18044 LRMF Parcel 32 Soil Removal Work Plan_20160426

Hazardous Soil Treatment and Removal
Work Plan and Groundwater Sample Results
NC DOT Parcel 32

Charlotte Locomotive and Railcar
Maintenance Facility
Charlotte, Mecklenburg County
North Carolina

H&H Job No. ROW-508
State Project P-3800
WBS Element #49999.1.STR8
April 26, 2016

Via Email

April 26, 2016

NC DEQ - Brownfields Program
1646 Mail Service Center
Raleigh, NC 27699-1646

Attention: Ms. Carolyn Minnich

Re: Hazardous Soil Removal Work Plan and Groundwater Sample Results
Charlotte Locomotive and Railcar Maintenance Facility
NC DOT State Project No. P-3800
Brownfields Project No. 18044-14-060
Charlotte, Mecklenburg County, North Carolina
H&H Job No. ROW-508

Dear Carolyn:
1.0 Introduction

On behalf of the North Carolina Department of Transportation (NC DOT), Hart and Hickman,
PC (H&H) is submitting this work plan to conduct on-site treatment and placement of lead
impacted soil exceeding the characteristically hazardous waste threshold located at the proposed
Charlotte Locomotive and Railcar Maintenance Facility in Charlotte, Mecklenburg County. NC
DOT is planning to develop multiple parcels for the new locomotive and railcar maintenance
facility. The hazardous lead soil is located at 1320 S. Graham Street (NC DOT Parcel 32) near
the center of the proposed project area. Because this lead impacted soil area is on the above
referenced Brownfields site, this plan is being provided for your review with copy to Ms. Harvi
Cooper of the NC DEQ Hazardous Waste Section. A site location map is included as Figure 1.

NC DOT would like to treat the hazardous lead soil to non-hazardous levels on-site with the
option to reuse the treated soil in a proposed berm (see Figure 2) on the Brownfields site or
dispose of the treated soil in a permitted Subtitle D landfill. Based on recent conversations
between NC DOT and H&H, the treated soil will likely be disposed in a landfill. The following
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work plan provides a brief project background and proposed activities to treat, remove, and reuse
or dispose of hazardous soil from Parcel 32.

2.0 Background

In September 2014, H&H conducted Preliminary Site Assessment (PSA) activities on the Parcel
32 property. The PSA was conducted to determine if impacted soil is present in the proposed
construction areas related to the proposed Charlotte Locomotive and Railcar Maintenance
Facility. As part of the PSA activities, H&H reviewed historical documents for Parcel 32.
Review of the City Directory Abstract, Sanborn maps, and aerial photographs provided by
Environmental Data Resources, Inc. indicate that the property was previously occupied by a
junkyard. The junkyard is identified as Smith Metal and Iron. The junkyard operated from the
1920s to mid-1970s. Multiple Sanborn maps identify a former battery storage building in the
northeast portion of the site.

During the PSA activities, 20 soil borings were advanced over the entire property. Analytical
results of soil samples collected from the soil borings indicated the presence of wide spread
impacts in soil at the site. The primary contaminants are polychlorinated byphenyls (PCBs),
total petroleum hydrocarbons (TPH), and metals (particularly lead). Concentrations of these
constituents exceed NC DEQ screening levels in most of the soil samples collected at the site.
PCB concentrations do not exceed the TSCA regulatory level. In addition, concentrations of
lead were detected above the characteristically hazardous waste threshold for lead in several
borings advanced at the site. The impacted soil data and maps are shown on the table and
figures from the PSA (Appendix A).

The NC DOT project will require soil (including impacted soil) to be cut from the northern
portion of the Parcel 32 property. Soil impacted with TPH and lead is located in the cut area.
Concentrations of total lead (up to 28,700 mg/kg) and Toxicity Characteristic Leaching
Procedure (TCLP) lead (398 mg/L) were detected in soil samples collected in this area. The
TCLP lead exceeds the characteristically hazardous waste threshold (5 mg/L) for lead. The
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hazardous lead soil area is shown on Figure 5 from the PSA in Appendix A and is also shown on
Figure 2 of this work plan. H&H estimates that there are roughly 550 cubic yards of hazardous
lead impacted soil between the surface and four ft in this area.

This work plan has been developed to address removal of the hazardous lead soil. Other
impacted soil in the area will be addressed separately as part of an Environmental Management
Plan. NC DOT is seeking NC DEQ approval to allow hazardous impacted soil to be treated on-
site to non-hazardous levels with the option to reuse the treated soil in an on-site berm or dispose
of the soil in a permitted Subtitle D landfill.

3.0 Scope of Work

3.1 Project Planning and Preparation

Soil stabilization will be conducted by mixing EnviroBlend (or equivalent) with the impacted
soil in-place. The blending compound is a magnesium oxide powder blend that stabilizes and
binds soil metals to lower metal leachability. Prior to conducting soil removal and stabilization
activities, a bench test was conducted by Premier Magnesia to determine the proper dosage of
EnviroBlend to use during stabilization activities. H&H provided a soil sample from the
location exhibiting the highest lead impacts previously detected in the impacted soil area. Based
on the bench test the amount of EnviroBlend required for stabilization will equal approximately
5 percent of the weight of the impacted soil.

