Legacy Eno Site Notification form_09212017

Page 1 of 5
North Carolina Department of Environmental Quality
Division of Waste Management
Superfund Section
Inactive Hazardous Sites Branch
NOTIFICATION OF AN INACTIVE HAZARDOUS SUBSTANCE
OR WASTE DISPOSAL SITE
Please read instructions before completing and type or print in black ink.
I.SITE NAME AND LOCATION:
Site Name (one site per form)______________________________________________________________________
Location (street address)__________________________________________________________________________
City_______________________________________ US EPA ID# (if known)________________________________
County________________________________________________________________________________________
Directions to Site________________________________________________________________________________
__________________________________________________________________________________________________________
__________________________________________________________________________________________________________
__________________________________________________________________________________________________________
__________________________________________________________________________________________________________
__________________________________________________________________________________________________________
__________________________________________________________________________________________________________
__________________________________________________________________________________________________________
__________________________________________________________________________________________________________
__________________________________________________________________________________________________________
__________________________________________________________________________________________________________
Attach a USGS topographic map or map of equal or reasonably similar scale (1 inch = 2000 ft.) showing the
location and vicinity of the site or facility. Label map with the site name.
II.PERSON COMPLETING FORM: Present Owner____________
Name__________________________________________________________ Past Owner_______________
Mailing Address_________________________________________________ Present Operator__________
_______________________________________________________________ Past Owner_______________
City____________________________State___________Zip Code_________ Other____________________
Telephone ( ___) _______________________ (specify)__________________
____________________________
III.PRESENT OWNER:
Individual Owner or Company Name_________________________________ Corporation_______________
_______________________________________________________________ Partnership________________
Executive Officer_________________________________________________ Individual_________________
Mailing Address__________________________________________________ Government Unit___________
Telephone( 980 ) _373-9646____________________________________________
Former Eno Steam Station
Pleasant Green Road
Hillsborough
Orange
From Durham, head west on I-85 S; take exit 170 for US-70 W toward NC-86 N; Turn right on
Pleasant Green Road, Site entrance on the left past Substations
Geosyntec Consultants of NC, PC
2501 Blue Ridge Road
Suite 430
Raleigh NC 27607
919 424-1822
Consultant
Duke Energy
Jim Wells
526 S Church Street
_______________________________________________________________ Other_____________________
City__Charlotte___________State___NC_________Zip Code___28202_(specify)___________________
Y
Please see Attachment 1
Page 2 of 5
IV.CURRENT SITE USE:
Check the item or items which describe the current use of the site.
Residential ________ Farm Land ________ Retirement Home ________
Business ________ Farm Land ________ Other ________
Industrial ________ School/Day Care ________ (specify) ________
Pasture Land ________ Hospital ________ ________________________
Residential ________ Farm Land ________ Retirement Home ________
Business ________ Farm Land ________ Other ________
Industrial ________ School/Day Care ________ (specify) ________
Pasture Land ________ Hospital ________ _________________________
VII.Site Operations (More than one may apply):
Current Previous
1.Mining………………………………………………………………..………………………………. ______ ______
2.Paper and wood production……………………………………………………………..….………… ______ ______
3.Textiles………………………………………………………………………………..……………… ______ ______
4.Fertilizer………………………………………………………………………………..…………….. ______ ______
5.Printing/Painting……………………………………………………………………………………… ______ ______
6.Leather tanning……………………………………………………………………………..………… ______ ______
7.Iron/Steel foundry…………………………………………………………………………..…........... ______ ______
8.Chemical, general................................................................................................................................. ______ ______
9.Plating/Polishing…………………………………………………………………………..…………. ______ ______
10.Military/ammunition………………………………………………………………………..………… ______ ______
11.Firing range…………………………………………………………………………………………… ______ ______
12.Rubber/plastics…………………………………………………………………………..………….... ______ ______
13.Utility companies/transformer……………………………………………………………………...… ______ ______
14.Sanitary/refuse……………………………………………………………………………………...… ______ ______
15.Photo finishing………………………………………………………………………..………….…… ______ ______
16.Lab/hospital………………………………………………………………………………………...… ______ ______
17.Wood treating……………………………………………………………………………………….... ______ ______
18.Battery reclamation…………………………………………………………………………………... ______ ______
19.Pesticides formulation, packaging and/or distribution…………………………………………….…..______ ______
20.Herbicide formulation, packaging and/or distribution……………………………………………...... ______ ______
21.Other agricultural formulation, packaging and/or distribution……………………………………..... ______ ______
22.Dry cleaning………………………………………………………………………………………….. ______ ______
23.Petrochemical processing or refining………………………………………………………………… ______ ______
24.Furniture manufacturing or finishing…………………………………………………………............ ______ ______
25.Drum reconditioning………………………………………………………………….……..……….. ______ ______
26.Unknown……………………………………………………………………………………………… ______ ______
27.Other (specify)………………………………………………………………………………………… ______ ______
State park
V.ON-SITE RESIDENTS:
Are there any on-site residents? _____Yes ___X___No
Number of children (<7 years old) living on site_______________Number of adults___________
VI.SURROUNDING PROPERTY USE:
Check the appropriate description of the area surrounding the site (More than one may apply.)
X
X
Eno River State Park
X
Electrical substation
Page 3 of 5
VIII.ENVIRONMENTAL PERMITS:
List all previous and current environmental permits below:
Type of Permit Past Present
____(e.g.landfill, nondischarge, etc.)________ ___(circle one)___ ______Permit Number____ ___Date Issued___ ________Issuing Agency__________
______________________________________ Past Present ______________________ _______________ _______________________________
______________________________________ Past Present ______________________ _______________ ________________________________
______________________________________ Past Present ______________________ _______________ _______________________________
______________________________________ Past Present ______________________ _______________ _______________________________
______________________________________ Past Present ______________________ _______________ _______________________________
______________________________________ Past Present ______________________ _______________ _______________________________
______________________________________ Past Present ______________________ _______________ _______________________________
IX.KNOW OR SUSPECTED RELEASES OF HAZARDOUS SUBSTANCES OR WASTE TO THE ENVIRONMENT:
List all on-site spills, disposals and other releases of hazardous substances or materials containing hazardous substances.
Physical
State of Suspected Source of Release Known or Suspected Contamination
Material/ Material Approx. Contaminants (e.g. tank, buried
Chemical Released (Use codes Volume Date of (Use codes drums, landfill, Ground Surface
(known and suspected) below) Released Release below)_ product spill, etc) water water Sediment Soil
<Enter “K” if Known and “S” if Suspected>
______________________ ____________ _______ _______ __________ ___________________ _______ ______ ______ ______
______________________ ____________ _______ _______ __________ ___________________ _______ ______ ______ ______
______________________ ____________ _______ _______ __________ ___________________ _______ ______ ______ ______
______________________ ____________ _______ _______ __________ ___________________ _______ ______ ______ ______
______________________ ____________ _______ _______ __________ ___________________ _______ ______ ______ ______
_______ _______ __________ ___________________ _______ ______ ______ ______
_______ _______ __________ ___________________ _______ ______ ______ ______
Codes for Suspected Contaminants
A – Acids D – Dioxins P – PCBs
ab – Asbestos M – Metals Pe – Petroleum Products
Am – Ammonia Mu – Mixed Municipal Waste Ps - Pesticides
B – Bases O – Organic Chemicals W – Waste Oil
C – Cyanide
Flood development permit 3/9/2017 Orange County Planning & Inspections Dept
Monitoring well permit W17-00014 1/30/2017 Orange County Health Department
Aluminum, Arsenic, ChromiumCobalt, Iron, Manganese S
S unknown
unknown
unknownunknown M
M
unknownunknown
S
SBeryllium, Cobalt, Iron, pH
Manganese, Nickel,
Sulfate, TDS
L
L
L
unknown
unknown
unknown
unknownunknownunknown
MMM
unknownunknownunknown
KK
KunknownunknownMunknown S_______Arsenic, Cr, Cobalt, Iron, Manganese_________ S___Aluminum, Barium, Iron, ______________________ ____________ Manganese, Mercury, TDS,
StrontiumPhysical State Codes
G – Containerized Gas
L – Liquid
S – Solid/Powder
Sl – Sludge
L
L
L
unknown
unknown
unknown
unknownunknownunknown
M
MM
unknownunknownunknown
SSS
Page 4 of 5
X.TOTAL AREA OF ALL DISPOSALS, SPILLS, OR RELEASESES OF HAZARDOUS SUBSTANCES OR
WASTE:
________ less than 1 acre
________ 1 acre or more, but less than 5 acres
________5 acres or more, but less than 10 acres
________ 10 acres or more
________ Unknown
XI.AVAILABILITY OF ENVIRONMENTAL ANALYTICAL DATA:
Do any environmental reports or laboratory analytical data exist for the site? _____Yes _____No
If yes, attach reports or data to this form.
XII.IDENTIFY WHETHER ANY OF THE FOLLOWING ARE PRESENT OR WERE PRESENT IN THE PAST
AT THE SITE (More than one may apply):
_______ Debris pile(s)_______ Tanks(s) above ground _______ Spill(s)
_______ Land treatment of sludges _______ Septic tanks (s) _______ Wastewater lagoons(s)
_______ Landfill(s) or buried waste _______ Surface impoundments(s) _______ Drums(s)
_______ Tanks(s) underground _______ Underground injection of waste
_______ Other (specify)______________________________________________________________________
XIII.ACCESSIBILITY OF SITE (More than one may apply):
_______ 24-hour security guard
_______ Security guard < 24-hour/day
_______ Physical barrier (steep bank, creek, walls, etc.)
Describe physical barriers__________________________________________________________________
_______________________________________________________________________________________
_______ Site completely surrounded by fence
_______ Site partially surrounded by fence
_______ Locked gate
_______ Unlocked gate
_______ No control of access to site
_______ Other (specify)____________________________________________________________________________
XIV.WATER SUPPLY SOURCES:
Identify whether the following are present on site or on adjacent property.
