MO-9286_40750_CA_MRP_20230207_Monitoring Report

ERM 4140 Parklake Ave, Suite 110
Raleigh, NC
27612
Telephone: [phone]

www.erm.com

Page 1 of 5
February 7, 2023
Mr. Brad C. Newton, PG, Hydrogeologist II
Mooresville Regional Office
Underground Storage Tank Section
Division of Waste Management
North Carolina Department of Environmental Quality
610 East Center Avenue, Suite 301
Mooresville, NC 28115

Subject: December 2022 Groundwater Monitoring Report
Marshall Steam Station
8320 NC Highway 150
Sherrills Ford, Catawba County, North Carolina
Incident Number: 40750
Ranking: I140D

Dear Mr. Newton:
Environmental Resources Management, NC Inc. (ERM), on behalf of Duke Energy Carolinas LLC
(Duke Energy), has prepared this December 2022 Groundwater Monitoring Report (Report) to
summarize recent groundwater monitoring activities related to petroleum underground storage tank
(UST) Incident Number 40750 at the Marshall Steam Station in Sherrills Ford, Catawba County,
North Carolina (Figure 1).
Background
In February 2017, Anchor QEA of North Carolina, PLLC (Anchor QEA), on behalf of Duke Energy,
oversaw the removal of a 500-gallon gasoline UST and approximately 60 tons of petroleum-affected
soil on the eastern side of the Marshall Steam Station (the Site). In January 2018, Anchor QEA
completed a Comprehensive Site Assessment (CSA) at the Site that identified impacts to soil and
groundwater attributed to the former UST.
In response, North Carolina Department of Environmental Quality (NCDEQ), Division of Waste
Management (DWM) UST Section issued a Notice of Regulatory Requirements (NORR) letter dated
December 6, 2018. In the 2018 NORR letter, NCDEQ requested that Duke Energy implement
monitored natural attenuation (MNA) as a remedial strategy and conduct annual groundwater
sampling from groundwater monitoring wells MW-1 and MW-2 in October of each year. There are
currently eight groundwater monitoring wells (MW-1, MW-1D, MW-2, MW-3, MW-4, MW-5, MW-6,
and MW-7) located on-Site associated with Incident Number 40750 (Table 1).
Based on increasing concentrations of constituents in groundwater, NCDEQ UST Section issued
another NORR on November 23, 2020 that requested Duke Energy perform active remediation to
lower concentrations of constituents in groundwater. In April 2021, ERM completed a high-level
feasibility study to evaluate remedial alternatives, which concluded that air sparge and soil vapor
extraction (AS/SVE) was the most appropriate remedial technology based on site conditions and
target constituents. ERM conducted a pilot test to further evaluate potential efficacy of AS/SVE
technology between September and October 2021. Based on field observations and the results of
exhaust and groundwater performance monitoring, implementation of a full scale AS/SVE
ERM

Page 2 of 5
February 7, 2023

remediation system was recommended. Additional details are provided in the Air Sparge and Soil
Vapor Extraction Pilot Test Summary, dated December 30, 2021.
An Acknowledgment of Receipt (in response to the Pilot Test Summary) was issued by NCDEQ on
January 21, 2022. This letter requested quarterly monitoring for a year after implementation of the
AS/SVE system, and semi-annually monitoring thereafter. Since construction of the AS/SVE
treatment system is ongoing, a groundwater sampling event was completed in December 2022 and
a summary of the field activities and results are presented below. An update on the AS/SVE
construction process is also included, following discussion of December 2022 data.
Summary of Field Activities
On December 6, 2022, ERM gauged the static water levels in the eight on-Site groundwater
monitoring wells (Figure 2). Following measurement of water levels, ERM collected groundwater
samples from monitoring wells MW-1, MW-2, and MW-3 using low-flow groundwater sampling
techniques. Water quality field parameters, including pH, specific conductivity, dissolved oxygen
(DO), oxidation-reduction potential (ORP), turbidity, and temperature were monitored and recorded
at approximate five-minute intervals during groundwater purging (Table 2). Groundwater sampling
field forms are provided as Attachment A. Once parameters stabilized, ERM collected the
respective groundwater samples in laboratory-provided containers, placed the samples on ice in a
cooler, and delivered them to Pace Analytical Services, LLC, a North Carolina-certified laboratory, for
analysis of volatile organic compounds (VOCs) via Standard Method (SM) 6200B.
Results Summary
ERM did not observe visual evidence of light non-aqueous phase liquids, or sheen, in Site
groundwater monitoring wells or on purged groundwater. ERM calculated groundwater elevations
from historical survey data and measured depths to groundwater. Approximate groundwater
elevation contours and flow direction are presented on Figure 2, along with the average surface
water elevation data for Lake Norman on December 6, 20221. Generally, groundwater flow at the
Site is to the east, which is consistent with historical findings.
The groundwater elevation at MW-1D was excluded from potentiometric contours based on the
difference in its elevation compared to an adjacent well, MW-1. Differences in groundwater elevation
between this well pair has been observed during past sampling events and may be attributable to the
difference in lithology that their screens intersect. Differences in elevation between this well pair will
be tracked for trends during future monitoring events.
Based on previously reported Site data, the average hydraulic conductivity (k), as measured at
MW-1 and MW-2, is approximately 0.05 feet per day. Using a hydraulic gradient (i) of 0.0096 feet per
foot (between MW-7 and MW-2 on December 6, 2022), k, and an assumed effective porosity (ne) of
10 percent, the groundwater seepage velocity (v) is 0.0048 feet per day using the following formula:

1 Lake Norman water level data are available on Duke Energy’s Lake & Recreation online data access portal, available at:
https://www.duke-energy.com/community/lakes/.
ERM

Page 3 of 5
February 7, 2023

𝑣=𝑘𝑖
𝑛௘

where:
𝑣 = groundwater seepage velocity 𝑖 = hydraulic gradient
𝑘 = hydraulic conductivity 𝑛௘ = assumed effective porosity
A summary of groundwater sample analytical results is presented in Table 3 and the complete
laboratory analytical report is in Attachment B. A map illustrating groundwater analytical data
exceeding NC groundwater quality standards is presented as Figure 3. A summary of historical
groundwater analytical data, and field parameters, is in Attachment C.
ERM compared groundwater analytical results to the following criteria:
■ Groundwater quality standards listed in Title 15A North Carolina Administrative Code (NCAC),
Subchapter 2L .0202 (2L Standards), including interim maximum allowable concentrations
(IMACs) as appropriate;

■ Intermediate risk criteria, defined in Title 15A NCAC, Subchapter 2L .0406(2) as follows:

 Surface water quality standards (SWQS) listed in Title 15A NCAC, Subchapter 2B .0200 (2B
standards), and the United States Environmental Protection Agency (USEPA) National Criteria
multiplied by a factor of 10 (10xSWQS), since surface water is located within 500 feet of the
source area; and

 NCDEQ UST Section Gross Contamination Levels (GCLs).
A summary of the most recent petroleum hydrocarbon constituent concentrations associated with the
groundwater samples collected and analyzed from the Site groundwater monitoring wells relative to
the applicable criteria are as follows:
■ 2L Standards – Eight petroleum-related constituents were detected at concentrations above their
respective 2L Standards in the parent and field duplicate samples collected from MW-1. One
constituent (benzene) was detected above its 2L Standards in the sample collected from MW-3.
The sample collected from MW-2 did not contain any constituents at concentrations above their
respective 2L Standards.
■ 10xSWQS – Four constituents were detected above their respective 10xSWQS in the parent and
field duplicate samples collected from MW-1. The samples collected from MW-02 and MW-03 did
not contain any constituents at concentrations above their respective 10xSWQS Standards.
■ GCLs – Benzene is the only constituent detected in groundwater at concentrations above its
GCL. Benzene was only detected above the respective GCL in the groundwater samples (parent
and field duplicate) collected from MW-1.
Upcoming Groundwater Sampling Schedule
ERM will continue semi-annual groundwater monitoring at the site until completion of the AS/SVE
system, after which quarterly groundwater sampling events will begin after system startup. The initial
sampling event following startup of the full-scale AS/SVE will include samples collected from all eight
on-Site monitoring wells. Installation of the system is expected to be completed during the fall of
ERM

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February 7, 2023

2023, pending equipment and contractor availability. The next semi-annual groundwater sampling
event is scheduled for June 2023.
AS/SVE Progress Update
ERM conducted an AS/SVE pilot test between September and October 2021. Additional details are
provided in the Air Sparge and Soil Vapor Extraction Pilot Test Summary, dated December 30, 2021.
Based on data generated by the pilot test, ERM designed a full-scale AS/SVE treatment system
consisting of 3 SVE wells and 3 AS wells proximate to the former UST location. The AS/SVE
treatment system layout and design was detailed in the April 2022 Groundwater Monitoring Report,
dated May 3, 2022.
AS and SVE wells were installed on August 22-25, 2022 in accordance with the proposed design via
hollow-stem auger drilling. Each SVE and AS well was installed to depths of 20 and 40 ft bgs,
respectively. Transfer piping will be installed above ground to connect AS/SVE wells to a stand-alone
building which will house components of the AS/SVE system. The building and AS/SVE system
components will be pre-constructed, to the extent possible, prior to installation at the Site. ERM has
contracted Enviro-Equipment Inc. to construct the AS/SVE system building and components.
Installation of the system is expected to be completed in the fall of 2023 based upon current lead
times provided by Enviro-Equipment Inc.
Please feel free to contact Jacqueline Roddy at [e-mail] with any questions you
may have regarding this report.
Sincerely,

Jacqueline Roddy, P.E. Blair D. Burgess, Jr
Project Manager Partner

Copies:

Chris Gilbert, Duke Energy
Project File

Attachments:

Table 1 – Groundwater Well Construction Data
Table 2 – Water Elevation Data and Field Parameter Data (December 6, 2022)
Table 3 – Groundwater Analytical Results (December 6, 2022)

Figure 1 – Site Location Map
Figure 2 – Groundwater Elevation Map – December 2022
Figure 3 – Groundwater Analytical Exceedances Map – December 2022

ERM

Page 5 of 5
February 7, 2023

Attachment A – Groundwater Sampling Forms
Attachment B – Laboratory Analytical Report
Attachment C – Historical Groundwater Field and Analytical Results

TABLES

Table 1 Groundwater Well Construction Data
Marshall Steam Station
Sherrills Ford, NC
Groundwater
Monitoring Well &
Surface Water
Location
Water Bearing
Unit
Monitored
Top of Casing
Elevation or
Datum
Elevation
(ft NAVD 88)
Ground
Surface
Elevation (feet
NAVD 88)
Construction
Date
Casing/Scree
n Diameter
(inches)
Screened
Interval
(ft bgs)
Screen
Length (ft)
Total Well
Depth
(ft bgs)
MW-01 Residuum 771.35 771.63 6/1/2017 2.0 5 - 20 15 20
MW-01D Saprolite 771.27 771.57 3/29/2018 2.0 35 - 40 5 40
MW-02 Saprolite 767.18 767.52 12/12/2017 2.0 7 - 22 15 22
MW-03 Residuum 771.74 771.94 3/28/2018 2.0 10 - 20 10 20
MW-04 Fill/Residuum 765.85 766.12 3/28/2018 2.0 8 - 18 10 18
MW-05 Residuum 771.86 772.19 9/28/2018 2.0 13 - 23 10 23
MW-06 Residuum 770.48 770.89 9/28/2018 2.0 15 - 25 10 25
MW-07 Saprolite 771.18 770.89 9/28/2018 2.0 53 - 57.5 4.5 57.5
LAKE NORMAN Surface Water 756.5
Notes:
1) Groundwater monitoring well elevation survey used site survey marker CCM-2 (771.01 feet NAVD 88).
NAVD 88: North American Vertical Datum of 1988
ft = feet
bgs = below ground surface
2) Lake Norman surface water elevations reported as an average daily height by Duke Energy Lake Services relative to an arbitrary datum of 100 and is reported to be
equilivent to 760 feet NAVD 88.
Table 2. Water Elevation Data and Field Parameter Data (December 6, 2022)
Marshall Steam Station
Sherrills Ford, NC
Project Number 0581051 1 of 1 EQuIS Facility Code
DUKE-MSS
Well ID
TOC
Elevation
(feet amsl)
Depth to
Water
(feet btoc)
Groundwater
Elevation
(feet amsl)
Dissolved Oxygen
(mg/L)
Oxidation
Reduction
Potential (mV)
pH (SU)Temperature
(°C)
Turbidity
(NTU)
Specific
Conductivity
(uS/cm)
MW-01 771.35 13.70 757.65 0.17 -113.00 6.1 19.20 1.95 400.0
MW-01D 771.27 15.28 755.99 ------
MW-02 767.18 10.54 756.64 0.20 63.80 5.95 17.30 16.8 382.2
MW-03 771.74 15.17 756.57 0.10 248.20 5.1 18.30 3.16 165.3
MW-04 765.85 9.59 756.26 ------
MW-05 771.86 15.94 755.92 ------
MW-06 770.48 11.47 759.01 ------MW-07 771.18 15.02 756.16 ------
Notes:
amsl feet above mean sea level relative to NAVD 88btoc Feet below top of casing
mg/L micrograms per liter
mV millivolts
SU standard units
uS/cm microsiemens per centimeter
°C degrees Celsius
NTU nephelometric turbidity unitNAVD 88 North American Vertical Datum of 1988
-- Groundwater samples and associated field parameters were not collected from MW-01D and MW-04 through MW-07.
Table 3. Groundwater Analytical Results (December 6, 2022)
Marshall Steam Station
Sherrills Ford, NC
Project Number 0581051 1 of 1 EQuIS Facility Code
DUKE-MSS
MW-02 MW-03
2022/12/06 2022/12/06 (FD)2022/12/06 2022/12/06
Parameters
2L
Standard 10xSWQS GCL
Amyl Alcohol, tert-NE NE 40,000 22,300 22,100 < 100 < 100
Benzene 1 11.9 5,000 8,280 8,590 < 0.50 2.1
1,2-Dichloroethane 0.4 99 400 42.4 44.5 < 0.50 < 0.50
Ethylbenzene 600 680 80,000 452 473 < 0.50 < 0.50
Isopropyl ether 70 200,000 70,000 2,390 2,460 15.6 55.8
Isopropylbenzene (Cumene)70 2,500 30,500 29.7 31.0 < 0.50 < 0.50
Methyl tert-butyl ether 20 190 20,000 945 971 12.5 5.0
Naphthalene 6 120 6,000 165 159 < 2.0 < 2.0
n-Propylbenzene 70 800 26,100 32.0 33.7 < 0.50 < 0.50
Toluene 600 110 260,000 2,540 2,590 < 0.50 < 0.50
1,2,4-Trimethylbenzene 400 3,900 28,500 200 207 < 0.50 < 0.50
1,3,5-Trimethylbenzene 400 6,300 24,100 44.2 46.9 < 0.50 < 0.50
o-Xylene 500 6,000 50,000 491 508 < 0.50 < 0.50
m,p-Xylenes 500 NE 50,000 923 949 < 1.0 < 1.0
Notes:
ug/L - microgram(s) per liter
NC 2L - 15A NCAC 02L .0202 Groundwater Standard
10xSWQS - 10 times the lower value of the North Carolina Protective Values for Surface Waters, and Title 15A of the North Carolina Administrative Code,
subchapter 02B, Class C, surface water standards for: 1) Water Supply, 2) Aquatic Life & Secondary Recreation, or 3) Fish Consumption
GCL - Gross Contamination Level, from the North Carolina Department of Environmental Quality, Underground
Storage Tank Section, Gross Contamination Levels for Groundwater Cleanup Guidance
NE - not established
FD - field duplicate sample
< - The constituent concentration was not detected above the laboratory reporting limit specified.
Bold value indicates the analyte is detected above laboratory reporting limit specified.Blue value indicates that the detected concentration is above NC 2Ls
Gray shading indicates the constituent was detected at a concentration greater than 10 times the SWQS.
Italicized value indicates the constituent was detected at a concentration greater than GCLs.
Sample Identification
Date Collected
MW-01
Volatile Organic Compounds, ug/L

