NCG150045_COMPLETE FILE - HISTORICAL_20180731

STORMWATER DIVISION CODING SHEET
NCG PERMITS
PERMIT NO. /v C& I 6n 0 4 J
DOC TYPE
DOC DATE
HISTORICAL FILE
❑ MONITORING REPORTS
E.3 do I � --a I � / ,
YYYYMMDD

ROY COOPER
' •` Governor
MI[CHAEL S. REGAN
Secretary
Water Resources July 31, 2018 LINDA CULPEPPER
Environmental Quality Interim Director
CERTIFIED MAIL7017 2620 0000 9759 4735
RETURN RECEIPT REQUESTED
Lew Bleiweis, A.A.E, Executive Director
Greater Asheville Regional Airport Authority
61 Terminal Drive, Suite 1
Fletcher, N.C. 28732
CERTIFIED MAIL 7017 2620 0000 9759 4766
RETURN RECEIPT REQUESTED
Mr. Paul Draovitch — SVP, Environmental, Health, & Safety
Duke Energy
526 South Church Street, EC3XP
Charlotte, N.C. 28202
RE: Review Comments and Request for Additional Information
2018 Annual Closed -Circuit Television (CCTV) Inspection Video Assessment of the
60-inch Reinforced Concrete Pipe (RCP) Beneath Area 1 CCP Structural Fill
Duke Energy Progress, Inc./Greater Asheville Regional Airport Authority
CCP Structural Fill Projects —Asheville Airport
Permit WQ0000020
Buncombe County, N.C.
Dear Mr. Bleiweis and Mr. Draovitch,
The North Carolina Department of Environmental Quality (DEQ) recently completed a review of
Duke Energy's June 1, 2018 Annual CCTV Inspection Video Assessment (the "CCTV Report") of the
60-inch diameter reinforced concrete pipe (RCP) that extends for approximately 1,300 linear feet
and bisects the Area 1 coal combustion product (CCP) structural fill. The RCP conveys stormwater
and likely baseflow from the Asheville Airport terminal/hangar area and potentially additional
offsite commercial areas along Airport Road. The purpose of this letter is to provide review
comments and request additional information regarding the assessment.
The subject report highlighted multiple instances of cracking and infiltration of varying severities in
the RCP. Defects cited include a hole at the top of pipe (751.5 feet; Vault 2 to Vault 1), a damaged
joint (153.1 feet; Catch Basin to Vault 1), and multiple infiltration runners. The hole located at 751.5
feet was noted as the main structural change occurring since the 2017 inspection. Compared to the
2017 inspection, infiltration rates also increased slightly. The entire length of the RCP was rated
"fair condition" with a "moderate risk of failure." The inspection report recommends repairing the
hole at the top of pipe (751.5 feet; Vault 2 to Vault 1) and the damaged joint with exposed
reinforcement (153.1 feet; Catch Basin to Vault 1) to avoid further structural deterioration of the
pipe in these areas and continued CCTV inspections to monitor the condition of the pipe.
State of North Carolina I Environmental Quality I Water Resources
2090 U.S_ Highway 70, Swannanoa, North Carolina 28778
928-2964500

C-4,
-T�l IS IS

Bleiweis/Draovitch
July 31, 2018
Page 2 of 3
The structural integrity of the RCP is critical because the subject RCP: (1) bisects a structural fill
containing 730,000 tons of CCPs; (2) is located 400-feet upslope of the Hidden Creek residential
community; (3) is located upslope of multiple private water supply wells; (4) conveys waters of the
State; and, (5) is a critical stormwater conveyance necessary for airport operations. Failure of the
RCP could adversely impact airport operations and/or the residential community. Further
compromise of the structural fill by RCP failure may result in violations of North Carolina's water
quality laws and regulations, in addition to the violations already noted in the April 11, 2018 Notice
of Violation issued to both Duke Energy and the Greater Asheville Regional Airport Authority
(GARAA).
Based on the findings and site conditions, DEQ is requiring GARAA and Duke Energy to provide an
adequate response to the following:
1. If GARAA and Duke Energy collectively conclude the RCP is appropriate in its current
condition and use, provide a narrative stating that the reported condition (i.e., fair condition
and moderate failure risk) of the RCP is acceptable for its application (i.e., bisecting a CCP
fill, conveying the calculated drainage area for stormwater, serving as an underdrain for
baseflow, etc.) and setting (i.e., supporting Airport operations, upslope from a residential
neighborhood, discharging to waters of the State, etc.); or, -
2. If GARAA and Duke Energy collectively conclude the RCP is appropriate for its application
and setting but requires modification (e.g., repair), provide a narrative and schedule
outlining the proposed modifications; or,
3. If GARAA and Duke Energy collectively conclude the RCP is not appropriate for its
application and setting, provide a narrative and schedule for RCP replacement or removal.
Based on the findings and site conditions, DEQ is requiring GARAA and Duke Energy to complete the
following action items:
I. Identify a responsible party and submit a schedule to continue the annual CCTV inspections
and associated NASSCO PACP scoring system.
2. Submit a site map showing a schematic of the entire stormwater piping system for the 60-
inch RCP including any off -site stormwater contributions.
3. Calculate the drainage area for the entire 60-inch RCP including any offsite contributions.
4. Determine if the current 60-inch RCP and associated 15-inch RCP has the capacity to
withstand a 25-year, 24-hour storm event based on the calculated drainage area.
In addition, GARAA is covered under NPDES Industrial Stormwater Permit NCG150000 (Certificate of
Coverage NCG150045), which requires the development and implementation of a Preventative
Maintenance and Good Housekeeping program that includes, among other items, a schedule of
maintenance for stormwater control systems and facility systems that present a potential for
stormwater pollution (II-F). The NCG150000 permit also requires that the permittee properly
operate and maintain all facilities and systems of treatment and control (and related
appurtenances) that are installed or used by the permittee to achieve compliance with the
conditions of this permit (V-C (1)),

Bleiweis/Draovitch
July 31, 2018
Page 3 of 3
The GARAA and Duke Energy shall provide an adequate response and workplan with schedule to
address the items listed above by the close of business (COB) on Friday August 31, 2018. The
requirements set forth herein are in addition to the requirements set forth in DEQ's June 25, 2018
letter to both Duke Energy and GARAA regarding the June 8, 2018 corrective action work plan.
Please note that any submittal required herein shall bear the seal of an appropriately licensed North
Carolina Professional Engineer with a NASSCO PACP certification.
Should you have any questions regarding these matters, please feel free to contact Landon
Davidson or Brett Laverty at [phone]. Questions regarding the NPDES Industrial Stormwater
Permit may be directed to Annette Lucas at [phone].
Sincerely,
DocuSigned by:
7E617A38285848C...
G. Landon Davidson, P.G., Regional Supervisor
Water Quality Regional Operations
Division of Water Resources
Ash evill Regional Office
Toby Vinson, P.E. M, Interim Direc r
Division of Energy, Mineral and Land esources
cc: WQ Asheville Regional Office files
Matthew Burril —GARAA Board Member
ec: Michael Reisman —Asheville Regional Airport Authority
John Toepfer— Duke Energy
Annette Lucas-- NCDEMLR
Stan Aiken - NCDEMLR

4 MERITOR
Date: 12/01/2015 (Nov. ' 15 report)
Mentor Heavy Vehicle Systems LLC
1000 Rockwell Dr.
Fletcher, NC 28732
North Carolina Dept. of Environmental & Natural Resources (NCDENR)
North Carolina Dept. of Energy, Minerals, & Land Resources — Land Quality
DWQ-Surface Water Protection
2090 U.S. Hwy. 70
Swannanoa, NC 28778 RECt!V '
Mr. Aiken,
DEC 2 9 2015
CENTRAL FILES
Based upon my inquiry of the person or persons dir b gvD—Id i'1'e for
managing compliance with the permit monitoring requirement for total toxic organics
(TTO), I certify that to the best of my knowledge and belief, no leak, spill, or dumping of
concentrated toxic organics into the stormwater or onto areas which are exposed to
rainfall or stormwater runoff has occurred since filing the last discharge monitoring
report. I further certify that this facility is implementing all the provisions of the Solvent
Management Plan included in the Stormwater Pollution Prevention Plan.
Thank you,
Jack Anders
Facility Manager
[phone]

National Weather Service : Observed Weather for past 3 Days : Asheville, Asheville Region... Page 1 of 3
weather.gov
Asheville, Asheville Regional Airport r t
Enter Your "City, ST" or zip code Go metric en espanoi
D Temperature ff) Pressure Precipitation (in.)
Wind Heat
a Time Wind Vis. Weather Sky 6 hour Relative Chill index altimeter sea
1 (est) (mph) (mi.) Cond. Air Dwpt Humidity (IF) (IF) level 1 hr 3 hr 6 hr
e Max. Min. (in) (mb)
18 06:54 S 10 4.00 Light OVC002 48 46 53 45 93% 44 NA 30.20 1021.9 0.04 0.20
Rain
Fog/Mist
18 05:54 SW 7 6.00 Light OVC003 46 44 93% 42 NA 30.21 1022.5 0.03
Rain
Fog/Mist
18 04:54 S 8 3.00 Light OVC004 46 44 93% 42 NA 30.24 1023.4 0.08
Rain
Fog/Mist
18 03:54 S 8 3.00 Light OVC004 45 43 93% 41 NA 30.23 1023.1 0.04 0.05
Rain
Fog/Mist
18 02:54 S 6 4.00 Light OVCO20 46 42 86% 43 NA 30.25 1023.7 0.01
Rain
Fog/Mist
18 01:54 S 12 10.00 Overcast OVCO25 51 38 61% NA NA 30.26 1023.8
G 18
18 00:54 S 10 10.00 Overcast OVCO24 53 32 56 53 45% NA NA 30.26 1023.7
17 23:54 S 6 10.00 Overcast 131<N027 54 30 40% NA NA 30.29 1024.5
OVC041
17 22:54 SE 8 10.00 Overcast OVC032 54 28 37% NA NA 30.30 1025A
17 21:54 SE 7 10.00 Overcast FEW029 55 30 38% NA NA 30.29 1024.9
OVC039
17 20:54 S 8 10.00 Overcast OVC034 55 36 49% NA NA 30.29 1025.0
17 19:54 Vrbl 5 10.00 Overcast BKN038 56 38 51 % NA NA 30.28 1024.5
OVC049
17 18:54 S 7 10.00 Overcast BKN033 56 40 57 55 55% NA NA 30.28 1024.7
OVC042
17 17:54 SE 6 10.00 Overcast OVC031 56 41 57% NA NA 30.28 1024.6
17 16:54 S 8 10.00 Overcast OVCO25 55 42 62% NA NA 30.28 1024.7
17 15:54 S 13 10.00 Overcast BKN028 56 43 62% NA NA 30.28 1024.6
OVC042
17 14:54 Vrbl7 10.00 Mostly FEW031 57 44 62% NA NA 30.27 1024.1
Cloudy BKN040
17 13:54 S 12 10.00 Overcast FEW025 57 44 62% NA NA 30.27 1024.3
OVC030
17 12:54 SE 7 10.00 Overcast OVCO22 55 44 56 46 67% NA NA 30.28 1024.8
17 11:54 S 10 10.00 Overcast OVCO22 56 44 65% NA NA 30.30 1025.3
17 10:54 SE 7 10.00 Mostly BKN022 56 44 65% NA NA 30.30 1025.5
Cloudy
17 09:54 S 8 W.00 Overcast SCT023 53 43 69% NA NA 30.31 1025.9
OVC032
17 08:54 S 5 10.00 Overcast OVC032 50 43 77% 48 NA 30.30 1025.4
17 07:54 S 5 10.00 Overcast FEW022 47 41 80% 45 NA 30.29 1025.1
1 1/18/2015

National Weather Service : Observed Weather for past 3 Days : Asheville, Asheville Region... Page 2 of 3
OVC030
17
06:54
S 3
10.00
Overcast
OVCO27
46
39
47 45
77%
NA
NA
30.27
1024.5
17
05:54
Calm
10.00
A Few
FEW023
45
37
74%
NA
NA
30.26
1023.9
Clouds
17
04:54
Calm
10.00
Partly
SCT024
46
37
71 %
NA
NA
30.25
1023.6
Cloudy
17
03:54
Calm
10.00
Mostly
BKN022
46
37
71%
NA
NA
30.26
1023.8
Cloudy
BKN100
17
02:54
Calm
10.00
Overcast
OVC100
47
37
69%
NA
NA
30.27
1024,0
17
01:54
SE 5
10.00
Overcast
OVC100
47
36
66%
45
NA
30.26
1023.8
17
00:54
SE 3
10.00
Mostly
BKN100
46
36
55 45
68%
NA
NA
30.27
1024.2
Cloudy
16
23:54
Calm
10.00
Fair
CLR
46
35
66%
NA
NA
30.26
1024.2
16
22:54
Calm
10.00
Fair
CLR
47
34
61 %
NA
NA
30.27
1024.8
16
21:54
Calm
10.00
Mostly
BKN100
49
35
59%.
NA
NA
30.28
1025.3
Cloudy
16
20:54
SE 3
10.00
Mostly
BKN110
51
33
50%
NA
NA
30.28
1025.5
Cloudy
16
19:54
Calm
10.00
Overcast
OVC095
55
31
40%
NA
NA
30.28
1025.4
16
18:54
SE 3
10.00
A Few
FEW100
54
31
64 54
42%
NA
NA
30.27
1025.4
Clouds
16
17:54
S 6
10.00
Overcast
OVC110
57
31
37%
NA
NA
30.27
1025.0
16
16:54
SE 6
10.00
Mostly
BKN110
60
28
30%
NA
NA
30.26
1024.5
Cloudy
16
15:54
SE 6
10.00
A Few
FEW120
62
24
23%
NA
NA
30.25
1024.3
Clouds
16
14:54
SE 7
10.00
Fair
CLR
63
13
14%
NA
NA
30.25
1024:2
16
13:54
Vrbl5
10.00
Fair
CLR
62
22
21%
NA
NA
30.26
1024.3
16
12:54
S 3
10.00
Fair
CLR
59
17
59 27
19%
NA
NA
30.28
1025.3
16
11:54
Calm
10.00
Fair
CLR
54
24
31 %
NA
NA
30.32
1026.6
16
10:54
Calm
10.00
Fair
CLR
49
29
46%
NA
NA
30.33
1027A
16
09:54
Calm
10.00
Fair
CLR
41
30
65%
NA
NA
30.35
1028.3
16
08:54
Calm
10.00
Fair
CLR
34
28
79%
NA
NA
30.36
1028.7
16
07:54
Calm
10.00
Fair
CLR
31
27
85%
NA
NA
30.36
1028.6
16
06:54
Calm
10.00
Fair
CLR
28
25
33 28
88%
NA
NA
30.34
1028.0
16
05:54
Calm
10.00
Fair
CLR
28
25
88%
NA
NA
30.33
1027.5
16
04:54
Calm
10.00
Fair
CLR
29
25
85%
NA
NA
30.34
1027.6
16
0154
Calm
10.00
Fair
CLR •
29
25
85%
NA
NA
30.34
1027.6
16
02:54
S 3
10.00
Fair
CLR
30
26
85%
NA
NA
30.34
1027.7
16
01:54
Calm
10.00
Fair
CLR
31
26
82%
NA
NA
30.35
1027.8
16
00:54
Calm
10.00
Fair
CLR
32
27
49 32
82%
NA
NA
30.36
1028.2
15
23:54
Calm
10.00
Fair
CLR
33
28
82%
NA
NA
30.37
1028.6
15
22:54
Calm
10.00
Fair
CLR
36
28
73%
NA
NA
30.38
1029.0
15
21:54
Calm
10.00
Fair
CLR
37
27
67%
NA
NA
30.37
1029.0
15
20:54
Calm
10.00
Fair
CLR
41
25
53%
NA
NA
30.37
1029.0
15
19:54
SE 3
10.00
Fair
CLR
46
22
38%
NA
NA
30.37
1028.9
15
18:54
SE 3
10.00
Fair
CLR
49
21
57 49
33%
NA
NA
30.38
1029.3
15
17:54
S 3
10.00
Fair
CLR
52
20
28%
NA
NA
30.37
1028.8
15
16:54
S 5
10.00
Fair
CLR
53
21
28%
NA
NA
30.37
1028.7
15
15:54
SE 6
10.00
Fair
CLR
57
18
22%
NA
NA
30.36
1028.3
11/18/2015