Present on site Present on Adjacent Property
Yes No Yes No
Spring _____ _____ _____ _____
Well _____ _____ _____ _____
Surface Water Intake _____ _____ _____ _____
XV.SITE SURFACE WATER:
Indicate whether any surface water bodies (e.g. streams and lakes) exist on the site or the property adjacent to the site.
______________________________________________________________________________________________
______________________________________________________________________________________________
______________________________________________________________________________________________
______________________________________________________________________________________________
______________________________________________________________________________________________
X
X
X
X CCR
X
Eno River to the East; Stony Creek and Pond running across the site
X
X
X
X
X
Eno River to the East; Stony Creek and Pond running across the site
Please see Attachment 1.
Attachment 1
Data Tables and Figures
LIST OF TABLES
Table 1 Soil Analytical Data
Table 2 SPLP Soil Analytical Data
Table 3 TCLP Soil Analytical Data
Table 4 Groundwater Analytical Data (Unfiltered)
Table 5 Dissolved Groundwater Analytical Data (Filtered)
Table 6 Suspected CCR Analytical Data
Table 7 SPLP Suspected CCR Analytical Data
Table 8 TCLP Suspected CCR Analytical Data
Table 9 Sediment Analytical Data
Table 10 Surface Water Analytical Data
Table 11 By Product Analytical Data
LIST OF FIGURES
Figure 1 Site Location
Figure 2 Historical Sampling Locations – Byproduct Samples
Figure 3 Historical Sampling Locations – Surface Water Samples
Figure 4 Historical Sampling Locations – Sediment Samples
Table 1. Soil Analytical Data
Former Eno Steam Plant Site Assessment
MW3-8.5-8.6-20170314 8.5-8.6 3/14/2017 30,100 <1.3 4.9 190 1.5 <16.3 <0.094 <163 <33.5 19.9 13.6 26.3MW2-14-16-20170322 14.0-16.0 3/22/2017 29,300 <1.2 18.4 57.1 0.7 <17.7 <0.086 1,330 <31 4.1 5.7 13.4MW3-20.5-21.0-20170314 20.5-21.0 3/14/2017 33,600 <1.4 22.8 354 5.7 78.3 0.38 5,140 <28.6 196 91.9 56.1MW4-10.0-10.5-20170321 10.0-10.5 3/21/2017 37,100 <1.3 8.0 80.5 0.84 <16.3 <0.096 <163 <30.7 8.6 2.3 17.5
MW1-9.5-10.0-20170321 9.5-10.0 3/21/2017 67,600 <2.8 4.7 395 5 <34.9 <0.2 770 <59 <3.5 90.9 114
Notes:1. Results and standards are provided in milligrams per kilogram (mg/kg),
except pH (standard units) and Radium-226/228 (pCi/g).
2. ft BGS indicates feet below ground surface.
3. NC indicates no criteria.
4. PSRG indicates preliminary health-based soil remediation goals.5. PSRGs are from the NC Department of Environmental Quality, Inactive Hazardous Sites Branch, October 2016.
https://ncdenr.s3.amazonaws.com/s3fs-public/Waste%20Management
/DWM/SF/IHS/guidance/SoilTable%20OCTOBER%202016%20-
%20Finalr3-header%20change.pdf
6. PSRGs provided for Chromium in the table is for Chromium (VI). 7. Yellow shading indicates exceedance of the residential PSRG. Results below the reporting limit are not shaded.8. Bold text indicates exceedance of the industrial PSRG. Results below
the reporting limit are not in bold text.
9. Underlined text indicates exceedance of the protection of
groundwater PSRG.10. The less than symbol (<) preceding the value indicates the result was less than the reporting limit.11. The symbol '--' indicates the sample was not analyzed.
12. CCR indicates coal combustion residuals.
Calcium ChlorideNCNC
NC NC
NC
Chromium Cobalt Copper0.3 4.6 620
6.3 70
Residential PSRG
Industrial PSRGProtection of Groundwater PSRG
Sample ID Sample Interval (ft BGS)Sample Date
CadmiumAluminum14.2
46,000
5.8 580 63 45
15,400
100,000
NC
Beryllium0.68 3,000 32
3 44,000
MONITORING WELL BORINGS - SOIL SAMPLES
BACKGROUND MONITORING WELL BORING - SOIL SAMPLES
Concentration (mg/kg)
196
3
3,200Boron
460
Antimony6.2
94
0.9
Arsenic Barium
9,400
3.8 0.9 700NC
GN6215/Duke Eno Soil 1 of 3
Table 1. Soil Analytical Data
Former Eno Steam Plant Site Assessment
MW3-8.5-8.6-20170314 8.5-8.6 3/14/2017MW2-14-16-20170322 14.0-16.0 3/22/2017MW3-20.5-21.0-20170314 20.5-21.0 3/14/2017MW4-10.0-10.5-20170321 10.0-10.5 3/21/2017
MW1-9.5-10.0-20170321 9.5-10.0 3/21/2017
Notes:1. Results and standards are provided in milligrams per kilogram (mg/kg),
except pH (standard units) and Radium-226/228 (pCi/g).
2. ft BGS indicates feet below ground surface.
3. NC indicates no criteria.
4. PSRG indicates preliminary health-based soil remediation goals.5. PSRGs are from the NC Department of Environmental Quality, Inactive Hazardous Sites Branch, October 2016.
https://ncdenr.s3.amazonaws.com/s3fs-public/Waste%20Management
/DWM/SF/IHS/guidance/SoilTable%20OCTOBER%202016%20-
%20Finalr3-header%20change.pdf
6. PSRGs provided for Chromium in the table is for Chromium (VI). 7. Yellow shading indicates exceedance of the residential PSRG. Results below the reporting limit are not shaded.8. Bold text indicates exceedance of the industrial PSRG. Results below
the reporting limit are not in bold text.
9. Underlined text indicates exceedance of the protection of
groundwater PSRG.10. The less than symbol (<) preceding the value indicates the result was less than the reporting limit.11. The symbol '--' indicates the sample was not analyzed.
12. CCR indicates coal combustion residuals.
Residential PSRG
Industrial PSRGProtection of Groundwater PSRG
Sample ID Sample Interval (ft BGS)Sample Date
MONITORING WELL BORINGS - SOIL SAMPLES
BACKGROUND MONITORING WELL BORING - SOIL SAMPLES
<3.4 40,900 19 --925 1,080 0.026 <3.3 13.3 3.9 --1,270<3.1 20,500 12.7 2.13 1,240 156 0.016 <3.5 <1.8 6.2 172 931<2.9 102,000 8.8 14.3 17,400 1,760 0.054 2 118 6.3 980 413<3.1 25,500 12.6 7.46 566 29.7 <0.0059 <3.3 7.6 4 183 850
<5.9 125,000 16.4 31.6 31,600 3,090 0.39 <7 10.6 5.6 410 <697
130 NC
Phosphorus0.32NickelpH Potassium
NC NC
4.6 NC
NC
NC
Lithium
460 NC
360 2.2 78 NC
5,200 3.13 1,160 4,400 NC
300ManganeseMercuryMolybdenum
270 NC NC
Lead
150
9,400 100,000
65 1
800
Magnesium62011,000 400 32 NC
Concentration in mg/kg
Fluoride Iron
NC
GN6215/Duke Eno Soil 2 of 3
Table 1. Soil Analytical Data
Former Eno Steam Plant Site Assessment
MW3-8.5-8.6-20170314 8.5-8.6 3/14/2017MW2-14-16-20170322 14.0-16.0 3/22/2017MW3-20.5-21.0-20170314 20.5-21.0 3/14/2017MW4-10.0-10.5-20170321 10.0-10.5 3/21/2017
MW1-9.5-10.0-20170321 9.5-10.0 3/21/2017
Notes:1. Results and standards are provided in milligrams per kilogram (mg/kg),
except pH (standard units) and Radium-226/228 (pCi/g).
2. ft BGS indicates feet below ground surface.
3. NC indicates no criteria.
4. PSRG indicates preliminary health-based soil remediation goals.5. PSRGs are from the NC Department of Environmental Quality, Inactive Hazardous Sites Branch, October 2016.
https://ncdenr.s3.amazonaws.com/s3fs-public/Waste%20Management
/DWM/SF/IHS/guidance/SoilTable%20OCTOBER%202016%20-
%20Finalr3-header%20change.pdf
6. PSRGs provided for Chromium in the table is for Chromium (VI). 7. Yellow shading indicates exceedance of the residential PSRG. Results below the reporting limit are not shaded.8. Bold text indicates exceedance of the industrial PSRG. Results below
the reporting limit are not in bold text.
9. Underlined text indicates exceedance of the protection of
groundwater PSRG.10. The less than symbol (<) preceding the value indicates the result was less than the reporting limit.11. The symbol '--' indicates the sample was not analyzed.
