20060_Townsend_Siler_City_Receptor_Survey_20161021

DUNCKLEE
& DUNHAM

MAILING ADDRESS – POST OFFICE BOX 33366 – RALEIGH, NORTH CAROLINA 27636
NORTH CAROLINA BOARD OF EXAMINERS FOR ENGINEERS AND SURVEYORS LICENSE C-3559
NORTH CAROLINA BOARD FOR LICENSING OF GEOLOGISTS LICENSE C-261
NC DENR REGISTERED ENVIRONMENTAL CONSULTANT NUMBER 00061
DD ENVIRONMENTAL CONSULTING & ENGINEERING
511 KEISLER DRIVE – SUITE 102
CARY, NORTH CAROLINA 27518
OFFICE: (919) 858–9898
WWW.DUNCKLEEDUNHAM.COM

LETTER OF TRANSMITTAL

To: Sharon Eckard
North Carolina Brownfields Program
Copy to: Shirley Liggins
From: Dave Duncklee
Date: October 21, 2016
Reference: Mountaire Siler City Plant Site
Siler City, Chatham County, North Carolina
BF# 20060-16-019

The following document is attached:

Draft Letter / Report Phase I ESA Report

Laboratory Report Certification Forms

Contract or Change Order Other: Receptor Survey as pdf

For the following action:

For Your Review / Information For Your Signature & Return

As You Requested Other: CD-ROM will be mailed to Shirley

Comments:

Page 1 of 4
Rev. 06/05/02
General Instructions
1.)
2.)
3.)
Site:Mountaire Siler City Plant Site
Address:1100, 1101, 1200 East Third Street
City:Siler City
County:Chatham County
Property Characteristics
Surrounding Properties
X North
X South
X East Commercial
X West Commercial; Residential
The 'Siler City Zoning Map' and the 'Town of Siler City Future Land Use Map' is attached in Appendix A.
Size of Property (acres)
% of property that is wooded
% of property that is grass area
Applicable to Site
(DENR Use Only)
Surrounding Properties
Zoning/Land Use Current Usage Proposed Usage
BROWNFIELDS AREA RECONNAISSANCE AND RECEPTOR SURVEY GUIDANCE FORM
Provide Information for the following potential receptors Current Usage Proposed Usage
This form was created to clarify and simplify preparing a receptor survey for a brownfield site. The form was designed to minimize unnecessary delays in
processing brownfield applications. This is a guidance document only and Potential Developers may complete and submit their own receptor survey, if they desire.
The shaded fields on the form marked “Applicable to Site” will be determined by the DENR Brownfields Project Manager on a site by site basis.
The distances to potential receptors from the Property boundary will be determined by the DENR Brownfields Project Manager on a site by site basis.
Distances are measured from the site Property Boundary unless otherwise indicated by the DENR Brownfield’s Project Manager.
% of property that is agricultural crops
% of property that is barren
% of property that is used for commercial or industrial usage
including paved areas
% of property that is scrub/shrub
% of property that is open land
Heavy Industrial; Highway
Commercial; Residential
0
0
60
Highway Commercial; General
Business; Residential
Light Industrial; Highway
Commercial; Residential
Highway Commercial;
Residential
Industrial; Commercial; Residential
Industrial; Commercial; Residential
33.19 33.19
30
5
0
5
30
5
0
0
0
0
65
Page 2 of 4
Rev. 06/05/02
Potential Receptors - include depth to top, construction material and diameter of the utilities, if available
Distance Direction Depth
Approx. 200 ft South
Approx. 1,000 ft Southwest
X
Is a school or daycare center
within 1000 ft of the Property
boundary?
Y Yes 9/27/2016
X
Is a storm sewer within 1000 ft of
the Property boundary?Y Yes 9/27/2016
X
Is a sanitary sewer within 1000 ft
of the Property boundary?Y Yes 9/27/2016
X
Is a septic system leach field
within 1000 ft of the Property
boundary?N Yes 9/27/2016
X
Is a water line main within 1000
ft of Property boundary?Y Yes 9/27/2016
X
Is a natural gas line main within
1000 ft of the Property boundary?Y Yes 9/27/2016
X
Is a buried telephone/ cable
main within 1000 ft of the
Property boundary?
9/27/2016
X
Is a buried electrical cable main
within 1000 ft of Property
boundary?Y Yes 9/27/2016
Local Water Supply
Public:Siler City Private: Three water supply wells located on the processing plant site
Potable Water Supplier Name:Siler City
Potable Water Supply Source:
Distance:Approximately 2.5 mi Direction:North
Potable Water Source Intake:Town of Siler City Water Treatment Plant
Distance:Approximately 2 mi Direction:North-northwest
Is a basement or subsurface
foundation within 1000 ft of the
Property boundary?X Y Yes 9/27/2016 Unknown; basement for residences
(Photograph 1 & 2, Appendix B)
Field
Verifie
d
Date
Verified Complete and attach map as appropriate
Applicable to Site
(DENR Use Only)
Provide Information for the
following potential receptors Y/N
A natural gas line main is present along East Eleventh Street and
East Third Street (PSNC Energy Map, Appendix C). A natural gas
line marker was observed on the northern side of the processing
plant (Photograph 9, Appendix B).
Overhead powelines and telephone lines are common within 1,000
ft of the property (Photograph 10 & 11, Appendix B).
Sanitary sewers traverse parts of the site and service the
surrounding neighborhoods (Photograph 6 & 7, Appendix B; Water
and Sewer Map, Appendix C).
Kerbside inlets and drop inlets are common within 1,000 ft of the
property (Photograph 4 & 5, Appendix B; Survey drawings,
Appendix C).
Children First Learning Center, LLC is located at 800 Sheffield Dr., approx
850 ft southwest of the site (Photograph 3, Appendix B; Google Map
image, Appendix C).
Unknown
Underground cable utility boxes and markers are present within
1,000 ft of the property (Photograph 12, Appendix B).
Rocky River (Lower)
Sewer lines service all areas within 1,000 ft of the property (see
Water and Sewer Map, Appendix C)
Water mains are present to the north of the site, parallel with East
Eleventh Street, and to the south of the site, parallel with East
Raleigh Street (Photograph 8, Appendix B; Water and Sewer Map,
Appendix C).
Page 3 of 4
Rev. 06/05/02
Water Supply Wells
Distance Direction Depth
X
Is a public water supply well
within 1 mile of the Property
boundary?N No 9/28/2016
X
Is a irrigation supply well within
1/2 mile of the Property
boundary?N No 9/28/2016
X
Is a private water supply well
within 1/2 mile of the Property
boundary?
Y Yes 9/27/2016
X
Is a monitoring well within 1500
ft of the Property boundary?
Y Yes 9/27/2016
Water Bodies on Property
X
Is water body naturally
developed or man made?
X List the uses of the water body Stormwater drainage ditch
X What is the source of the water
for the water body Stormwater
X
What is the nature of the bottom
of the water body (e.g., rocky or
concrete bottom, drainage ways
or impoundments)Primarily sandy/gravelly drainage way
X
Are there any wetlands present
on the property?
No
Provide Information for the
following potential receptors Y/NApplicable to Site
(DENR Use Only)
Field
Verifie
d
Date
Verified
Applicable to Site (DENR Use Only)
Provide Information for the
following potential receptors Comments
The NCDEQ does not show records of monitoring wells (MWs)
within 1,500 ft of the property. Duncklee & Dunham located 4 MWs
at the abandoned gas station to the northwest, 2 MWs on the Quick
Way Mart gas station at the intersection of US64 and East Third
Street, and 2 MWs on the former motor vehicle dealership property
to the east (Photograph 13 through 15, Appendix B).
There are no permanent water bodies on the property. A non-perennial stormwater drainage ditch is
present on the southern side of the parcel at 1100 East Third Street (Office), oriented roughly east-
west (Photograph 16, Appendix B).
Complete and attach map as appropriate
Three water supply wells are present on the processing plant site at
1101 East Third Street.
Duncklee & Dunham contacted the Chatham County Health
Department and North Carolina Department of Environmental
Quality. The Health Department was not aware of any public water
supply wells, irrigation supply wells or monitoring wells within the
specified distances from the property boundary. See the Source
Water Assessment Program Report and NC Public Water Supply
Map (Appendix D)
Page 4 of 4
Rev. 06/05/02
Surface Water Body
Distance Direction Depth
X
Are there surface waters located
within 1000 ft of the Property
boundary?
N
Additional water bodies, if needed
Additional Requests/ Observations

Type Complete and attach map as appropriate
Applicable to Site
(DENR Use Only)
Provide Information for the
following potential receptors Comments
Applicable to Site (DENR Use Only)
Provide Information for the
following potential receptors Y/N Name

Appendix A
L o v e s C r e e k
T i c k C r e e k
B l o o d R u n C r e e k
M
eado
w Creek
B
r
u
s
h

C
r
e
e
k
L a c y C r e e k
L i t t l e B r u s h C r e e k
W
e
l
c
h

C
r
e
e
k
V
a
r
n
ell
C
r
e
e
k
N i c k C r e e k
R e e d y F o r k
D r y C r e e k
Rocky River
Rocky River Reservoir
US 421 N
US 64 W
U S 4 2 1 S
A I R P O R T R D
OLD US 421 N
S I L K H O P E R D
OL
D U
S 42
1 S
W THIRD ST
ALSTON BRIDGE RD
C O L E R I D G E R D
R I V E S C H A P E L C H U R C H R D
S I L E R C I T Y G L E N D O N R D
A R T H U R T E A G U E R D
I K E B R O O K S R D
P O E R D
MC LA U R I N RD
W
R
E
N
N
S
M
I
T
H

R
D

SAM FIELDS RD
S I L E R C I T Y S N O W C A M P R D
J E S S I E B R I D G E S R D
MT VERNON SPRINGS RD
E ELEVENTH ST
OAKLEY CHURCH RD
ED CLAPP RD
M T V E R N O N H I C K O R Y M N T N R D
HAL CLARK RD
G L O S S O N R D
M O O N S C H A P E L R D
P
I
N
E
Y

G
R
O
V
E

C
H
U
R
C
H

R
D

E R A L E I G H S T
B I S H R D
LAMBERT CHAPEL RD
E T H I R D S T
O L D P L A N K R D
W A D E P A S C H A L R D
JOE BROWN RD
SMITH HUDSON RD
H A R O L D A N D R E W S R D
DORSETT RD
R U F U S B R E W E R R D
S SECOND AVE
C A R O L I N A H I L L R D
P
R
O
G
R
E
S
S

B
L
V
D
N C
HATH
A
M AVE
STAGE COACH RD
F O U S T R D
W R A L E I G H S T
ZION CHURCH RD
L O R I L N
S CHATHAM AVE
G
E
E
S

