HomeMy WebLinkAbout15004_Gastonia Poplar_Brownfields Assessment Report 20141024
Brownfields Assessment Report
Former National Textiles Facility
1925 West Poplar St.
Gastonia, North Carolina
Brownfields Project ID 15004-11-36
October 24, 2014
H&H Job No. FDP-025
s:\aaa-master projects\forsite development partners (fdp)\fdp-025 national textile phase ii esa\brownfields\brownfields assessment\brownfields assessment report.doc
Brownfields Assessment Report
Former National Textiles Facility
1925 West Poplar St.
Gastonia, North Carolina H&H Job FDP-025
Table of Contents
Section Page No.
1.0 Introduction and Background ........................................................................................... 1
1.1 Brief Site History .................................................................................................................. 1
1.2 Previous Assessment and Remedial Activities ..................................................................... 2
1.3 Brownfields .......................................................................................................................... 2
2.0 Assessment Activities .......................................................................................................... 3
2.1 Soil Sampling ....................................................................................................................... 3
2.2 Sub-slab Soil Vapor Sampling ............................................................................................. 3
3.0 Results .................................................................................................................................. 5
3.1 Soil Sampling Results ............................................................................................................ 5
3.2 Sub-Slab Soil Vapor Sampling Results ................................................................................. 5
4.0 Summary and Recommendations ...................................................................................... 7
Tables
Table 1 Summary of Soil Analytical Data
Table 2 Summary of Sub-Slab Vapor Sample Data
Figures
Figure 1 Site Location Map
Figure 2 Sample Location Map
Appendix
Appendix A Soil Boring Log
Appendix B Laboratory Analytical Reports
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Brownfields Assessment Report
Former National Textiles Facility
1925 West Poplar St.
Gastonia, North Carolina H&H Job FDP-025
1.0 Introduction and Background
Hart & Hickman, PC (H&H) has prepared this Brownfields Assessment Report for the former
National Textiles facility located at 1925 West Poplar St. in Gastonia, North Carolina. A site
location map is included as Figure 1.
1.1 Brief Site History
The subject property consists of approximately 6 acres of land that was historically developed
with a cotton spinning mill beginning in 1918. Prior to a recent fire, the facility consisted of
multiple structures and associated utility sheds encompassing approximately 180,000 square feet.
Hanesbrands occupied the facility until September 2008 and manufactured yarn products from
cotton. Processes included blowing/bailing, carding, combing, roping, drawing, spinning,
steaming, packing and palletizing. According to Hanesbrands personnel, chemical usage was
very limited in the direct manufacturing process. The major components of the processes were
cotton fiber, water, and air. Since 2011, the facility has been used for warehousing and storage
for various occupants.
In 2013, there was a major fire at the facility and a number of buildings were destroyed. Figure 2
depicts the building area that was destroyed and removed following the fire as well as the areas
where structures remain. The northwestern remaining building is approximately 36,500 square ft
and is used for warehousing by R&R Resources which performs textile recycling. The
southeastern remaining building is approximately 79,000 sq ft and is vacant. The southeastern
building contains a lower level that is approximately 33,000 sq ft, an upper level that is 39,000 sq
ft, and a loading dock area that is approximately 7,000 sq ft.
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1.2 Previous Assessment and Remedial Activities
In January 2011, H&H conducted a Phase II Environmental Site Assessment (ESA) at the former
National Textiles facility to determine if historic site activities had resulted in a release to site
soils or groundwater. H&H advanced and screened five soil borings and collected three soil
samples in the vicinity of two former underground storage tanks (USTs). H&H also installed a
temporary monitoring well (TW-1) and collected one groundwater sample downgradient of a
historic machine shop at the property.
No soil impacts were identified in the collected soil samples. As such, there is no evidence of
soil impact associated with the former USTs. The compound tetrachloroethene (PCE) was
detected in the groundwater sample collected near the former machine shop at a very low
concentration of 3.47 µg/l, which slightly exceeds its North Carolina groundwater standard of
0.7 µg/l. No other compounds exceeded groundwater standards.