12. CCR indicates coal combustion residuals.
Residential PSRG
Industrial PSRGProtection of Groundwater PSRG
Sample ID Sample Interval (ft BGS)Sample Date
MONITORING WELL BORINGS - SOIL SAMPLES
BACKGROUND MONITORING WELL BORING - SOIL SAMPLES
----<0.65 <1.6 <326 243 <0.65 52.4 23.20.889 <1 <0.6 <1.8 <354 <31 <0.6 26 22.31.72 <1 6.3 <3.6 <71.2 57.3 <0.71 124 1971.61 <1 <0.67 <1.6 <326 144 <0.67 36.3 22.6
0.373 <1 3.5 <3.5 <697 <59 <1.4 299 193
3.4 NC NC 0.28 6 1,200
NC NC 2.4 1,160 70,000
Sulfate Thallium Vanadium ZincRadium-226 Radium-228 Selenium
NC NC 2.1
NC 0.156 78 4,600SilverSodium
NC NC 1,160 1,160
NC NC 78 78 NC
Concentration in mg/kg
GN6215/Duke Eno Soil 3 of 3
Table 2. SPLP Soil Analytical Data Former Eno Steam Plant Site Assessment
MW3-8.5-8.6-20170314 8.5-8.6 3/14/2017 2,400 0.6 <0.25 140 1.8 52.2 <0.3 1,000 <3,400 0.52 14.6 37.7MW2-14-16-20170322 14.0-16.0 3/22/2017 <100 <0.5 <0.25 <50 <0.1 22.2 <0.3 <1,000 <2,500 <0.5 0.07 0.76MW3-20.5-21.0-20170314 20.5-21.0 3/14/2017 64,500 <0.5 4.9 610 2 43.7 0.44 10,000 <3,000 191 131 90MW4-10.0-10.5-20170321 10.0-10.5 3/21/2017 700 <0.5 <0.3 130 1.5 36.2 <0.3 <1,000 <2,500 <0.5 3.1 5.3
MW1-9.5-10.0-20170321 9.5-10.0 3/21/2017 <100 1.4 <0.25 <50 0.14 15.9 <0.3 <1,000 2,600 0.7 0.24 <0.6
Concentration (µg/L)
10 NC 1,0002NC250,000NCNCNC NC 1 NC15A NCAC 2L Groundwater Standards (in µg/L)NC NC 10 700 NC 700 Cadmium Calcium Chloride Chromium Cobalt Copper
Notes:1. SPLP indicates Synthetic Precipitation Leaching Procedure. 2. Results and standards are provided in micrograms per liter (µg/L).
3. IMAC indicates Interim Maximum Allowable Concentrations.
4. Groundwater Standards and IMAC values are from Classifications
and Water Quality Standards Applicable to the Groundwaters of NC
(North Carolina Department of Environmental Quality,
Division of Water Quality, February 2016). 5. ft BGS indicates feet below ground surface. 6. NC indicates no criteria. 7. Yellow shading indicates result exceeds the screening criteria. Results below the reporting limit are not shaded. 8. Bold text indicates result exceeds the IMAC criteria. Results below the reporting limit are not in bold text. 9. The less than symbol (<) preceding the value indicates the result was less than the reporting limit.
10. The symbol '--' indicates the sample was not analyzed.
11. CCR indicates coal combustion residuals.
Aluminum Antimony Arsenic Barium Beryllium Boron
MONITORING WELL BORINGS BACKGROUND - SOIL SAMPLES
MONITORING WELL BORINGS - SOIL SAMPLES
Sample ID Sample Interval (ft BGS)Sample Date
15A NCAC 2L IMACs (in µg/L)NC 1 NC NC 4 NC
GN6215/Duke Eno SPLP 1 of 3
Table 2. SPLP Soil Analytical Data Former Eno Steam Plant Site Assessment
MW3-8.5-8.6-20170314 8.5-8.6 3/14/2017MW2-14-16-20170322 14.0-16.0 3/22/2017MW3-20.5-21.0-20170314 20.5-21.0 3/14/2017MW4-10.0-10.5-20170321 10.0-10.5 3/21/2017
MW1-9.5-10.0-20170321 9.5-10.0 3/21/2017
15A NCAC 2L Groundwater Standards (in µg/L)
Notes:1. SPLP indicates Synthetic Precipitation Leaching Procedure. 2. Results and standards are provided in micrograms per liter (µg/L).
3. IMAC indicates Interim Maximum Allowable Concentrations.
4. Groundwater Standards and IMAC values are from Classifications
and Water Quality Standards Applicable to the Groundwaters of NC
(North Carolina Department of Environmental Quality,
Division of Water Quality, February 2016). 5. ft BGS indicates feet below ground surface. 6. NC indicates no criteria. 7. Yellow shading indicates result exceeds the screening criteria. Results below the reporting limit are not shaded. 8. Bold text indicates result exceeds the IMAC criteria. Results below the reporting limit are not in bold text. 9. The less than symbol (<) preceding the value indicates the result was less than the reporting limit.
10. The symbol '--' indicates the sample was not analyzed.
11. CCR indicates coal combustion residuals.
MONITORING WELL BORINGS BACKGROUND - SOIL SAMPLES
MONITORING WELL BORINGS - SOIL SAMPLES
Sample ID Sample Interval (ft BGS)Sample Date
15A NCAC 2L IMACs (in µg/L)
<340 1,600 1.1 --350 370 0.097 <0.55 10 --<5,000<250 <50 <0.4 <100 170 <5 <0.09 <0.55 <5 <500 <5,000<300 131,000 6.1 <100 30,700 2,000 0.092 <0.55 200 <500 <5,000<250 78 1.2 <100 170 42 <0.09 <0.55 8.7 <500 <5,000
<250 120 <0.4 <100 <100 <5 <0.09 <0.55 <5 <500 <5,000
Concentration in µg/L
NC NC NC NC NCNCNCNCNCNCNC1NC100NCNC2,000 300 15 NC NC 50 Mercury Molybdenum Nickel Phosphorus PotassiumFluorideIronLeadLithiumMagnesiumManganese
GN6215/Duke Eno SPLP 2 of 3
Table 2. SPLP Soil Analytical Data Former Eno Steam Plant Site Assessment
MW3-8.5-8.6-20170314 8.5-8.6 3/14/2017MW2-14-16-20170322 14.0-16.0 3/22/2017MW3-20.5-21.0-20170314 20.5-21.0 3/14/2017MW4-10.0-10.5-20170321 10.0-10.5 3/21/2017
MW1-9.5-10.0-20170321 9.5-10.0 3/21/2017
15A NCAC 2L Groundwater Standards (in µg/L)
Notes:1. SPLP indicates Synthetic Precipitation Leaching Procedure. 2. Results and standards are provided in micrograms per liter (µg/L).
3. IMAC indicates Interim Maximum Allowable Concentrations.
4. Groundwater Standards and IMAC values are from Classifications
and Water Quality Standards Applicable to the Groundwaters of NC
(North Carolina Department of Environmental Quality,
Division of Water Quality, February 2016). 5. ft BGS indicates feet below ground surface. 6. NC indicates no criteria. 7. Yellow shading indicates result exceeds the screening criteria. Results below the reporting limit are not shaded. 8. Bold text indicates result exceeds the IMAC criteria. Results below the reporting limit are not in bold text. 9. The less than symbol (<) preceding the value indicates the result was less than the reporting limit.
10. The symbol '--' indicates the sample was not analyzed.
11. CCR indicates coal combustion residuals.
MONITORING WELL BORINGS BACKGROUND - SOIL SAMPLES
MONITORING WELL BORINGS - SOIL SAMPLES
Sample ID Sample Interval (ft BGS)Sample Date
15A NCAC 2L IMACs (in µg/L)
----<1.6 0.42 <5,000 20,500 0.28 0.36 31----<1.6 <0.4 <5,000 1,800 <0.1 <0.35 <10<1 <1 17.3 0.54 5,600 5,900 0.21 70.9 410----<1.6 <0.4 <5,000 9,800 0.1 <0.35 40
----<1.6 <0.4 <5,000 <1,000 0.1 <0.35 <10
0.2 0.3 NC
Concentration in µg/L
NC NC NC NC NC NC NC NC 1,0002020NC250,000NCNC Thallium Vanadium ZincRadium-226 Radium-228 Selenium Silver Sodium Sulfate
GN6215/Duke Eno SPLP 3 of 3
Table 3. TCLP Soil Analytical Data
Former Eno Steam Plant Site Assessment
MW3-8.5-8.6-20170314 8.5-8.6 3/14/2017 ----------------
MW2-14-16-20170322 14.0-16.0 3/22/2017 <14 260 <2.5 4.8 <20 <0.09 <19 5.2
MW3-20.5-21.0-20170314 20.5-21.0 3/14/2017 <14 1,700 <2.5 3.2 <20 <0.09 <19 <0.5MW4-10.0-10.5-20170321 10.0-10.5 3/21/2017 <14 220 <2.5 2.9 30 <0.09 <19 3.8
MW1-9.5-10.0-20170321 9.5-10.0 3/21/2017 <14 2,100 <2.5 <2 <20 <0.09 <19 <0.5
Cadmium
Sample ID Sample
Interval (ft BGS)Sample Date
Arsenic
Concentration (µg/L)
Selenium
15A NCAC 2L Groundwater Standards (in µg/L)10 700
SilverMercuryChromiumLeadBarium
15A NCAC 2L IMACs (in µg/L)NC NC
20 20115
NC NC
2 10
Notes:
1. TCLP indicates Toxicity Characteristic Leaching Procedure.
2. Results and standards are provided in micrograms per liter (µg/L).
3. IMAC indicates Interim Maximum Allowable Concentrations.4. Groundwater Standards and IMAC values are from Classifications and Water Quality Standards Applicable to the Groundwaters of NC (North Carolina Department of Environmental Quality, Division of Water
Quality, February 2016).
5. ft BGS indicates feet below ground surface.
6. NC indicates no criteria.
7. Yellow shading indicates result exceeds the screening criteria. Results below
the reporting limit are not shaded.8. Bold text indicates result exceeds the IMAC criteria. Results below the reporting limit are not in bold text.9. The less than symbol (<) preceding the value indicates the result was less
than the reporting limit.