G
R
O
V
E

R
D

D A V I S R D
N G
A
R
DE
N AVE
N SECON
D AVE
W F I F T H S T
GILMORE LODGE RD
CARTER BROOKS RD
G R A D Y S I L E R R D
S T O C K Y A R D R D
W A R D R D
HAMP STONE RD
JIM MOODY RD
BOB DIXON RD
PEARLEMAN TEA
G
UE RD
POPLAR TRL
GILLILAND RD
P R I C E M I T C H E L L R D
W I L L B E L N
N FIR AVE
S A I R P O R T R D
N D
O
G
W
O
O
D A
V
E
E F O U R T H S T
W
E
L
L
A
W
A
Y
L
N
L A N E J O R D A N R D
W S I X T H S T N
G
L
E
N
N A
V
E
W E L K S T
E L L I N G T O N R D
N THIRD AVE
S CHATHAM AVE EXT
P O N Y F A R M R D
BUCK GUNTER RD
W ELEVENTH ST
S SECOND AVE EXT
J O H N E M E R S O N R D
B B R A Y R D
E D W A R D S R D
WATER PLANT RD
BILL
Y FITT
S R
D
JI
M
P
AI
G
E

R
D K N O L L R I D G E L N
N IVEY AVE
T
W
O GATE RD
CAMPUS DR
E NINTH ST
15TH ST
B
R
O
W
E
R
R
D

LAKE DR
CLYDE DAVIS RD
SILK HOPE GUM SPRINGS RD
ARCHIE JOHNSON RD
P I N E F O R E S T S O U T H D R
ASHLEY CT
N O R T H A V E
H U D S O N R D
ONEAL DR
E FIFTH ST
W S E C O N D S T
P I N E V I E W R D
12TH ST
S

S
I
X
T
H
A
V
E

E D E N H I L L S R D
OXFORD ST
S S EDWARDS RD
CLARK LN
G R E E N S B O R O A V E
S M O K Y H O L L O W T R L
B
E
L
L
E LN
CHANDLER LN
GEORGE HUDSON RD
K E V I N R D
J A V A N S M I T H R D
M A R T I N L U T H E R K I N G J R B L V D
GRAHAM MOORE RD
COLLEGE ST
K E N T R D
A L E X W A T S O N R D
ROMINE PI KE RD
E S E C O N D S T
V I C T O R Y L N
T E C H N O L O G Y W A Y
E S I X T H S T
DRIFTWOOD DR
NICK CREEK LN
PINE FOREST DR
AUTUMN DR
C
E
N
T
E
R

D
R

ELDER RD
GEORGE BROOKS DR
BEECHWOOD LN
W TENTH ST
C A N T E R B U R Y L N
C O P P E R H E A D L N
GEORGE ST
LUSITANO LN
OLD WALDEN RD
VESTAL RD
KIMBERLY LN
W H I T E T A I L L N
W F O U R T H S T
A V I A T I O N D R
LONG ACRE RD
N HAMPTON ST
JO
N
E
S R
D
B
R
A
D
F
O
R
D

R
O
G
E
R
S

L
N

CAMBRIDGE ST
F E A S T E R R D
HAROLD HART RD
SILK HOPE LIBERTY RD
E
R
V
I
N

H
E
A
D
E
N

R
D

YORK ST
R A I N B O W D R
E ELK ST
V I N E Y A R D R D G
P A T T E R S O N S T
STONE ST
FA
Y
ETTEVILLE AV
E
P I N E C O U R T D R
I S A A C DR
LIGHTHOUSE CHURCH RD
M
E
A
D
O
W
C
R
E
E
K
R
D
S C
E
D
A
R A
V
E
N F
O
U
RTH A
VE
D
U
E
T

D
R

SUNSET DR
H Y A T T C T
S THIR
D AV
E
FO
NTA
N
A CIR
R O C K Y T O P T R L
14TH ST
E T H E L R O G E R S W A Y
M
ELVIN CLA
R
K R
D
B A I L E Y W A Y
NELSON ST
M A N E S S W A Y
F E L LO W S HI P CHU R CH R D
L A RKIN G T ON D R
C H E S T N U T S T
N RICHARDSON RD
HO RSE HA V E N L N
D E A N E B E A V E R R D
HOWARD GILLILAND RD
S TENTH AVE
DEVINE WAY
INGLE ST
CRYSTAL LN
HILL ST
PETTY RD
R
E
D
D
I
S
H

D
R

SHEFFIELD DR
TANGLEWOOD DR
L O G C A B I N D R
F A I R F A X S T
KIR
K
M
A
N
S F
O
R
D R
D
J A C K E L K I N S R D
S D
O
G
W
O
O
D A
V
E
ZEB FERGUSON RD
WOMBLE ST
F A I R F A X S T
S F I R A V E
SETH TEAGUE RD
S A N T E F E C I R
P I N E L A K E D R
S I L E R C I T Y F I R E T O W E R R D
P A P O U L N
TRINITY ST
JOHN SNIPES RD
RUSSELL WEBSTER RD
SUNVIEW DR
FAWNS REST R D
C D THOMAS RD
N F I F T H A V E
P E A R D R
J U S T I C E D R
H A Y B A R N L N
N

S
E
C
O
N
D

A
V
E

E
X
T

E D O L P H I N S T
J
A
N
D
J
D
R
M
ES
S
E
R D
R
J O S H U A
LYNBROOK RD
PARKWOOD DR
JORDAN GROVE RD
HILLBROOK BLVD
M O O R E S T
A
C
C
E
S
S

U
S
4
2
1 N E
XIT 17
1
DARIANS WAY
F
A
I
R
W
A
Y

D
R

RIDGE CT
ACCESS S CHATHAM AVE EXT 168
GREENTREE LN
W O O D L A N D D R
S EVE
R
G
R
EE
N A
V
E
LO LA DR
A W BUCKNER RD
H
O
P
E

F
A
R
M

R
D

L
O
V
E
S
C
R
E
E
K

C
H
U
R
C
H

R
D

13TH ST
GREENHILL DR
E CARDINAL ST
S Y C A M O R E L A K E R D
WESTMONT DR
PALIMINO DR
N S I X T H A V E
S H A N N O N D R
W E S T G R E E N H I L L R D
P
I
N
E
Y
B
L
U
F
F R
D

C R O S S S C H O O L R D
HENRY BRAY DR
D
O
G
G
O
N
E R
D
RED OAK DR
BENJIE WILLIAMS RD
COLONY ST
C
O
BLE BOYS DR
M E D I C A L P A R K D R
O L Y M P I A S T
PASTURE LN
DIXIE D
R
FR
AZIE
R STO
R
E R
D
W O O D Y L N
E LB ERT JOHN S ON R D
W DOLPHIN ST
PAIGE BLVD
CULBERSON DR
H A P P Y S W A Y
SILER BUSINESS DR
AMERICAN DREAM LN
J O E R O B I N S O N R D
C A P F I E L D S D R
LAKEWOOD DR
CL I F T W OOD D R
P E R R Y A V E
N

T
E
N
T
H

A
V
E

S O U T H P O R T S T
CRESTVIEW RD
W NINTH ST
RAY DIXON RD
SANDSTONE DR
C H A L E T T R L
CANDLEWOOD CIR
MAULDIN DR
D O W D S T
S S E V E N T H A V E
E B E A V E R S T
P I K E M E M O R Y L N
HEADEN RD
J E A N S T
V
I
L
L
A
G
E
L
A
K
E

R
D

ELISEA
SILER ST
ASHTON CT
HINSHAW ST
A
C
C
E
S
S

U
S

4
2
1

S

E
X
I
T

1
7
1
P O N D A R O S A R D
C A M E L B A C K R D
W A T E R F O R D S T
N E W L A N D S T
ACCESS/PINEY GROVE CH RD/US 421 N/EXIT 174
CENTRAL AVE
W
H
I
T
E

O
A
K

D
R

N H
OLL
Y AVE
R O S S A V E
HAROLD HACKNEY RD
W E I G H T H S T
BREWER DR
S I L K H O P E L I N D L E Y M I L L R D
H O D G E S T
HILLTOP DR
W PARK DR
R I D G E C R E S T D R
SUMMER DR
WALNUT H I LL TRL
R UBY L N
RED SUNSET PL
J R E D W A R D S L N
ADDIE ALSTON RD
E FIN C H ST
WHITE DEER PATH
MAPLEWOOD DR
ROLAND MARSH RD
V I V I A N B E T T Y P L
W I L D L I F E R D
L E E D I X O N R D
THIS L DO LN
NEST EGG FARM RD
WINCREST LN
E TENTH ST
LUCILLE CHEEK DR
G L A S C O W D R
J
O
H
N
S
O
N

A
V
E

CA
R
OLINA AVE
W S E V E N T H S T
I R E N E L N
C A M E R O N D R CRAVEN ST
A P R I L L O O P
SEDGEFIELD DR
C O L O N I A L P A R K R D
WILLETT RD
HANKS DR
LEE ST
C O L C H E S T E R A V E
CE LEB R I TY D A I R Y W A Y
W E S T S H A N N O N R D
S T A G E CO A C H T R L
D E E R R I D G E R D
ST ANDREWS LN
NORTH HILLCREST RD
S A N T E K R D
COUNTRY CLUB DR
D A I R Y V I E W R D
MOODY LOOP RD
MANLEY EDWARDS DR
DAN HENRY SILER RD
D O D G E S T
E
L
K

L
N

A L S T O N A V E
W
A
T
KIN
S D
R
MISTAKE W
A
Y
S I L E R C I T Y I N D U S T R I A L P A R K
AC
CE
SS S CHATHAM AVE EXT EXIT 168
S I L E R C R O S S I N G
RICKY RD
ACCESS/US 421N/PINEY GROVE CH RD/EXIT 174
C H A R L E S S T
J I M G I L L I L A N D R D
MATTHEWS DR
FORREST TRL
DRE
W
S HILL R
D
PINEWOOD DR
M A T T H E W S S T
S P R I N G A V E
N EVER
G
R
EE
N A
V
E
N A N A S W A Y
M
C
P
H
E
R
S
O
N
L
N
WALMART SUPERCENTER
S H E P H E R D A V E
CARVER A
VE
QUARTET RUN
C
O
T
T
A
G
E

G
R
O
V
E

A
V
E
T R I P P C O T T A G E S D R
PINE HILL DR
FRIENDSHIP LN
SUNR ISE PL
A
M
Y

L
N
H J WILLIAM S RD
S
U
L
LI
V
A
N

D
R

HIGH MEADOWS WAY
H
E
A
V
E
N
S
M
A
N
N
A C
H
U
R
C
H
R
D

AUGUSTA LN
M O O N R I S E M E A D O W D R
CLARENCE JORDAN RD
S W E E T P E A L N
M
EDINAH LN
O A K W O O D S T
B R O O K W O O D D R
OLYMPIC LN
F
L
E
T
C
H
E
R
SIL
E
R

R
D

S HILLCREST DR
ROCKER WAY
C E R A S I C I R
ANGEL DR
TOMMY MOODY DR
OAKWOOD CEMETERY RD
F
O
O
D

L
I
O
N

P
L
A
Z
A
DONS DR
AL D AVIS RD
BROWN POND RD
S I N G I N G S O U N D W A Y
H O R A C E G O L D S T O N D R
HARDWOOD TRL
SCOTTS LN
E S E V E N T H S T
C O L E M A N M H P
SPRINGTIME PL
CAMELIA AVE
N BIR
CH A
VE
E M M A H I L L D RF C B LN
CREST CT
A C CE S S A C C E S S
HOPES CHASE DR
J
O
H
N
S CIR
D R I F T W O O D D R
W
I
L
L
I
A
M

