te ccmtovrriap; and COC KOCMiceffiration contour imp:- prepared for data collected pr.or to itaitjp
of the G'AIE system to mj.pi prepared ;oi d.i ta collected following startup of the C-WE system: and 2: trend
analysis cf acmithwtei COC" c sreenfcations versus Tims for mdiwdual site inoatoruig wells.
8.1 ComparUou of Grmmdnratn- Poteutiauetiic-Ssifacf Contour Map? aid C OC
Isocoif fstrotian C onrewr Map
Ctoinidw.iter drawdown, capture zones and COC ccncentratLou ctstnbiitioas are evaluated fl.ffor.2li ate
groundwater modeling completed -jc-aisr Surfer 8'' cccititnng software i,'C-clden Software, Ir.; j. Tie
following data -sets were incorporatedinto tlie sroakiwater mode:;:
1, May 200? soraxhrafei potenucauetnc-siirface cota for the iiallow intermediate and deep
aquifer zones.
2, May 2005 rrmmd.vater cNorcfom-c cneeatiaticn date for the sluZovv. intermediate, and deep
aquifer zor.es.
3. February. May. August. and No*.«iuber 2S21 zrcundivuter potent!ometix -surface data for the
shallow. intermediate. and deep aquifer 201:85.
4. Attrosf 2COI sioiaidirater d^oroSKic-cairomtiai data for tne shallow. interaiediate, and deep
aquifer zones
Data sets 1 aild 2 represent conditions pr.or to startup of fee site OT.TE system in September 2COt5 Data sets
3 and 4 represent conditions thirjig the 2021 reporting per.od. rati: the monitoring-wll pctenticmetnc-
r.tface data t emg collected Tutti the G\VE system m operation 1 i.e.. under pucpiar conditions;.
Groundwater nr-clelins output is provided m Appendix 3
May 2CO:" groundwater potent onietic-sirface contour reaps (Appendix B-l :• indicate dut groundwater
flow under con-piiaipiiig coudinor-s is towardi die west-northwest over relatively shallow potentK'Eoetnc-
surface gradients of aroitud 0.C5 ft ft Comparisons of 2.lay 20C5 poter.tiometne-surface contour maps and
toxrespoiscbis 2021 maps i Appendix B-l 1 mdicate zroioidwr.tei drawdown in the shallow aquifer zone in
response to pumping seneiaily in the areas of GWTE well? PAY-1. PAY-2. R.W-3. RW-4. PAY-9. PAY-10, and
Piedmoxt Geologic, p. c
H-24
-------
Remedial Actio:: Pioere:: Report: Jar-usrv - 1
KC SU - Lot S6
Febrair.- 24 2V.2
RW-1; Drawdown r:ptouaimted for the intermediate atjuife: zoos. 5]though :till generally appai ezt
in the area:- of CAVE well: B.W-1, RVC-2. R.TV-: „ S.W-3 and'or HAY-4 C0mp3n-.cn of the May 20C?
p o:enr. or^em: - nut see contour map; nath the CDrre:pccuiiz.g 2(01 zap: for the Jeep acmfei zor.e indicate
sisJar pot*:.tc-ta«rr.c-;\s:f?cc contour p u.t. no appaiert influence on the deep acuifer zox,e froe:
ope:atioz of the OWE :y;tem).
A: zhowz. in die Aufi'.t 2021 jroidcv. j:*! chloroform ivoconcenlratum cctifcc: map: in Apptndix 3-2.
;s;e j: orxctv.vu COC di:.t:buf;oir, are folly dalizeated k: ch< -.hallow intermediate. and deep aqmfei
zeet:. and fully :onamed thu ought the coinbm«d effect: of the G\\~E ;v;im operation mc njtuisl
pomdu'iter COC alternation. Companion ofMav 2005 3rd Augu:t 2021 r:curdv,a:«] chloroform
i:occ-c:*ctutior. contour nip; izdic Aib:t»nt!al apparent lateral Jmnkage of the p o in:Uvat«r
rhloiofoim c.i:tnb\it!oi: ovei ame is the ihaBoiv aquifer zoes. pirticularly in the r.dth«i- and louthem jite
mi: C Depart: on: of May 20C5 and Augmt 2021 map: for th« mtemieiate and deep a .»-. coatasnzs fyir 0;
mo.a daas point", ) lam-KacdaD tett re:u]r, are tesregated into :u: :ategon«:- of r.«-d: ir. jicicim'jtsi-
COC coa:sntt3tion: ove: ame "aa^td on Coefficient of Variation and C or.fid-»n;< m T:#r.d a^alya", i«egi'3l
to tha ans]y;i: algorithm. 7he-:e tund ^aTefoiiraao^; are denoted a: Ine:ea;iB2 PiofaaMy Itteieat-tz,
Dectea'-mg Piohatly Deneau^s. Stable, and >"0 T:eni. with the latter «•.:tr.naLy i«p:a stable
tread with :om» cosceztranoa outh«-.. 3; a flu:tuntir.f aend vntz uo overall dogmas.: hicreauiig ci
d«:i«j'.;r.j t»nd«-cy
Pirnuoyj Geologic. fx.