1.3 Brownfields
In a letter dated March 3, 2011, the site was determined eligible for the Brownfields program. In
a letter dated September 8, 2011, the North Carolina Department of Environment and Natural
Resources (DENR) Brownfields Section requested additional assessment at the site. Because of
the changes to the site as a result of the fire, H&H requested revisions to the scope of work.
DENR issued a revised additional assessment letter for the site dated December 10, 2013, and
requested that a work plan be submitted prior to implementation. A Brownfields Assessment
Work Plan dated January 29, 2014 was subsequently submitted to DENR, and the work plan was
approved in a letter dated January 30, 2014. The Brownfields assessment activities included soil
sampling near a transformer area and collection of sub-slab soil vapor samples from below the
remaining warehouse areas. The following sections present the methods and results of the
Brownfields assessment activities.
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2.0 Assessment Activities
2.1 Soil Sampling
On February 26, 2014, one shallow soil sample was collected adjacent to the transformer station
in the central portion of the site. The location of the soil sample is indicated in Figure 2. The
soil sample was collected with a stainless steel hand auger and the boring was advanced to a
depth of approximately 5 ft. The soil samples were field screened with a photoionization
detector (PID). No significant evidence of soil impact was observed in the field, although the
highest PID reading (2.6 ppm-v) was obtained at a depth of 4 to 5 ft. Therefore, the 4 ft to 5 ft
sample interval was selected for laboratory analysis. The soil sample was analyzed for
polychlorinated biphenyls (PCBs) by EPA Method 8082 and for hazardous substance list (HSL)
metals plus hexavalent chromium. The soil boring log including PID readings is included in
Appendix A, and the results of the laboratory analysis are discussed in Section 3.0.
2.2 Sub-slab Soil Vapor Sampling
To assess the potential for vapor intrusion into the site buildings from underlying soil and/or
groundwater impacts, H&H collected four sub-slab soil vapor samples at the site on February 26,
2014 (SSVP-1, SSVP-2, SSVP-3, and SSVP-4). The sub-slab soil vapor sample locations are
indicated in Figure 2. As shown on Figure 2, SSVP-1 and SSVP-2 were collected in the
northwestern building, and SSVP-3 and SSVP-4 were collected in the southeastern building.
The samples from the southeastern building were collected from the ground level of the building.
At each sample location, H&H drilled through the concrete floor utilizing a concrete hammer
drill and an approximate 1.5-inch diameter bit. Through each of the drilled holes, H&H installed
an approximate 0.625-inch diameter stainless steel probe with approximate 2-inch long bottom
screen point. The probes were installed through the gravel beneath the concrete slab and seated
in the underlying soil so that the soil gas probe screen is present in both the soil and overlying
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gravel (approximately 6-inches below the top of the slab).
After the point was installed at the desired depth, each point was sealed at the surface of the
concrete slab using hydrated bentonite. The soil gas probes were completed at the surface using
a sample valve and Teflon tubing. Prior to sampling, a field leak check was conducted at each
vapor monitoring point by constructing a shroud around the sampling point and saturating the air
within the shroud with helium gas. Using a syringe, a sample was collected from the gas in the
shroud into a Tedlar® bag and analyzed for helium concentrations using a helium gas detector.
Vapor from the vapor monitoring point was then purged and sampled outside of the shroud into a
separate Tedlar® bag and analyzed using the helium gas detector to ensure that helium
concentrations are less than 5% of the helium concentrations in the shroud.
Following a successful field leak check, vapor samples were collected into six-liter Summa
canisters for laboratory analysis. The Summa canisters were allowed to fill slowly using an
airflow regulator over a period of approximately one hour. During sampling at each location, a
helium tracer gas atmosphere was maintained at the surface of each soil vapor point to
demonstrate that there was not short circuiting to the surface during the test. The helium gas
atmosphere was created by saturating the air within the shroud at the sample location with helium
gas. To ensure a sufficient helium atmosphere was maintained during sampling, H&H monitored
helium levels within the shroud and added helium as needed to maintain an 80 to 90% helium
atmosphere.
In addition, as part of the testing H&H collected measurements of ambient temperature at the
beginning, middle, and end of the sampling day.
Once the soil vapor samples were collected, the canisters were shipped to Con-Test Analytical
Laboratories for analysis of VOCs by EPA Method TO-15 and for helium by EPA Method 3C.