G
O
I
N
S

D
R

O
A
K
M
O
N
T
L
N

S
A
M

D
IX
O
N

R
D

P A U L A L S T O N D R
C R E A S O N S D R
CHURCH ST
ZACKS WAY
H
A
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ACCESS US 421 S EXIT 171
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SILER CITY ZONING MAP
0 1 20.5 Miles
Legend
Railroads
US HIGHWAY
STATE ROAD
STATE HIGHWAY
OTHER
Waterlines
Waterbodies
Town Limits
Parcel Boundaries
Zoning
A-R
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H-C
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R-10-C
R-20
R-6
R-6-C
Disclaimer:The information for this and other maps was prepared from the Geographic Information System data of the Chatham County GIS Department in conjunction with the county'smunicipalities. The County of Chatham, its employees, agents and personnel, make no representation, warranty, or certification, as to its accuracy, and in particular,its accuracy as to labeling, dimensions, property boundaries, zoning, allowable uses, or placement or location neither of any map features thereon; nor to the accuracy of any other information contained thereon. Independent verification of all maps and data should be obtained by the users of the data. Map produced August 2016 by Chatham County GIS Department.
O
August 2016
£¤64
£¤64
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Town of Siler CityFuture Land Use Map
Adopted August 2003Amended March 2014
GRES
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US 421 N
C A R O L I N A H I L L R D
HAL CLARK RD
S A M F I E L D S R D
L O R I L N
M C L A U R I N R D
DORSETT RD
E L M E R K E C K R D
S I L K H O P E R D
POPLAR TRL
W I L L B E L N
A I R P O R T R D
W A R D R D
P R I C E M I T C H E L L R D
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Appendix B

PHOTOGRAPHIC LOG

Client Name:
Mountaire Farms of North Carolina Corp
Site Location:
Mountaire Siler City Brownfields Site; Siler City, North
Carolina
Project No.
201691
Photo No.
1
Date:
09/27/16

Direction of Photo:

West
Description:

Basement at residential
property located at 707
Sheffield Drive,
approximately 1,000 ft
southwest of the site.

Photo No.
2
Date:
09/27/16

Direction of Photo:

Southwest
Description:

Basement at residential
property located at
1002 East Raleigh
Street, approximately
200 ft south of the site.

PHOTOGRAPHIC LOG

Client Name:
Mountaire Farms of North Carolina Corp
Site Location:
Mountaire Siler City Brownfields Site; Siler City, North
Carolina
Project No.
201691
Photo No.
3
Date:
09/27/16
Direction of Photo:

Southeast
Description:

Children First Learning
Center.

Photo No.
4
Date:
09/27/16

Direction of Photo:

West
Description:

Kerbside stormwater
drop inlet on East
Eleventh Street.

PHOTOGRAPHIC LOG

Client Name:
Mountaire Farms of North Carolina Corp
Site Location:
Mountaire Siler City Brownfields Site; Siler City, North
Carolina
Project No.
201691
Photo No.
5
Date:
09/27/16

Direction of Photo:

East
Description:

Stormwater drop inlet
located in the road
verge at the intersection
of East Eleventh Street
and East Third Street.

Photo No.
6
Date:
09/27/16

Direction of Photo:

South
Description:

Sanitary sewer manhole
and cleanout pipe on
office parcel.

PHOTOGRAPHIC LOG

Client Name:
Mountaire Farms of North Carolina Corp
Site Location:
Mountaire Siler City Brownfields Site; Siler City, North
Carolina
Project No.
201691
Photo No.
7
Date:
09/27/16

Direction of Photo:

North
Description:

Sanitary sewer manhole
(foreground) in
residential
neighborhood on North
Tenth Avenue.

Photo No.
8
Date:
09/27/16

Direction of Photo:

West
Description:

Water meter
(foreground) and fire
hydrant present along
East Raleigh Street.

PHOTOGRAPHIC LOG

Client Name:
Mountaire Farms of North Carolina Corp
Site Location:
Mountaire Siler City Brownfields Site; Siler City, North
Carolina
Project No.
201691
Photo No.
9
Date:
09/27/16

Direction of Photo:

South
Description:

A natural gas line
marker (yellow) is
present along the fence
line on the northern
side of the processing
plant.

Photo No.
10
Date:
09/27/16

Direction of Photo:

West
Description:

Overhead lines along
East Third Street.

PHOTOGRAPHIC LOG

Client Name:
Mountaire Farms of North Carolina Corp
Site Location:
Mountaire Siler City Brownfields Site; Siler City, North
Carolina
Project No.
201691
Photo No.
11
Date:
09/27/16

Direction of Photo:

Southeast
Description:

Overhead lines in a
residential
neighborhood along
South Tenth Avenue.

Photo No.
12
Date:
09/27/16
Direction of Photo:

East
Description:

Underground electricity
cable box (behind fire
hydrant) on a
residential property.

PHOTOGRAPHIC LOG

Client Name:
Mountaire Farms of North Carolina Corp
Site Location:
Mountaire Siler City Brownfields Site; Siler City, North
Carolina
Project No.
201691
Photo No.
13
Date:
09/27/16

Direction of Photo:

South
Description:

Two flush-mounted
monitoring wells
present at the former
gas station to the north
of the processing plant.

Photo No.
14
Date:
09/27/16

Direction of Photo:

Northwest
Description:

One flush-mounted
monitoring well
(submerged in a puddle
of water; foreground)
located at the Quick
Way Mart gas station
on the eastern side of
the processing plant.

PHOTOGRAPHIC LOG

Client Name:
Mountaire Farms of North Carolina Corp
Site Location:
Mountaire Siler City Brownfields Site; Siler City, North
Carolina
Project No.
201691
Photo No.
15
Date:
09/27/16

Direction of Photo:

Southeast
Description:

Flush-mounted
monitoring well
(bottom left corner of
photograph) located on
the adjacent parcel to
the east of the
warehouse property
(i.e., the former motor
vehicle dealership).

Photo No.
16
Date:
09/27/16

Direction of Photo:

East
Description:

Non-perennial
stormwater drainage
ditch on the southern
side of the office
property located at
1100 East Third Street.

Appendix C

Divider
Page
Divider
Page

Divider
Page

Appendix D
NC Public Water Supply Map
Esri, HERE, DeLorme, MapmyIndia, © OpenStreetMap contributors, and theGIS user community
Surface Water Sources
Surface Water Community
Groundwater_Sources_2015
Ground Water Community
Ground Water Non-Transient Non-Community
Ground Water Transient Non-Community
Ground Water Adjacent
September 29, 2016
State of North Carolina DOT, Esri, HERE, DeLorme, NGA, USGS | Esri, HERE | NC Public Water Supply
0 1 20.5 mi
0 1 20.5 km
1:72,224

Divider
Page

Source Water Assessment Program Report
for
SILER CITY, CITY OF
Community Water System

Introduction: What is a Source Water Assessment?
The North Carolina Division of Water Resources, Public Water Supply (PWS) Section is
responsible for implementing the Source Water Assessment Program (SWAP) and completing
assessments for all public drinking water supplies in the state. The 1996 amendments to the Safe
Drinking Water Act provided federal support and required states to conduct assessments of all
public water systems. A source water assessment is a qualitative evaluation of the potential of a
drinking water source to become contaminated by the identified potential contaminant sources
(PCS) within the delineated area. In North Carolina there are more than 10,000 public water
supply sources that were assessed by the state. The PWS Section has gathered information for
each water supply and developed a process for completing the assessments. This process is
summarized in the next few pages and detailed in Section 6 of this report.
This report provides a summary of the results for the Source Water Assessment for your
drinking water source(s).

What is the Source of Your Drinking Water?
Everyone wants clean, safe drinking water and we assume this natural resource will always be
available to us. However, surface water sources can be threatened by many potential contaminant
sources, including permitted wastewater discharges, urban storm water runoff, or other types of
non-point source contamination such as runoff produced by agricultural activities and land
clearing for development. Your drinking water source(s) is listed in Table 1. Protecting your
drinking water from becoming contaminated is a wise investment in public health and your
community's future.
PWS ID: 03-19-010 2 August 21, 2015
Table 1. Public Water Supply System Information
System Name SILER CITY, CITY OF
City SILER CITY
PWS ID 03-19-010
Source Name ROCKY RIVER (LOWER)
Assessment Report Contents
This assessment report includes the following sections:
Section 1: Assessment Area Delineation
Section 2: Potential Contaminant Source Inventory and Map
Section 3: What is a Susceptibility Rating?
Section 4: Reviewing Your SWAP Results
Section 5: List of Maps, Tables, and Figures for Your Surface Water Source(s)
Section 6: North Carolina's SWAP Approach
Section 1: Assessment Area Delineation
The area delineated for your surface water source(s) for this assessment is the water supply
watershed. A watershed is a geographic area of land draining to either a stream or lake. Local
ordinances dictate the type of development that can take place in some sections of the water
supply watershed. In general, the watershed of your surface water source(s) is the area through
which contaminants, if released to the environment, can be reasonably expected to move across
the land surface following the path of overland flow or shallow subsurface flow and into the
surface water body (stream or lake).
Section 2: Potential Contaminant Source Inventory and Map
The potential contaminant source inventory map shows the delineated area for your surface
water source(s). This is the area where potential contaminant sources, if released to the
environment, could reasonably be expected to be a risk or a potential for contamination of your
drinking water supply. A PCS in this assessment report is a facility or site regulated under a state
or federal regulatory program. These facilities are identified in electronic databases that contain
location information for each facility. Only databases that include statewide information were
used for this source water assessment. Included in this report are:
1) A table of any PCS identified within the delineated assessment area; and
PWS ID: 03-19-010 3 August 21, 2015
2) A map of the delineated assessment area showing PCSs, roads, jurisdictional
boundaries and other pertinent information.
It is important to note that the PCSs identified in this report are only potential sources of
contamination to your drinking water source. Environmental contamination is not likely to occur
if harmful contaminants are managed properly.
Section 3: What is a Susceptibility Rating?
In North Carolina the susceptibility of any drinking water source is based on two components,
a contaminant rating and an inherent vulnerability rating. Your surface water source(s) was
assigned a qualitative susceptibility rating of higher, moderate or lower based on the results of
the contaminant rating and inherent vulnerability rating process as described in the following
paragraphs.
Susceptibility Rating
The final susceptibility rating for your surface water source(s) is determined by combining the
contaminant rating and the inherent vulnerability rating. More detailed information on the
susceptibility rating process can be found in Section 6 of this report.
Contaminant Rating
The contaminant rating for your surface water source(s) was determined based on the number
and location of PCSs within the delineated area. Each PCS identified within the delineated area
was assigned a risk rating of higher, moderate or lower. If a PCS is a facility regulated in an
existing environmental program, it will receive a risk rating of higher. The number of PCSs that
occur within the delineated area was determined and a contaminant rating of higher, moderate or
lower was assigned to your surface water source(s).
Inherent Vulnerability Rating
The inherent vulnerability rating of your surface water source(s) refers to the geologic
characteristics or existing conditions of the surface water source(s) and the delineated assessment
area (watershed). These characteristics include water supply watershed classification, surface
water source location and the watershed characteristics rating. The watershed classification is
based on the size of the watershed, development activities, and allowable waste treatment and
disposal practices. The surface water sources are located in streams, large multi-purpose
impoundments or small water supply impoundments. The raw water quality rating assessed
turbidity and total coliform values over twelve months. The watershed characteristics rating is an
assessment of the likelihood that contaminants will follow the path of overland flow or shallow
subsurface flow to a surface water source. An inherent vulnerability rating of higher, moderate or
lower was assigned to your surface water source(s).
PWS ID: 03-19-010 4 August 21, 2015
Table 2. SWAP Results Summary
Source Name
Inherent
Vulnerability
Rating
Contaminant
Rating
Susceptibility
Rating
ROCKY RIVER
(LOWER) Moderate Moderate Moderate

It is important to understand that a susceptibility rating of higher does not
imply poor water quality. Susceptibility is an indication of a water supply's
potential to become contaminated by the identified PCSs within the
assessment area.

