Burnsville Hosiery Mill_LIMITED GW ASSMT

Prepared for
Winter Star Corporation
Project Number: 2546

Prepared by
Altamont Environmental, Inc.
231 Haywood Street
Asheville, NC 28801
828.281.3350

Limited Groundwater Assessment Report
Former Burnsville Hosiery Mill

54 Ferguson Hill Road
Yancey County, North Carolina

August 19, 2015

Limited Groundwater Assessment Report August 19, 2015
Former Burnsville Hosiery Mill, Burnsville, North Carolina Page iii

P:\Winter Star Corporation\Groundwater Assessment\GW Assessment_SDG edits.docx
Table of Contents

1.0 Introduction ...................................................................................................................... 1 
1.1 Site History and Characteristics ..................................................................................... 1 
2.0 Site Investigation .............................................................................................................. 2 
2.1 Health and Safety Information ....................................................................................... 2 
2.2 Monitoring Well Installation and Groundwater Assessment ......................................... 2 
2.2.1 Monitoring Well Development ............................................................................ 2 
2.2.2 Monitoring Well Sampling .................................................................................. 3 
3.0 Results .............................................................................................................................. 4 
4.0 Conclusions ...................................................................................................................... 5 

Figures
1. Site Location Map
2. Sample Location Map
Table
1. Groundwater Analytical Results
Appendices
A. Analytical Data
Limited Groundwater Assessment Report August 19, 2015
Former Burnsville Hosiery Mill, Burnsville, North Carolina Page 1

P:\Winter Star Corporation\Groundwater Assessment\GW Assessment_SDG edits.docx
1.0 Introduction
Winter Star Corporation (Winter Star) contracted Altamont Environmental, Inc. (Altamont) to perform a
limited groundwater assessment at the former Burnsville Hosiery Mill property located at 54 Ferguson Hill
Road in Burnsville, Yancey County, North Carolina (Site).
The Site is a 2.896-acre parcel located in Burnsville, North Carolina. The Site contains a former
manufacturing facility that is currently vacant and reported to be approximately 28,900 square-feet in area.
According to the Yancey County Geographic Information System (GIS), the Subject Site is composed of one
tax parcel and identified by Parcel Identification Number (PIN): 081016933250000. The Site location is
shown on Figure 1.
1.1 Site Background
Altamont previously completed a Phase I Environmental Site Assessment (ESA) for the Site dated September
22, 2014. The Burnsville Hosiery Mill reportedly manufactured boot socks for the United States Army and
was in operation from the 1950s until 2010. The Site has remained vacant since that time. The Phase I ESA
identified five recognized environmental conditions (RECs) in association with former operations at the Site.
• The historical and long-term manufacturing operations at the Site represent a REC.
• At the time of the Phase I ESA, at least four underground storage tanks (USTs) were identified on-
Site. Three of the USTs (a 550-gallon UST and two 10,000-gallon USTs) appeared to have been used
for storage of heating fuel or fuel oil. Previous contents of the fourth UST (a 1,000-gallon UST) were
uncertain. At the time of the ESA visit, this tank was exposed at the surface and appeared to be
damaged. No obvious petroleum odors were observed at that time.
• Multiple unlabeled drums and containers of unidentified material were located within the interior of
the Site structure. The origin of the unlabeled material could not be verified.
• Multiple 55-gallon drums and other containers were located along exterior portions of the Site
structure on soil surfaces. Many drums and containers were not labeled and the origin of the
material was not known. The material was not located within secondary containment and previous
undocumented or future releases have the ability to impact both soil and groundwater at the Site.
• A heavily stained trench drain was observed within the Site structure. The discharge point of the
drain was not identified. The disposal of petroleum, solvent, hazardous substances, or other
materials via this drain has the potential to have impacted soil and/or groundwater at the Site.
A series of assessments have been completed at the Site in response to the identified conditions detailed in
the Phase I report. Most recently, Winter Star Corporation requested that Altamont conduct an assessment
to evaluate the potential for the historical Site uses to have impacted groundwater at the Site. Details of that
assessment are described in the following sections.