The results of analysis of the sub-slab soil vapor samples are presented in the following section.
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3.0 Results
3.1 Soil Sampling Results
The results of analysis of the soil sample collected adjacent to the transformer area are
summarized on Table 1, and the laboratory report along with chain of custody is included in
Appendix B. The results indicate that PCBs were not detected above laboratory detection limits.
Several metals were detected in the soil sample but at concentrations generally consistent with
background ranges. Lead and zinc concentrations were detected slightly above typical
background ranges; however, the lead and zinc concentrations were less than the DENR Inactive
Hazardous Sites Branch (IHSB) Preliminary Residential and Industrial Soil Remediation Goals.
3.2 Sub-Slab Soil Vapor Sampling Results
The results of the analysis of the sub-slab vapor samples indicated are summarized in Table 2,
and the laboratory analytical data are provided in Appendix B. The results were compared to the
DENR Division of Waste Management (DWM) Non-Residential Soil Vapor Screening Levels.
The screening levels are conservative and are based upon a hazard quotient of 1 for potential
non-carcinogenic risks and a lifetime incremental cancer risk (LICR) of 1 x 10-5 for potential
carcinogenic risks.
Results of the helium analysis did not indicate the presence of helium in any sample collected
indicating that there was no significant short-circuiting to atmospheric air during sample
collection. Ambient temperature ranged from 52 F to 55 F at each of the sampling points during
the sampling period.
The results of analysis of the samples indicate the presence of low levels of compounds in all of
the sub-slab soil vapor samples. The highest compound concentrations were generally found in
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sample SSVP-3 from the southeastern building. In this sample, the primary compound of
concern detected in groundwater PCE was detected at a concentration of 190 µg/m3 which is less
than the DENR DWM Non-Residential screening level of 3,500 µg/m3. No compounds in any of
the samples were detected above the Non-Residential soil vapor screening levels.
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4.0 Summary and Recommendations
H&H has performed Brownfields assessment activities at the former National Textiles facility in
accordance with our approved work plan. The results of analysis of the soil sample collected
adjacent to the transformer area did not indicate the presence of PCBs above detection limits. In
addition, metals were not detected at levels of potential concern. Previous soil sampling
conducted in 2011 also did not indicate the presence of compounds in soil at levels of potential
concern at the site.
Results of analysis of sub-slab soil vapor samples collected below the two buildings did not
indicate any compounds above conservative DENR DWM Non-Residential Soil Vapor
Screening Levels. As such, H&H does not recommend additional vapor intrusion assessment or
vapor intrusion mitigation for the two existing buildings.
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Table 1 (Page 1 of 1)
Summary of Soil Analytical Data
Former National Textiles
Gastonia, North Carolina
H&H Job No. FDP-025
