NC0031038_Fact Sheet_20220810

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
NCDEQ / DWR / NPDES
EXPEDITED FACT SHEET - NPDES PERMIT RENEWAL
NPDES Permit NC0031038
Sydney Carpenter, Compliance & Expedited Permitting Unit / 919-707-3712 July 2022
Facility Information
Applicant/Facility Name
Colonial Pipeline Company
Charlotte Delivery Facility
Applicant Address
PO Box 87, Paw Creek, NC 28130
Facility Address
7524 Kenstead Circle, Charlotte, NC 28214
Permitted Flow (MGD)
No flow limit
Type of Waste
100% Industrial, fuel (bulk storage)
Facility Class
PC-1
County
Mecklenburg
Permit Status
Renewal
Regional Office
MRO
Stream Characteristics
Receiving Stream
(All Outfalls)
UT to Gum Branch
Stream
Classification
WS-IV
Summer 7Q10 (cfs)
0
Stream Segment
11-120-5
Winter 7Q10 (cfs)
0
Drainage basin
Catawba
30Q2 (cfs)
0
Subbasin
03-08-34
Average Flow (cfs)
0
303(d) Listed
Not Impaired
IWC (%)
100%
HUC
030501011403
Facility Summary
This facility discharges 100% industrial wastewater. This facility serves a Surface -Water Pollution Control
System for stormwater in proximity to above -ground storage tanks (ASTs) for surface bulk -storage of
ethanol and petroleum hydrocarbon fuels with capacity exceeding one million gallons, and fuel -truck
loading racks. This facility utilizes the following treatment units:
• Oil -water separator
• Diked secondary containment for ASTs and appurtenant piping
• Retention pond
Each respective point -source outfall discharging via a hand -operated valve (normally closed); Outfalls 002-
009 discharge from petroleum storage tank secondary containment areas (TSCA), which contains ballast
ground cover; Outfall 010 (MYO) discharges from a 3000-gallon oil/water separator that collects
stormwater from pipeline manifold yard subsurface drains:
OUTFALL
Outfall 002
Outfall 003
Outfall 004
Outfall 005
Outfall 006
Outfall 007
Outfall 008
Outfall 009
Outfall 010
LAT/LONG °
N35.2843°, W80.9355°
N35.2849°, W80.9355°
N35.2877°, W80.9348°
N35.2874°, W80.9339°
N35.2858°, W80.9337°
N35.2847°, W80.9327°
N35.2849°, W80.9344°
N35.2832°, W80.9330°
N35.2863°, W80.9327°
PRODUCT
Gasoline AST
Gasoline AST
Gasoline AST
Gasoline AST
Gasoline AST
Distillate AST
Distillate AST
Distillate AST
(MYO) Manifold Yard Outfall -
under -drain, product valves and
piping; oil/water separator (runoff
includes artesian spring water
originating up gradient)
Fact Sheet for Permit Renewal
July 2022 - NPDES Permit NC0031038 - Page 1

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
Permit writers should note that this facility also has coverage under the groundwater remediation general
permit (NCG510207) at the site. There could be potential for contamination issues at the facility.
Renewal Summary
This renewal contains the following proposed changes:
• Reduced the monitoring frequency to Quarterly for MTBE for Outfalls 002, 003, 004, 005, 006,
007, 008, and 009 in Section A. (1) as the parameter was not detected upon review of the DMR data
from the past five years.
• Monitoring frequency for MTBE is being kept at Monthly for Outfall 010 as the parameter was
detected upon review of the DMR data from the past five years. Per the Sept 2005 Guidance on
Petroleum Bulk -Storage facilities, footnote #9 has been added to Section A. (1) for Outfall 010,
requiring that an action plan to reduce MTBE be submitted within 12 months of the permit effective
date.
• Added a limit for Benzene for Outfalls 003 and 010 in Section A. (1), as the Reasonable Potential
Analysis (RPA) showed a potential to exceed water quality standards. Monthly monitoring kept for
all outfalls.
• Added footnote #3 for Oil & Grease to the effluent table in Section A. (1), per the 2005 Guidance
on Petroleum Bulk -Storage facilities.
• Removed the limit for Total Recoverable Phenolics as the RPA did not show a potential to exceed
water quality standards, however monitoring kept at Monthly per the 2005 Guidance on Petroleum
Bulk -Storage facilities.
• Corrected the parameter code for Oil & Grease from [00556] to [00552].
• Updated the language for the WET testing footnote #7, per permitting guidance for Petroleum
Bulk -Storage facilities.
• Updated the language in Section A. (2) to include the new electronic submission information for
testing results and additional language for the Quarterly monitoring requirement if the permittee
fails a WET test, per updated guidance on Petroleum Bulk -Storage facilities.
• Added Section A. (4) and footnote #10 to the effluent table in Section A. (1) for EPA Method 625,
per updated guidance on Petroleum Bulk -Storage facilities.
• Updated Section A. (5) Electronic Reporting of Discharge Monitoring Reports to reflect current
federal requirements.
Compliance History
Charlotte Delivery Facility has only three enforcements on file for entire permit history, all of which
occurred during the previous permit cycle; one case for Toluene and Benzene violations, and two cases for
TSS and Turbidity violations. Most recent inspection (Feb 2020) showed the facility to be in compliance.
Three NOVs have been issued during the current permit cycle for Turbidity limit violations and a
Late/Missing DMR for June 2021.
Whole Effluent Toxicity (WET) Testing
In accordance with current permitting strategies for Petroleum Bulk -Storage facilities (see Sept 2005
Strategy), WET testing is required in this permit as Acute Annual toxicity monitoring [TAE6C] with
Fathead Minnow (Pimephales promelas).
This facility has passed every annual test for every outfall during the past four years (March 2018-March
2021), therefore monitoring has been kept at Annual. However, if the permittee fails any TOX test, they
will be required to test each subsequent discharge until receiving a "pass" result, and monitoring will be
changed to Quarterly thereafter.
Fact Sheet for Permit Renewal
July 2022 - NPDES Permit NC0031038 - Page 2

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
EPA Method 625
Charlotte Delivery Facility conducts semi-annual monitoring for EPA Method 625 parameters for each
outfall. A review of the lab reports results for monitoring performed between May 2017 and November
2021 showed no parameter hits for all outfalls with the exception of Outfall 002, which had one hit for
Benzyl Alcohol on April 21, 2020.
Monitoring for EPA Method 625 will be kept in the permit as a parameter was detected. See the findings of
the RPA for the parameter in the section below and attached.
RPA for Bulk Storage (2016 Generic RPA for non -hardness dependent)
A reasonable potential analysis was conducted on effluent toxicant data collected between May 2017 and
November 2021. The following flows (Qw) were used in the RPAs for each respective outfall, based on the
maximum, monthly average flow during the past four years.
Outfall
Flow (MGD)
002
0.1341
003
0.1002
004
0.2206
005
0.097
006
0.097
Outfall
Flow (MGD)
007
0.0973
008
0.137
009
0.0979
010
0.2805
Based on this analysis, the following permitting actions are proposed for this permit:
• Benzene effluent data for Outfalls 003 and 010 showed a reasonable potential to exceed WQS of
1.19 µg/L; a limit is being added for these outfalls. Monthly monitoring kept for all other outfalls
per current permitting strategy for Petroleum Bulk -Storage facilities
• Toluene effluent data for Outfalls 003 and 010 showed no reasonable potential to exceed WQS of
57 µg/L and was not detected in Outfalls 002, 004, 005, 006, 007, 008, and 009; monthly
monitoring kept for all outfalls per current permitting strategy for Petroleum Bulk -Storage facilities
• Ethylbenzene effluent data for Outfalls 003 and 010 showed no reasonable potential to exceed
WQS of 68 µg/L and was not detected in Outfalls 002, 004, 005, 006, 007, 008, and 009; monthly
monitoring kept for all outfalls per current permitting strategy for Petroleum Bulk -Storage facilities
• Xylenes Mixture effluent data for Outfalls 003 and 010 showed no reasonable potential to exceed
WQS of 6200 µg/L and was not detected in Outfalls 002, 004, 005, 006, 007, 008, and 009;
monthly monitoring kept for all outfalls per current permitting strategy for Petroleum Bulk -Storage
facilities
• MTBE effluent data for Outfalls 010 showed no reasonable potential to exceed WQS of 19 µg/L
and was not detected in all other outfalls; monthly monitoring kept for Outfall 010 and monitoring
reduced to quarterly for all other outfalls per current permitting strategy for Petroleum Bulk -Storage
facilities
• Phenolic Compounds effluent data for all Outfalls showed no reasonable potential to exceed
WQS of 300 µg/L; monthly monitoring kept for all outfalls to remain consistent with the current
permitting strategy for Petroleum Bulk -Storage facilities
• Turbidity effluent data for Outfalls 005, 006, 007, 008 and 009 showed a reasonable potential to
exceed WQS of 50 NTU; for Outfalls 002, 003, 004 and 010, the parameter was detected but no
reasonable potential exists; therefore the limit is kept in the permit with Monthly monitoring, to
remain consistent with the current permitting strategy for Petroleum Bulk -Storage facilities
Fact Sheet for Permit Renewal
July 2022 - NPDES Permit NC0031038 - Page 3

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
• Benzyl Alcohol was detected for Outfall 002 on the EPA Method 625 test on 4/21/2020. With only
one parameter hit, there is a limited data set and no reasonable potential to exceed WQS exists;
however, monitoring for EPA Method 625 is kept on a semi-annual basis to remain consistent with
the current permitting strategy for Petroleum Bulk -Storage facilities
Fact Sheet for Permit Renewal
July 2022 - NPDES Permit NC0031038 - Page 4

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JR.
Director
Colonial Pipeline Company
Attn: Jeff Titus, Operations Manager
PO Box 87
Paw Creek, NC 28130
Dear Permittee:
NORTH CAROLINA
Environmental Quality
March 23, 2022
Subject: Request for Additional Information
NPDES Renewal Application
NC0031038
Charlotte Delivery Facility
Mecklenburg County
The Division has reviewed your application for renewal of NPDES permit NC0031038. To enable us to complete
our review in accordance with N.C.G.S. 143-215.1 and 15A NCAC 02H .0105, we need additional or revised
information to address the following comments:
1. As a part of the renewal process, the Division would like to review the lab report results for EPA Method
625 when monitoring was performed for each outfall. Please provide these results as soon as possible. A
table has been provided below of the Discharge Monitoring Reports (DMRs) that had indicated
monitoring for this parameter had been performed.
Outfall
002
Outfall
003
Outfall
004
Outfall
005
Outfall
006
Outfall
007
Outfall
008
Outfall
009
Outfall
010
09/06/2017
09/06/2017
09/06/2017
09/06/2017
09/06/2017
09/06/2017
09/06/2017
09/06/2017
09/19/2017
03/12/2018
03/12/2018
03/12/2018
03/12/2018
03/12/2018
03/12/2018
03/12/2018
03/12/2018
03/12/2018
10/04/2018
10/04/2018
10/04/2018
10/04/2018
10/04/2018
10/04/2018
10/04/2018
10/04/2018
10/04/2018
03/26/2019
03/26/2019
03/26/2019
03/26/2019
01/18/2019
03/26/2019
03/26/2019
03/26/2019
03/26/2019
10/15/2019
10/15/2019
10/16/2019
10/15/2019
03/26/2019
10/15/2019
10/15/2019
10/15/2019
09/24/2019
04/21/2020
04/21/2020
04/14/2020
04/21/2020
10/15/2019
04/27/2020
04/14/2020
04/14/2020
04/14/2020
09/25/2020
09/16/2020
09/25/2020
09/25/2020
04/21/2020
09/25/2020
09/16/2020
09/16/2020
09/16/2020
03/15/2021
03/15/2021
03/15/2021
03/15/2021
09/25/2020
03/15/2021
03/15/2021
03/15/2021
03/15/2021
-r
03/15/2021
We cannot continue processing the permit renewal for Charlotte Delivery Facility until we have received the
additional information requested above.
If you have any questions, please contact me via e-mail at [e-mail].
rIE
NORTH CAROLINA
Department of Environmental Dually
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11617 Mail Service Center I Raleigh, North Carolina 27699-1617
919.707.9000

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
Add. Info. Request
NPDES NC0031038
March 23, 2022
Page 2 of 2
Sincerely,
Sydney Carpenter
Environmental Specialist I
NPDES Compliance and Expedited Permitting
cc: NPDES Permit Files [Laserfiche]
Mooresvile Regional Office [Laserfiche]
Maribeth Hughes, PE, CSP — Colonial Pipeline Company

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
Waypoint.
ANALYTICAL
Colonial Pipeline Company
John Culbreath
PO Box 87
Charlotte, NC 28130
NC Certification No. 402
NC Drinking Water Cert No. 37735
SC Certification No. 99012
Project: Charlotte NPDES Stormwater
Project No.: NC0031038
Lab Submittal Date: 04/21/2020
Work Order: 0040240
Case Narrative
5/5/20 12:31
This data package contains the analytical results for the project identified above and includes a Case Narrative, Sample
Results and Chain of Custody. Unless otherwise noted, all samples were received in acceptable condition and processed
according to the referenced methods.
Data qualifiers are flagged individually on each sample. A key reference for the data qualifiers appears at the end of this case
narrative.
Please call if you have any questions relating to this analytical report.
Respectfully,
WAYPOINT ANALYTICAL
Terri W. Cole
Project Manager
Data Qualifiers Key Reference:
L
M
BRL
MDL
RPD
Parameter reported with possible low bias. LCS recovery below the QC limit.
Matrix spike outside of the control limits.
Below Reporting Limit
Method Detection Limit
Relative Percent Difference
Results reported to the reporting limit. All other results are reported to the MDL with values between MDL and
reporting limit indicated with a J.
This report should not be reproduced, except in its entirety, without the written consent of Waypoint Analytical.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-8001529-6364 - Fax: [phone]
Page 1 of 21

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
Waypoint.
ANALYTICAL
Sample Receipt Summary
05/05/2020
Work Order: 0040240
Client Sample ID
Lab Sample ID Matrix Date/Time Sampled Date/Time Received
SW-OUTFALL-002 04/21/20 Lab
SW-OUTFALL-003 04/21/20 Lab
SW-OUTFALL-005 04/21 f20 Lab
SW-OUTFALL-006 04/21/20 Lab
0040240-01 Water 04/21/20 10:30 04/21/20 16:05
0040240-02 Water 04/21/20 10:45 04/21/20 16:05
0040240-03 Water 04/21/20 11:10 04/21/20 16:05
0040240-04 Water 04/21/20 11:25 04/21/20 16:05
Samples were received in good condition at 2.0 degrees C unless otherwise noted.
This report should not be reproduced, except in its entirety, without the written consent of Waypoint Analytical.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224.0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone]
Page 2 of 21

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
Waypoint.
ANALYTICAL
Summary of Detections
05/05/2020
Work Order: 0040240
Waypoint ID Client ID
Parameter
Method
Result
0040240-01
0040240-01
0040240-02
0040240-02
0040240-03
0040240-04
0040240-04
0040240-04
SW-OUTFALL-002 04/21/20 Lab
SW-OUTFALL-002 04/21/20 Lab
SW-OUTFALL-003 04/21/20 Lab
SW-OUTFALL-003 04/21/20TLab
SW-OUTFALL-005 04/21/20 Lab
SW-OUTFALL-006 04/21/20 Lab
SW-OUTFALL-006 04/21/20 Lab
SW-OUTFALL-006 04/21/20 Lab
Total Suspended Solids
Turbidity
Total Suspended Solids
Turbidity
Turbidity
Oil & Grease (HEM)
Total Suspended Solids
Turbidity
'SM2540 D
'SM2130 8
*SM2540 D
'SM2130 B
'SM2130 B
*16648
'SM2540 D
'SM2130 B
4.8
10
3.4
4.3
3.4
10
16
5.1
Units
mg/L
NTU
mg/L
NTU
NTU
mglL
mg/L
NTU
This report should not be reproduced, except in its entirety, without the written consent of Waypoint Analytical.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 29224-0543
Phone: [phone] - Toll Free Number: 1-800/529.6364 - Fax: [phone]
Page 3 of 21 f

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
Chain Of Custody #: CRTJW-342,Laboratory Account#:
Consultant Contact:
Site Location:
Project Name:
Facility/Site ID#:
Colonial Pipeline PM
Cost Center/AFE#:
Charlotte NPDES
April 2019 partial (2)
0840
John Culbreath
Pay Key #1533
Lab Billing Control #:
Consulting Firm:
Address:
City, State, Zip.
Phone
Fax:
Field Sample ID: Comment:
S W-OUTFALL-002_04/21120_L
SW -OUT FALL-003_04/21/20_L
SW-OUTFALL-005_04/21 /20_L
S W-OUTFALL-00604/21 /20L
1
Custody
Record
Reilnquis4ed by:
Sample
Special Instructions
John Culbreath
s.Jauie;uoD jo #
10
10
10
J 10
Sample
Type:
Lab
Lab
Lab
Lab
Soil
Depth
CD Colonial Pipeline Company
Sample Collection
Date and Time
D 0
O 0
O 0
O j 0
Da
te:
Time: Matrix:
4/21/2020 10:30 AM Surface Wat
4/21/2020 10:45 AM Surface Wat
4/21/2020 11:10 AM Surface Wat
4/21/2020 11:25 AM Surface Wet
Pres.
Test/
Method
Requ.