FIGURES

^_
0 2,000
Feet
1:24,000
Legend
^_Site Location
Overall Site Parcel Boundary
\\usbdcfs02\data\Boston\Team\DMMV\Clients_A_E\Duke\Marshall_Steam_Station_NC\MXD\202107_GWMRpt\Fig1_SiteLocMap.mxd, REVISED: 09/01/2021, SCALE: 1:24,000 when printed at 8.5x11DRAWN BY: Amanda.Freeman0 2,000
Feet
¯
1 inch = 2,000 feet
Source: Copyright:© 2013 National Geographic Society, i-cubed
ERM Environmental Resources Managementwww.erm.com
Figure 1Site Location MapMarshall Steam Station
Sherrills FordCatawba County, North Carolina
¯
Coordinate System: GCS WGS 1984
^_
SITE
&%
!
&<&<
&<
&<&<&<&<&<
*DP-1
LAKE NORMAN756.5
MW-01757.65
MW-01D755.99 MW-02756.64
MW-03756.57
MW-04756.26
MW-05755.92
MW-06759.01
MW-07756.16
7597587571:240
Approximate Extent of Soil Abatement Area
Approximate Location of the Former UST
!Surface Water Elevation
&<Observation Well
&<Saprolite Monitoring Well
&<Residuum Monitoring Well
&%Approximate Drive Point Location
Groundwater Elevation Contour
(Dashed where inferred)
Approximate Groundwater Flow Direction
\\SCUSPRDGISFS01\Data\US\Projects\D-F\Duke\Marshall_Steam_Station_NC\MXD\202212_GWMRpt\Fig2_GWElev.mxd, REVISED: 02/02/2023, SCALE: 1:240 when printed at 11x17ERMEnvironmental Resources Managementwww.erm.com
Figure 2Groundwater Elevation Map - December 2022Marshall Steam StationSherrils FordCatawba County, North CarolinaNotes:Groundwater measurements collected on 6 December 2022.* indicates measurements are not included in contouring.Measurements shown in feet above mean sea level.
0 10 20
Feet
1 inch = 20 feet
¯DRAWN BY: Linlin.MuSource: NCOneMap OrthoimagerySources: Esri, HERE, Garmin, Intermap, increment P Corp., GEBCO, USGS, FAO, NPS, NRCAN, GeoBase, IGN, Kadaster NL, Ordnance Survey, Esri Japan, METI, Esri China (Hong Kong), (c) OpenStreetMap contributors, and the GIS User Community Coordinate System: NAD 1983 StatePlane North Carolina FIPS 3200 Feet
&%&<&<
&<
&<&<&<&<
MW-1D
MW-5
MW-6
MW-7
1:200
Approximate Extent of Soil Abatement Area
Approximate Location of the Former UST
&<Saprolite Monitoring Well
&<Residuum Monitoring Well
&%Approximate Drive Point Location
M:\US\Projects\D-F\Duke\Marshall_Steam_Station_NC\MXD\202212_GWMRpt\Fig3_GWResults.mxd, REVISED: 02/02/2023, SCALE: 1:200 when printed at 11x17ERMEnvironmental Resources Managementwww.erm.com
Figure 3Groundwater Analytical Exceedances Map - December 2022Marshall Steam StationSherrils FordCatawba County, North Carolina
Notes:Groundwater samples collected on 6 December 2022.Only concentrations that exceed NC groundwater quality standards are shown.Analytical results are in micrograms per liter (ug/L)FD = field duplicate sampleN = parent sample
0 10 20
Feet
1 inch = 17 feet
¯DRAWN BY: Linlin.MuSource: NCOneMap OrthoimagerySources: Esri, HERE, Garmin, Intermap, increment P Corp., GEBCO, USGS, FAO, NPS, NRCAN, GeoBase, IGN, Kadaster NL, Ordnance Survey, Esri Japan, METI, Esri China (Hong Kong), (c) OpenStreetMap contributors, and the GIS User Community Coordinate System: NAD 1983 StatePlane North Carolina FIPS 3200 Feet
MW-01 N FDBenzene 8,280 8,590 1,2-Dichloroethane 42.4 44.5 Isopropyl ether 2,390 2,460 Methyl tert-butyl ether 945 971 Naphthalene 165 159 Toluene 2,540 2,590 o-Xylene 491 508 m,p-Xylenes 923 949
MW-02Analytes were not detected above groundwater quality standards
NC 2L GW Standards
10 x SW Quality Standards
Gross Contamination LevelsBenzene (ug/L)1 11.9 5,0001,2-Dichloroethane (ug/L)0.4 99 400Isopropyl ether (ug/L)70 200,000 70,000Methyl tert-butyl ether (ug/L)20 190 20,000Naphthalene (ug/L)6 120 6,000Toluene (ug/L)600 110 260,000o-Xylene (ug/L)500 6000 50,000m,p-Xylenes (ug/L)500 NE 50,000
MW-03 NBenzene2.1
DP-1

ATTACHMENT A GROUNDWATER SAMPLING FORMS

Site Name:
Sample Type:
WATER MATRIX SAMPLING
FIELD DATA FORM
Marshall UST Incident #40750
Circle one -~itor PT, Surface Water, Potable WSW; other)
Job#: Of,? -,S-'J r'
Sample ID: /-A 'v.J -o I -\./ 6, -'?.D .. -Z. I 1. 0 b J' ff) -o I -w a -"l,e-'l..:i.1, o 6
Date: 1-i1a6 /~ i.--z...
Sampling Personnel: Alex Ward
Weather Conditions: Sunny, Partly Cloudy, Cloud~rn; J;)ther
Time: I 1,: '-lo
Well Type: Flush Surface Completion, Stick Up Completion Well Tag Present: Yes, No
Well Locked: Yes, No Lock Present: Yes, No Well ID info. on Tag: Yes, No
Well Bolted: Yes, No Well Cap: Yes, No Well Cap Condition: Good, Replace, Other;
Well Pad Condition: Good, Cracked, Replace, Other: Well Location: Grass, Asphalt, Concrete, Woods, Other;
Additional Comments:
Total Depth of Well (T.D.): Screen Length: 5, 10, 15, 20 feet-other:
Depth to Water (D.T.W): <11 Well Diameter: 2, 4, 6, 8 Inches-other:
Field Parameters measured with: Casing Type: PVC, Steel other:
• ERM
Purge Rate: ~o mUmin Sampling Device: Peristaltic, Monsoon, Grundfos, Bailer, Other:
Tubing Type: ~. Teflon, Other: Measuring Point: TOC other:
Pump Intake (ft below M.P.): Color: Odor: Yes, No
Time: Volume DTW: Temp pH SpC DO ORP Turb
(min) Purged (feet) (°CJ (std units) (uS/cm) (mg/L) mV NTU
Stabalization (see note +/-+/-

+
/
-
+/-+/-+/-
Criteria' (gallons) below)3 3% 0.1 unit 3% 10% 10 mV 10%' Comments:
/"L:10 9 /3.17--------
1 i : 15' I /l1:, I ., • ? l/ I 11 ,CA b,Ol.1 3S-9, 'Z. 0,1\.f -'1-9. 9-'2. .. -Z. I
\'2..;'ZO I/~ 1> .99 l'zS ,l b .o-z. 31,o;g, 0 ,o7.., -!"f..o l ,b '2.-
1-Z.;'Z.5" 11~1 ( l{ .l S-19 .o &·Ob T1· 'l ,r 0 ,I 4 _ic,~ . l 1...o 1.f
,i...:Jo I/ 1., I ~.isi I 9, I f:>.o (J 3 9'1, 1 CL I q _, 09 . 3 ·i.1r
[1 :"'".>~ °'/"t I Ii .'~>, I p • I f:,.af 17-LO 0,17-..-110 . b -z..~'7
I -Z :~t O ' 14,11/ 19 .1. b.to lfoo .o cJ,1 '7 -11~ .v l .9 ":,
Official Sampling Date & Time: I 2. /vb / io --z. -i I 2 : l( O
Samples Collected: Analysis Requested: Preservative: Hold Time (days):
voes by SM6200B
~ (I) • Co nol measo,e depth lo bottom ot weD tKlti after purging and u mpling lo reduce rnuspendiig fines that may be resting on the wel bottom.
(2) • Stabd1zation criteria based on ttvee most recent consecutive measurements.
(3). Total drawdown in wel to be less than 0.1 m (0.32 ft). Pl.i"ging rate lo be lowered H neCUH,Y to keep drawdown below 0.1 m (0.32 ft),
(') •I· 10% when turbidity IS over 10 NTUs.
p W--0 0 ,__.
(l.t.o.r 1/ o.-~ru o .l-./
/ y
//
/,,
,,..,,
s.,....,ol.._d
V
WATER MATRIX SAMPLING
FIELD DATA FORM
Site Name: ~ Marshall UST Incident #40750
Sample Type: Circle one -(~ell, DPT, Surface_ Water, Potable WSW; other)
Sample ID: MW. r:J1..,-\,,/ CJ-'lo-z-z. {'l.cJ h
Date:. \1, jt) <, /tp-r, 'L
Sampling Personnel: Alex Ward
Weather Conditions: Sunny, Partly Cloudy, Cloudy, !faiJJ) Other
Time: \\')')
,.........._
Well Type: ('Flu~rface Completion, Stick Up Completion Well Tag Present:
II
ERM
Job#: o, ~ S-5" 3'"1-"
fiO No
Well Locked: /r.,e!;, No Lock Present~. No Well ID info. on Tag:@ No -tt6J.( Io r-c ,._I)
Well Bolted: ~No Well Cap: V/&&?No Well Cap Condition: ~ Replace. Other;
Well Pad Condition: ((food..,...Cracked, Replace, Other: Well Location: ~-. ~sphalt, Concrete, Woods, Other;
Additional Comments:
Total Depth of Well (T.D.): l "'l..,, Screen Length: 5, ,?rg,/ 15, 20 feet-other:
Depth to Water (D.T.W): 111 l O , 5--3 ,,. bh <-Well Diameter: ~ 4, 6, 8 Inches-other:
Field Parameters measured with: y'5 ! P,., Q.,.,.j..o Casing Type: ~Steel other:
Purge Rate: I ~ mUmin
Tubing Type:/Polye~ Teflon, Other:
Pump Intake (ff below M.P.): 1 o /
Time: Volume DTW: Temp
(min) Purged (feet) (OC)
Stabalization (see note +/.
Criteria2 (gallons) below)3 3%
l o\./~ ~ (0. 5"3 ~
to s--S" 1/~ Io ,<i?b 1"1 .3
11 oiJ 1/q I l. I 'l.-17-.L/
II o 5 I/ 1.,, 11.)) \+.o
11 10 J;,.,,, ,1.sz. 1'1-. I
1\15 , 11 -'1-1 !11.-1,,.,
llto I 1/v. 11,91-fl. '3,
112"5' I l/t.. \"Ll'Z.. f + .. ~
11 3-o i)/1.1 1-1.,>~ rt.l/ ti 3 s 1, 11.. ~ 11 .;;-
II'( c? 7 1/vr n ... '1J r-:t.3>
I l "1 S' "t. !/ 't. n ... <i9 \1--~
"VII )0 t ~/'( 11,o>" 11--~
ll~S 3 ,~.,.,, I "'l . ~
Official Sampling Date & Time:
Samples Collected: Analysis Requested:
voes by SM6200B
Notes:
Sampling Device:
Measuring Point:
Color: ( \c..r
pH SpC DO
(std units) (uS/cm) (mg/L)
+/. +/. +/.
0.1 unit 3% 10% ---
'5. 9b "?·:r,_,z.. 0 . I q
r:. 9b ;,n.1 O,o"g
5".q~ 7>'$5" I 0.1--.g
:;-• </ 7::. 7,fo ~L o.fl>
5".93 ~ '81,ll 0 -03
5",9 o T f'io-Z.. o.~o
5.?o '3(:,-g.5" o.i,
5'.~? '}b"i . .g 0 r "5 f"""
5", 9 ' '?> "f I • o o,~o
<; .'1( '31-1. I o,i(~
"Lf3 ~?-1.c. () .-i <l
',. '"' Yf'8.? O,"Z,I
S'195 '!> 'S 1 I 1'. o,,l>
Preservative:
~not measure depth to bottom of wel until after puri;t,g and sampling lo reduce rHUSJMflding fines that may be rn&Jng 00 lhe wd bottom
(2) • Stabilization cri1eri• based on three most recent corssecutive measutements.
(l). Total chwdowrl in weU to be Ina than 0.1 ~ (0.32 ft). Pwging rate to be lowered as neceaary to keep chwdown below 0.1 m (O.32 n).
(4) +/-10% when ubldityisover 10 NTUs.
r · ~ · ; Monsoon. Grundfos. Bailer, Other:
~ other:
Odor: Yes, ~o)
ORP Turb
mV NTU
+/. +/.
10 mV 10%4 Comments: ---{.)~ __ ,_
, -i.. '5'" >0.'L (l,_ V /17/•rf«,;~
19. ~ Jo. '1 .//
~4.z_ t./o.9 .............
101 .s 5?,b ,,._.,,
tf(o,S' ·3 (:;,, ~ //
I l +--•/ 'l.9. 3 ,,,..,,,.,..
l I I , 2-z-z . --z. /,,-
(0&,q Z 1.711 ✓-
9'-1.. 9 J 9. 3 .,, .,
c;1 Z.. I l t-1-//
17... '-( l, I 9 /.r"
bb.<i? tb. "> //
b~.g \ b. </ ~Le_£ .,
Hold Time (days):
WATER MATRIX SAMPLING
FIELD DA TA FORM • ERM
Site Name: Marshall UST Incident #40750 Job#: Oh?,553~
Sample Type: Circle one ~~PT, Surface Water, Potable WSW; other)
Sample ID: MW -o 7-v.J(;, -702 --Z I -Z.O()
Date: I 'Z /vb It v7..1..
Sampling Personnel: Alex Ward
Weather Conditions: Sunny, Partly Cloudy, Cloudy, <i3alii°;"\Other
Time: I OL{t)
Well Type: Flush Surface Completion, fi,.k 11~ompletion Well Tag Present: (YeD No
Well Locked: 6al, No Lock Present:-0. No Well ID info. on Tag: (!iiE? No
Well Bolted: Yes,® Well Cap: <w). No Well Cap Condition~oo~ Replace, Other;
Well Pad Condition: ~ Cracked, Replace, Other: Well Location: Grass, Asphalt, Concrete, Woods, Other; (». ..1 J
Additional Comments:
Total Depth of Well (T.D.): 2. .>., I::,') s Screen Length: 5, @:)15, 20 feet-other:
Depth to Water (D.T.W): <11 s. (-:f Well Diameter: ~4. 6, 8 Inches-other.
Field Parameters measured with: \(~,I. Yr o 0 ...,.-h-o Casing Type: 6'VC,Ateel other.
Purge Rate: {? c) mUmin Sampling Device: ~: Monsoon, Grundfos, Bailer, Other.
Tubing Type: ~e)Teflon, Other: Measuring Point: CIOO ~ other.
Pump Intake (ft u .. ,uvv M.P.): I.Y I~,, Color: l.~ Odor: Yes, CNo ':l_) ,,
Time: Volume DTW: Temp pH SpC DO
(min) Purged (feet) ("C) (std units) (uS/cm) (mg/L)
Stabalization (see note +/. +/. +/-+/.
Criteria2 (gallons) below)3 3% 0.1 unit 3% 10%
O?; "J~ (;/ I">. I "1----· --·
to ;ov f I t t. IS-'1 1 lb. b ~-,1 1-n ,b 'J, /"l.
(o ~o \ 1/"'l I'> -1 b lb.t >. "ZO ,":1-(.'-3.'"3 9
( 0 : ID 1/'1 15'. il{ ,~,'2. s-. 'Z.. '-( I S-t.--=,. 'S-, L{ ,r-
10:,r l /7-I '7 .1 i I b. 9 s. 1. 'L I bl{.~ ::5 .'l I
lo:?.-<> 3/~1 lb.t.(L 11 , ~ J,l f 16 q , r 11..1..9
ro:i..~ t IC:i,cCo I 'l. ( >.(~ I !11,. 3 t ."if9
(o ; 3o I 1/" 11.c~ I ~-1 ,..,3 lb~.( I . 1.1...
[o :,S-I l / "'l.-I? :=s-1 Ii :?. ,-•II lhb:1-CJ .. 1 "l
\O : '-tv ' 5/'1 ,1.~ 1j,3 S-. l v l b S-. "3 o., I h
Official Sampling Date & Time: c>..tobltJ)'l,;"7-io:L{,O
Samples Collected:
Notes:
Analysis Reguested:
voes by SM6200B
Preservative:
~nol meallXe depth to bottom orwev ~ after purging and umpa\Q to reduce reMApending fines that may be resting on the wd bottom.
(2) _ Stabilization criteria baaed on ltYee moat recent conwcutive mealUl'ements..
(3)-Total drawdown r, wen to be JeN lhan 0.1 m (0 32 n). Purging rate to be lowered asnecesuryto keep drawdown below 0_1 m (0.32 ft).
(4) +/. 10% when turbidity ii over 10 NTUs.
ORP Turb
mV NTU
+/. +/.
10mV 10%4 Comments: -,-v~ .,A-
1. Tl .l.f l(.l O { 1.£.,.,-/ o/..-_/ .. C 5,.
'l i(O, -=f "3 .'2"3, /_,
l,1.(9.'I '3.f 1-//
'l'((.1.. ~.b O .,,./
'Z'{ '3 , t" °3,l/ 3 /_,,
'2,1(9.-Y. l,,s'l ..-/
"l. 'S"-Z.. ~ z .. -i I ... ,,,
1.'i":'t -~ 3,17-r /
1\{~ ,2 ~.l b 5 ._..,.,k-c,,(
u
I
Hold Time {days):