S:\AAA-Master Projects\ForSite Development Partners (FDP)\FDP-025 National Textile Phase II ESA\Brownfields\Brownfields Assessment\Table.xlsx
10/24/2014
Table # (Page 1 of 1)
Hart & Hickman, PC
Sample ID SB-1
Depth (ft bgs)4-5
Sample Date 2/26/2014 Residential Industrial
Units (mg/kg)(mg/kg)(mg/kg)
PCBs (8082)All BRL ----
HSL Metals (6010/7471)Range Mean
Antimony <3.0 6.2 94.0 <1 - 8.8**0.67**
Arsenic 3.2 0.67 3 1.0 - 18 4.8
Beryllium 1.1 32 460 ND - 2.0 0.11
Cadmium 0.59 14 200 1.0 - 10*4.3*
Total Chromium 12 ----7.0 - 300 65
Hexavalent Chromium <0.95 0.3 6 ----
Trivalent Chromium 12 24,000 100,000 ----
Copper 63 620 9400 3.0 - 100 34
Lead 90 400 800 ND - 50 16
Manganese 100 360 5200 8.0 - 3,394*594*
Mercury 0.050 4.6 70 0.03 - 0.52 0.121
Nickel 6.8 300 4400 ND - 150 23
Silver <0.59 78 1200 ND - 5**--
Zinc 170 4600 70000 25 - 124 56
Notes:1) Inactive Hazardous Sites Branch (IHSB) Preliminary Soil Remediation Goals (PSRGs) dated September 2014 (mg/kg)
2) North Carolina Background Metals in soil from Elements in North American Soils by Dragun and Chekiri, 2005 (mg/kg)
* Values for North Carolina not provided; values are for Southeastern US
** Values for North Carolina not provided; values are for Conterminous USOnly those compounds detected in at least one sample shown above
Method number follows parameter in parenthesis
PCBs = polychlorinated biphenyls; HSL = Hazardous Substance List
BRL = Below reporting Limit -- = Not applicable;mg/kg = milligrams per kilogram
Background Metals
in Soil2
DENR IHSB PSRGs1
Table 2 (Page 1 of 2)
Summary of Sub-Slab Soil Vapor Analytical Data
Former National Textiles
Gastonia, North Carolina
H&H Job No. FDP-035
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Table 2 (Page 1 of 2)
Hart & Hickman, PCAcetoneBenzeneBromodichloromethaneMethyl ethyl ketone (MEK) (2-Butanone)Carbon disulfideCarbon TetrachlorideChloroethaneChloroformMethyl chloride (Chloromethane)CyclohexaneDibromochloromethane1,2-Dichlorobenzene1,4-DichlorobenzeneDichlorodifluoromethane (Freon 12)1,1-Dichloroethane1,2-Dichloroethane1,1-Dichloroethene (1,1-DCE)cis-1,2-Dichloroethene (cis-1,2-DCE)trans-1.2-Dichloroethene(trans-1,2-DCE)1,2-Dichloro-1,1,2,2-tertrafluoroethane (Freon 114)EthanolEthylbenzene4-EthyltolueneHeptaneHexaneSSVP-1 Northwest Building 02/26/14 TO-15 110 1.4 <0.67 9.9 J 7.0 0.42 J <0.26 1.6 0.42 <0.34 <0.85 0.17 J 0.18 J 2.7 <0.40 <0.40 <0.40 <0.40 <0.40 <0.70 20 1.2 0.39 J 0.57 1.2 J
SSVP-2 Northwest Building 02/26/14 TO-15 45 B 1.3 0.82 7.5 J 6.9 0.47 J <0.26 11 <0.41 <0.34 <0.85 0.29 J <0.60 2.9 <0.40 <0.40 <0.40 <0.40 <0.40 <0.70 5.7 J 0.79 0.29 J 0.69 1.7 J
SSVP-3 Southeast Building 02/26/14 TO-15 86 B 0.98 6.0 5.3 J 13 0.58 J 0.20 J 32 0.68 0.65 0.83 J <0.60 <0.60 630 2.3 0.11 J 24 0.25 J 0.12 J 1.3 13 2.9 0.38 J 0.44 1.1 J
SSVP-4 Southeast Building 02/26/14 TO-15 34 0.86 5.0 5.3 J 18 0.54 J <0.26 320 0.25 J <0.34 <0.85 <0.60 <0.60 130 <0.40 <0.40 <0.40 <0.40 <0.40 <0.70 14 0.76 0.47 J 0.36 J 1.2 J
2,720,000 1,570 331 438,000 61,300 2,040 NS 533 7,880 87,600 454 17,500 1,110 8,760 7,670 472 17,500 NS NS NS NS 4,910 NS NS 61,300
Notes
Only compounds detected in at least one sample shown
DMW = Division of Waste Management
NS = Not Specified
µg/m3 = micrograms per cubic meter
* = Screening level for 1,3,5-Trimethylbenzene used as a surrogate for screening level for 1,2,4-Trimethylbenzene
J = Value indicates compound detected but below the reporting limit; result is an estimated concentration