H-25
-------
Remedial Artico Proeress Report: Januar,- - December 2021
NCSU-Ict 56
February 2-, 2022
Tue Maim-Kendal] t«: was csnqieted or. .i wet-by-1,vel baa•, for site jncmtarins veils objected to at
Least four srorjidn'.iter iazaplx.s snalvKS events The anaiysi-; w,r, inclusive of fee seven sreiiidwitfei
COt ? detected at the highest cancentniiciis for «ch well C 'Xt. net delected; during individual moistonr.s
events were entered into the analysis at die valise of the laboratory repoifjig lirai-
Mans-Ker.dall tt:-r yeaisheets are presided in Appendix D. A aamL&y of M:iui-Kendall tea remits n
pror.djd in Table 15 Hie analysis indicate-: Increasing or Probably line.vims trends m concentration over
tme for one-cr-raore samdsraier COG: for ash! of the tinny-three ate mortitorjE wells evahxed A
summary of mcnitorjig velk with statistically increasing tor probably increasing) concentrationsis as
fellows
Uouitcrau V^rli: im?Il St.iG'.nc.iiiv Iiici t-.mn; !.OC C oncem-ity^ Over Titrir
Wrli III
Aqtutei Z>;iie
Ciirtfiic.it oi C out ens
MW-2
Shallow
U-rnxmm-i-cMmmmmm (U-DB-3-CP)
MW-3
Shallow
EDB
MW-8
SMlow
1.2-DCP
MW-121
MeuMifiate
Benzene
1.2-DCP
MW-13MDR
Deep
1.2-DCP
MW-ITZ
ktersoeclute
Benzene
C arboc tetrachloride
CfclorafouL
1.2-DCP
MetMer.e chlonde
' TCE
IPX- 17D
Deep
1.2-DCP
Shallow
1.2-DCP
PCE
TCE
A smiuqmjt c: zrcvmdwatei C'OC t> showaia statistically UKje.vx? i or probably increasing' concentrations
k as fellows
'jr'Msnttw.nH COC ¦'vttli SurrrkAlj. liiaf.viii-; Conceiin'.Vi'Mt' Qiei Time
Oiemicnl of C i-nceni
Moiiitc-i ids Well
Aqnitci Zone
Rwiawnp
MW-I2I
MW-17I
lotemuediate
C arbor. tetrachloride
MW-17I
Intermediate
CMorofisnn
MW-17I
Intermediate
1,2-DB-J-CP
MW-2
Shallow
(cantmned)
Pmmioxr Geologic, p. c
H-26
-------
Remedial Actor. Progress Report January - December 2021
KCSU-lot S6
February 2- 2022
tli.TOSr: hi >tjn-dc.\l Tiriii.l'- Beme?i> Au£U"! li'-O mcI August MCI' o^i-nmie-:]¦
Well LD.
At) iiife 1
il lie inks! of C onceni
T t end tin ougii
August :oio
Ire-ud through
A«si-[ ;«):i
MW-17D
Beef
1,4-Eiosane
Stable
No Trend
MW-37
Shallow
Chkfoftxnn
1,2-Dcr
MeiwIeiKelitaricfe
Prohath Decrease
Jncreasmg
Probably Deere j s_ie
Decreasmg
MW-41D
Deep
Carbon tetrachloride
Probabh" lucre.muz
No Treat
MW-42S
Shallow
1.4-Dmxane
No Trend
Stable
4 *-2L sondnd=COC not detected at caiceitratiGns ataw I
erects
Most of die statistical trend dwiiMS between Auzust 2020 md August 2021. is lifted abrje are it the
desired more beneficial. direction (i.e.. toward stable and deoxassf tends, or tc belew 21 standards).
However. no previously meressing trends were retried to decreasing trends. and 210 previously d«cre.i:in2
tends weie reversed tc increasingtrends. between August 2220 and August 2021 Some previously stable
trends converted to decreasing trend:: however. 110 prmcady stable trails converted tc increasing trend;
1,3 C«dashns
A ™nnn- cf conclusions ressrchig CAVE sv£em penbnsaaBce md efzcaty "*««d or. the a bow
diKir.-r.02.c-is as folic,v?