ATTACHMENT B LABORATORY ANALYTICAL REPORT

#=CL#
December 12, 2022
LIMS USE: FR - SETH GOAD
LIMS OBJECT ID: 92640304
92640304
Project:
Pace Project No.:
RE:
Seth Goad
ERM
,
MSS 500 Gal UST
Dear Seth Goad:
Enclosed are the analytical results for sample(s) received by the laboratory on December 06, 2022. The results relate only
to the samples included in this report. Results reported herein conform to the applicable TNI/NELAC Standards and the
laboratory's Quality Manual, where applicable, unless otherwise noted in the body of the report.
The test results provided in this final report were generated by each of the following laboratories within the Pace Network:
• Pace Analytical Services - Charlotte
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
Justin K Chandler for
[e-mail]
Project Manager
Lorri Patton
1(828)254-7176
Enclosures
cc:Andrea Brazell, ERM
Vince Eckert
Mike Hays, ERM
Qiqi Liang, ERM
Program Manager, Duke Energy
Jacqueline Roddy
Adrian Velazquez, ERM
Alex Ward, ERM
Christine Weaver, ERM
Brian Wilson
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 1 of 25
#=CP#
CERTIFICATIONS
Pace Project No.:
Project:
92640304
MSS 500 Gal UST
Pace Analytical Services Charlotte
South Carolina Laboratory ID: 99006
9800 Kincey Ave. Ste 100, Huntersville, NC 28078
North Carolina Drinking Water Certification #: 37706
North Carolina Field Services Certification #: 5342
North Carolina Wastewater Certification #: 12
South Carolina Laboratory ID: 99006
South Carolina Certification #: 99006001
South Carolina Drinking Water Cert. #: 99006003
Florida/NELAP Certification #: E87627
Kentucky UST Certification #: 84
Louisiana DoH Drinking Water #: LA029
Virginia/VELAP Certification #: 460221
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 2 of 25
#=SS#
SAMPLE SUMMARY
Pace Project No.:
Project:
92640304
MSS 500 Gal UST
Lab ID Sample ID Matrix Date Collected Date Received
92640304001 FD-01-WQ-20221206 Water 12/06/22 00:00 12/06/22 14:29
92640304002 MW-01-WQ-20221206 Water 12/06/22 12:40 12/06/22 14:29
92640304003 MW-02-WQ-20221206 Water 12/06/22 11:55 12/06/22 14:29
92640304004 MW-03-WQ-20221206 Water 12/06/22 10:40 12/06/22 14:29
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 3 of 25
#=SA#
SAMPLE ANALYTE COUNT
Pace Project No.:
Project:
92640304
MSS 500 Gal UST
Lab ID Sample ID Method
Analytes
Reported LaboratoryAnalysts
92640304001 FD-01-WQ-20221206 SM 6200B 69 PASI-CCL
92640304002 MW-01-WQ-20221206 SM 6200B 69 PASI-CCL
92640304003 MW-02-WQ-20221206 SM 6200B 69 PASI-CCL
92640304004 MW-03-WQ-20221206 SM 6200B 69 PASI-CCL
PASI-C = Pace Analytical Services - Charlotte
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 4 of 25
#=HO#
SUMMARY OF DETECTION
Pace Project No.:
Project:
92640304
MSS 500 Gal UST
Parameters AnalyzedResult
Lab Sample ID
Report Limit QualifiersUnitsMethod
Client Sample ID
92640304001 FD-01-WQ-20221206
tert-Amyl Alcohol 22100 ug/L 12/09/22 07:225000SM 6200B
Benzene 8590 ug/L 12/09/22 07:2225.0SM 6200B
1,2-Dichloroethane 44.5 ug/L 12/09/22 07:2225.0SM 6200B
Diisopropyl ether 2460 ug/L 12/09/22 07:2225.0SM 6200B
Ethylbenzene 473 ug/L 12/09/22 07:2225.0SM 6200B
Isopropylbenzene (Cumene)31.0 ug/L 12/09/22 07:2225.0SM 6200B
Methyl-tert-butyl ether 971 ug/L 12/09/22 07:2225.0SM 6200B
Naphthalene 159 ug/L 12/09/22 07:22100SM 6200B
n-Propylbenzene 33.7 ug/L 12/09/22 07:2225.0SM 6200B
Toluene 2590 ug/L 12/09/22 07:2225.0SM 6200B
1,2,4-Trimethylbenzene 207 ug/L 12/09/22 07:2225.0SM 6200B
1,3,5-Trimethylbenzene 46.9 ug/L 12/09/22 07:2225.0SM 6200B
m&p-Xylene 949 ug/L 12/09/22 07:2250.0SM 6200B
o-Xylene 508 ug/L 12/09/22 07:2225.0SM 6200B
92640304002 MW-01-WQ-20221206
tert-Amyl Alcohol 22300 ug/L 12/09/22 07:405000SM 6200B
Benzene 8280 ug/L 12/09/22 07:4025.0SM 6200B
1,2-Dichloroethane 42.4 ug/L 12/09/22 07:4025.0SM 6200B
Diisopropyl ether 2390 ug/L 12/09/22 07:4025.0SM 6200B
Ethylbenzene 452 ug/L 12/09/22 07:4025.0SM 6200B
Isopropylbenzene (Cumene)29.7 ug/L 12/09/22 07:4025.0SM 6200B
Methyl-tert-butyl ether 945 ug/L 12/09/22 07:4025.0SM 6200B
Naphthalene 165 ug/L 12/09/22 07:40100SM 6200B
n-Propylbenzene 32.0 ug/L 12/09/22 07:4025.0SM 6200B
Toluene 2540 ug/L 12/09/22 07:4025.0SM 6200B
1,2,4-Trimethylbenzene 200 ug/L 12/09/22 07:4025.0SM 6200B
1,3,5-Trimethylbenzene 44.2 ug/L 12/09/22 07:4025.0SM 6200B
m&p-Xylene 923 ug/L 12/09/22 07:4050.0SM 6200B
o-Xylene 491 ug/L 12/09/22 07:4025.0SM 6200B
92640304003 MW-02-WQ-20221206
Diisopropyl ether 15.6 ug/L 12/09/22 06:090.50SM 6200B
Methyl-tert-butyl ether 12.5 ug/L 12/09/22 06:090.50SM 6200B
92640304004 MW-03-WQ-20221206
Benzene 2.1 ug/L 12/09/22 05:510.50SM 6200B
Diisopropyl ether 55.8 ug/L 12/09/22 05:510.50SM 6200B
Methyl-tert-butyl ether 5.0 ug/L 12/09/22 05:510.50SM 6200B
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 5 of 25
#=NA#
PROJECT NARRATIVE
Pace Project No.:
Project:
92640304
MSS 500 Gal UST
Method:
Client:Duke Energy
SM 6200B
Date:December 12, 2022
Description:6200B MSV
General Information:
4 samples were analyzed for SM 6200B by Pace Analytical Services Charlotte. All samples were received in acceptable condition with
any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form (SCUR) attached at the end ofthis report.
Hold Time:
The samples were analyzed within the method required hold times with any exceptions noted below.
Initial Calibrations (including MS Tune as applicable):
All criteria were within method requirements with any exceptions noted below.
Continuing Calibration:
All criteria were within method requirements with any exceptions noted below.
Internal Standards:
All internal standards were within QC limits with any exceptions noted below.
Surrogates:
All surrogates were within QC limits with any exceptions noted below.
Method Blank:
All analytes were below the report limit in the method blank, where applicable, with any exceptions noted below.
Laboratory Control Spike:
All laboratory control spike compounds were within QC limits with any exceptions noted below.
Matrix Spikes:
All percent recoveries and relative percent differences (RPDs) were within acceptance criteria with any exceptions noted below.
QC Batch: 742126
A matrix spike and/or matrix spike duplicate (MS/MSD) were performed on the following sample(s): 92639659004
M1: Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.
• MS (Lab ID: 3860749)
• Dichlorodifluoromethane
• Hexachloro-1,3-butadiene
• tert-Butyl Formate
• MSD (Lab ID: 3860750)
• 1,1,1,2-Tetrachloroethane
• 1,1,1-Trichloroethane
• 1,1-Dichloroethene
• 1,1-Dichloropropene
• 1,2,3-Trichlorobenzene
• 1,2,4-Trichlorobenzene
• 1,3-Dichlorobenzene
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 6 of 25
#=NA#
PROJECT NARRATIVE
Pace Project No.:
Project:
92640304
MSS 500 Gal UST
Method:
Client:Duke Energy
SM 6200B
Date:December 12, 2022
Description:6200B MSV
QC Batch: 742126
A matrix spike and/or matrix spike duplicate (MS/MSD) were performed on the following sample(s): 92639659004
M1: Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.
• 2,2-Dichloropropane
• Bromomethane
• Carbon tetrachloride
• Chlorobenzene
• Chloroethane
• Dibromomethane
• Dichlorodifluoromethane
• Ethylbenzene
• Hexachloro-1,3-butadiene
• Naphthalene
• Trichloroethene
• Trichlorofluoromethane
• Vinyl chloride
• m&p-Xylene
• n-Butylbenzene
• n-Propylbenzene
• sec-Butylbenzene
• tert-Butyl Alcohol
• tert-Butyl Formate
Additional Comments:
This data package has been reviewed for quality and completeness and is approved for release.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 7 of 25
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92640304
MSS 500 Gal UST
Sample:FD-01-WQ-20221206 Lab ID:92640304001 Collected:12/06/22 00:00 Received:12/06/22 14:29 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B
Pace Analytical Services - Charlotte
6200B MSV
tert-Amyl Alcohol 22100 ug/L 12/09/22 07:22 75-85-4500050
tert-Amylmethyl ether ND ug/L 12/09/22 07:22 994-05-850050
Benzene 8590 ug/L 12/09/22 07:22 71-43-225.0 50
Bromobenzene ND ug/L 12/09/22 07:22 108-86-125.0 50
Bromochloromethane ND ug/L 12/09/22 07:22 74-97-525.0 50
Bromodichloromethane ND ug/L 12/09/22 07:22 75-27-425.0 50
Bromoform ND ug/L 12/09/22 07:22 75-25-225.0 50
Bromomethane ND ug/L 12/09/22 07:22 74-83-925050
tert-Butyl Alcohol ND ug/L 12/09/22 07:22 75-65-0250050
n-Butylbenzene ND ug/L 12/09/22 07:22 104-51-825.0 50
sec-Butylbenzene ND ug/L 12/09/22 07:22 135-98-825.0 50
tert-Butylbenzene ND ug/L 12/09/22 07:22 98-06-625.0 50
tert-Butyl Formate ND ug/L 12/09/22 07:22 762-75-4250050
Carbon tetrachloride ND ug/L 12/09/22 07:22 56-23-525.0 50
Chlorobenzene ND ug/L 12/09/22 07:22 108-90-725.0 50
Chloroethane ND ug/L 12/09/22 07:22 75-00-350.0 50
Chloroform ND ug/L 12/09/22 07:22 67-66-325.0 50
Chloromethane ND ug/L 12/09/22 07:22 74-87-350.0 50
2-Chlorotoluene ND ug/L 12/09/22 07:22 95-49-825.0 50
4-Chlorotoluene ND ug/L 12/09/22 07:22 106-43-425.0 50
1,2-Dibromo-3-chloropropane ND ug/L 12/09/22 07:22 96-12-850.0 50
Dibromochloromethane ND ug/L 12/09/22 07:22 124-48-125.0 50
1,2-Dibromoethane (EDB)ND ug/L 12/09/22 07:22 106-93-425.0 50
Dibromomethane ND ug/L 12/09/22 07:22 74-95-325.0 50
1,2-Dichlorobenzene ND ug/L 12/09/22 07:22 95-50-125.0 50
1,3-Dichlorobenzene ND ug/L 12/09/22 07:22 541-73-125.0 50
1,4-Dichlorobenzene ND ug/L 12/09/22 07:22 106-46-725.0 50
Dichlorodifluoromethane ND ug/L 12/09/22 07:22 75-71-825.0 50
1,1-Dichloroethane ND ug/L 12/09/22 07:22 75-34-325.0 50
1,2-Dichloroethane 44.5 ug/L 12/09/22 07:22 107-06-225.0 50
1,1-Dichloroethene ND ug/L 12/09/22 07:22 75-35-425.0 50
cis-1,2-Dichloroethene ND ug/L 12/09/22 07:22 156-59-225.0 50
trans-1,2-Dichloroethene ND ug/L 12/09/22 07:22 156-60-525.0 50
1,2-Dichloropropane ND ug/L 12/09/22 07:22 78-87-525.0 50
1,3-Dichloropropane ND ug/L 12/09/22 07:22 142-28-925.0 50
2,2-Dichloropropane ND ug/L 12/09/22 07:22 594-20-725.0 50
1,1-Dichloropropene ND ug/L 12/09/22 07:22 563-58-625.0 50
cis-1,3-Dichloropropene ND ug/L 12/09/22 07:22 10061-01-525.0 50
trans-1,3-Dichloropropene ND ug/L 12/09/22 07:22 10061-02-625.0 50
Diisopropyl ether 2460 ug/L 12/09/22 07:22 108-20-325.0 50
Ethanol ND ug/L 12/09/22 07:22 64-17-51000050