National Weather Service
:Observed
Weather
for past 3 Days
Asheville,
Asheville
Region
15
14:54
Calm
10.00
Fair
CLR
56
21
26%
NA
NA
30.36
1028.3
15,
13:54
1- W 3
10.00
Fair
CLR
56
19
24%
NA
NA
30.38
1028.9
15
12:54
Calm
10.00
Fair
CLR
54
18
54 27 24%
NA
NA
30.42
1030.0
15
11:54
Calm
10.00
Fair
CLR
50
17
27%
NA
NA
30.45
1031.4
15
10:54
Calm
10.00
Fair
CLR
45
19
35%
NA
NA
30.47
1032.0
15
09:54
Calm
10.00
Fair
CLR
41
22
47%
NA
NA
30.49
1032,7
15
08:54
NW 3
10.00
Fair
CLR
36
22
57%
NA
NA
30.49
1033.0
15
07:54
NW 6
10.00
Fair
CLR
31
22
69%
25
NA
30.48
1032.E
D
Max. Min,
altimeter
sea
Page 3 of 3
Air Dw t Wind Heat level 1 hr 3 hr 6 hr
t (est) (mph) (mmi.
a Time Wind i.) Cond. Humidity Weather Sky p 6 hour Relative Chill Index (m.) (mb)
(oF) (°F)
e Temperature (OF) Pressure Precipitation (in.)
National Weather Service Back to previous page Last Modified: Febuary, 7 2012
Southern Region Headquarters J Privacy Policy
Fort Worth, Texas
Disdaimer
11/18/2015

W
NC®ENR
North Carolina Department_of Environment and Natural Resources
Division of Water Quality
Beverly .Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
January 15, 2010
Mr. Lew Bteiweis, A.A.E.
Asheville Regional Airport
6I .Terminal Drive, Suite I
Fletcher, NC 28732
Subject: General Permit No. NCG 150000
Asheville Regional Airport
COC NCG.1.50045
Buncombe County
Dear Mr. BIeiweis:
In accordance with your application for a discharge pen -nit received on December 10,
2009,.we are forwarding herewith the subject certificate of coverage to discharge under the subject
state = NPDES general pen -nit. This permit is.issued pursuant to the requirements of North
Carolina General Statute 143-215.1 and the Memorandum of Agreement between North Carolina
and'the US Environmental Protection Agency dated October 15, 2007 (or as subsequently
amended).
Please take notice that this certificate of coverage is not transferable except after notice to
the.Division of Water Quality. The Division of Water Quality -may require modification o.r
revocation and reissuance of the certificate of coverage.
_ This permit does not affect the legal requirements to obtain other permits which may be
required.by the Division of Water Quality or permits required by the Division of Land. Resources,
Coastal Area Management Act or any other federal or local governmental pen -nit that may be
required.
If you have any questions concerning this -pen -hit, please contact Jennifer. Jones at
telephone number [phone]
Sincerely,
ORIGINAL SIGNED BY
' KEN PICKLE
for Coleen H. Sullins
cc: Asheville Regional Office, Roger Edwards
Central Files
( Stor-nwater Permitting Unit Files?
Wetlands and Stormwater Branch one
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 NorthCafoli na
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: 919�07-63001 FAX: [phone] Customer Service: 1-877-623-6748 ,/ �l muralli/
Internet: www.ncwaterquality.org v✓ rJ
An Fm ial Onnnrtimity % AffirrnWiva Artinn Fmnlnvnr

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
GENERAL PERMIT NO. NCG150000
CERTIFICATE OF COVERAGE No. NCG150045
STORMWATER DISCHARGES
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful
standards and regulations" promulgated and adopted by the North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended,
Asheville Regional Airport
is hereby authorized to discharge stormwaterfrom a facility located at:
Asheville Regional Airport
61 Tenninal Drive
Fletcher
Buncombe County
to receiving waters designated as the French Broad River, a class B water in the French Broad
River Basin, in accordance with the effluent limitations, monitoring requirements, and other
conditions set forth in Parts I, 11, 1II, IV, V, and VI of General Pen -nit No. NCG150000 as
attached.
This certificate of coverage shall become. effective January 15, 2010.
This Certificate of Coverage shall remain -in effect for the duration of the General Pen -nit.
Signed this day January 15, 2010.
_ ORIGINAL SIGNED BY
KEN PICKLE
for Coleen H. Sullins., Director
Division of Water Quality
By the Authority of the Environmental Management Commission

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NCG150045 Asheville Regional Airport
Fletcher, NC
N
Latitude: 350 26' 10" N
W�— F Longitude: 820 32' 29" W
County: Buncombe
S Receiving Stream: French Broad River
Map Scale 1:23,151 Stream Class: B
Sub -basin: 04-03-02 (French Broad River Basin)
MW�rs.i:
r i
Facility Location
i-
ry

Jones, Jennifer
From:
Edwards, Roger
Sent:
Monday, January 11, 2010 1.29 PM
To:
Jones, Jennifer
Cc:
Wilson, Susan A
Subject:
RE: NCG150045 Asheville Regional Airport - Feb 11, 2010
Jennifer,
Proceed with issuance of the NCG 15. ARO-SWP will deal with any issue during inspection.
Roger Edwards - Roger. [e-mail]
North Carolina Dept. of Environment and Natural Resources
Asheville Regional Office
Division of Water Quality - Surface Water Protection
2090 U.S. 70 Highway
Swannanoa, NC 28778
Tel: [phone]
Fax: [phone]
Notice: E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and therefore may be disclosed to third
parties.
From: Jones, Jennifer
Sent: Monday, January 11, 2010 10:41 AM
To: Edwards, Roger
Cc: Jones, Jennifer
Subject: NCG150045 Asheville Regional Airport - Feb 11, 2010
Hi Roger,
We've received another NOI for an airport -T Asheville Regional Airport for their facility in Fletcher (Buncombe County) for coverage under
NCG15 (Airport permit). The site discharges stormivater into the French Broad River (B, ORW, HWQ). The NOI is attached.
Does the Asheville Regional. Office have any concerns about issuing this facility a COC for this general permit? If we don't receive any
objections, we'll issue the COC in 30 days.

s
Hydrology Report
Hydraflow Express Extension for AutoCADM Civil 3D® 2009 by Autodesk, Inc.
Grassy Swale B
Hydrograph type
= Rational
Storm frequency (yrs)
= 10
Drainage area (ac)
= 3.000
Rainfall Inten (inlhr)
= 7.058
OF Curve
= Buncombe.IDF
Q (cfs)
14.00
12.00
10.00
td
. M
4,00
0.00 —"
0
Runoff Hyd - Qp = 12,70 (cfs)
Runoff Hydrograph
10-yr frequency
5
Thursday, Mar 12 2009
Peak discharge (cfs) = 12.70
Time interval (min) = 1
Runoff coeff. (C) = 0.6
Tc by User.(min) = 5
Rec limb factor = 1.00
Hydrograph Volume = 3,811 (cuft); 0.087 (acft)
Q (cfs)
14.00
12.00
10,00
m
4,00
2.00
X- 0.00
10
Time (min)

Permit No. NCG150000
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF ENERGY, MINERAL, AND LAND RESOURCES
GENERAL PERMIT NO. NCG15QOOO
TO DISCHARGE STORMWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
For establishments primarily engaged in:
Furnishing Transportation by Air, or Operating Airports
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful
standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission and the Federal Water Pollution Control Act, as amended, this permit is
hereby issued to all owners or operators, hereafter permittees, which are covered by this permit as
evidenced by receipt of a Certificate of Coverage by the Environmental Management Commission to
allow the discharge of stormwater to the surface waters of North Carolina or separate storm
sewer systems conveying stormwater to surface waters in accordance with the terms and
conditions set forth herein.
Coverage under this General Permit is applicable to:
♦ All owners or operators of stormwater point source discharges associated with industrial
activity from Air Transportation facilities identified by the SIC Codes in Major Group 45;
including air transportation, scheduled, and air courier (SIC 4512 and 4513); air
transportation, non-scheduled (SIC 4522); airports, flying fields, except those maintained by
aviation clubs, and airport terminal services including: air traffic control, except government;
aircraft storage at airports; aircraft upholstery repair; airfreight handling at airports; airport
hangar rental; airport leasing, if operating airport; airport terminal services; and hangar
operations; and airport and aircraft service and maintenance including: aircraft cleaning and
janitorial service; aircraft servicing/repairing, except on a factory basis; vehicle maintenance
shops (including vehicle and equipment rehabilitation, cleaning, mechanical repairs, painting,
fueling, lubrication); and material handling facilities.
♦ Stormwater point source discharges from like industrial activities deemed by The Division of
Energy, Mineral, and Land Resources (DEMLR) to be similar operations in the process, or the
discharges, or the exposure of raw materials, intermediate products, by-products, final
products, or waste products.
The General Permit shall become effective on September 1, 2017.
The General Permit shall expire at midnight on August 31, 2022.
Signed this 21ST day of August, 2017.
Or{ginal signed by Tracy E. Davis
Tracy E. Davis, P.E., CPM, Director
Division of Energy, Mineral, and Land Resources
By the Authority of the Environmental Management Commission

r
Permit No. NCG150000
TABLE OF CONTENTS
PART I INTRODUCTION
Section A: General Permit Coverage
Section B: Permitted Activities
PART II STORMWATER POLLUTION PREVENTION PLAN
PART III QUALITATIVE MONITORING REQUIREMENTS
PART IV DEICING OPERATIONS
PART V STANDARD CONDITIONS FOR NPDES STORMWATER GENERAL PERMITS
Section A: Compliance and Liability
1. Compliance Schedule
2. Duty to Comply
3. Duty to Mitigate
4. Civil and Criminal Liability
S. Oil and Hazardous Substance Liability
6. Property Rights
7. Severability
8. Duty to Provide Information
9. Penalties for Tampering
10. Penalties for Falsification of Reports
11. Onshore or Offshore Construction
12. Duty to Reapply
Section B: General Conditions
1. General Permit Expiration
2. Transfers
3. When an Individual Permit May be Required
4. When an Individual Permit May be Requested
5. Signatory Requirements
6. General Permit Modification, Revocation and Reissuance, or
Termination
7. Certificate of Coverage Actions
8. Annual Administering and Compliance Monitoring Fee Requirements
0

Section C: Operation and Maintenance of Pollution Controls
1. Proper Operation and Maintenance
2. Need to Halt or Reduce not a Defense
3. Bypassing of Stormwater Control Facilities
Section D: Monitoring and Records
1.
Representative Sampling
2.
Recording Results
3.
Flow Measurements
4.
Test Procedures
5.
Representative Outfall
6.
Records Retention
7.
Inspection and Entry
Section E: Reporting Requirements
1.
Availability of Reports
2.
Non-Stormwater Discharges
3.
Planned Changes
4.
Anticipated Noncompliance
S.
Spills
6.
Bypass
7.
Twenty-four Hour Reporting
B.
Other Noncompliance
9.
Other Information
PART VI DEFINITIONS
Permit No. NCG150000
M

Permit No. NCG150000
PART I INTRODUCTION
SECTION A: GENERAL PERMIT COVERAGE
New facilities seeking coverage under this General Permit must register with the Division of
Energy, Mineral, and Land Resources by the filing of a Notice of Intent (N01) and applicable fees.
The N01 shall be submitted and a certificate of coverage issued prior to any discharge of
stormwater associated with industrial activity that has a point source discharge to the surface
waters of the state.
Any owner or operator not wishing to be covered or limited by this General Permit may make
application for an individual NPDES permit in accordance with NPDES procedures in 15A NCAC 2H
.0100, stating the reasons supporting the request. Any application for an individual permit should
be made at least 180 days prior to commencement of discharge and must be secured prior to
commencement of discharge.
This General Permit does not cover activities or discharges covered by an individual NPDES permit
until the individual permit has expired or has been revoked. Any person conducting an activity
covered by an individual permit but which could be covered by this General Permit may request
that the individual permit be revoked and coverage under this General Permit be provided.
If industrial materials and activities are not exposed to precipitation or runoff as described in 40
CFR §122.25(g), the facility may qualify for a No Exposure Exclusion from NPDES stormwater
discharge permit requirements. Any owner or operator wishing to obtain a No Exposure Exclusion
from permitting must submit a No Exposure Certification NO] form to the Division; must receive
approval by the Division; must maintain no exposure conditions unless authorized to -discharge
under a valid NPDES stormwater permit; and must recertify the No Exposure Exclusion annually.
Any facility may apply for new or continued coverage under this permit until a Total Maximum
Daily Load (TMDL) for pollutants for stormwater discharges is established. A TMDL sets a
pollutant -loading limit that affects a watershed, or portion of a watershed, draining to an impaired
water. For stormwater discharges to watersheds affected by a TMDL, coverage under this
permit may depend on the facility demonstrating stormwater discharges do not have
reasonable potential to violate applicable water quality standards for those pollutants. If the
Division determines that discharges have reasonable potential to cause water quality standard
violations, the facility shall apply for an individual permit 180 days prior to the expiration date of
this General Permit. Once that individual permit is effective the facility will no longer have
coverage under this General Permit. Note that the permittee must identify impaired waters
(scheduled for TMDL development) and waters already subject to a TMDL in the Site Overview, as
outlined in the Stormwater Pollution Prevention Plan (SPPP), Part II, Section A.1. A list of approved
TMDLs for the state of North Carolina can be found at
httn: ll nortal.ncdenr.prglweb/wglns /mtu/tmdl.
Part I Page 1 of 2

Permit No. NCG150000
SECTION B: PERMITTED ACTIVITIES
Until this permit expires or is modified or revoked, the permittee is authorized to discharge
stormwater to the surface waters of North Carolina or separate storm sewer system which has
been treated and managed in accordance with the terms and conditions of this General Permit and
the requirements of the permittee's Certificate of Coverage (COC). All discharges shall be in
accordance with the conditions of this permit.
The types of authorized discharges are dependent upon DEMLR approval and are detailed in the
permittee's individual Certificate of Coverage (COC). The permittee's COC is hereby incorporated
by reference into this General Permit. Any violation of the COC is a violation of this General Permit
and subject to enforcement action as provided in the General Permit.
Any other point source discharge to surface waters of the state is prohibited unless it is an
allowable non-stormwater discharge or is covered by another permit, authorization, or approval.
The stormwater discharges allowed by this General Permit shall not cause or contribute to
violations of Water Quality Standards. Discharges allowed by this permit must meet applicable
wetland standards as outlined in 15A NCAC 2B .0230 and .0231 and water quality certification
requirements as outlined in 15A NCAC 2H .0500.
This General Permit does not authorize discharges determined by the Division to be wastewaters
Wash water and rinse water must be directed to a sanitary sewer system or permitted by a
separate wastewater permit issued by the Department.
This permit does not relieve the permittee from responsibility for compliance with any other
applicable federal, state, or local law, rule, standard, ordinance, order, judgment, or decree.
Part I Page 2 of 2