Prior to treatment activities, H&H will prepare a site-specific Security Plan and a Health &
Safety Plan (SP&HSP). The purpose of the SP&HSP is to control access to the site during
remedial activities and to manage potential safety concerns for on-site workers. The existing
fence that currently encompasses the Parcel 32 property will be utilized to secure the work zones
during remedial activities. Based on the small area to be disturbed, erosion and sediment control
measures are not required. H&H will obtain approval from the landfill for disposal of the non-
hazardous material by the landfill if this disposal option is chosen. In that event, the non-
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hazardous material will likely be disposed at the Charlotte Motor Speedway Landfill in Concord,
North Carolina.

3.2 Soil Removal and Stabilization

Prior to mixing activities, the impacted soil area will be marked with wooden stakes. The soil
stabilization activities will be conducted by a NC DOT approved experienced environmental
remediation contractor. The impacted soil will remain within the footprint of the target
treatment area during subsequent stabilization. During stabilization activities, H&H will direct
the contractor to mix soil within the staked area to a depth of four ft bgs using an excavator.
Please note that only soil within and near the proposed cut area will be excavated for treatment
and off-site removal. The approximate aerial extent of hazardous lead impacted soil to be treated
is shown on Figure 2.

After blending of the EnviroBlend and soils is completed, the stabilized material will remain in-
place and confirmation samples will be collected as described below. After confirmation
sampling, the treated soil will be covered and protected from rainfall to prevent run-off while
awaiting confirmation sampling results.

3.3 Confirmation Sampling

Upon completion of excavation activities H&H will collect confirmatory samples to confirm that
the soil has been treated to non-hazardous levels. Composite soil samples will be collected in
triplicate using the incremental sampling procedure in accordance with Interstate Technology &
Regulatory Council (ITRC) incremental sampling protocol provided by Harvi Cooper of DEQ.
In accordance with the sampling protocol, the blended soil area (decision unit) will be sampled
from a minimum of 30 locations. The locations will be selected using a systematic random
approach so that a 95 % Upper Confidence Level (UCL) can be calculated for comparison to
regulatory screening levels. If the percent Relative Standard Deviation (%RSD) between the
three replicates from the decision unit is less than 30%, then the sampling design and execution
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are likely to be adequate, and the distribution of replicate results can be assumed to be
approximately normal. The 30% RSD limit is a general guideline and if an estimated mean
concentration from the decision unit is many times greater than or less than an action level or
screening value, a much larger %RSD and high degree of uncertainty may not affect data
usability. The %RSD can be calculated using an ITRC calculator for the calculation of weighted
95% UCLs for a decision unit.

Prior to sampling, the decision unit will be divided into a grid of 30 cells. The perimeter of the
decision unit will be outlined with flags and the rows for the grid cells will be marked. Once the
size of a grid is determined, the sample collector can determine the distance from one sample
(increment) location to the next and move through the decision unit collecting the increments in
the appropriate zip lock bag. Using the systematic random sampling approach, a random
sampling location is identified in the first grid cell and then sample increments are obtained from
adjacent cells sequentially in a serpentine pattern using the same relative location within each
cell. The initial composite sample will be collected by advancing a soil boring to the midpoint of
the total depth of the blended soil at a similar location in each cell. Because the soil will be
mixed, multiple sampling intervals will not be required. Soil borings will be advanced using a
stainless steel hand auger or direct push drilling rig. An aliquot of soil will be collected from the
midpoint of the treatment depth in each boring and placed into the same zip lock bag, labeled,
and placed in a cooler on ice. Two replicate samples will then be collected from separate boring
locations from within in each grid cell using the same method as the original sample. Each
incremental sample location will be marked with a flag after collecting from that point using
different color flags for each of the three replicates. Three large zip lock bags will each contain
30 soil increments representing a replicate within the decision unit.

The bags with composited soil will be placed on ice and submitted to Prism Laboratories under
chain of custody protocol. If the soil is to be reused on-site, the samples will be analyzed by the
Multiple Extraction Procedure (MEP) for lead using EPA Method 1320, which is considered to
be a more rigorous analysis than traditional TCLP analysis. The MEP consists of an initial
Extraction Procedure Toxicity Test (EP TOX) followed by nine Synthetic Acid Rain Extractions.
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Based on conversations between H&H and NC DEQ, MEP analysis can be stopped after 4 to 6
extractions if results indicate a downward trend and are stable for at least 3 extractions. If NC
DOT chooses to dispose of the treated soil in a Subtitle D landfill, the composite samples will be
analyzed for TCLP RCRA Metals by EPA Method 1311 in lieu of the MEP method. The
laboratory will utilize incremental subsampling procedures to collect the appropriate amount of
sample for extraction and analytical methods selected. For MEP SW-846 Method 1320 and/or
TCLP SW-846 Method 1311 procedures, the laboratory will use the incremental subsampling
procedures to collect 100 grams from each replicate sample for the selected extraction
procedure(s) followed by analysis of the extract for lead or RCRA Metals by SW-846 Methods
6010C and/or 7470. For total lead or total RCRA metals the lab will use incremental
subsampling procedures to collect 30 grams from each replicate for extraction and analysis by
SW-846 Methods 6010C and/or 7470.

3.4 Potential Leaching of Treated Soil

Although the treated soil will likely be disposed in a landfill, NC DOT’s initial preference was to
reuse the soil in an on-site berm. Because the treated soil may be placed in an on-site berm, NC
DEQ requested groundwater results to determine if lead impacted soil would be treated
sufficiently such that it would not leach to groundwater in excess of the higher of the current
groundwater concentrations or the groundwater standard. In an effort to show that the treated
soil would not leach to groundwater, H&H installed and sampled groundwater from a temporary
monitoring well (TW-2) immediately downgradient of the hazardous lead impacted soil area on
Parcel 32.