Ethylbenzene 473 ug/L 12/09/22 07:22 100-41-425.0 50
Ethyl-tert-butyl ether ND ug/L 12/09/22 07:22 637-92-350050
Hexachloro-1,3-butadiene ND ug/L 12/09/22 07:22 87-68-310050
Isopropylbenzene (Cumene)31.0 ug/L 12/09/22 07:22 98-82-825.0 50
Methylene Chloride ND ug/L 12/09/22 07:22 75-09-210050
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 12/12/2022 05:14 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 8 of 25
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92640304
MSS 500 Gal UST
Sample:FD-01-WQ-20221206 Lab ID:92640304001 Collected:12/06/22 00:00 Received:12/06/22 14:29 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B
Pace Analytical Services - Charlotte
6200B MSV
Methyl-tert-butyl ether 971 ug/L 12/09/22 07:22 1634-04-425.0 50
Naphthalene 159 ug/L 12/09/22 07:22 91-20-310050
n-Propylbenzene 33.7 ug/L 12/09/22 07:22 103-65-125.0 50
Styrene ND ug/L 12/09/22 07:22 100-42-525.0 50
1,1,1,2-Tetrachloroethane ND ug/L 12/09/22 07:22 630-20-625.0 50
1,1,2,2-Tetrachloroethane ND ug/L 12/09/22 07:22 79-34-525.0 50
Tetrachloroethene ND ug/L 12/09/22 07:22 127-18-425.0 50
Toluene 2590 ug/L 12/09/22 07:22 108-88-325.0 50
1,2,3-Trichlorobenzene ND ug/L 12/09/22 07:22 87-61-610050
1,2,4-Trichlorobenzene ND ug/L 12/09/22 07:22 120-82-110050
1,1,1-Trichloroethane ND ug/L 12/09/22 07:22 71-55-625.0 50
1,1,2-Trichloroethane ND ug/L 12/09/22 07:22 79-00-525.0 50
Trichloroethene ND ug/L 12/09/22 07:22 79-01-625.0 50
Trichlorofluoromethane ND ug/L 12/09/22 07:22 75-69-450.0 50
1,2,3-Trichloropropane ND ug/L 12/09/22 07:22 96-18-425.0 50
1,2,4-Trimethylbenzene 207 ug/L 12/09/22 07:22 95-63-625.0 50
1,3,5-Trimethylbenzene 46.9 ug/L 12/09/22 07:22 108-67-825.0 50
Vinyl chloride ND ug/L 12/09/22 07:22 75-01-450.0 50
m&p-Xylene 949 ug/L 12/09/22 07:22 179601-23-150.0 50
o-Xylene 508 ug/L 12/09/22 07:22 95-47-625.0 50
Surrogates
1,2-Dichloroethane-d4 (S)95 %12/09/22 07:22 17060-07-070-130 50
4-Bromofluorobenzene (S)96 %12/09/22 07:22 460-00-470-130 50
Toluene-d8 (S)98 %12/09/22 07:22 2037-26-570-130 50
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 12/12/2022 05:14 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 9 of 25
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92640304
MSS 500 Gal UST
Sample:MW-01-WQ-20221206 Lab ID:92640304002 Collected:12/06/22 12:40 Received:12/06/22 14:29 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B
Pace Analytical Services - Charlotte
6200B MSV
tert-Amyl Alcohol 22300 ug/L 12/09/22 07:40 75-85-4500050
tert-Amylmethyl ether ND ug/L 12/09/22 07:40 994-05-850050
Benzene 8280 ug/L 12/09/22 07:40 71-43-225.0 50
Bromobenzene ND ug/L 12/09/22 07:40 108-86-125.0 50
Bromochloromethane ND ug/L 12/09/22 07:40 74-97-525.0 50
Bromodichloromethane ND ug/L 12/09/22 07:40 75-27-425.0 50
Bromoform ND ug/L 12/09/22 07:40 75-25-225.0 50
Bromomethane ND ug/L 12/09/22 07:40 74-83-925050
tert-Butyl Alcohol ND ug/L 12/09/22 07:40 75-65-0250050
n-Butylbenzene ND ug/L 12/09/22 07:40 104-51-825.0 50
sec-Butylbenzene ND ug/L 12/09/22 07:40 135-98-825.0 50
tert-Butylbenzene ND ug/L 12/09/22 07:40 98-06-625.0 50
tert-Butyl Formate ND ug/L 12/09/22 07:40 762-75-4250050
Carbon tetrachloride ND ug/L 12/09/22 07:40 56-23-525.0 50
Chlorobenzene ND ug/L 12/09/22 07:40 108-90-725.0 50
Chloroethane ND ug/L 12/09/22 07:40 75-00-350.0 50
Chloroform ND ug/L 12/09/22 07:40 67-66-325.0 50
Chloromethane ND ug/L 12/09/22 07:40 74-87-350.0 50
2-Chlorotoluene ND ug/L 12/09/22 07:40 95-49-825.0 50
4-Chlorotoluene ND ug/L 12/09/22 07:40 106-43-425.0 50
1,2-Dibromo-3-chloropropane ND ug/L 12/09/22 07:40 96-12-850.0 50
Dibromochloromethane ND ug/L 12/09/22 07:40 124-48-125.0 50
1,2-Dibromoethane (EDB)ND ug/L 12/09/22 07:40 106-93-425.0 50
Dibromomethane ND ug/L 12/09/22 07:40 74-95-325.0 50
1,2-Dichlorobenzene ND ug/L 12/09/22 07:40 95-50-125.0 50
1,3-Dichlorobenzene ND ug/L 12/09/22 07:40 541-73-125.0 50
1,4-Dichlorobenzene ND ug/L 12/09/22 07:40 106-46-725.0 50
Dichlorodifluoromethane ND ug/L 12/09/22 07:40 75-71-825.0 50
1,1-Dichloroethane ND ug/L 12/09/22 07:40 75-34-325.0 50
1,2-Dichloroethane 42.4 ug/L 12/09/22 07:40 107-06-225.0 50
1,1-Dichloroethene ND ug/L 12/09/22 07:40 75-35-425.0 50
cis-1,2-Dichloroethene ND ug/L 12/09/22 07:40 156-59-225.0 50
trans-1,2-Dichloroethene ND ug/L 12/09/22 07:40 156-60-525.0 50
1,2-Dichloropropane ND ug/L 12/09/22 07:40 78-87-525.0 50
1,3-Dichloropropane ND ug/L 12/09/22 07:40 142-28-925.0 50
2,2-Dichloropropane ND ug/L 12/09/22 07:40 594-20-725.0 50
1,1-Dichloropropene ND ug/L 12/09/22 07:40 563-58-625.0 50
cis-1,3-Dichloropropene ND ug/L 12/09/22 07:40 10061-01-525.0 50
trans-1,3-Dichloropropene ND ug/L 12/09/22 07:40 10061-02-625.0 50
Diisopropyl ether 2390 ug/L 12/09/22 07:40 108-20-325.0 50
Ethanol ND ug/L 12/09/22 07:40 64-17-51000050
Ethylbenzene 452 ug/L 12/09/22 07:40 100-41-425.0 50
Ethyl-tert-butyl ether ND ug/L 12/09/22 07:40 637-92-350050
Hexachloro-1,3-butadiene ND ug/L 12/09/22 07:40 87-68-310050
Isopropylbenzene (Cumene)29.7 ug/L 12/09/22 07:40 98-82-825.0 50
Methylene Chloride ND ug/L 12/09/22 07:40 75-09-210050
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 12/12/2022 05:14 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 10 of 25
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92640304
MSS 500 Gal UST
Sample:MW-01-WQ-20221206 Lab ID:92640304002 Collected:12/06/22 12:40 Received:12/06/22 14:29 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B
Pace Analytical Services - Charlotte
6200B MSV
Methyl-tert-butyl ether 945 ug/L 12/09/22 07:40 1634-04-425.0 50
Naphthalene 165 ug/L 12/09/22 07:40 91-20-310050
n-Propylbenzene 32.0 ug/L 12/09/22 07:40 103-65-125.0 50
Styrene ND ug/L 12/09/22 07:40 100-42-525.0 50
1,1,1,2-Tetrachloroethane ND ug/L 12/09/22 07:40 630-20-625.0 50
1,1,2,2-Tetrachloroethane ND ug/L 12/09/22 07:40 79-34-525.0 50
Tetrachloroethene ND ug/L 12/09/22 07:40 127-18-425.0 50
Toluene 2540 ug/L 12/09/22 07:40 108-88-325.0 50
1,2,3-Trichlorobenzene ND ug/L 12/09/22 07:40 87-61-610050
1,2,4-Trichlorobenzene ND ug/L 12/09/22 07:40 120-82-110050
1,1,1-Trichloroethane ND ug/L 12/09/22 07:40 71-55-625.0 50
1,1,2-Trichloroethane ND ug/L 12/09/22 07:40 79-00-525.0 50
Trichloroethene ND ug/L 12/09/22 07:40 79-01-625.0 50
Trichlorofluoromethane ND ug/L 12/09/22 07:40 75-69-450.0 50
1,2,3-Trichloropropane ND ug/L 12/09/22 07:40 96-18-425.0 50
1,2,4-Trimethylbenzene 200 ug/L 12/09/22 07:40 95-63-625.0 50
1,3,5-Trimethylbenzene 44.2 ug/L 12/09/22 07:40 108-67-825.0 50
Vinyl chloride ND ug/L 12/09/22 07:40 75-01-450.0 50
m&p-Xylene 923 ug/L 12/09/22 07:40 179601-23-150.0 50
o-Xylene 491 ug/L 12/09/22 07:40 95-47-625.0 50
Surrogates
1,2-Dichloroethane-d4 (S)95 %12/09/22 07:40 17060-07-070-130 50
4-Bromofluorobenzene (S)96 %12/09/22 07:40 460-00-470-130 50
Toluene-d8 (S)98 %12/09/22 07:40 2037-26-570-130 50
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 12/12/2022 05:14 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 11 of 25
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92640304
MSS 500 Gal UST
Sample:MW-02-WQ-20221206 Lab ID:92640304003 Collected:12/06/22 11:55 Received:12/06/22 14:29 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B
Pace Analytical Services - Charlotte
6200B MSV
tert-Amyl Alcohol ND ug/L 12/09/22 06:09 75-85-41001
tert-Amylmethyl ether ND ug/L 12/09/22 06:09 994-05-810.0 1
Benzene ND ug/L 12/09/22 06:09 71-43-20.50 1
Bromobenzene ND ug/L 12/09/22 06:09 108-86-10.50 1
Bromochloromethane ND ug/L 12/09/22 06:09 74-97-50.50 1
Bromodichloromethane ND ug/L 12/09/22 06:09 75-27-40.50 1
Bromoform ND ug/L 12/09/22 06:09 75-25-20.50 1
Bromomethane ND ug/L 12/09/22 06:09 74-83-95.0 1
tert-Butyl Alcohol ND ug/L 12/09/22 06:09 75-65-050.0 1
n-Butylbenzene ND ug/L 12/09/22 06:09 104-51-80.50 1
sec-Butylbenzene ND ug/L 12/09/22 06:09 135-98-80.50 1
tert-Butylbenzene ND ug/L 12/09/22 06:09 98-06-60.50 1
tert-Butyl Formate ND ug/L 12/09/22 06:09 762-75-450.0 1
Carbon tetrachloride ND ug/L 12/09/22 06:09 56-23-50.50 1
Chlorobenzene ND ug/L 12/09/22 06:09 108-90-70.50 1
Chloroethane ND ug/L 12/09/22 06:09 75-00-31.0 1
Chloroform ND ug/L 12/09/22 06:09 67-66-30.50 1
Chloromethane ND ug/L 12/09/22 06:09 74-87-31.0 1
2-Chlorotoluene ND ug/L 12/09/22 06:09 95-49-80.50 1
4-Chlorotoluene ND ug/L 12/09/22 06:09 106-43-40.50 1
1,2-Dibromo-3-chloropropane ND ug/L 12/09/22 06:09 96-12-81.0 1
Dibromochloromethane ND ug/L 12/09/22 06:09 124-48-10.50 1
1,2-Dibromoethane (EDB)ND ug/L 12/09/22 06:09 106-93-40.50 1
Dibromomethane ND ug/L 12/09/22 06:09 74-95-30.50 1
1,2-Dichlorobenzene ND ug/L 12/09/22 06:09 95-50-10.50 1
1,3-Dichlorobenzene ND ug/L 12/09/22 06:09 541-73-10.50 1
1,4-Dichlorobenzene ND ug/L 12/09/22 06:09 106-46-70.50 1
Dichlorodifluoromethane ND ug/L 12/09/22 06:09 75-71-80.50 1
1,1-Dichloroethane ND ug/L 12/09/22 06:09 75-34-30.50 1
1,2-Dichloroethane ND ug/L 12/09/22 06:09 107-06-20.50 1
1,1-Dichloroethene ND ug/L 12/09/22 06:09 75-35-40.50 1
cis-1,2-Dichloroethene ND ug/L 12/09/22 06:09 156-59-20.50 1
trans-1,2-Dichloroethene ND ug/L 12/09/22 06:09 156-60-50.50 1
1,2-Dichloropropane ND ug/L 12/09/22 06:09 78-87-50.50 1
1,3-Dichloropropane ND ug/L 12/09/22 06:09 142-28-90.50 1
2,2-Dichloropropane ND ug/L 12/09/22 06:09 594-20-70.50 1
1,1-Dichloropropene ND ug/L 12/09/22 06:09 563-58-60.50 1
cis-1,3-Dichloropropene ND ug/L 12/09/22 06:09 10061-01-50.50 1
trans-1,3-Dichloropropene ND ug/L 12/09/22 06:09 10061-02-60.50 1
Diisopropyl ether 15.6 ug/L 12/09/22 06:09 108-20-30.50 1
Ethanol ND ug/L 12/09/22 06:09 64-17-52001
Ethylbenzene ND ug/L 12/09/22 06:09 100-41-40.50 1
Ethyl-tert-butyl ether ND ug/L 12/09/22 06:09 637-92-310.0 1
Hexachloro-1,3-butadiene ND ug/L 12/09/22 06:09 87-68-32.0 1
Isopropylbenzene (Cumene)ND ug/L 12/09/22 06:09 98-82-80.50 1
Methylene Chloride ND ug/L 12/09/22 06:09 75-09-22.0 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 12/12/2022 05:14 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 12 of 25
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92640304
MSS 500 Gal UST
Sample:MW-02-WQ-20221206 Lab ID:92640304003 Collected:12/06/22 11:55 Received:12/06/22 14:29 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B