Table 3. Surface Water Source - Information
Source Name Watershed
Classification Source Location
ROCKY RIVER
(LOWER) WS-III Class 1

Section 4: Reviewing Your SWAP Results
Please review the information on your surface water source(s) provided in this report. If you
believe any of this information is incorrect, please contact the Public Water Supply Section by e-
mail at the following address: [e-mail]. Or you may submit comments to us at:
SWAP
Public Water Supply Section
1634 Mail Service Center
Raleigh, NC 27699-1634
Or you may contact the Source Water Assessment staff by phone at 919-707-9098.
PWS ID: 03-19-010 5 August 21, 2015
Section 5: Maps, Tables and Figures for Your Surface Water Source(s)
Maps, tables and figures specific to your surface water source(s) are included in this report in the
following pages and are listed below.
Map 1. Location Map
Map 2. Delineated Area and PCS Map

Table 4. Potential Contaminant Source Attributes
Table 5. Inherent Vulnerability Rating
Table 6. Watershed Characteristics Rating Calculation

Figure 1. Land Use / Land Cover Categories
Figure 2. Watershed Characteristics Rating
Figure 3. Average Annual Precipitation Rating
Figure 4. Land Surface Slope Rating
Figure 5. Land Use Rating
Figure 6. Land Cover Rating
Figure 7. Ground Water Contribution Rating

PWS ID: 03-19-010 6 August 21, 2015
"
CHATHAMCHATHAM
RANDOLPHRANDOLPH
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GUILFORDGUILFORD
ORANGEORANGE
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Asheboro
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Siler City
Liberty
Randleman
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N C -6 2
N
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ROCKY RIVER (LOWER)
MAP 1. LOCATION MAP ©Roads
Rivers and Streams
Major Hydrology
Municipal Boundaries
County Boundaries
Watershed Zones
Critical Area (NA for WS-I)
Protected Area Boundary (WS-IV, V only)
Stream Zone
Watershed Boundary
0 5 10 15 Miles
SILER CITY, CITY OF, PWS ID: 0319010, ROCKY RIVER (LOWER)

PWS ID: 03-19-010 7 August 21, 2015
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ROCKY RIVER (LOWER)
MAP 2. DELINEATED AREA AND PCS MAP ©6 Animal Operations
*CERCLIS Sites
)RCRA Gen. / Trans. Facilities
<Non Discharge Permits
7 NPDES Permits
[National Priority List Sites
F PCB Sites
(Pollution Incidents
+Septage Disposal Sites
,Soil Remediation Sites
i Solid Waste Facilities
h Tier II Sites
8 RCRA TSD Facilities
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_UIC Permits
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Roads
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Major Hydrology
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Watershed Zones
Critical Area (NA for WS-I)
Protected Area Boundary (WS-IV, V only)
Stream Zone
Watershed Boundary
0 4,000 8,000 12,000 Feet
PCS Types
SILER CITY, CITY OF, PWS ID: 0319010, ROCKY RIVER (LOWER)

PWS ID: 03-19-010 8 August 21, 2015

Table 4. Potential Contaminant Source Attributes
SILER CITY, CITY OF
PWS ID: 03-19-010, ROCKY RIVER (LOWER)

Common Attributes

PCS Name PCS ID PCS Type PCS Risk
Rating
Street Address City Zip County
MICHAEL
THOMAS
FURNITU
RE
NCR000143
594
RCRA Gen. /
Trans. Facilities
H EAST
NEWBERRY ST.
LIBERTY 27298 RANDOL
PH
City of
Burlington
Residuals
Land
Applicatio
n Program
WQ0000520 Non Discharge
Points
H Unknown Unknown Unkno
wn
ALAMAN
CE
City of
Burlington
Residuals
Land
Applicatio
n Program
WQ0000520 Non Discharge
Points
H Unknown Unknown Unkno
wn
ALAMAN
CE
City of
Burlington
Residuals
Land
Applicatio
n Program
WQ0000520 Non Discharge
Points
H Unknown Unknown Unkno
wn
ALAMAN
CE
City of
Burlington
Residuals
Land
Applicatio
n Program
WQ0000520 Non Discharge
Points
H Unknown Unknown Unkno
wn
ALAMAN
CE
City of
Burlington
Residuals
Land
Applicatio
n Program
WQ0000520 Non Discharge
Points
H Unknown Unknown Unkno
wn
ALAMAN
CE

PWS ID: 03-19-010 9 August 21, 2015
PCS Name PCS ID PCS Type PCS Risk
Rating
Street Address City Zip County
City of
Burlington
Residuals
Land
Applicatio
n Program
WQ0000520 Non Discharge
Points
H Unknown Unknown Unkno
wn
ALAMAN
CE
Liberty
Watewater
Spray
Irrigation
Facility
WQ0003090 Non Discharge
Points
H Unknown Unknown Unkno
wn
RANDOL
PH
Liberty
Watewater
Spray
Irrigation
Facility
WQ0003090 Non Discharge
Points
H Unknown Unknown Unkno
wn
RANDOL
PH
Liberty
Watewater
Spray
Irrigation
Facility
WQ0003090 Non Discharge
Points
H Unknown Unknown Unkno
wn
RANDOL
PH
Liberty
Watewater
Spray
Irrigation
Facility
WQ0003090 Non Discharge
Points
H Unknown Unknown Unkno
wn
RANDOL
PH
Liberty
Watewater
Spray
Irrigation
Facility
WQ0003090 Non Discharge
Points
H Unknown Unknown Unkno
wn
RANDOL
PH
Liberty
Watewater
Spray
Irrigation
Facility
WQ0003090 Non Discharge
Points
H Unknown Unknown Unkno
wn
RANDOL
PH
Liberty
Watewater
Spray
Irrigation
Facility
WQ0003090 Non Discharge
Points
H Unknown Unknown Unkno
wn
RANDOL
PH
Liberty
Watewater
Spray
Irrigation
Facility
WQ0003090 Non Discharge
Points
H Unknown Unknown Unkno
wn
RANDOL
PH

PWS ID: 03-19-010 10 August 21, 2015
PCS Name PCS ID PCS Type PCS Risk
Rating
Street Address City Zip County
Brookwoo
d Farms
Residuals
Land
Applicatio
n Program
WQ0004956 Non Discharge
Points
H Unknown Unknown Unkno
wn
CHATHA
M
Brookwoo
d Farms
Residuals
Land
Applicatio
n Program
WQ0004956 Non Discharge
Points
H Unknown Unknown Unkno
wn
CHATHA
M
Brookwoo
d Farms
Residuals
Land
Applicatio
n Program
WQ0004956 Non Discharge
Points
H Unknown Unknown Unkno
wn
CHATHA
M
Brookwoo
d Farms
Residuals
Land
Applicatio
n Program
WQ0004956 Non Discharge
Points
H Unknown Unknown Unkno
wn
CHATHA
M
Brookwoo
d Farms
Residuals
Land
Applicatio
n Program
WQ0004956 Non Discharge
Points
H Unknown Unknown Unkno
wn
CHATHA
M
Pilgrim's
Pride
Corporatio
n-Staley
Hatchery &
Feed Mill
WQ0005681 Non Discharge
Points
H Unknown Unknown Unkno
wn
RANDOL
PH
Micah and
Sherry
Dark SFR
WQ0010523 Non Discharge
Points
H Unknown Unknown Unkno
wn
CHATHA
M
Iglesia
Presbyteria
na
Ebernezer
Church
SW5080601 NPDES Permits H Old 421 Hwy N Siler City 27344 CHATHA
M
8042 Silk
Hope-
Liberty
Road
NCG550379 NPDES Permits H 8042 Silk Hope-
Liberty Rd
Siler City 27344 CHATHA
M

PWS ID: 03-19-010 11 August 21, 2015
PCS Name PCS ID PCS Type PCS Risk
Rating
Street Address City Zip County
8042 Silk
Hope-
Liberty
Road
NCG550352 NPDES Permits H 8042 Silk Hope-
Liberty Rd
Siler City 27344 CHATHA
M
Kinro Inc NCGNE000
5
NPDES Permits H 6889 Kinro Rd Liberty 27298 RANDOL
PH
Leggett &
Platt Office
Component
s, LLC
NCGNE021
6
NPDES Permits H 330 N Greensboro
St
Liberty 27298 RANDOL
PH
SILER OIL
CO
5193 Pollution
Incidents
H NC 421 SILER
CITY
CHATH
THURMA
N
RESIDEN
CE (AKA
MOON
PROP
FORMER)
26240 Pollution
Incidents
H 9195 SILER CITY
SNOW CAMP RD
SILER
CITY
CHATH
H & M
TIRE
SERVICE
37686 Pollution
Incidents
H 232 N.
GREENSBORO
LIBERTY RANDO
HANDY
MART #3
30208 Pollution
Incidents
H 204 N.
GREENSBORO
STREET
LIBERTY RANDO
EULISS
OIL
COMPAN
Y - B
18035 Pollution
Incidents
H 122 S. FOSTER
ST
LIBERTY RANDO
PUMP-N-
PAK
17768 Pollution
Incidents
H 4994 HWY 49 S LIBERTY RANDO
GREGSO
N
FURNITU
RE-
MAINT.
BLDG.
15494 Pollution
Incidents
H 206 E. FRAZIER
AVE.
LIBERTY RANDO
HANDY
MART #1
13633 Pollution
Incidents
H 728 S.
GREENSBORO
ST.
LIBERTY RANDO
GLENDA
LE
HOSIERY
COMPAN
Y
13632 Pollution
Incidents
H 210 E.
SWANNANOA
AVE.
LIBERTY RANDO