Method
n
Requested Analysis Method
,ii•�l�it+ii�l�; �� NAB 03
vilk6s.irPi-rtl_i .k. rii= cj
Special Detection Limits:
Date:
ff 2/ 242o
Time:
/3 3o
S
Rece
r:,eq
Laboratory:
Rate:
Ttme:
: tti
b_cS
out/lot'

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
Permit Enforcement History by Permit
Case
Permit:
Region:
NC0031038
Mooresville
Facility: Charlotte Delivery Facility
County: Mecklenburg
Owner: Colonial Pipeline Company
Penalty Remission Enforcement EMC Collection Has
Assessment Penalty Enforcement Request Conference Hearing Memo Sent Payment Case
Approved Amount Costs Damages Received Held Held To AGO Total Paid Balance Due Plan Closed
LV-2016-0081 04/05/16
$200.00 $100.33
$300.33
$0.00 No 05/09/16
LV-2020-0099 03/03/20
$650.00 $110.28
$760.28
$0.00 No 04/06/20
LV-2020-0242 09/10/20
$800.00 $110.28
$910.28 $0.00 No 10/21/20
Total Cases: 3 $1,650.00 $320.89
Total Penalties: $1,970.89
Total Penalties after
$1,970.89 $0.00
$1,970.89

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
PERMIT REPORT REPORT OUTFACE LOCATION
MONTH YEAR NUMBER
PARAMETER
VIOLATION FREQUENCY UNIT OF LIMIT CALCULATED %OVER
DATE MEASURE VALUE
VIOLATION TYPE
NC0031038
3
2018
005
Effluent
Turbidity
03/12/2018
Monthly
ntu
50
55.0
10
Daily Maximum Exceeded
NC0031038
11
2019
007
Effluent
Turbidity
11/21/2019
Monthly
ntu
50
70.0
40
Daily Maximum Exceeded
NC0031038
11
2019
009
Effluent
Turbidity
11/21/2019
Monthly
ntu
50
60.0
20
Daily Maximum Exceeded
NC0031038
12
2019
008
Effluent
Turbidity
12/18/2019
Monthly
ntu
50
70.0
40
Daily Maximum Exceeded
NC0031038
12
2019
007
Effluent
Solids, Total Suspended - Concentration
12/23/2019
Monthly
mg/1
45
440.0
878
Daily Maximum Exceeded
NC0031038
12
2019
007
Effluent
Turbidity
12/23/2019
Monthly
ntu
50
500.0
900
Daily Maximum Exceeded
NC0031038
12
2019
009
Effluent
Turbidity
12/23/2019
Monthly
ntu
50
85.0
70
Daily Maximum Exceeded
NC0031038
12
2019
009
Effluent
Solids, Total Suspended - Concentration
12/31/2019
Monthly
mg/I
30
34.0
13
Monthly Average Exceeded
NC0031038
12
2019
007
Effluent
Solids, Total Suspended - Concentration
12/31/2019
Monthly
mg/1
30
440.0
1367
Monthly Average Exceeded
NC0031038
2
2020
007
Effluent
Turbidity
02/19/2020
Monthly
ntu
50
65.0
30
Daily Maximum Exceeded
NC0031038
2
2020
009
Effluent
Solids, Total Suspended - Concentration
02/19/2020
Monthly
mg/1
45
110.0
144
Daily Maximum Exceeded
NC0031038
2
2020
009
Effluent
Turbidity
02/19/2020
Monthly
ntu
50
170.0
240
Daily Maximum Exceeded
NC0031038
2
2020
007
Effluent
Solids, Total Suspended - Concentration
02/29/2020
Monthly
mg/1
30
43.0
43
Monthly Average Exceeded
NC0031038
2
2020
009
Effluent
Solids, Total Suspended - Concentration
02/29/2020
Monthly
mg/I
30
55.0
83
Monthly Average Exceeded
NC0031038
6
2021
07/31/2021
Late/Missing DMR
NC0031038
12
2021
010
Effluent
Turbidity
12/21/2021
Monthly
ntu
50
72.7
45
Daily Maximum Exceeded

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
wnoie trrluent 1()XIClty 1 esting ana selr Monitoring summary
Colonial Pipeline -Charlotte NC0031038/010 County: Mecklenburg Region: MRO Basin: CTB34
Fthd24Ac Begin: 3/1/2008 24hr LC50 ac monit ft NonComp: 7Q10: PF: IWC:
Freq: A
SOC JOC:
J F M A M
2018 >100
2018 - - >100
2018 - - >100
2018 - - >100
2018 - - >100 - -
2018 - - >100 - -
2018 - - >100 - -
2018 - - >100 - -
2018 - >100 -
2019 - - - >100
2019 - - - >100
2019 - - - >100
2019 - - - - >100
2019 - - - - >100
2019 - - - - >100
2019 - - - - >100
2019 - - - >100
2019 - - - >100
2020 - - - >100
2020 - - - >100
2020 - - - - >100
2020 - - - >100
2020 - - - >100
2020 - - - >100
2020 - - - - >100
2020 - - - - >100
2020 - - - >100
2021 - - >100 -
2021 - >100
2021 - >100
2021 - >100
2021 - >100
2021 - - >100 - -
2021 - - >100 - -
2021 - - >100 - -
2021 - - >100 - -
J
J A S 0 N 0
Colonial Pipeline -Selma NC0031011/001 County: Johnston Region: RRO
Fthd24Ac Begin: 11/1/2013 24hr LC50 ac monit e NonComp: 7Q10: 0.0
Basin: NEU02 SOC JOC:
PF: VAR IWC: 100.0 Freq: A
J F
2018
2019 - >100
2020 - >100
2021 - >100
M A M J J A S 0 N 0
>loo - - -
>100
Legend: P. Fathead minnow (Pimohales oromelas). H=No Flow (facility is active). s = Split test between Certified Labs
Page 25 of 109

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
2016 Generic RPA (non -hardness dependent) - 95% Probability/95% Confidence
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 1. Project Information
❑ CHECK IF HQW OR ORW
Facility Name
WWTP/WTP Class
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
Stream Class
7Q10s (cfs)
7Q10w (cfs)
30Q2 (cfs)
QA (cfs)
1Q10s (cfs)
Data Source(s)
❑ CHECK TO APPLY MODEL
Charlotte Delivery Facility
PC-1
NC0031038
002
0.13410
UT to Gum Branch
WS-Iv
0.00
0.00
0.00
0.00
0.0 6
Follow directions for data entry. In some cases a
comment menu list the available choices or a
dropdown menu will provide a list you may select
from. Error message occur if data entry does not
meet input criteria.
Table 2. Parameters of Concern
Par01
Par02
Par03
Par04
Par05
Par06
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Par15
Par16
Par17
Par18
Par19
Par20
Par21
Par22
Name
Type Chronic
Modifier Acute
PQL Units
Benzene
C
1.19
WS
pg/L
Benzene
C
51
HH
pg/L
Toluene
NC
11
FW
pg/L
Toluene
NC
57
WS
pg/L
Toluene
NC
520
HH
pg/L
Ethylbenzene
NC
68
WS
pg/L
Ethylbenzene
NC
130
HH
pg/L
Ethylbenzene
NC
97
FW
pg/L
Xylenes Mixture
NC
6200
WS
pg/L
Xylenes Mixture
NC
670
FW
pg/L
Xylenes Mixture
NC
57000
HH
pg/L
Napthalene
NC
400
WS
pg/L
Napthalene
NC
12
FW
pg/L
Napthalene
NC
950
HH
pg/L
MTBE (Methyl Tertiary -butyl Ether)
C
19
WS
pg/L
MTBE (Methyl Tertiary -butyl Ether)
C
34000
FW
pg/L
MTBE (Methyl Tertiary -butyl Ether)
C
1500
HH
pg/L
Phenolic Compounds
NC
300
FW
iIg/L
Phenol
NC
4000
WS
pg/L
Phenol
NC
300000
HH
pg/L
Turbidity
NC
50
FW
NTU
Benzyl Alcohol
NC
3500
WS
pg/L
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall002_2021, input
7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
Charlotte Delivery Facility REASONABLE POTENTIAL ANALYSIS
Outfall 002
NC0031038
2016 Generic RPA (non -hardness dependent) - 95% Probability/95% Confidence Qw = 0.1341 MGD
Qw (MGD) = 0.13410
1Q10S (cfs) = 0.00
7Q10S (cfs) = 0.00
7Q1OW (cfs) = 0.00
30Q2 (cfs) = 0.00
Avg. Stream Flow, QA (cfs) = 0.00
Receiving Stream: UT to Gum Branch
MAXIMUM DATA POINTS = 58
WWTP/WTP Class: PC-1
IWC @ 1Q10S = ##########
IWC @ 7Q10S = ##########
IWC @ 7Q1OW = ##########
IWC @ 30Q2 = ##########
IWC @ QA = ##########
Stream Class: WS-IV
PARAMETER
TYPE
(1)
STANDARDS & CRITERIA (2)
J
a
en
z
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC WQS / Applied '/2 FAV /
Chronic Standard Acute
ri # Det. Max Pred Cw Allowable Cw
Benzene
C
1.19 WS
µg/L
51 0
NO DETECTS
Acute: NO WQS
_ _ _ _____ _____
Chronic: 1.19
Max MDL = 5
_ _ _____
No detects
Toluene
NC
57 WS
µg/L
51 0
NO DETECTS
Acute: NO WQS
_ _ _ _____ _ ___
Chronic: 57.00
Max MDL = 5
_ _ ___________
No detects
Ethylbenzene
NC
68 WS
µg/L
51 0
NO DETECTS
Acute: NO WQS
_ _ _ _____ _ ___
Chronic: 68.00
Max MDL =5
_ _ _______________________
No detects
Xylenes Mixture
NC
6200 WS
µg/L
51 0
NO DETECTS_
Acute: NO WQS
_ _ ___ _ _ ___
Chronic: 6,200.00
Max MDL = 10
_ _ _______________________
No detects
MTBE (Methyl Tertiary -butyl Ether)
C
19 WS
µg/L
51 0
NO DETECTS_
Acute: NO WQS
_ _ _____ _ ___
Chronic: 19.00
Max MDL = 10
_ _ _______________________
No detects
Phenolic Compounds
NC
300 FW
µg/L
51 3
58.1
Acute: NO WQS
_ _ _ _____ _ ___
Chronic: 300.00
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _____
No RP, Predicted Max < 50% of Allowbale Cw -
Monitoring still required per current strategy
Turbidity
NC
50 FW
NTU
51 38
37.5
Acute: NO WQS
_ _ _ _____ _ ___
Chronic: 50.00
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _ _
No RP, Predicted Max >_ 50% of Allowable Cw - apply
Monthly Monitoring per current strategy
Benzyl Alcohol
NC
3500 WS
µg/L
1 1
Note: n < 9
Limited data set
27.0
Default C.V.
Acute: NO WQS
_ _ ___ _ _ ___
Chronic: 3,500.00
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _____
No RP,Predicted Max < 50% of Allowbale Cw -
Limited Data Set - Monitoring kept
Page 1 of 1
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall002_2021, rpa
7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Benzene
Date Data BDL=1/2DL Results
1 5/16/2017 < 0.5 0.25 Std Dev. 0.3213
2 6/19/2017 < 0.5 0.25 Mean 0.3235
3 7/10/2017 < 0.5 0.25 C.V. 0.9931
4 8/9/2017 < 0.5 0.25 n 51
5 9/6/2017 < 0.5 0.25
6 10/17/2017 < 0.5 0.25 Mult Factor = 1.0600
7 11/16/2017 < 0.5 0.25 Max. Value 2.5 pg/L
8 12/7/2017 < 0.5 0.25 Max. Pred Cw 0 DETECTS pg/L
9 1/22/2018 < 0.5 0.25
10 2/26/2018 < 0.5 0.25
11 3/12/2018 < 0.5 0.25
12 4/13/2018 < 0.5 0.25
13 5/3/2018 < 0.5 0.25
14 8/6/2018 < 0.5 0.25
15 9/11/2018 < 0.5 0.25
16 10/4/2018 < 0.5 0.25
17 11 /21 /2018 < 0.5 0.25
18 12/7/2018 < 0.5 0.25
19 1/18/2019 < 0.5 0.25
20 2/14/2019 < 0.5 0.25
21 3/26/2019 < 0.5 0.25
22 4/8/2019 < 0.5 0.25
23 5/7/2019 < 0.5 0.25
24 6/13/2019 < 0.5 0.25
25 7/22/2019 < 0.5 0.25
26 8/7/2019 < 0.5 0.25
27 10/15/2019 < 0.5 0.25
28 11 /21 /2019 < 0.5 0.25
29 12/18/2019 < 0.5 0.25
30 1/8/2020 < 0.5 0.25
31 2/19/2020 < 0.5 0.25
32 3/18/2020 < 0.5 0.25
33 4/21/2020 < 0.5 0.25
34 5/26/2020 < 0.5 0.25
35 6/12/2020 < 0.5 0.25
36 7/7/2020 < 0.5 0.25
37 8/12/2020 < 0.5 0.25
38 9/25/2020 < 0.5 0.25
39 10/15/2020 < 0.5 0.25
40 11/10/2020 < 0.5 0.25
41 12/2/2020 < 0.5 0.25
42 1/25/2021 < 0.5 0.25
43 2/4/2021 < 0.5 0.25
44 3/15/2021 < 5 2.5
45 4/6/2021 < 0.5 0.25
46 5/26/2021 < 1 0.5
47 6/25/2021 < 1 0.5
48 7/8/2021 < 1 0.5
49 8/17/2021 < 1 0.5
50 9/2/2021 < 1 0.5
51 10/11/2021 < 1 0.5
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
-1-
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11002_2021, data
7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Toluene
Date Data BDL=1/2DL Results
1 5/16/2017 < 1 0.5 Std Dev. 0.2857
2 6/19/2017 < 1 0.5 Mean 0.5294
3 7/10/2017 < 1 0.5 C.V. 0.5396
4 8/9/2017 < 1 0.5 n 51
5 9/6/2017 < 1 0.5
6 10/17/2017 < 1 0.5 Mult Factor = 1.0300
7 11/16/2017 < 1 0.5 Max. Value 2.5 pg/L
8 12/7/2017 < 1 0.5 Max. Pred Cw 0 DETECTS pg/L
9 1/22/2018 < 1 0.5
10 2/26/2018 < 1 0.5
11 3/12/2018 < 1 0.5
12 4/13/2018 < 1 0.5
13 5/3/2018 < 1 0.5
14 8/6/2018 < 1 0.5
15 9/11/2018 < 1 0.5
16 10/4/2018 < 1 0.5
17 11/21/2018 < 1 0.5
18 12/7/2018 < 1 0.5
19 1/18/2019 < 1 0.5
20 2/14/2019 < 1 0.5
21 3/26/2019 < 1 0.5
22 4/8/2019 < 1 0.5
23 5/7/2019 < 1 0.5
24 6/13/2019 < 1 0.5
25 7/22/2019 < 1 0.5
26 8/7/2019 < 1 0.5
27 10/15/2019 < 1 0.5
28 11/21/2019 < 1 0.5
29 12/18/2019 < 1 0.5
30 1/8/2020 < 1 0.5
31 2/19/2020 < 1 0.5
32 3/18/2020 < 1 0.5
33 4/21/2020 < 1 0.5
34 5/26/2020 < 1 0.5
35 6/12/2020 < 1 0.5
36 7/7/2020 < 1 0.5
37 8/12/2020 < 1 0.5
38 9/25/2020 < 1 0.5
39 10/15/2020 < 1 0.5
40 11/10/2020 < 1 0.5
41 12/2/2020 < 1 0.5
42 1/25/2021 < 1 0.5
43 2/4/2021 < 0.5 0.25
44 3/15/2021 < 5 2.5
45 4/6/2021 < 0.5 0.25
46 5/26/2021 < 1 0.5
47 6/25/2021 < 1 0.5
48 7/8/2021 < 1 0.5
49 8/17/2021 < 1 0.5
50 9/2/2021 < 1 0.5
51 10/11/2021 < 1 0.5
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
Ethylbenzene Values" then "i
. Maximum c
points = 5
Date Data BDL=1/2DL Results _
1 5/16/2017 < 1 0.5 Std Dev. 0.2857
2 6/19/2017 < 1 0.5 Mean 0.5294
3 7/10/2017 < 1 0.5 C.V. 0.5396
4 8/9/2017 < 1 0.5 n 51
5 9/6/2017 < 1 0.5
6 10/17/2017 < 1 0.5 Mult Factor = 1.0300
7 11/16/2017 < 1 0.5 Max. Value 2.5
8 12/7/2017 < 1 0.5 Max. Pred Cw 0 DETECTS
9 1/22/2018 < 1 0.5
10 2/26/2018 < 1 0.5
11 3/12/2018 < 1 0.5
12 4/13/2018 < 1 0.5
13 5/3/2018 < 1 0.5
14 8/6/2018 < 1 0.5
15 9/11/2018 < 1 0.5
16 10/4/2018 < 1 0.5
17 11/21/2018 < 1 0.5
18 12/7/2018 < 1 0.5
19 1/18/2019 < 1 0.5
20 2/14/2019 < 1 0.5
21 3/26/2019 < 1 0.5
22 4/8/2019 < 1 0.5
23 5/7/2019 < 1 0.5
24 6/13/2019 < 1 0.5
25 7/22/2019 < 1 0.5
26 8/7/2019 < 1 0.5
27 10/15/2019 < 1 0.5
28 11/21/2019 < 1 0.5
29 12/18/2019 < 1 0.5
30 1/8/2020 < 1 0.5
31 2/19/2020 < 1 0.5
32 3/18/2020 < 1 0.5
33 4/21/2020 < 1 0.5
34 5/26/2020 < 1 0.5
35 6/12/2020 < 1 0.5
36 7/7/2020 < 1 0.5
37 8/12/2020 < 1 0.5
38 9/25/2020 < 1 0.5
39 10/15/2020 < 1 0.5
40 11/10/2020 < 1 0.5
41 12/2/2020 < 1 0.5
42 1/25/2021 < 1 0.5
43 2/4/2021 < 0.5 0.25
44 3/15/2021 < 5 2.5
45 4/6/2021 < 0.5 0.25
46 5/26/2021 < 1 0.5
47 6/25/2021 < 1 0.5
48 7/8/2021 < 1 0.5
49 8/17/2021 < 1 0.5
50 9/2/2021 < 1 0.5
51 10/11/2021 < 1 0.5
52
53
54
55
56
57
58
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11002_2021, data
- 2 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
COPY"
iata
18
Xylenes Mixture
pg/L
pg/L
Date Data BDL=1/2DL Results
1 5/16/2017 < 3 1.5 Std Dev. 0.6074
2 6/19/2017 < 3 1.5 Mean 1.4412
3 7/10/2017 < 3 1.5 C.V. 0.4215
4 8/9/2017 < 3 1.5 n 51
5 9/6/2017 < 3 1.5
6 10/17/2017 < 3 1.5 Mult Factor = 1.03
7 11/16/2017 < 3 1.5 Max. Value 5.0 pg/L
8 12/7/2017 < 3 1.5 Max. Pred Cw 0 DETECTS pg/L
9 1/22/2018 < 3 1.5
10 2/26/2018 < 3 1.5
11 3/12/2018 < 3 1.5
12 4/13/2018 < 3 1.5
13 5/3/2018 < 3 1.5
14 8/6/2018 < 3 1.5
15 9/11/2018 < 3 1.5
16 10/4/2018 < 3 1.5
17 11/21/2018 < 3 1.5
18 12/7/2018 < 3 1.5
19 1/18/2019 < 3 1.5
20 2/14/2019 < 3 1.5
21 3/26/2019 < 3 1.5
22 4/8/2019 < 3 1.5
23 5/7/2019 < 3 1.5
24 6/13/2019 < 3 1.5
25 7/22/2019 < 3 1.5
26 8/7/2019 < 3 1.5
27 10/15/2019 < 3 1.5
28 11/21/2019 < 3 1.5
29 12/18/2019 < 3 1.5
30 1/8/2020 < 2 1
31 2/19/2020 < 3 1.5
32 3/18/2020 < 3 1.5
33 4/21/2020 < 3 1.5
34 5/26/2020 < 3 1.5
35 6/12/2020 < 3 1.5
36 7/7/2020 < 3 1.5
37 8/12/2020 < 3 1.5
38 9/25/2020 < 3 1.5
39 10/15/2020 < 3 1.5
40 11/10/2020 < 3 1.5
41 12/2/2020 < 3 1.5
42 1/25/2021 < 3 1.5
43 2/4/2021 < 1.5 0.75
44 3/15/2021 < 10 5
45 4/6/2021 < 0.5 0.25
46 5/26/2021 < 1 0.5
47 6/25/2021 < 1 0.5
48 7/8/2021 < 1 0.5
49 8/17/2021 < 1 0.5
50 9/2/2021 < 3 1.5
51 10/11/2021 < 3 1.5
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
MTBE (Methyl Tertiary -butyl Ether)
Date Data BDL=1/2DL Results
1 5/16/2017 < 5 2.5 Std Dev.
2 6/19/2017 < 5 2.5 Mean
3 7/10/2017 < 5 2.5 C.V.