10. The symbol '--' indicates the sample was not analyzed.
11. CCR indicates coal combustion residuals.
MONITORING WELL BORINGS BACKGROUND - SOIL SAMPLES
MONITORING WELL BORINGS - SOIL SAMPLES
NC NCNCNC
GN6215/Duke Eno TCLP 1 of 1
Table 4. Groundwater Analytical Data (Unfiltered)
Former Eno Steam Plant Site Assessment
MW2-220170412 12-22 4/12/2017 931 <1 <1 43 <0.1 <25 1.43 4,380 13,000 <1 23.3 1.47
MW2-20170606 12-22 6/6/2017 1,340 <1 <1 52 <0.1 <25 1.24 5,160 9,200 <1 9.3 2.31
MW3-20170410 20-30 4/10/2017 27 <1 1.32 22 <0.1 <25 <0.1 54,500 7,200 <1 4.24 <1
MW3-20170410-Dup 20-30 4/10/2017 27 <1 1.38 23 12.9 <25 <0.1 62,100 7,300 <1 4.40 <1
MW3-20170605 20-30 6/5/2017 12 <1 1.48 13 <0.1 <25 <0.1 53,100 7,400 <1 1.64 <1
MW4-20170410 7-17 4/10/2017 25,400 <1 2.84 25 <0.1 <25 1.9 49,500 4,900 1.89 209 27.80
MW4-20170605 7-17 6/5/2017 20,200 <1 2.46 18 8.8 <25 1.5 43,400 5,400 1.67 157 22.00
MW1-20170411 20-30 4/11/2017 96 <1 <1 64 <0.1 <25 <0.1 19,600 13,000 <1 <1 <1
MW1-20170606 20-30 6/6/2017 117 <1 <1 31 <0.1 <25 <0.1 31,700 12,000 <1 <1 <1
MW1-20170606DUP 20-30 6/6/2017 112 <1 <1 31 <0.1 <25 <0.1 31,700 12,000 <1 <1 <1
Notes:
1.Results and standards are provided in micrograms per liter
(µg/L), except Specific Conductance (µmhos/cm); pH (standard
units); bicarbonate, carbonate, total alkalinity, and hardness
(mg/L as CaCO3); ammonia and nitrate (mg/L as N);
phosphorus (mg/L as P); and Radium-226/228 (pCi/L).
2.IMAC indicates Interim Maximum Allowable Concentrations.3.Groundwater Standards and IMAC values are provided in Classifications and Water Quality Standards Applicable to the
Groundwaters of North Carolina (North Carolina Department of
Environmental Quality, Division of Water Quality, February
2016).
4.NC indicates no criteria.5.Yellow shading indicates result exceeds the 2L GW standard. Results below the reporting limit are not shaded.
6.Bold text indicates result exceeds the IMAC criteria. Results
below the reporting limit are not in bold text.
7.The less than symbol (<) preceding the value indicates the
result was less than the reporting limit.8.TDS indicates total dissolved solids.9.TSS indicates total suspended solids.10.ft BGS indicates feet below ground surface.
Total Concentration (µg/L)
BACKGROUND WELL
MONITORING WELLS
NC
1
10
NC
250,000
NC
10
NC
NC
1
1,000
NCNC
Cadmium Calcium
15A NCAC 2L Groundwater Standards (in µg/L)
15A NCAC 2L IMACs (in µg/L)
2
NC
NC
NC
700
NC
NC
4
700
Sample ID Screen Interval
(ft BGS)Sample Date
Aluminum Antimony Arsenic Barium Beryllium Boron
NC
NC
Chloride Chromium Cobalt Copper
GN6215/Duke Eno Groundwater 1 of 4
Table 4. Groundwater Analytical Data (Unfiltered)
Former Eno Steam Plant Site Assessment
MW2-220170412 12-22 4/12/2017
MW2-20170606 12-22 6/6/2017
MW3-20170410 20-30 4/10/2017
MW3-20170410-Dup 20-30 4/10/2017
MW3-20170605 20-30 6/5/2017
MW4-20170410 7-17 4/10/2017
MW4-20170605 7-17 6/5/2017
MW1-20170411 20-30 4/11/2017
MW1-20170606 20-30 6/6/2017
MW1-20170606DUP 20-30 6/6/2017
Notes:
1.Results and standards are provided in micrograms per liter
(µg/L), except Specific Conductance (µmhos/cm); pH (standard
units); bicarbonate, carbonate, total alkalinity, and hardness
(mg/L as CaCO3); ammonia and nitrate (mg/L as N);
phosphorus (mg/L as P); and Radium-226/228 (pCi/L).
2.IMAC indicates Interim Maximum Allowable Concentrations.3.Groundwater Standards and IMAC values are provided in Classifications and Water Quality Standards Applicable to the
Groundwaters of North Carolina (North Carolina Department of
Environmental Quality, Division of Water Quality, February
2016).
4.NC indicates no criteria.5.Yellow shading indicates result exceeds the 2L GW standard. Results below the reporting limit are not shaded.
6.Bold text indicates result exceeds the IMAC criteria. Results
below the reporting limit are not in bold text.
7.The less than symbol (<) preceding the value indicates the
result was less than the reporting limit.8.TDS indicates total dissolved solids.9.TSS indicates total suspended solids.10.ft BGS indicates feet below ground surface.
BACKGROUND WELL
MONITORING WELLS
15A NCAC 2L Groundwater Standards (in µg/L)
15A NCAC 2L IMACs (in µg/L)
Sample ID Screen Interval
(ft BGS)Sample Date
<100 1,090 <1 1,950 832 0.00371 <1 10.2 6.56 0.021 3,610 0.23 0.978
<100 717 <1 2,130 604 0.00122 1 3.9 6.43 0.020 2,810 0.57 <1
<100 82 <1 10,300 1,700 0.00440 3.98 <1 6.67 0.082 1,620 3.34 <1
<100 85 <1 11,500 1,680 0.00411 3.93 <1 6.67 0.087 1,860 3.03 <1
<100 239 <1 9,920 1,700 0.00208 3.41 <1 6.66 0.118 1,470 1.71 <1
<1,000 2,720 1.12 15,100 4,080 0.00713 <1 188 3.91 0.012 7,470 1.53 0.691
1,000 5,510 1.03 13,800 3,850 0.00433 <1 125 4.28 <0.005 8,310 0.55 <1
<100 80 <1 3,880 7.17 0.00214 <1 <1 6.03 0.020 1,580 1.86 <1
<100 111 <1 4,240 8.31 0.00089 <1 <1 6.48 0.022 1,280 1 <1
<100 101 <1 4,230 7.84 0.00096 <1 <1 6.37 0.023 1,290 1 <1
Concentration (µg/L)
Radium-226
NC
NC
Radium-228
NC
NC
15
NC
NC
NC
Potassium
NC
NC
Nickel
100
NC
pH
6.5 - 8.5
NC
1
NC
Molybdenum
300
NC
NC
NC
Magnesium
NC
NC
Manganese
50
NC
2,000
NC
Iron LeadFluoride PhosphorusMercury
GN6215/Duke Eno Groundwater 2 of 4
Table 4. Groundwater Analytical Data (Unfiltered)
Former Eno Steam Plant Site Assessment
MW2-220170412 12-22 4/12/2017
MW2-20170606 12-22 6/6/2017
MW3-20170410 20-30 4/10/2017
MW3-20170410-Dup 20-30 4/10/2017
MW3-20170605 20-30 6/5/2017
MW4-20170410 7-17 4/10/2017
MW4-20170605 7-17 6/5/2017
MW1-20170411 20-30 4/11/2017
MW1-20170606 20-30 6/6/2017
MW1-20170606DUP 20-30 6/6/2017
Notes:
1.Results and standards are provided in micrograms per liter
(µg/L), except Specific Conductance (µmhos/cm); pH (standard
units); bicarbonate, carbonate, total alkalinity, and hardness
(mg/L as CaCO3); ammonia and nitrate (mg/L as N);
phosphorus (mg/L as P); and Radium-226/228 (pCi/L).
2.IMAC indicates Interim Maximum Allowable Concentrations.3.Groundwater Standards and IMAC values are provided in Classifications and Water Quality Standards Applicable to the
Groundwaters of North Carolina (North Carolina Department of
Environmental Quality, Division of Water Quality, February
2016).
4.NC indicates no criteria.5.Yellow shading indicates result exceeds the 2L GW standard. Results below the reporting limit are not shaded.
6.Bold text indicates result exceeds the IMAC criteria. Results
below the reporting limit are not in bold text.
7.The less than symbol (<) preceding the value indicates the
result was less than the reporting limit.8.TDS indicates total dissolved solids.9.TSS indicates total suspended solids.10.ft BGS indicates feet below ground surface.
BACKGROUND WELL
MONITORING WELLS
15A NCAC 2L Groundwater Standards (in µg/L)
15A NCAC 2L IMACs (in µg/L)
Sample ID Screen Interval
(ft BGS)Sample Date
<1 <0.3 17,500 57 35,000 <1 <10 33 1.43 <5 15,300 <5,000 15,300
<1 1.1 9,660 58 14,000 <0.2 <10 42 1.06 <5 13,000 <5,000 13,000
<1 <0.3 12,800 311 6,900 <1 <10 <5 <1 6.20 180,000 <5,000 180,000
<1 <0.3 14,600 313 7,000 <1 <10 <5 <1 6.92 <5,000 <5,000 <5,000
<1 <0.3 12,300 297 6,800 <0.2 <10 <5 <0.3 5.42 194,000 <5,000 194,000
2.28 <0.3 18,500 778 770,000 <1 <10 7 <1 438 179,000 <5,000 179,000
1.78 <0.3 32,400 669 410,000 0.3 <10 <5 <0.3 343 <5,000 <5,000 <5,000
<1 <0.3 8,950 136 5,300 <1 <10 <5 <1 <5 56,900 <5,000 56,900
<1 <0.3 8,700 134 5,400 <0.2 <10 6 0.48 <5 91,200 <5,000 91,200
<1 <0.3 8,690 132 5,400 <0.2 <10 <5 0.472 <5 93,600 <5,000 93,600
Concentration (µg/L)
Alkalinity, TotalAlkalinity, Bicarbonate
NC
NC
Alkalinity, Carbonate
NC
NC
250,000
NC
Thallium
NC
0.2
Sodium
NC
NC
Strontium
NC
NC
20
NC
Silver
NC
0.3
Zinc
1,000
NC
Tin
NC
2,000
Titanium
NC
NC
Vanadium
NC
NC
20
NC
Selenium Sulfate
GN6215/Duke Eno Groundwater 3 of 4
Table 4. Groundwater Analytical Data (Unfiltered)
Former Eno Steam Plant Site Assessment
MW2-220170412 12-22 4/12/2017
MW2-20170606 12-22 6/6/2017
MW3-20170410 20-30 4/10/2017
MW3-20170410-Dup 20-30 4/10/2017
MW3-20170605 20-30 6/5/2017
MW4-20170410 7-17 4/10/2017
MW4-20170605 7-17 6/5/2017
MW1-20170411 20-30 4/11/2017
MW1-20170606 20-30 6/6/2017
MW1-20170606DUP 20-30 6/6/2017
Notes:
1.Results and standards are provided in micrograms per liter
(µg/L), except Specific Conductance (µmhos/cm); pH (standard
units); bicarbonate, carbonate, total alkalinity, and hardness
(mg/L as CaCO3); ammonia and nitrate (mg/L as N);
phosphorus (mg/L as P); and Radium-226/228 (pCi/L).