PWS ID: 03-19-010 12 August 21, 2015
PCS Name PCS ID PCS Type PCS Risk
Rating
Street Address City Zip County
LIBERTY
BP
13356 Pollution
Incidents
H HWY
421/BOWMAN
LIBERTY RANDO
MARLEY'
S EXXON
20946 Pollution
Incidents
H OLD HIGHWAY
421
STALEY RANDO
LANGLE
Y TIRE
SERVICE
13623 Pollution
Incidents
H 113 S.
STALEY/HWY
421S
STALEY RANDO
Mountaire
Farms -
Siler City
Hatchery
4047851 Tier II Sites H 4555 US 421 South Siler City 27344 Chatham
Quality
Mart #7
4013427 Tier II Sites H 4994 Highway 49
North
Liberty 27298 Randolph
Staley Feed
Mill
4021913 Tier II Sites H 2607 Old Highway
421
Staley 27355 Randolph
THE
PANTRY
150
00-0-
0000018255
UST Sites H 127 E
SWANNANOA
ST
LIBERTY Unkno
wn
RANDOL
PH
KWIK
STOP 3
00-0-
0000018264
UST Sites H 204 NORTH
GREENSBORO
ST
LIBERTY Unkno
wn
RANDOL
PH
H & M
TIRE
SERVICE
00-0-
0000018565
UST Sites H 232 NORTH
GREENSBORO
STREET
LIBERTY Unkno
wn
RANDOL
PH
QUALITY
MART 7
00-0-
0000018603
UST Sites H 4994 HWY 49
SOUTH
LIBERTY Unkno
wn
RANDOL
PH
CRUTCHF
IELD
00-0-
0000025775
UST Sites H 6749 SILER CITY
SNOW CAMP RD
SILER
CITY
Unkno
wn
CHATHA
M
Bish
Enterprises
NCG200337 NPDES Permits H 277 Bish Rd Siler City 27344 CHATHA
M
Pilgrim's
Pride
Corporatio
n
NCG060188 NPDES Permits H 2607 Old 421 Rd Staley 273558
244
RANDOL
PH
141 Willie
Duncan
Road
NCG551266 NPDES Permits H 141 Willie Duncan
Rd
Siler City 27344 CHATHA
M
Kustom
Auto
Recyclers
NCG100121 NPDES Permits H 7316 Siler City -
snow ca
Siler City 27344 CHATHA
M

PWS ID: 03-19-010 13 August 21, 2015
PCS Name PCS ID PCS Type PCS Risk
Rating
Street Address City Zip County
UFP Mid-
Atlantic,
LLC
NCG210344 NPDES Permits H 6985 Kenrow Rd Liberty 27298 RANDOL
PH
Edward's
Wood
Products
Inc -
Alamance
NCG210320 NPDES Permits H 3230 Staley Store
Rd
Liberty 27298 ALAMAN
CE

PWS ID: 03-19-010 14 August 21, 2015

Table 4. (Cont.) Potential Contaminant Source Attributes
SILER CITY, CITY OF
PWS ID: 03-19-010, ROCKY RIVER (LOWER)

Unique Attributes

PCS Name PCS ID Attribute Value
MICHAEL THOMAS
FURNITURE
NCR000143594 GENERATOR SQG
MICHAEL THOMAS
FURNITURE
NCR000143594 TRANSPORTER N
City of Burlington
Residuals Land
Application Program
WQ0000520 Permit Type Land Application of Residual Solids
(503)
City of Burlington
Residuals Land
Application Program
WQ0000520 Permit Type Land Application of Residual Solids
(503)
City of Burlington
Residuals Land
Application Program
WQ0000520 Permit Type Land Application of Residual Solids
(503)
City of Burlington
Residuals Land
Application Program
WQ0000520 Permit Type Land Application of Residual Solids
(503)
City of Burlington
Residuals Land
Application Program
WQ0000520 Permit Type Land Application of Residual Solids
(503)
City of Burlington
Residuals Land
Application Program
WQ0000520 Permit Type Land Application of Residual Solids
(503)
Liberty Watewater Spray
Irrigation Facility
WQ0003090 Permit Type Wastewater Irrigation
Liberty Watewater Spray
Irrigation Facility
WQ0003090 Permit Type Wastewater Irrigation
Liberty Watewater Spray
Irrigation Facility
WQ0003090 Permit Type Wastewater Irrigation
Liberty Watewater Spray
Irrigation Facility
WQ0003090 Permit Type Wastewater Irrigation

PWS ID: 03-19-010 15 August 21, 2015
PCS Name PCS ID Attribute Value
Liberty Watewater Spray
Irrigation Facility
WQ0003090 Permit Type Wastewater Irrigation
Liberty Watewater Spray
Irrigation Facility
WQ0003090 Permit Type Wastewater Irrigation
Liberty Watewater Spray
Irrigation Facility
WQ0003090 Permit Type Wastewater Irrigation
Liberty Watewater Spray
Irrigation Facility
WQ0003090 Permit Type Wastewater Irrigation
Brookwood Farms
Residuals Land
Application Program
WQ0004956 Permit Type Land Application of Residual Solids
(503 Exempt)
Brookwood Farms
Residuals Land
Application Program
WQ0004956 Permit Type Land Application of Residual Solids
(503 Exempt)
Brookwood Farms
Residuals Land
Application Program
WQ0004956 Permit Type Land Application of Residual Solids
(503 Exempt)
Brookwood Farms
Residuals Land
Application Program
WQ0004956 Permit Type Land Application of Residual Solids
(503 Exempt)
Brookwood Farms
Residuals Land
Application Program
WQ0004956 Permit Type Land Application of Residual Solids
(503 Exempt)
Pilgrim's Pride
Corporation-Staley
Hatchery & Feed Mill
WQ0005681 Permit Type Wastewater Irrigation
Micah and Sherry Dark
SFR
WQ0010523 Permit Type Single-Family Residence Wastewater
Irrigation
Iglesia Presbyteriana
Ebernezer Church
SW5080601 Permit Type State Stormwater
Iglesia Presbyteriana
Ebernezer Church
SW5080601 Permit Issued Date 6/17/2008
8042 Silk Hope-Liberty
Road
NCG550379 Permit Type Single Family Domestic Wastewater
Discharge COC
8042 Silk Hope-Liberty
Road
NCG550379 Permit Issued Date 8/1/2002
8042 Silk Hope-Liberty
Road
NCG550379 Permit Expiration Date 7/31/2007
8042 Silk Hope-Liberty
Road
NCG550352 Permit Type Single Family Domestic Wastewater
Discharge COC

PWS ID: 03-19-010 16 August 21, 2015
PCS Name PCS ID Attribute Value
8042 Silk Hope-Liberty
Road
NCG550352 Permit Issued Date 8/1/2013
8042 Silk Hope-Liberty
Road
NCG550352 Permit Expiration Date 7/31/2018
Kinro Inc NCGNE0005 Permit Type Stormwater Discharge, No Exposure
Certificate
Kinro Inc NCGNE0005 Permit Issued Date 4/28/2005
Leggett & Platt Office
Components, LLC
NCGNE0216 Permit Type Stormwater Discharge, No Exposure
Certificate
Leggett & Platt Office
Components, LLC
NCGNE0216 Permit Issued Date 5/1/2005
SILER OIL CO 5193 Pollutant Type GASOLINE/DIESEL/KEROSENE
SILER OIL CO 5193 Site Priority Code 95
THURMAN RESIDENCE
(AKA MOON PROP
FORMER)
26240 Pollutant Type GASOLINE/DIESEL/KEROSENE
THURMAN RESIDENCE
(AKA MOON PROP
FORMER)
26240 Site Risk H
H & M TIRE SERVICE 37686 Pollutant Type GASOLINE/DIESEL/KEROSENE
HANDY MART #3 30208 Pollutant Type GASOLINE/DIESEL/KEROSENE
HANDY MART #3 30208 Site Risk H
EULISS OIL COMPANY
- B
18035 Pollutant Type GASOLINE/DIESEL/KEROSENE
EULISS OIL COMPANY
- B
18035 Site Risk L
EULISS OIL COMPANY
- B
18035 Site Priority Code E010
PUMP-N-PAK 17768 Pollutant Type GASOLINE/DIESEL/KEROSENE
PUMP-N-PAK 17768 Site Risk H
PUMP-N-PAK 17768 Site Priority Code B120
GREGSON FURNITURE-
MAINT. BLDG.
15494 Pollutant Type HEATING OIL
GREGSON FURNITURE-
MAINT. BLDG.
15494 Site Risk H

PWS ID: 03-19-010 17 August 21, 2015
PCS Name PCS ID Attribute Value
GREGSON FURNITURE-
MAINT. BLDG.
15494 Site Priority Code B040
HANDY MART #1 13633 Pollutant Type GASOLINE/DIESEL/KEROSENE
HANDY MART #1 13633 Site Risk L
HANDY MART #1 13633 Site Priority Code E020
GLENDALE HOSIERY
COMPANY
13632 Pollutant Type HEATING OIL
GLENDALE HOSIERY
COMPANY
13632 Site Risk L
GLENDALE HOSIERY
COMPANY
13632 Site Priority Code D045
LIBERTY BP 13356 Pollutant Type GASOLINE/DIESEL/KEROSENE
LIBERTY BP 13356 Site Risk H
LIBERTY BP 13356 Site Priority Code B120
MARLEY'S EXXON 20946 Pollutant Type GASOLINE/DIESEL/KEROSENE
MARLEY'S EXXON 20946 Site Risk H
LANGLEY TIRE
SERVICE
13623 Pollutant Type GASOLINE/DIESEL/KEROSENE
LANGLEY TIRE
SERVICE
13623 Site Risk L
LANGLEY TIRE
SERVICE
13623 Site Priority Code C030
Bish Enterprises NCG200337 Permit Type Wholesale Trade of Metal Waste and
Scrap Stormwater Discharge COC
Bish Enterprises NCG200337 Permit Issued Date 1/1/2010
Bish Enterprises NCG200337 Permit Expiration Date 12/31/2014
Bish Enterprises NCG200337 Receiving Stream Lacy Creek
Pilgrim's Pride
Corporation
NCG060188 Permit Type Food/Tobacco/Soaps/Cosmetics/Public
Warehousing Stormwater Discharge
COC
Pilgrim's Pride
Corporation
NCG060188 Permit Issued Date 12/1/2012
Pilgrim's Pride
Corporation
NCG060188 Permit Expiration Date 10/31/2017

PWS ID: 03-19-010 18 August 21, 2015
PCS Name PCS ID Attribute Value
Pilgrim's Pride
Corporation
NCG060188 Receiving Stream Rocky River
141 Willie Duncan Road NCG551266 Permit Type Single Family Domestic Wastewater
Discharge COC
141 Willie Duncan Road NCG551266 Permit Issued Date 8/1/2013
141 Willie Duncan Road NCG551266 Permit Expiration Date 7/31/2018
141 Willie Duncan Road NCG551266 Receiving Stream Johnson Creek
Kustom Auto Recyclers NCG100121 Permit Type Used Motor Vehicle Parts Stormwater
Discharge COC
Kustom Auto Recyclers NCG100121 Permit Issued Date 11/1/2007
Kustom Auto Recyclers NCG100121 Permit Expiration Date 10/31/2012
Kustom Auto Recyclers NCG100121 Receiving Stream Mud Lick Creek
UFP Mid-Atlantic, LLC NCG210344 Permit Type Timber Products Stormwater Discharge
COC
UFP Mid-Atlantic, LLC NCG210344 Permit Issued Date 8/1/2013
UFP Mid-Atlantic, LLC NCG210344 Permit Expiration Date 7/31/2018
UFP Mid-Atlantic, LLC NCG210344 Receiving Stream Unnamed Tributary near Liberty
Edward's Wood Products
Inc - Alamance
NCG210320 Permit Type Timber Products Stormwater Discharge
COC
Edward's Wood Products
Inc - Alamance
NCG210320 Permit Issued Date 8/1/2013
Edward's Wood Products
Inc - Alamance
NCG210320 Permit Expiration Date 7/31/2018
Edward's Wood Products
Inc - Alamance
NCG210320 Receiving Stream North Prong Richland Creek (Farlows
Lake)