4 8/9/2017 < 5 2.5 n
5 9/6/2017 < 5 2.5
6 10/17/2017 < 5 2.5 Mult Factor =
7 11/16/2017 < 5 2.5 Max. Value
8 12/7/2017 < 5 2.5 Max. Pred Cw
9 1/22/2018 < 5 2.5
10 2/26/2018 < 5 2.5
11 3/12/2018 < 5 2.5
12 4/13/2018 < 5 2.5
13 5/3/2018 < 5 2.5
14 8/6/2018 < 5 2.5
15 9/11/2018 < 5 2.5
16 10/4/2018 < 5 2.5
17 11/21/2018 < 5 2.5
18 12/7/2018 < 5 2.5
19 1/18/2019 < 5 2.5
20 2/14/2019 < 5 2.5
21 3/26/2019 < 5 2.5
22 4/8/2019 < 5 2.5
23 5/7/2019 < 5 2.5
24 6/13/2019 < 5 2.5
25 7/22/2019 < 5 2.5
26 8/7/2019 < 5 2.5
27 10/15/2019 < 5 2.5
28 11/21/2019 < 5 2.5
29 12/18/2019 < 5 2.5
30 1/8/2020 < 5 2.5
31 2/19/2020 < 5 2.5
32 3/18/2020 < 5 2.5
33 4/21/2020 < 5 2.5
34 5/26/2020 < 5 2.5
35 6/12/2020 < 5 2.5
36 7/7/2020 < 5 2.5
37 8/12/2020 < 5 2.5
38 9/25/2020 < 5 2.5
39 10/15/2020 < 5 2.5
40 11/10/2020 < 5 2.5
41 12/2/2020 < 5 2.5
42 1/25/2021 < 5 2.5
43 2/4/2021 < 1 0.5
44 3/15/2021 < 10 5
45 4/6/2021 < 1 0.5
46 5/26/2021 < 1 0.5
47 6/25/2021 < 1 0.5
48 7/8/2021 < 1 0.5
49 8/17/2021 < 1 0.5
50 9/2/2021 < 5 2.5
51 10/11/2021 < 5 2.5
52
53
54
55
56
57
58
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall002_2021, data
- 3 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Values" then "COPY"
. Maximum data
points = 58
Phenolic Compounds
0.7547
2.3137
0.3262
51
1.0200
5.0 pg/L
0 DETECTS pg/L
Date Data
5/ 16/2017
6/19/2017
7/10/2017
8/9/2017
9/6/2017
10/17/2017
11/16/2017
12/7/2017
1/22/2018
2/26/2018
3/12/2018
4/13/2018
5/3/2018
8/6/2018
9/11/2018
10/4/2018
11/21/2018
12/7/2018
1/18/2019
2/14/2019
3/26/2019
4/8/2019
5/7/2019
6/13/2019
7/22/2019
8/7/2019
10/15/2019
11/21/2019
12/18/2019
1/8/2020
2/19/2020
3/18/2020
4/21/2020
5/26/2020
6/12/2020
7/7/2020
8/12/2020
9/25/2020
10/15/2020
11/10/2020
12/2/2020
1/25/2021
2/4/2021
3/15/2021
4/6/2021
5/26/2021
6/25/2021
7/8/2021
8/17/2021
9/2/2021
10/11/2021
BDL=1/2DL
25
25
25
25
25
25
25
25
25
25
25
25
25
48
57
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
53
25
25
25
25
25
25
25
25
10
10
10
10
10
10
Results
Std Dev.
Mean
C.V.
n
Mult Factor =
Max. Value
Max. Pred Cw
Values" then "COPY"
. Maximum data
points = 58
8.5861
24.8627
0.3453
51
1.0200
57.0 pg/L
58.1 pg/L
Turbidity
Date
Data
5/16/2017 <
6/19/2017
7/10/2017 <
8/9/2017 <
9/6/2017 <
10/17/2017
11/16/2017
12/7/2017
1/22/2018
2/26/2018
3/12/2018
4/13/2018
5/3/2018 <
8/6/2018
9/11/2018
10/4/2018
11/21/2018
12/7/2018
1/18/2019
2/14/2019
3/26/2019
4/8/2019
5/7/2019
6/13/2019
7/22/2019 <
8/7/2019
10/15/2019 <
11/21/2019
12/18/2019
1/8/2020
2/19/2020
3/18/2020
4/21/2020
5/26/2020
6/12/2020
7/7/2020
8/12/2020 <
9/25/2020
10/15/2020
11/10/2020 <
12/2/2020
1/25/2021
2/4/2021
3/15/2021
4/6/2021 <
5/26/2021
6/25/2021 <
7/8/2021
8/17/2021 <
9/2/2021
10/11/2021 <
1
2.9
1
1
1
1.3
2.4
2.9
3.4
6.4
12
1.2
1
1.1
1.4
1
5.2
3.4
7.3
19
6.2
5.5
1.6
5
1
1.1
1
2.9
35
9.3
12
3.6
10
3.6
1.1
2
1
6.3
2.1
1
6.5
3.9
11
1
1
1.5
1
1.9
1
2.1
1
BDL=1/2DL
0.5
2.9
0.5
0.5
0.5
1.3
2.4
2.9
3.4
6.4
12
1.2
0.5
1.1
1.4
1
5.2
3.4
7.3
19
6.2
5.5
1.6
5
0.5
1.1
0.5
2.9
35
9.3
12
3.6
10
3.6
1.1
2
0.5
6.3
2.1
0.5
6.5
3.9
11
1
0.5
1.5
0.5
1.9
0.5
2.1
0.5
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11002_2021, data
- 4 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Results
Std Dev. 5.8696
Mean 4.1686
C.V. 1.4080
n 51
Values" then "COPY"
. Maximum data
points = 58
Mult Factor = 1.0700
Max. Value 35.0 NTU
Max. Pred Cw 37.5 NTU
Benzyl Alcohol
Date Data BDL=1/2DL Results
1 4/21/2020 27 27 Std Dev. N/A
2 Mean 27.0000
3 C.V. 0.0000
4 n 1
5
6 Mult Factor = 1.0000
7 Max. Value 27.0 pg/L
8 Max. Pred Cw 27.0 pg/L
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11002_2021, data
- 5 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
2016 Generic RPA (non -hardness dependent) - 95% Probability/95% Confidence
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 1. Project Information
❑ CHECK IF HQW OR ORW
Facility Name
WWTP/WTP Class
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
Stream Class
7Q10s (cfs)
7Q10w (cfs)
30Q2 (cfs)
QA (cfs)
1Q10s (cfs)
Data Source(s)
❑ CHECK TO APPLY MODEL
Charlotte Delivery Facility
PC-1
NC0031038
003
0.10020
UT to Gum Branch
WS-Iv
0.00
0.00
0.00
0.00
0.0 6
Follow directions for data entry. In some cases a
comment menu list the available choices or a
dropdown menu will provide a list you may select
from. Error message occur if data entry does not
meet input criteria.
Table 2. Parameters of Concern
Par01
Par02
Par03
Par04
Par05
Par06
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Par15
Par16
Par17
Par18
Par19
Par20
Par21
Par22
Name
Type Chronic
Modifier Acute
PQL Units
Benzene
C
1.19
WS
pg/L
Benzene
C
51
HH
pg/L
Toluene
NC
11
FW
pg/L
Toluene
NC
57
WS
pg/L
Toluene
NC
520
HH
pg/L
Ethylbenzene
NC
68
WS
pg/L
Ethylbenzene
NC
130
HH
pg/L
Ethylbenzene
NC
97
FW
pg/L
Xylenes Mixture
NC
6200
WS
pg/L
Xylenes Mixture
NC
670
FW
pg/L
Xylenes Mixture
NC
57000
HH
pg/L
Napthalene
NC
400
WS
pg/L
Napthalene
NC
12
FW
pg/L
Napthalene
NC
950
HH
pg/L
MTBE (Methyl Tertiary -butyl Ether)
C
19
WS
pg/L
MTBE (Methyl Tertiary -butyl Ether)
C
34000
FW
pg/L
MTBE (Methyl Tertiary -butyl Ether)
C
1500
HH
pg/L
Phenolic Compounds
NC
300
FW
iIg/L
Phenol
NC
4000
WS
pg/L
Phenol
NC
300000
HH
pg/L
Turbidity
NC
50
FW
NTU
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall003_2021, input
7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
charlotte Delivery Facility REASONABLE POTENTIAL ANALYSIS
Outfall 003
NC0031038
2016 Generic RPA (non -hardness dependent) - 95% Probability/95% Confidence Qw = 0.1002 MGD
Qw (MGD) = 0.10020
1Q1OS (cfs) = 0.00
7Q10S (cfs) = 0.00
7Q1OW (cfs) = 0.00
30Q2 (cfs) = 0.00
Avg. Stream Flow, QA (cfs) = 0.00
Receiving Stream: UT to Gum Branch
MAXIMUM DATA POINTS = 58
WWTP/WTP Class: PC-1
IWC @ 1Q1OS = ##########
IWC @ 7Q10S = ##########
IWC @ 7Q1OW = ##########
IWC @ 30Q2 = ##########
IWC @ QA = ##########
Stream Class: WS-IV
PARAMETER
TYPE
(1)
STANDARDS & CRITERIA (2)
J
a
en
z
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC WQS / Applied '/2 FAV /
Chronic Standard Acute
ri # Det. Max Pred Cw Allowable Cw
Benzene
C
1.19 WS
µg/L
49 3
2.1
Acute: NO WQS
-- _ _ ----_ _
Chronic: 1.19--------------------------------
1 value(s) > Allowable Cw
RP shown - apply Monthly Monitoring with Limit
Toluene
NC
57 WS
µg/L
49 4
15.7
Acute: NO WQS
_ _ _ _____ _ ___
Chronic: 57.00
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _____
No RP, Predicted Max < 50% of Allowbale Cw -
Monitoring still required per current strategy
Ethylbenzene
NC
68 WS
µg/L
49 1
1.0
Acute: NO WQS
_ ___________________________
Chronic: 68.00
No value > Allowable Cw
No RP, Predicted Max < 50% of Allowbale Cw -
Monitoring still required per current strategy
Xylenes Mixture
NC
6200 WS
µg/L
49 4
19.7
Acute: NO WQS
__ _ _ ___ _ _ ___
Chronic: 6,200.00
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _____
No RP, Predicted Max < 50% of Allowbale Cw -
Monitoring still required per current strategy
MTBE (Methyl Tertiary -butyl Ether)
C
19 WS
µg/L
49 0
NO DETECTS
Acute: NO WQS
__ _ _ _____ _ ___
Chronic: 19.00
Max MDL = 5
_ _ _______________________
No detects
Phenolic Compounds
NC
300 FW
µg/L
49 5
61.8
Acute: NO WQS
_ _ _ _____ _ ___
Chronic: 300.00
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _____
No RP, Predicted Max < 50% of Allowbale Cw -
Monitoring still required per current strategy
Turbidity
NC
50 FW
NTU
49 42
17.1
Acute: NO WQS
_ _ _ _____ _ ___
Chronic: 50.00
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _____
No RP, Predicted Max < 50% of Allowbale Cw -
Monitoring still required per current strategy
0 0
N/A
Acute:
-- _ _----------------------------------------
Chronic:
Page 2 of 2
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall003_2021, rpa
7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Benzene
Date Data BDL=1/2DL Results
1 5/16/2017 < 0.5 0.25 Std Dev. 0.2877
2 6/19/2017 < 0.5 0.25 Mean 0.3298
3 7/10/2017 < 0.5 0.25 C.V. 0.8725
4 8/9/2017 < 0.5 0.25 n 49
5 9/6/2017 < 0.5 0.25
6 10/17/2017 < 0.5 0.25 Mult Factor = 1.0700
7 11/16/2017 < 0.5 0.25 Max. Value 2.0 pg/L
8 12/7/2017 < 0.5 0.25 Max. Pred Cw 2.1 pg/L
9 1/22/2018 < 0.5 0.25
10 2/26/2018 < 0.5 0.25
11 3/12/2018 < 0.5 0.25
12 4/13/2018 < 0.5 0.25
13 5/3/2018 < 0.5 0.25
14 8/6/2018 < 0.5 0.25
15 9/11/2018 < 0.5 0.25
16 10/4/2018 < 0.5 0.25
17 11 /21 /2018 < 0.5 0.25
18 12/7/2018 < 0.5 0.25
19 1/18/2019 < 0.5 0.25
20 2/14/2019 < 0.5 0.25
21 3/26/2019 < 0.5 0.25
22 4/15/2019 < 0.5 0.25
23 5/7/2019 < 0.5 0.25
24 6/13/2019 0.81 0.81
25 7/22/2019 < 0.5 0.25
26 8/7/2019 < 0.5 0.25
27 10/15/2019 < 0.5 0.25
28 11 /21 /2019 < 0.5 0.25
29 12/18/2019 < 0.5 0.25
30 1/8/2020 < 0.5 0.25
31 2/18/2020 < 0.5 0.25
32 3/18/2020 < 0.5 0.25
33 4/21/2020 < 0.5 0.25
34 5/28/2020 < 0.5 0.25
35 6/12/2020 < 0.5 0.25
36 7/7/2020 < 0.5 0.25
37 8/12/2020 < 0.5 0.25
38 9/16/2020 < 0.5 0.25
39 10/15/2020 < 0.5 0.25
40 11/10/2020 < 0.5 0.25
41 12/2/2020 < 0.5 0.25
42 1/25/2021 < 0.5 0.25
43 2/4/2021 < 0.5 0.25
44 3/15/2021 2 2
45 4/6/2021 < 0.5 0.25
46 5/26/2021 < 1 0.5
47 6/25/2021 < 1 0.5
48 7/8/2021 1.1 1.1
49 8/17/2021 < 1 0.5
50
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
-1-
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11003_2021, data
7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Toluene
Values" then "COPY"
. Maximum data
points = 58
Ethylbenzene
Date Data BDL=1/2DL Results Date Data BDL=1/2DL Results
1 5/16/2017 < 1 0.5 Std Dev. 1.9597 1 5/16/2017 < 1 0.5 Std Dev. 0.0884
2 6/19/2017 < 1 0.5 Mean 0.8439 2 6/19/2017 < 1 0.5 Mean 0.5000
3 7/10/2017 < 1 0.5 C.V. 2.3222 3 7/10/2017 < 1 0.5 C.V. 0.1768
4 8/9/2017 < 1 0.5 n 49 4 8/9/2017 < 1 0.5 n 49
5 9/6/2017 < 1 0.5 5 9/6/2017 < 1 0.5
6 10/17/2017 < 1 0.5 Mult Factor = 1.1200 6 10/17/2017 < 1 0.5 Mult Factor = 1.0100
7 11/16/2017 < 1 0.5 Max. Value 14.0 pg/L 7 11/16/2017 < 1 0.5 Max. Value 1.0
8 12/7/2017 < 1 0.5 Max. Pred Cw 15.7 pg/L 8 12/7/2017 < 1 0.5 Max. Pred Cw 1.0
9 1/22/2018 < 1 0.5 9 1/22/2018 < 1 0.5
10 2/26/2018 < 1 0.5 10 2/26/2018 < 1 0.5
11 3/12/2018 < 1 0.5 11 3/12/2018 < 1 0.5
12 4/13/2018 < 1 0.5 12 4/13/2018 < 1 0.5
13 5/3/2018 < 1 0.5 13 5/3/2018 < 1 0.5
14 8/6/2018 < 1 0.5 14 8/6/2018 < 1 0.5
15 9/11/2018 < 1 0.5 15 9/11/2018 < 1 0.5
16 10/4/2018 < 1 0.5 16 10/4/2018 < 1 0.5
17 11/21/2018 < 1 0.5 17 11/21/2018 < 1 0.5
18 12/7/2018 < 1 0.5 18 12/7/2018 < 1 0.5
19 1/18/2019 < 1 0.5 19 1/18/2019 < 1 0.5
20 2/14/2019 < 1 0.5 20 2/14/2019 < 1 0.5
21 3/26/2019 < 1 0.5 21 3/26/2019 < 1 0.5
22 4/15/2019 < 1 0.5 22 4/15/2019 < 1 0.5
23 5/7/2019 < 1 0.5 23 5/7/2019 < 1 0.5
24 6/13/2019 < 1 0.5 24 6/13/2019 < 1 0.5
25 7/22/2019 < 1 0.5 25 7/22/2019 < 1 0.5
26 8/7/2019 < 1 0.5 26 8/7/2019 < 1 0.5
27 10/15/2019 < 1 0.5 27 10/15/2019 < 1 0.5
28 11/21/2019 < 1 0.5 28 11/21/2019 < 1 0.5
29 12/18/2019 1.2 1.2 29 12/18/2019 < 1 0.5
30 1/8/2020 3.2 3.2 30 1/8/2020 < 1 0.5
31 2/18/2020 < 1 0.5 31 2/18/2020 < 1 0.5
32 3/18/2020 < 1 0.5 32 3/18/2020 < 1 0.5
33 4/21/2020 < 1 0.5 33 4/21/2020 < 1 0.5
34 5/28/2020 < 1 0.5 34 5/28/2020 < 1 0.5
35 6/12/2020 < 1 0.5 35 6/12/2020 < 1 0.5
36 7/7/2020 < 1 0.5 36 7/7/2020 < 1 0.5
37 8/12/2020 < 1 0.5 37 8/12/2020 < 1 0.5
38 9/16/2020 < 1 0.5 38 9/16/2020 < 1 0.5
39 10/15/2020 < 1 0.5 39 10/15/2020 < 1 0.5
40 11/10/2020 < 1 0.5 40 11/10/2020 < 1 0.5
41 12/2/2020 < 1 0.5 41 12/2/2020 < 1 0.5
42 1/25/2021 < 1 0.5 42 1/25/2021 < 1 0.5
43 2/4/2021 < 0.5 0.25 43 2/4/2021 < 0.5 0.25
44 3/15/2021 14 14 44 3/15/2021 1 1
45 4/6/2021 0.7 0.7 45 4/6/2021 < 0.5 0.25
46 5/26/2021 < 1 0.5 46 5/26/2021 < 1 0.5
47 6/25/2021 < 1 0.5 47 6/25/2021 < 1 0.5
48 7/8/2021 < 1 0.5 48 7/8/2021 < 1 0.5
49 8/17/2021 < 1 0.5 49 8/17/2021 < 1 0.5
50 50
51 51
52 52
53 53
54 54
55 55
56 56
57 57
58 58
Values" then "I
. Maximum c
points = 5
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11003_2021, data
- 2 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
COPY"
iata
18
Xylenes Mixture
pg/L
pg/L
Date Data BDL=1/2DL Results
1 5/16/2017 < 3 1.5 Std Dev. 3.0809
2 6/19/2017 < 3 1.5 Mean 2.1079
3 7/10/2017 < 3 1.5 C.V. 1.4616
4 8/9/2017 < 3 1.5 n 49
5 9/6/2017 < 3 1.5
6 10/17/2017 < 3 1.5 Mult Factor = 1.09
7 11/16/2017 < 3 1.5 Max. Value 18.1 pg/L
8 12/7/2017 < 3 1.5 Max. Pred Cw 19.7 pg/L
9 1/22/2018 < 3 1.5
10 2/26/2018 < 3 1.5
11 3/12/2018 < 3 1.5
12 4/13/2018 < 3 1.5
13 5/3/2018 < 3 1.5
14 8/6/2018 < 3 1.5
15 9/11/2018 < 3 1.5
16 10/4/2018 < 3 1.5
17 11/21/2018 < 3 1.5
18 12/7/2018 < 3 1.5
19 1/18/2019 < 3 1.5
20 2/14/2019 < 3 1.5
21 3/26/2019 < 3 1.5
22 4/15/2019 < 3 1.5
23 5/7/2019 < 3 1.5
24 6/13/2019 < 3 1.5
25 7/22/2019 < 3 1.5
26 8/7/2019 < 3 1.5
27 10/15/2019 < 3 1.5
28 11/21/2019 < 3 1.5
29 12/18/2019 < 3 1.5
30 1/8/2020 18.1 18.1
31 2/18/2020 < 3 1.5
32 3/18/2020 < 3 1.5
33 4/21/2020 < 3 1.5
34 5/28/2020 < 3 1.5
35 6/12/2020 < 3 1.5
36 7/7/2020 < 3 1.5
37 8/12/2020 < 3 1.5
38 9/16/2020 < 3 1.5
39 10/15/2020 < 3 1.5
40 11/10/2020 < 3 1.5
41 12/2/2020 < 3 1.5
42 1/25/2021 < 3 1.5
43 2/4/2021 0.688 0.688
44 3/15/2021 15 15
45 4/6/2021 5 5
46 5/26/2021 < 1 0.5
47 6/25/2021 < 1 0.5
48 7/8/2021 < 1 0.5
49 8/17/2021 < 3 1.5
50
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
MTBE (Methyl Tertiary -butyl Ether)
Date Data BDL=1/2DL Results
1 5/16/2017 < 5 2.5 Std Dev.