2.IMAC indicates Interim Maximum Allowable Concentrations.3.Groundwater Standards and IMAC values are provided in Classifications and Water Quality Standards Applicable to the
Groundwaters of North Carolina (North Carolina Department of
Environmental Quality, Division of Water Quality, February
2016).
4.NC indicates no criteria.5.Yellow shading indicates result exceeds the 2L GW standard. Results below the reporting limit are not shaded.
6.Bold text indicates result exceeds the IMAC criteria. Results
below the reporting limit are not in bold text.
7.The less than symbol (<) preceding the value indicates the
result was less than the reporting limit.8.TDS indicates total dissolved solids.9.TSS indicates total suspended solids.10.ft BGS indicates feet below ground surface.
BACKGROUND WELL
MONITORING WELLS
15A NCAC 2L Groundwater Standards (in µg/L)
15A NCAC 2L IMACs (in µg/L)
Sample ID Screen Interval
(ft BGS)Sample Date
19 155 91,000 20,000 0.03 <0.02 <100 <100
22 93 59,000 13,000 0.03 <0.02 <100 <100
178 338 220,000 <5,000 <0.023 0.032 <100 310
202 631 220,000 <5,000 <0.023 0.031 <100 310
173 391 240,000 <5,000 <0.023 0.059 <100 330
186 340 520,000 <5,000 0.24 <0.02 <100 <1,000
165 719 510,000 <5,000 0.26 0.07 <100 <1,000
65 157 130,000 <5,000 1.6 <0.02 <100 <100
97 241 140,000 <5,000 1.5 <0.02 <100 <100
97 241 140,000 <5,000 1.5 <0.02 <100 <100
Concentration (µg/L)
Ammonia
NC
1,500
Sulfide
NC
NC
TSS
NC
NC
Nitrate as N
10,000
NC
Specific Conductance
NC
NC
TDS
500,000
NC
NC
NC
NC
NC
BromideHardness
GN6215/Duke Eno Groundwater 4 of 4
Table 5. Dissolved Groundwater Analytical Data (Filtered)
Former Eno Steam Plant Site Assessment
MW2-220170412 12-22 4/12/2017 81 <1 <1 33 <0.1 <25 1.34 <1 21.4 <1 100 <1
MW2-20170606 12-22 6/6/2017 <5 <1 <1 41 <0.1 <25 1.28 <1 9.4 <1 <10 <1
MW3-20170410 20-30 4/10/2017 25 <1 1.25 24 <0.1 <25 <0.1 <1 4.07 <1 84 <1
MW3-20170410-Dup 20-30 4/10/2017 24 <1 1.25 22 14.1 <25 <0.1 <1 4.05 <1 79 <1
MW3-20170605 20-30 6/5/2017 <5 <1 1.36 15 <0.1 <25 <0.1 <1 1.67 <1 174 <1
MW4-20170410 7-17 4/10/2017 26,500 <1 2.68 22 <0.1 <25 1.87 1.57 194 26.8 2,200 1.12
MW4-20170605 7-17 6/5/2017 18,900 <1 2.31 20 9.7 <25 1.5 2 150 20 6,650 <1
MW1-20170411 20-30 4/11/2017 13 <1 <1 66 <0.1 <25 <0.1 <1 <1 <1 <10 <1
MW1-20170606 20-30 6/6/2017 16 <1 <1 32 <0.1 <25 <0.1 <1 <1 <1 24 <1
MW1-20170606DUP 20-30 6/6/2017 16 <1 <1 33 <0.1 <25 <0.1 <1 <1 <1 23 <1
Notes:
1.Results and standards are provided in micrograms per liter (µg/L).2.Samples were field filtered with a 0.45 micron filter, except forMercury, which was lab filtered.
3.IMAC indicates Interim Maximum Allowable Concentrations.
4.Groundwater Standards and IMAC values are provided in
Classifications and Water Quality Standards Applicable to the
Groundwaters of North Carolina (North Carolina Department of Environmental Quality, Division of Water Quality, February 2016).5.2L and IMAC Standards listed in table are applicable to total concentrations (unfiltered). The dissolved concentration results in
this table are compared to the standards for total concentrations to
provide context.
5.NC indicates no criteria.6.Yellow shading indicates result exceeds the 2L GW standard. Results below the reporting limit are not shaded.7.Bold text indicates result exceeds the IMAC criteria. Results
below the reporting limit are not in bold text.
8.The less than symbol (<) preceding the value indicates the result
was less than the reporting limit.9.ft BGS indicates feet below ground surface.
MONITORING WELLS
BACKGROUND WELL
1 NC NC NC4NCNCNC15A NCAC 2L IMACs (in µg/L)NC 1 NC NC
1,000 300 15700210NC15A NCAC 2L Groundwater Standards (in µg/L)NC NC 10 700 NC
Cobalt Copper
Sample ID Screen Interval (ft
BGS)Sample Date
Aluminum Antimony Arsenic Barium Iron
Dissolved Concentration (µg/L)
LeadBerylliumBoronCadmiumChromium
GN6215/Duke Eno Dissolved Groundwater 1 of 2
Table 5. Dissolved Groundwater Analytical Data (Filtered)
Former Eno Steam Plant Site Assessment
MW2-220170412 12-22 4/12/2017
MW2-20170606 12-22 6/6/2017
MW3-20170410 20-30 4/10/2017
MW3-20170410-Dup 20-30 4/10/2017
MW3-20170605 20-30 6/5/2017
MW4-20170410 7-17 4/10/2017
MW4-20170605 7-17 6/5/2017
MW1-20170411 20-30 4/11/2017
MW1-20170606 20-30 6/6/2017
MW1-20170606DUP 20-30 6/6/2017
Notes:
1.Results and standards are provided in micrograms per liter (µg/L).2.Samples were field filtered with a 0.45 micron filter, except forMercury, which was lab filtered.
3.IMAC indicates Interim Maximum Allowable Concentrations.
4.Groundwater Standards and IMAC values are provided in
Classifications and Water Quality Standards Applicable to the
Groundwaters of North Carolina (North Carolina Department of Environmental Quality, Division of Water Quality, February 2016).5.2L and IMAC Standards listed in table are applicable to total concentrations (unfiltered). The dissolved concentration results in
this table are compared to the standards for total concentrations to
provide context.
5.NC indicates no criteria.6.Yellow shading indicates result exceeds the 2L GW standard. Results below the reporting limit are not shaded.7.Bold text indicates result exceeds the IMAC criteria. Results
below the reporting limit are not in bold text.
8.The less than symbol (<) preceding the value indicates the result
was less than the reporting limit.9.ft BGS indicates feet below ground surface.
MONITORING WELLS
BACKGROUND WELL
15A NCAC 2L IMACs (in µg/L)
15A NCAC 2L Groundwater Standards (in µg/L)
Sample ID Screen Interval (ft
BGS)Sample Date
693 0.00136 <1 10.1 <1 <0.3 47 <1 <10 <5 <1 <5
493 0.00095 <1 4.26 <1 <0.3 52 <0.2 <10 <5 <0.3 <5
1,710 0.00149 3.68 <1 <1 <0.3 314 <1 <10 <5 <1 6.75
1,650 0.00161 3.58 <1 <1 <0.3 305 <1 <10 <5 <1 6.52
1,700 0.00073 3.39 <1 <1 <0.3 310 <0.2 <10 <5 <0.3 5.16
4,040 0.00297 <1 167 2.1 <0.3 788 <1 <10 <5 <1 420
3,870 0.00100 <1 122 1.73 <0.3 698 0.206 <10 <5 <0.3 329
5.44 0.00103 <1 <1 <1 <0.3 141 <1 <10 <5 <1 <5
7.14 0.000623 <1 <1 <1 <0.3 142 <0.2 <10 <5 0.364 <5
7.34 <0.0005 <1 <1 <1 <0.3 142 <0.2 <10 <5 0.301 <5
NCNC0.2 2,000 NC 0.3NCNCNCNCNCNC
NC NC NC50 NC 1,0002020NC1NC100
ZincStrontiumThalliumTinTitaniumVanadiumSeleniumSilverManganeseMercuryMolybdenumNickel
Dissolved Concentration (µg/L)
GN6215/Duke Eno Dissolved Groundwater 2 of 2
Table 6. Suspected CCR Analytical Data
Former Eno Steam Plant Site Assessment
MW2-6-8-20170322 6.0-8.0 3/22/2017 19,600 <2.9 9.1 82.7 0.52 16.6 <0.17 785 <62.6 9.4 10.7 13.5
MW2-8-10-20170322 8.0-10.0 3/22/2017 4,800 <2.4 9.9 36.1 0.61 35.5 1.5 338,000 <54.7 33.5 4.4 2.7
MW2-10-12-20170322 10.0-12.0 3/22/2017 23,600 <3.2 22.9 95.9 0.7 21.8 <0.19 1,080 <75.9 16.8 12.2 19.2
Notes:
1. Results and standards are provided in milligrams per kilogram
(mg/kg),
except pH (standard units) and Radium-226/228 (pCi/g).
2. ft BGS indicates feet below ground surface.