Limited Groundwater Assessment Report August 19, 2015
Former Burnsville Hosiery Mill, Burnsville, North Carolina Page 2

P:\Winter Star Corporation\Groundwater Assessment\GW Assessment_SDG edits.docx
2.0 Site Investigation
Based on the observation of a stained trench drain located within the interior of the Site structure and the
potential for materials that were disposed of through the trench drain to have impacted the Site, Altamont
was engaged to complete a limited groundwater assessment within the boundaries of the Site on March 18,
2015.
The completed scope of work involved the installation and collection of groundwater samples from three
temporary groundwater monitoring wells.
Once collected, groundwater samples were submitted for analysis of volatile organic compounds (VOCs) and
semivolatile organic compounds (SVOCs) according to United States Environmental Protection Agency (EPA)
methods 8260 and 8270, respectively.
Groundwater analytical results were compared to North Carolina Administrative Code (NCAC) 02L .0202
groundwater standards (2L standards). The groundwater data was also compared to the North Carolina
Inactive Hazardous Sites Branch (IHSB), Vapor Intrusion Screening Levels, in order to complete a preliminary
assessment of potential vapor intrusion risk into future Site structures.
2.1 Health and Safety Information
Prior to initiating field activities at the Site, Altamont and subcontracted personnel participated in an initial
review of the Site Health and Safety Plan. In addition, a health and safety “tailgate” meeting was held prior
to conducting field work.
2.2 Monitoring Well Installation and Groundwater Assessment
Before initiating intrusive activities, Altamont contacted the North Carolina One-Call Center to identify public
utilities at the Site. Due to the likely presence of multiple utilities on and near the Site, a private utility locate
was also conducted.
Altamont observed the installation of three temporary groundwater monitoring wells at the Site on March 18,
2015. Monitoring wells were installed by a North Carolina licensed drilling company. The monitoring well
locations are shown as TMW-1 through TMW-3 on Figure 2 and were situated to evaluate potential
groundwater impacts caused by the reported disposal of solvent-based compounds into an on-Site trench
drain.
The three temporary groundwater monitoring wells were installed using 4-¼-inch hollow-stem-auger (HSA)
drilling technique. The monitoring wells were constructed of 2-inch nominal inside-diameter (ID) Schedule 40
polyvinyl chloride (PVC) pipe. A 0.010-inch machine-slotted PVC screen was set to intersect the water table
at each well location. Each temporary groundwater monitoring well was then completed by a licensed North
Carolina well drilling contractor in accordance with applicable regulations.
2.2.1 Monitoring Well Development
After installation, each monitoring well was developed using the surge-and-bail method with a submersible
pump. Wells were surged by rapidly moving the pump up and down in the well column. Approximately three
to five well volumes were purged from each well to remove sediment from the well and to set the sand filter
pack.

Limited Groundwater Assessment Report August 19, 2015
Former Burnsville Hosiery Mill, Burnsville, North Carolina Page 3

P:\Winter Star Corporation\Groundwater Assessment\GW Assessment_SDG edits.docx
2.2.2 Monitoring Well Sampling
Groundwater samples were collected from each of the newly installed temporary monitoring wells.
Groundwater samples were analyzed for VOCs and SVOCs by EPA Method 8260 and 8270, respectively.
A groundwater sample was collected from each well, with a dedicated polyethylene bailer, after three well
volumes had been purged or the well was purged dry and allowed to recharge. The samples were then
collected in laboratory-provided sample containers and placed in a cooler on ice for delivery to the Prism
Laboratories, Inc of Charlotte, North Carolina.
After water samples were collected, the three temporary groundwater monitoring wells were abandoned by
Mountain Evnironmental Services, Inc of Canton, North Carolina a North Carolina licensed well drilling
contractor.