2 6/19/2017 < 5 2.5 Mean
3 7/10/2017 < 5 2.5 C.V.
4 8/9/2017 < 5 2.5 n
5 9/6/2017 < 5 2.5
6 10/17/2017 < 5 2.5 Mult Factor =
7 11/16/2017 < 5 2.5 Max. Value
8 12/7/2017 < 5 2.5 Max. Pred Cw
9 1/22/2018 < 5 2.5
10 2/26/2018 < 5 2.5
11 3/12/2018 < 5 2.5
12 4/13/2018 < 5 2.5
13 5/3/2018 < 5 2.5
14 8/6/2018 < 5 2.5
15 9/11/2018 < 5 2.5
16 10/4/2018 < 5 2.5
17 11/21/2018 < 5 2.5
18 12/7/2018 < 5 2.5
19 1/18/2019 < 5 2.5
20 2/14/2019 < 5 2.5
21 3/26/2019 < 5 2.5
22 4/15/2019 < 5 2.5
23 5/7/2019 < 5 2.5
24 6/13/2019 < 5 2.5
25 7/22/2019 < 5 2.5
26 8/7/2019 < 5 2.5
27 10/15/2019 < 5 2.5
28 11/21/2019 < 5 2.5
29 12/18/2019 < 5 2.5
30 1/8/2020 < 5 2.5
31 2/18/2020 < 5 2.5
32 3/18/2020 < 5 2.5
33 4/21/2020 < 5 2.5
34 5/28/2020 < 5 2.5
35 6/12/2020 < 5 2.5
36 7/7/2020 < 5 2.5
37 8/12/2020 < 5 2.5
38 9/16/2020 < 5 2.5
39 10/15/2020 < 5 2.5
40 11/10/2020 < 5 2.5
41 12/2/2020 < 5 2.5
42 1/25/2021 < 5 2.5
43 2/4/2021 < 1 0.5
44 3/15/2021 < 1 0.5
45 4/6/2021 < 1 0.5
46 5/26/2021 < 1 0.5
47 6/25/2021 < 1 0.5
48 7/8/2021 < 1 0.5
49 8/17/2021 < 5 2.5
50
51
52
53
54
55
56
57
58
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall003_2021, data
- 3 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Values" then "COPY"
. Maximum data
points = 58
0.6624
2.2551
0.2937
49
1.0200
2.5 pg/L
0 DETECTS pg/L
Phenolic Compounds
Date Data BDL=1/2DL Results
1 5/16/2017 < 50 25 Std Dev. 10.4343
2 6/19/2017 < 50 25 Mean 26.5714
3 7/10/2017 < 50 25 C.V. 0.3927
4 8/9/2017 < 50 25 n 49
5 9/6/2017 < 50 25
6 10/17/2017 < 50 25 Mult Factor = 1.0300
7 11/16/2017 < 50 25 Max. Value 60.0 pg/L
8 12/7/2017 < 50 25 Max. Pred Cw 61.8 pg/L
9 1/22/2018 < 50 25
10 2/26/2018 < 50 25
11 3/12/2018 < 50 25
12 4/13/2018 < 50 25
13 5/3/2018 < 50 25
14 8/6/2018 29 29
15 9/11/2018 < 50 25
16 10/4/2018 < 50 25
17 11/21/2018 < 50 25
18 12/7/2018 < 50 25
19 1/18/2019 < 50 25
20 2/14/2019 < 50 25
21 3/26/2019 < 50 25
22 4/15/2019 < 50 25
23 5/7/2019 < 50 25
24 6/13/2019 < 50 25
25 7/22/2019 < 50 25
26 8/7/2019 < 50 25
27 10/15/2019 < 50 25
28 11/21/2019 59 59
29 12/18/2019 < 50 25
30 1/8/2020 < 50 25
31 2/18/2020 < 50 25
32 3/18/2020 < 50 25
33 4/21/2020 < 50 25
34 5/28/2020 < 50 25
35 6/12/2020 < 50 25
36 7/7/2020 58 58
37 8/12/2020 < 50 25
38 9/16/2020 56 56
39 10/15/2020 60 60
40 11/10/2020 < 50 25
41 12/2/2020 < 50 25
42 1/25/2021 < 50 25
43 2/4/2021 < 50 25
44 3/15/2021 < 50 25
45 4/6/2021 < 50 25
46 5/26/2021 < 20 10
47 6/25/2021 < 20 10
48 7/8/2021 < 20 10
49 8/17/2021 < 20 10
50
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
Turbidity
Date
Data BDL=1/2DL
0.5
4.1
1.2
0.5
1
1.5
2.4
2.2
2.1
4
13
0.5
0.5
2.1
0.5
1.1
5.7
2.7
5
14
5.3
9.7
2.1
3.8
0.5
1.5
1.9
3.1
12
4.2
8.1
5.9
3.4
8.4
1.4
2
1.3
0.5
2.2
1.9
4.6
3.9
16
7.7
3.1
4.2
2
5
3.8
5/16/2017 < 1
6/19/2017 4.1
7/10/2017 1.2
8/9/2017 < 1
9/6/2017 1
10/17/2017 1.5
11/16/2017 2.4
12/7/2017 2.2
1/22/2018 2.1
2/26/2018 4
3/12/2018 13
4/13/2018 < 1
5/3/2018 < 1
8/6/2018 2.1
9/11/2018 < 1
10/4/2018 1.1
11/21/2018 5.7
12/7/2018 2.7
1/18/2019 5
2/14/2019 14
3/26/2019 5.3
4/15/2019 9.7
5/7/2019 2.1
6/13/2019 3.8
7/22/2019 < 1
8/7/2019 1.5
10/15/2019 1.9
11/21/2019 3.1
12/18/2019 12
1/8/2020 4.2
2/18/2020 8.1
3/18/2020 5.9
4/21/2020 3.4
5/28/2020 8.4
6/12/2020 1.4
7/7/2020 2
8/12/2020 1.3
9/16/2020 < 1
10/15/2020 2.2
11/10/2020 1.9
12/2/2020 4.6
1/25/2021 3.9
2/4/2021 16
3/15/2021 7.7
4/6/2021 3.1
5/26/2021 4.2
6/25/2021 2
7/8/2021 5
8/17/2021 3.8
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall003_2021, data
- 4 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Results
Std Dev. 3.7079
Mean 3.9612
C.V. 0.9360
n 49
Values" then "COPY"
. Maximum data
points = 58
Mult Factor = 1.0700
Max. Value 16.0 NTU
Max. Pred Cw 17.1 NTU
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11003_2021, data
- 5 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
2016 Generic RPA (non -hardness dependent) - 95% Probability/95% Confidence
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 1. Project Information
❑ CHECK IF HQW OR ORW
Facility Name
WWTP/WTP Class
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
Stream Class
7Q10s (cfs)
7Q10w (cfs)
30Q2 (cfs)
QA (cfs)
1Q10s (cfs)
Data Source(s)
❑ CHECK TO APPLY MODEL
Charlotte Delivery Facility
PC-1
NC0031038
004
0.22060
UT to Gum Branch
WS-Iv
0.00
0.00
0.00
0.00
0.0 6
Follow directions for data entry. In some cases a
comment menu list the available choices or a
dropdown menu will provide a list you may select
from. Error message occur if data entry does not
meet input criteria.
Table 2. Parameters of Concern
Par01
Par02
Par03
Par04
Par05
Par06
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Par15
Par16
Par17
Par18
Par19
Par20
Par21
Par22
Name
Type Chronic
Modifier Acute
PQL Units
Benzene
C
1.19
WS
pg/L
Benzene
C
51
HH
pg/L
Toluene
NC
11
FW
pg/L
Toluene
NC
57
WS
pg/L
Toluene
NC
520
HH
pg/L
Ethylbenzene
NC
68
WS
pg/L
Ethylbenzene
NC
130
HH
pg/L
Ethylbenzene
NC
97
FW
pg/L
Xylenes Mixture
NC
6200
WS
pg/L
Xylenes Mixture
NC
670
FW
pg/L
Xylenes Mixture
NC
57000
HH
pg/L
Napthalene
NC
400
WS
pg/L
Napthalene
NC
12
FW
pg/L
Napthalene
NC
950
HH
pg/L
MTBE (Methyl Tertiary -butyl Ether)
C
19
WS
pg/L
MTBE (Methyl Tertiary -butyl Ether)
C
34000
FW
pg/L
MTBE (Methyl Tertiary -butyl Ether)
C
1500
HH
pg/L
Phenolic Compounds
NC
300
FW
iIg/L
Phenol
NC
4000
WS
pg/L
Phenol
NC
300000
HH
pg/L
Turbidity
NC
50
FW
NTU
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall004_2021, input
7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
Charlotte Delivery Facility REASONABLE POTENTIAL ANALYSIS
Outfall 004
NC0031038
2016 Generic RPA (non -hardness dependent) - 95% Probability/95% Confidence Qw = 0.2206 MGD
Qw (MGD) = 0.22060
1Q10S (cfs) = 0.00
7Q10S (cfs) = 0.00
7Q1OW (cfs) = 0.00
30Q2 (cfs) = 0.00
Avg. Stream Flow, QA (cfs) = 0.00
Receiving Stream: UT to Gum Branch
MAXIMUM DATA POINTS = 58
WWTP/WTP Class: PC-1
IWC @ 1Q10S = ##########
IWC @ 7Q10S = ##########
IWC @ 7Q1OW = ##########
IWC @ 30Q2 = ##########
IWC @ QA = ##########
Stream Class: WS-IV
PARAMETER
TYPE
(1)
STANDARDS & CRITERIA (2)
J
a
en
z
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC WQS / Applied '/2 FAV /
Chronic Standard Acute
ri # Det. Max Pred Cw Allowable Cw
Benzene
C
1.19 WS
µg/L
51 0
NO DETECTS
Acute: NO WQS
_ _ _ _____ _____
Chronic: 1.19
Max MDL = 1
_ _ _____
No detects
Toluene
NC
57 WS
µg/L
51 0
NO DETECTS
Acute: NO WQS
_ _ _ _____ _ ___
Chronic: 57.00
Max MDL = 1
_ _ ___________
No detects
Ethylbenzene
NC
68 WS
µg/L
51 0
NO DETECTS
Acute: NO WQS
_ _ _ _____ _ ___
Chronic: 68.00
Max MDL = 1
_ _ _______________________
No detects
Xylenes Mixture
NC
6200 WS
µg/L
51 0
NO DETECTS_
Acute: NO WQS
_ _ ___ _ _ ___
Chronic: 6,200.00
Max MDL = 3
_ _ _______________________
No detects
MTBE (Methyl Tertiary -butyl Ether)
C
19 WS
µg/L
51 0
NO DETECTS_
Acute: NO WQS
_ _ _____ _ ___
Chronic: 19.00
Max MDL = 5
_ _ _______________________
No detects
Phenolic Compounds
NC
300 FW
µg/L
51 2
65.3
Acute: NO WQS
_ _ _ _____ _ ___
Chronic: 300.00
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _____
No RP, Predicted Max < 50% of Allowbale Cw -
Monitoring required per current permitting strategy
Turbidity
NC
50 FW
NTU
51 46
23.3
Acute: NO WQS
_ _ _ _____ _ ___
Chronic: 50.00
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _____
No RP, Predicted Max < 50% of Allowbale Cw -
Monitoring required per current permitting strategy
0 0
N/A
Acute:
-- _ _----------------------------------------
Chronic:
Page 2 of 2
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall004_2021, rpa
7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Benzene
Date Data BDL=1/2DL Results
1 5/16/2017 < 0.5 0.25 Std Dev. 0.0813
2 6/19/2017 < 0.5 0.25 Mean 0.2794
3 7/10/2017 < 0.5 0.25 C.V. 0.2911
4 8/9/2017 < 0.5 0.25 n 51
5 9/6/2017 < 0.5 0.25
6 10/17/2017 < 0.5 0.25 Mult Factor = 1.0200
7 11/16/2017 < 0.5 0.25 Max. Value 0.5 pg/L
8 12/7/2017 < 0.5 0.25 Max. Pred Cw 0 DETECTS pg/L
9 1/22/2018 < 0.5 0.25
10 2/26/2018 < 0.5 0.25
11 3/12/2018 < 0.5 0.25
12 4/13/2018 < 0.5 0.25
13 5/3/2018 < 0.5 0.25
14 8/6/2018 < 0.5 0.25
15 9/11/2018 < 0.5 0.25
16 10/4/2018 < 0.5 0.25
17 11 /21 /2018 < 0.5 0.25
18 12/7/2018 < 0.5 0.25
19 1/18/2019 < 0.5 0.25
20 2/14/2019 < 0.5 0.25
21 3/26/2019 < 0.5 0.25
22 4/8/2019 < 0.5 0.25
23 5/7/2019 < 0.5 0.25
24 6/13/2019 < 0.5 0.25
25 7/22/2019 < 0.5 0.25
26 8/7/2019 < 0.5 0.25
27 10/16/2019 < 0.5 0.25
28 11 /21 /2019 < 0.5 0.25
29 12/18/2019 < 0.5 0.25
30 1/8/2020 < 0.5 0.25
31 2/18/2020 < 0.5 0.25
32 3/18/2020 < 0.5 0.25
33 4/14/2020 < 0.5 0.25
34 5/26/2020 < 0.5 0.25
35 6/12/2020 < 0.5 0.25
36 7/7/2020 < 0.5 0.25
37 8/12/2020 < 0.5 0.25
38 9/25/2020 < 0.5 0.25
39 10/15/2020 < 0.5 0.25
40 11/10/2020 < 0.5 0.25
41 12/2/2020 < 0.5 0.25
42 1/25/2021 < 0.5 0.25
43 2/4/2021 < 0.5 0.25
44 3/15/2021 < 0.5 0.25
45 4/6/2021 < 0.5 0.25
46 5/26/2021 < 1 0.5
47 6/25/2021 < 1 0.5
48 7/8/2021 < 1 0.5
49 8/17/2021 < 1 0.5
50 9/2/2021 < 1 0.5
51 10/11/2021 < 1 0.5
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
-1-
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11004_2021, data
7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Toluene
Date Data BDL=1/2DL Results
1 5/16/2017 < 1 0.5 Std Dev. 0.0594
2 6/19/2017 < 1 0.5 Mean 0.4853
3 7/10/2017 < 1 0.5 C.V. 0.1224
4 8/9/2017 < 1 0.5 n 51
5 9/6/2017 < 1 0.5
6 10/17/2017 < 1 0.5 Mult Factor = 1.0100
7 11/16/2017 < 1 0.5 Max. Value 0.5 pg/L
8 12/7/2017 < 1 0.5 Max. Pred Cw 0 DETECTS pg/L
9 1/22/2018 < 1 0.5
10 2/26/2018 < 1 0.5
11 3/12/2018 < 1 0.5
12 4/13/2018 < 1 0.5
13 5/3/2018 < 1 0.5
14 8/6/2018 < 1 0.5
15 9/11/2018 < 1 0.5
16 10/4/2018 < 1 0.5
17 11/21/2018 < 1 0.5
18 12/7/2018 < 1 0.5
19 1/18/2019 < 1 0.5
20 2/14/2019 < 1 0.5
21 3/26/2019 < 1 0.5
22 4/8/2019 < 1 0.5
23 5/7/2019 < 1 0.5
24 6/13/2019 < 1 0.5
25 7/22/2019 < 1 0.5
26 8/7/2019 < 1 0.5
27 10/16/2019 < 1 0.5
28 11/21/2019 < 1 0.5
29 12/18/2019 < 1 0.5
30 1/8/2020 < 1 0.5
31 2/18/2020 < 1 0.5
32 3/18/2020 < 1 0.5
33 4/14/2020 < 1 0.5
34 5/26/2020 < 1 0.5
35 6/12/2020 < 1 0.5
36 7/7/2020 < 1 0.5
37 8/12/2020 < 1 0.5
38 9/25/2020 < 1 0.5
39 10/15/2020 < 1 0.5
40 11/10/2020 < 1 0.5
41 12/2/2020 < 1 0.5
42 1/25/2021 < 1 0.5
43 2/4/2021 < 0.5 0.25
44 3/15/2021 < 0.5 0.25
45 4/6/2021 < 0.5 0.25
46 5/26/2021 < 1 0.5
47 6/25/2021 < 1 0.5
48 7/8/2021 < 1 0.5
49 8/17/2021 < 1 0.5
50 9/2/2021 < 1 0.5
51 10/11/2021 < 1 0.5
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
Ethylbenzene Values" then "i
. Maximum c
points = 5
Date Data BDL=1/2DL Results
1 5/16/2017 < 1 0.5 Std Dev. 0.0594
2 6/19/2017 < 1 0.5 Mean 0.4853
3 7/10/2017 < 1 0.5 C.V. 0.1224
4 8/9/2017 < 1 0.5 n 51
5 9/6/2017 < 1 0.5
6 10/17/2017 < 1 0.5 Mult Factor = 1.0100
7 11/16/2017 < 1 0.5 Max. Value 0.5
8 12/7/2017 < 1 0.5 Max. Pred Cw 0 DETECTS
9 1/22/2018 < 1 0.5
10 2/26/2018 < 1 0.5
11 3/12/2018 < 1 0.5
12 4/13/2018 < 1 0.5
13 5/3/2018 < 1 0.5
14 8/6/2018 < 1 0.5
15 9/11/2018 < 1 0.5
16 10/4/2018 < 1 0.5
17 11/21/2018 < 1 0.5
18 12/7/2018 < 1 0.5
19 1/18/2019 < 1 0.5
20 2/14/2019 < 1 0.5
21 3/26/2019 < 1 0.5
22 4/8/2019 < 1 0.5
23 5/7/2019 < 1 0.5
24 6/13/2019 < 1 0.5
25 7/22/2019 < 1 0.5
26 8/7/2019 < 1 0.5
27 10/16/2019 < 1 0.5
28 11/21/2019 < 1 0.5
29 12/18/2019 < 1 0.5
30 1/8/2020 < 1 0.5
31 2/18/2020 < 1 0.5
32 3/18/2020 < 1 0.5
33 4/14/2020 < 1 0.5
34 5/26/2020 < 1 0.5
35 6/12/2020 < 1 0.5
36 7/7/2020 < 1 0.5
37 8/12/2020 < 1 0.5
38 9/25/2020 < 1 0.5
39 10/15/2020 < 1 0.5
40 11/10/2020 < 1 0.5
41 12/2/2020 < 1 0.5
42 1/25/2021 < 1 0.5
43 2/4/2021 < 0.5 0.25
44 3/15/2021 < 0.5 0.25
45 4/6/2021 < 0.5 0.25
46 5/26/2021 < 1 0.5
47 6/25/2021 < 1 0.5
48 7/8/2021 < 1 0.5
49 8/17/2021 < 1 0.5
50 9/2/2021 < 1 0.5
51 10/11/2021 < 1 0.5
52
53
54
55
56
57
58
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11004_2021, data
- 2 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
COPY"
iata
18
Xylenes Mixture
pg/L
pg/L
Date Data BDL=1/2DL Results
1 5/16/2017 < 3 1.5 Std Dev. 0.3477
2 6/19/2017 < 3 1.5 Mean 1.3676
3 7/10/2017 < 3 1.5 C.V. 0.2542
4 8/9/2017 < 3 1.5 n 51
5 9/6/2017 < 3 1.5
6 10/17/2017 < 3 1.5 Mult Factor = 1.02
7 11/16/2017 < 3 1.5 Max. Value 1.5 pg/L
8 12/7/2017 < 3 1.5 Max. Pred Cw 0 DETECTS pg/L
9 1/22/2018 < 3 1.5
10 2/26/2018 < 3 1.5
11 3/12/2018 < 3 1.5
12 4/13/2018 < 3 1.5
13 5/3/2018 < 3 1.5
14 8/6/2018 < 3 1.5
15 9/11/2018 < 3 1.5
16 10/4/2018 < 3 1.5
17 11/21/2018 < 3 1.5
18 12/7/2018 < 3 1.5
19 1/18/2019 < 3 1.5
20 2/14/2019 < 3 1.5
21 3/26/2019 < 3 1.5
22 4/8/2019 < 3 1.5
23 5/7/2019 < 3 1.5
24 6/13/2019 < 3 1.5
25 7/22/2019 < 3 1.5
26 8/7/2019 < 3 1.5
27 10/16/2019 < 3 1.5
28 11/21/2019 < 3 1.5
29 12/18/2019 < 3 1.5
30 1/8/2020 < 2 1
31 2/18/2020 < 3 1.5
32 3/18/2020 < 3 1.5
33 4/14/2020 < 3 1.5
34 5/26/2020 < 3 1.5
35 6/12/2020 < 3 1.5
36 7/7/2020 < 3 1.5
37 8/12/2020 < 3 1.5
38 9/25/2020 < 3 1.5
39 10/15/2020 < 3 1.5
40 11/10/2020 < 3 1.5
41 12/2/2020 < 3 1.5
42 1/25/2021 < 3 1.5
43 2/4/2021 < 1.5 0.75
44 3/15/2021 < 0.5 0.25
45 4/6/2021 < 0.5 0.25
46 5/26/2021 < 1 0.5
47 6/25/2021 < 1 0.5
48 7/8/2021 < 1 0.5
49 8/17/2021 < 3 1.5
50 9/2/2021 < 3 1.5
51 10/11/2021 < 3 1.5
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
MTBE (Methyl Tertiary -butyl Ether)
Date Data BDL=1/2DL Results
1 5/16/2017 < 5 2.5 Std Dev.