3. NC indicates no criteria.
4. PSRG indicates preliminary health-based soil remediation goals.
5. PSRGs are from the NC Department of Environmental Quality,
Inactive Hazardous Sites Branch, October 2016.
https://ncdenr.s3.amazonaws.com/s3fs-
public/Waste%20Management
/DWM/SF/IHS/guidance/SoilTable%20OCTOBER%202016%20-
%20Finalr3-header%20change.pdf
6. PSRGs provided for Chromium in the table is for Chromium (VI).
7. Yellow shading indicates exceedance of the residential PSRG.
Results below the reporting limit are not shaded.
8. Bold text indicates exceedance of the industrial PSRG. Results
below the reporting limit are not in bold text.
9. Underlined text indicates exceedance of the protection of
groundwater PSRG.
10. The less than symbol (<) preceding the value indicates the result
was less than the reporting limit.
11. The symbol '--' indicates the sample was not analyzed.
12. CCR indicates coal combustion residuals.
Sample ID Sample
Interval (ft BGS)Sample Date Concentration (mg/kg)
Chromium Cobalt CopperAluminumAntimonyArsenicBariumBerylliumBoronCadmiumCalciumChloride
0.68 3,000 32 3,200 14.2 NC NC 0.3
Industrial PSRG 100,000 94 3 44,000 460 46,000 196
Residential PSRG 15,400 6.2
NC 6.3 70 9,400
0.9 700
4.6 620
Protection of Groundwater PSRG NC 0.9 5.8 580 63 45 3
NC
MONITORING WELL BORINGS - SUSPECTED CCR SAMPLE
NC NC 3.8
GN6215/Duke Eno SurfaceWater 1 of 3
Table 6. Suspected CCR Analytical Data
Former Eno Steam Plant Site Assessment
MW2-6-8-20170322 6.0-8.0 3/22/2017
MW2-8-10-20170322 8.0-10.0 3/22/2017
MW2-10-12-20170322 10.0-12.0 3/22/2017
Notes:
1. Results and standards are provided in milligrams per kilogram
(mg/kg),
except pH (standard units) and Radium-226/228 (pCi/g).
2. ft BGS indicates feet below ground surface.
3. NC indicates no criteria.
4. PSRG indicates preliminary health-based soil remediation goals.
5. PSRGs are from the NC Department of Environmental Quality,
Inactive Hazardous Sites Branch, October 2016.
https://ncdenr.s3.amazonaws.com/s3fs-
public/Waste%20Management
/DWM/SF/IHS/guidance/SoilTable%20OCTOBER%202016%20-
%20Finalr3-header%20change.pdf
6. PSRGs provided for Chromium in the table is for Chromium (VI).
7. Yellow shading indicates exceedance of the residential PSRG.
Results below the reporting limit are not shaded.
8. Bold text indicates exceedance of the industrial PSRG. Results
below the reporting limit are not in bold text.
9. Underlined text indicates exceedance of the protection of
groundwater PSRG.
10. The less than symbol (<) preceding the value indicates the result
was less than the reporting limit.
11. The symbol '--' indicates the sample was not analyzed.
12. CCR indicates coal combustion residuals.
Sample ID Sample
Interval (ft BGS)Sample Date
Industrial PSRG
Residential PSRG
Protection of Groundwater PSRG
MONITORING WELL BORINGS - SUSPECTED CCR SAMPLE
<6.3 23,000 13.7 --1,600 239 0.084 1.2 7.2 5.4 --738
<5.5 13,000 9.8 --2,640 114 0.019 12.6 15.9 8.1 --1,280
<7.6 30,100 14.7 --1,900 333 0.1 2.2 10.2 5.8 --920
Concentration in mg/kg
Fluoride Lithium Magnesium Manganese Mercury Molybdenum Nickel pH Phosphorus PotassiumIronLead
32 NC 360 2.2 78 300 NC 0.32 NC
9,400
NC
11,000 400
100,000 800 460 NC 5,200 3.13
620
1,160 4,400 NC 4.6 NC
NC 130 NC NC NC150270NCNC651
GN6215/Duke Eno SurfaceWater 2 of 3
Table 6. Suspected CCR Analytical Data
Former Eno Steam Plant Site Assessment
MW2-6-8-20170322 6.0-8.0 3/22/2017
MW2-8-10-20170322 8.0-10.0 3/22/2017
MW2-10-12-20170322 10.0-12.0 3/22/2017
Notes:
1. Results and standards are provided in milligrams per kilogram
(mg/kg),
except pH (standard units) and Radium-226/228 (pCi/g).
2. ft BGS indicates feet below ground surface.
3. NC indicates no criteria.
4. PSRG indicates preliminary health-based soil remediation goals.
5. PSRGs are from the NC Department of Environmental Quality,
Inactive Hazardous Sites Branch, October 2016.
https://ncdenr.s3.amazonaws.com/s3fs-
public/Waste%20Management
/DWM/SF/IHS/guidance/SoilTable%20OCTOBER%202016%20-
%20Finalr3-header%20change.pdf
6. PSRGs provided for Chromium in the table is for Chromium (VI).
7. Yellow shading indicates exceedance of the residential PSRG.
Results below the reporting limit are not shaded.
8. Bold text indicates exceedance of the industrial PSRG. Results
below the reporting limit are not in bold text.
9. Underlined text indicates exceedance of the protection of
groundwater PSRG.
10. The less than symbol (<) preceding the value indicates the result
was less than the reporting limit.
11. The symbol '--' indicates the sample was not analyzed.
12. CCR indicates coal combustion residuals.
Sample ID Sample
Interval (ft BGS)Sample Date
Industrial PSRG
Residential PSRG
Protection of Groundwater PSRG
MONITORING WELL BORINGS - SUSPECTED CCR SAMPLE
----<1.4 <29.4 <58.8 <62.6 <1.4 42 33.3
----1.7 <6.6 5,460 <54.7 2 86.8 27.6
----<1.6 <47.3 <94.6 <75.9 <1.6 44.6 39.7
Concentration in mg/kg
Vanadium ZincSeleniumSilverSodiumSulfateThalliumRadium-228Radium-226
78 4,600NC7878NCNC0.156NC
NC 1,160 70,000NC1,160 1,160 NC NC 2.4
6 1,200NC2.1 3.4 NC NC 0.28NC
GN6215/Duke Eno SurfaceWater 3 of 3
Table 7. SPLP Suspected CCR Analytical Data Former Eno Steam Plant Site Assessment
MW2-6-8-20170322 6.0-8.0 3/22/2017 76,000 <2.5 16.3 390 1.2 <250 <0.4 <5,000 6,900 38.3 18.9MW2-8-10-20170322 8.0-10.0 3/22/2017 2,500 <2.5 <2.5 <250 <0.5 <250 <0.4 <5,000 <5,000 <2.5 3.4
MW2-10-12-20170322 10.0-12.0 3/22/2017 6,300 <2.5 2.8 <250 <0.5 <250 <0.4 <5,000 <5,000 4 4.3
MONITORING WELL BORINGS - SUSPECTED CCR SAMPLES
1NCNCNC
NC 700 2 NC 250,000 10
15A NCAC 2L IMACs (in µg/L)NC 1 NC NC
NC
4 NC NC
15A NCAC 2L Groundwater Standards (in µg/L)NC NC 10 700
Cobalt
Notes:1. SPLP indicates Synthetic Precipitation Leaching Procedure. 2. Results and standards are provided in micrograms per liter (µg/L).
3. IMAC indicates Interim Maximum Allowable Concentrations.
4. Groundwater Standards and IMAC values are from Classifications
and Water Quality Standards Applicable to the Groundwaters of NC
(North Carolina Department of Environmental Quality,
Division of Water Quality, February 2016).5. ft BGS indicates feet below ground surface.6. NC indicates no criteria.7. Yellow shading indicates result exceeds the screening criteria. Results below the reporting limit are not shaded.8. Bold text indicates result exceeds the IMAC criteria. Results below the reporting limit are not in bold text.9. The less than symbol (<) preceding the value indicates the result was
less than the reporting limit.
10. The symbol '--' indicates the sample was not analyzed.
11. CCR indicates coal combustion residuals.
Sample ID Sample Interval (ft BGS)Sample Date
Concentration (µg/L)
Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Calcium Chloride Chromium
GN6215/Duke Eno SPLP 1 of 4
Table 7. SPLP Suspected CCR Analytical Data Former Eno Steam Plant Site Assessment
MW2-6-8-20170322 6.0-8.0 3/22/2017MW2-8-10-20170322 8.0-10.0 3/22/2017
MW2-10-12-20170322 10.0-12.0 3/22/2017
MONITORING WELL BORINGS - SUSPECTED CCR SAMPLES15A NCAC 2L IMACs (in µg/L)
15A NCAC 2L Groundwater Standards (in µg/L)
Notes:1. SPLP indicates Synthetic Precipitation Leaching Procedure. 2. Results and standards are provided in micrograms per liter (µg/L).
3. IMAC indicates Interim Maximum Allowable Concentrations.
4. Groundwater Standards and IMAC values are from Classifications
and Water Quality Standards Applicable to the Groundwaters of NC
(North Carolina Department of Environmental Quality,
Division of Water Quality, February 2016).5. ft BGS indicates feet below ground surface.6. NC indicates no criteria.7. Yellow shading indicates result exceeds the screening criteria. Results below the reporting limit are not shaded.8. Bold text indicates result exceeds the IMAC criteria. Results below the reporting limit are not in bold text.9. The less than symbol (<) preceding the value indicates the result was
less than the reporting limit.