• P.uupuiz cf site GWE '.veils re alt: in a grcx.&vate: rapture zone x. the -slullo'.r acprer zone that
encapsulates the fully deline-ited extent; of groundwater C OC distributioELS in these aquifer zone:.
• Stitstscxly increasing trends x. poundwater COC cwxentotions aver trne are discerned throueh.
Mum-Kaidall statistical sialysis for several *Jlt11ot.\ intermediate. aiii cfeep aqiafer zone
moutonng wells Tut abject well: are located xaiiecMteJy adjacent to the closed cite waste
3HBoinidmeLt Md or x tbe dowiigradieiit direction of groundwater flow Sour the -jupoundiMiit.
within die delineated grevmavatei capture zcix created through GWE system cperaten
• The statistic ally increasing trends m groiuidvviitei C OC : mcenQndoas for some -lite mootoniig
wells cue considered „i refection of conQniiias contaminant source cciimkaxcs t:m die closed
site waste HDpoimdmeat A rrasihlity study is currently being completed to evaluate tlx addition
of S\*E into ±e site remedial approach to augment tlie reduction 0: source area OX
COEOeiltTiltOilS
Piebmoxt Geologic, p. c.
H-27
-------
Remedial Actor. Progress Report January - December 2021
KCSU-lot S6
February 2- 2022
tli.TOSr: hi >tjn-dc.\l Tiriii.l'- Beme?i> Au£U"! li'-O mcI August MCI' o^i-nmie-:]¦
Well LD.
At) iiife 1
il lie inks! of C onceni
T t end tin ougii
August :oio
Ire-ud through
A«si-[ ;«):i
MW-17D
Beef
1,4-Eiosane
Stable
No Trend
MW-37
Shallow
Chkfoftxnn
1,2-Dcr
MeiwIeiKelitaricfe
Prohath Decrease
Jncreasmg
Probably Deere j s_ie
Decreasmg
MW-41D
Deep
Carbon tetrachloride
Probabh" lucre.muz
No Treat
MW-42S
Shallow
1.4-Dmxane
No Trend
Stable
4 *-2L sondnd=COC not detected at caiceitratiGns ataw I
erects
Most of die statistical trend dwiiMS between Auzust 2020 md August 2021. is lifted abrje are it the
desired more beneficial. direction (i.e.. toward stable and deoxassf tends, or tc belew 21 standards).
However. no previously meressing trends were retried to decreasing trends. and 210 previously d«cre.i:in2
tends weie reversed tc increasingtrends. between August 2220 and August 2021 Some previously stable
trends converted to decreasing trend:: however. 110 prmcady stable trails converted tc increasing trend;
1,3 C«dashns
A ™nnn- cf conclusions ressrchig CAVE sv£em penbnsaaBce md efzcaty "*««d or. the a bow
diKir.-r.02.c-is as folic,v?
• P.uupuiz cf site GWE '.veils re alt: in a grcx.&vate: rapture zone x. the -slullo'.r acprer zone that
encapsulates the fully deline-ited extent; of groundwater C OC distributioELS in these aquifer zone:.
• Stitstscxly increasing trends x. poundwater COC cwxentotions aver trne are discerned throueh.
Mum-Kaidall statistical sialysis for several *Jlt11ot.\ intermediate. aiii cfeep aqiafer zone
moutonng wells Tut abject well: are located xaiiecMteJy adjacent to the closed cite waste
3HBoinidmeLt Md or x tbe dowiigradieiit direction of groundwater flow Sour the -jupoundiMiit.
within die delineated grevmavatei capture zcix created through GWE system cperaten
• The statistic ally increasing trends m groiuidvviitei C OC : mcenQndoas for some -lite mootoniig
wells cue considered „i refection of conQniiias contaminant source cciimkaxcs t:m die closed
site waste HDpoimdmeat A rrasihlity study is currently being completed to evaluate tlx addition
of S\*E into ±e site remedial approach to augment tlie reduction 0: source area OX
COEOeiltTiltOilS
Piebmoxt Geologic, p. c.
H-28
-------
RaiX'dial Actor. Fr^ere— Report Jainiaiv - Detacher 2021
NCSU-Lct $6
February 2-, 2022
FIGURES
Piedmont Geologic, p. c
H-29
-------
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GEOLOGIC
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H-30
-------
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Highlighted wells have statistically increasing
groundwater OOC concentrations aver lime.