PWS ID: 03-19-010 19 August 21, 2015

Table 5. Inherent Vulnerability Rating
SILER CITY, CITY OF
PWS ID: 03-19-010, ROCKY RIVER (LOWER)

Surface Water Source
Characteristics
Higher
Vulnerability
Moderate
Vulnerability
Lower
Vulnerability
Watershed
Classification Moderate

Intake Location

Lower
Raw Water Quality
(water plant data) Higher

Watershed
Characteristics Rating

Lower

Inherent Vulnerability Rating: Moderate

PWS ID: 03-19-010 20 August 21, 2015

Table 6. Watershed Characteristics Rating Calculation
SILER CITY, CITY OF
PWS ID: 03-19-010 , ROCKY RIVER (LOWER)

Watershed Characteristics Rating 30.7

Notes:

1. Watershed Characteristics Rating for each cell (CR):
CR = [3 x (precipitation rating)] + [2 x (land surface slope rating)]
+ [1 x (GW contribution)] + [3 x (land use rating)] + [1 x (land cover rating)]

2. Watershed Characteristics Rating (R) for the entire Assessment Area is the mean of the
cell ratings (CR) calculated as:
The sum of all cell watershed characteristics ratings (CR) divided by the number of
cells (N) within the assessment area: R = (CR) / N

3. The USGS publication “Methods of ranking unsaturated zone and watershed
characteristics of public water supplies in North Carolina,” by J. L. Eimers, J. C. Weaver,
S. Terziotti, and R. W. Midgette, 1999, provides a detailed discussion of the methods
used to determine watershed characteristics ratings.

PWS ID: 03-19-010 21 August 21, 2015
FIGURE 1. LAND USE/LAND COVER CATEGORIES ©Water
Developed, Open Space
Developed, Low Intensity
Developed, Medium Intensity
Developed, High Intensity
Barren Land (Rock, Sand, Clay)
Deciduous Forest
Evergreen Forest
Mixed Forest
Shrub/Scrub
Grassland, Herbaceous
Pasture, Hay
Cultivated Crops
Woody Wetlands
Emergent Herbaceous Wetlands
Watershed Zones
Critical Area (NA for WS-I)
Protected Area Boundary (WS-IV, V only)
Stream Zone
Watershed Boundary
0 4,000 8,000 12,000 Feet
SILER CITY, CITY OF, PWS ID: 0319010, ROCKY RIVER (LOWER)

PWS ID: 03-19-010 22 August 21, 2015
"
ROCKY RIVER (LOWER)
FIGURE 2. WATERSHED CHARACTERISTICS RATING ©Lower <= 31
Moderate > 31 to 45
Higher > 45
Watershed Zones
Critical Area (NA for WS-I)
Protected Area Boundary (WS-IV, V only)
Stream Zone
Watershed Boundary
0 4,000 8,000 12,000 Feet
SILER CITY, CITY OF, PWS ID: 0319010, ROCKY RIVER (LOWER)

PWS ID: 03-19-010 23 August 21, 2015
FIGURE 3. AVERAGE ANNUAL PRECIPITATION RATING ©1 ( <= 40 inches)
2 ( > 40 to 45 inches)
3 ( > 45 to 50 inches)
4 ( > 50 to 55 inches)
5 ( > 55 to 60 inches)
6 ( > 60 to 65 inches)
7 ( > 65 to 70 inches)
8 ( > 70 to 75 inches)
9 ( > 75 to 80 inches)
10 ( > 80 inches)
Watershed Zones
Critical Area (NA for WS-I)
Protected Area Boundary (WS-IV, V only)
Stream Zone
Watershed Boundary
0 4,000 8,000 12,000 Feet
SILER CITY, CITY OF, PWS ID: 0319010, ROCKY RIVER (LOWER)

PWS ID: 03-19-010 24 August 21, 2015
"
ROCKY RIVER (LOWER)
FIGURE 4: LAND SURFACE SLOPE RATING ©1 ( <= 2 percent)
3 ( > 2 to 5 percent)
5 ( > 5 to 10 percent)
7 ( > 10 to 20 percent)
9 ( > 20 to 50 percent)
10 ( > 50 percent)
Watershed Zones
Critical Area (NA for WS-I)
Protected Area Boundary (WS-IV, V only)
Stream Zone
Watershed Boundary
0 4,000 8,000 12,000 Feet
SILER CITY, CITY OF, PWS ID: 0319010, ROCKY RIVER (LOWER)

PWS ID: 03-19-010 25 August 21, 2015
FIGURE 5: LAND USE RATING ©1 Water, Wetlands (Woody and Herbaceous)
2 Barren Land (Rock/Sand/Clay)
3 Forest (Deciduous, Evergreen, Mixed)
4 Grassland/Herbaceous; Shrub/Scrub
5 Pasture/Hay
6 Developed, Open Space
7 Developed, Low Intensity; Cultivated Crops
8 Developed, Medium Intensity
10 Developed, High Intensity
Watershed Zones
Critical Area (NA for WS-I)
Protected Area Boundary (WS-IV, V only)
Stream Zone
Watershed Boundary
0 4,000 8,000 12,000 Feet
SILER CITY, CITY OF, PWS ID: 0319010, ROCKY RIVER (LOWER)

PWS ID: 03-19-010 26 August 21, 2015
FIGURE 6: LAND COVER RATING ©1 Deciduous, Evergreen and Mixed Forest
3 (Water, Pasture/hay, Woody wetlands, Emergent herbaceous wetlands)
3 Water, Wetlands, Pasture/Hay, Grassland/Herbaceous
5 (Quarries/strip mines/gravel pits, Bare rock/sand, Transitional)
5 Barren Land (Rock, Sand, Clay)
6 Cultivated Crops
7 Developed, Low Intensity
8 Developed, Medium Intensity
10 Developed, High Intensity
Watershed Zones
Critical Area (NA for WS-I)
Protected Area Boundary (WS-IV, V only)
Stream Zone
Watershed Boundary
0 4,000 8,000 12,000 Feet
SILER CITY, CITY OF, PWS ID: 0319010, ROCKY RIVER (LOWER)

PWS ID: 03-19-010 27 August 21, 2015
FIGURE 7: GROUND WATER CONTRIBUTION RATING ©
Assigned Ratings
1 ( <= 10 Unsaturated Zone Rating)
2 ( >= 10 to 20 Unsaturated Zone Rating)
3 ( >= 20 to 30 Unsaturated Zone Rating)
4 ( >= 30 to 40 Unsaturated Zone Rating)
5 ( >= 40 to 50 Unsaturated Zone Rating)
6 ( >= 50 to 60 Unsaturated Zone Rating)
7 ( >= 60 to 70 Unsaturated Zone Rating)
8 ( >= 70 to 80 Unsaturated Zone Rating)
9 ( >= 80 to 90 Unsaturated Zone Rating)
10 ( >= 90 to 100 Unsaturated Zone Rating)
Watershed Zones
Critical Area (NA for WS-I)
Watershed Boundary
Protected Area Boundary (WS-IV, V only)
Stream Zone
0 4,000 8,000 12,000 Feet
SILER CITY, CITY OF, PWS ID: 0319010, ROCKY RIVER (LOWER)

PWS ID: 03-19-010 28 August 21, 2015
Section 6: North Carolina's SWAP Approach
This section of the report is a more detailed description of North Carolina's SWAP approach.
This is a summary of Chapter 2 of North Carolina's Source Water Assessment Program Plan.
Description of North Carolina’s SWAP Approach
To meet the requirements of the 1996 SDWA Amendments, a Source Water Assessment was
completed for approximately 9,000 drinking water sources in North Carolina. A delineated area
for assessment was established for each drinking water source. An inventory of potential
contaminant sources was conducted in each assessment area and finally, a susceptibility rating
was assigned to each drinking water source. Because of the scope of this task and the limited
time and resources available for completing the work, North Carolina’s SWAP program efforts
relies on Geographic Information Systems (GIS) to effectively use information. GIS allows
databases to be linked to points on a map (e.g., public water supply sources, streams, geology,
land use, roads, permitted waste disposal sites, Superfund sites, etc.) and overlaid on top of one
another.
Delineation of Assessment Areas for Surface Water Sources
For the purpose of performing source water assessments, "delineation" means defining what land
area constitutes the area contributing water to a public water supply source. The delineation of
the source water assessment areas for surface water sources was done in consideration and
collaboration with the Water Supply Watershed Protection (WSWP) Program. During the
development of the WSWP program (final state rules adopted in 1992), the state worked with
local governments to determine the location of all surface water sources and existing land uses
within the water supply watersheds. This information, in conjunction with information on the
types and location of wastewater discharges, was used to determine the appropriate Water
Supply Watershed Classification for more than 200 surface water sources in the state. The
watershed classifications, WS-I, WS-II, WS-III, WS-IV, and WS-V are based on the size of the
watershed, development activities, and allowable waste treatment and disposal practices.
All surface water sources were located on US Geological Survey 1:24,000 scale topographic
maps. The water supply watershed boundaries were delineated (except WS-V waters, which
were delineated for the SWAP assessments by the PWS Section), and the boundaries of the
Critical Area, and in the case of most WS-IV water supply watersheds Protected Areas
(described below) were delineated.
For protection of the surface water sources in North Carolina, a segmentation of the water supply
watersheds was implemented through the WSWP rules. The entire drainage areas of WS-I water
supply watersheds were delineated. These watersheds are all publicly owned and no new
development is allowed in these watersheds. These watersheds are very small. Some are located
within National Forests. Others are owned by a local government.
All WS-II, WS-III and WS-IV water supplies require delineation of a Critical Area which is
defined as the area within ½ mile and draining to the normal pool elevation of a water supply
reservoir, or ½ mile and draining to a water supply intake in a river. For WS-II and WS-III water
supplies, the remainder of the drainage area is subject to the development standards of the