Based on the laboratory analytical data, there were no detections of lead in the groundwater
sample; however, there were low levels of manganese, nickel, and zinc. Only manganese (0.64
mg/L) exceeded the 2L Standard (0.05 mg/L). The manganese may be naturally occurring, and
no 2B Surface Water Standard exists for manganese. The analytical results are shown on the
attached Table 1, and the well location (TW-2) is shown on Figure 2. Groundwater analytical
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results for temporary monitoring well 32-TW-1 installed at the site during previous PSA
activities are also included in Table 1. The laboratory report is attached in Appendix B.

Because groundwater is not impacted with lead near the hazardous lead impacted soil area which
has been in place for decades, the lead impacted soil once treated and moved to the berm
location should not leach to groundwater. Based on these results, H&H recommends allowing
the treated soil to be used in the base of the proposed berm if this option is chosen.

3.5 Treated Soil Disposition

After the impacted soil has been determined to be non-hazardous based on confirmation
sampling results, NC DOT proposes to remove the soil from the site with the option to reuse soil
in an on-site proposed berm or dispose of the soil in a Subtitle D landfill. As discussed in
Section 3.6 below, the hazardous lead impacted soil needs to be stabilized and removed from the
site before July 2016. The treated soil will likely be disposed in a Subtitle D landfill; however,
NC DOT is requesting approval of both soil removal options discussed below.

Option 1: Soil will be placed in a proposed berm on the Brownfields site. NCDOT is planning
to build a privacy berm on the southern portion of Parcel 31 as part of the locomotive and railcar
maintenance facility project. This will allow for the soil to be direct hauled and placed on Parcel
31 without leaving the proposed Brownfields property. The treated soil will be placed in the
berm and subsequently covered with hardscape or two ft of clean fill material.

Option 2: Soil will be transported to a Subtitle D landfill (likely Charlotte Motor Speedway
Landfill in Concord, NC) for disposal. A non-hazardous waste generator profile will be
completed and submitted to the disposal facility. The soil will then be excavated, direct loaded,
and transported for disposal at the waste disposal facility. H&H will maintain copies of disposal
manifests and certified weight tickets for each truckload of stabilized material that is hauled off
for disposal.

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Upon completion of excavation activities, the excavation area will be filled with clean soil that is
removed from the northern portion of Parcel 32. Prior to filling the area, H&H will collect
confirmation samples including one sample from the base of the excavation and four samples
from the sidewalls of the excavation. The soil samples will be collected using the bucket of the
trackhoe or by hand auger and will be submitted to the laboratory for analysis of total and TCLP
RCRA Metals plus antimony by EPA Method 6010C.

3.6 Schedule
NC DOT plans to begin construction of the locomotive and railcar maintenance facility in July
2016. Thus, the hazardous lead impacted soil needs to be stabilized and removed from the site
before July 2016. H&H anticipates the scope of work included in this work plan can be
completed within a timeframe of approximately one month. A report will be prepared and
submitted to NC DEQ within 45 days of completion of the field effort.

H&H appreciates your prompt review of this work plan. Should you have any questions or need
additional information, please do not hesitate to contact us at [phone].

Sincerely,
Hart & Hickman, PC
David Graham Matt Bramblett, PE
Senior Project Geologist Principal and Project Manager

Attachments

cc: Ms. Harvi Cooper, NCDEQ
Mr. Cyrus Parker, NCDOT
Mr. Gordon Box, NCDOT
Table 1
Summary of Groundwater Analytical Results
NC DOT Property - Parcel 32
Charlotte, Mecklenburg County, North Carolina
H&H Job No. ROW-508
Sample ID 32-TW1 TW-2 Screening Criteria
Sample Date 9/5/2014 3/31/2016
NC DEQ 2L Standard
1
Units mg/L mg/L mg/L
PCBs (8082)
Total PCBs BRL NA --
VOCs (8260)BRL NA --
SVOCs (8270)BRL NA --
Metals (6010/7470) --
Manganese NA 0.64 0.050
Nickel NA 0.0142 0.100
Zinc NA 0.0227 1.0
Lead NA <0.005 0.015
Turbidity (NTU)NA 8.02 NA
Notes:
1. NC DEQ 15A NCAC 2L .0202 Groundwater Quality Standards - April 2013
EPA Method follows parameter in parenthesis
NA = Not analyzed; NTU = nephelometric turbidity unit
BRL=Below laboratory reporting limit; PCBs=polychlorinated byphenyls
VOCs=volatile organic compounds; SVOCs=semi-volatile organic compounds
Bold indicates above 2L Standard.
Only compounds detected in at least one sample plus lead are shown above.
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Table 2 (Page 1 of 1)
Hart & Hickman, PC
SITE
0 2000 4000
APPROXIMATE
SCALE IN FEET
N
U.S.G.S. QUADRANGLE MAP
QUADRANGLE
7.5 MINUTE SERIES (TOPOGRAPHIC)
CHARLOTTE EAST, NC 1991
TITLE
PROJECT
SITE LOCATION MAP
CHARLOTTE LOCOMOTIVE AND RAILCAR
MAINTENANCE FACILITY
CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA
DATE:
JOB NO:
REVISION NO:
FIGURE:
1-5-16 0
1ROW-508
2923 S. Tryon Street, Suite 100
Charlotte, NC 28203
704.586.0007(p)
704.586.0373(f)