Pace Analytical Services - Charlotte
6200B MSV
Methyl-tert-butyl ether 12.5 ug/L 12/09/22 06:09 1634-04-40.50 1
Naphthalene ND ug/L 12/09/22 06:09 91-20-32.0 1
n-Propylbenzene ND ug/L 12/09/22 06:09 103-65-10.50 1
Styrene ND ug/L 12/09/22 06:09 100-42-50.50 1
1,1,1,2-Tetrachloroethane ND ug/L 12/09/22 06:09 630-20-60.50 1
1,1,2,2-Tetrachloroethane ND ug/L 12/09/22 06:09 79-34-50.50 1
Tetrachloroethene ND ug/L 12/09/22 06:09 127-18-40.50 1
Toluene ND ug/L 12/09/22 06:09 108-88-30.50 1
1,2,3-Trichlorobenzene ND ug/L 12/09/22 06:09 87-61-62.0 1
1,2,4-Trichlorobenzene ND ug/L 12/09/22 06:09 120-82-12.0 1
1,1,1-Trichloroethane ND ug/L 12/09/22 06:09 71-55-60.50 1
1,1,2-Trichloroethane ND ug/L 12/09/22 06:09 79-00-50.50 1
Trichloroethene ND ug/L 12/09/22 06:09 79-01-60.50 1
Trichlorofluoromethane ND ug/L 12/09/22 06:09 75-69-41.0 1
1,2,3-Trichloropropane ND ug/L 12/09/22 06:09 96-18-40.50 1
1,2,4-Trimethylbenzene ND ug/L 12/09/22 06:09 95-63-60.50 1
1,3,5-Trimethylbenzene ND ug/L 12/09/22 06:09 108-67-80.50 1
Vinyl chloride ND ug/L 12/09/22 06:09 75-01-41.0 1
m&p-Xylene ND ug/L 12/09/22 06:09 179601-23-11.0 1
o-Xylene ND ug/L 12/09/22 06:09 95-47-60.50 1
Surrogates
1,2-Dichloroethane-d4 (S)95 %12/09/22 06:09 17060-07-070-130 1
4-Bromofluorobenzene (S)96 %12/09/22 06:09 460-00-470-130 1
Toluene-d8 (S)100 %12/09/22 06:09 2037-26-570-130 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 12/12/2022 05:14 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 13 of 25
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92640304
MSS 500 Gal UST
Sample:MW-03-WQ-20221206 Lab ID:92640304004 Collected:12/06/22 10:40 Received:12/06/22 14:29 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B
Pace Analytical Services - Charlotte
6200B MSV
tert-Amyl Alcohol ND ug/L 12/09/22 05:51 75-85-41001
tert-Amylmethyl ether ND ug/L 12/09/22 05:51 994-05-810.0 1
Benzene 2.1 ug/L 12/09/22 05:51 71-43-20.50 1
Bromobenzene ND ug/L 12/09/22 05:51 108-86-10.50 1
Bromochloromethane ND ug/L 12/09/22 05:51 74-97-50.50 1
Bromodichloromethane ND ug/L 12/09/22 05:51 75-27-40.50 1
Bromoform ND ug/L 12/09/22 05:51 75-25-20.50 1
Bromomethane ND ug/L 12/09/22 05:51 74-83-95.0 1
tert-Butyl Alcohol ND ug/L 12/09/22 05:51 75-65-050.0 1
n-Butylbenzene ND ug/L 12/09/22 05:51 104-51-80.50 1
sec-Butylbenzene ND ug/L 12/09/22 05:51 135-98-80.50 1
tert-Butylbenzene ND ug/L 12/09/22 05:51 98-06-60.50 1
tert-Butyl Formate ND ug/L 12/09/22 05:51 762-75-450.0 1
Carbon tetrachloride ND ug/L 12/09/22 05:51 56-23-50.50 1
Chlorobenzene ND ug/L 12/09/22 05:51 108-90-70.50 1
Chloroethane ND ug/L 12/09/22 05:51 75-00-31.0 1
Chloroform ND ug/L 12/09/22 05:51 67-66-30.50 1
Chloromethane ND ug/L 12/09/22 05:51 74-87-31.0 1
2-Chlorotoluene ND ug/L 12/09/22 05:51 95-49-80.50 1
4-Chlorotoluene ND ug/L 12/09/22 05:51 106-43-40.50 1
1,2-Dibromo-3-chloropropane ND ug/L 12/09/22 05:51 96-12-81.0 1
Dibromochloromethane ND ug/L 12/09/22 05:51 124-48-10.50 1
1,2-Dibromoethane (EDB)ND ug/L 12/09/22 05:51 106-93-40.50 1
Dibromomethane ND ug/L 12/09/22 05:51 74-95-30.50 1
1,2-Dichlorobenzene ND ug/L 12/09/22 05:51 95-50-10.50 1
1,3-Dichlorobenzene ND ug/L 12/09/22 05:51 541-73-10.50 1
1,4-Dichlorobenzene ND ug/L 12/09/22 05:51 106-46-70.50 1
Dichlorodifluoromethane ND ug/L 12/09/22 05:51 75-71-80.50 1
1,1-Dichloroethane ND ug/L 12/09/22 05:51 75-34-30.50 1
1,2-Dichloroethane ND ug/L 12/09/22 05:51 107-06-20.50 1
1,1-Dichloroethene ND ug/L 12/09/22 05:51 75-35-40.50 1
cis-1,2-Dichloroethene ND ug/L 12/09/22 05:51 156-59-20.50 1
trans-1,2-Dichloroethene ND ug/L 12/09/22 05:51 156-60-50.50 1
1,2-Dichloropropane ND ug/L 12/09/22 05:51 78-87-50.50 1
1,3-Dichloropropane ND ug/L 12/09/22 05:51 142-28-90.50 1
2,2-Dichloropropane ND ug/L 12/09/22 05:51 594-20-70.50 1
1,1-Dichloropropene ND ug/L 12/09/22 05:51 563-58-60.50 1
cis-1,3-Dichloropropene ND ug/L 12/09/22 05:51 10061-01-50.50 1
trans-1,3-Dichloropropene ND ug/L 12/09/22 05:51 10061-02-60.50 1
Diisopropyl ether 55.8 ug/L 12/09/22 05:51 108-20-30.50 1
Ethanol ND ug/L 12/09/22 05:51 64-17-52001
Ethylbenzene ND ug/L 12/09/22 05:51 100-41-40.50 1
Ethyl-tert-butyl ether ND ug/L 12/09/22 05:51 637-92-310.0 1
Hexachloro-1,3-butadiene ND ug/L 12/09/22 05:51 87-68-32.0 1
Isopropylbenzene (Cumene)ND ug/L 12/09/22 05:51 98-82-80.50 1
Methylene Chloride ND ug/L 12/09/22 05:51 75-09-22.0 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 12/12/2022 05:14 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 14 of 25
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92640304
MSS 500 Gal UST
Sample:MW-03-WQ-20221206 Lab ID:92640304004 Collected:12/06/22 10:40 Received:12/06/22 14:29 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: SM 6200B
Pace Analytical Services - Charlotte
6200B MSV
Methyl-tert-butyl ether 5.0 ug/L 12/09/22 05:51 1634-04-40.50 1
Naphthalene ND ug/L 12/09/22 05:51 91-20-32.0 1
n-Propylbenzene ND ug/L 12/09/22 05:51 103-65-10.50 1
Styrene ND ug/L 12/09/22 05:51 100-42-50.50 1
1,1,1,2-Tetrachloroethane ND ug/L 12/09/22 05:51 630-20-60.50 1
1,1,2,2-Tetrachloroethane ND ug/L 12/09/22 05:51 79-34-50.50 1
Tetrachloroethene ND ug/L 12/09/22 05:51 127-18-40.50 1
Toluene ND ug/L 12/09/22 05:51 108-88-30.50 1
1,2,3-Trichlorobenzene ND ug/L 12/09/22 05:51 87-61-62.0 1
1,2,4-Trichlorobenzene ND ug/L 12/09/22 05:51 120-82-12.0 1
1,1,1-Trichloroethane ND ug/L 12/09/22 05:51 71-55-60.50 1
1,1,2-Trichloroethane ND ug/L 12/09/22 05:51 79-00-50.50 1
Trichloroethene ND ug/L 12/09/22 05:51 79-01-60.50 1
Trichlorofluoromethane ND ug/L 12/09/22 05:51 75-69-41.0 1
1,2,3-Trichloropropane ND ug/L 12/09/22 05:51 96-18-40.50 1
1,2,4-Trimethylbenzene ND ug/L 12/09/22 05:51 95-63-60.50 1
1,3,5-Trimethylbenzene ND ug/L 12/09/22 05:51 108-67-80.50 1
Vinyl chloride ND ug/L 12/09/22 05:51 75-01-41.0 1
m&p-Xylene ND ug/L 12/09/22 05:51 179601-23-11.0 1
o-Xylene ND ug/L 12/09/22 05:51 95-47-60.50 1
Surrogates
1,2-Dichloroethane-d4 (S)92 %12/09/22 05:51 17060-07-070-130 1
4-Bromofluorobenzene (S)94 %12/09/22 05:51 460-00-470-130 1
Toluene-d8 (S)99 %12/09/22 05:51 2037-26-570-130 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 12/12/2022 05:14 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 15 of 25
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92640304
MSS 500 Gal UST
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:
742126
SM 6200B
SM 6200B
6200B MSV
Laboratory:Pace Analytical Services - Charlotte
Associated Lab Samples:92640304001, 92640304002, 92640304003, 92640304004
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK:3860747
Associated Lab Samples:92640304001, 92640304002, 92640304003, 92640304004
Matrix:Water
Analyzed
1,1,1,2-Tetrachloroethane ug/L ND 0.50 12/09/22 04:03
1,1,1-Trichloroethane ug/L ND 0.50 12/09/22 04:03
1,1,2,2-Tetrachloroethane ug/L ND 0.50 12/09/22 04:03
1,1,2-Trichloroethane ug/L ND 0.50 12/09/22 04:03
1,1-Dichloroethane ug/L ND 0.50 12/09/22 04:03
1,1-Dichloroethene ug/L ND 0.50 12/09/22 04:03
1,1-Dichloropropene ug/L ND 0.50 12/09/22 04:03
1,2,3-Trichlorobenzene ug/L ND 2.0 12/09/22 04:03
1,2,3-Trichloropropane ug/L ND 0.50 12/09/22 04:03
1,2,4-Trichlorobenzene ug/L ND 2.0 12/09/22 04:03
1,2,4-Trimethylbenzene ug/L ND 0.50 12/09/22 04:03
1,2-Dibromo-3-chloropropane ug/L ND 1.0 12/09/22 04:03
1,2-Dibromoethane (EDB)ug/L ND 0.50 12/09/22 04:03
1,2-Dichlorobenzene ug/L ND 0.50 12/09/22 04:03
1,2-Dichloroethane ug/L ND 0.50 12/09/22 04:03
1,2-Dichloropropane ug/L ND 0.50 12/09/22 04:03
1,3,5-Trimethylbenzene ug/L ND 0.50 12/09/22 04:03
1,3-Dichlorobenzene ug/L ND 0.50 12/09/22 04:03
1,3-Dichloropropane ug/L ND 0.50 12/09/22 04:03
1,4-Dichlorobenzene ug/L ND 0.50 12/09/22 04:03
2,2-Dichloropropane ug/L ND 0.50 12/09/22 04:03
2-Chlorotoluene ug/L ND 0.50 12/09/22 04:03
4-Chlorotoluene ug/L ND 0.50 12/09/22 04:03
Benzene ug/L ND 0.50 12/09/22 04:03
Bromobenzene ug/L ND 0.50 12/09/22 04:03
Bromochloromethane ug/L ND 0.50 12/09/22 04:03
Bromodichloromethane ug/L ND 0.50 12/09/22 04:03
Bromoform ug/L ND 0.50 12/09/22 04:03
Bromomethane ug/L ND 5.0 12/09/22 04:03
Carbon tetrachloride ug/L ND 0.50 12/09/22 04:03
Chlorobenzene ug/L ND 0.50 12/09/22 04:03
Chloroethane ug/L ND 1.0 12/09/22 04:03
Chloroform ug/L ND 0.50 12/09/22 04:03
Chloromethane ug/L ND 1.0 12/09/22 04:03
cis-1,2-Dichloroethene ug/L ND 0.50 12/09/22 04:03
cis-1,3-Dichloropropene ug/L ND 0.50 12/09/22 04:03
Dibromochloromethane ug/L ND 0.50 12/09/22 04:03
Dibromomethane ug/L ND 0.50 12/09/22 04:03
Dichlorodifluoromethane ug/L ND 0.50 12/09/22 04:03
Diisopropyl ether ug/L ND 0.50 12/09/22 04:03
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 12/12/2022 05:14 PM
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Page 16 of 25
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92640304
MSS 500 Gal UST
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
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK:3860747
Associated Lab Samples:92640304001, 92640304002, 92640304003, 92640304004
Matrix:Water
Analyzed
Ethanol ug/L ND 200 12/09/22 04:03
Ethyl-tert-butyl ether ug/L ND 10.0 12/09/22 04:03
Ethylbenzene ug/L ND 0.50 12/09/22 04:03
Hexachloro-1,3-butadiene ug/L ND 2.0 12/09/22 04:03
Isopropylbenzene (Cumene)ug/L ND 0.50 12/09/22 04:03
m&p-Xylene ug/L ND 1.0 12/09/22 04:03
Methyl-tert-butyl ether ug/L ND 0.50 12/09/22 04:03
Methylene Chloride ug/L ND 2.0 12/09/22 04:03
n-Butylbenzene ug/L ND 0.50 12/09/22 04:03
n-Propylbenzene ug/L ND 0.50 12/09/22 04:03
Naphthalene ug/L ND 2.0 12/09/22 04:03
o-Xylene ug/L ND 0.50 12/09/22 04:03
sec-Butylbenzene ug/L ND 0.50 12/09/22 04:03
Styrene ug/L ND 0.50 12/09/22 04:03
tert-Amyl Alcohol ug/L ND 100 12/09/22 04:03
tert-Amylmethyl ether ug/L ND 10.0 12/09/22 04:03
tert-Butyl Alcohol ug/L ND 50.0 12/09/22 04:03
tert-Butyl Formate ug/L ND 50.0 12/09/22 04:03
tert-Butylbenzene ug/L ND 0.50 12/09/22 04:03
Tetrachloroethene ug/L ND 0.50 12/09/22 04:03
Toluene ug/L ND 0.50 12/09/22 04:03
trans-1,2-Dichloroethene ug/L ND 0.50 12/09/22 04:03
trans-1,3-Dichloropropene ug/L ND 0.50 12/09/22 04:03
Trichloroethene ug/L ND 0.50 12/09/22 04:03
Trichlorofluoromethane ug/L ND 1.0 12/09/22 04:03
Vinyl chloride ug/L ND 1.0 12/09/22 04:03
1,2-Dichloroethane-d4 (S)%94 70-130 12/09/22 04:03