Permit No. NCG 150000
PART II STORMWATER POLLUTION PREVENTION PLAN
The permittee shall develop and implement a Stormwater Pollution Prevention Plan (SPPP). This
plan shall be considered public information in accordance with Part V, Standard Conditions,
Section E of this General Permit. The SPPP shall include, at a minimum, the following items:
A. Site Overview. The Site Overview shall provide a description of the physical facility and the
potential pollutant sources that may be expected to contribute to contamination of stormwater
discharges. The Site Overview shall contain the following:
1. A general location map (USGS quadrangle map or equivalent map), showing the facility's
location in relation to transportation routes and surface waters; the name of the receiving
waters to which the stormwater outfalls discharge, or if the discharge is to a municipal
separate storm sewer system, the name of the municipality and the ultimate receiving
waters; and accurate latitude and longitude of the points of stormwater discharge
associated with industrial activity. The general location map (or alternatively the site map)
shall identify any receiving waters that are impaired (on the state's 303(d) list of impaired
waters) or if located in a watershed for which a TMDL has been established, and what
the parameters of concern are.
2. A narrative description of storage practices, loading and unloading activities, outdoor
process areas, dust or particulate generating or control processes, and waste disposal
practices. A narrative description of the potential pollutants that could be expected to be
present in the stormwater discharge from each outfall.
A site map drawn at a scale sufficient to clearly depict: the site property boundary; the
stormwater and/or wastewater discharge outfalls; all on -site and adjacent surface waters
and wetlands; industrial activity areas (including storage of materials, disposal areas,
process areas, loading and unloading areas, and haul roads); site topography and finished
grade; all drainage features and structures; drainage area boundaries and total contributing
area for each outfall; direction of flow in each drainage area; industrial activities occurring
in each drainage area; buildings; stormwater Best Management Practices (BMPs); and
impervious surfaces. The site map must indicate the percentage of each drainage area that
is impervious, and the site map must include a graphic scale indication and north arrow.
B. A list of significant spills or leaks of pollutants during the previous three (3) years and any
corrective actions taken to mitigate spill impacts.
C. Certification that the stormwater outfalls have been evaluated for the presence of non-
stormwater discharges. The permittee shall re -certify annually that the stormwater
outfalls have been evaluated for the presence of non-stormwater discharges. The
certification statement will be signed in accordance with the requirements found in Part V,
Standard Conditions, Section B, Paragraph 3.
D. Stormwater Management Strategy. The Stormwater Management Strategy shall contain a
narrative description of the materials management practices employed which control or
minimize the stormwater exposure of significant materials, including structural and
nonstructural measures. The Stormwater Management Strategy, at a minimum, shall
incorporate the following:
1. Feasibility Study. A review of the technical and economic feasibility of changing the
methods of operations and/or storage practices to eliminate or reduce exposure of
Part lI Page 1 of 4 Pages

Permit No. NCG150000
materials and processes to rainfall and run-on flows. Wherever practical, the permittee
shall prevent exposure of all storage areas, material handling operations, and
manufacturing or fueling operations. In areas where elimination of exposure is not
practical, this review shall document the feasibility of diverting the stormwater run-on
away from areas of potential contamination.
Secondary Containment Requirements and Records. Secondary containment is
required for: bulk storage of liquid materials: storage in any amount of Section 313 of Title
III of the Superfund Amendments and Reauthorization Act (SARA) water priority
chemicals; and storage in any amount of hazardous substances, in order to prevent leaks
and spills from contaminating stormwater runoff. A table or summary of all such tanks and
stored materials and their associated secondary containment areas shall be maintained. If
the secondary containment devices are connected to stormwater conveyance systems, the
connection shall be controlled by manually activated valves or other similar devices (which
shall be secured closed with a locking mechanism). Any stormwater that accumulates in
the containment area shall be at a minimum visually observed for color, foam, outfall
staining, visible sheens and dry weather flow, prior to release of the accumulated
stormwater. Accumulated stormwater shall be released if found to be uncontaminated by
any material. Records documenting the individual making the observation, the description
of the accumulated stormwater, and the date and time of the release shall be kept for a
period of five (5) years. For facilities subject to a federal oil Spill Prevention, Control, and
Countermeasure Plan (SPCC), any portion of the SPCC Plan fully compliant with the
requirements of this permit may be used to demonstrate compliance with this permit. The
Division may allow exceptions to secondary containment requirements for mobile
refuelers, as with the exemption provided by amendments to federal SPCC regulations, as
long as appropriate spill containment and/or diversionary structures or equipment is used
to prevent discharge to surface waters. Exceptions do not apply to refuelers or other
mobile tankage used primarily as bulk liquid material storage in a fixed location in place of
stationary containers.
BMP Summary. A listing of site structural and non-structural BMPs shall be provided. The
installation and implementation of BMPs shall be based on the assessment of the potential
for sources to contribute significant quantities of pollutants to stormwater discharges and
on data collected through monitoring of stormwater discharges. The BMP Summary shall
include a written record of the specific rationale for installation and implementation of the
selected site BMPs. The BMP Summary shall be reviewed and updated annually.
E. Spill Prevention and Response Procedures. The Spill Prevention and Response Procedures
(SPRP) shall incorporate an assessment of potential pollutant sources based on a materials
inventory of the facility. Facility personnel responsible for implementing the SPRP shall be
identified in a written list incorporated into the SPRP. Facility personnel responsible for
implementing the SPRP shall sign and date the SPRP acknowledging their responsibilities for
the plan. A responsible person shall be on -site during facility operations that have increased
potential to contaminate stormwater runoff through spills or exposure of materials associated
with the facility operations. The SPRP must be site stormwater specific. Therefore, an oil Spill
Prevention Control and Countermeasure plan (SPCC) may be a component of the SPRP, but may
not be sufficient to completely address the stormwater aspects of the SPRP. The common
elements of the SPCC with the SPRP may be incorporated by reference into the SPRP.
Part 11 Page 2 of 4 Pages

Permit No. NCG 150000
F. Preventative Maintenance and Good Housekeeping Program. A preventative maintenance
and good housekeeping program shall be developed and implemented. The program shall
address all stormwater control systems (if applicable), stormwater discharge outfalls, all on -
site and adjacent surface waters and wetlands, industrial activity areas (including material
storage areas, material handling areas, disposal areas, process areas, loading and unloading
areas, and haul roads), all drainage features and structures, and existing structural BMPs. The
program shall establish schedules of inspections, maintenance, and housekeeping activities of
stormwater control systems, as well as facility equipment, facility areas, and facility systems
that present a potential for stormwater exposure or stormwater pollution where not already
addressed under another element of the SPPP. Inspection of material handling areas and
regular cleaning schedules of these areas shall be incorporated into the program. Timely
compliance with the established schedules for inspections, maintenance, and housekeeping
shall be recorded and maintained in the SPPP.
G. Facility Inspections. Inspections of the facility and all stormwater systems shall occur as part
of the Preventative Maintenance and Good Housekeeping Program at a minimum on a semi-
annual schedule, once during the first half of the year (January to June), and once during the
second half (July to December), with at least 60 days separating inspection dates (unless
performed more frequently than semi-annually). These facility inspections are different from,
and in addition to, the stormwater discharge characteristic monitoring at the outfalls required
in Part IV B, C, and D of this permit.
H. Employee Training. Training programs shall be developed and training provided at a
minimum on an annual basis for facility personnel with responsibilities for: spill response and
cleanup, preventative maintenance activities, and for any of the facility's operations that have
the potential to contaminate stormwater runoff. The facility personnel responsible for
implementing the training shall be identified, and their annual training shall be documented by
the signature of each employee trained.
I. Responsible Party. The SPPP shall identify a specific position or positions responsible for the
overall coordination, development, implementation, and revision of the SPPP. Responsibilities
for all components of the SPPP shall be documented and position assignments provided.
J. SPPP Amendment and Annual Update. The permittee shall amend the SPPP whenever there
is a change in design, construction, operation, site drainage, maintenance, or configuration of
the physical features which may have a significant effect on the potential for the discharge of
pollutants to surface waters. All aspects of the SPPP shall be reviewed and updated on an
annual basis. The annual update shall include:
1. an updated list ofsignificant spills or leaks of pollutants for the previous three (3) years, or
the notation that no spills have occurred (element of the Site Overview);
2. a written re-certif cation that the stormwater outfalls have been evaluated for the presence of
non-stormwater discharges (element of the Site Overview);
3. a documented re-evaluation of the effectiveness of the on -site stormwater BMPs (BMP
Summary element of the Stormwater Management Strategy).
K. The Director may notify the permittee when the SPPP does not meet one or more of the
minimum requirements of the permit. Within 30 days of such notice, the permittee shall
submit a time schedule to the Director for modifying the SPPP to meet minimum requirements.
The permittee shall provide certification in writing (in accordance with Part V, Standard
Conditions, Section B, Paragraph 3) to the Director that the changes have been made.
Part 11 Page 3 of 4 Pages

Permit No. NCG150000
L. Vehicle and equipment cleaning
Describe measures that prevent or minimize contamination of the stormwater runoff from areas
used for vehicle and equipment cleaning, Perform all cleaning operations indoors, cover the
cleaning operations, ensure washwater drains to the sanitary sewer system, or collect stormwater
runoff from the cleaning area and provide treatment, recycling, proper disposal, or other
equivalent measures. If sanitary sewer is not available to the facility and cleaning operations take
place outdoors, the cleaning operations shall take place on grassed or graveled areas to prevent
point source discharges of the washwater into the storm drains or surface waters.
2. Where cleaning operations cannot be performed as described above and when operations are
performed in the vicinity of a storm drainage collection system, the drain is to be covered with a
portable drain cover during cleaning activities. Any excess standing water shall be removed and
properly handled prior to removing the drain cover.
3. For facilities that house or operate three or fewer emergency response vehicles staff the permittee
shall minimize runoff from vehicle washing shall describe measures that prevent or minimize
contamination of the stormwater runoff from areas used for vehicle and equipment cleaning to
the maximum extent practicable.
4. vehicle and equipment cleaning areas that drains to an open grass field and infiltrates
so there is no discharge is an acceptable practice since there is no discharge.
S. Except as provided above, the point source discharge of vehicle and equipment wash waters,
including tank cleaning operations, are not authorized by this permit and must be covered under a
separate NPDES permit or discharged to a sanitary sewer in accordance with applicable
industrial pretreatment requirements.
M. SPPP Implementation. The permittee shall implement the Stormwater Pollution Prevention
Plan and all appropriate BMPs consistent with the provisions of this permit, to control
contaminants entering surface waters via stormwater. Implementation of the SPPP shall
include documentation of all monitoring, measurements, inspections, maintenance activities,
and training provided to employees, including the log of the sampling data and of actions taken
to implement BMPs associated with the industrial activities, including vehicle maintenance
activities. Such documentation shall be kept on -site for a period of five (5) years and made
available to the Director or the Director's authorized representative upon request.
Part 11 Page 4 of 4 Pages

Permit No. NCG150000
PART Ill QUALITATIVE MONITORING REQUIREMENTS
The purpose of qualitative monitoring is to implement a quick and inexpensive way to evaluate the
effectiveness of the p&mittee's SPPP and to identify the potential for new sources of stormwater
pollution. Qualitative monitoring of stormwater outfalls must be performed during a measurable
storm event. Qualitative monitoring shall be performed as specified in Table 1. Monitoring
results shall be recorded on the Qualitative Monitoring Report forms available from the Division's
website. Completed forms shall be maintained on site with the SPPP.
Table 1 Qualitative Monitoring Requirements
Discharge Characteristics
Frequency'
Monitoring
Locationz
Color
Semi -Annual
SDO
Odor
Semi -Annual
SDO
Clarity
Semi -Annual
SDO
Floating Solids
Semi -Annual
SDO
Suspended Solids
Semi -Annual
SDO
Foam
Semi -Annual
SDO
Oil Sheen
Semi -Annual
SDO
Erosion or deposition at the outfall
Semi -Annual
SDO
Other obvious indicators of stormwater pollution
Semi -Annual
SDO
Footnotes:
1 Monitoring Frequency: Twice per year (unless other provisions of this permit prompt other frequency)
during a measureable storm event. The permittee must continue qualitative monitoring throughout the
permit renewal process.
Z Monitoring Location: Qualitative monitoring shall be performed at each stormwater discharge outfall
(SDO) associated with industrial activity. Monitoring must begin within the first 30 minutes of discharge,.
ve Monito
Qualitative monitoring is for the purposes of evaluating SPPP effectiveness, identifying the potential
for new sources of stormwater pollution, and prompting the permittee's response to pollution. If
the permittee repeatedly fails to respond effectively to correct problems identified by qualitative
monitoring, or if the discharge causes or contributes to a water quality standard violation, DEMLR
may but is not limited to:
• require that the permittee institute analytical sampling for suspect chemical and physical
parameters
• increase the frequency of qualitative monitoring;
• require the permittee to install structural stormwater controls;
• require the permittee to implement other stormwater control measures;
+ require the permittee to perform upstream and downstream monitoring to characterize
impacts on receiving waters
Part HI Page 1 of 2 Pages

Permit No. NCG 150000
Inability to monitor because of adverse weather conditions or lack of discharge during the
monitoring period must be documented in the SPPP and recorded on the Qualitative Monitoring
Report (see Adverse Weather in Definitions). Only SDOs discharging stormwater associated with
industrial activity must be monitored (See Definitions).
Part III Page 1 of 2 Pages

Permit No. NCG 150000
PART IV DEICING OPERATIONS
Airports that conduct aircraft and/or runway (including taxiways and ramps) deicing/anti-icing
operations shall maintain a record of annual usage rate of deicing/anti-icing chemicals. The
Division may require airports that conduct aircraft and/or runway (including taxiways and ramps)
deicing/anti-icing operations (other than for emergency reasons) to apply for an individual permit
if the usage is determined to be a common practice.
Part IV Page 1 of 1 Pages

Permit No. NCG 150000
PART V STANDARD CONDITIONS FOR NPDES STORMWATER GENERAL PERMITS
SECTION A: COMPLIANCE AND LIABILITY
1. Compliance Schedule
New and Existing Facilities applying for permit coverage for the first time: The Stormwater
Pollution Prevention Plan shall be developed and implemented within 12 months of the effective date
of the Certificate of Coverage and updated thereafter on an annual basis. Secondary containment, as
specified in Part II, of this general permit, shall be accomplished within 12 months of the effective
date of the issuance of the Certificate of Coverage.
Existing facilities previously permitted and applying for renewal under this General Permit:
All requirements, conditions, limitations, and controls contained in this permit (except new SPPP
elements in this permit renewal) shall become effective immediately upon issuance of the Certificate
of Coverage. New elements of the Stormwater Pollution Prevention Plan for this permit renewal
shall be developed and implemented within 6 months of the effective date of this general permit and
updated thereafter on an annual basis. Secondary containment, as specified in Part if, of this general
permit shall be accomplished prior to the beginning of discharges from the operation of the industrial
activity. Airports may add a cover page and/or note in their most current SWPPP as an
updated or modified SWPPP. The current SWPPP's must conform to all the permit
requirements. References that do not match modifications to the general permits shall
be incorporated with any future updates of the SWPPP or the permiitee may prepare
more "generic" SWPPP's that does not include specific permit section references.
2. Duty to Comply
The permittee must comply with all conditions of this general permit. Any permit noncompliance
constitutes a violation of the Clean Water Act (CWA) and is grounds for enforcement action.
a. The permittee shall comply with standards or prohibitions established under section 307(a) of
the CWA for toxic pollutants within the time provided in the regulations that establish these
standards or prohibitions, even if the general permit has not yet been modified to incorporate the
requirement [40 CFR 122.411.
b. The CWA provides that any person who violates section[s] 301, 302, 306, 307, 308, 318 or 405 of
the Act, or any permit condition or limitation implementing any such sections in a permit issued
under section 402, or any requirement imposed in a pretreatment program approved under
sections 402(a)(3) or 402(b)(8) of the Act, is subject to a civil penalty not to exceed $37,500 per
day for each violation [33 USC 1319(d) and 40 CFR 122.41(a)(2)].
The CWA provides that any person who negligently violates sections 301, 302, 306, 307, 308,
318, or 405 of the Act, or any condition or limitation implementing any of such sections in a
permit issued under section 402 of the Act, or any requirement imposed in a pretreatment
program approved under section 402(a)(3) or 402(b)(8) of the Act, is subject to criminal
penalties of $2,500 to $25,000 per day of violation, or imprisonment of not more than 1 year; or
both. In the case of a second or subsequent conviction for a negligent violation, a person shall be
subject to criminal penalties of not more than $50,000 per day of violation, or by imprisonment of
not more than 2 years, or both [33 USC 1319(c)(1) and 40 CFR 122.41(a)(2)].
d. Any person who knowingly violates this permit conditions or limitations is subject to criminal
penalties of $5,000 to $50,000 per day of violation, or imprisonment for not more than 3 years, or
both. In the case of second or subsequent conviction for a knowing violation, a person shall be
Part V Page 1 of 9 Pages