Appendix A
Tables and Figures from Parcel 32 PSA Report dated December 1, 2014

Table 2 (Page 1 of 1)
Summary of Soil Analytical Results
RJS/STS, LLC Property - Parcel 32
Charlotte, Mecklenburg County, North Carolina
H&H Job No. ROW-501
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Table 2 (Page 1 of 1)
Hart & Hickman, PC
Sample ID 32-2 32-3 32-4 32-5 32-6 32-7 32-8 32-9 32-10 32-11 32-12 32-13 32-14 32-15 32-16 32-17 32-18A 32-19A 32-20
Sample Depth (ft) 2-4 6-8 0-2 0-2 0-2 12-14 0-2 0-2 0-2 0-2 0-2 4-6 0-2 0-2 6-8 0-1.5 0-2 2-4 6-8 12-14 0-1
Sample Date 9/3/2014 9/3/2014 9/4/2014 9/4/2014 9/4/2014 9/4/2014 9/4/2014 9/4/2014 9/5/2014 9/5/2014 9/5/2014 9/5/2014 9/5/2014 9/5/2014 9/8/2014 9/5/2014 9/5/2014 9/5/2014 9/8/2014 9/8/2014 10/30/2014
RCRA Metals (7470/6010)
TCLP (mg/L)
Arsenic <0.050 NA NA NA NA NA NA <0.050 NA NA NA NA NA NA NA <0.050 NA NA NA NA NA
Barium 3.8 NA NA NA NA NA NA 5.8 NA NA NA NA NA NA NA 0.61 NA NA NA NA NA
Cadmium 0.21NANANANANANA0.47NANANANANANANA0.036NANANANANA
Chromium <0.025 NA NA NA NA NA NA <0.025 NA NA NA NA NA NA NA <0.025 NA NA NA NA NA
Lead 3.9NANANANANANA5.3 NA NA NA NA NA NA NA 398 NA NA NA NA NA
Mercury <0.20 NA NA NA NA NA NA <0.20 NA NA NA NA NA NA NA <0.20 NA NA NA NA NA
Selenium <0.10 NA NA NA NA NA NA <0.10 NA NA NA NA NA NA NA <0.10 NA NA NA NA NA
Silver <0.025 NA NA NA NA NA NA <0.025 NA NA NA NA NA NA NA <0.025 NA NA NA NA NA
PCBs (8082) (mg/kg)
Aroclor 1016 <0.197 <0.042 <0.195 <0.183 <0.203 <0.0401 <1.79 <0.374 <0.210 <0.0453 <0.0437 <0.0410 <0.0421 <0.0395 <0.0422 <0.211 <0.177 <0.190 <0.0394 <0.188 <1.350
Aroclor 1221 <0.197 <0.042 <0.195 <0.183 <0.203 <0.0401 <1.79 <0.374 <0.210 <0.0453 <0.0437 <0.0410 <0.0421 <0.0395 <0.0422 <0.211 <0.177 <0.190 <0.0394 <0.188 <1.350
Aroclor 1232 <0.197 <0.042 <0.195 <0.183 <0.203 <0.0401 <1.79 <0.374 <0.210 <0.0453 <0.0437 <0.0410 <0.0421 <0.0395 <0.0422 <0.211 <0.177 <0.190 <0.0394 <0.188 <1.350
Aroclor 1242 <0.197 <0.042 <0.195 <0.183 <0.203 <0.0401 <1.79 <0.374 <0.210 <0.0453 <0.0437 <0.0410 <0.0421 <0.0395 <0.0422 <0.211 <0.177 <0.190 <0.0394 <0.188 <1.350
Aroclor 1248 <0.197 <0.042 <0.195 <0.183 <0.203 <0.0401 <1.79 <0.374 <0.210 <0.0453 <0.0437 <0.0410 <0.0421 0.485 <0.0422 <0.211 <0.177 <0.190 <0.0394 <0.188 <1.350
Aroclor 1254 <0.197 <0.042 <0.195 <0.183 <0.203 <0.0401 6.78 0.434 <0.210 <0.0453 <0.0437 <0.0410 <0.0421 0.334 <0.0422 <0.211 1.34 0.489 <0.0394 <0.188 6.33
Aroclor 1260 1.64 0.103 0.426 0.503 <0.203 <0.0401 <1.79 <0.374 <0.210 <0.0453 <0.0437 <0.0410 <0.0421 <0.0395 <0.0422 <0.211 <0.177 <0.190 <0.0394 <0.188 <1.350
Total PCBs 1.64 0.103 0.426 0.503 -- --6.78 0.434----------0.819----1.34 0.489 -- --6.33
VOCs (8260) (mg/kg)
Acetone 0.276 <0.110 0.957 0.397 <0.0905 <0.106 0.191 0.726 <0.108 <0.0965 <0.112 <0.110 <0.106 <0.102 <0.0848 <0.134 <0.0833 <0.0926 <0.0804 <0.0880 <0.164
Benzene <0.0077 <0.0055 0.0083 <0.0065 <0.0045 <0.0053 <0.0060 <0.0061 <0.0054 <0.0048 <0.0056 <0.0055 <0.0053 <0.0051 <0.0042 <0.0067 <0.0042 <0.0046 <0.0040 <0.0044 <0.0082
2-Butanone (MEK) <0.153 <0.110 <0.163 <0.131 <0.0905 <0.106 <0.120 0.142 <0.108 <0.0965 <0.112 <0.110 <0.106 <0.102 <0.0848 <0.134 <0.0833 <0.0926 <0.0804 <0.0880 <0.164