4-Bromofluorobenzene (S)%97 70-130 12/09/22 04:03
Toluene-d8 (S)%101 70-130 12/09/22 04:03
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
3860748LABORATORY CONTROL SAMPLE:
LCSSpike
1,1,1,2-Tetrachloroethane ug/L 53.850 108 60-140
1,1,1-Trichloroethane ug/L 54.150 108 60-140
1,1,2,2-Tetrachloroethane ug/L 51.450 103 60-140
1,1,2-Trichloroethane ug/L 54.850 110 60-140
1,1-Dichloroethane ug/L 48.850 98 60-140
1,1-Dichloroethene ug/L 55.450 111 60-140
1,1-Dichloropropene ug/L 56.750 113 60-140
1,2,3-Trichlorobenzene ug/L 54.150 108 60-140
1,2,3-Trichloropropane ug/L 51.350 103 60-140
1,2,4-Trichlorobenzene ug/L 54.350 109 60-140
1,2,4-Trimethylbenzene ug/L 50.550 101 60-140
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 12/12/2022 05:14 PM
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Page 17 of 25
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92640304
MSS 500 Gal UST
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
LCS
Result
% Rec
Limits Qualifiers% RecConc.
3860748LABORATORY CONTROL SAMPLE:
LCSSpike
1,2-Dibromo-3-chloropropane ug/L 50.050 100 60-140
1,2-Dibromoethane (EDB)ug/L 51.950 104 60-140
1,2-Dichlorobenzene ug/L 52.050 104 60-140
1,2-Dichloroethane ug/L 50.650 101 60-140
1,2-Dichloropropane ug/L 52.350 105 60-140
1,3,5-Trimethylbenzene ug/L 51.550 103 60-140
1,3-Dichlorobenzene ug/L 52.450 105 60-140
1,3-Dichloropropane ug/L 51.550 103 60-140
1,4-Dichlorobenzene ug/L 51.150 102 60-140
2,2-Dichloropropane ug/L 46.350 93 60-140
2-Chlorotoluene ug/L 50.950 102 60-140
4-Chlorotoluene ug/L 50.450 101 60-140
Benzene ug/L 50.650 101 60-140
Bromobenzene ug/L 51.850 104 60-140
Bromochloromethane ug/L 51.850 104 60-140
Bromodichloromethane ug/L 51.050 102 60-140
Bromoform ug/L 54.750 109 60-140
Bromomethane ug/L 48.750 97 60-140
Carbon tetrachloride ug/L 55.550 111 60-140
Chlorobenzene ug/L 52.550 105 60-140
Chloroethane ug/L 41.050 82 60-140
Chloroform ug/L 51.450 103 60-140
Chloromethane ug/L 50.150 100 60-140
cis-1,2-Dichloroethene ug/L 49.850 100 60-140
cis-1,3-Dichloropropene ug/L 52.850 106 60-140
Dibromochloromethane ug/L 51.350 103 60-140
Dibromomethane ug/L 55.150 110 60-140
Dichlorodifluoromethane ug/L 65.050 130 60-140
Diisopropyl ether ug/L 46.650 93 60-140
Ethanol ug/L 18002000 90 60-140
Ethyl-tert-butyl ether ug/L 97.0100 97 60-140
Ethylbenzene ug/L 52.250 104 60-140
Hexachloro-1,3-butadiene ug/L 55.650 111 60-140
Isopropylbenzene (Cumene)ug/L 50.850 102 60-140
m&p-Xylene ug/L 105100 105 60-140
Methyl-tert-butyl ether ug/L 48.150 96 60-140
Methylene Chloride ug/L 48.550 97 60-140
n-Butylbenzene ug/L 53.350 107 60-140
n-Propylbenzene ug/L 51.050 102 60-140
Naphthalene ug/L 53.650 107 60-140
o-Xylene ug/L 51.750 103 60-140
sec-Butylbenzene ug/L 50.250 100 60-140
Styrene ug/L 52.050 104 60-140
tert-Amyl Alcohol ug/L 10501000 105 60-140
tert-Amylmethyl ether ug/L 109100 109 60-140
tert-Butyl Alcohol ug/L 490500 98 60-140
tert-Butyl Formate ug/L 408400 102 60-140
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 12/12/2022 05:14 PM
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[phone]
Page 18 of 25
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92640304
MSS 500 Gal UST
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
LCS
Result
% Rec
Limits Qualifiers% RecConc.
3860748LABORATORY CONTROL SAMPLE:
LCSSpike
tert-Butylbenzene ug/L 42.350 85 60-140
Tetrachloroethene ug/L 50.050 100 60-140
Toluene ug/L 52.550 105 60-140
trans-1,2-Dichloroethene ug/L 52.750 105 60-140
trans-1,3-Dichloropropene ug/L 52.250 104 60-140
Trichloroethene ug/L 57.050 114 60-140
Trichlorofluoromethane ug/L 54.050 108 60-140
Vinyl chloride ug/L 54.550 109 60-140
1,2-Dichloroethane-d4 (S)%102 70-130
4-Bromofluorobenzene (S)%99 70-130
Toluene-d8 (S)%98 70-130
Parameter Units
MS
Result
% Rec
Limits Qual% RecConc.
3860749MATRIX SPIKE & MATRIX SPIKE DUPLICATE:
MSSpike
Result
92639659004
3860750
MSD
Result
MSD
% Rec RPD RPD
Max
MSDMS
Spike
Conc.
1,1,1,2-Tetrachloroethane ug/L M12012160-140141 15 3020ND24.3 28.3
1,1,1-Trichloroethane ug/L M12012560-140146 15 3020ND25.1 29.1
1,1,2,2-Tetrachloroethane ug/L 20 113 60-140131 15 3020ND22.6 26.3
1,1,2-Trichloroethane ug/L 20 119 60-140139 16 3020ND23.7 27.7
1,1-Dichloroethane ug/L 20 110 60-140128 14 3020ND22.1 25.6
1,1-Dichloroethene ug/L M12013160-140150 14 3020ND26.1 30.1
1,1-Dichloropropene ug/L M12013260-140153 15 3020ND26.4 30.7
1,2,3-Trichlorobenzene ug/L M12014060-140150 7 3020ND28.0 29.9
1,2,3-Trichloropropane ug/L 20 112 60-140130 15 3020ND22.4 26.0
1,2,4-Trichlorobenzene ug/L M12013560-140148 10 3020ND26.9 29.6
1,2,4-Trimethylbenzene ug/L 20 119 60-140137 14 3020ND23.8 27.3
1,2-Dibromo-3-
chloropropane ug/L 20 112 60-140129 14 3020ND22.4 25.7
1,2-Dibromoethane (EDB)ug/L 20 114 60-140132 15 3020ND22.8 26.5
1,2-Dichlorobenzene ug/L 20 122 60-140139 13 3020ND24.3 27.8
1,2-Dichloroethane ug/L 20 113 60-140132 16 3020ND22.6 26.4
1,2-Dichloropropane ug/L 20 116 60-140134 15 3020ND23.2 26.9
1,3,5-Trimethylbenzene ug/L 20 121 60-140140 14 3020ND24.3 28.0
1,3-Dichlorobenzene ug/L M12012560-140142 13 3020ND25.0 28.4
1,3-Dichloropropane ug/L 20 114 60-140133 15 3020ND22.7 26.5
1,4-Dichlorobenzene ug/L 20 120 60-140139 14 3020ND24.1 27.7
2,2-Dichloropropane ug/L M12012660-140145 14 3020ND25.2 29.0
2-Chlorotoluene ug/L 20 120 60-140138 14 3020ND24.0 27.5
4-Chlorotoluene ug/L 20 120 60-140138 13 3020ND24.0 27.5
Benzene ug/L 20 115 60-140134 15 3020ND23.1 26.7
Bromobenzene ug/L 20 119 60-140139 15 3020ND23.8 27.8
Bromochloromethane ug/L 20 115 60-140132 13 3020ND23.1 26.4
Bromodichloromethane ug/L 20 113 60-140131 15 3020ND22.5 26.2
Bromoform ug/L 20 114 60-140135 17 3020ND22.8 27.1
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 12/12/2022 05:14 PM
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Page 19 of 25
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92640304
MSS 500 Gal UST
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.
3860749MATRIX SPIKE & MATRIX SPIKE DUPLICATE:
MSSpike
Result
92639659004
3860750
MSD
Result
MSD
% Rec RPD RPD
Max
MSDMS
Spike
Conc.
Bromomethane ug/L M12013560-140152 12 3020ND27.0 30.3
Carbon tetrachloride ug/L M12013060-140152 15 3020ND26.0 30.4
Chlorobenzene ug/L M12012260-140141 15 3020ND24.3 28.1
Chloroethane ug/L M12012560-140141 12 3020ND25.0 28.2
Chloroform ug/L 20 114 60-140133 15 3020ND22.9 26.6
Chloromethane ug/L 20 119 60-140138 15 3020ND24.2 28.0
cis-1,2-Dichloroethene ug/L 20 112 60-140128 14 3020ND22.4 25.6
cis-1,3-Dichloropropene ug/L 20 117 60-140136 15 3020ND23.5 27.3
Dibromochloromethane ug/L 20 112 60-140132 16 3020ND22.4 26.3
Dibromomethane ug/L M12012260-140142 15 3020ND24.4 28.3
Dichlorodifluoromethane ug/L M12015160-140173 14 3020ND30.2 34.6
Diisopropyl ether ug/L 20 100 60-140117 16 3020ND20.0 23.4
Ethanol ug/L 800 98 60-140111 12 30800ND785886
Ethyl-tert-butyl ether ug/L 40 103 60-140121 16 3040ND41.3 48.5
Ethylbenzene ug/L M12012460-140143 14 3020ND24.7 28.6
Hexachloro-1,3-butadiene ug/L M12015160-140166 9 3020ND30.3 33.2
Isopropylbenzene
(Cumene)ug/L 20 120 60-140138 14 3020ND24.0 27.6
m&p-Xylene ug/L M14012560-140143 13 3040ND50.0 57.1
Methyl-tert-butyl ether ug/L 20 101 60-140118 16 3020ND20.1 23.6
Methylene Chloride ug/L 20 107 60-140124 15 3020ND21.3 24.8
n-Butylbenzene ug/L M12013660-140152 11 3020ND27.1 30.3
n-Propylbenzene ug/L M12012460-140141 13 3020ND24.7 28.2
Naphthalene ug/L M12013360-140142 7 3020ND26.6 28.5
o-Xylene ug/L 20 119 60-140138 14 3020ND23.9 27.6
sec-Butylbenzene ug/L M12012560-140142 12 3020ND25.0 28.3
Styrene ug/L 20 119 60-140137 14 3020ND23.8 27.4
tert-Amyl Alcohol ug/L 400 104 60-140131 23 30400ND416524
tert-Amylmethyl ether ug/L 40 117 60-140139 18 3040ND46.6 55.6
tert-Butyl Alcohol ug/L M120013460-140168 23 30200ND267337
tert-Butyl Formate ug/L M11603460-14031 30160ND54.8 49.2J
tert-Butylbenzene ug/L 20 102 60-140118 14 3020ND20.4 23.5
Tetrachloroethene ug/L 20 119 60-140140 16 3020ND23.9 28.0
Toluene ug/L 20 121 60-140140 15 3020ND24.2 28.1
trans-1,2-Dichloroethene ug/L 20 121 60-140139 13 3020ND24.3 27.7
trans-1,3-Dichloropropene ug/L 20 114 60-140135 16 3020ND22.9 27.0
Trichloroethene ug/L M12013260-140153 15 3020ND26.4 30.6
Trichlorofluoromethane ug/L M12013860-140161 15 3020ND27.5 32.1
Vinyl chloride ug/L M12012760-140146 14 3020ND25.5 29.3
1,2-Dichloroethane-d4 (S)%94 70-13095
4-Bromofluorobenzene (S)%97 70-13096
Toluene-d8 (S)%97 70-13097
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 12/12/2022 05:14 PM
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Huntersville, NC 28078
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Page 20 of 25
#=QL#
QUALIFIERS
Pace Project No.:
Project:
92640304
MSS 500 Gal UST
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.
TNTC - Too Numerous To Count
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 - The lowest concentration value that meets project requirements for quantitative data with known precision and
bias for a specific analyte in a specific matrix.
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.
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.
Reported results are not rounded until the final step prior to reporting. Therefore, calculated parameters that are typically reported as
"Total" may vary slightly from the sum of the reported component parameters.
Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes.
TNI - The NELAC Institute.
ANALYTE QUALIFIERS
Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.M1
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 12/12/2022 05:14 PM
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Page 21 of 25
#=CR#
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Pace Project No.:
Project:
92640304
MSS 500 Gal UST
Lab ID Sample ID QC Batch Method QC Batch Analytical Method
Analytical
Batch
92640304001 742126FD-01-WQ-20221206 SM 6200B
92640304002 742126MW-01-WQ-20221206 SM 6200B
92640304003 742126MW-02-WQ-20221206 SM 6200B
92640304004 742126MW-03-WQ-20221206 SM 6200B
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 12/12/2022 05:14 PM
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Page 22 of 25
Page 23 of 25
Page 24 of 25
Page 25 of 25