PWS ID: 03-19-010 29 August 21, 2015
WSWP rules and are implemented through local land use ordinances. WS-IV water supplies,
which are typically portions of major river systems, are segmented in a Critical Area (previously
defined) and a Protected Area. The Protected Area is defined as the area within 5 miles and
draining to the normal pool elevation of a reservoir or 10 miles upstream and draining to a river
intake. In very few instances the WS-IV Protected Area encompasses the entire drainage area
due to the size of the watershed. In 1995, the state allowed local governments to request that the
10 mile Protected Area boundary of a WS-IV water supply be measured “run of river” rather
than using a 10-mile arc linear measurement. Surface waters that are used by industry to supply
their employees with drinking water or waters formerly used as water supply are generally
classified as WS-V. The WS-V waters are protected as water supplies and are typically located
upstream of and draining to Class WS-IV waters. Land use restrictions do not apply to WS-V
waters under the WSWP rules.
Please note that for the purpose of the PWS Section’s Source Water Assessments, delineation of
WS-IV boundaries may be different from the WSWP Program’s delineation. The PWS Section
watershed assessment areas include all land draining to a drinking water source. However, the
watersheds defined in accordance with the WSWP rules often exclude land area draining to a
source based on municipal or county jurisdictional boundaries. Please refer to the WSWP
program website (http://portal.ncdenr.org/web/lr/water-supply-watershed) for information on the
regulations associated with their program and the land area affected by their regulations.
Delineation of Assessment Areas for Public Water Supply Wells
The delineation of source water assessment areas for wells was in accordance with North
Carolina’s EPA approved Wellhead Protection Program. The calculated fixed radius method was
used to delineate assessment areas around each well in the following areas: piedmont and
mountains; the unconfined surficial aquifer of the coastal plain; and in the semi-confined
portions of the Castle Hayne aquifer with an estimated recharge rate of 250,000 gallons per day
per square mile. The aquifer-source-volume method was used for confined aquifers of the coastal
plain. These methods are described below. Well depth is the determining factor for a well to be
considered confined. Well depths greater than 70 feet are considered confined.
Other assessment area delineation methods may be of interest to a PWS system in an effort to
more accurately define the area contributing water to the well. The state will review delineations
provided by any PWS system that employs acceptable alternative delineation methods. Resulting
alternative delineation areas will be incorporated into the SWAP if the state concludes that the
use of the more sophisticated method is appropriate.
Calculation of the Contributing Area
The first step in delineating the assessment areas is to determine the size of the contributing area
to the well. When a well is pumped, it causes groundwater that is flowing through the subsurface
to flow toward the well. The surface area surrounding a well that delineates the area in which
water entering the groundwater system at the water table eventually flows to the well and
discharges is known as the contributing area for the well. In this area, any contaminants released
to the environment that reach the water table, can reasonably be expected to move toward and
possibly reach the well. The calculated fixed radius method requires the pumping rate (Q) and
the recharge rate (W) for the pumping well in order to calculate the size of the contributing area.
The contributing area is calculated as follows:

PWS ID: 03-19-010 30 August 21, 2015

where:
AC = contributing area in square miles,
Q = maximum daily pumping rate in gallons per day, and
W = average recharge rate in gallons per day per square mile.
The maximum daily pumping rate in gallons per day was determined from information on wells
obtained from PWS Section sanitary survey inspection forms, Division of Water Resources
Local Water Supply plans, and information supplied by system owners/operators. Where no
information was available, an estimate of maximum daily pumping rate was assigned based on
hydrogeologic characteristics of the aquifer supplying water to the well.
Size of the Assessment Area for Wells Using Calculated Fixed Radius Method
Estimates of the size of the contributing area can be obtained using the equation given above.
However, because of the complex nature of groundwater flow and contaminant transport, it is not
possible to define exact contributing area boundaries around each well. Two factors that affect
the shape of the contributing area and its position and orientation with respect to a pumping well
are the hydraulic gradient and aquifer transmissivity. The variation in aquifer transmissivity is
important in determining the shape of the contributing area for a supply well. In areas where the
hydraulic gradient and the aquifer transmissivity are essentially the same in all directions, the
shape of the contributing area depends primarily on the hydraulic gradient. Where the water table
is nearly flat, as near the water-table divide in broad interstream areas of low relief, the
contributing area is approximately circular. Where the hydraulic gradient is moderate to steep,
the contributing area is approximately elliptical, being oriented in the direction of groundwater
movement.
Due to limited availability of information on both hydraulic gradient and aquifer transmissivity,
the assessment area for each well was doubled. Therefore, the assessment area for each well is
twice the size of the calculated contributing area or:

W
Q = AC
W
2Q = A2 = A CSWAP

PWS ID: 03-19-010 31 August 21, 2015
Delineation of Assessment Areas for Wells in Confined Aquifers
Recharge to confined aquifers is much less than that to the surficial unconfined aquifer where the
calculated fixed radius method was used. If the calculated fixed radius method were applied to
wells withdrawing water from confined aquifers, the resulting assessment areas would be very
large. With the exception of a portion of the Castle Hayne aquifer, the aquifer-source-volume
method was used for delineating assessment areas for wells determined to be withdrawing water
from highly confined and semi-confined aquifers. “Aquifer source volume” refers to the volume
of the source aquifer that supplies the withdrawals from a well for a specified period of time.
This factor has been adopted in many states for defining assessment areas for confined aquifers.
For the purpose of these assessments, the volume of aquifer that supplies ten years of
withdrawals (i.e. the area surrounding a well in which the time of travel to the well is ten years)
was used. A ten-year period should be sufficient to provide time to assess the potential impact of
any groundwater contamination discovered within an assessment area and for developing
appropriate remediation and source water protection strategies for the water supply. For any well
in the coastal plain determined to be withdrawing water from a confined aquifer, the table below
will be used to determine the size of the assessment area.

Table 1. Radii of Assessment Areas for
Wells Withdrawing from Confined Aquifers in the Coastal Plain
Pumping Rate of
Well
(Gal. / min.)
Radius of Assessment
Area (Feet Rounded)
50 1000
100 1000
200 1500
500 2000
1000 3000
2000 3500

PWS ID: 03-19-010 32 August 21, 2015
Delineation of Assessment Areas for Water Supply Sources Classified as GWUDIs
Drinking water supplied by a well may include a surface water component. This is defined as
Ground Water Under the Direct Influence of Surface Water (GWUDIs). This term is used to
indicate that water withdrawn from a well contains a specific indicator or indicators
(e.g., giardia) of the presence of a surface water component. The delineated area for a PWS well
classified as a GWUDI well will be the combined area of a circle based on the calculated fixed
radius method and the resulting upgradient watershed of the intersected surface water.
Segmentation of the resulting watersheds was in accordance with the most appropriate water
supply watershed classification scheme.
Delineation for Water Supply Sources Classified as Springs
Springs can be defined as areas where the water table intersects the ground surface. Ground
water may have flowed many miles before appearing on the surface to form a particular spring.
The delineated area for a drinking water source classified as a spring was defined as the entire
watershed area upgradient of the spring. Segmentation of the resulting watersheds was in
accordance with the most appropriate water supply watershed classification scheme.
Susceptibility Rating Methodology
The state determined that the overall susceptibility rating for each drinking water source should
be based on two key components, a contaminant rating and an inherent vulnerability rating.
Inherent vulnerability refers to the physical characteristics and existing conditions of the
watershed or aquifer. A contaminant rating refers to an evaluation of the number and location of
potential sources of contamination. The contaminant rating and inherent vulnerability
methodologies are explained below.
Contaminant Rating Methodology
The contaminant rating for each water supply source was determined based on the number and
location of potential contaminant sources (PCSs) within the delineated area. The delineated area
for the drinking water source encompasses the area where PCSs, if released to the environment,
could reasonably be expected to be a risk or a potential for contamination of the drinking water
supply. A PCS in this assessment report is a facility or site regulated under a state or federal
regulatory program. These facilities are identified in electronic databases that contain location
information for each facility. Only databases that include information statewide were used for
this source water assessment. Each PCS identified within the delineated area was assigned a risk
rating of higher, moderate or lower. The number of PCSs that occur within the delineated area
was determined and a Contaminant Rating of higher, moderate or lower was assigned to each
drinking water source.

PWS ID: 03-19-010 33 August 21, 2015
Contaminant Rating for Ground Water Sources
For each ground water source, define an inner Zone A with an area equal to half the area of
the delineated assessment area. Using Table 2, determine the number of PCSs that occur
within each risk category according to their location, either in Zone A or in the remaining
delineated area. Determine the Contaminant Rating of higher, moderate or lower for each
well by adding the totals for each risk category.
Table 2. Determination of Contaminant Rating for Ground Water Sources

Potential
Contaminant
Sources in :
Number of
Higher Risk
PCSs
Cumulative Number of
Higher and Moderate
Risk PCSs
Cumulative Number of
Higher, Moderate and
Lower Risk PCSs

Zone A

(the inner 1/2
of the
delineated
area)

(Number
of sources )

> 1

Score: (1 or 0)

(Number
of sources )

> 2

Score: (1 or 0)

(Number
of sources )

> 4

Score: (1 or 0)

Delineated
Area
(Zone A plus
the remaining
delineated
area)

(Number
of sources )

> 2

Score: (1 or 0)

(Number
of sources )

> 4

Score: (1 or 0)

(Number
of sources )

> 8

Score: (1 or 0)

For each category, score “1” if the number of contaminants exceeds the indicated threshold,
or score “0” if the number of contaminants is less than the threshold. Total all the scores (1 or
0) for each category. Therefore, the highest possible score is 6.
Determine the Contaminant Rating for each well as follows:
Higher (6 - 4)
Moderate (3 - 2)
Lower (< 1)
Contaminant Rating for Surface Water Sources
Because the WSWP rules prohibit development in these watersheds, the existence of one
PCS in the delineated area of a drinking water source located in a WS-I watershed will result
in a contaminant rating of higher.
Using Table 3 for WS-II and WS-III watersheds, or Table 4 for WS-IV and V watersheds,
determine the number of PCSs that occur within each risk category (i.e., lower, moderate or
higher risk) and within each delineated assessment area (e.g., critical area, protected area,
etc). Determine the Contaminant Rating for each surface water PWS source by summing the
totals for each risk category.

PWS ID: 03-19-010 34 August 21, 2015

Table 3. Determination of Contaminant Rating
for Surface Water Sources in WS - II or III Watersheds
Potential
Contaminant
Sources in :

Number of
Higher Risk
PCSs
Cumulative
Number of Higher
and Moderate Risk
PCSs

Cumulative Number
of Higher, Moderate
and Lower Risk
PCSs

Critical Area

(Number of
sources )

> 1

Score: (1 or 0)

(Number
of sources_____)

> 5

Score: (1 or 0)

(Number
of sources )

> 10

Score: (1 or 0)

Watershed Area

Within 1000 Foot
Stream Zone

(Number of
sources )

> 5

Score: (1 or 0)

(Number
of sources )

> 10

Score: (1 or 0)

(Number
of sources )

> 20

Score: (1 or 0)

Watershed Area

Outside Stream
Zone

(Number of
sources )

> 20

Score: (1 or 0)

(Number
of sources )

> 40

Score: (1 or 0)

(Number
of sources )

> 80

Score: (1 or 0)

For each category, score “1” if the number of contaminants exceeds the indicated threshold,
or score “0” if the number of contaminants is less than the threshold. Total the scores (1 or 0
for each category). Therefore, the highest possible score is a 9.
Determine the Contaminant Rating for each surface water source in a Water Supply
Watershed II or III as follows:
Higher (9 - 6)
Moderate (5 - 3)
Lower (< 2)

PWS ID: 03-19-010 35 August 21, 2015
Table 4. Determination of Contaminant Rating
for Surface Water Sources in WS - IV and V Watersheds

Potential
Contaminant
Sources in :

Number of
Higher Risk
PCSs

Cumulative Number of
Higher and Moderate
Risk
PCSs

Cumulative
Number of Higher,
Moderate and
Lower Risk PCSs

Critical Area

(Number of
sources )

> 1

Score: (1 or 0)

(Number of
sources )

> 5

Score: (1 or 0)

(Number of
sources )

> 10

Score: (1 or 0)

Protected Area

Within 1000 Foot
Stream Zone

(Number of
sources )

> 5

Score: (1 or 0)

(Number of
sources )

> 10

Score: (1 or 0)

(Number of
sources )

> 20

Score: (1 or 0)