n-Butylbenzene <0.0077 <0.0055 <0.0081 0.0227 <0.0045 <0.0053 <0.0060 <0.0061 <0.0054 <0.0048 <0.0056 <0.0055 <0.0053 <0.0051 <0.0042 <0.0067 <0.0042 <0.0046 <0.0040 <0.0044 <0.0082
Ethylbenzene <0.0077 0.0600 <0.0081 <0.0065 <0.0045 <0.0053 <0.0060 0.0122 <0.0054 <0.0048 <0.0056 <0.0055 <0.0053 <0.0051 <0.0042 <0.0067 <0.0042 <0.0046 <0.0040 <0.0044 <0.0082
p-Isopropyltoluene <0.0077 <0.0055 0.0217 0.0168 <0.0045 <0.0053 <0.0060 0.0291 <0.0054 <0.0048 <0.0056 <0.0055 <0.0053 <0.0051 <0.0042 <0.0067 <0.0042 <0.0046 <0.0040 <0.0044 <0.0082
Methylene Chloride <0.0307 <0.0220 <0.0326 <0.0261 <0.0181 <0.0211 <0.0241 <0.0242 0.0227 <0.0193 <0.0225 <0.0220 <0.0212 <0.0204 <0.0170 <0.0267 <0.0167 <0.0185 <0.0161 <0.0176 <0.0329
Naphthalene 0.0077 <0.0055 0.0682 0.0554 <0.0045 <0.0053 <0.0060 2.28 <0.0054 <0.0048 <0.0056 <0.0055 <0.0053 <0.0051 <0.0042 <0.0067 <0.0042 <0.0046 <0.0040 <0.0044 <0.0082
Toluene <0.0077 <0.0055 <0.0081 0.0138 <0.0045 <0.0053 <0.0060 0.0105 <0.0054 <0.0048 <0.0056 <0.0055 <0.0053 <0.0051 <0.0042 <0.0067 <0.0042 <0.0046 <0.0040 <0.0044 <0.0082
1,2,4-Trimethylbenzene 0.0101 <0.0055 0.0236 1.83 <0.0045 <0.0053 <0.0060 0.0322 <0.0054 <0.0048 <0.0056 <0.0055 <0.0053 <0.0051 <0.0042 <0.0067 <0.0042 <0.0046 <0.0040 <0.0044 <0.0082
1,3,5-Trimethylbenzene <0.0077 <0.0055 0.0105 0.204 <0.0045 <0.0053 <0.0060 0.0071 <0.0054 <0.0048 <0.0056 <0.0055 <0.0053 <0.0051 <0.0042 <0.0067 <0.0042 <0.0046 <0.0040 <0.0044 <0.0082
Total Xylenes 0.0129 0.186 <0.0163 0.285 <0.0090 <0.0106 <0.0120 0.0413 <0.0108 <0.0096 <0.0112 <0.0110 <0.0106 <0.0102 <0.0085 <0.0134 <0.0083 <0.0093 <0.0080 <0.0088 <0.0164
SVOCs (8270)(mg/kg)
Benzo(a)anthracene <19.70 <0.402 6.42 <3.66 <4.06 <0.401 <3.58 <3.74 <0.42 <0.453 <0.437 <0.410 <0.421 <0.395 <0.422 <4.220 <0.353 <0.379 <0.394 <0.375 <6.760
Benzo(a)pyrene <19.70 <0.402 5.46 <3.66 <4.06 <0.401 <3.58 <3.74 <0.42 <0.453 <0.437 <0.410 <0.421 <0.395 <0.422 <4.220 <0.353 <0.379 <0.394 <0.375 <6.760
Benzo(b)fluoranthene <19.70 <0.402 4.34 <3.66 <4.06 <0.401 <3.58 <3.74 <0.42 <0.453 <0.437 <0.410 <0.421 <0.395 <0.422 <4.220 <0.353 <0.379 <0.394 <0.375 <6.760
Benzo(k)fluoranthene <19.70 <0.402 5.36 <3.66 <4.06 <0.401 <3.58 <3.74 <0.42 <0.453 <0.437 <0.410 <0.421 <0.395 <0.422 <4.220 <0.353 <0.379 <0.394 <0.375 <6.760
Chrysene <19.70 <0.402 6.97 <3.66 <4.06 <0.401 <3.58 <3.74 <0.42 <0.453 <0.437 <0.410 <0.421 <0.395 <0.422 <4.220 <0.353 <0.379 <0.394 <0.375 <6.760
bis(2-ethylhexyl)phthalate <19.70 <0.402 <3.90 <3.66 <4.06 <0.401 <3.58 <3.74 <0.42 0.764 <0.437 <0.410 <0.421 <0.395 <0.422 <4.220 <0.353 <0.379 <0.394 <0.375 <6.760
Fluoranthene <19.70 <0.402 13.80 <3.66 <4.06 <0.401 <3.58 <3.74 <0.42 <0.453 <0.437 <0.410 <0.421 <0.395 <0.422 <4.220 <0.353 <0.379 <0.394 <0.375 <6.760
Phenanthrene <19.70 <0.402 12.90 <3.66 <4.06 <0.401 <3.58 <3.74 <0.42 <0.453 <0.437 <0.410 <0.421 <0.395 <0.422 <4.220 <0.353 <0.379 <0.394 <0.375 <6.760
Pyrene <19.70 <0.402 12.40 <3.66 <4.06 <0.401 <3.58 <3.74 <0.42 <0.453 <0.437 <0.410 <0.421 <0.395 <0.422 <4.220 <0.353 <0.379 <0.394 <0.375 <6.760
HSL Metals (6010/7471) (mg/kg)
Range
(mg/kg)
Mean
(mg/kg)
Antimony 11.9 <0.42 20.1 8.7 2.0 <0.55 60.9 20.2 6.9 <0.54 <0.60 <0.49 <0.64 <0.54 <0.52 238 8.4 <0.42 <0.43 <0.41 10.5 <1.0-8.8 0.76