The business of sustainability

ATTACHMENT C HISTORICAL GROUNDWATER ANALYTICAL RESULTS

Attachment C. Historical Groundwater Field and Analytical Results
Marshall Steam Station
Sherrills Ford, NC
2017/06/20 2017/12/12 2018/03/07 2018/04/17 2018/06/14 2018/08/02 2018/10/16 2019/10/01 2020/04/02 2020/04/02 (FD)2020/10/02 2020/10/02 (FD)2021/01/27 2021/01/27 (FD)2021/07/29
Parameters
2L
Standard 10xSWQS GCL
Dissolved Oxygen (mg/L) NE NE NE 0.25 0.18 NA 0.23 0.36 0.32 0.29 0.22 0.88 NA 0.16 NA 0.32 NA 0.13
Oxidation Reduction Potential (mV) NE NE NE 93.2 -143.2 NA -159.4 2.2 -72.8 -122.8 -148 -97.2 NA -31.6 NA -137 NA -229.8
pH (SU)8.5 NE NE 5.46 5.52 6.12 6.16 5.53 5.65 5.46 5.83 5.74 NA 5.75 NA 5.91 NA 6.05
Specific Conductivity (uS/cm) NE NE NE 262 298.7 NA 323.9 282 337 245.4 353 338 NA 313 NA 311 NA 400.7
Temperature (°C) NE NE NE 20 18.2 18.2 17.9 21 22.8 23 22.4 19.7 NA 21.9 NA 19.1 NA 24.7
Turbidity (NTU) NE NE NE 38.4 10.41 NA 5.83 10.38 2.32 0.4 3.92 3.4 NA 2.51 NA 3.7 NA 2.74
Amyl Alcohol, tert- NE NE 40,000 NA NA NA NA NA NA NA NA NA NA 16,300 14,900 15,500 16,400 NA
Benzene 1 11.9 5,000 17,100 9,960 8,820 13,300 12,200 14,400 13,800 16,100 12,300 M1 16,000 16,800 M1 16,100 11,000 M1 14,500 16,700
tert-Butyl alcohol 10 NE 10,000 NA NA NA NA NA NA NA NA NA NA < 2,500 < 2,500 < 2,000 < 2,500 NA
1,3-Dichlorobenzene 200 100 61,500 < 62.5 < 25.0 < 25.0 < 50.0 < 50.0 < 62.5 < 50.0 < 50.0 < 62.5 < 62.5 < 62.5 < 62.5 < 50.0 < 62.5 < 100
1,1-Dichloroethane 6 NE 6,000 < 62.5 < 25.0 < 25.0 < 50.0 < 50.0 < 62.5 < 50.0 < 50.0 < 62.5 < 62.5 < 62.5 < 62.5 < 50.0 < 62.5 < 100
1,2-Dichloroethane 0.4 99 400 69.0 75.7 61.9 77.6 55.9 70.2 57.3 78.7 < 62.5 66.2 < 62.5 < 62.5 < 50.0 < 62.5 < 100
1,1-Dichloroethene 350 3,000 350,000 < 62.5 < 25.0 < 25.0 < 50.0 < 50.0 < 62.5 < 50.0 < 50.0 < 62.5 < 62.5 < 62.5 < 62.5 < 50.0 < 62.5 < 100
cis-1,2-Dichloroethene 70 NE 70,000 < 62.5 < 25.0 < 25.0 < 50.0 < 50.0 < 62.5 < 50.0 < 50.0 < 62.5 < 62.5 < 62.5 < 62.5 < 50.0 < 62.5 < 100
trans-1,2-Dichloroethene 100 1,000 100,000 < 62.5 < 25.0 < 25.0 < 50.0 < 50.0 < 62.5 < 50.0 < 50.0 < 62.5 < 62.5 < 62.5 < 62.5 < 50.0 < 62.5 < 100
Ethylbenzene 600 680 80,000 1,650 658 516 838 818 594 986 532 986 1,210 1,680 1,630 897 1,200 795
Ethylene dibromide 0.02 NE 50 < 62.5 < 25.0 < 25.0 < 50.0 < 50.0 < 62.5 < 50.0 < 50.0 < 62.5 < 62.5 < 62.5 < 62.5 < 50.0 < 62.5 < 100
Isopropyl ether 70 200,000 70,000 3,360 4,100 3,930 3,290 2,760 3,820 2,760 3,910 2,650 3,340 2,250 2,040 2,330 2,810 4,250
Isopropylbenzene (Cumene) 70 2,500 30,500 < 62.5 45.0 42.2 < 50.0 < 50.0 < 62.5 < 50.0 < 50.0 < 62.5 < 62.5 < 62.5 < 62.5 < 50.0 < 62.5 NA
Methylene chloride 5 200 400,000 < 250 < 100 < 100 < 200 < 200 < 250 < 200 < 200 < 250 < 250 < 250 < 250 < 200 < 250 < 500 v1
Methyl tert-butyl ether 20 190 20,000 1,330 2,180 2,080 1,520 997 1,800 1,210 1,690 1,020 1,210 480 411 783 877 1,680
Naphthalene 6 120 6,000 277 138 114 < 200 < 200 < 250 315 < 200 585 399 526 459 326 402 251
n-Propylbenzene 70 800 26,100 < 62.5 < 25.0 < 25.0 68.3 58.1 < 62.5 < 50.0 < 50.0 < 62.5 < 62.5 < 62.5 < 62.5 < 50.0 < 62.5 NA
Styrene 70 NE 70,000 86.8 34.2 < 25.0 < 50.0 < 50.0 < 62.5 53.9 < 50.0 < 62.5 < 62.5 127 120 < 50.0 < 62.5 < 100
Toluene 600 110 260,000 15,000 3,570 1,910 6,910 10,400 4,930 8,920 2,110 8,940 11,700 21,000 M1 19,700 7,030 9,530 4,940
Trichloroethene 3 25 3,000 < 62.5 < 25.0 < 25.0 < 50.0 < 50.0 < 62.5 < 50.0 < 50.0 < 62.5 < 62.5 < 62.5 < 62.5 < 50.0 < 62.5 < 100
1,2,4-Trimethylbenzene 400 3,900 28,500 1,010 334 172 263 303 214 519 136 714 715 883 797 560 649 NA
1,3,5-Trimethylbenzene 400 6,300 24,100 < 62.5 < 25.0 < 25.0 83.7 110 < 62.5 < 50.0 < 50.0 < 62.5 < 62.5 < 62.5 < 62.5 < 50.0 < 62.5 NA
Vinyl chloride 0.03 0.25 30 < 125 < 50.0 < 50.0 < 100 < 100 < 125 < 100 < 100 < 125 < 125 < 125 < 125 < 100 < 125 < 100
o-Xylene 500 6,000 50,000 3,170 936 639 1,190 1,300 866 1,200 456 1,290 1,500 2,340 2,160 1,020 1,390 803
m,p-Xylenes 500 NE 50,000 5,680 1,720 987 1,940 2,040 1,510 2,730 604 2,770 3,450 5,240 4,930 2,320 3,130 1,680
Xylene, Total 500 NE 50,000 NA NA NA NA NA NA NA NA NA NA NA NA NA NA 2,480
C5-C8-Aliphatics 400 1,250 NE 72,600 N2 28,900 N2 18,900 N2 47,200 N2 64,800 N2 46,000 N2 46,600 N2 NA NA NA NA NA NA NA NA
C9-C12 Aliphatics, Adjusted 700 NE NE NA NA NA NA NA 9,410 N2 8,280 N2 NA NA NA NA NA NA NA NA
C9-C12-Aliphatics 700 1,800 NE 14,000 N2 2,770 N2 < 2,500 N2 9,590 N2 11,700 N2 11,500 N2 11,000 N2 NA NA NA NA NA NA NA NA
C9-C10-Aromatics 200 NE NE < 12,500 N2 < 2,500 N2 < 2,500 N2 < 6,250 N2 < 6,250 N2 < 2,500 N2 2,770 N2 NA NA NA NA NA NA NA NA
Notes on Final Page
Volatile Organic Compounds, ug/L
Volatile Petroleum Hydrocarbons by MADEP Method, ug/L
Sample Identification
Date Collected
MW-01 MW-01
Field Parameters
Project Number 0581051 1 of 5
EQuIS Facility Code
DUKE-MSS
Attachment C. Historical Groundwater Field and Analytical Results
Marshall Steam Station
Sherrills Ford, NC
Parameters
2L
Standard 10xSWQS GCL
Dissolved Oxygen (mg/L) NE NE NE
Oxidation Reduction Potential (mV) NE NE NE
pH (SU)8.5 NE NE
Specific Conductivity (uS/cm) NE NE NE
Temperature (°C) NE NE NE
Turbidity (NTU) NE NE NE
Amyl Alcohol, tert- NE NE 40,000
Benzene 1 11.9 5,000
tert-Butyl alcohol 10 NE 10,000
1,3-Dichlorobenzene 200 100 61,500
1,1-Dichloroethane 6 NE 6,000
1,2-Dichloroethane 0.4 99 400
1,1-Dichloroethene 350 3,000 350,000
cis-1,2-Dichloroethene 70 NE 70,000
trans-1,2-Dichloroethene 100 1,000 100,000
Ethylbenzene 600 680 80,000
Ethylene dibromide 0.02 NE 50
Isopropyl ether 70 200,000 70,000
Isopropylbenzene (Cumene) 70 2,500 30,500
Methylene chloride 5 200 400,000
Methyl tert-butyl ether 20 190 20,000
Naphthalene 6 120 6,000
n-Propylbenzene 70 800 26,100
Styrene 70 NE 70,000
Toluene 600 110 260,000
Trichloroethene 3 25 3,000
1,2,4-Trimethylbenzene 400 3,900 28,500
1,3,5-Trimethylbenzene 400 6,300 24,100
Vinyl chloride 0.03 0.25 30
o-Xylene 500 6,000 50,000
m,p-Xylenes 500 NE 50,000
Xylene, Total 500 NE 50,000
C5-C8-Aliphatics 400 1,250 NE
C9-C12 Aliphatics, Adjusted 700 NE NE
C9-C12-Aliphatics 700 1,800 NE
C9-C10-Aromatics 200 NE NE
Notes on Final Page
Volatile Organic Compounds, ug/L
Volatile Petroleum Hydrocarbons by MADEP Method, ug/L
Sample Identification
Date Collected
Field Parameters
MW-01 MW-01D
2021/07/29 (FD)2021/09/30 2021/10/14 2021/10/14 (FD)2022/04/06 2022/04/06 (FD)2022/12/06 2022/12/06 (FD)2018/04/17 2018/06/14 2018/08/02 2018/10/16 2021/01/27 2021/07/29 2021/09/30 2021/10/14
NA NA 0.27 NA 0.16 NA 0.17 NA 0.23 0.3 0.29 0.23 0.57 1.17 NA 0.53
NA NA -80.5 NA -153 NA -113 NA -219 -112 -90.3 -123.3 -76 -123.3 NA 104.7
NA NA 5.98 NA 5.96 NA 6.1 NA 6.37 6.57 6.09 6.04 6.04 6.02 NA 4.89
NA NA 365.5 NA 392 NA 400 NA 458 517.9 518.1 526 450 477.5 NA 348.7
NA NA 23.9 NA 19.2 NA 19.2 NA 18.1 22.6 22.9 22 18.2 23.1 NA 21.9
NA NA NA NA 7.68 NA 1.95 NA 3.58 11.27 4.37 1.03 8.07 8.7 NA NA
NA NA 25,200 M1 24,100 NA NA 22,300 22,100 NA NA NA NA < 100 NA NA < 100
14,100 1,440 H1 7,370 7,650 9,130 9,460 8,280 8,590 75.3 23.4 19.1 9.8 < 0.50 < 1.0 < 1.00 H1 < 0.50
NA NA < 2,500 M1 < 2,500 NA NA < 2,500 < 2,500 NA NA NA NA < 20.0 NA NA < 50.0
< 100 < 1.00 < 25.0 < 25.0 < 25.0 < 25.0 < 25.0 < 25.0 < 0.50 < 0.50 < 0.50 0.87 < 0.50 < 1.0 < 1.00 < 0.50
< 100 < 1.00 < 25.0 < 25.0 < 25.0 < 25.0 < 25.0 < 25.0 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 1.00 < 0.50
< 100 15.7 41.6 43.6 52.5 58.8 42.4 44.5 2.8 1.4 1.0 0.63 < 0.50 < 1.0 < 1.00 < 0.50
< 100 < 1.00 < 25.0 < 25.0 < 25.0 < 25.0 < 25.0 < 25.0 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 1.00 < 0.50
< 100 < 1.00 < 25.0 < 25.0 < 25.0 < 25.0 < 25.0 < 25.0 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 1.00 < 0.50
< 100 < 1.00 < 25.0 < 25.0 < 25.0 < 25.0 < 25.0 < 25.0 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 1.00 < 0.50
724 122 206 261 608 632 452 473 3.0 1.1 < 0.50 < 0.50 < 0.50 < 1.0 < 1.00 H1 < 0.50
< 100 1.26 < 25.0 < 25.0 < 25.0 < 25.0 < 25.0 < 25.0 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 1.00 < 0.50
3,560 685 H1 2,270 M1 2,250 2,860 2,850 2,390 2,460 155 90.7 68.1 36.3 1.2 < 1.0 < 1.00 H1 < 0.50
NA 2.84 < 25.0 < 25.0 28.3 26.4 29.7 31.0 0.93 < 0.50 < 0.50 < 0.50 < 0.50 NA < 1.00 < 0.50
< 500 < 5.00 < 100 < 100 < 100 < 100 < 100 < 100 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 5.0 < 5.00 < 2.0
1,340 527 H1 1,110 M1 1,050 1,220 1,190 945 971 160 83.4 65.2 40.6 2.6 1.1 < 1.00 H1 < 0.50
256 28.9 < 100 < 100 127 140 165 159 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 1.0 < 5.00 H1 < 2.0
NA 2.54 < 25.0 < 25.0 33.8 35.8 32.0 33.7 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 NA < 1.00 < 0.50
< 100 8.51 < 25.0 < 25.0 < 25.0 < 25.0 < 25.0 < 25.0 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 1.00 < 0.50
4,550 913 H1 961 1,030 3,530 3,850 2,540 2,590 7.7 1.5 < 0.50 < 0.50 < 0.50 < 1.0 4.07 H1 < 0.50
< 100 < 1.00 < 25.0 < 25.0 < 25.0 < 25.0 < 25.0 < 25.0 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 1.00 < 0.50
NA < 1.00 49.0 59.6 232 262 200 207 2.8 1.0 < 0.50 < 0.50 < 0.50 NA < 1.00 < 0.50
NA 16.9 < 25.0 < 25.0 67.0 59.4 44.2 46.9 0.62 < 0.50 < 0.50 < 0.50 < 0.50 NA < 1.00 H1 < 0.50
< 100 < 1.00 < 50.0 < 50.0 < 50.0 < 50.0 < 50.0 < 50.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.00 < 1.0
816 268 H1 185 223 786 813 491 508 7.4 2.3 0.68 0.74 < 0.50 < 1.0 < 1.00 H1 < 0.50
1,550 21.2 301 383 1,170 1,200 923 949 4.8 1.9 < 1.0 < 1.0 < 1.0 < 2.0 < 2.00 H1 < 1.0
2,360 NA NA NA NA NA NA NA NA NA NA NA NA < 1.0 NA NA
NA NA NA NA NA NA NA NA 586 N2 321 N2 180 N2 110 N2 NA NA NA NA
NA NA NA NA NA NA NA NA NA NA < 50.0 N2 < 50.0 N2 NA NA NA NA
NA NA NA NA NA NA NA NA < 50.0 N2 < 50.0 N2 < 50.0 N2 < 50.0 N2 NA NA NA NA
NA NA NA NA NA NA NA NA < 50.0 N2 < 50.0 N2 < 50.0 N2 < 50.0 N2 NA NA NA NA
MW-01 MW-01D
Project Number 0581051 2 of 5
EQuIS Facility Code
DUKE-MSS
Attachment C. Historical Groundwater Field and Analytical Results
Marshall Steam Station
Sherrills Ford, NC
Parameters
2L
Standard 10xSWQS GCL
Dissolved Oxygen (mg/L) NE NE NE
Oxidation Reduction Potential (mV) NE NE NE
pH (SU)8.5 NE NE
Specific Conductivity (uS/cm) NE NE NE
Temperature (°C) NE NE NE
Turbidity (NTU) NE NE NE
Amyl Alcohol, tert- NE NE 40,000
Benzene 1 11.9 5,000
tert-Butyl alcohol 10 NE 10,000
1,3-Dichlorobenzene 200 100 61,500
1,1-Dichloroethane 6 NE 6,000
1,2-Dichloroethane 0.4 99 400
1,1-Dichloroethene 350 3,000 350,000
cis-1,2-Dichloroethene 70 NE 70,000
trans-1,2-Dichloroethene 100 1,000 100,000
Ethylbenzene 600 680 80,000
Ethylene dibromide 0.02 NE 50
Isopropyl ether 70 200,000 70,000
Isopropylbenzene (Cumene) 70 2,500 30,500
Methylene chloride 5 200 400,000
Methyl tert-butyl ether 20 190 20,000
Naphthalene 6 120 6,000
n-Propylbenzene 70 800 26,100
Styrene 70 NE 70,000
Toluene 600 110 260,000
Trichloroethene 3 25 3,000
1,2,4-Trimethylbenzene 400 3,900 28,500
1,3,5-Trimethylbenzene 400 6,300 24,100
Vinyl chloride 0.03 0.25 30
o-Xylene 500 6,000 50,000
m,p-Xylenes 500 NE 50,000
Xylene, Total 500 NE 50,000
C5-C8-Aliphatics 400 1,250 NE
C9-C12 Aliphatics, Adjusted 700 NE NE
C9-C12-Aliphatics 700 1,800 NE
C9-C10-Aromatics 200 NE NE
Notes on Final Page
Volatile Organic Compounds, ug/L
Volatile Petroleum Hydrocarbons by MADEP Method, ug/L
Sample Identification
Date Collected
Field Parameters
2017/12/12 2018/03/07 2018/04/17 2018/06/14 2018/08/02 2018/10/16 2019/10/01 2020/04/02 2020/10/02 2021/01/27 2021/07/29 2021/09/30 2021/10/14 2022/04/06 2022/12/06 2018/04/17 2018/06/14
0.42 NA 1.38 0.45 0.37 0.28 0.49 2.19 0.23 0.36 0.14 NA 0.84 0.26 0.2 3.27 1.51
-134.9 NA 179.6 98.1 99.2 26.7 -61 127 16.5 -50 -36.3 NA 86.5 77.6 63.8 326.9 240
5.39 6.11 5.99 5.75 5.52 5.24 5.52 5.84 5.75 5.84 5.81 NA 5.51 5.71 5.95 5.66 4.51
230 NA 394.7 441.1 409.4 286.2 254 449 406 418 335.3 NA 250.7 383 382.2 180.5 167.1
18.3 17.2 16.5 20 22 21.3 20.3 17.9 19.5 17.3 19.2 NA 20.9 17.4 17.3 16.2 19.9
10.01 NA 31.5 7.07 9.52 2.68 29 28.5 9.34 23 47.4 NA NA 9.3 16.8 5.22 6.36
NA NA NA NA NA NA NA NA < 100 < 100 NA NA 716 NA < 100 NA NA
< 2.5 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 2.5 < 0.50 < 0.50 < 0.50 < 5.0 < 25.0 H1 < 2.5 < 0.50 < 0.50 1.3 < 1.0