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ti-33
-------
A-xcn ftosrs:; 3sbcc.: li
TABLES
H-34
-------
TABLE 1
{mNDWAHE MONTI OEJVG T\ZLL ((MMUIfK DETAILS
N«a C apiIlej. Slsk Uajvenury
Lor 56 rjixt
FjLfdjh. Xor:h Carolina
WellLD.
Nwciuj
Eiuiia*
WLChm
fli
Top of Cizik<
~mixt <2>
Gronifd
Ilev (2)
:. :r«n ILevxnoD 13 i S:r*er Dtprfi (31
lev
BmCDD
Top
Bacrara
?,Ti-L
--p.??: SI
2.053.7134"
s
43930
437 73
400.5
395.5
372
42.2
Mff-H
T47iH5£J7
2.033.717 3 3
5
43352
43605
397.4
3924
40.7
45.7
MW-3E
747J72.0S
2.033.71B.5]
s
43325
43753
3 37.4
3314
50.5
55.5
W-2
747J3+ 50
2.0S3.7S144
s
443.74
446.00
401.2
395.2
44 S
49.B
MW-3
"47.B3330
2.033.72-S3
s
445.39
443.53
431.2
406.2
32.4
37.4
MW-1A
T47.B33 :S
2.0S3.7149S
S4
443.35
44139
33L.9
379.9
630
62.0
MW-3B
"47.329 3C
2.033.716 I S
5-3
443'®
4-202
3 7L.G'
359.0
710
73.0
W4
"47.73333
20S3.S4726
S
454 32
452.54
4-05.5
430.5
470
52.0
MW-5
"47.Pi: 73
2,OS3.6S- 29
S
44316
439.53
403.5
395.5
390
44.0
"1 !
> •"*
>
"47.Q1" 2L
2.QS3.665.43
S
439SL
43PJS
393.4
333.4
460
51.0
mw-5b
"47.913 J L
20S3.66B 75
S-I
440.33
43P 72
3 33.7
373.7
56.0
6L.0
3tfar-6
-4-.PS- 3L
2,033.6P5 31
s
433.51
436J6
402.9
397.9
33.5
33.5
MW-7
"47.P72 .40
2,033.75? 49
s
44354
440.09
+0L.3
355.3
36.3
43.S
mw*
"47.P35 5S
2.033.33130
s
447.S5
44553
397.9
3919
460
53.0
747,564 33
2,033,56P.S2
s
442.52
ND
SD
M>
ND
ND
MW-10
"43.03532
2,033,564 36
s
43309
ME
ND
ND
ND
MW-11&
"47 .PS" 24
2,533,904 :4
s
430.01
42 P. 54
4-05.6
400.6
240
3.0
0,r&'-l]I
"4".ps: 67
2,033.91^52
I
43429
43120
3 73.6
353.6
57.6
67.6
^^5.¦-L2S
"43.03537
2.033.726 35
s
427 24
426 33
397.2
39L2
2PO
34.0
mw-o
"43.033 03
2,033.3852
I
43070
427 45
359.5
354.3
67.7
73.7
74BJ54S21
2.033.354!
D
427 45
42755
33L.C
323.0
P70
3C7.D
W-13&
"43.SP925
2.033.4PS 30
S
423S2
423 "3
394.7
339.7
2P.0
34.0
511-131
"4^.12+JiS
2.033. m 24
I
423 53
423 53
35S.9
353.9
55.0
$3.0
MW-13XH
•4&12' 37
2.033.512 6"
D
423 34
423 3"
333.9
323.9
POO
3CC.0
Wtt-14
"47.1-3 54
2.034.OP] >2
S
433.17
45D13
433.4
403.4
370
42.0
MW45
"43.073 43
2,033,447.30
5
432JS
43167
397.7
3917
34.0
39.0
MW-36SR
74S.019.S5
2.033.323 3 3
5
43.50
426 32
396.3
335.3
3D.0
40.0
^^-3 SI
"43.004 62
2.033.33243
I
432.34
42PJL3
3 "4.7
35+."
54.5
6+.5
-.6D
"43.02+ 35
2.033.33 P 32
D
42S53
42P43
349.5
339.5
BOO
9C.0
M^l"-L7S
"43.063 54
2,033.615.43
&
42509
424.02
39S.C
393.0
26.0
3L.0
t:
"43.062 "L
2.033.626 55
I
42774
424.56
371.3
353.3
532
53.2
mw-3td
"43.0B" a
2.033.61 2 3 9
D
425 44
42554
330.9
320.9
P5.0
305.0
"4r.6"*3 44
2.033.75129
S
448256
4*722
407.2
4022
40.0
45.0
MW-27A
"4".6S" 2if
2,033.7-P 23
S
446.55
447.40
392.9
333.9
54.5
53.5
mw-29
"47.'S: 34
2,033.753 7!