Limited Groundwater Assessment Report August 19, 2015
Former Burnsville Hosiery Mill, Burnsville, North Carolina Page 4

P:\Winter Star Corporation\Groundwater Assessment\GW Assessment_SDG edits.docx
3.0 Results
A sample location map is included as Figure 2. Groundwater analytical data is provided on Table 1 and the
laboratory analytical report is included as Appendix A.
Groundwater analytical results are summarized below.
• Groundwater Sample TMW-1
° No constituents of concern were reported above laboratory detection limits.
• Groundwater Sample TMW-2
° No constituents of concern were reported above laboratory detection limits.
• Groundwater Sample TMW-3
° Tetrachloroethylene (PCE) was reported above the 2L standard.

Limited Groundwater Assessment Report August 19, 2015
Former Burnsville Hosiery Mill, Burnsville, North Carolina Page 5

P:\Winter Star Corporation\Groundwater Assessment\GW Assessment_SDG edits.docx
4.0 Conclusions
Concentrations of PCE were reported above the 2L groundwater quality standard in one sample, TMW-3.
However, analyzed constituents were not reported above laboratory detection limits in the other samples.
The identified concentration of PCE did not exceed the IHSB residential or non-residential vapor intrusion
screening level.

FIGURES

Copyright:© 2013 National Geographic Society, i-cubed

0 0.25 0.5
Miles
1



¦
Data Sources:
USGS Topographical Quadrangle 2014
Subject Site - Yancey County GIS 2010
Site Location
P:\Winter Star Corporation\Figures\Figure 1 - Site Location.mxd


Site Location
!U
!U
!U
Storage
OfficesManufacturing Floor
Dyeing
Room
Boiler Room
Boiler Room Storage
Lunch/Break
RoomTMW-3
TMW-2
TMW-1
Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus
DS, USDA, USGS, AEX, Getmapping, Aerogrid, IGN, IGP, swisstopo, and
the GIS User Community





FIGURE2



¦

!U Temporary Groundwater Monitoring Well
Subject Site Parcel
P:\Winter Star Corporation\Groundwater Assessment\Figure 2.mxd








TABLE

Table 1
Groundwater Analytical Results
Groundwater Assessment
54 Ferguson Hill Road
Burnsville, North Carolina
Volatile Organic
Compounds (8260)
Te
t
r
a
c
h
l
o
r
o
e
t
h
y
l
e
n
e
µg/L
TMW-1 03/18/2015 <0.50
TMW-2 03/18/2015 <0.50
TMW-3 03/18/2015 1.6
0.7
11.5
48.4
Notes:
1. µg/L - micrograms per liter.
4. Bold = Exceedance of standard.
6. 15A NCAC 02L.0202 Groundwater Standard (April 2013)
3. Only detected constituents are listed on this table. For a complete list of analytes please see the
laboratory analytical report.
2. Volatile organic compounds (VOCs) analyzed according to US Environmental Protection Agency (EPA)
Method 8260.
5. Inactive Hazardous Sites Branch (IHSB) Division of Waste Management (DWM) Vapor Intrusion
Screening Levels (June 2014).
IHSB Non-Residential Vapor Intrusion Screening Levels
15A NCAC 02L .0202 Groundwater Standards
Sample
Identification Sample Collection Date
IHSB Residential Vapor Intrusion Screening Levels
P:\Winter Star Corporation\Groundwater Assessment\Tables\Groundwater Table Page 1 of 1

APPENDIX A

Analytical Data

Page 1 of 28
Page 2 of 28
Page 3 of 28
Page 4 of 28
Page 5 of 28
Page 6 of 28
Page 7 of 28
Page 8 of 28
Page 9 of 28
Page 10 of 28
Page 11 of 28
Page 12 of 28
Page 13 of 28
Page 14 of 28
Page 15 of 28
Page 16 of 28
Page 17 of 28
Page 18 of 28
Page 19 of 28
Page 20 of 28
Page 21 of 28
Page 22 of 28
Page 23 of 28
Page 24 of 28
Page 25 of 28
Page 26 of 28
Page 27 of 28
Page 28 of 28