10. The symbol '--' indicates the sample was not analyzed.
11. CCR indicates coal combustion residuals.
Sample ID Sample Interval (ft BGS)Sample Date
32.7 <100 81,200 36.6 --3,900 860 0.38 <2.5 <25<5 <100 1,900 <2.5 --<2,500 300 <0.2 <2.5 <25
<5 <100 6,000 2.9 --<2,500 160 <0.2 <2.5 <25
NC NC NC NC NCNCNCNCNCNC
NC NC 50 1 NC 1001,000 2,000 300 15
PhMagnesiumManganeseMercuryMolybdenumNickelCopper
Concentration in µg/L
Fluoride Iron Lead Lithium
GN6215/Duke Eno SPLP 2 of 4
Table 7. SPLP Suspected CCR Analytical Data Former Eno Steam Plant Site Assessment
MW2-6-8-20170322 6.0-8.0 3/22/2017MW2-8-10-20170322 8.0-10.0 3/22/2017
MW2-10-12-20170322 10.0-12.0 3/22/2017
MONITORING WELL BORINGS - SUSPECTED CCR SAMPLES15A NCAC 2L IMACs (in µg/L)
15A NCAC 2L Groundwater Standards (in µg/L)
Notes:1. SPLP indicates Synthetic Precipitation Leaching Procedure. 2. Results and standards are provided in micrograms per liter (µg/L).
3. IMAC indicates Interim Maximum Allowable Concentrations.
4. Groundwater Standards and IMAC values are from Classifications
and Water Quality Standards Applicable to the Groundwaters of NC
(North Carolina Department of Environmental Quality,
Division of Water Quality, February 2016).5. ft BGS indicates feet below ground surface.6. NC indicates no criteria.7. Yellow shading indicates result exceeds the screening criteria. Results below the reporting limit are not shaded.8. Bold text indicates result exceeds the IMAC criteria. Results below the reporting limit are not in bold text.9. The less than symbol (<) preceding the value indicates the result was
less than the reporting limit.
10. The symbol '--' indicates the sample was not analyzed.
11. CCR indicates coal combustion residuals.
Sample ID Sample Interval (ft BGS)Sample Date
--<25,000--<25,000
--<25,000
NC NC
NC NC
osphorus Potassium

GN6215/Duke Eno SPLP 3 of 4
Table 7. SPLP Suspected CCR Analytical Data Former Eno Steam Plant Site Assessment
MW2-6-8-20170322 6.0-8.0 3/22/2017MW2-8-10-20170322 8.0-10.0 3/22/2017
MW2-10-12-20170322 10.0-12.0 3/22/2017
MONITORING WELL BORINGS - SUSPECTED CCR SAMPLES15A NCAC 2L IMACs (in µg/L)
15A NCAC 2L Groundwater Standards (in µg/L)
Notes:1. SPLP indicates Synthetic Precipitation Leaching Procedure. 2. Results and standards are provided in micrograms per liter (µg/L).
3. IMAC indicates Interim Maximum Allowable Concentrations.
4. Groundwater Standards and IMAC values are from Classifications
and Water Quality Standards Applicable to the Groundwaters of NC
(North Carolina Department of Environmental Quality,
Division of Water Quality, February 2016).5. ft BGS indicates feet below ground surface.6. NC indicates no criteria.7. Yellow shading indicates result exceeds the screening criteria. Results below the reporting limit are not shaded.8. Bold text indicates result exceeds the IMAC criteria. Results below the reporting limit are not in bold text.9. The less than symbol (<) preceding the value indicates the result was
less than the reporting limit.
10. The symbol '--' indicates the sample was not analyzed.
11. CCR indicates coal combustion residuals.
Sample ID Sample Interval (ft BGS)Sample Date
----<2.5 <2.5 <25,000 3,700 0.74 159 <250----<2.5 <2.5 <25,000 7,000 <0.5 3.2 <250----<2.5 <2.5 <25,000 5,400 <0.5 11.8 <250
0.3 NCNCNCNCNCNC
NC 250,000 NC2020 1,000
NC 0.2
NC NC
Vanadium ZincRadium-226 Radium-228 Selenium Silver
NC
Concentration in µg/L
Sodium Sulfate Thallium
GN6215/Duke Eno SPLP 4 of 4
Table 8. TCLP Suspected CCR Analytical Data
Former Eno Steam Plant Site Assessment
MW2-6-8-20170322 6.0-8.0 3/22/2017 <50 1,000 <5 <50 <25 <0.2 <100 <25
MW2-8-10-20170322 8.0-10.0 3/22/2017 <50 570 <5 <50 <25 <0.2 <100 <25MW2-10-12-20170322 10.0-12.0 3/22/2017 ----------------
Notes:1. TCLP indicates Toxicity Characteristic Leaching Procedure.
2. Results and standards are provided in micrograms per liter (µg/L).3. IMAC indicates Interim Maximum Allowable Concentrations.
4. Groundwater Standards and IMAC values are from Classifications and Water Quality Standards Applicable to the Groundwaters of NC
(North Carolina Department of Environmental Quality, Division of Water Quality, February 2016).
5. ft BGS indicates feet below ground surface.
6. NC indicates no criteria.7. Yellow shading indicates result exceeds the screening criteria. Results below the
reporting limit are not shaded.8. Bold text indicates result exceeds the IMAC criteria. Results below the reporting
limit are not in bold text.9. The less than symbol (<) preceding the value indicates the result was less than the
reporting limit.10. The symbol '--' indicates the sample was not analyzed.
11. CCR indicates coal combustion residuals.
Sample ID Sample Interval (ft BGS)Sample Date
Concentration (µg/L)
Arsenic Barium LeadCadmiumChromium
15A NCAC 2L Groundwater Standards (in µg/L)10 700
Selenium SilverMercury
15210
NC15A NCAC 2L IMACs (in µg/L)NC NC
20 201
MONITORING WELL BORINGS - SUSPECTED CCR SAMPLES
NC NCNCNCNC
GN6215/Duke Eno TCLP 1 of 1
Table 9. Sediment Analytical DataFormer Eno Steam Plant Site Assessment
Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Chromium Cobalt Copper Iron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Vanadium Zinc
15,400 6.2 0.68 3,000 32 3,200 14.2 0.3 4.6 620 11,000 400 360 2.2 78.0 300 78 78 0.156 78 4,600
100,000 94 3 44,000 460 46,000 196 6.3 70 9,400 100,000 800 5,200 3.13 1160 4,400 1,160 1,160 2.4 1,160.0 70,000
NC 0.9 5.8 580 63 45 3.0 3.8 0.9 700 150 270 65 1.0 NC 130 2.1 3.4 0.28 6 1,200
SS1 7/21/2015 5,320 ND 6.6 29.3 0.45 ND ND 33.8 12.5 8.4 41,200 7.8 1,050 0.0094 ND 2.7 ND ND ND 72.1 19.1J
SS2 7/22/2015 7,480 ND 4.6 44.9 0.27 ND ND 8.1 5.8 14.2 20,300 12.9 191 0.024 ND 2.3 1.0J ND ND 41.1 24.6J
SS3 7/21/2015 4,210 ND 2.1 47.2 0.22 ND ND 7.7 7.0 12.1 10,500 8.2 213 0.015 ND 2.3 ND ND ND 28.4 23.2J
SS4 7/21/2015 6,770 ND 9.3 118 0.58 ND ND 8.4 7.9 36.9 9,930 22.4 257 0.024J ND 6.3 ND ND ND 42.1 70.2J
SS6 9/28/2015 30,000 ND 16 201 1.3 ND 0.41J 15.2 49.9 45.2 60,800 25.8 4,530 0.18 ND 16.3 3.5J ND ND 74.5 175
SS7 9/28/2015 16,200 ND 4.6 89.1 0.56 6.9J 0.51 15.1 10.5 50.4 15,700 25.6 168 0.42 ND 8.9 13 ND ND 54.9 101
SS8 9/28/2015 14,900 ND 4.1J 75.5 0.72 4.6J ND 36.9 12.4 26.6 33,700 14.9 713 0.055 ND 5.3J ND ND ND 88.3 54.5J
SS9 9/29/2015 11,800 ND 1.9J 70.1 0.41 ND ND 9.5 14.5 15.8 17,300 9.8 663 0.034 ND 3.9 ND ND ND 47.8 ND
SS10 9/29/2015 12,400 ND 3.5 66.5 0.71 ND ND 3 11 10 14,000 7.8 575 0.0087J ND 7.4 ND ND ND 23.3 39.7
Notes:
1. mg/kg indicates milligrams per kilogram.
2. ft BGS indicates feet below ground surface.
3. NC indicates no criteria.
4. PSRGs are from the NC Department of Environmental Quality, Inactive Hazardous Sites Branch, October 2016.
5. PSRGs are from the Inactive Hazardous Sites Branch Preliminary Soil Remediation Goals Table, July 2013.
6. PSRGs provided for Chromium in the table is for Chromium (VI).
7. Yellow shading indicates exceedance of the residential PSRG. Results below the reporting limit are not shaded.
8. Bold text indicates exceedance of the industrial PSRG. Results below the reporting limit are not in bold text.
9. Underlined text indicates exceedance of the protection of
groundwater PSRG.
10. ND indicates not detected above method detection limit.
11. J indicates result is an estimated value.
Residential PSRG
Industrial PSRGProtection of Groundwater PSRG
Sample ID Sample Date
Concentration (mg/kg)
GN6215/Duke Eno Sediment Page 1 of 1
Table 10. Surface Water Analytical Data
Former Eno Steam Plant Site Assessment
Aluminum
(at pH 6.5-9.0)
Dissolved
Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Calcium Chloride Chromium
(total)Cobalt Copper Fluoride Hardness,
Total Iron Lead Magnesium Manganese
SW1 7/21/2015 8.8J 39.4 ND 0.41J 18.4 ND 13.6 ND 11,600 7.8 0.53 0.14J 0.49J 0.15 43,800 82.1 ND 3,590 70.3
SW2 7/22/2015 358 183 ND 0.72 22.1 ND 11.1 ND 10,100 7.3 1.1 0.34J 1.1 0.15 37,700 1,360 0.5 3,040 102
SW3 7/21/2015 135 147 ND 0.72 25.5 ND 14.5 ND 11,900 9.4 0.41J 0.69 0.59J 0.15 45,000 39.5J 0.23 3,680 452
SW4 7/21/2015 88.3 99 ND 1.9 11.2 ND 13.2 ND 7,620 7.8 0.37J ND 0.49J 0.12 29,400 276 0.19 2,510 36.6
SW5 7/22/2015 9.8J 3.9J ND 0.55 13.4 ND 15.3 ND 9,390 8.5 0.38J ND 0.53J 0.12 35,500 126 0.076J 2,930 190
SW6 9/28/2015 54.6 66 ND 0.47J 27 ND 14.1 ND 11,500 8.1 0.22J 0.30J 0.71J 0.12 44,300 1,810 0.12 3,760 686
SW7 9/28/2015 52.4 57.4 ND 0.27J 18.5 ND 16.4 ND 10,300 7.5 0.42J 0.25J 0.86J 0.12 38,000 235 0.085J 3,010 129
SW8 9/28/2015 17.1 9.4J ND 0.20J 18.5 ND 16.4 ND 10,400 7.7 0.47J ND 0.74J 0.11 38,600 134 0.057J 3,040 30.5
Notes:
1. Results are provided in micrograms per liter (µg/L) with the following exceptions:
Chloride, fluoride, nitrate, total dissolved and total suspended solids, sulfate, and sulfide concentrations are in micrograms per liter (mg/L).