2 6/19/2017 < 5 2.5 Mean
3 7/10/2017 < 5 2.5 C.V.
4 8/9/2017 < 5 2.5 n
5 9/6/2017 < 5 2.5
6 10/17/2017 < 5 2.5 Mult Factor =
7 11/16/2017 < 5 2.5 Max. Value
8 12/7/2017 < 5 2.5 Max. Pred Cw
9 1/22/2018 < 5 2.5
10 2/26/2018 < 5 2.5
11 3/12/2018 < 5 2.5
12 4/13/2018 < 5 2.5
13 5/3/2018 < 5 2.5
14 8/6/2018 < 5 2.5
15 9/11/2018 < 5 2.5
16 10/4/2018 < 5 2.5
17 11/21/2018 < 5 2.5
18 12/7/2018 < 5 2.5
19 1/18/2019 < 5 2.5
20 2/14/2019 < 5 2.5
21 3/26/2019 < 5 2.5
22 4/8/2019 < 5 2.5
23 5/7/2019 < 5 2.5
24 6/13/2019 < 5 2.5
25 7/22/2019 < 5 2.5
26 8/7/2019 < 5 2.5
27 10/16/2019 < 5 2.5
28 11/21/2019 < 5 2.5
29 12/18/2019 < 5 2.5
30 1/8/2020 < 5 2.5
31 2/18/2020 < 5 2.5
32 3/18/2020 < 5 2.5
33 4/14/2020 < 5 2.5
34 5/26/2020 < 5 2.5
35 6/12/2020 < 5 2.5
36 7/7/2020 < 5 2.5
37 8/12/2020 < 5 2.5
38 9/25/2020 < 5 2.5
39 10/15/2020 < 5 2.5
40 11/10/2020 < 5 2.5
41 12/2/2020 < 5 2.5
42 1/25/2021 < 5 2.5
43 2/4/2021 < 1 0.5
44 3/15/2021 < 1 0.5
45 4/6/2021 < 1 0.5
46 5/26/2021 < 1 0.5
47 6/25/2021 < 1 0.5
48 7/8/2021 < 1 0.5
49 8/17/2021 < 5 2.5
50 9/2/2021 < 5 2.5
51 10/11/2021 < 5 2.5
52
53
54
55
56
57
58
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall004_2021, data
- 3 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Values" then "COPY"
. Maximum data
points = 58
0.6508
2.2647
0.2874
51
1.0200
2.5 pg/L
0 DETECTS pg/L
Phenolic Compounds
Date
Data BDL=1/2DL Results
25 Std Dev. 8.5377
25 Mean 24.5490
25 C.V. 0.3478
25 n 51
25
25 Melt Factor = 1.0200
25 Max. Value 64.0 pg/L
25 Max. Pred Cw 65.3 pg/L
25
25
25
25
25
64
25
25
25
25
25
25
25
25
25
25
25
25
25
25
53
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
10
10
10
10
10
10
5/16/2017 < 50
6/19/2017 < 50
7/10/2017 < 50
8/9/2017 < 50
9/6/2017 < 50
10/17/2017 < 50
11/16/2017 < 50
12/7/2017 < 50
1/22/2018 < 50
2/26/2018 < 50
3/12/2018 < 50
4/13/2018 < 50
5/3/2018 < 50
8/6/2018 64
9/11/2018 < 50
10/4/2018 < 50
11/21/2018 < 50
12/7/2018 < 50
1/18/2019 < 50
2/14/2019 < 50
3/26/2019 < 50
4/8/2019 < 50
5/7/2019 < 50
6/13/2019 < 50
7/22/2019 < 50
8/7/2019 < 50
10/16/2019 < 50
11/21/2019 < 50
12/18/2019 53
1/8/2020 < 50
2/18/2020 < 50
3/18/2020 < 50
4/14/2020 < 50
5/26/2020 < 50
6/12/2020 < 50
7/7/2020 < 50
8/12/2020 < 50
9/25/2020 < 50
10/15/2020 < 50
11/10/2020 < 50
12/2/2020 < 50
1/25/2021 < 50
2/4/2021 < 50
3/15/2021 < 50
4/6/2021 < 50
5/26/2021 < 20
6/25/2021 < 20
7/8/2021 < 20
8/17/2021 < 20
9/2/2021 < 20
10/11/2021 < 20
Values" then "COPY"
. Maximum data
points = 58
Turbidity
Date
Data BDL=1/2DL
0.5
6.8
1
0.5
7.2
3.2
2
2.8
4.4
4.4
13
0.5
1.4
1.5
1.3
1.2
8.1
5.5
4.7
5
3.1
4.1
0.5
0.5
1
1.9
2.3
1.3
7
22
5.8
3.3
3.1
1.8
1.1
1
1
6.3
3.4
2.2
5.2
2.8
9
1.4
2.4
6.9
1.1
1.8
1.1
2.9
1.1
5/16/2017 < 1
6/19/2017 6.8
7/10/2017 1
8/9/2017 < 1
9/6/2017 7.2
10/17/2017 3.2
11/16/2017 2
12/7/2017 2.8
1/22/2018 4.4
2/26/2018 4.4
3/12/2018 13
4/13/2018 < 1
5/3/2018 1.4
8/6/2018 1.5
9/11/2018 1.3
10/4/2018 1.2
11/21/2018 8.1
12/7/2018 5.5
1/18/2019 4.7
2/14/2019 5
3/26/2019 3.1
4/8/2019 4.1
5/7/2019 < 1
6/13/2019 < 1
7/22/2019 1
8/7/2019 1.9
10/16/2019 2.3
11/21/2019 1.3
12/18/2019 7
1/8/2020 22
2/18/2020 5.8
3/18/2020 3.3
4/14/2020 3.1
5/26/2020 1.8
6/12/2020 1.1
7/7/2020 1
8/12/2020 1
9/25/2020 6.3
10/15/2020 3.4
11/10/2020 2.2
12/2/2020 5.2
1/25/2021 2.8
2/4/2021 9
3/15/2021 1.4
4/6/2021 2.4
5/26/2021 6.9
6/25/2021 1.1
7/8/2021 1.8
8/17/2021 1.1
9/2/2021 2.9
10/11/2021 1.1
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall004_2021, data
- 4 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Results
Std Dev. 3.7285
Mean 3.5961
C.V. 1.0368
n 51
Values" then "COPY"
. Maximum data
points = 58
Mult Factor = 1.0600
Max. Value 22.0 NTU
Max. Pred Cw 23.3 NTU
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11004_2021, data
- 5 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
2016 Generic RPA (non -hardness dependent) - 95% Probability/95% Confidence
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 1. Project Information
❑ CHECK IF HQW OR ORW
Facility Name
WWTP/WTP Class
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
Stream Class
7Q10s (cfs)
7Q10w (cfs)
30Q2 (cfs)
QA (cfs)
1Q10s (cfs)
Data Source(s)
❑ CHECK TO APPLY MODEL
Charlotte Delivery Facility
PC-1
NC0031038
005
0.09700
UT to Gum Branch
WS-Iv
0.00
0.00
0.00
0.00
0.0 6
Follow directions for data entry. In some cases a
comment menu list the available choices or a
dropdown menu will provide a list you may select
from. Error message occur if data entry does not
meet input criteria.
Table 2. Parameters of Concern
Par01
Par02
Par03
Par04
Par05
Par06
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Par15
Par16
Par17
Par18
Par19
Par20
Par21
Par22
Name
Type Chronic
Modifier Acute
PQL Units
Benzene
C
1.19
WS
pg/L
Benzene
C
51
HH
pg/L
Toluene
NC
11
FW
pg/L
Toluene
NC
57
WS
pg/L
Toluene
NC
520
HH
pg/L
Ethylbenzene
NC
68
WS
pg/L
Ethylbenzene
NC
130
HH
pg/L
Ethylbenzene
NC
97
FW
pg/L
Xylenes Mixture
NC
6200
WS
pg/L
Xylenes Mixture
NC
670
FW
pg/L
Xylenes Mixture
NC
57000
HH
pg/L
Napthalene
NC
400
WS
pg/L
Napthalene
NC
12
FW
pg/L
Napthalene
NC
950
HH
pg/L
MTBE (Methyl Tertiary -butyl Ether)
C
19
WS
pg/L
MTBE (Methyl Tertiary -butyl Ether)
C
34000
FW
pg/L
MTBE (Methyl Tertiary -butyl Ether)
C
1500
HH
pg/L
Phenolic Compounds
NC
300
FW
iIg/L
Phenol
NC
4000
WS
pg/L
Phenol
NC
300000
HH
pg/L
Turbidity
NC
50
FW
NTU
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall005_2021, input
7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
Charlotte Delivery Facility REASONABLE POTENTIAL ANALYSIS
Outfall 005
NC0031038
2016 Generic RPA (non -hardness dependent) - 95% Probability/95% Confidence Qw = 0.097 MGD
Qw (MGD) = 0.09700
1Q10S (cfs) = 0.00
7Q10S (cfs) = 0.00
7Q1OW (cfs) = 0.00
30Q2 (cfs) = 0.00
Avg. Stream Flow, QA (cfs) = 0.00
Receiving Stream: UT to Gum Branch
MAXIMUM DATA POINTS = 58
WWTP/WTP Class: PC-1
IWC @ 1Q10S = ##########
IWC @ 7Q10S = ##########
IWC @ 7Q1OW = ##########
IWC @ 30Q2 = ##########
IWC @ QA = ##########
Stream Class: WS-IV
PARAMETER
TYPE
(1)
STANDARDS & CRITERIA (2)
J
a
en
E
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC WQS / Applied 'Y2 FAV /
Chronic Standard Acute
ri # Det. Max Pred Cw Allowable Cw
Benzene
C
1.19 WS
µg/L
50 0
NO DETECTS
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _ _ _
Chronic: 1.19
Max MDL = 1
_ _ _ _ _ _ _ _
No detects
Toluene
NC
57 WS
µg/L
50 0
NO DETECTS
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _ _
Chronic: 57.00
Max MDL = 1
_ _ _ _ _ _ _ _ _ _ _ _ _ _
No detects
Ethylbenzene
NC
68 WS
µg/L
50 0
NO DETECTS
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _ _
Chronic: 68.00
Max MDL = 1
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
No detects
Xylenes Mixture
NC
6200 WS
µg/L
50 0
NO DETECTS_
Acute: NO WQS
_ _ _ _ _ _ _ _ _
Chronic: 6,200.00
Max MDL = 3
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
No detects
MTBE (Methyl Tertiary -butyl Ether)
C
19 WS
µg/L
50 0
NO DETECTS_
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _
Chronic: 19.00
Max MDL = 5
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
No detects
Phenolic Compounds
NC
300 FW
µg/L
50 4
83.2
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _ _
Chronic: 300.00
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
No RP, Predicted Max < 50% of Allowbale Cw -
Monitoring required per current permitting strategy
Turbidity
NC
50 FW
NTU
50 34
60.0
Acute: NO WQS
_ _ _ _____
Chronic: 50.00
1 value(s) > Allowable Cw
P shown - apply Monthly Monitoring with Limit
Page 2 of 2
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall005_2021, rpa
7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Benzene
Date Data BDL=1/2DL Results
1 5/16/2017 < 0.5 0.25 Std Dev. 0.0758
2 6/19/2017 < 0.5 0.25 Mean 0.2750
3 7/10/2017 < 0.5 0.25 C.V. 0.2755
4 8/9/2017 < 0.5 0.25 n 50
5 9/6/2017 < 0.5 0.25
6 10/23/2017 < 0.5 0.25 Mult Factor = 1.0200
7 11/16/2017 < 0.5 0.25 Max. Value 0.5 pg/L
8 12/7/2017 < 0.5 0.25 Max. Pred Cw 0 DETECTS pg/L
9 1/22/2018 < 0.5 0.25
10 2/26/2018 < 0.5 0.25
11 3/12/2018 < 0.5 0.25
12 4/13/2018 < 0.5 0.25
13 5/3/2018 < 0.5 0.25
14 8/6/2018 < 0.5 0.25
15 9/11/2018 < 0.5 0.25
16 10/4/2018 < 0.5 0.25
17 11 /21 /2018 < 0.5 0.25
18 12/7/2018 < 0.5 0.25
19 1/18/2019 < 0.5 0.25
20 2/14/2019 < 0.5 0.25
21 3/26/2019 < 0.5 0.25
22 4/8/2019 < 0.5 0.25
23 5/7/2019 < 0.5 0.25
24 6/13/2019 < 0.5 0.25
25 7/22/2019 < 0.5 0.25
26 8/7/2019 < 0.5 0.25
27 10/15/2019 < 0.5 0.25
28 11 /21 /2019 < 0.5 0.25
29 12/18/2019 < 0.5 0.25
30 1/8/2020 < 0.5 0.25
31 2/18/2020 < 0.5 0.25
32 3/18/2020 < 0.5 0.25
33 4/21/2020 < 0.5 0.25
34 5/26/2020 < 0.5 0.25
35 6/12/2020 < 0.5 0.25
36 7/7/2020 < 0.5 0.25
37 8/12/2020 < 0.5 0.25
38 9/25/2020 < 0.5 0.25
39 10/15/2020 < 0.5 0.25
40 11/10/2020 < 0.5 0.25
41 12/2/2020 < 0.5 0.25
42 1/25/2021 < 0.5 0.25
43 2/4/2021 < 0.5 0.25
44 3/15/2021 < 0.5 0.25
45 4/6/2021 < 0.5 0.25
46 6/25/2021 < 1 0.5
47 7/8/2021 < 1 0.5
48 8/17/2021 < 1 0.5
49 9/2/2021 < 1 0.5
50 10/11/2021 < 1 0.5
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
-1-
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11005_2021, data
7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Toluene
Date Data BDL=1/2DL Results
1 5/16/2017 < 1 0.5 Std Dev. 0.0600
2 6/19/2017 < 1 0.5 Mean 0.4850
3 7/10/2017 < 1 0.5 C.V. 0.1237
4 8/9/2017 < 1 0.5 n 50
5 9/6/2017 < 1 0.5
6 10/23/2017 < 1 0.5 Mult Factor = 1.0100
7 11/16/2017 < 1 0.5 Max. Value 0.5 pg/L
8 12/7/2017 < 1 0.5 Max. Pred Cw 0 DETECTS pg/L
9 1/22/2018 < 1 0.5
10 2/26/2018 < 1 0.5
11 3/12/2018 < 1 0.5
12 4/13/2018 < 1 0.5
13 5/3/2018 < 1 0.5
14 8/6/2018 < 1 0.5
15 9/11/2018 < 1 0.5
16 10/4/2018 < 1 0.5
17 11/21/2018 < 1 0.5
18 12/7/2018 < 1 0.5
19 1/18/2019 < 1 0.5
20 2/14/2019 < 1 0.5
21 3/26/2019 < 1 0.5
22 4/8/2019 < 1 0.5
23 5/7/2019 < 1 0.5
24 6/13/2019 < 1 0.5
25 7/22/2019 < 1 0.5
26 8/7/2019 < 1 0.5
27 10/15/2019 < 1 0.5
28 11/21/2019 < 1 0.5
29 12/18/2019 < 1 0.5
30 1/8/2020 < 1 0.5
31 2/18/2020 < 1 0.5
32 3/18/2020 < 1 0.5
33 4/21/2020 < 1 0.5
34 5/26/2020 < 1 0.5
35 6/12/2020 < 1 0.5
36 7/7/2020 < 1 0.5
37 8/12/2020 < 1 0.5
38 9/25/2020 < 1 0.5
39 10/15/2020 < 1 0.5
40 11/10/2020 < 1 0.5
41 12/2/2020 < 1 0.5
42 1/25/2021 < 1 0.5
43 2/4/2021 < 0.5 0.25
44 3/15/2021 < 0.5 0.25
45 4/6/2021 < 0.5 0.25
46 6/25/2021 < 1 0.5
47 7/8/2021 < 1 0.5
48 8/17/2021 < 1 0.5
49 9/2/2021 < 1 0.5
50 10/11/2021 < 1 0.5
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
Ethylbenzene Values" then "i
. Maximum c
points = 5
Date Data BDL=1/2DL Results
1 5/16/2017 < 1 0.5 Std Dev. 0.0600
2 6/19/2017 < 1 0.5 Mean 0.4850
3 7/10/2017 < 1 0.5 C.V. 0.1237
4 8/9/2017 < 1 0.5 n 50
5 9/6/2017 < 1 0.5
6 10/23/2017 < 1 0.5 Mult Factor = 1.0100
7 11/16/2017 < 1 0.5 Max. Value 0.5
8 12/7/2017 < 1 0.5 Max. Pred Cw 0 DETECTS
9 1/22/2018 < 1 0.5
10 2/26/2018 < 1 0.5
11 3/12/2018 < 1 0.5
12 4/13/2018 < 1 0.5
13 5/3/2018 < 1 0.5
14 8/6/2018 < 1 0.5
15 9/11/2018 < 1 0.5
16 10/4/2018 < 1 0.5
17 11/21/2018 < 1 0.5
18 12/7/2018 < 1 0.5
19 1/18/2019 < 1 0.5
20 2/14/2019 < 1 0.5
21 3/26/2019 < 1 0.5
22 4/8/2019 < 1 0.5
23 5/7/2019 < 1 0.5
24 6/13/2019 < 1 0.5
25 7/22/2019 < 1 0.5
26 8/7/2019 < 1 0.5
27 10/15/2019 < 1 0.5
28 11/21/2019 < 1 0.5
29 12/18/2019 < 1 0.5
30 1/8/2020 < 1 0.5
31 2/18/2020 < 1 0.5
32 3/18/2020 < 1 0.5
33 4/21/2020 < 1 0.5
34 5/26/2020 < 1 0.5
35 6/12/2020 < 1 0.5
36 7/7/2020 < 1 0.5
37 8/12/2020 < 1 0.5
38 9/25/2020 < 1 0.5
39 10/15/2020 < 1 0.5
40 11/10/2020 < 1 0.5
41 12/2/2020 < 1 0.5
42 1/25/2021 < 1 0.5
43 2/4/2021 < 0.5 0.25
44 3/15/2021 < 0.5 0.25
45 4/6/2021 < 0.5 0.25
46 6/25/2021 < 1 0.5
47 7/8/2021 < 1 0.5
48 8/17/2021 < 1 0.5
49 9/2/2021 < 1 0.5
50 10/11/2021 < 1 0.5
51
52
53
54
55
56
57
58
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11005_2021, data
- 2 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
COPY"
iata
18
Xylenes Mixture
pg/L
pg/L
Date Data BDL=1/2DL Results
1 5/16/2017 < 3 1.5 Std Dev. 0.3281
2 6/19/2017 < 3 1.5 Mean 1.3850
3 7/10/2017 < 3 1.5 C.V. 0.2369
4 8/9/2017 < 3 1.5 n 50
5 9/6/2017 < 3 1.5
6 10/23/2017 < 3 1.5 Mult Factor = 1.02
7 11/16/2017 < 3 1.5 Max. Value 1.5 pg/L
8 12/7/2017 < 3 1.5 Max. Pred Cw 0 DETECTS pg/L
9 1/22/2018 < 3 1.5
10 2/26/2018 < 3 1.5
11 3/12/2018 < 3 1.5
12 4/13/2018 < 3 1.5
13 5/3/2018 < 3 1.5
14 8/6/2018 < 3 1.5
15 9/11/2018 < 3 1.5
16 10/4/2018 < 3 1.5
17 11/21/2018 < 3 1.5
18 12/7/2018 < 3 1.5
19 1/18/2019 < 3 1.5
20 2/14/2019 < 3 1.5
21 3/26/2019 < 3 1.5
22 4/8/2019 < 3 1.5
23 5/7/2019 < 3 1.5
24 6/13/2019 < 3 1.5
25 7/22/2019 < 3 1.5
26 8/7/2019 < 3 1.5
27 10/15/2019 < 3 1.5
28 11/21/2019 < 3 1.5
29 12/18/2019 < 3 1.5
30 1/8/2020 < 2 1
31 2/18/2020 < 3 1.5
32 3/18/2020 < 3 1.5
33 4/21/2020 < 3 1.5
34 5/26/2020 < 3 1.5
35 6/12/2020 < 3 1.5
36 7/7/2020 < 3 1.5
37 8/12/2020 < 3 1.5
38 9/25/2020 < 3 1.5
39 10/15/2020 < 3 1.5
40 11/10/2020 < 3 1.5
41 12/2/2020 < 3 1.5
42 1/25/2021 < 3 1.5
43 2/4/2021 < 1.5 0.75
44 3/15/2021 < 0.5 0.25
45 4/6/2021 < 0.5 0.25
46 6/25/2021 < 1 0.5
47 7/8/2021 < 1 0.5
48 8/17/2021 < 3 1.5
49 9/2/2021 < 3 1.5
50 10/11/2021 < 3 1.5
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
MTBE (Methyl Tertiary -butyl Ether)
Date Data BDL=1/2DL Results
1 5/16/2017 < 5 2.5 Std Dev.