Arsenic 13.4 1.2 12.8 8.9 1.4 1.2 9.6 15 1.9 <1.1 <1.2 <0.99 <1.3 2.3 <1.0 10.2 3.5 1.3 <0.87 <0.82 18.4 1.0-18 4.8
Beryllium 0.40 0.61 0.44 0.37 0.32 0.45 0.21 0.40 0.35 0.82 0.58 0.39 0.48 0.59 1.2 0.76 0.38 0.32 0.95 0.45 0.60 n.d.-2.0 0.11
Cadmium 35.9 1.7 42.5 421 <0.087 0.22 8.1 29.8 0.94 1.2 0.81 0.17 0.29 1.6 0.78 2.7 2.7 1.5 0.78 0.49 30.0 1.0-10 4.3
Chromium 100 9.1 68.4 56.1 19.8 6.7 45.1 97.6 11.9 53.8 138 8.6 12.2 77.7 11.2 71.0 83.2 17.8 21.7 4.7 114 7.0-300 65
Copper 550 42.3 1,310 543 39.7 22.0 253 2,420 320 75.4 70.1 32.9 84.3 116 39.8 2,520 306 109 35.3 35 1,100 3.0-100 34
Lead 2,580 85.3 2,200 1,290 237 9.1 3,780 2,290 2,260 14.8 125 4.9 143 223 45.5 28,700 402 253 5.0 68.8 3,100 ND - 50 16
Manganese 713 430 704 440 236 397 943 932 194 588 407 136 126 783 191 1,530 391 324 424 242 1,040 8.0-3,394 594
Mercury 0.17 0.067 0.24 0.29 0.044 <0.0041 0.32 0.37 0.27 0.083 0.052 0.0099 0.036 0.17 0.025 1.3 0.24 0.14 0.042 0.0051 0.72 0.03-0.52 0.121
Nickel 110 7.8 58.1 99.3 11.6 3.9 44.6 112 9.3 21.7 18.0 2.7 7.2 37.9 6 38.9 48.5 11.3 11.4 7.1 75.9 n.d.-150 23
Selenium 3.7 1.1 2.4 3.4 4.0 <1.1 1.4 2.8 <1.2 <1.1 <1.2 <0.99 <1.3 <1.1 <1.0 <1.2 <0.99 <0.85 <0.87 <0.82 <1.5 <0.1-0.8 0.42
Silver 0.65 <0.42 1.7 4.0 <0.43 <0.55 <0.44 1.6 <0.59 <0.54 <0.60 <0.49 <0.64 <0.54 <0.52 2.1 <0.50 <0.42 <0.43 <0.41 1.7 ND-5.0 --
Zinc 6,340 471 12,100 1,950 77.7 53.3 1,480 6,510 253 66.2 224 16.5 95.0 362 48.6 995 1,150 1,010 75.8 67.6 7,590 25-124 56
TPH-DRO/GRO (8015) (mg/kg)
Diesel-Range Organics (DRO)4,330 71.7 1,180 1,180 66.9 <6.1 466 1,760 66.0 421 9.3 <6.2 <6.4 69.4 <6.4 385 63.8 148 <6.0 <5.7 1,040
Gasoline-Range Organics (GRO) <5.6 <6.9 15.1 58.7 <7.8 <6.9 <4.9 11.5 <8.0 <7.8 <6.4 <7.7 <6.6 <7.7 <5.7 <19.0 <5.0 <8.5 <4.5 <5.2 <11.3
Notes:
Bold concentration indicates exceedance of IHSB Industrial PSRG (and twice mean background levels in the case of metals), RCRA Toxicity Characteristic, or NC DENR Action Levels
1. NC DENR Inactive Hazardous Sites Branch (IHSB) Preliminary Industrial Health Based Soil Remediation Goals - September 2014
2. NC DENR IHSB Protection of Groundwater Preliminary Soil Remediation Goals -September 2014
3. Range and Mean background values for North Caolina or Southeast soils taken from Elements in North American Soils by Dragun and Chekiri, 2005
EPA Method follows parameter in parenthesis; NA= Not analyzed; NE = Not established; -- = Not Applicable
BRL=Below laboratory reporting limit; VOCs=volatile organic compounds; TCLP = Toxicity Characteristic Leeching Procedure
SVOCs=semi-volatile organic compounds; TPH=total petroleum hydrocarbons; PCBs = polychlorinated biphenyls; HSL = Hazardous Substance List
63
1.0
65
270
700
360,000
3
3.0
70,000
1,200
1,200
5.8
0.90
1,200
3.4
2.1
130
3.1
5,200
800
9,400
100,000
200
32-1
Screening Criteria
RCRA Toxicity Characteristic
Level (mg/L)
5.0
100.0
1.0
5.0
5.0
0.2
1.0
5.0
IHSB Industrial
PSRG1
(mg/kg)
IHSB POG2
(mg/kg)
-- --
-- --
-- --
-- --
-- --
-- --
-- --
10.14
100,000 24
5.1 0.0073
28,000 16
110 2.4
25 8.1
NE 0.68
640 0.023
17 0.21
820 5.5
48 6.7
180 6.7
260 5.8
2.9 0.18
0.29 0.059
2.9 0.60
2.9 5.9
290 18
160 7.2
6,000 330
NE 6.8
Background Metals
in Soil3
9.4
460
10
10
NC DENR Action Level
(mg/kg)
4,400
4,600 220