Mercury concentrations are in nanograms per liter (mg/L).
pH is in standard units.
2. Samples originally collected by Stantec and analyzed by Pace Labs.
3. ND indicates not detected above method detection limit.
4. J indicates result is an estimated value.
Sample ID Sample
Date
Concentration (µg/L)
GN6215/Duke Eno SurfaceWater 1 of 2
Table 10. Surface Water Analytical Data
Former Eno Steam Plant Site Assessment
Mercury Molybdenum Nickel Nitrate
(as N)
Oil and
Grease pH Potassium Selenium Silver Sodium
Solids,
total
dissolved
Solids, total
suspended Strontium Sulfate
Sulfide -
Hydrogen
sulfide
Thallium Tin Titanium Vanadium Zinc
SW1 7/21/2015 0.926 0.15J 0.23J 0.29 ND 7.2 ND ND ND 7,510 72 ND 86.8 6.5 ND ND ND ND 0.45J ND
SW2 7/22/2015 2.54 0.21J 0.40J 0.085 ND 7.5 ND ND ND 6,860 62 7.1 76.5 7.2 ND ND ND 6.7 2.3 3.0J
SW3 7/21/2015 0.897 0.15J 0.23J 0.029 ND 6.9 ND ND ND 8,130 71 3.9 91.9 5.1 ND ND ND ND 1.2 ND
SW4 7/21/2015 1.61 0.24J 0.22J ND ND 9.3 ND ND ND 7,100 53 5.8 60.3 5.9 ND ND ND ND 1.2 ND
SW5 7/22/2015 0.513 0.10J ND ND 2.1J 7.3 ND ND ND 6,880 56 ND 74.9 ND 5.5 ND ND ND 0.45J ND
SW6 9/28/2015 1.23 0.16J 0.37J 0.13 ND 6.9 ND ND ND 7,590 68 15.4 95.1 5.8 ND ND ND ND 0.45J 3.7J
SW7 9/28/2015 1.11 0.14J 0.34J 0.13 ND 6.7 ND ND ND 6,820 68 ND 74.9 9.2 ND ND ND ND 0.43J ND
SW8 9/28/2015 1.16 0.14J 0.42J 0.13 ND 6.8 ND ND ND 6,800 62 ND 76.1 9.7 ND ND ND ND 0.38J 3.1J
Notes:
1. Results are provided in micrograms per liter (µg/L) with the following exceptions:
Chloride, fluoride, nitrate, total dissolved and total suspended solids, sulfate, and sulfide concentrations are in micrograms per liter (mg/L).
Mercury concentrations are in nanograms per liter (mg/L).
pH is in standard units.
2. Samples originally collected by Stantec and analyzed by Pace Labs.
3. ND indicates not detected above method detection limit.
4. J indicates result is an estimated value.
Concentration (µg/L)
Sample
ID
Sample
Date
GN6215/Duke Eno SurfaceWater 2 of 2
Table 11. By Product Analytical DataFormer Eno Steam Plant Site Assessment
Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Chromium Cobalt Copper Iron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Vanadium Zinc
15,400 6.2 0.68 3,000 32 3,200 14.2 0.3 4.6 620 11,000 400 360 2.2 78.0 300 78 78 0.156 78 4,600
100,000 94 3 44,000 460 46,000 196 6.3 70 9,400 100,000 800 5,200 3.13 1160 4,400 1,160 1,160 2.4 1,160.0 70,000
NC 0.9 5.8 580 63 45 3.0 3.8 0.9 700 150 270 65 1.0 NC 130 2.1 3.4 0.28 6 1,200
BP3 7/21/2015 --ND 33.2 357 1.6 3.2 0.27 7.5 5.5 29.8 9,180 66.8 164 0.15 1.2 9 2.9 0.08 ND 17.7 70.9
BP4 7/21/2015 --ND 32.2 83.3 0.42 ND ND 5.8 1.7 24.9 16,100 13.3 30.5 0.063 1.4 3.5 2.0 ND ND 20.8 ND
BP8 9/29/2015 --ND 30.8 500 2 7 0.12J 8.3 5.9 22.5 10,300 12.4 93 0.13 ND 11 2.3 ND 0.81J 16.2 16.3J
BP9 9/28/2015 --ND 61.2 513 1.6 6.6 0.35 14 8.1 108 21,200 51.5 275 0.59 3.5 15.1 3.8 0.096 0.84J 30.2 168
BP10 9/29/2015 --ND 26.1 295 1.7 4.4 0.12J 9.1 6.0 23.7 11,300 15.7 122 0.088 1.6J 9.2 2.1 0.15J ND 21 17.2J
BP11 9/29/2015 --ND 18.1 519 1.2 8.9 2.7 47.5 5.9 117 25,300 266 719 2.00 ND 20.8 1.4J 0.3 ND 15.2 572
Notes:
1. mg/kg indicates milligrams per kilogram.
2. ft BGS indicates feet below ground surface.
3. NC indicates no criteria.
4. PSRGs are from the NC Department of Environmental Quality, Inactive Hazardous Sites Branch, October 2016.
https://ncdenr.s3.amazonaws.com/s3fs-public/Waste%20Management/DWM/SF/IHS/guidance/SoilTable%20OCTOBER%202016%20-%20Finalr3-header%20change.pdf
5. PSRGs are from the Inactive Hazardous Sites Branch Preliminary Soil Remediation Goals Table, July 2013.
6. PSRGs provided for Chromium in the table is for Chromium (VI).
7. Yellow shading indicates exceedance of the residential PSRG. Results below the reporting limit are not shaded.
8. Bold text indicates exceedance of the industrial PSRG. Results below the reporting limit are not in bold text.
9. Underlined text indicates exceedance of the protection of
groundwater PSRG.
10. ND indicates not detected above method detection limit.
11. J indicates result is an estimated value.12. -- indicates analyte was not measured by the laboratory
Industrial PSRGProtection of Groundwater PSRG
Sample ID Sample Date
Concentration (mg/kg)
Residential PSRG
Page 1 of 1
Copyright:© 2013 National Geographic Society, i-cubed
Site Location
Former Eno Steam StationPleasant Green Rd, Durham, NC
N:\Duke\Eno\GIS\USGS Topo Site Location.mxd; swalker; 18-Sep-2017; 650 0 650325 Feet
³
Figure1Raleigh, NC September 2017Pleasant Green RdEno RiverUS H
w
y

7
0
Notes1. Parcel information obtained from Orange County GIShttp://server2.co.orange.nc.us/OrangeNCGIS/default.aspx
Legend
Site Boundary
Former Eno Steam Station
!(
!(
!(
!(!(
!(
BP9
BP8BP4
BP3
BP11
BP10
Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics,
CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS UserCommunity
Historical Sampling Locations
Byproduct Samples
Former Eno Steam Station
Pleasant Green Rd, Durham, NC
M:\Duke\Eno\GIS\REC - Figure X - Historical Sample Locations.mxd; AGreune; 20-Sep-2017; 500 0 500250 Feet
Figure
2Raleigh, NC September 2017
Notes
1. Samples were collected in 2015.
2. Parcel information obtained from Orange County GIS
http://server2.co.orange.nc.us/OrangeNCGIS/default.aspx
Pleasant
Gree
n
RdEno R
iver
!(Byproduct Sample Location
Site Boundary
US
H
w
y

7
0
E
!(
!(
!(
!(
!(
!(
!(!(SW8SW7
SW6
SW5
SW4
SW3
SW2
SW1
Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics,
CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS UserCommunity
Historical Sampling Locations
Surface Water Samples
Former Eno Steam Station
Pleasant Green Rd, Durham, NC
M:\Duke\Eno\GIS\REC - Figure 3 - Historical Sample Locations-SW.mxd; AGreune; 20-Sep-2017; 500 0 500250 Feet
Figure
3Raleigh, NC September 2017
Notes
1. Samples were collected in 2015.
2. Parcel information obtained from Orange County GIS
http://server2.co.orange.nc.us/OrangeNCGIS/default.aspx
Pleasant
Gree
n
RdEno R
iver
!(Surface Water Sample Location
Site Boundary
US
H
w
y

7
0
E
!(
!(
!(
!(
!(!(
!(
!(
!(SS9
SS8
SS7SS6SS4
SS3
SS2
SS1
SS10
Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics,
CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS UserCommunity
Historical Sampling Locations
Sediment Samples
Former Eno Steam Station
Pleasant Green Rd, Durham, NC
M:\Duke\Eno\GIS\REC - Figure 4 - Historical Sample Locations-SS.mxd; AGreune; 20-Sep-2017; 500 0 500250 Feet
Figure
4Raleigh, NC September 2017
Notes
1. Samples were collected in 2015.
2. Parcel information obtained from Orange County GIS
http://server2.co.orange.nc.us/OrangeNCGIS/default.aspx
Pleasant
Gree
n
RdEno R
iver
!(Sediment Sample Location
Site Boundary
US
H
w
y

7
0
E