B = Compound also detected in the method blank for the sample
DWM Non-Residential Soil Gas Screening Level (June 2014)Sample IDSample LocationSampling Date Analytical Methodµg/m3
Table 2 (Page 2 of 2)
Summary of Sub-Slab Soil Vapor Analytical Data
Former National Textiles
Gastonia, North Carolina
H&H Job No. FDP-035
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Table 2 (Page 2 of 2)
Hart & Hickman, PC2-Hexanone (MBK)IsopropanolMethylene ChlorideMethyl Isobutyl Ketone (4-methyl-2-pentanone)StyreneTetrachloroethene (PCE)TetrahydrofuranToluene1,1,1-TrichloroethaneTrichloroethene (TCE)Trichlorofluoromethane (Freon 11)1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneXylene, m- & p-Xylene, o-SSVP-1 Northwest Building 02/26/14 TO-15 1.8 12 1.2 J 2.6 1.9 78 0.60 2.5 0.13 J 0.86 1.9 0.63 J 1.5 0.45 J 4.2 1.5
SSVP-2 Northwest Building 02/26/14 TO-15 1.6 4.0 J 1.1 J 2.0 1.3 5.0 0.40 1.9 0.55 <0.54 3.4 0.55 J 1.2 0.39 J 3.6 1.7
SSVP-3 Southeast Building 02/26/14 TO-15 1.4 12 1.6 J 1.2 1.8 190 0.55 1.5 410 7.5 1,500 1.2 1.6 0.40 J 11 4.7
SSVP-4 Southeast Building 02/26/14 TO-15 1.2 9.5 J 2.1 1.1 2.9 0.75 0.48 1.7 2.8 0.68 330 0.93 1.7 0.52 3.1 1.1
2,630 NS 52,600 263,000 87,600 3,500 175,000 438,000 438,000 175 61,300 2,630,000 613 613*8,760 8,760
Notes
Only compounds detected in at least one sample shown
DMW = Division of Waste Management
NS = Not Specified
µg/m3 = micrograms per cubic meter
* = Screening level for 1,3,5-Trimethylbenzene used as a surrogate for screening level for 1,2,4-Trimethylbenzene
J = Value indicates compound detected but below the reporting limit; result is an estimated concentration
DWM Non-Residential Soil Gas Screening Level
µg/m3Sampling Date Analytical MethodSample IDSample Location
TITLE
PROJECT
SITE LOCATION MAP
NATIONAL TEXTILES FACILITY1925 WEST POPLAR STREETGASTONIA, NORTH CAROLINA
DATE:
JOB NO:
REVISION NO:
FIGURE NO:
01-17-11 0
1FDP-025
0 2000 4000
APPROXIMATE
SCALE IN FEETN
U.S.G.S. QUADRANGLE MAP
QUADRANGLE
7.5 MINUTE SERIES (TOPOGRAPHIC)
GASTONIA NORTH, NC 1993
SITE
Appendix A
Soil Boring Log
S:\AAA-Master Projects\ForSite Development Partners (FDP)\FDP-025 National Textile Phase II ESA\Brownfields\Brownfields Assessment\Brownfields Assessment Report.doc
0.2
1.7
1.8
1.7
1.8
2.6
Gravel
Dry, slightly dense, red orange, clayey silty SAND
Dry, slightly dense, gray to black, silty SAND
Bottom of borehole at 5.0 feet.
0
0
0
0
0
0GB
DRAWN BY:JRL
BORING COMPLETED:2/26/14
DRILLING CONTRACTOR:H&H Remarks:
DRILL RIG/ METHOD:Hand Auger / Hand Auger
SAMPLING METHOD:Hand Auger Sample collected from 4ft to 5ft bgs forPCBs and HSL metals
BORING STARTED:2/26/14
LOGGED BY:CBL
TOTAL DEPTH: 5 ft.
TOP OF CASING ELEV:
DEPTH TO WATER:DEPTH(ft)DEPTH(ft)LITHOLOGYRECOVERY (%)SAMP.MATERIAL DESCRIPTIONOVA (ppm)BKG.SAMPLE TYPENUMBERBORING DIAGRAM
Sheet 1 of 1
BORING NUMBER SB-1
PROJECT:Foresite Development Partners
JOB NUMBER:FDP-025
LOCATION:Gastonia, North Carolina
BORING LOG - HART HICKMAN.GDT - 6/17/14 12:52 - S:\AAA-MASTER GINT PROJECTS\FDP-025 2014.GPJ2923 South Tryon Street-Suite 100
Charlotte, North Carolina 28203
704-586-0007(p) 704-586-0373(f)
3334 Hillsborough Street
Raleigh, North Carolina 27607
919-847-4241(p) 919-847-4261(f)
0.0
2.5
5.0
0.0
2.5
5.0
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Appendix B
Laboratory Analytical Reports
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