Protected Area

Outside Stream
Zone

(Number of
sources )

> 20

Score: (1 or 0)

(Number of
sources )

> 40

Score: (1 or 0)

(Number of
sources )

> 80

Score: (1 or 0)

Stream Zone from
Protected Area to
25 Mile or
Watershed
Boundary

(Number of
sources )

> 20

Score: (1 or 0)

(Number of
sources )

> 40

Score: (1 or 0)

(Number of
sources )

> 80

Score: (1 or 0)

For each category, score “1” if the number of contaminants exceeds indicated threshold. If
the number of contaminants is less than the threshold score “0.” Total all the scores (1 or 0
for each category). Therefore, the highest possible score is a 12.
Determine the Contaminant Rating for each surface water source in a Water Supply
Watershed IV or V as follows:
Higher (12 - 9)
Moderate (8 - 4)
Lower (< 3)

PWS ID: 03-19-010 36 August 21, 2015
Inherent Vulnerability Rating Methodology
The inherent vulnerability of a well or surface water source refers to the characteristics or
existing conditions of the well or surface water source and its delineated assessment area.
Several factors were evaluated for both groundwater and surface water sources and included in
the inherent vulnerability rating of each public water supply source. Each drinking water source
was assigned an inherent vulnerability rating of higher, moderate or lower.
Inherent Vulnerability Rating for Wells
The characteristics included for assigning an inherent vulnerability rating for wells are
aquifer rating, unsaturated zone rating and well integrity/well construction rating. The aquifer
rating is an assessment of the water transmitting characteristics of the aquifer. The
unsaturated zone rating is an assessment of the likelihood that contaminants from surface and
shallow sources will follow the path of aquifer recharge and reach the water table. The well
integrity/construction rating is an assessment of the quality of the construction of the well. A
brief description of each factor follows:
Aquifer Rating
The aquifer rating is a qualitative assessment of the water transmitting characteristics of the
aquifer. Relative differences in aquifer vulnerability were based on a review of relevant
literature, expert opinions, and confirmed with historical data. Factors considered in rating
aquifer vulnerability include hydraulic conductivity, degree of confinement, dilution, and
sorption potential. The attenuative capacity of the unsaturated zone is not considered in the
determination of aquifer ratings. Table 5 summarizes the aquifer-rating scheme used for
these assessments.
Well depths determined whether a well was considered unconfined, deep confined or shallow
confined for these assessments. Wells less than or equal to 70 feet deep were considered to
be withdrawing water from an unconfined or surficial aquifer. Wells greater than 70 feet but
less than 180 feet deep were considered to be withdrawing water from a shallow confined
aquifer. Wells greater than 180 feet deep were considered to be withdrawing water from a
deep confined aquifer.

PWS ID: 03-19-010 37 August 21, 2015
Table 5. Aquifer Rating Based on Water Transmitting Characteristics
Aquifer/Ground Water Source Rating
Coastal Plain Aquifers:
Deep Confined (e.g., Kinston area) Lower
Shallow Confined (e.g., Pamlico Co.) Moderate
Unconfined (e.g., Castle Hayne Outcrop area) Higher
Piedmont and Mountain Aquifers:
Triassic Basins (e.g., Sanford-Durham) Moderate
Fractured Rock Aquifers Higher
Other:
Metamudstones and Meta-argillites of the Carolina Slate Belt Higher
Areas with Wells Cased to Less Than 20 Feet Higher
Groundwater under the Direct Influence of Surface Water Higher
Sand Hills Area Higher

Unsaturated Zone Rating
The state, in cooperation with the United States Geological Survey (USGS), developed the
unsaturated zone rating methodology. The USGS Water-Resources Investigations Report 99-
4283, "Methods of Rating Unsaturated Zone and Watershed Characteristics of Public Water
Supplies in North Carolina" describes the methodology. The unsaturated zone rating is the
combination of selected factors that contribute to the likelihood that contaminants from
surface and shallow sources will follow the path of aquifer recharge and reach the water
table. Contributing factors, in the form of GIS spatial data layers, include land use/land
cover, vertical hydraulic conductance of the unsaturated zone, and land-surface slope.
Vertical hydraulic conductance measures the capacity of the unsaturated zone to transmit
water from land surface to water table. Land-surface slope and land cover influences the
amount of precipitation that infiltrates into the subsurface. Land use describes the activities
that take place on the surface or in the shallow subsurface and the type of contaminants that
may be present as a result of those activities (i.e., "non-point source" potential contaminant
sources).

PWS ID: 03-19-010 38 August 21, 2015
Well Integrity/Construction Rating
The integrity of well construction can vary widely, depending on details such as casing
depth, grouting depth, well materials and driller knowledge. However, these details are not
always available for assigning SWAP assessment ratings. In 1994 and 1999 there were
important rule changes that greatly improve the quality of the well construction standards.
Therefore, the SWAP assessments use well construction and approval dates as a surrogate to
construction details to assign a well construction / integrity rating. For wells that construction
and approval date is not available, the well construction/integrity rating defaults to Higher.
Table 6 summarizes the characteristics evaluated and rated for the inherent vulnerability for
each PWS well. Each well was assigned an inherent vulnerability rating of higher, moderate
or lower:
Table 6. Inherent Vulnerability Rating of Wells

Inherent Vulnerability
Factors

Higher
Vulnerability

Moderate
Vulnerability

Lower
Vulnerability

Aquifer Rating

10

5

- 1
Unsaturated Zone
Rating

10

5

1
Well
Integrity/Construction
Rating

5

3

1

Totals

25-18

17-15

14-1

Inherent Vulnerability Rating for Surface Water Sources
The inherent vulnerability of a surface water source refers to the characteristics and existing
conditions of the source and the delineated assessment area (watershed). The characteristics
included for assigning an inherent vulnerability rating are water supply watershed
classification, surface water source location, raw water quality, and the watershed
characteristics rating. The watershed classification is based on the size of the watershed,
development activities, and allowable waste treatment and disposal practices. The surface
water sources were characterized based on whether they are located in streams, large multi-
purpose reservoirs, or small water supply reservoirs. The raw water quality rating is based on
recorded turbidity and total coliform values over a twelve month period. The watershed
characteristics rating is an assessment of the likelihood that contaminants will follow the path
of overland flow or shallow subsurface flow to a surface water source. A description of each
factor follows:

PWS ID: 03-19-010 39 August 21, 2015
Watershed Classification
In North Carolina, all surface water sources are located in water supply watersheds that are
classified as either WS-I, II, III, IV, or V. The Water Supply Watershed Protection rules
required that all local governments having land use jurisdiction within water supply
watersheds adopt and implement water supply watershed protection ordinances, maps and a
management plan. All of these ordinances are in place and have been deemed to be in
compliance with the statutory requirements. The inherent vulnerability ratings for watershed
classification are based on differences between watershed classes, including size of the
watershed, development activities, and allowable waste treatment and disposal practices.
Surface Water Source Location
All surface water sources are located in streams, large multi-purpose reservoirs (Class 3), or
small water supply reservoirs (Class 1 or 2). The inherent vulnerability ratings for surface
water source location are based on differences between the reaction time for a water plant in
the case of a contamination event or spill in a stream versus a reservoir and includes the
allowable activities on surface water reservoirs (i.e., single use versus multiple uses allowed).
Raw Water Quality
The likelihood of the presence of Cryptosporidium and other water-borne microorganisms
increases when turbidity is high. Therefore, turbidity and total coliform bacteria are good
indicators of raw water quality. The Area Wide Optimization Program (AWOP) within the
PWS Section has developed a ranking system for surface water treatment plants based
primarily on these two parameters. This ranking system, with some minor modifications, has
been adopted by SWAP in order to assign a raw water quality rating to each surface water
source.
The AWOP ranking system is based on the treatment plant’s raw, settled and finished water
turbidity and coliform levels along with violations of MCLs and treatment techniques. Raw,
settled and finished water samples are collected daily and compiled in a monthly report,
commonly referred to as a MOR (monthly operating report). The AWOP ranking system
first totals the number of months in a year that specific levels of turbidity and coliform are
exceeded and/or the number of months certain violations occur. The monthly totals are then
multiplied by a weighting factor to balance the relative importance of these parameters.
These numbers are then totaled for the year and are considered the water treatment plant’s
total score.
Because the purpose of SWAP is to assess sources of drinking water supply and not how well
water plants treat their water, SWAP only uses the raw water scores for turbidity and
coliform from the AWOP ranking system. The total raw water quality scores were divided
into three categories of vulnerability: Higher, Moderate and Lower. The AWOP ranking
system is for surface water treatment plants and not individual surface water sources.
Therefore, in the case where more than one source is used by a treatment plant, the plant’s
raw water quality rating was initially assigned to all of the plant’s sources. Upon review by
the regional office staff some of the ratings were then adjusted based on their extensive
knowledge of the surface water sources in their area.

PWS ID: 03-19-010 40 August 21, 2015

Watershed Characteristics Rating
The state determined the watershed characteristics ratings of each surface water source in
cooperation with the USGS. The USGS Water-Resources Investigations Report 99-4283,
"Methods of Rating Unsaturated Zone and Watershed Characteristics of Public Water
Supplies in North Carolina" describes this methodology. The watershed characteristics
ratings were based on the combination of selected factors that may contribute to the
likelihood that contaminants follow the path of overland flow and reach the surface water
source. Contributing factors, in the form of GIS spatial data layers, include average annual
precipitation, land cover, land use, land-surface slope and groundwater contribution.
Precipitation is the source of water transported overland to a stream or lake. Land-surface
slope and land cover influence the amount of precipitation that infiltrates into the subsurface.
Land use describes the activities that take place on the surface or in the shallow subsurface
and the type of contaminants that may be present as a result of those activities (i.e., non-point
source potential contaminant sources). Ground-water contribution is the effect of ground
water on surface-water quantity and quality. For these assessments the ground-water
contribution is derived from the unsaturated zone rating described in the ground water
inherent vulnerability section of this report. Table 7 includes the characteristics that were
evaluated and rated for the inherent vulnerability for each surface water source:
Table 7. Inherent Vulnerability of Surface Water Sources

Surface Water
Source
Characteristics

Higher
Vulnerability

Moderate
Vulnerability

Lower
Vulnerability
Watershed
Classification
WS-IV, WS-V

10
WS-III, WS-II

5
WS-I

1

Intake Location

Direct Stream
8
Class 3
Reservoirs
4
Class 1 and 2
Reservoirs
2

Raw Water Quality
(water plant data)

5

3

1

Watershed
Characteristics
Rating

10

5

1

Totals

33 - 21

20 - 13

12 - 5

PWS ID: 03-19-010 41 August 21, 2015
Susceptibility Rating Methodology
The state assigned a susceptibility rating for each drinking water source that was based on two
components, a contaminant rating and an inherent vulnerability rating. Using the results of the
evaluations of contaminant rating and inherent vulnerability rating for each public drinking water
source, a susceptibility rating of higher, moderate or lower was assigned to each source
according to the table below:
Table 8. Susceptibility Rating for Public Water Supply Sources
by Combining the Inherent Vulnerability and Contaminant Ratings.
Contaminant
Rating
Inherent Vulnerability Rating
Higher Moderate Lower
Higher H H M
Moderate H M M
Lower M M L