Permit No. NCG 150000
subject to criminal penalties of not more than $100,000 per day of violation, or imprisonment of
not more than 6 years, or both [33 USC 1319(c)(2) and 40 CFR 122.41(a)(2)].
Any person who knowingly violates section 301, 302, 303, 306, 307, 308, 318 or 405 of the Act, or
any permit condition or limitation implementing any of such sections in a permit issued under
section 402 of the Act, and who knows at that time that he thereby places another person in
imminent danger of death or serious bodily injury, shall, upon conviction, be subject to a fine of
not more than $250,000 or imprisonment of not more than 15 years, or both. In the case of a
second or subsequent conviction for a knowing endangerment violation, a person shall be subject
to a fine of not more than $500,000 or by imprisonment of not more than 30 years, or both. An
organization, as defined in section 309(c)(3)(B)(iii) of the CWA, shall, upon conviction of
violating the imminent danger provision, be subject to a fine of not more than $1,000,000 and can
be fined up to $2,000,000 for second or subsequent convictions [40 CFR 122.41(a)(2)].
f. Under state law, a civil penalty of not more than $25,000 per violation may be assessed against
any person who violates or fails to act in accordance with the terms, conditions, or requirements
of a permit [North Carolina General Statutes § 143-215.6A].
g. Any person may be assessed an administrative penalty by the Administrator for violating section
301, 302, 306, 307, 308, 31B or 405 of the Act, or any permit condition or limitation
implementing any of such sections in a permit issued under section 402 of this Act.
Administrative penalties for Class I violations are not to exceed $16,000 per violation, with the
maximum amount of any Class I penalty assessed not to exceed $37,500. Penalties for Class II
violations are not to exceed $16,000 per day for each day during which the violation continues,
with the maximum amount of any Class II penalty not to exceed $177,500 [33 USC 1319(g)(2)
and 40 CFR 122.41(a)(3)].
3, Duty to Mitigate
The permittee shall take all reasonable steps to minimize or prevent any discharge in violation of this
general permit which has a reasonable likelihood of adversely affecting human health or the
environment [40 CFR 122.41(d)].
4. Civil and Criminal Liability
Except as provided in this general permit regarding bypassing of stormwater control facilities,
nothing in this permit shall be construed to relieve the permittee from any responsibilities, liabilities,
or penalties for noncompliance pursuant to NCGS 143-215.3,143-215.6, or Section 309 of the Federal
Act, 33 USC 1319. Furthermore, the permittee is responsible for consequential damages, such as fish
kills, even though the responsibility for effective compliance may be temporarily suspended.
5. Oil and Hazardous Substance Liability
Nothing in this general permit shall be construed to preclude the institution of any legal action or
relieve the permittee from any responsibilities, liabilities, or penalties to which the permittee is or
may be subject to under NCGS 143-215.75 et seq. or Section 311 of the Federal Act, 33 USC 1321.
6. Proper Rights
The issuance of this general permit does not convey any property rights in either real or personal
property, or any exclusive privileges, nor does it authorize any injury to private property or any
invasion of personal rights, nor any infringement of Federal, State or local laws or regulations [40 CFR
122.41(g)].
7. Severability
The provisions of this general permit are severable, and if any provision of this general permit, or the
application of any provision of this general permit to any circumstances, is held invalid, the
Part V Page 2 of 9 Pages

Permit No. NCG 150000
application of such provision to other circumstances, and the remainder of this general permit, shall
not be affected thereby [NCGS 1SOB-23].
8. Duty to Provide Information
The permittee shall furnish to the Permit issuing Authority, within a reasonable time, information
which the Permit Issuing Authority may request to determine whether cause exists for modifying and
reissuing the general permit issued pursuant to this general permit or to determine compliance with
this general permit. The permittee shall also furnish to the Permit Issuing Authority upon request,
copies of records required to be kept by this general permit [40 CFR 122.41(h)].
Penalties for Tampering
The Clean Water Act provides that any person who falsifies, tampers with, or knowingly renders
inaccurate, any monitoring device or method required to be maintained under this general permit
shall, upon conviction, be punished by a fine of not more than $10,000 per violation, or by
imprisonment for not more than two years per violation, or by both. If a conviction of a person is for a
violation committed after a first conviction of such person under this paragraph, punishment is a fine
of not more than $20,000 per day of violation, or by imprisonment of not more than 4 years, or both
[40 CFR 122.41].
10. Penalties f r Falsification of Re
The Clean Water Act provides that any person who knowingly makes any false statement,
representation, or certification in any record or other document submitted or required to be
maintained under this general permit, including monitoring reports or reports of compliance or
noncompliance shall, upon conviction, be punished by a fine of not more than $10,000 per violation, or
by imprisonment for not more than two years per violation, or by both [40 CFR 122,41].
11. Onshore or Offshore Construction
This general permit does not authorize or approve the construction of any onshore or offshore
physical structures or facilities or the undertaking of any work in any navigable waters.
12. Duty to Reapply
Dischargers covered by this general permit need not submit a new Notice of Intent (N01) or renewal
request unless directed by the Division. If the Division chooses not to renew this general permit, the
permittee will be notified to apply for an individual permit [15A NCAC 02H .0127(e)].
SECTION B: GENERAL CONDITIONS
1. General Permit Expiration
General permits will be effective for a term not to exceed rive years, at the end of which the Division
may renew them after all public notice requirements have been satisfied. If a general permit is
renewed, existing permittees do not need to submit a renewal request or pay a renewal fee unless
directed by the Division. New applicants seeking coverage under a renewed general permit must
submit a Notice of Intent to be covered and obtain a Certificate of Coverage under the renewed
general permit [15A NCAC 02H .0127(e)].
2. Transfers
This general permit is not transferable to any person without prior written notice to and approval
from the Director in accordance with 40 CFR 122.61. The Director may condition approval in
accordance with NCGS 143-215.1, in particular NCGS 143-215.1(b)(4)b.2., and may require
modification or revocation and reissuance of the Certificate of Coverage, or a minor modification, to
identify the new permittee and incorporate such other requirements as may be necessary under the
CWA [40 CFR 122.41(I)(3), 122.61) or state statute. The Permittee is required to notify the
Division in writing in the event the permitted facility is sold or closed.
Part V Page 3 of 9 Pages

Permit No. NCG 150000
When an Individual Permit May be Rrq.Uired
The Director may require any owner/operator authorized to discharge under a certificate of coverage
issued pursuant to this general permit to apply for and obtain an individual permit or an alternative
general permit. Any interested person may petition the Director to take action under this paragraph.
Cases where an individual permit may be required include, but are not limited to, the following:
a. The discharger is a significant contributor of pollutants;
b. Conditions at the permitted site change, altering the constituents and/or characteristics of
the discharge such that the discharge no longer qualifies for a general permit;
C. The discharge violates the terms or conditions of this general permit;
d. A change has occurred in the availability of demonstrated technology or practices for the
control or abatement of pollutants applicable to the point source;
e. Effluent limitations are promulgated for the point sources covered by this general permit;
F. A water quality management plan containing requirements applicable to such point sources
is approved after the issuance of this general permit;
g. The Director determines at his or her own discretion that an individual permit is required.
4. When an Individual Permit May be Requested
Any permittee operating under this general permit may request to be excluded from the coverage of
this general permit by applying for an individual permit When an individual permit is issued to an
owner/operator the applicability of this general permit is automatically terminated on the effective
date of the individual permit.
S. Signatory Requirements
All applications, reports, or information submitted to the Permitting Issuing Authority shall be signed
and certified [40'CFR 122.41(k)].
a. All Notices of Intent to be covered under this general permit shall be signed as follows:
(1) For a corporation: by a responsible corporate officer. For the purpose of this Section, a
responsible corporate officer means: (a) a president, secretary, treasurer or vice president of
the corporation in charge of a principal business function, or any other person who performs
similar policy or decision making functions for the corporation, or (b) the manager of one or
more manufacturing, production, or operating facilities, provided, the manager is authorized
to make management decisions which govern the operation of the regulated facility including
having the explicit or implicit duty of making major capital investment recommendations,
and initiating and directing other comprehensive measures to assure long term
environmental compliance with environmental laws and regulations; the manager can
ensure that the necessary systems are established or actions taken to gather complete and
accurate information for permit application requirements; and where authority to sign
documents has been assigned or delegated to the manager in accordance with corporate
procedures.
(2) For a partnership or sole proprietorship: by a general partner or the proprietor, respectively;
or
(3) For a municipality, State, Federal, or other public agency: by either a principal executive
officer or ranking elected official [40 CFR 122.22].
b. All reports required by the general permit and other information requested by the Permit issuing
Authority shall be signed by a person described in paragraph a. above or by a duly authorized
representative of that person. A person is a duly authorized representative only if:
(1) The authorization is made in writing by a person described above;
Part V Page 4 of 9 Pages

Permit No. NCG 150000
(2) The authorization specified either an individual or a position having responsibility for the
overall operation of the regulated facility or activity, such as the position of plant manager,
operator of a well or well field, superintendent, a position of equivalent responsibility, or an
individual or position having overall responsibility for environmental matters for the company.
(A duly authorized representative may thus be either a named individual or any individual
occupying a named position.); and
(3) The written authorization is submitted to the Permit Issuing Authority [40 CFR 122.22].
c. Changes to authorization: If an authorization under paragraph (b) of this section is no longer
accurate because a different individual or position has responsibility for the overall operation of
the facility, a new authorization satisfying the requirements of paragraph (b) of this section must
be submitted to the Director prior to or together with any reports, information, or applications to
be signed by an authorized representative [40 CFR 122.22].
d. Certification. Any person signing a document under paragraphs a. or b. of this section, or
submitting an electronic report (e.g. eDMR), shall make the following certification (40 CFR
122.22]. NO OTHER STATEMENTS OF CERTIFICATION WILL BE ACCEPTED:
'7 certify, under penalty of law, that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qualified personnel
properlygother and evaluate the information submitted. Based on my inquiry of the person or
persons who manage the system, or those persons directly responsible forgathering the information,
the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. 1
am aware that there are significant penalties for submitting false information, including the
possibility of fines and imprisonment for knowing violations."
6. General Permit Modification. Revocation and Reissuance, or Termination
The issuance of this general permit does not prohibit the Permit Issuing Authority from reopening
and modifying the general permit, revoking and reissuing the general permit, or terminating the
general permit as allowed by the laws, rules, and regulations contained in Title 40, Code of Federal
Regulations, Parts 122 and 123; Title 15A of the North Carolina Administrative Code, Subchapter 2H
.0100; and North Carolina General Statute 143-215.1 et al.
After public notice and opportunity for a hearing, the general permit may be terminated for cause.
The fling of a request for a general permit modification, revocation and reissuance, or termination
does not stay any general permit condition. The Certificate of Coverage shall expire when the
general permit is terminated.
7. Certificate of Coverage Actions
Coverage under the general permit may be modified, revoked and reissued, or terminated for cause.
The notification of planned changes or anticipated noncompliance does not stay any general permit
condition [40 CFR 122.41(o].
8. Annual Administering and Compliance Monitoring Fee Requirements
The permittee must pay the administering and compliance monitoring fee within 30 (thirty) days
after being billed by the Division. Failure to pay the fee in timely manner in accordance with 15A
NCAC 21-1.0105(b)(2) may cause this Division to initiate action to revoke coverage under the general
permit.
Part V Page 5 of 9 Pages

Permit No, NCG150000
SECTION C: OPERATION AND MAINTENANCE OF POLLUTION CONTROLS
Fropi2T Operation and Maintenance
The permittee shall properly operate and maintain all facilities and systems of treatment and control
(and related appurtenances) which are installed or used by the permittee to achieve compliance with
the conditions of this permit. Proper operation and maintenance also includes adequate laboratory
controls and appropriate quality assurance procedures. This provision requires the operation of
back-up or auxiliary facilities or similar systems which are installed by a permittee only when the
operation is necessary to achieve compliance with the conditions of this permit [40 CFR 122.41(e)].
2. Need to Halt or Reduce Nqt g, Defense
It shall not be a defense for a permittee in an enforcement action that it would have been necessary to
halt or reduce the permitted activity to maintain compliance with the condition of this general permit
[40 CFR 122.41(c)].
3. Bypassing of Stormwater Control Facilities
Bypass is prohibited and the Director may take enforcement action against a permittee for bypass
unless:
a. Bypass was unavoidable to prevent loss of life, personal injury or severe property damage; and
b. There were no feasible alternatives to the bypass, such as the use of auxiliary control facilities,
retention of Stormwater, or maintenance during normal periods of equipment downtime or dry
weather. This condition is not satisfied if adequate backup controls should have been installed in
the exercise of reasonable engineering judgment to prevent a bypass which occurred during
normal periods of equipment downtime or preventive maintenance.
c. If the Director determines that it will meet the conditions listed above, the Director may approve
an anticipated bypass after considering its adverse effects.
SECTION D: MONITORING AND RECORDS
Representative Sampling,
Samples collected and measurements taken, as required herein, shall be characteristic of the volume
and nature of the permitted discharge. Analytical sampling shall be performed during a measureable
storm event. Samples shall be taken on a day and time that is characteristic of the discharge. All
samples shall be taken before the discharge joins or is diluted by any other waste stream, body of
water, or substance. Monitoring points as specified in this general permit shall not be changed
without notification to and approval of the Permit Issuing Authority [40 CFR 122.410)].
2. Recording Results
For each measurement or sample taken pursuant to the requirements of this general permit, the
permittee shall record the following information [40 CFR 122.411:
a. The date, exact place, and time of sampling or measurements;
b. The individual(s) who performed the sampling or measurements;
c. The date(s) analyses were performed;
d. The individual(s) who performed the analyses;
e. The analytical techniques or methods used; and
f. The results of such analyses.
3. Flow Measurements
Where required, appropriate flow measurement devices and methods consistent with accepted
scientific practices shall be selected and used to ensure the accuracy and reliability of measurements
of the volume of monitored discharges.
Part V Page 6 of 9 Pages