2 6/19/2017 < 5 2.5 Mean
3 7/10/2017 < 5 2.5 C.V.
4 8/9/2017 < 5 2.5 n
5 9/6/2017 < 5 2.5
6 10/23/2017 < 5 2.5 Mult Factor =
7 11/16/2017 < 5 2.5 Max. Value
8 12/7/2017 < 5 2.5 Max. Pred Cw
9 1/22/2018 < 5 2.5
10 2/26/2018 < 5 2.5
11 3/12/2018 < 5 2.5
12 4/13/2018 < 5 2.5
13 5/3/2018 < 5 2.5
14 8/6/2018 < 5 2.5
15 9/11/2018 < 5 2.5
16 10/4/2018 < 5 2.5
17 11/21/2018 < 5 2.5
18 12/7/2018 < 5 2.5
19 1/18/2019 < 5 2.5
20 2/14/2019 < 5 2.5
21 3/26/2019 < 5 2.5
22 4/8/2019 < 5 2.5
23 5/7/2019 < 5 2.5
24 6/13/2019 < 5 2.5
25 7/22/2019 < 5 2.5
26 8/7/2019 < 5 2.5
27 10/15/2019 < 5 2.5
28 11/21/2019 < 5 2.5
29 12/18/2019 < 5 2.5
30 1/8/2020 < 5 2.5
31 2/18/2020 < 5 2.5
32 3/18/2020 < 5 2.5
33 4/21/2020 < 5 2.5
34 5/26/2020 < 5 2.5
35 6/12/2020 < 5 2.5
36 7/7/2020 < 5 2.5
37 8/12/2020 < 5 2.5
38 9/25/2020 < 5 2.5
39 10/15/2020 < 5 2.5
40 11/10/2020 < 5 2.5
41 12/2/2020 < 5 2.5
42 1/25/2021 < 5 2.5
43 2/4/2021 < 1 0.5
44 3/15/2021 < 1 0.5
45 4/6/2021 < 1 0.5
46 6/25/2021 < 1 0.5
47 7/8/2021 < 1 0.5
48 8/17/2021 < 5 2.5
49 9/2/2021 < 5 2.5
50 10/11/2021 < 5 2.5
51
52
53
54
55
56
57
58
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall005_2021, data
- 3 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Values" then "COPY"
. Maximum data
points = 58
0.6061
2.3000
0.2635
50
1.0200
2.5 pg/L
0 DETECTS pg/L
Phenolic Compounds
Date Data BDL=1/2DL Results
1 5/16/2017 < 50 25 Std Dev. 13.6747
2 6/19/2017 < 50 25 Mean 27.0600
3 7/10/2017 < 50 25 C.V. 0.5053
4 8/9/2017 < 50 25 n 50
5 9/6/2017 < 50 25
6 10/23/2017 < 50 25 Mult Factor = 1.0400
7 11/16/2017 < 50 25 Max. Value 80.0 pg/L
8 12/7/2017 < 50 25 Max. Pred Cw 83.2 pg/L
9 1/22/2018 < 50 25
10 2/26/2018 < 50 25
11 3/12/2018 < 50 25
12 4/13/2018 < 50 25
13 5/3/2018 < 50 25
14 8/6/2018 65 65
15 9/11/2018 < 50 25
16 10/4/2018 < 50 25
17 11/21/2018 < 50 25
18 12/7/2018 < 50 25
19 1/18/2019 < 50 25
20 2/14/2019 < 50 25
21 3/26/2019 < 50 25
22 4/8/2019 < 50 25
23 5/7/2019 < 50 25
24 6/13/2019 < 50 25
25 7/22/2019 < 50 25
26 8/7/2019 < 50 25
27 10/15/2019 < 50 25
28 11/21/2019 < 50 25
29 12/18/2019 < 50 25
30 1/8/2020 < 50 25
31 2/18/2020 < 50 25
32 3/18/2020 < 50 25
33 4/21/2020 < 50 25
34 5/26/2020 < 50 25
35 6/12/2020 < 50 25
36 7/7/2020 < 50 25
37 8/12/2020 < 50 25
38 9/25/2020 80 80
39 10/15/2020 57 57
40 11/10/2020 < 50 25
41 12/2/2020 < 50 25
42 1/25/2021 76 76
43 2/4/2021 < 50 25
44 3/15/2021 < 50 25
45 4/6/2021 < 50 25
46 6/25/2021 < 20 10
47 7/8/2021 < 20 10
48 8/17/2021 < 20 10
49 9/2/2021 < 20 10
50 10/11/2021 < 20 10
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
Turbidity
Date
Data BDL=1/2DL
1.1
4.1
5.5
0.5
5.7
11
14
14
5.5
31
55
0.5
3.4
0.5
0.5
0.5
3.6
2.1
2.6
5.5
6.8
1.7
0.5
2.4
0.5
0.5
0.5
6.5
26
14
6
3
3.4
1.6
2.9
1
0.5
4.5
0.5
0.5
5.3
1.1
6.2
0.5
2.8
0.5
2.3
0.5
1.5
0.5
5/16/2017 1.1
6/19/2017 4.1
7/10/2017 5.5
8/9/2017 < 1
9/6/2017 5.7
10/23/2017 11
11/16/2017 14
12/7/2017 14
1/22/2018 5.5
2/26/2018 31
3/12/2018 55
4/13/2018 < 1
5/3/2018 3.4
8/6/2018 < 1
9/11/2018 < 1
10/4/2018 < 1
11/21/2018 3.6
12/7/2018 2.1
1/18/2019 2.6
2/14/2019 5.5
3/26/2019 6.8
4/8/2019 1.7
5/7/2019 < 1
6/13/2019 2.4
7/22/2019 < 1
8/7/2019 < 1
10/15/2019 < 1
11/21/2019 6.5
12/18/2019 26
1/8/2020 14
2/18/2020 6
3/18/2020 3
4/21/2020 3.4
5/26/2020 1.6
6/12/2020 2.9
7/7/2020 1
8/12/2020 < 1
9/25/2020 4.5
10/15/2020 < 1
11/10/2020 < 1
12/2/2020 5.3
1/25/2021 1.1
2/4/2021 6.2
3/15/2021 < 1
4/6/2021 2.8
6/25/2021 < 1
7/8/2021 2.3
8/17/2021 < 1
9/2/2021 1.5
10/11/2021 < 1
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11005_2021, data
- 4 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Results
Std Dev. 9.4233
Mean 5.4220
C.V. 1.7380
n 50
Values" then "COPY"
. Maximum data
points = 58
Mult Factor = 1.0900
Max. Value 55.0 NTU
Max. Pred Cw 60.0 NTU
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11005_2021, data
- 5 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
2016 Generic RPA (non -hardness dependent) - 95% Probability/95% Confidence
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 1. Project Information
❑ CHECK IF HQW OR ORW
Facility Name
WWTP/WTP Class
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
Stream Class
7Q10s (cfs)
7Q10w (cfs)
30Q2 (cfs)
QA (cfs)
1Q10s (cfs)
Data Source(s)
❑ CHECK TO APPLY MODEL
Charlotte Delivery Facility
PC-1
NC0031038
006
0.09700
UT to Gum Branch
WS-Iv
0.00
0.00
0.00
0.00
0.0 6
Follow directions for data entry. In some cases a
comment menu list the available choices or a
dropdown menu will provide a list you may select
from. Error message occur if data entry does not
meet input criteria.
Table 2. Parameters of Concern
Par01
Par02
Par03
Par04
Par05
Par06
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Par15
Par16
Par17
Par18
Par19
Par20
Par21
Par22
Name
Type Chronic
Modifier Acute
PQL Units
Benzene
C
1.19
WS
pg/L
Benzene
C
51
HH
pg/L
Toluene
NC
11
FW
pg/L
Toluene
NC
57
WS
pg/L
Toluene
NC
520
HH
pg/L
Ethylbenzene
NC
68
WS
pg/L
Ethylbenzene
NC
130
HH
pg/L
Ethylbenzene
NC
97
FW
pg/L
Xylenes Mixture
NC
6200
WS
pg/L
Xylenes Mixture
NC
670
FW
pg/L
Xylenes Mixture
NC
57000
HH
pg/L
Napthalene
NC
400
WS
pg/L
Napthalene
NC
12
FW
pg/L
Napthalene
NC
950
HH
pg/L
MTBE (Methyl Tertiary -butyl Ether)
C
19
WS
pg/L
MTBE (Methyl Tertiary -butyl Ether)
C
34000
FW
pg/L
MTBE (Methyl Tertiary -butyl Ether)
C
1500
HH
pg/L
Phenolic Compounds
NC
300
FW
iIg/L
Phenol
NC
4000
WS
pg/L
Phenol
NC
300000
HH
pg/L
Turbidity
NC
50
FW
NTU
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall006_2021, input
7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
Charlotte Delivery Facility REASONABLE POTENTIAL ANALYSIS
Outfall 006
NC0031038
2016 Generic RPA (non -hardness dependent) - 95% Probability/95% Confidence Qw = 0.097 MGD
Qw (MGD) = 0.09700
1Q10S (cfs) = 0.00
7Q10S (cfs) = 0.00
7Q1OW (cfs) = 0.00
30Q2 (cfs) = 0.00
Avg. Stream Flow, QA (cfs) = 0.00
Receiving Stream: UT to Gum Branch
MAXIMUM DATA POINTS = 58
WWTP/WTP Class: PC-1
IWC @ 1Q10S = ##########
IWC @ 7Q10S = ##########
IWC @ 7Q1OW = ##########
IWC @ 30Q2 = ##########
IWC @ QA = ##########
Stream Class: WS-IV
PARAMETER
TYPE
(1)
STANDARDS & CRITERIA (2)
J
a
en
Z
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC WQS / Applied 'Y2 FAV /
Chronic Standard Acute
ri # Det. Max Pred Cw Allowable Cw
Benzene
C
1.19 WS
µg/L
51 0
NO DETECTS
Acute: NO WQS
_ _ _ _____ _____
Chronic: 1.19
Max MDL = 1
_ _ _____
No detects
Toluene
NC
57 WS
µg/L
51 0
NO DETECTS
Acute: NO WQS
_ _ _ _____ _ ___
Chronic: 57.00
Max MDL = 1
_ _ ___________
No detects
Ethylbenzene
NC
68 WS
µg/L
51 0
NO DETECTS
Acute: NO WQS
_ _ _ _____ _ ___
Chronic: 68.00
Max MDL = 1
_ _ _______________________
No detects
Xylenes Mixture
NC
6200 WS
µg/L
51 0
NO DETECTS
Acute: NO WQS
_ _ _ _ _ _ _
Chronic: 6,200.00
Max MDL = 3
_ _ _ _ _ _ _ _ _ _ _ _ _ _
No detects
MTBE (Methyl Tertiary -butyl Ether)
C
19 WS
µg/L
51 0
NO DETECTS_
Acute: NO WQS
_ _ _____ _ ___
Chronic: 19.00
Max MDL = 5
_ _ _______________________
No detects
Phenolic Compounds
NC
300 FW
µg/L
51 4
78.3
Acute: NO WQS
_ _ _ _____ _ ___
Chronic: 300.00
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _____
No RP, Predicted Max < 50% of Allowbale Cw -
Monitoring required per current permitting strategy
Turbidity
NC
50 FW
NTU
51 44
53.5
Acute: NO WQS
_ _ _ _ _ _ _
Chronic: 50.00
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _ _ _
RP shown - apply Monthly Monitoring with Limit
Page 2 of 2
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall006_2021, rpa
7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Benzene
Date Data BDL=1/2DL Results
1 5/16/2017 < 0.5 0.25 Std Dev. 0.0813
2 6/19/2017 < 0.5 0.25 Mean 0.2794
3 7/10/2017 < 0.5 0.25 C.V. 0.2911
4 8/9/2017 < 0.5 0.25 n 51
5 9/6/2017 < 0.5 0.25
6 10/23/2017 < 0.5 0.25 Mult Factor = 1.0200
7 11/16/2017 < 0.5 0.25 Max. Value 0.5 pg/L
8 12/7/2017 < 0.5 0.25 Max. Pred Cw 0 DETECTS pg/L
9 1/22/2018 < 0.5 0.25
10 2/26/2018 < 0.5 0.25
11 3/12/2018 < 0.5 0.25
12 4/13/2018 < 0.5 0.25
13 5/3/2018 < 0.5 0.25
14 8/6/2018 < 0.5 0.25
15 9/11/2018 < 0.5 0.25
16 10/4/2018 < 0.5 0.25
17 11 /21 /2018 < 0.5 0.25
18 12/7/2018 < 0.5 0.25
19 1/18/2019 < 0.5 0.25
20 2/14/2019 < 0.5 0.25
21 3/26/2019 < 0.5 0.25
22 4/8/2019 < 0.5 0.25
23 5/7/2019 < 0.5 0.25
24 6/13/2019 < 0.5 0.25
25 7/22/2019 < 0.5 0.25
26 8/7/2019 < 0.5 0.25
27 10/15/2019 < 0.5 0.25
28 11 /21 /2019 < 0.5 0.25
29 12/18/2019 < 0.5 0.25
30 1/8/2020 < 0.5 0.25
31 2/18/2020 < 0.5 0.25
32 3/18/2020 < 0.5 0.25
33 4/21/2020 < 0.5 0.25
34 5/28/2020 < 0.5 0.25
35 6/12/2020 < 0.5 0.25
36 7/7/2020 < 0.5 0.25
37 8/12/2020 < 0.5 0.25
38 9/25/2020 < 0.5 0.25
39 10/15/2020 < 0.5 0.25
40 11/10/2020 < 0.5 0.25
41 12/2/2020 < 0.5 0.25
42 1/25/2021 < 0.5 0.25
43 2/4/2021 < 0.5 0.25
44 3/15/2021 < 0.5 0.25
45 4/6/2021 < 0.5 0.25
46 5/26/2021 < 1 0.5
47 6/25/2021 < 1 0.5
48 7/8/2021 < 1 0.5