NA NA NA NA NA NA NA NA < 20.0 < 20.0 NA NA 273 NA < 50.0 NA NA
< 2.5 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 2.5 < 0.50 < 0.50 < 0.50 < 5.0 < 1.00 < 2.5 < 0.50 < 0.50 < 1.2 < 1.0
< 2.5 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 2.5 < 0.50 < 0.50 < 0.50 < 5.0 < 1.00 < 2.5 < 0.50 < 0.50 < 1.2 < 1.0
< 2.5 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 2.5 < 0.50 < 0.50 < 0.50 < 5.0 < 1.00 < 2.5 < 0.50 < 0.50 2.6 1.1
< 2.5 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 2.5 < 0.50 < 0.50 < 0.50 < 5.0 < 1.00 < 2.5 < 0.50 < 0.50 < 1.2 < 1.0
< 2.5 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 2.5 < 0.50 < 0.50 < 0.50 < 5.0 < 1.00 < 2.5 < 0.50 < 0.50 < 1.2 < 1.0
< 2.5 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 2.5 < 0.50 < 0.50 < 0.50 < 5.0 < 1.00 < 2.5 < 0.50 < 0.50 < 1.2 < 1.0
< 2.5 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 2.5 < 0.50 < 0.50 < 0.50 < 5.0 < 1.00 < 2.5 < 0.50 < 0.50 < 1.2 < 1.0
< 2.5 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 2.5 < 0.50 < 0.50 < 0.50 < 5.0 < 1.00 < 2.5 < 0.50 < 0.50 < 1.2 < 1.0
367 62.1 15.9 7.7 30.3 153 388 13.4 55.6 2.1 503 610 H1 562 107 15.6 363 219
< 2.5 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 2.5 < 0.50 < 0.50 < 0.50 NA < 1.00 < 2.5 < 0.50 < 0.50 < 1.2 < 1.0
< 10.0 < 2.0 < 2.0 < 2.0 M1 < 2.0 4.6 C9 < 10.0 < 2.0 < 2.0 < 2.0 < 25.0 v1 < 5.00 < 10.0 < 2.0 < 2.0 < 5.0 < 4.0
555 98.6 25.4 10.0 44.1 238 476 18.7 80.0 M1 2.7 639 907 H1 793 125 12.5 112 57.0
< 10.0 < 2.0 < 2.0 < 2.0 < 2.0 < 4.0 < 10.0 < 2.0 2.7 < 2.0 < 5.0 < 5.00 < 10.0 < 2.0 < 2.0 < 5.0 < 4.0
< 2.5 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 2.5 < 0.50 < 0.50 < 0.50 NA < 1.00 < 2.5 < 0.50 < 0.50 < 1.2 < 1.0
< 2.5 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 2.5 < 0.50 < 0.50 < 0.50 < 5.0 < 1.00 < 2.5 < 0.50 < 0.50 < 1.2 < 1.0
3.3 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 2.5 < 0.50 < 0.50 < 0.50 < 5.0 < 25.0 H1 < 2.5 < 0.50 < 0.50 < 1.2 < 1.0
< 2.5 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 2.5 < 0.50 < 0.50 < 0.50 < 5.0 < 1.00 < 2.5 < 0.50 < 0.50 < 1.2 < 1.0
< 2.5 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 2.5 < 0.50 1.5 < 0.50 NA < 1.00 < 2.5 < 0.50 < 0.50 < 1.2 < 1.0
< 2.5 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 2.5 < 0.50 < 0.50 < 0.50 NA < 1.00 < 2.5 < 0.50 < 0.50 < 1.2 < 1.0
< 5.0 < 1.0 < 1.0 < 1.0 < 1.0 < 2.0 < 5.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.00 < 5.0 < 1.0 < 1.0 < 2.5 < 2.0
< 2.5 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 2.5 < 0.50 0.61 < 0.50 < 5.0 < 1.00 < 2.5 < 0.50 < 0.50 < 1.2 < 1.0
< 5.0 < 1.0 < 1.0 < 1.0 < 1.0 < 2.0 < 5.0 < 1.0 1.3 < 1.0 < 10.0 < 2.00 < 5.0 < 1.0 < 1.0 < 2.5 < 2.0
NA NA NA NA NA NA NA NA NA NA < 5.0 NA NA NA NA NA NA
799 N2 151 N2 < 50.0 N2 < 50.0 N2 < 50.0 N2 361 N2 NA NA NA NA NA NA NA NA NA 795 N2 495 N2
NA NA NA NA < 50.0 N2 < 50.0 N2 NA NA NA NA NA NA NA NA NA NA NA
< 50.0 N2 < 50.0 N2 < 50.0 N2 < 50.0 N2 < 50.0 N2 < 50.0 N2 NA NA NA NA NA NA NA NA NA < 50.0 N2 < 50.0 N2
< 50.0 N2 < 50.0 N2 < 50.0 N2 < 50.0 N2 < 50.0 N2 < 50.0 N2 NA NA NA NA NA NA NA NA NA < 50.0 N2 < 50.0 N2
MW-02 MW-02
Project Number 0581051 3 of 5
EQuIS Facility Code
DUKE-MSS
Attachment C. Historical Groundwater Field and Analytical Results
Marshall Steam Station
Sherrills Ford, NC
Parameters
2L
Standard 10xSWQS GCL
Dissolved Oxygen (mg/L) NE NE NE
Oxidation Reduction Potential (mV) NE NE NE
pH (SU)8.5 NE NE
Specific Conductivity (uS/cm) NE NE NE
Temperature (°C) NE NE NE
Turbidity (NTU) NE NE NE
Amyl Alcohol, tert- NE NE 40,000
Benzene 1 11.9 5,000
tert-Butyl alcohol 10 NE 10,000
1,3-Dichlorobenzene 200 100 61,500
1,1-Dichloroethane 6 NE 6,000
1,2-Dichloroethane 0.4 99 400
1,1-Dichloroethene 350 3,000 350,000
cis-1,2-Dichloroethene 70 NE 70,000
trans-1,2-Dichloroethene 100 1,000 100,000
Ethylbenzene 600 680 80,000
Ethylene dibromide 0.02 NE 50
Isopropyl ether 70 200,000 70,000
Isopropylbenzene (Cumene) 70 2,500 30,500
Methylene chloride 5 200 400,000
Methyl tert-butyl ether 20 190 20,000
Naphthalene 6 120 6,000
n-Propylbenzene 70 800 26,100
Styrene 70 NE 70,000
Toluene 600 110 260,000
Trichloroethene 3 25 3,000
1,2,4-Trimethylbenzene 400 3,900 28,500
1,3,5-Trimethylbenzene 400 6,300 24,100
Vinyl chloride 0.03 0.25 30
o-Xylene 500 6,000 50,000
m,p-Xylenes 500 NE 50,000
Xylene, Total 500 NE 50,000
C5-C8-Aliphatics 400 1,250 NE
C9-C12 Aliphatics, Adjusted 700 NE NE
C9-C12-Aliphatics 700 1,800 NE
C9-C10-Aromatics 200 NE NE
Notes on Final Page
Volatile Organic Compounds, ug/L
Volatile Petroleum Hydrocarbons by MADEP Method, ug/L
Sample Identification
Date Collected
Field Parameters
DP-01 MW-05
2018/08/02 2018/10/16 2021/01/27 2021/07/29 2022/04/06 2022/12/06 2018/04/17 2018/06/14 2018/08/02 2018/10/16 2021/01/27 2021/07/29 2018/04/18 2018/10/16 2021/01/27 2021/07/29 2018/10/15
0.49 2.3 2.57 0.41 2.86 0.1 0.69 0.39 0.41 0.22 0.22 0.19 NA 0.36 2.88 0.26 1.78
213 260.4 -25 103.8 123.7 248.2 151.2 217 170.8 190.2 -16 121.8 NA 112.4 -1.7 37.7 144.3
4.83 5.02 4.99 5.18 4.84 5.1 6.04 5.16 4.93 4.93 5.32 5.45 NA 5.86 5.85 5.74 5.34
162.7 151.7 140 164.9 185 165.3 229.2 191.3 182.6 182.6 154 164.6 NA 725 309 382.3 1,058
22 22.3 18.3 23.1 19.8 18.3 14.8 18.6 19.7 19.8 17.4 19.1 NA 21.8 16.9 26.4 23.4
2.93 0.41 3.7 5.24 4.4 3.16 8.61 6.83 3.94 2.47 13 17.8 NA 17.7 185 20.4 15.67
NA NA < 100 NA NA < 100 NA NA NA NA < 100 NA NA NA < 100 NA NA
< 0.50 < 0.50 < 0.50 1.4 < 0.50 2.1 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 0.50 < 0.50 < 0.50 < 1.0 < 0.50
NA NA < 20.0 NA NA < 50.0 NA NA NA NA < 20.0 NA NA NA < 20.0 NA NA
< 0.50 1.1 < 0.50 < 1.0 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 0.94 < 0.50 < 1.0 < 0.50 0.77 < 0.50 < 1.0 0.99
< 0.50 < 0.50 < 0.50 < 1.0 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 0.50 < 0.50 < 0.50 < 1.0 < 0.50
0.54 < 0.50 < 0.50 < 1.0 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 0.50 < 0.50 < 0.50 < 1.0 < 0.50
< 0.50 < 0.50 < 0.50 < 1.0 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 0.50 < 0.50 < 0.50 < 1.0 4.4
< 0.50 < 0.50 < 0.50 < 1.0 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 0.50 < 0.50 < 0.50 < 1.0 39.7
< 0.50 < 0.50 < 0.50 < 1.0 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 0.50 < 0.50 < 0.50 < 1.0 10.9
< 0.50 < 0.50 < 0.50 < 1.0 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 0.50 < 0.50 < 0.50 < 1.0 < 0.50
< 0.50 < 0.50 < 0.50 < 1.0 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 0.50 < 0.50 < 0.50 < 1.0 < 0.50
145 M1 33.7 19.9 72.5 17.3 55.8 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 5.6 19.1 18.0 43.6 < 0.50
< 0.50 < 0.50 < 0.50 NA < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 NA < 0.50 < 0.50 < 0.50 NA < 0.50
< 2.0 < 2.0 < 2.0 < 5.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 5.0 < 2.0 < 2.0 < 2.0 < 5.0 < 2.0
30.7 6.9 1.5 9.1 5.5 5.0 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 5.6 24.3 16.8 38.4 < 0.50
< 2.0 < 2.0 < 2.0 < 1.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 1.0 < 2.0 < 2.0 < 2.0 < 1.0 < 2.0
< 0.50 < 0.50 < 0.50 NA < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 NA < 0.50 < 0.50 < 0.50 NA < 0.50
< 0.50 < 0.50 < 0.50 < 1.0 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 0.50 < 0.50 < 0.50 < 1.0 < 0.50
< 0.50 < 0.50 < 0.50 < 1.0 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 0.50 < 0.50 < 0.50 < 1.0 < 0.50
< 0.50 < 0.50 < 0.50 < 1.0 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 0.50 < 0.50 < 0.50 < 1.0 10.9
< 0.50 < 0.50 < 0.50 NA < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 NA < 0.50 < 0.50 < 0.50 NA < 0.50
< 0.50 < 0.50 < 0.50 NA < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 NA < 0.50 < 0.50 < 0.50 NA < 0.50
< 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 3.2
< 0.50 < 0.50 < 0.50 < 1.0 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 1.0 < 0.50 < 0.50 < 0.50 < 1.0 < 0.50
< 1.0 < 1.0 < 1.0 < 2.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 2.0 < 1.0 < 1.0 < 1.0 < 2.0 < 1.0
NA NA NA < 1.0 NA NA NA NA NA NA NA < 1.0 NA NA NA < 1.0 NA
175 N2 < 50.0 N2 NA NA NA NA < 50.0 N2 < 50.0 N2 < 50.0 N2 < 50.0 N2 NA NA < 50.0 N2 < 50.0 N2 NA NA < 50.0 N2
< 50.0 N2 < 50.0 N2 NA NA NA NA NA NA < 50.0 N2 < 50.0 N2 NA NA NA < 50.0 N2 NA NA < 50.0 N2
< 50.0 N2 < 50.0 N2 NA NA NA NA < 50.0 N2 < 50.0 N2 < 50.0 N2 < 50.0 N2 NA NA < 50.0 N2 < 50.0 N2 NA NA < 50.0 N2
< 50.0 N2 < 50.0 N2 NA NA NA NA < 50.0 N2 < 50.0 N2 < 50.0 N2 < 50.0 N2 NA NA < 50.0 N2 < 50.0 N2 NA NA < 50.0 N2
MW-03 MW-04 MW-05
Project Number 0581051 4 of 5
EQuIS Facility Code
DUKE-MSS
Attachment C. Historical Groundwater Field and Analytical Results
Marshall Steam Station
Sherrills Ford, NC
Parameters
2L
Standard 10xSWQS GCL
Dissolved Oxygen (mg/L)NE NE NE
Oxidation Reduction Potential (mV) NE NE NE
pH (SU)8.5 NE NE
Specific Conductivity (uS/cm)NE NE NE
Temperature (°C)NE NE NE
Turbidity (NTU)NE NE NE
Amyl Alcohol, tert-NE NE 40,000
Benzene 1 11.9 5,000
tert-Butyl alcohol 10 NE 10,000
1,3-Dichlorobenzene 200 100 61,500
1,1-Dichloroethane 6 NE 6,000
1,2-Dichloroethane 0.4 99 400
1,1-Dichloroethene 350 3,000 350,000
cis-1,2-Dichloroethene 70 NE 70,000
trans-1,2-Dichloroethene 100 1,000 100,000
Ethylbenzene 600 680 80,000
Ethylene dibromide 0.02 NE 50
Isopropyl ether 70 200,000 70,000
Isopropylbenzene (Cumene)70 2,500 30,500
Methylene chloride 5 200 400,000
Methyl tert-butyl ether 20 190 20,000
Naphthalene 6 120 6,000
n-Propylbenzene 70 800 26,100
Styrene 70 NE 70,000
Toluene 600 110 260,000
Trichloroethene 3 25 3,000
1,2,4-Trimethylbenzene 400 3,900 28,500
1,3,5-Trimethylbenzene 400 6,300 24,100
Vinyl chloride 0.03 0.25 30
o-Xylene 500 6,000 50,000
m,p-Xylenes 500 NE 50,000
Xylene, Total 500 NE 50,000
C5-C8-Aliphatics 400 1,250 NE
C9-C12 Aliphatics, Adjusted 700 NE NE
C9-C12-Aliphatics 700 1,800 NE
C9-C10-Aromatics 200 NE NE
Volatile Organic Compounds, ug/L
Volatile Petroleum Hydrocarbons by MADEP Method, ug/L
Sample Identification
Date Collected
Field Parameters
2021/01/27 2021/07/29 2018/10/16 2021/01/27 2021/07/29
0.42 0.17 0.35 0.39 0.22
308 47.8 -357.9 -91 -103.7
5.25 5.37 6.15 5.96 6.04
110 114.4 479.7 440 480.9
17.5 23 21.9 17.5 23.9
7.23 26 12.36 50 52.4
< 100 NA NA < 100 NA
< 0.50 < 1.0 < 0.50 < 0.50 < 1.0
< 20.0 NA NA < 20.0 NA
< 0.50 < 1.0 0.87 < 0.50 < 1.0
0.52 < 1.0 < 0.50 < 0.50 < 1.0
< 0.50 < 1.0 < 0.50 < 0.50 < 1.0
16.4 15.0 < 0.50 < 0.50 < 1.0
3.1 2.8 < 0.50 1.2 2.0
< 0.50 < 1.0 < 0.50 < 0.50 < 1.0
< 0.50 < 1.0 < 0.50 < 0.50 < 1.0
< 0.50 < 1.0 < 0.50 < 0.50 < 1.0
< 0.50 < 1.0 < 0.50 < 0.50 < 1.0
< 0.50 NA < 0.50 < 0.50 NA
< 2.0 < 5.0 < 2.0 < 2.0 < 5.0
< 0.50 < 1.0 < 0.50 < 0.50 < 1.0
< 2.0 < 1.0 < 2.0 < 2.0 < 1.0
< 0.50 NA < 0.50 < 0.50 NA
< 0.50 < 1.0 < 0.50 < 0.50 < 1.0
< 0.50 < 1.0 < 0.50 < 0.50 < 1.0
< 0.50 < 1.0 < 0.50 0.52 < 1.0
< 0.50 NA < 0.50 < 0.50 NA
< 0.50 NA < 0.50 < 0.50 NA
8.1 13.4 < 1.0 < 1.0 < 1.0
< 0.50 < 1.0 < 0.50 < 0.50 < 1.0
< 1.0 < 2.0 < 1.0 < 1.0 < 2.0
NA < 1.0 NA NA < 1.0
NA NA < 50.0 N2 NA NA
NA NA < 50.0 N2 NA NA
NA NA < 50.0 N2 NA NA
NA NA < 50.0 N2 NA NA
Notes
ug/L - microgram(s) per liter
NC 2L - 15A NCAC 02L .0202 Groundwater Standard
NE - not established
FD - field duplicate sample
< - The constituent concentration was not detected above the laboratory reporting limit specified.
Bold value indicates the analyte is detected above laboratory reporting limit specified.
Blue value indicates that the detected concentration is above NC 2Ls
Gray shading indicates the constituent was detected at a concentration greater than 10 times the SWQS.
Italicized value indicates the constituent was detected at a concentration greater than GCLs.
H1 - Analysis conducted outside the recognized method holding time.
M1 - Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.
10xSWQS - 10 times the lower value of the North Carolina Protective Values for Surface Waters, and
GCL - Gross Contamination Level, from the North Carolina Department of Environmental Quality,
MW-06 MW-07
Project Number 0581051 5 of 5
EQuIS Facility Code
DUKE-MSS

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