Permit No. NCG 150000
4. Test Procedures
Test procedures for the analysis of pollutants shall conform to the EMC regulations published
pursuant to NCGS 143-215.63 et seq, the Water and Air Quality Reporting Acts, and to regulations
published pursuant to Section 304(g), 33 USC 1314, of the Federal Water Pollution Control Act, as
Amended, and Regulation 40 CFR 136.
To meet the intent of the monitoring required by this general permit, all test procedures must
produce minimum detection and reporting levels and all data generated must be reported down to
the minimum detection or lower reporting level of the procedure. If no approved methods are
determined capable of achieving minimum detection and reporting levels below general permit
discharge requirements, then the most sensitive (method with the lowest possible detection and
reporting level) approved method must be used.
S. Records Retention
Qualitative monitoring shall be documented and records maintained at the facility along with the
Stormwater Pollution Prevention Plan (SPPP). Copies of analytical monitoring results shall also be
maintained on -site. The permittee shall retain records of all monitoring information, including
o all calibration and maintenance records,
o all original strip chart recordings for continuous monitoring instrumentation,
o copies of all reports required by this general permit, including Discharge Monitoring Reports
(DMRs) and eDMR or other electronic DMR report submissions.
o copies of all data used to complete the Notice of Intent to be covered by this general permit.
These records or copies shall be maintained for a period of at least 5 years from the date of the
sample, measurement, report or Notice of Intent application. This period may be extended by request
of the Director at any time [40 CFR 122.41].
6. Inspection and Entry
The permittee shall allow the Director, or an authorized representative (including an authorized
contractor acting as a representative of the Director), or in the case of a facility which discharges
through a municipal separate storm sewer system, an authorized representative of a municipal
operator or the separate storm sewer system receiving the discharge, upon the presentation of
credentials and other documents as may be required by law, to:
a. Enter upon the permittee's premises where a regulated facility or activity is located or conducted,
or where records must be kept under the conditions of this general permit;
b. Have access to and copy, at reasonable times, any records that must be kept under the conditions
of this general permit;
c. Inspect at reasonable times any facilities, equipment (including monitoring and control
equipment), practices, or operations regulated or required under this general permit; and
d. Sample or monitor at reasonable times, for the purposes of assuring permit compliance or as
otherwise authorized by the Clean Water Act, any substances or parameters at any location [40
CFR 122.41(i)].
Availability of Reports
Except for data determined to be confidential under NCGS 143-215.3 (a)(2) or Section 308 of the
Federal Act, 33 USC 1318, all reports prepared in accordance with the terms shall be available for
public inspection at the offices of the Division. As required by the Act, analytical data shall not be
considered confidential. Knowingly making any false statement on any such report may result in the
imposition of criminal penalties as provided for in NCGS 143-215.613 or in Section 309 of the Federal
Act.
Part V Page 7 of 9 Pages

Permit No. NCG 150000
8. Ion-Stormwater Discharges
If the storm event monitored in accordance with this general permit coincides with a non-stormwater
discharge, the permittee shall separately monitor all parameters as required under all other
applicable discharge permits and provide this information with the stormwater discharge monitoring
report
9. Planned Changes
The permittee shall give notice to the Director as soon as possible of any planned changes at the
permitted facility which could significantly alter the nature or quantity of pollutants discharged [40
CFR 122.41(1)]. This notification requirement includes pollutants which are not specifically listed in
the general permit or subject to notification requirements under 40 CFR Part 122.42 (a).
10. AntiCipated Noncompliance
The permittee shall give advance notice to the Director of any planned changes at the permitted
facility which may result in noncompliance with the general permit [40 CFR 122.41(l)(2)].
11. ills
The permittee shall report to the local DEMLR Regional Office, within 24 hours, all significant spills as
defined in Part IV of this general permit Additionally, the permittee shall report spills including: any
oil spill of 25 gallons or more, any spill regardless of amount that causes a sheen on surface waters,
any oil spill regardless of amount occurring within 100 feet of surface waters, and any oil spill less
than 25 gallons that cannot be cleaned up within 24 hours.
12. By-pass
Notice [40 CFR 122.41(m)(3)1:
a. Anticipated bypass. If the permittee knows in advance of the need for a bypass, it shall submit
prior notice, if possible at least ten days before the date of the bypass; including an evaluation of
the anticipated quality and affect of the bypass.
b. Unanticipated bypass. The permittee shall submit notice within 24 hours o€becoming aware of
an unanticipated bypass.
13. Twenty-four Hour Reporting,
a. The permittee shall report to the central office or the appropriate regional office any
noncompliance which may endanger health or the environment. Any information shall be
provided orally within 24 hours from the time the permittee became aware of the circumstances.
A written submission shall also be provided within 5 days of the time the permittee becomes
aware of the circumstances.
The written submission shall contain a description of the noncompliance, and its causes; the
period of noncompliance, including exact dates and times, and if the noncompliance has not
been corrected, the anticipated time compliance is expected to continue; and steps taken or
planned to reduce, eliminate, and prevent reoccurrence of the noncompliance [40 CFR
122.41(1) (6)].
b. The Director may waive the written report on a case -by -case basis for reports under this section
if the oral report has been received within 24 hours.'
c. Occurrences outside normal business hours may also be reported to the Division's Emergency
Response personnel at [phone], [phone] or [phone].
Part V Page 8 of 9 Pages

Permit No. NCG 150000
14. Other Noncompliance
The permittee shall report all instances of noncompliance not reported under 24 hour reporting at
the time monitoring reports are submitted [40 CFR 122.41(I)(7)].
1s. Other Information
Where the Permittee becomes aware that it failed to submit any relevant facts in a Notice of Intent to
be covered under this general permit, or submitted incorrect information in that Notice of Intent
application or in any report to the Director, it shall promptly submit such facts or information [40
CFR 122.41(1)(8)].
Part V Page 9 of 9 Pages

Permit No. NCG 150000
PART VI DEFINITIONS
Act
See Clean Water Act.
Adverse Weather
Adverse conditions are those that are dangerous or create inaccessibility for personnel,
such as local flooding, high winds, or electrical storms, or situations that otherwise make
sampling impractical. When adverse weather conditions prevent the collection of samples
during the sample period, the permittee must take a substitute sample or perform a
qulaitative assessment during the next qualifying storm event. Documentation of an
adverse event (with date, time and written narrative) and the rationale must be included
with your SPPP records. Adverse weather does not exempt the permittee from having to
file a monitoring report in accordance with the sampling schedule. Adverse events and
failures to monitor must also be explained and reported on the relevant DMR.
Allowable Non-Stormwater Discharges
This general permit regulates stormwater discharges. Non-stormwater discharges which
shall be allowed in the stormwater conveyance system are:
a. All other discharges that are authorized by a non-stormwater NPDES permit.
b. Uncontaminated groundwater, foundation drains, air -conditioner condensate without
added chemicals, springs, discharges of uncontaminated potable water, waterline and
fire hydrant flushing, water from footing drains, irrigation waters, flows from riparian
habitats and wetlands.
c. Discharges resulting from fire -fighting or fire -fighting training, or emergency shower or
eye wash as a result of use in the event of an emergency.
4. Best Management Prgctices (BMPs)
Measures or practices used to reduce the amount of pollution entering surface waters.
BMPs may take the form of a process, activity, or physical structure. More information on
BMPs can be found at: http://www.epa.gov/npde5Inatiolial-menu-best-management-
practices-bmps-stormwater#edu.
Bypass
A bypass is the known diversion of stormwater from any portion of a stormwater control
facility including the collection system, which is not a designed or established operating
mode for the facility.
6. Bulk Storage of Liquid Products
Liquid raw materials, manufactured products, waste materials or by-products with a single
above ground storage container having a capacity of greater than 660 gallons or with
multiple above ground storage containers located in close proximity to each other having a
total combined storage capacity of greater than 1,320 gallons.
Certificate of Cover=
The Certificate of Coverage (COC) is the cover sheet which accompanies a general permit
upon issuance and lists the facility name, location, receiving stream, river basin, effective
date of coverage under the general permit and is signed by the Director.
8. Clean „Water Act
The Federal Water Pollution Control Act, also known as the Clean Water Act (CWA), as
amended, 33 USC 1251, et. seq.
Part VI Page 1 of 4 Pages

Permit No. NCG150000
9. Division or DEMLR
The Division of Energy, Mineral, and Land Resources, Department of Environment and
Natural Resources.
10. Directo
The Director of the Division of Energy, Mineral, and Land Resources, the permit issuing
authority.
11. EMC
The North Carolina Environmental Management Commission.
12. Grab Sample
An individual sample collected instantaneously. Grab samples that will be analyzed
(quantitatively or qualitatively) must be taken within the first 30 minutes of discharge.
13. Hazardous Substance
Any substance designated under 40 CFR Part 116 pursuant to Section 311 of the Clean
Water Act.
14. Landfill
A disposal facility or part of a disposal facility where waste is placed in or on land and
which is not a land treatment facility, a surface impoundment, an injection well, a
hazardous waste long-term storage facility or a surface storage facility.
15. Measureable Storm Event
A measurable storm event is a storm event that results in an actual discharge from the permitted site
outfall. The previous measurable storm event must have been at least 72 hours prior. The 72-hour
storm interval may not apply if the permittee documents that a shorter interval is representative for
local storm events during the sampling period, and obtains approval from the local DEMLR Regional
Office. Two copies of this information and a written request letter shall be sent to the local DEMLR
Regional Office. After authorization by the DEMLR Regional Office, a written approval letter must be
kept on site in the permittee's SPPR
16, Municipal Separate Storm Sewer System (MS41
A stormwater collection system within an incorporated area of local self-government such
as a city or town.
17. No Exposure
A condition of no exposure means that all industrial materials and activities are protected
by a storm resistant shelter or acceptable storage containers to prevent exposure to rain,
snow, snowmelt, or runoff. Industrial materials or activities include, but are not limited to,
material handling equipment or activities, industrial machinery, raw materials,
intermediate products, by-products, final products, or waste products. DEMLR may grant a
No Exposure Exclusion from NPDES stormwater permitting requirements only if a facility
complies with the terms and conditions described in 40 CFR §122.26(g).
18. Notice of Intent
The state application form which, when submitted to the Division, officially indicates the
facility's notice of intent to seek coverage under a general permit.
19. Permit Issuing_ Authority
The Director of the Division of Energy, Mineral, and Land Resources (see "Director" above).
Part VI Page 2 of 4 Pages

Permit No. NCG 150000
20. Permittee
The owner or operator issued a Certificate of Coverage pursuant to this general permit.
21. Point Source Discharge of Stormwater
Any discernible, confined and discrete conveyance including, but not specifically limited to,
any pipe, ditch, channel, tunnel, conduit, well, or discrete fissure from which stormwater is
or may be discharged to waters of the state.
22. Representative Outfall Sta=
When it is established that the discharge of stormwater runoff from a single outfall is
representative of the discharges at multiple outfalls, the DEMLR may grant representative outfall
status. Representative outfall status allows the permittee to perform analytical monitoring at a
reduced number of outfalls.
23. Secondary Containment
Spill containment for the contents of the single largest tank within the containment
structure plus sufficient freeboard to contain the 25-year, 24-hour storm event.
24. Section 313 Water Priority_ Chemical
A chemical or chemical category which:
b. Is listed in 40 CFR 372.65 pursuant to Section 313 of Title III of the Superfund
Amendments and Reauthorization Act (SARA) of 1986, also titled the Emergency
Planning and Community Right -to -Know Act of 1986;
C. Is present at or above threshold levels at a facility subject to SARA title I11, Section
313 reporting requirements; and
d. Meets at least one of the following criteria:
i. Is listed in appendix D of 40 CFR part 122 on Table II (organic priority
pollutants), Table IIl (certain metals, cyanides, and phenols) or Table IV (certain
toxic pollutants and hazardous substances);
ii. Is listed as a hazardous substance pursuant to section 311(b)(2)(A) of the CWA
at 40 CFR 116.4; or
iii. Is a pollutant for which EPA has published acute or chronic water quality criteria.
25. Severe Property Damage
Substantial physical damage to property, damage to the control facilities which causes them
to become inoperable, or substantial and permanent loss of natural resources which can
reasonably be expected to occur in the absence of a bypass. Severe property damage does
not mean economic loss caused by delays in production.
26. Significant Materials
Includes, but is not limited to: raw materials; fuels; materials such as solvents, detergents,
and plastic pellets; finished materials such as metallic products; raw materials used in food
processing or production; hazardous substances designated under section 101(14) of
CERCLA; any chemical the facility is required to report pursuant to section 313 of Title III of
SARA; fertilizers; pesticides; and waste products such as ashes, slag and sludge that have
the potential to be released with stormwater discharges.
27. Significant Spills
Includes, but is not limited to: releases of oil or hazardous substances that exceed
reportable quantities under section 311 of the Clean Water Act (Ref: 40 CFR 110.3and 40
CFR 117.3) or section 102 of CERCLA (Ref: 40 CFR 302.4).
Part VI Page 3 of 4 Pages

Permit No. NCG 150000
28. Stormwater Discharge Outfall (SDO
The point of departure of stormwater from a discernible, confined, or discrete conveyance,
including but not limited to, storm sewer pipes, drainage ditches, channels, spillways, or
channelized collection areas, from which stormwater flows directly or indirectly into
waters of the State of North Carolina.
29. Stormwater Runoff
The flow of water which results from precipitation and which occurs immediately following
rainfall or snowmelt.
30. Stormwater Associated with Industrial Activity
The discharge from any point source which is used for collecting and conveying stormwater
and which is directly related to manufacturing, processing or raw material storage areas at
an industrial site. Facilities considered to be engaged in "industrial activities" include those
activities defined in 40 CFR 122.26(b)(14). The term does not include discharges from
facilities or activities excluded from the NPDES program.
31. Stormwater Pollution Prevention Plan (SPPP)
A comprehensive site -specific plan which details measures and practices to reduce
stormwater pollution and is based on an evaluation of the pollution potential of the site.
32, dal Maximum Daily Load (TMDL)
TMDLs are written plans for attaining and maintaining water quality standards, in all
seasons, for a specific water body and pollutant. A list of approved TMDLs for the state of
North Carolina can be found at ttp://deq.nc.gov/about/divisions/water-
resources/planning/modeling-assessment/tmdls.
33. Toxic Pollutant
Any pollutant listed as toxic under Section 307(a)(1) of the Clean Water Act.
34. Vehicle Maintenance Activity
Vehicle rehabilitation, mechanical repairs, painting, fueling, lubrication, vehicle cleaning
operations, or airport deicing operations.
35. Visible Sedimentation
Solid particulate matter, both mineral and organic, that has been or is being transported by
water, air, gravity, or ice from its site of origin which can be seen with the unaided eye.
36. 10-.yea[ 24-hour StorM Event
The maximum 24-hour precipitation event expected to be equaled or exceeded, on the average, once
in 10 years.
37. 25-year. 24 hour Storm Event
The maximum 24-hour precipitation event expected to be equaled or exceeded, on the
average, once in 25 years.
Part VI Page 4 of 4 Pages