49 8/17/2021 < 1 0.5
50 9/2/2021 < 1 0.5
51 10/11/2021 < 1 0.5
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
-1-
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11006_2021, data
7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Toluene
Date Data BDL=1/2DL Results
1 5/16/2017 < 1 0.5 Std Dev. 0.0594
2 6/19/2017 < 1 0.5 Mean 0.4853
3 7/10/2017 < 1 0.5 C.V. 0.1224
4 8/9/2017 < 1 0.5 n 51
5 9/6/2017 < 1 0.5
6 10/23/2017 < 1 0.5 Mult Factor = 1.0100
7 11/16/2017 < 1 0.5 Max. Value 0.5 pg/L
8 12/7/2017 < 1 0.5 Max. Pred Cw 0 DETECTS pg/L
9 1/22/2018 < 1 0.5
10 2/26/2018 < 1 0.5
11 3/12/2018 < 1 0.5
12 4/13/2018 < 1 0.5
13 5/3/2018 < 1 0.5
14 8/6/2018 < 1 0.5
15 9/11/2018 < 1 0.5
16 10/4/2018 < 1 0.5
17 11/21/2018 < 1 0.5
18 12/7/2018 < 1 0.5
19 1/18/2019 < 1 0.5
20 2/14/2019 < 1 0.5
21 3/26/2019 < 1 0.5
22 4/8/2019 < 1 0.5
23 5/7/2019 < 1 0.5
24 6/13/2019 < 1 0.5
25 7/22/2019 < 1 0.5
26 8/7/2019 < 1 0.5
27 10/15/2019 < 1 0.5
28 11/21/2019 < 1 0.5
29 12/18/2019 < 1 0.5
30 1/8/2020 < 1 0.5
31 2/18/2020 < 1 0.5
32 3/18/2020 < 1 0.5
33 4/21/2020 < 1 0.5
34 5/28/2020 < 1 0.5
35 6/12/2020 < 1 0.5
36 7/7/2020 < 1 0.5
37 8/12/2020 < 1 0.5
38 9/25/2020 < 1 0.5
39 10/15/2020 < 1 0.5
40 11/10/2020 < 1 0.5
41 12/2/2020 < 1 0.5
42 1/25/2021 < 1 0.5
43 2/4/2021 < 0.5 0.25
44 3/15/2021 < 0.5 0.25
45 4/6/2021 < 0.5 0.25
46 5/26/2021 < 1 0.5
47 6/25/2021 < 1 0.5
48 7/8/2021 < 1 0.5
49 8/17/2021 < 1 0.5
50 9/2/2021 < 1 0.5
51 10/11/2021 < 1 0.5
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
Ethylbenzene Values" then "i
. Maximum c
points = 5
Date Data BDL=1/2DL Results
1 5/16/2017 < 1 0.5 Std Dev. 0.0594
2 6/19/2017 < 1 0.5 Mean 0.4853
3 7/10/2017 < 1 0.5 C.V. 0.1224
4 8/9/2017 < 1 0.5 n 51
5 9/6/2017 < 1 0.5
6 10/23/2017 < 1 0.5 Mult Factor = 1.0100
7 11/16/2017 < 1 0.5 Max. Value 0.5
8 12/7/2017 < 1 0.5 Max. Pred Cw 0 DETECTS
9 1/22/2018 < 1 0.5
10 2/26/2018 < 1 0.5
11 3/12/2018 < 1 0.5
12 4/13/2018 < 1 0.5
13 5/3/2018 < 1 0.5
14 8/6/2018 < 1 0.5
15 9/11/2018 < 1 0.5
16 10/4/2018 < 1 0.5
17 11/21/2018 < 1 0.5
18 12/7/2018 < 1 0.5
19 1/18/2019 < 1 0.5
20 2/14/2019 < 1 0.5
21 3/26/2019 < 1 0.5
22 4/8/2019 < 1 0.5
23 5/7/2019 < 1 0.5
24 6/13/2019 < 1 0.5
25 7/22/2019 < 1 0.5
26 8/7/2019 < 1 0.5
27 10/15/2019 < 1 0.5
28 11/21/2019 < 1 0.5
29 12/18/2019 < 1 0.5
30 1/8/2020 < 1 0.5
31 2/18/2020 < 1 0.5
32 3/18/2020 < 1 0.5
33 4/21/2020 < 1 0.5
34 5/28/2020 < 1 0.5
35 6/12/2020 < 1 0.5
36 7/7/2020 < 1 0.5
37 8/12/2020 < 1 0.5
38 9/25/2020 < 1 0.5
39 10/15/2020 < 1 0.5
40 11/10/2020 < 1 0.5
41 12/2/2020 < 1 0.5
42 1/25/2021 < 1 0.5
43 2/4/2021 < 0.5 0.25
44 3/15/2021 < 0.5 0.25
45 4/6/2021 < 0.5 0.25
46 5/26/2021 < 1 0.5
47 6/25/2021 < 1 0.5
48 7/8/2021 < 1 0.5
49 8/17/2021 < 1 0.5
50 9/2/2021 < 1 0.5
51 10/11/2021 < 1 0.5
52
53
54
55
56
57
58
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11006_2021, data
- 2 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
COPY"
iata
18
Xylenes Mixture
pg/L
pg/L
Date Data BDL=1/2DL Results
1 5/16/2017 < 3 1.5 Std Dev. 0.3477
2 6/19/2017 < 3 1.5 Mean 1.3676
3 7/10/2017 < 3 1.5 C.V. 0.2542
4 8/9/2017 < 3 1.5 n 51
5 9/6/2017 < 3 1.5
6 10/23/2017 < 3 1.5 Mult Factor = 1.02
7 11/16/2017 < 3 1.5 Max. Value 1.5 pg/L
8 12/7/2017 < 3 1.5 Max. Pred Cw 0 DETECTS pg/L
9 1/22/2018 < 3 1.5
10 2/26/2018 < 3 1.5
11 3/12/2018 < 3 1.5
12 4/13/2018 < 3 1.5
13 5/3/2018 < 3 1.5
14 8/6/2018 < 3 1.5
15 9/11/2018 < 3 1.5
16 10/4/2018 < 3 1.5
17 11/21/2018 < 3 1.5
18 12/7/2018 < 3 1.5
19 1/18/2019 < 3 1.5
20 2/14/2019 < 3 1.5
21 3/26/2019 < 3 1.5
22 4/8/2019 < 3 1.5
23 5/7/2019 < 3 1.5
24 6/13/2019 < 3 1.5
25 7/22/2019 < 3 1.5
26 8/7/2019 < 3 1.5
27 10/15/2019 < 3 1.5
28 11/21/2019 < 3 1.5
29 12/18/2019 < 3 1.5
30 1/8/2020 < 2 1
31 2/18/2020 < 3 1.5
32 3/18/2020 < 3 1.5
33 4/21/2020 < 3 1.5
34 5/28/2020 < 3 1.5
35 6/12/2020 < 3 1.5
36 7/7/2020 < 3 1.5
37 8/12/2020 < 3 1.5
38 9/25/2020 < 3 1.5
39 10/15/2020 < 3 1.5
40 11/10/2020 < 3 1.5
41 12/2/2020 < 3 1.5
42 1/25/2021 < 3 1.5
43 2/4/2021 < 1.5 0.75
44 3/15/2021 < 0.5 0.25
45 4/6/2021 < 0.5 0.25
46 5/26/2021 < 1 0.5
47 6/25/2021 < 1 0.5
48 7/8/2021 < 1 0.5
49 8/17/2021 < 3 1.5
50 9/2/2021 < 3 1.5
51 10/11/2021 < 3 1.5
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
MTBE (Methyl Tertiary -butyl Ether)
Date Data BDL=1/2DL Results
1 5/16/2017 < 5 2.5 Std Dev.
2 6/19/2017 < 5 2.5 Mean
3 7/10/2017 < 5 2.5 C.V.
4 8/9/2017 < 5 2.5 n
5 9/6/2017 < 5 2.5
6 10/23/2017 < 5 2.5 Mult Factor =
7 11/16/2017 < 5 2.5 Max. Value
8 12/7/2017 < 5 2.5 Max. Pred Cw
9 1/22/2018 < 5 2.5
10 2/26/2018 < 5 2.5
11 3/12/2018 < 5 2.5
12 4/13/2018 < 5 2.5
13 5/3/2018 < 5 2.5
14 8/6/2018 < 5 2.5
15 9/11/2018 < 5 2.5
16 10/4/2018 < 5 2.5
17 11/21/2018 < 5 2.5
18 12/7/2018 < 5 2.5
19 1/18/2019 < 5 2.5
20 2/14/2019 < 5 2.5
21 3/26/2019 < 5 2.5
22 4/8/2019 < 5 2.5
23 5/7/2019 < 5 2.5
24 6/13/2019 < 5 2.5
25 7/22/2019 < 5 2.5
26 8/7/2019 < 5 2.5
27 10/15/2019 < 5 2.5
28 11/21/2019 < 5 2.5
29 12/18/2019 < 5 2.5
30 1/8/2020 < 5 2.5
31 2/18/2020 < 5 2.5
32 3/18/2020 < 5 2.5
33 4/21/2020 < 5 2.5
34 5/28/2020 < 5 2.5
35 6/12/2020 < 5 2.5
36 7/7/2020 < 5 2.5
37 8/12/2020 < 5 2.5
38 9/25/2020 < 5 2.5
39 10/15/2020 < 5 2.5
40 11/10/2020 < 5 2.5
41 12/2/2020 < 5 2.5
42 1/25/2021 < 5 2.5
43 2/4/2021 < 1 0.5
44 3/15/2021 < 1 0.5
45 4/6/2021 < 1 0.5
46 5/26/2021 < 1 0.5
47 6/25/2021 < 1 0.5
48 7/8/2021 < 1 0.5
49 8/17/2021 < 5 2.5
50 9/2/2021 < 5 2.5
51 10/11/2021 < 5 2.5
52
53
54
55
56
57
58
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall006_2021, data
- 3 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Values" then "COPY"
. Maximum data
points = 58
0.6508
2.2647
0.2874
51
1.0200
2.5 pg/L
0 DETECTS pg/L
Phenolic Compounds
Date
Data BDL=1/2DL Results
25 Std Dev. 12.2382
25 Mean 26.2647
59 C.V. 0.4660
25 n 51
25
25 Mult Factor = 1.0300
25 Max. Value 76.0 pg/L
25 Max. Pred Cw 78.3 pg/L
25
25
25
25
25
37
25
25
25
76
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
35.5
25
25
25
25
25
25
72
25
25
10
10
10
10
10
10
5/16/2017 < 50
6/19/2017 < 50
7/10/2017 59
8/9/2017 < 50
9/6/2017 < 50
10/23/2017 < 50
11/16/2017 < 50
12/7/2017 < 50
1/22/2018 < 50
2/26/2018 < 50
3/12/2018 < 50
4/13/2018 < 50
5/3/2018 < 50
8/6/2018 37
9/11/2018 < 50
10/4/2018 < 50
11/21/2018 < 50
12/7/2018 76
1/18/2019 < 50
2/14/2019 < 50
3/26/2019 < 50
4/8/2019 < 50
5/7/2019 < 50
6/13/2019 < 50
7/22/2019 < 50
8/7/2019 < 50
10/15/2019 < 50
11/21/2019 < 50
12/18/2019 < 50
1/8/2020 < 50
2/18/2020 < 50
3/18/2020 < 50
4/21/2020 < 50
5/28/2020 < 50
6/12/2020 < 50
7/7/2020 < 71
8/12/2020 < 50
9/25/2020 < 50
10/15/2020 < 50
11/10/2020 < 50
12/2/2020 < 50
1/25/2021 < 50
2/4/2021 72
3/15/2021 < 50
4/6/2021 < 50
5/26/2021 < 20
6/25/2021 < 20
7/8/2021 < 20
8/17/2021 < 20
9/2/2021 < 20
10/11/2021 < 20
Values" then "COPY"
. Maximum data
points = 58
Turbidity
Date
Data BDL=1/2DL
2.7
6.3
1.5
2.5
6.4
29
27
26
17
36
50
2
0.5
0.5
1
0.5
7.6
3.9
6
8.9
9.4
3.5
1.6
5.8
0.5
1.1
1.9
4.1
15
7.4
6.6
4.2
5.1
8.2
1.7
1
1.4
11
3.1
0.5
3.2
1.1
6.2
0.5
2.4
0.5
1.1
3.3
2.8
3.3
1.3
5/16/2017 2.7
6/19/2017 6.3
7/10/2017 1.5
8/9/2017 2.5
9/6/2017 6.4
10/23/2017 29
11/16/2017 27
12/7/2017 26
1/22/2018 17
2/26/2018 36
3/12/2018 50
4/13/2018 2
5/3/2018 < 1
8/6/2018 < 1
9/11/2018 1
10/4/2018 < 1
11/21/2018 7.6
12/7/2018 3.9
1/18/2019 6
2/14/2019 8.9
3/26/2019 9.4
4/8/2019 3.5
5/7/2019 1.6
6/13/2019 5.8
7/22/2019 < 1
8/7/2019 1.1
10/15/2019 1.9
11/21/2019 4.1
12/18/2019 15
1/8/2020 7.4
2/18/2020 6.6
3/18/2020 4.2
4/21/2020 5.1
5/28/2020 8.2
6/12/2020 1.7
7/7/2020 1
8/12/2020 1.4
9/25/2020 11
10/15/2020 3.1
11/10/2020 < 1
12/2/2020 3.2
1/25/2021 1.1
2/4/2021 6.2
3/15/2021 < 1
4/6/2021 2.4
5/26/2021 < 1
6/25/2021 1.1
7/8/2021 3.3
8/17/2021 2.8
9/2/2021 3.3
10/11/2021 1.3
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall006_2021, data
- 4 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Results
Std Dev. 9.9811
Mean 6.9431
C.V. 1.4375
n 51
Values" then "COPY"
. Maximum data
points = 58
Mult Factor = 1.0700
Max. Value 50.0 NTU
Max. Pred Cw 53.5 NTU
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11006_2021, data
- 5 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
2016 Generic RPA (non -hardness dependent) - 95% Probability/95% Confidence
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 1. Project Information
❑ CHECK IF HQW OR ORW
Facility Name
WWTP/WTP Class
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
Stream Class
7Q10s (cfs)
7Q10w (cfs)
30Q2 (cfs)
QA (cfs)
1Q10s (cfs)
Data Source(s)
❑ CHECK TO APPLY MODEL
Charlotte Delivery Facility
PC-1
NC0031038
007
0.09730
UT to Gum Branch
WS-Iv
0.00
0.00
0.00
0.00
0.0 6
Follow directions for data entry. In some cases a
comment menu list the available choices or a
dropdown menu will provide a list you may select
from. Error message occur if data entry does not
meet input criteria.