Appendix B
Laboratory Analytical Report

#=CL#
April 06, 2016
LIMS USE: FR - CHEMICAL
LIMS OBJECT ID: 92292241
92292241
Project:
Pace Project No.:
RE:
Chemical Testing Engineer
NCDOT
Materials & Tests Unit
1801 Blue Ridge Road
Raleigh, NC 27607
ROW 509 WBS#49999.1.STR8
Dear Chemical Engineer:
Enclosed are the analytical results for sample(s) received by the laboratory on April 01, 2016. The
results relate only to the samples included in this report. Results reported herein conform to the
most current TNI standards and the laboratory's Quality Assurance Manual, where applicable, unless
otherwise noted in the body of the report.
Analyses were performed at the Pace Analytical Services location indicated on the sample analyte
page for analysis unless otherwise footnoted.
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
Kevin Godwin
[e-mail]
Project Manager
Enclosures
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, Inc..
Pace Analytical Services, Inc.
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 1 of 11
#=CP#
CERTIFICATIONS
Pace Project No.:
Project:
92292241
ROW 509 WBS#49999.1.STR8
Asheville Certification IDs2225 Riverside Drive, Asheville, NC 28804Florida/NELAP Certification #: E87648
Massachusetts Certification #: M-NC030North Carolina Drinking Water Certification #: 37712
North Carolina Wastewater Certification #: 40South Carolina Certification #: 99030001
Virginia/VELAP Certification #: 460222
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, Inc..
Pace Analytical Services, Inc.
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 2 of 11
#=SA#
SAMPLE ANALYTE COUNT
Pace Project No.:
Project:
92292241
ROW 509 WBS#49999.1.STR8
Lab ID Sample ID Method
Analytes
Reported LaboratoryAnalysts
92292241001 TW-2 EPA 6010 13 PASI-ACDF
EPA 7470 1 PASI-AHVK
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, Inc..
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[phone]
Page 3 of 11
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92292241
ROW 509 WBS#49999.1.STR8
Sample:TW-2 Lab ID:92292241001 Collected:03/31/16 15:05 Received:04/01/16 13:05 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: EPA 6010 Preparation Method: EPA 3010A6010 MET ICP
Antimony ND ug/L 04/05/16 17:01 7440-36-004/04/16 19:305.0 1
Arsenic ND ug/L 04/05/16 13:44 7440-38-204/04/16 19:3010.0 1
Beryllium ND ug/L 04/05/16 13:44 7440-41-704/04/16 19:301.0 1
Cadmium ND ug/L 04/05/16 13:44 7440-43-904/04/16 19:301.0 1
Chromium ND ug/L 04/05/16 13:44 7440-47-304/04/16 19:305.0 1
Copper ND ug/L 04/05/16 13:44 7440-50-804/04/16 19:305.0 1
Lead ND ug/L 04/05/16 13:44 7439-92-104/04/16 19:305.0 1
Manganese 640 ug/L 04/05/16 13:44 7439-96-504/04/16 19:305.0 1
Nickel 14.2 ug/L 04/05/16 13:44 7440-02-004/04/16 19:305.0 1
Selenium ND ug/L 04/05/16 13:44 7782-49-204/04/16 19:3010.0 1
Silver ND ug/L 04/05/16 13:44 7440-22-404/04/16 19:305.0 1
Thallium ND ug/L 04/05/16 13:44 7440-28-004/04/16 19:3010.0 1
Zinc 22.7 ug/L 04/05/16 13:44 7440-66-604/04/16 19:3010.0 1
Analytical Method: EPA 7470 Preparation Method: EPA 74707470 Mercury
Mercury ND ug/L 04/05/16 13:06 7439-97-604/04/16 17:050.20 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, Inc..Date: 04/06/2016 04:55 PM
Pace Analytical Services, Inc.
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 4 of 11
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92292241
ROW 509 WBS#49999.1.STR8
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
QC Batch:
QC Batch Method:
Analysis Method:
Analysis Description:
MERP/9195
EPA 7470
EPA 7470
7470 Mercury
Associated Lab Samples:92292241001
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK:1701421
Associated Lab Samples:92292241001
Matrix:Water
Analyzed
Mercury ug/L ND 0.20 04/05/16 13:01
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
1701422LABORATORY CONTROL SAMPLE:
LCSSpike
Mercury ug/L 2.52.5 101 80-120
Parameter Units
MS
Result
% Rec
Limits Qual% RecConc.
1701423MATRIX SPIKE & MATRIX SPIKE DUPLICATE:
MSSpike
Result
92292241001
1701424
MSD
Result
MSD
% Rec RPD
MSDMS
Spike
Conc.
Mercury ug/L 2.5 104 75-12599 52.5ND 2.6 2.5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, Inc..Date: 04/06/2016 04:55 PM
Pace Analytical Services, Inc.
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 5 of 11
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92292241
ROW 509 WBS#49999.1.STR8
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
QC Batch:
QC Batch Method:
Analysis Method:
Analysis Description:
MPRP/21237
EPA 3010A
EPA 6010
6010 MET
Associated Lab Samples:92292241001
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK:1701357
Associated Lab Samples:92292241001
Matrix:Water
Analyzed
Antimony ug/L ND 5.0 04/05/16 16:55
Arsenic ug/L ND 10.0 04/05/16 13:38
Beryllium ug/L ND 1.0 04/05/16 13:38
Cadmium ug/L ND 1.0 04/05/16 13:38
Chromium ug/L ND 5.0 04/05/16 13:38
Copper ug/L ND 5.0 04/05/16 13:38
Lead ug/L ND 5.0 04/05/16 13:38
Manganese ug/L ND 5.0 04/05/16 13:38
Nickel ug/L ND 5.0 04/05/16 13:38
Selenium ug/L ND 10.0 04/05/16 13:38
Silver ug/L ND 5.0 04/05/16 13:38
Thallium ug/L ND 10.0 04/05/16 13:38
Zinc ug/L ND 10.0 04/05/16 13:38
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
1701358LABORATORY CONTROL SAMPLE:
LCSSpike
Antimony ug/L 488500 98 80-120
Arsenic ug/L 510500 102 80-120
Beryllium ug/L 515500 103 80-120
Cadmium ug/L 516500 103 80-120
Chromium ug/L 514500 103 80-120
Copper ug/L 508500 102 80-120
Lead ug/L 518500 104 80-120
Manganese ug/L 524500 105 80-120
Nickel ug/L 524500 105 80-120
Selenium ug/L 522500 104 80-120
Silver ug/L 238250 95 80-120
Thallium ug/L 508500 102 80-120
Zinc ug/L 520500 104 80-120
Parameter Units
MS
Result
% Rec
Limits Qual% RecConc.
1701359MATRIX SPIKE & MATRIX SPIKE DUPLICATE:
MSSpike
Result
92292241001
1701360
MSD
Result
MSD
% Rec RPD
MSDMS
Spike
Conc.
Antimony ug/L 500 97 75-12597 0500ND486488
Arsenic ug/L 500 95 75-12594 1500ND475471
Beryllium ug/L 500 94 75-12593 1500ND472467
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, Inc..Date: 04/06/2016 04:55 PM
Pace Analytical Services, Inc.
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 6 of 11
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92292241
ROW 509 WBS#49999.1.STR8
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
MS
Result
% Rec
Limits Qual% RecConc.
1701359MATRIX SPIKE & MATRIX SPIKE DUPLICATE:
MSSpike
Result
92292241001
1701360
MSD
Result
MSD
% Rec RPD
MSDMS
Spike
Conc.
Cadmium ug/L 500 94 75-12593 1500ND470467
Chromium ug/L 500 93 75-12592 1500ND466461
Copper ug/L 500 93 75-12593 0500ND466466
Lead ug/L 500 91 75-12591 1500ND457455
Manganese ug/L 500 91 75-12588 250064011001080
Nickel ug/L 500 92 75-12592 150014.2 476 474
Selenium ug/L 500 96 75-12596 0500ND478479
Silver ug/L 250 87 75-12586 1250ND218216
Thallium ug/L 500 90 75-12590 0500ND448448
Zinc ug/L 500 93 75-12592 150022.7 485 481
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, Inc..Date: 04/06/2016 04:55 PM
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[phone]
Page 7 of 11
#=QL#
QUALIFIERS
Pace Project No.:
Project:
92292241
ROW 509 WBS#49999.1.STR8
DEFINITIONS
DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot.
ND - Not Detected at or above adjusted reporting limit.
J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
MDL - Adjusted Method Detection Limit.
PQL - Practical Quantitation Limit.
RL - Reporting Limit.
S - Surrogate
1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is
a combined concentration.
Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values.
LCS(D) - Laboratory Control Sample (Duplicate)
MS(D) - Matrix Spike (Duplicate)
DUP - Sample Duplicate
RPD - Relative Percent Difference
NC - Not Calculable.
SG - Silica Gel - Clean-Up
U - Indicates the compound was analyzed for, but not detected.
Acid preservation may not be appropriate for 2 Chloroethylvinyl ether, Styrene, and Vinyl chloride.
A separate vial preserved to a pH of 4-5 is recommended in SW846 Chapter 4 for the analysis of Acrolein and Acrylonitrile by EPA
Method 8260.
N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for
each analyte is a combined concentration.
Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes.
TNI - The NELAC Institute.
LABORATORIES
Pace Analytical Services - AshevillePASI-A
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, Inc..Date: 04/06/2016 04:55 PM
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[phone]
Page 8 of 11
#=CR#
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Pace Project No.:
Project:
92292241
ROW 509 WBS#49999.1.STR8
Lab ID Sample ID QC Batch Method QC Batch Analytical Method
Analytical
Batch
92292241001 MPRP/21237 ICP/19081TW-2 EPA 3010A EPA 6010
92292241001 MERP/9195 MERC/8833TW-2 EPA 7470 EPA 7470
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, Inc..Date: 04/06/2016 04:55 PM
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[phone]
Page 9 of 11
Page 10 of 11
Page 11 of 11