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Vt

Asheville Airport Stormwater Pipe Inspection Report
June 1, 2018
DUKE
N RGY
Coal Combustion Products (CCP) Engineering is providing an engineering assessment of the
Asheville Regional Airport stormwater pipes. CCP Engineering has contracted with Bio-Nomic
Services (BNS) to perform video inspections. For this scope -of -work, BNS obtained new CCTV
videos of the stormwater pipes on February 15, 2018. CCP Engineering reviewed the videos,
and is providing this document as an assessment of the pipes with regard to overall structural
integrity and recommendations for repair and monitoring.
General Observations for Stormwater Pipes
A video log (Attachment A) of the pipes at Asheville Regional Airport was reviewed. See
Attachment C for the location of the pipes.
60" Stormwater Pipe - This is a 60 inch reinforced concrete pipe (RCP) that conveys
stormwater from the Asheville Regional Airport. The pipe is located under an ash structural fill
utilizing ash from the Asheville Steam Station. The pipe is separated from the ash by fill
material surrounding the pipe along the entire length. The inspection was conducted in three
parts, starting near the refueling station and hangers at a storm drain inlet catch basin and
traveling approximately 163.6 feet downstream to an underground junction box (Vault 1). The
second part of the inspection started from the discharge end of the pipe and traveled
approximately 56.3 feet to an underground junction box (Vault 2), and then an additional 1,059.7
feet upstream to Vault 1.
Catch Basin to Vault 1: The inspection of this section of the pipe revealed several instances of
cracking and infiltration. The most severe defects found included an infiltration runner at 92.4
feet, and a damaged joint at 153.1 feet that was offset and the reinforcing rebar was exposed.
Infiltration was also noted within Vault 1 above where the next section of the pipe started.
Discharge to Vault 2: The first section of this inspection was from the outfall to Vault 2, running
approximately 56.3 feet. Deposits were observed which were being trapped by the metal gate
at the outlet of the pipe. A fracture was identified at 51.4 feet, as well as some infiltration
staining at 51.4 feet and 56.3 feet.
Vault 2 to Vault 1: The inspection of this section of pipe revealed several instances of cracking
and infiltration of varying severities. The most severe structural defect observed was a hole with
visible reinforcement at 751.5 feet. Infiltration runners were observed at 304.5 feet, 457.9 feet,
531.6 feet, 733.2 feet, 751.5 feet, and 845.9 feet.
Compared to the 2017 inspection, the main structural change occurred where the hole is now
present at 751.5 feet from Vault 2, and there was an increase in infiltration rate at some
locations within the pipe. Based on NASSCO PACP grading system (see Attachment B), this
entire length of pipe was assigned an overall pipe score of 2.0 out of 5, which is considered fair
condition. Based on the structural defects observed within the pipe, CCP Engineering believes
the pipe appears to be in fair condition and has a moderate risk of failure.
15" Stormwater Pipe - This is a 15 inch RCP that conveys stormwater from Vault 2 out of the
system. The pipe is approximately 68.2 feet in length, and the invert of the pipe at the inlet end
was at the base of Vault 2; thus, it appeared all of the flow from this stormwater piping system
was being conveyed through this pipe. The inspection started from the discharge end of the
pipe and traveled upstream. The water level filled approximately 35% of the pipe at the
discharge end and slowly decreased moving upstream. The inspection identified cracking at
21.8 feet and 53.3 feet, as well as infiltration at several locations, including an infiltration runner

Asheville Airport Stormwater Pipe Inspection Report
.tune 1, 2018
at 28.6 feet.
t
�ENEDUKE
RGY.
Compared to the 2017 inspection, minor structural changes have occurred, as well as a slight
increase in infiltration rate. Based on NASSCO PACP grading system (see Attachment B), this
pipe was assigned an overall pipe score of 2.1 out of 5, which is considered fair condition. CCP
Engineering concurs with this score and believes the pipe appears to be in fair condition and
has a low risk of failure.
Recommendations for Stormwater Pipes
60" Stormwater Pipe - The joint with exposed reinforcement, located at 153.1 feet from the
catch basin near the hangars, as well as the hole located at 751.5 feet from Vault 2, should bo-
repaired to avoid further structural deterioration of the pipe in these areas. CCP Engineering
further recommends to continue with annual CCTV inspection of the pipe in order to monitor its
condition.
16" Stormwater Pipe - This pipe appears to be in fair condition, with no modifications or repairs
recommended at this time. CCP Engineering recommends performing an annual CCTV
inspection of this pipe.
ill
.'\,�1'►1C�A R0 ///
Q o f<<ipAL
9
30
�•
Timothy B. Goforth, PE
Engineer II
PACP Cert. # U-816-07004846
1
Alfred Dahrouge, PE
Manager CCP Regional Engineering
PACP Cert. # U-916-07005407

(� DUKE
ENERGY
Attachment A
Bio-Nomic Services, Inc. Inspection Report and Pictures

I =�
Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
PSR-1
Block No.
Pre Dir
Street name and No
AIRPORT
Street Typ...
Post Dir
US Manhole
C13-1
Total Length
164.7
Material
Reinforced Concrete...
Shape
Circular
Ill Value
0.62
DS Manhole
VAULT-1
Length surveyed
1 164.7
Location
1
Height
City
ASHEVILLE
Sewer Use
I Stormwater
SPR 84
MPR 110
W.D. Number
Purpose of Survey
Routine Assessment
SPRI 2.7
MPRI 1.7
Surveyed By
Sio-Nomic_Colt-Wimbish
Cert. No.
U-117.07006528
QSR 5241
QMR 4735
OPR
194
OPRI
2.0
inspection Dir.
Downstream
Insp Date
20180215
Time of Insp
09:69
US Rim -Inv.
DS Rim -Inv,
Location Details
Weather
Situation
$80
Additional Info
0.0 ft. Access Point Catch Basin
0.0 ft.
Water Level
11.9 ft.
Crack Multiple
19.3 ft.
Crack Longitudinal
45.2 ft.
Crack Longitudinal
56.5 ft.
Crack Longitudinal
60.6 ft.
Crack Multiple
61.6 ft.
Infiltration Stain
68.8 ft.
Infiltration Stain
89.0 ft.
Infiltration Stain
89.0 ft.
Infiltration Weeper
92.4 ft.
Infiltration Runner
104.8 ft.
Infiltration Dripper
153.1 ft.
Joint Offset Medium
CB-1
CB-1
5%
WITH I.S.
WITH I.S.
DUKE-ENG ASHEVILLE Page #: 2

Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
ccess a
Block No
Pre Dir
Street name and No
Street Typ...
Post Dir
PSR-1
AIRPORT
US Manhole
Total Length
Material
Shape
Ill: Value
C8-1
164.7
Reinforced Concrete...
Circular
0.62
DS Manhole
Length Surveyed
Location
Height
City
Se.ve' Use
VAULT-1
164.7
1
1
FASHEVILLE
5tormwater
SPR 84
MPR 110
W.Q. Number
Purpose of Survey
Routine Assessment
SPRI 2.7
MPRI 1.7
Surveyed By
Blo-Nomic_Colt-Wimbish
Cart. No.
U-117.07006528
QSR 5241
QMR 4735
OPR
OPRf
inspection Dir.
Insp Date
Time of Insp
194
2.0 1
Downstream
20180215
09:59
US Rim -Inv
DS Rim -Inv.
Location Details
Weather Situation
SSQ
Additional Info
153.1 ft. Infiltration Weeper
2
153.1 ft. Crack Longitudinal
2
153.1 ft. Surface Damage Reinforcement Visible
4
164.7 ft. Infiltration Dripper
3
IN VAULT
t S I
164 7 ft A P Ch b
VAULT 1
n peaa am er
VAULT-1
DUKE-ENG ASHEVILLE
Page #: 3

I�-
Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
Block No.
Pre Dir
Street name and No
Street Typ..-
Post Dir
PSR-1
AIRPORT
US Manhole
Total Length
Material
Shape
III Value
CB-1
164.7
Reinforced Concrete...
Circular
0.62
IDS Manhole
Length surveyed
Location
Height I
City
Sewer Use
VAULT-1
164.7
1
ASHEVILLE
Stormwater
Distance: 0.0 ft. Grade: 0
Condition: Access Point Catch Basin
Remarks: CB-1
Distance: 11.9 ft. Grade: 3
Condition: Crack Multiple
Remarks: WITH I.S.
Distance: 0.0 ft. Grade: 0
Condition: Water Level
Remarks: 5%
Distance: 19.3 ft. Grade: 2
Condition: Crack Longitudinal
Remarks: NIA
DUKE-ENG ASHEVILLE Page #: 4

Bio-Nomic Services
616 Rountree Road
Charlotte NC 28217
[phone]
PSR
Block No.
Pre Dir
Street name and No
Street Typ...
Post Dir
PSR-1
AIRPORT
I
US Manhole
Total Length
Material
Shape
ill Value
CB-1
164.7
Reinforced Concrete...
Circular
0.62
IDS Manhole
Length surveyed
Location
Height
City
Sewer Use
VAULT-1
164.7
ASHEVILLE
Stormwater
Dlstance: 45.2 ft. Grade: 2
Condition: Crack Longitudinal
Remarks: NIA
Distance: 60.6 ft. Grade: 3
Condition: Crack Multiple
Remarks: WITH I.S.
Distance: 56.5 ft. Grade: 2
Condition: Crack Longitudinal
Remarks: NIA
Distance: 61.6 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
DUKE-ENG ASHEVILLE Page #: 5

0 fr*tpwwww"
r.e...+ Ar.mo.
Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
Bloat No.
Pre Dir
Street name and No
Street Typ... Post Dir
PSR-1
AIRPORT
US Manhole
Total Length
Materiel
Shape
1/1 Value
CB-1
164.7
Reinforced Concrete...
Circular
0.62
DS Manhole
Length surveyed
Location
Height
City
Sewer Use
VAULT-1
164.7
ASHEVILLE
Stormwater
Distance: 68.8 ft. Grade: t
Condition: Infiltration Stain
Remarks: NIA
Distance: 89.0 ft. Grade: 2
Condition: Infiltration Weeper
Remarks: N/A
Distance: 89.0 ft. Grade: 1
Condition: Infiltration Stain
Remarks. NIA
Distance: 92.4 ft. Grade: 4
Condition: Infiltration Runner
Remarks: NIA
DUKE-ENG ASHEVILLE Page #: 6

Bio-Nornic Services
516 Rountree Road
Charlotte NC 28217
[phone]
01 PSR
Block No
Pre Dir
Street name and No
Street Typ,..
Post Dir
PSR-1
AIRPORT
US Manhole
Totai Length
Material
Shape
Ili Value
CB-1
154.7
Reinforced Concrete...
Circular
0.62
DS Manhole
Length surveyed
Location
Height
City
Sewer Use
VAULT-1
1 164.7
1
1FASHEVILLE
Stormwater
distance: 104.8 ft. Grade: 3
Condition: Infiltration Dripper
Remarks: NIA
Distance: 153.1 ft. Grade: 2
Condition: Infiltration Weeper
Remarks: NIA
Distance: 153.1 ft. Grade: 3
Condition: Joint Offset Medium
Remarks: NIA
Distance: 153.1 ft. Grade: 2
Condition: Crack Longitudinal
Remarks: NIA
DUKE-ENG ASHEVILLE Page M 7

Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
Biock No.
Pre Dir
Street name and No
Street Typ... Post Dir
PSR-1
AIRPORT
US Manhole
Total Length
Material
Shape
Ill Value
CB-1
164.7
Reinforced Concrete...
Circular
0.62
DS Manhole
Length surveyed
Location
Height
City
Sewer Use
VAULT-1
164.7
1
ASHEVILLE
Stormwater
Distance: 153.1 ft. Grade: 4
Condition: Surface Reinforcement Visible
Remarks: NIA
Distance: 164.7 ft. Grade: 0
Condition: Access Point Special Chamber
Remarks: VAULT-1
Distance: 164.7 ft. Grade: 3
Condition: Infiltration Dripper
Remarks: IN VAULT
DUKE-ENG ASHEVILLE Page # 8

Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
(704) 529-044o
PSR
PSR-2
Block No.
Pre Dir
Street name and No
AIRPORT
Street Typ...
Post Dir
US Manhole
VAULT-2
Totai Length
56.3
Matenal
Reinforced Concrete...
Shape
Circular
1/1 Value
NIA
DS Manhole
OUTFALL-1
Length surveyed
56.3
location
Height City
I I ASHEVILLE
Sewer Use
Stormwater
SPR 84
MPR 110
W.O. Number
Purpose of Survey
Routine Assessment
SPRI 2.7
MPRI 1.7
Surveyed By
13{o-Nom1q_Colt-Wimbish
Cert. No.
U-117-07006528
QSR 5241
QMR 4735
OPR
194
OPRI
2.0
lnspection Dir.
Upstream _T
lnsp Date
20180215
Time of Inep
11:30
US Rim -Inv
DS Rim -Inv.
Location Details
Weather
Situation
SSo
Additional Info
0.0 ft, Access Point Discharge Point
0.0 ft. Water Level
0 0 ft Deposits Settled Fine
51.4 ft, Fracture Longitudinal
51 A ft. Infiltration Stain
56.3 ft. Infiltration Stain
56.3 ft. Access Point Junction Box
OUTFALL-1
OUTFALL-1
0%
5%
VAULT-2
VAULT-2
DUKE-ENG ASHEVILLE
Page # 9

�x a n+r�nr�sr
FcM:'m �rYk*s
Bic-Nornic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
Block No.
Pre Dir
Street name and No
Street Typ__
Post Dr
PSR-2
AIRPORT
US Manhole
Total Length
Material
Shape
Ill Value
VAULT-2
56.3
Reinforced Concrete...
Circular
NIA
DS Manhole
Length surveyed
Location
Height
City
Sewer Use
OUTFALL-1
1 56.3
1
1
TiA-SHEVILLE I
Stormwater
Distance: 0.0 ft. Grade: 0
Condition: Access Point Discharge Point
Remarks: OUTFALL-1
Distance: 0.0 ft. Grade: 2
Condition: Deposits Settled Fine
Remarks: 5%
Distance: 0.0 ft. Grade: 0
Condition: Water Level
Remarks: 0%
Distance: 51.4 ft. Grade: 3
Condition: Fracture Longitudinal
Remarks: NIA
DUKE-ENG ASHEVILLE Page #: 10

Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
Block No
Pre Dir
Street name and No
Street Tyl
Post Dir
PSR-2
AIRPORT
US Manhole
Total Length
Matenal
Shape
hI Value
VAULT-2
56.3
Reinforced Concrete...
Circular
NIA
US Manhole
Length surveyed
Location
Height City
1
Sewe, ,;--�
OUTFALL-1
56.3
1 ASHEVILLE
Stormwater
Distance: 51.4 ft. Grade: 1
Condition: Infiltration Stain
Remarks: N/A
Distance: 56.3 ft Grade: Q
Condition: Access Point Junction Box
Remarks: VAULT-2
Distance: 56.3 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
DUKE-ENG ASHEVILLE Page #: 11

rro r m�ormenrx
13io-Nomic Service$
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
PSR-3
Block No.
Pre Dir
Street name and No
AIRPORT
Street Typ...
Post Dir
US Manhole
VAULT-1
Total Length
1059.7
Material
Reinforced Concrete...
Shape
Circular
ill Value
3.76
DS Manhole
VAULT-2
Length surveyed
1 1059.7
Location
1
Height City
ASHEVILLE
Sewer Use
Stormwater
SPR 84
MPR 110
W.O. Number
Purpose of Survey
Routine Assessment
SPRI 2.7
MPRI 1,7
Surveyed By
Bio-Nomic_Colt-Wimbish
Cert. No.
U-117-070D6528
QSR 5241
QMR 4735
CPR
194
OPRI
2.0
Inspection Dir.
Upstream
Insp Date
20180215
Time of Insp
11:49
US Rim -Inv.
DS Rim -Inv.
Location Details
Weather
Situation
SSO
Additional Info
0.0 ft_ Access Point Junction Box
0.0 ft_ Water Level
53.4 ft. Crack Longitudinal
62.5 ft. Infiltration Stain
110.8 ft. Infiltration Stain
119.6 ft. Infiltration Stain
135.2 ft. Infiltration Stain
183.7 ft. Crack Circumferential
215.1 ft. Crack Multiple
215.1 ft. Infiltration Weeper
222.4 ft.
Crack Multiple
224.2 ft.
Crack Multiple
224.2 ft
Infiltration Weeper
232.8 ft. Infiltration Stain
VAULT-2
VAULT-2
5%
WITH I.S.
WITH I.S.
flUKE-ENG ASHEVILLE Page #: 12

Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
Block No.
Pre Dir
Street name and No
Street Typ..
Post Dir
PSR�3
AIRPORT
US Manhole
Total Length
Malenal
Shape
III Value
VAULT-1
1059.7
Reinforced Concrete...
Circular
3.76
DS Manhole
Length surveyed
Location
Height
City
Sewer Use
VAULT-2
1059.7
1
ASHEVILLE
Stormwater
SPR 84
MPR 110
W.O. Number
Purpose of Survey
Routine Assessment
SPRI 2.7
MPRI
1.7
Surveyed By
Bio-NomicColt-Wimbish
Cori. No.
U-117-07006528
QSR 5241
QMR 4736
OPR
OPRI
Inspection D _
Insp Date
Time of Insp
194
2.0
Upstream
20180215
11:49
US Rim -Inv.
DS Rim -Inv,
Location Details
Weather
Situation
SSO
Additional Info
241.0 fL Infiltration Weeper
2
241.0 ft. Infiltration Stain
1
248.4 ft. Infiltration Stain
1
256.4 ft. Infiltration Stain
1
272.6 ft. Infiltration Stain
1
304.5 ft Infiltration Runner
4
304.5 ft. Crack Multiple
3
337.8 ft. Infiltration Stain
1
345.1 ft. Crack Multiple
3
353.0 ft. Crack Longitudinal
2
353.0 ft, Infiltration Weeper
2
360.9 ft. Infiltration Stain
1
372 1 ft Crack Multiple
3
377.0 ft. Infiltration Stain
1
393.5 ft Infiltration Stain
1
402.3 ft. Infiltration Stain
1
DUKE-ENG ASHEVILLE Page#: 13

Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
PSR-3
Block No
Pre Dir
Street name and No
AIRPORT
Street Typ___
Post Dir
US Manhole
VAULT-1
Total Length
1059.7
Material
Reinforced Concrete...
Shape
Circular
Ill Value
3.76
OS Manhole
VAULT-2
Length surveyed
1059.7
Location
Height City
ASHEVILLE
Sewer Use
Stormwater
SPR 84
MPR 110
W.O. Number
Purpose of SLF:eg
Routine Assessment
SPRI 2.7
MPRI 1,7
Surveyed By
Bio-NCmIC_Calt-wmblSh
Cart. No.
U-117-07006528
QSR 5241
QMR 4735
OPR
194
OPRI
2.0
Inspection Dir
Upstream
Insp Dale
20180215
Time of Insp
11:49
US Rim-inv.
DS Rim -Inv.
Location Details
Weather
Situation
SSO
Additional Info
418.3 ft
Crack Multiple
3
418.3 ft.
Infiltration Dripper
3
425.8 ft.
Infiltration Dripper
3
427.5 ft.
Crack Multiple
3
433.4 ft.
Crack Multiple
3
433.4 ft.
Infiltration Stain
1
450.7 Q.
Crack Circumferential
1
450 7 fl.
Infiltration Weeper
2
457.9 ft.
Infiltration Runner
4
483.0 ft.
Infiltration Weeper
2
490.5 ft.
Infiltration Stain
1
499.5 ft.
Infiltration Stain
1
507.5 ft.
Infiltration Stain
1
515.1 ft.
Infiltration Weeper
2
522.3 ft.
Infiltration Stain
1
531.6 ft.
Crack Multiple
3
DUKE-ENG ASHEVILLE Page #: 14

0 TWEAWW-1.11041
Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
Block No
Pre Dir
5:reel name and No
Street Typ...
Post Dir
PSR.3
AIRPORT
US Manhole
Total Length
Material
Shape
III Value
VAULT-1
1059.7
Reinforced Concrete...
Circular
3.76
DS Manhole
Length surveyed
Location
Height
City
Sewer Use
VAULT-2
1059J
1
FASHIEVILLE
Stormwater
SPR 84
MPR 110
W.O. Number
Purrx se of Survey
Routine Assessment
SPRI 2.7
MPRI 1.7
Surveyed By
Bio-Nomic_Colt-Wimbish
Cert. No.
U-117-07006528
QSR 5241
QMR 4735
OPR
OPRI
Inspacnon Orr
Insp Date
Time of insp
194
2.0
Upstream
20180215
11:49
US Rim -Inv.
DS Rini
Location Details
Weather
Situation
SSO
Additional Info
531 6 It Infiltration Runner
4
539.2 ft. Infiltration Stain
1
548.6 ft. Infiltration Stain
1
555.6 ft. Infiltration Stain
1
556.6 Fi, Crack Spiral
z
563.1 ft. Infiltration Stain
1
572.2 ft. Infiltration Stain
1
580.0 ft. Infiltration Stain
1
587.4 ft. Infiltration Stain
1
596.4 ft. Infiltration Stain
1
636.6 ft. Infiltration Weeper
2
644.3 ft. Infiltration Stain
1
733.2 ft. Infiltration Runner
4
741.6 ft. Crack Multiple
3
751,5 ft. Surface Reinforcement
5
Projecting
751.5 ft. Infiltration Runner
4
751.5 ft. Hole Void Visible
5
DUKE-ENG ASHEVILLE Page #: 15

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Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
Block No.
Pre Dir
Street name and No
Street Typ...
Post Dir
PSR-3
AIRPORT
US Manhole
Total Length
Material
Shape
III Value
VAULT-1
1059.7
Reinforced Concrete...
Circular
3.76
IDS Manhole
Length surveyed
Location
Height
1
City
Sewer Use
VAULT-2
1059.7
1
ASHEVILLE
Stormwater
Distance: 0.0 ft. Grade: 0
Condition: Access Point Junction Box
Remarks. VAULT-2
Distance: 53.4 ft. Grade: 2
Condition: Crack Longitudinal
Remarks: NIA
Distance: 0.0 ft. Grade: 0
Condition: Water Level
Remarks: 5%
Distance: 62.5 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
DUKE-ENG ASHEVILLE Page #: 18

Bio-Nomic Services
516 Rountree Road
Chariotte NC 28217
[phone]
01 PSR
Block No.
Pre Dir
Street name and Na
Street 7yp..
Post Dir
PSR-3
AIRPORT
US Manhole
Total Length
Ma<e­ a
Shape
M Value
VAULT-1
1059.7
Reinforced Concrete...
Circular
3.76
DS Manhole
Length surveyed
Location
Height
City
Sewer Use
VAULT-2
1059.7
LASHEVILLE
Stormwater
SPR 84
MPR 110
W.O. Number
Pur, -
-
MPRI 1.7
Routine Assessment
SPRI 2.7
Surveyed By
Bic-Nomic_Colt-Wirribish
Cert. No.
U-117-07006528
QSR 5241
QMR 4735
OPR
OPRI
Inspection Dir.
Insp Date
Time of Insp
194
2.0
Upstream
20180215
11:49
US Rim -Inv,
DS Rim -Inv
Location Details
Weather
Situation
SSO
Additional Info
765.5 ft. Crack Multiple
3
765.5 ft. Infiltration Stain
1
773.6 ft. Infiltration Stain
1
781.7 ft Crack Longitudinal
2
829.7 ft. Infiltration Stain
1
838.5 ft. Crack Circumferential
1
WITH I S.
845.9 ft. infiltration Runner
4
902.6 ft. Infiltration Dripper
3
902.E ft. Crack Multiple
3
918.6 ft. Infiltration Weeper
2
926.8 ft. Infiltration Stain
1
975.4 ft. Infiltration Weeper
2
1023.5 ft Infiltration Stain
1
1047.9 ft Infiltration Stain
1
1056.5 ft Infiltration Weeper
2
1059.7 ft. Access Point Special Chamber
VAULT-1
VAULT-1
DUKE-ENG ASHEVILLE Page #- 16

V —=
Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
PSR-3
Block No.
Pre Dir
Street name and No
AIRPORT
Street Typ...
I Post Dir
US Manhole
Total Length
Material
Shape
Ill Value
VAULT-1
1059.7
Reinforced Concrete...
Circular
3.76
DS Manhole
Length surveyed
Location
Haight
1
City
Sewer Use
VAULT-2
1 1059.7
1
1
ASHEVILLE
Stormwater
Distance: 110.8 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
blstance: 135.2 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
-10
Distance: 119.6 ft. Grade:
Condition: Infiltration Stain
Remarks: NIA
Distance: 183.7 ft. Grade: 1
Condition: Crack Circumferential
Remarks: NIA
DUKE-ENG ASHEVILLE Page #: 19

rM r mra+rroae�
� Acrmn sv.oaE.rs
Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
PSR-3
Block No.
Pre fir
Street name and No
AIRPORT
Street Typ...
Post Dir
US Manhole
Total Length
Material
Shape
Ill Value
VAULT-t
1059.7
Reinforced Concrete...
Circular
3.76
IDS Manhole
Length surveyed
Location
Height
city
Sewer Use
VAULT-2
1059.7
ASHEVILLE
Stormwater
Distance: 215.1 ft. Grade: 3
Condition: Crack Multiple
Remarks: WITH I.S.
Distance: 222.4 ft. Grade: 3
Condition: Crack Multiple
Remarks: WITH I.S.
Distance: 215.1 ft. Grade: 2
Condition: Infiltration Weeper
Remarks: NIA
Distance: 224.2 ft. Grade: 3
Condition: Crack Multiple
Remarks. NIA
DUKE-ENG ASHEVILLE Page #: 20

JIMIly&Pwwo~
Bio-Nomic Services
516 Rountree Road
Charlotte NC 26217
[phone]
PSR
Block No.
Pre Dir
Street name and No
Street Typ...
Post Dir
PSR-3
AIRPORT
US Manhole
Total Length
MaterW
Shape
Ill Value
VAULT-1
1059.7
Reinforced Concrete...
Circular
3.76
IDS Manhole
Length surveyed
Location
Height
City
Sewer Use
VAULT-2
1 1059.7
1
1
ASHEVILLE
Stormwater
Distance: 224.2 ft. Grade: 2
Condition: Infiltration Weeper
Remarks: NIA
Distance: 241.0 fl. Grade: 2
Condition: Infiltration Weeper
Remarks: NIA
Distance: 232.8 ft. Grade: 1
Condition: Infiltration Stain
Remarks: N/A
Distance: 241.0 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
DUKE-ENG ASHEVILLE Page M 21

0 rarr
mvmft. sp wn
Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
PSR-3
Block No.
Pre Dir
Street name and No
AIRPORT
Street Typ.,
Post Dr
US Manhole
Total Length
Material
Shape
IFI Value
VAULT-1
1059.7
Reinforced Concrete...
Circular
3.76
DS Manhole
Length surveyed
Location
Height City
Sewer Use
VAULT-2
1059.7
ASHEVILLE
Stormwater
"Distance: 248.4 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
Distance: 272.6 ft. Grade: 1
Condition: Infiltration Stain
Remarks: N/A
Distance: 256.4 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
Distance: 304.5 ft. Grade: 4
Condition: Infiltration Runner
Remarks: NIA
DUKE-ENG ASHEVILLE Page #: 22

PT-f nV�wlNM
­snrrxs
MEW
Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
Block No
Pre Dir
Street name and No
Street Typ.,.
Post 0 r
PSR-3
AIRPORT
uS Manhole
Total Length
Matena
Shape
Ill Value
VAULT-i
1059.7
Reinforced Concrete_..
Circular
3.76
DS Manhole
Length Surveyed
Location
Height City
Sewer Use
VAULT-2
1059.7
ASHEVILLE
Stormwater
Distance: 304.5 ft. Grade: 3
Condition: Crack Multiple
Remarks: NIA
Distance: 345.1 ft. Grade: 3
Condition: Crack Multiple
Remarks: NIA ::1
Distance: 337.8 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
Distance: 353.0 ft. Grade
Condition: Crack Longitudinal
Remarks: NIA
DUKE-ENG ASHEVILLE
Rage #: 23

Hio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
Block No.
Pre Dir
Street name and No
Street Typ...
Post Dir
PSR-3
AIRPORT
US Manhole
Total Length
Material
Shape
III Value
VAULT-1
1059.7
Reinforced Concrete—
Circular
3.76
DS Manhole
Length surveyed
Location
Height
City
Sewer Use
VAULT-2
1059.7
ASHEVILLE
Stormwater
Distance: 353.0 ft. Grade: 2
Condition: Infiltration Weeper
Remarks: NIA
Distance: 372.1 ft. Grade: 3
Condition: Crack Multiple
Remarks: NIA
Distance: 360.9 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
Distance: 377.0 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
DUKE-ENG ASHEVILLE Page #: 24

Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
Block No.
Pre Dir
Street name and No
Street Typ...
Post Dir
PSR-3
AIRPORT
I
US Manhole
Total Length
Matenai
S11ape
III Value
VAULT-1
1059.7
Reinforced Concrete...
Circular
3.76
DS Manhole
Length surveyed
Location
Height
City
Sewer Use
VAULT-2
1059.7
1
1
ASHEVILLE
Stormwater
Distance: 393.5 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
Distance: 418.3 ft. Grade: 3
Condition: Crack Multiple
Remarks: N/A
Distance: 402.3 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
Distance: 418.3 ft. Grade: 3
Condition: Infiltration Dripper
Remarks: N/A
DUKE-ENG ASHEVILLE Page #: 25

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Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
PSR-3
Block No.
Pre Dir
Scree+ na-e ard N
AIRPORT
Streel Typ..,
Post Dir
US Manhole
Total Length
Material
Shape
III Value
VAULT-1
1059.7
Reinforced Concrete...
Circular
3.76
DS Manhole
Length surveyed
Location
Height
G!
Sewer
VAULT-2
1059.7 1
FASHEVILLE
Stormwater
Distance: 425.8 ft. Grade: 3
Condition: Infiltration Dripper
Remarks: NIA
Distance: 433.4 ft. Grade: 3
Condition: Crack Multiple
Remarks: N/A
Distance: 427.5 ft. Grade: 3
Condition: Crack Multiple
Remarks: N/A
Distance: 433.4 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
DUKE-ENG ASHEVILLE Page #: 26

Sio-Nomie Services
516 Rountree Road
Char#otte NC 28217
[phone]
PSR Block No
Pre Dir
Street name and No
Street Typ.,.
Post Dir
PSR-3
AIRPORT
I
U$ Manhole
ToW Length
Material
Shape
III Value
VAULT-1
1059.7
Reinforced Concrete...
Circular
3.76
D$ Manhole
Length surveyed
Location
Height
1
City
Sewer Use
VAULT-2
1059.7
1
1
ASHEVILLE
Stormwater
Distance: 450.7 ft. Grade: 1
Condition: Crack Circumferential
Remarks: NIA
Distance: 457.9 ft. Grade: 4
Condition: Infiltration Runner
Remarks: NIA
Distance: 450.7 ft. Grade: 2
Condition: Infiltration Weeper
Remarks: NIA
Distance: 4810 ft. Grade: 2
Condition: Infiltration Weeper
Remarks: NIA
DUKE-ENG ASHEVILLE Page #: 27

JJIM rF* l A.V..W01
Imi. n SOPP401a
Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
PSR3
Block No.
Pre Dir
Street name and No
AIRPORT
Street Typ... I Post Dir
US Manhole
Total Length
Matenal
Shape
III Value
VAULT-1
1059.7
Reinforced Concrete...
Circular
3.76
DS Manhole
Length surveyed
Location
Height
City
1
Sewer Use
VAULT-2
1059.7
1
1
ASHEVILLE
Storrnwater
Distance: 490.5 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
Distance: 507.5 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
Distance: 499.5 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
Distance: 515.1 ft. Grade: 2
Condition: Infiltration Weeper
Remarks: NIA
DUKE-ENG ASHEVILLE Page #: 28

Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
Block No
Pre Dir
Street name and No
Street Typ...
Post Dir
PSR-3
AIRPORT
I
US Manhoie
Total Length
Matenai
Shape
dt Value
VAULT-1
1059.7
Reinforced Concrete...
Circular
3.76
IDS Manhole
Length Surveyed
Location
Height
City
Sewer Use
VAULT-2
1059.7
ASHEVILLE
Stormwater
Distance: 522.3 ft. Grade: 1
Condition: Infiltration Stain
Remarks, N/A
Distance: 531.6 ft. Grade: 4
Condition: Infiltration Runner
Remarks: NIA
Distance: 531.6 ft. Grade: 3
Condition: Crack Multiple
Remarks: NIA
Distance: 539.2 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
DUKE-ENG ASHEVILLE Page #: 29

Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
Block No.
Pre Dir
Street name and No
Street Typ...
Post Dir
PSR-3
AIRPORT
US Manhole
Total Length
Matenal
Shape
Ill Value
VAULT-1
1059.7
Reinforced Concrete...
Circular
3.76
DS Manhole
Length surveyed
Location
Height
City
Sewer Use
VAULT-2
1 1059.7 1
1
ASHEVILLE
Stormwater
Distance: 548.6 ft. Grade: 1
Condition: Infiltration Stain
Remarks: N/A
Distance: 556.6 ft. Grade: 2
Condition: Crack Spiral
Remarks: NIA
Distance: 555.6 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
Distance: 563.1 ft. Grade: 1
Condition: Infiltration Stairs
Remarks: NIA
DUKE-ENG ASHEVILLE Page #: K

Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
Block No.
Pre Dir
Streei name and No
Street Typ...
Post Dir
PSR-3
AIRPORT
I
US Manhole
Totat Length
Material
Shape
III Value
VAULT-1
1059.7
Reinforced Concrete...
Circular
3.76
DS Manhole
Length surveyed
Location
Height
1
City
Sewer Use
VAULT-2 1
1059.7
1
1
ASHEVILLE
Stormwater
Distance: 572.2 ft. Grade: 1
Conditlon: Infiltration Stain
Remarks: NIA
Distance: 587.4 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
Distance: 580.0 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
Distance: 596.4 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
DUKE-ENG ASHEVILLE Page #: 31

Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
Block No.
Pre Dir
Street name and No
Street Typ,..
Post Dir
PSR4
AIRPORT
US Manhole
Total Length
Matenal
Shape
III Value
VAULT-1
1059.7
Reinforced Concrete...
Circular
3.76
DS Manhole
Length surveyed
Location
Height
Sewer use
VAULT-2
1059.7
TASHEVILLE
Stormwater
Distance: 636.6lit. Grade: 2
Condition: Infiltration Weeper
Remarks: NIA
Distance: 733.2 ft. Grade: 4
Condition: Infiltration Runner
Remarks: NIA
Distance: 644.3 ft. Grade: 1
Condition: Infiltration Stairs
Remarks: NIA
Distance: 741.6 ft. Grade: 3
Condition: Crack Multiple
Remarks: NIA
DUKE-ENG ASHEVILLE Page #: 32

Elio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
Block No
Pre Dir
Street name and No
Street Typ _ Post Dir
PSR4
AIRPORT
US Manhole
Total Length
Material
Shape
IA Value
VAULT-1
1059.7
Reinforced Concrete...
Circular
3.76
OS Manhole
Length Surveyed
Location
Height
City
Sewer Use
VAULT-2
1 1059.7 J
I
TASHEVILLE
I Stormwater
Dletance: 751.5 ft. Grade: 5
Condition: Surface Reinforcement Projecting
Remarks: NIA
Distance: 751.5 ft. Grade: 5
i Condition: Hole Void Visible
Remarks: NIA
Distance: 751.5 ft. Grade: 4
Condition: Infiltration Runner
Remarks: NIA
11
Distance: 765.5 ft. Grade: 3
Condition: Crack Multiple
Remarks: NIA
DUKE-ENG ASHEVILLE Page #: 33

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-.r.� anrxa
Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
PSR-3
Block No
Pre Dir
Street name and Ne
AIRPORT
Street Typ,.,
Post Dir
US Manhole
Total Length
h:1a!eria!
Shape
III Value
VAULT-1
1059.7
Reinforced Concrete...
Circular
3.76
DS Manhole
Length surveyed
Location
Height
city
Sewer Use
VAULT-2
1059.7
JASHEVILLE
Stormwater
Distance: 765.5 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
Distance: 781.7 ft. Grade: 2
Condition: Crack Longitudinal
Remarks: NIA
Distance: 773.6 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
Distance: 829.7 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
DUKE-ENG ASHEVILLE Page#: 34

rk,1111
Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
Block No.
Pre Dir
Street name and No
Street Typ-
Post Dir
PSR-3
AIRPORT
US Manhole
Total Length
Vaterial
Shape
ilt Value
VAULT-1
1059.7
Reinforced Concrete...
Circular
3.76
hS Manhole
Length surveyed
Location
Height
City
Sewer Use
VAULT-2
1059.7
ASHEVILLE
Stormwater
Distance: 838.5 ft. Grade: 1
Condition: Crack Circumferential
Remarks: WITH I,S.
Distance: 902.6 ft. Grade: 3
Condition: Infiltration Dripper
Remarks: N/A
Distance: 845.9 ft. Grade: 4
Condition: Infiltration Runner
Remarks: NIA
11
Distance: 902.6 ft. Grade: 3
Condition: Crack Multiple
Remarks: NIA
DUKE-ENG ASHEVILLE Page #: 35

Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
Block No.
Pre Dir
Street name and No
Street Typ...
Post Dir
PSR-3
AIRPORT
US Manhole
Total Length
Material
Shape
Ill Value
VAULTA
1059.7
Reinforced Concrete...
Circular
3.76
DS Manhole
Length surveyed
Location
Height
City
FASHEVILLE
Sewer Use
VAULT-2
1 1059.7
t
I
Stormwater
Distance: 918.6 ft. Grade: 2
Condition: Infiltration Weeper
Remarks: NIA
Distance: 975.4 ft. Grade: 2
Condition: Infiltration Weeper
Remarks: NIA
Distance: 926.8 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
Distance: 1023.5 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
DUKE-ENG ASHEVILLE Page #: 36

Bio-Nomic Services
516 Rountree Road
Charlotte NC 26217
[phone]
PSR
Block No.
Pre Dir
Street name and No
Street Typ...
Post Dir
PSR-3
AIRPORT
US Manhole
Total Length
Maienal
Shape
1/1 Value
VAULT-1
1059.7
Reinforced Concrete...
Circular
3.76
DS Manhole
Length surveyed
Location
Height
City
Sewer Use
VAULT-2
1 1059.7
1
1
ASHEVILLE
Stormwater
Distance: 1047.9 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
Distance: 1059.7 ft. Grade: 0
Condition: Access Point Special Chamber
Remarks: VAULT-1
dlatance: 1056.5 ft. Grade: 2
Condition: Infiltration Weeper
Remarks: N!A
DUKE-ENG ASHEVILLE Page #: 37

�M ! M]tiM.RY
nwe� sp.oreer
Bio-Nornic Services
516 Rountree Road
Charlotte NC 28217
[phone]
01 PSR
PSR-4
Block No.
Pre Dir
Street name and No
AIRPORT
Street Typ...
Post Dir
US Manhole
VAULT-2
Total Length
68.2
Material
Reinforced Concrete...
Shape
Circular
Ill Value
0.51
DS Manhole
OUTFALL-2
Length surveyed
68.2
Location
Height
city
ASHEVILLE
Sewer Use
Stormwater
SPR 5
MPR 10
W.O. Number
Purpose of Survey
Routine Assessment
SPRI 2.5
MPRI 2.0
Surveyed By
Bio-Nomic_Colt-Wimbish
Cert. No.
U-117-07006528
OSR 3121
QMR 4122
OPR
15
OPRI
2.1
Inspection Dir. Insp Date
Upstream 20180215
Time of Insp
15:44
US Rim -Inv.
DS Rim -Inv.
Location Details
Weather
I Situation
SSo
Additional info
0.0 ft. Access Point Discharge Point
0.0 ft.
Water Level
20.7 ft.
Water Level
21.8 ft.
Crack Multiple
22.9 ft.
Infiltration Weeper
28.5 ft.
Water Level
28.6 ft.
Infiltration Runner
36.9 ft.
Infiltration Stain
53.3 h-
Fracture Circumferential
53.3 ft.
Infiltration Stain
65.9 ft.
Deposits Attached Encrustation
68.2 ft.
Access Point Junction Box
OUTFALL-2
et
OUTFALL-2
35%
25%
3
2
5%
4
1
2
1
2
VAULT-2
1S
VAULT-2
DUKE-ENG ASHEVILLE
Page #: 38

yam}
Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
(704) 529-OM
PSR
Block No.
Pre Dir
Street name and No
Street Typ...
Post Dir
PSR-4
AIRPORT
I
US Manhole
Total Length
Matenal
Shape
0 Value
VAULT-2
68.2
Reinforced Concrete..-
Circular
0-51
DS Manhole
Length surveyed
Location
Height
City
Sewer Use
OUTFALL-2
68.2
1
1 ASHEVILLE
Stormwater
Distance: 0.0 ft. Grade: 0
Condition: Access Point Discharge Paint
Remarks: OUTFALL-2
Distance: 20 7 tt. Grade: 0
Condition: Water Level
Remarks: 25%
❑istance: 0.0 ft. Grade: 0
Condition: Water Level
Remarks: 35%
SHEVILLE
IRPOR
Distance: 21.8 ft. Grade: 3
Condition: Crack Multiple
Remarks: NIA
DUKE-ENG ASHEVILLE Page #: 39

AkM
her �
- %wr+iv1
Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
Black No
Pre Dir
Srreet name and No
Street Typ..,
Post Dir
PSR-4
AIRPORT
US Manhole
Total Length
Maienal
Shape
Ill Value
VAULT-2
68.2
Reinforced Concrete...
Circular
0.51
DS Manhole
Length surveyed
Location
Height City
1
Sewer Use
OUTFALL-2
68.2
1
1 ASHEVILLE
Stormwater
Distance: 22.9 ft. Grade: 2
Condition: Infiltration Weeper
Remarks: NIA
Distance: 28.6 ft. Grade: 4
Condition: Infiltration Runner
Remarks: NIA
Distance: 28.5 ft. Grade: 0
Condition: Water Level
Remarks: 5%
distance: 36.9 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
DUKE-ENG ASHEVILLE Page #: 40

Bio-Nomic Services
516 Rountree Road
Charlotte NC 28217
[phone]
PSR
Block No.
Pre Dir
Street name and No
Street Typ..
Post Dir
PSR4
AIRPORT
I
US Manhole
Total Length
Metenai
St,ape
III Value
VAULT-2
68.2
Reinforced Concrete...
Circular
0.51
DS Manhole
length surveyed
Location
Height City
Sewer Use
OUTFALL-2
68.2 1
ASHEVILLE
Stormwater
Distance: 53.3 ft. Grade: 2
Condition: Fracture Circumferential
Remarks: NIA
Distance: 65.9 ft. Grade: 2
Condition: Deposits Attached Encrustation
Remarks: NIA
Distance: 53.3 ft. Grade: 1
Condition: Infiltration Stain
Remarks: NIA
Distance: 68.2 ft. Grade: 0
Condition: Access Point Junction Box
Remarks: VAULT-2
DUKE-ENG ASHEVILLE Page #: 41

,/ok, DUKE
*"ENERGY
Attachment B
NASSCO PACP Grading System

PACP Defect rating
Defect Grades: Grades have two categories: Structural and O&M
defects A severity level of 1 to 5 is entered based on the PACP code
Chosen. Level description is on the fight.
Structural defect observations are defects in the pipe structure.
(example: broken pipe, fractures and collapsed pipe)
O & M (Operation & maintenance) defect observations are items
that cause blockages on the inside of the pipe (example Roots.
grease and rocks)
The PACP sconng system is dependant on the quality of the inspection. Errors in coding will affect the score
5 - Most significant defect grade
4 - Significant
3 - Moderate defect grade
2 - Minor to Moderate defect grade
1 - Minor defect grade
CoforS shown above are from the t.T pipes inspection Software
NASSCO PACP scoring system breakdown
QUICK RATINGS: A four character way to prioritize a segment of pipe
based on the number and level of defects entered
Highest
2"a Highest
Severity
Severity
5
4
2
1
# of
tt of
occurrences
occurrences
QSR QUICK STRUCTURAL RATING
Rating based on Structural defect observations
entered into an inspection.
Ex. Broken, cracks. fractures, holes, deformed
and collapsed pipe
QUICK MAINTENANCE RATING
i QMR ]Rating based on O&M defect observations
entered into an inspection.
Ex. Grease, roots, debris, ect.
Some Quick Ratings will have an letter in the 2"° or 4l" position.
Each letter defines how many times over it occurred over Nine.
QUICK OVERALL RATING
QOR Rating based on combining O&M and Structural
Example: 4C3A The level 4 defect was entered between (C) 20 and 24 times
defect observations entered into an inspection.
The lave$ 3 defect was (A) entered 10 to 14 times
NOTE: This is only available inside 1.T.Pipes
software and is not part of the NASSCO PACP
A 10-14 E 30-34 1 50-54 M 70-74 Q 90-94 U 110-114 Y 130-134
system.
8 15-19 F 35-39 J 55-59 N 75-79 R 95-99 V 115-119 Z 135 +
C 20-24 G 40-44 K 60-64 O 80-84 S 100-104 W 120-124
The scores are based on a 1 to 5 system. 1 is minor defect
D 25-29 H 45-49 L 65-69 P 85-89 T 105-109 X 125-129
grade (good) and 5 is most significant defects (bad).
SPR STRUCTURAL PIPE RATING
Sum of all structural defect severity
levels
MPR MAINTENANCE PIPE RATING
Sum of all maintenance defect severity levels
OPR -1 OVERALL PIPE RATING
Sum of al! structural & maintenance
defect severity levels
LSPR' STRUCTURAL PIPE RATING INDEX
Average of the Structural Pipe Rating
MP7R! MAINTENANCE PIPE RATING INDEX
Average of the Maintenance (O&M) Pipe Rating
OPRI OVERALL PIPE RATING INDEX
Average of both Structural & Maintenance
(O&M) Pipe Ratings
PIPE RATINGS: The sum of the defect severity ratings entered into an
inspection. Add (Sum) all the Structural and/or Maintenance observation
severity levels together.
Example: a line has 3-level 1, 2-level 2 and 24evel 5 defects. The rate for
this line would be 17 (3+4+10).
CONTINUOUS DEFECTS: Effect the scoring system by calculating
defects over a length of pipe and adding it to the scoring system. It is
calculated by dividing the length of the continuous defect by 5 and adding
that number of defects to the scoring system.
Example: level 3 defect was 100ft long start to end. 10015=20 20
instances of level 3 will be added to the scoring system.
PIPE RATINGS INDEX: The average of the Pipe Ratings
entered into an inspection. Divide the Pipe Rating by the
number of Structural and/or Maintenance observation.
Example: The pipe rating example of 17 used above would
have a pipe rating index of 2.4.
Pipe rating/number of observation 17 17 = 2.4
These scones are based on a f to 5 system. 1 is nothing in
foreseeable future (good) and 5 is complete failure likely in the
near future (bad).
Additional information can be found in Appendix D of the NASSCO PACP manual. (version 6 September 2010)

%DUKE
ENERGY..
Attachment C
Pipe Location Map

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o Discharge Point
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N DUKE
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Asheville Airport
Stormwater Pipe

Duke Energy Company
For Internal Use only
Record is located on the
Video (Vault) LanShare
To view this file click the following link:
11tesIa\CCP\Ashevi11e\ASH ANL-INSP 2018 A
Please Note:
• Record(s) listed above may have viewer restrictions
causing you to be unable to view the data information
or the actual record. If you have questions related to
these types of records and their limited access
contact your management.

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