S
447.67
446.01
395.5
390.5
50.5
55.5
MW-30
'47.579 3C
2.034.C72 53
S
440 36
43E.37
399.2
339.2
3P0
49.0
mw-31
"47.564 14
2,054.073 35
S
44072
436.15
396.2
336.2
-2.0
52.0
mw-3 2
"47.760 44
2,054.166 "2
5
433.35
436-23
43L.4
433.4
24 S
54. S
mw-33
"47,760 99
2,054,157-93
I
443 33
43642
3 73.4
353.4
60.0
70.0
MW-34SR
747,694.98
2,033.52643
5
45+32
45232
424.3
40+.3
2S.0
43.0
"47.702 24
2,033.936 53
D
454.71
45223
36L.2
353.2
PIO
3CL.D
mmscmGWWGiC. t>c ?«¦« i ef 2
H-35
-------
7AELE : ,«=ar;H.
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H-36
-------
TABLE 2
MOMTORTSMVELL GAVGINO DATA: FEBRUARY 1 X-21
N:rii C :\j o'u-i \-:r.n I'm*: • i
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TABLE 3 icenEtoimdi
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TABLE 5
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H-44
-------
TABLES
StmBlIZEO IESIXFj or LABORATORY ANALYSE
GROU>T>WATER =kAlffLIS C 0111CTED FROM <>ROr3WATIR,E\TTUC TTON TlULi
TTBRIARY 2021
>'onh C urottaw S?sie UanrraiY
Lo: Si '-Art
RtJceL Norrb 'I i! ;-uc:'i
vAmdf Da:r
Km-.:
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2,121
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2121
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21 21
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H-45
-------
TABLE"
SnauyAEDOBD lESTLFj OF
i^KOUNDTl'ATER vttffiLES COLLECTED FROM OK0V>WATER. E \TKACTION T\TLLri
UiV li'll
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H-46
-------
TABU S
SEMianZEP KZSITT'j Of LABORATORY* ANALYSE
GKSOWAim^SaMFLIS COLLECTED 3\0MGKOr/>WATEK,E\TXACTIONTIZLL1
Aic-rsT 20:1
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Let 86 mm
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a Amp! * ID;':
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Km".:
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-------
TABLES
SOCVLAKLTED RISn.Tfj OF LABORATORY AXUY=iB
OROOT>T\'ATER i-UIPLZS COLLICTZD FROMOS-O^WATXR-EMR-iCIlOV IILL'j
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H-48
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i.iBLi. .u
SUMMARIZED RESTXFj OF LABG9L4XOKY AXALY5B
GWE SX5ZEU JMTL1TXT C-ROI>U*A¥El, vAUFLTv
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immn
saasxBxim iisixts of laboratory axjossb
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TABLE 11 CiflMsiHiHi!
gm.lMABT7TT> KE'jIXTS OF LABORATt I.'. L-i'ilil
VOLATILE ORGANIC COilPOlTOK
CiU3l"HDWAtIRSAlIFLES CGL&BC12D A3PGC5T2fltn
North Carofina Sat# Unnirarr
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vsiVdAsnm keoixtv of Lmmximx analysis
VOLATILE OK&AMC CfflMPOOlK
0J\CODTVATER rjAUFLES COLLECTED AVGUvT2021
Nwrh C ftrotina fj»le 1 nrreratr
Let Sf *kw
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, £ 55
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TABLE 11 fEwriaiiBd'j
ttiaiAKMEQ RESULT; OF LABORATORY AN.4LYS1S
VOL41ILE ORGANIC CCftPOUMH
C^OOTm ATTR ittiELIS COLLECTED AUOYZT 21-21
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METJ1S MSB FOLD PARWZXEBS
OUTQWATER SAMPLE'S COLLECTED ADCrDST Jill
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H-55
-------
TAB LI i: icoatLBwdi
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s*«kmp«4H1 uum cmgcmi.Ai:ccsT irn
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SaniUxIZH) SESTLfS OF LABORATORYANDIRLD ANALYSES
HUMS AND HHJIPAKAUETEBS
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The Remainder of the Remedial Action Progress Report- January- December 2021
is not included due the size of the file. The US EPA has a full copy of this document for review.
H-73
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