Table 2. Parameters of Concern
Par01
Par02
Par03
Par04
Par05
Par06
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Par15
Par16
Par17
Par18
Par19
Par20
Par21
Par22
Name
Type Chronic
Modifier Acute
PQL Units
Benzene
C
1.19
WS
pg/L
Benzene
C
51
HH
pg/L
Toluene
NC
11
FW
pg/L
Toluene
NC
57
WS
pg/L
Toluene
NC
520
HH
pg/L
Ethylbenzene
NC
68
WS
pg/L
Ethylbenzene
NC
130
HH
pg/L
Ethylbenzene
NC
97
FW
pg/L
Xylenes Mixture
NC
6200
WS
pg/L
Xylenes Mixture
NC
670
FW
pg/L
Xylenes Mixture
NC
57000
HH
pg/L
Napthalene
NC
400
WS
pg/L
Napthalene
NC
12
FW
pg/L
Napthalene
NC
950
HH
pg/L
MTBE (Methyl Tertiary -butyl Ether)
C
19
WS
pg/L
MTBE (Methyl Tertiary -butyl Ether)
C
34000
FW
pg/L
MTBE (Methyl Tertiary -butyl Ether)
C
1500
HH
pg/L
Phenolic Compounds
NC
300
FW
iIg/L
Phenol
NC
4000
WS
pg/L
Phenol
NC
300000
HH
pg/L
Turbidity
NC
50
FW
NTU
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall007_2021, input
7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
Charlotte Delivery Facility REASONABLE POTENTIAL ANALYSIS
Outfall 007
NC0031038
2016 Generic RPA (non -hardness dependent) - 95% Probability/95% Confidence Qw = 0.0973 MGD
Qw (MGD) = 0.09730
1Q10S (cfs) = 0.00
7Q10S (cfs) = 0.00
7Q1OW (cfs) = 0.00
30Q2 (cfs) = 0.00
Avg. Stream Flow, QA (cfs) = 0.00
Receiving Stream: UT to Gum Branch
MAXIMUM DATA POINTS = 58
WWTP/WTP Class: PC-1
IWC @ 1Q10S = ##########
IWC @ 7Q10S = ##########
IWC @ 7Q1OW = ##########
IWC @ 30Q2 = ##########
IWC @ QA = ##########
Stream Class: WS-IV
PARAMETER
TYPE
(1)
STANDARDS & CRITERIA (2)
J
a
en
E
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC WQS / Applied 'Y2 FAV /
Chronic Standard Acute
ri # Det. Max Pred Cw Allowable Cw
Benzene
C
1.19 WS
µg/L
49 0
NO DETECTS
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _ _ _
Chronic: 1.19
Max MDL = 1
_ _ _ _ _ _ _ _
No detects
Toluene
NC
57 WS
µg/L
49 0
NO DETECTS
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _ _
Chronic: 57.00
Max MDL = 1
_ _ _ _ _ _ _ _ _ _ _ _ _ _
No detects
Ethylbenzene
NC
68 WS
µg/L
49 0
NO DETECTS
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _ _
Chronic: 68.00
Max MDL = 1
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
No detects
Xylenes Mixture
NC
6200 WS
µg/L
49 0
NO DETECTS_
Acute: NO WQS
_ _ _ _ _ _ _ _ _
Chronic: 6,200.00
Max MDL = 3
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
No detects
MTBE (Methyl Tertiary -butyl Ether)
C
19 WS
µg/L
49 0
NO DETECTS
Acute: NO WQS
__ _ _ _ _ _ _ _ _ _ _
Chronic: 19.00
Max MDL = 5
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
No detects
Phenolic Compounds
NC
300 FW
µg/L
49 1
136.5
Acute: NO WQS
_ _ _ _____ _ _ _
Chronic: 300.00
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
No RP, Predicted Max < 50% of Allowbale Cw -
Monitoring required per current permitting strategy
Turbidity
NC
50 FW
NTU
49 40
570.0
Acute: NO WQS
_ _ _ _ _ _ _ _ _
Chronic: 50.00
3 value(s) > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _ _ _
p shown - apply Monthly Monitoring with Limit
Page 2 of 2
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall007_2021, rpa
7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Benzene
Date Data BDL=1/2DL Results
1 5/16/2017 < 0.5 0.25 Std Dev. 0.0828
2 6/19/2017 < 0.5 0.25 Mean 0.2806
3 7/10/2017 < 0.5 0.25 C.V. 0.2951
4 8/9/2017 < 0.5 0.25 n 49
5 9/6/2017 < 0.5 0.25
6 10/17/2017 < 0.5 0.25 Mult Factor = 1.0200
7 11/16/2017 < 0.5 0.25 Max. Value 0.5 pg/L
8 12/7/2017 < 0.5 0.25 Max. Pred Cw 0 DETECTS pg/L
9 1/22/2018 < 0.5 0.25
10 2/26/2018 < 0.5 0.25
11 3/12/2018 < 0.5 0.25
12 4/13/2018 < 0.5 0.25
13 5/3/2018 < 0.5 0.25
14 8/6/2018 < 0.5 0.25
15 9/11/2018 < 0.5 0.25
16 10/4/2018 < 0.5 0.25
17 11 /21 /2018 < 0.5 0.25
18 12/7/2018 < 0.5 0.25
19 1/18/2019 < 0.5 0.25
20 2/14/2019 < 0.5 0.25
21 3/26/2019 < 0.5 0.25
22 4/8/2019 < 0.5 0.25
23 5/7/2019 < 0.5 0.25
24 6/13/2019 < 0.5 0.25
25 7/22/2019 < 0.5 0.25
26 8/7/2019 < 0.5 0.25
27 10/15/2019 < 0.5 0.25
28 11 /21 /2019 < 0.5 0.25
29 12/23/2019 < 0.5 0.25
30 2/19/2020 < 0.5 0.25
31 4/27/2020 < 0.5 0.25
32 5/28/2020 < 0.5 0.25
33 6/12/2020 < 0.5 0.25
34 7/7/2020 < 0.5 0.25
35 8/12/2020 < 0.5 0.25
36 9/25/2020 < 0.5 0.25
37 10/15/2020 < 0.5 0.25
38 11/10/2020 < 0.5 0.25
39 12/2/2020 < 0.5 0.25
40 1/25/2021 < 0.5 0.25
41 2/4/2021 < 0.5 0.25
42 3/15/2021 < 0.5 0.25
43 4/6/2021 < 0.5 0.25
44 5/26/2021 < 1 0.5
45 6/25/2021 < 1 0.5
46 7/8/2021 < 1 0.5
47 8/17/2021 < 1 0.5
48 9/2/2021 < 1 0.5
49 10/11/2021 < 1 0.5
50
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
-1-
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11007_2021, data
7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Toluene
Date Data BDL=1/2DL Results
1 5/16/2017 < 1 0.5 Std Dev. 0.0606
2 6/19/2017 < 1 0.5 Mean 0.4847
3 7/10/2017 < 1 0.5 C.V. 0.1249
4 8/9/2017 < 1 0.5 n 49
5 9/6/2017 < 1 0.5
6 10/17/2017 < 1 0.5 Mult Factor = 1.0100
7 11/16/2017 < 1 0.5 Max. Value 0.5 pg/L
8 12/7/2017 < 1 0.5 Max. Pred Cw 0 DETECTS pg/L
9 1/22/2018 < 1 0.5
10 2/26/2018 < 1 0.5
11 3/12/2018 < 1 0.5
12 4/13/2018 < 1 0.5
13 5/3/2018 < 1 0.5
14 8/6/2018 < 1 0.5
15 9/11/2018 < 1 0.5
16 10/4/2018 < 1 0.5
17 11/21/2018 < 1 0.5
18 12/7/2018 < 1 0.5
19 1/18/2019 < 1 0.5
20 2/14/2019 < 1 0.5
21 3/26/2019 < 1 0.5
22 4/8/2019 < 1 0.5
23 5/7/2019 < 1 0.5
24 6/13/2019 < 1 0.5
25 7/22/2019 < 1 0.5
26 8/7/2019 < 1 0.5
27 10/15/2019 < 1 0.5
28 11/21/2019 < 1 0.5
29 12/23/2019 < 1 0.5
30 2/19/2020 < 1 0.5
31 4/27/2020 < 1 0.5
32 5/28/2020 < 1 0.5
33 6/12/2020 < 1 0.5
34 7/7/2020 < 1 0.5
35 8/12/2020 < 1 0.5
36 9/25/2020 < 1 0.5
37 10/15/2020 < 1 0.5
38 11/10/2020 < 1 0.5
39 12/2/2020 < 1 0.5
40 1/25/2021 < 1 0.5
41 2/4/2021 < 0.5 0.25
42 3/15/2021 < 0.5 0.25
43 4/6/2021 < 0.5 0.25
44 5/26/2021 < 1 0.5
45 6/25/2021 < 1 0.5
46 7/8/2021 < 1 0.5
47 8/17/2021 < 1 0.5
48 9/2/2021 < 1 0.5
49 10/11/2021 < 1 0.5
50
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
Ethylbenzene Values" then "i
. Maximum c
points = 5
Date Data BDL=1/2DL Results
1 5/16/2017 < 1 0.5 Std Dev. 0.0606
2 6/19/2017 < 1 0.5 Mean 0.4847
3 7/10/2017 < 1 0.5 C.V. 0.1249
4 8/9/2017 < 1 0.5 n 49
5 9/6/2017 < 1 0.5
6 10/17/2017 < 1 0.5 Mult Factor = 1.0100
7 11/16/2017 < 1 0.5 Max. Value 0.5
8 12/7/2017 < 1 0.5 Max. Pred Cw 0 DETECTS
9 1/22/2018 < 1 0.5
10 2/26/2018 < 1 0.5
11 3/12/2018 < 1 0.5
12 4/13/2018 < 1 0.5
13 5/3/2018 < 1 0.5
14 8/6/2018 < 1 0.5
15 9/11/2018 < 1 0.5
16 10/4/2018 < 1 0.5
17 11/21/2018 < 1 0.5
18 12/7/2018 < 1 0.5
19 1/18/2019 < 1 0.5
20 2/14/2019 < 1 0.5
21 3/26/2019 < 1 0.5
22 4/8/2019 < 1 0.5
23 5/7/2019 < 1 0.5
24 6/13/2019 < 1 0.5
25 7/22/2019 < 1 0.5
26 8/7/2019 < 1 0.5
27 10/15/2019 < 1 0.5
28 11/21/2019 < 1 0.5
29 12/23/2019 < 1 0.5
30 2/19/2020 < 1 0.5
31 4/27/2020 < 1 0.5
32 5/28/2020 < 1 0.5
33 6/12/2020 < 1 0.5
34 7/7/2020 < 1 0.5
35 8/12/2020 < 1 0.5
36 9/25/2020 < 1 0.5
37 10/15/2020 < 1 0.5
38 11/10/2020 < 1 0.5
39 12/2/2020 < 1 0.5
40 1/25/2021 < 1 0.5
41 2/4/2021 < 0.5 0.25
42 3/15/2021 < 0.5 0.25
43 4/6/2021 < 0.5 0.25
44 5/26/2021 < 1 0.5
45 6/25/2021 < 1 0.5
46 7/8/2021 < 1 0.5
47 8/17/2021 < 1 0.5
48 9/2/2021 < 1 0.5
49 10/11/2021 < 1 0.5
50
51
52
53
54
55
56
57
58
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11007_2021, data
- 2 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
COPY"
iata
18
Xylenes Mixture
pg/L
pg/L
Date Data BDL=1/2DL Results
1 5/16/2017 < 3 1.5 Std Dev. 0.3503
2 6/19/2017 < 3 1.5 Mean 1.3724
3 7/10/2017 < 3 1.5 C.V. 0.2552
4 8/9/2017 < 3 1.5 n 49
5 9/6/2017 < 3 1.5
6 10/17/2017 < 3 1.5 Mult Factor = 1.02
7 11/16/2017 < 3 1.5 Max. Value 1.5 pg/L
8 12/7/2017 < 3 1.5 Max. Pred Cw 0 DETECTS pg/L
9 1/22/2018 < 3 1.5
10 2/26/2018 < 3 1.5
11 3/12/2018 < 3 1.5
12 4/13/2018 < 3 1.5
13 5/3/2018 < 3 1.5
14 8/6/2018 < 3 1.5
15 9/11/2018 < 3 1.5
16 10/4/2018 < 3 1.5
17 11/21/2018 < 3 1.5
18 12/7/2018 < 3 1.5
19 1/18/2019 < 3 1.5
20 2/14/2019 < 3 1.5
21 3/26/2019 < 3 1.5
22 4/8/2019 < 3 1.5
23 5/7/2019 < 3 1.5
24 6/13/2019 < 3 1.5
25 7/22/2019 < 3 1.5
26 8/7/2019 < 3 1.5
27 10/15/2019 < 3 1.5
28 11/21/2019 < 3 1.5
29 12/23/2019 < 3 1.5
30 2/19/2020 < 3 1.5
31 4/27/2020 < 3 1.5
32 5/28/2020 < 3 1.5
33 6/12/2020 < 3 1.5
34 7/7/2020 < 3 1.5
35 8/12/2020 < 3 1.5
36 9/25/2020 < 3 1.5
37 10/15/2020 < 3 1.5
38 11/10/2020 < 3 1.5
39 12/2/2020 < 3 1.5
40 1/25/2021 < 3 1.5
41 2/4/2021 < 1.5 0.75
42 3/15/2021 < 0.5 0.25
43 4/6/2021 < 0.5 0.25
44 5/26/2021 < 1 0.5
45 6/25/2021 < 1 0.5
46 7/8/2021 < 1 0.5
47 8/17/2021 < 3 1.5
48 9/2/2021 < 3 1.5
49 10/11/2021 < 3 1.5
50
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
MTBE (Methyl Tertiary -butyl Ether)
Date Data BDL=1/2DL Results
1 5/16/2017 < 5 2.5 Std Dev.
2 6/19/2017 < 5 2.5 Mean
3 7/10/2017 < 5 2.5 C.V.
4 8/9/2017 < 5 2.5 n
5 9/6/2017 < 5 2.5
6 10/17/2017 < 5 2.5 Mult Factor =
7 11/16/2017 < 5 2.5 Max. Value
8 12/7/2017 < 5 2.5 Max. Pred Cw
9 1/22/2018 < 5 2.5
10 2/26/2018 < 5 2.5
11 3/12/2018 < 5 2.5
12 4/13/2018 < 5 2.5
13 5/3/2018 < 5 2.5
14 8/6/2018 < 5 2.5
15 9/11/2018 < 5 2.5
16 10/4/2018 < 5 2.5
17 11/21/2018 < 5 2.5
18 12/7/2018 < 5 2.5
19 1/18/2019 < 5 2.5
20 2/14/2019 < 5 2.5
21 3/26/2019 < 5 2.5
22 4/8/2019 < 5 2.5
23 5/7/2019 < 5 2.5
24 6/13/2019 < 5 2.5
25 7/22/2019 < 5 2.5
26 8/7/2019 < 5 2.5
27 10/15/2019 < 5 2.5
28 11/21/2019 < 5 2.5
29 12/23/2019 < 5 2.5
30 2/19/2020 < 5 2.5
31 4/27/2020 < 5 2.5
32 5/28/2020 < 5 2.5
33 6/12/2020 < 5 2.5
34 7/7/2020 < 5 2.5
35 8/12/2020 < 5 2.5
36 9/25/2020 < 5 2.5
37 10/15/2020 < 5 2.5
38 11/10/2020 < 5 2.5
39 12/2/2020 < 5 2.5
40 1/25/2021 < 5 2.5
41 2/4/2021 < 1 0.5
42 3/15/2021 < 1 0.5
43 4/6/2021 < 1 0.5
44 5/26/2021 < 1 0.5
45 6/25/2021 < 1 0.5
46 7/8/2021 < 1 0.5
47 8/17/2021 < 5 2.5
48 9/2/2021 < 5 2.5
49 10/11/2021 < 5 2.5
50
51
52
53
54
55
56
57
58
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall007_2021, data
- 3 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Values" then "COPY"
. Maximum data
points = 58
0.6624
2.2551
0.2937
49
1.0200
2.5 pg/L
0 DETECTS pg/L
Phenolic Compounds
Date
Data BDL=1/2DL Results
25 Std Dev. 16.1193
25 Mean 25.5204
25 C.V. 0.6316
25 n 49
25
25 Mult Factor = 1.0500
25 Max. Value 130.0 pg/L
25 Max. Pred Cw 136.5 pg/L
25
25
25
25
25
130
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
35.5
25
25
25
25
25
25
25
25
25
10
10
10
10
10
10
5/16/2017 < 50
6/19/2017 < 50
7/10/2017 < 50
8/9/2017 < 50
9/6/2017 < 50
10/17/2017 < 50
11/16/2017 < 50
12/7/2017 < 50
1/22/2018 < 50
2/26/2018 < 50
3/12/2018 < 50
4/13/2018 < 50
5/3/2018 < 50
8/6/2018 130
9/11/2018 < 50
10/4/2018 < 50
11/21/2018 < 50
12/7/2018 < 50
1/18/2019 < 50
2/14/2019 < 50
3/26/2019 < 50
4/8/2019 < 50
5/7/2019 < 50
6/13/2019 < 50
7/22/2019 < 50
8/7/2019 < 50
10/15/2019 < 50
11/21/2019 < 50
12/23/2019 < 50
2/19/2020 < 50
4/27/2020 < 50
5/28/2020 < 50
6/12/2020 < 50
7/7/2020 < 71
8/12/2020 < 50
9/25/2020 < 50
10/15/2020 < 50
11/10/2020 < 50
12/2/2020 < 50
1/25/2021 < 50
2/4/2021 < 50
3/15/2021 < 50
4/6/2021 < 50
5/26/2021 < 20
6/25/2021 < 20
7/8/2021 < 20
8/17/2021 < 20
9/2/2021 < 20
10/11/2021 < 20
Values" then "COPY"
. Maximum data
points = 58
Turbidity
Date
Data BDL=1/2DL
1.6
8.2
3.7
1
1.2
2.8
2.4
5.1
2.6
8.7
15
1.1
0.5
2.1
0.5
0.5
6
15
24
32
14
6
5.8
13
0.5
0.5
32
70
500
65
37
45
5
1
4.2
14
13
0.5
26
2.3
39
2.3
27
0.5
0.5
2.9
5.7
5
0.5
5/16/2017 1.6
6/19/2017 8.2
7/10/2017 3.7
8/9/2017 1
9/6/2017 1.2
10/17/2017 2.8
11/16/2017 2.4
12/7/2017 5.1
1/22/2018 2.6
2/26/2018 8.7
3/12/2018 15
4/13/2018 1.1
5/3/2018 < 1
8/6/2018 2.1
9/11/2018 < 1
10/4/2018 < 1
11/21/2018 6
12/7/2018 15
1/18/2019 24
2/14/2019 32
3/26/2019 14
4/8/2019 6
5/7/2019 5.8
6/13/2019 13
7/22/2019 < 1
8/7/2019 < 1
10/15/2019 32
11/21/2019 70
12/23/2019 500
2/19/2020 65
4/27/2020 37
5/28/2020 45
6/12/2020 5
7/7/2020 1
8/12/2020 4.2
9/25/2020 14
10/15/2020 13
11/10/2020 < 1
12/2/2020 26
1/25/2021 2.3
2/4/2021 39
3/15/2021 2.3
4/6/2021 27
5/26/2021 < 1
6/25/2021 < 1
7/8/2021 2.9
8/17/2021 5.7
9/2/2021 5
10/11/2021 < 1
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11007_2021, data
- 4 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Results
Std Dev. 71.6224
Mean 21.8816
C.V. 3.2732
n 49
Values" then "COPY"
. Maximum data
points = 58
Mult Factor = 1.1400
Max. Value 500.0 NTU
Max. Pred Cw 570.0 NTU
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11007_2021, data
- 5 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
2016 Generic RPA (non -hardness dependent) - 95% Probability/95% Confidence
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 1. Project Information
❑ CHECK IF HQW OR ORW
Facility Name
WWTP/WTP Class
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
Stream Class
7Q10s (cfs)
7Q10w (cfs)
30Q2 (cfs)
QA (cfs)
1Q10s (cfs)
Data Source(s)
❑ CHECK TO APPLY MODEL
Charlotte Delivery Facility
PC-1
NC0031038
008
0.13700
UT to Gum Branch
WS-Iv
0.00
0.00
0.00
0.00
0.0 6
Follow directions for data entry. In some cases a
comment menu list the available choices or a
dropdown menu will provide a list you may select
from. Error message occur if data entry does not
meet input criteria.
Table 2. Parameters of Concern
Par01
Par02
Par03
Par04
Par05
Par06
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Par15
Par16
Par17
Par18
Par19
Par20
Par21
Par22
Name
Type Chronic
Modifier Acute
PQL Units
Benzene
C
1.19
WS
pg/L
Benzene
C
51
HH
pg/L
Toluene
NC
11
FW
pg/L
Toluene
NC
57
WS
pg/L
Toluene
NC
520
HH
pg/L
Ethylbenzene
NC
68
WS
pg/L
Ethylbenzene
NC
130
HH
pg/L
Ethylbenzene
NC
97
FW
pg/L
Xylenes Mixture
NC
6200
WS
pg/L
Xylenes Mixture
NC
670
FW
pg/L
Xylenes Mixture
NC
57000
HH
pg/L
Napthalene
NC
400
WS
pg/L
Napthalene
NC
12
FW
pg/L
Napthalene
NC
950
HH
pg/L
MTBE (Methyl Tertiary -butyl Ether)
C
19
WS
pg/L
MTBE (Methyl Tertiary -butyl Ether)
C
34000
FW
pg/L
MTBE (Methyl Tertiary -butyl Ether)
C
1500
HH
pg/L
Phenolic Compounds
NC
300
FW
iIg/L
Phenol
NC
4000
WS
pg/L
Phenol
NC
300000
HH
pg/L
Turbidity
NC
50
FW
NTU
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall008_2021, input
7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
Charlotte Delivery Facility REASONABLE POTENTIAL ANALYSIS
Outfall 008
NC0031038
2016 Generic RPA (non -hardness dependent) - 95% Probability/95% Confidence Qw = 0.137 MGD
Qw (MGD) = 0.13700
1Q10S (cfs) = 0.00
7Q10S (cfs) = 0.00
7Q1OW (cfs) = 0.00
30Q2 (cfs) = 0.00
Avg. Stream Flow, QA (cfs) = 0.00
Receiving Stream: UT to Gum Branch
MAXIMUM DATA POINTS = 58
WWTP/WTP Class: PC-1
IWC @ 1Q10S = ##########
IWC @ 7Q10S = ##########
IWC @ 7Q1OW = ##########
IWC @ 30Q2 = ##########
IWC @ QA = ##########
Stream Class: WS-IV
PARAMETER
TYPE
(1)
STANDARDS & CRITERIA (2)
J
a
en
E
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC WQS / Applied '/2 FAV /
Chronic Standard Acute
ri # Det. Max Pred Cw Allowable Cw
Benzene
C
1.19 WS
µg/L
51 0
NO DETECTS
Acute: NO WQS
_ _ _ _____ _____
Chronic: 1.19
Max MDL = 1
_ _ _____
No detects
Toluene
NC
57 WS
µg/L
51 0
NO DETECTS
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _ _
Chronic: 57.00
Max MDL = 1
_ _ _ _ _ _ _ _ _ _ _ _ _ _
No detects
Ethylbenzene
NC
68 WS
µg/L
51 0
NO DETECTS
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _ _
Chronic: 68.00
Max MDL = 1
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
No detects
Xylenes Mixture
NC
6200 WS
µg/L
51 0
NO DETECTS_
Acute: NO WQS
_ _ _ _ _ _ _ _ _
Chronic: 6,200.00
Max MDL = 3
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
No detects
MTBE (Methyl Tertiary -butyl Ether)
C
19 WS
µg/L
51 0
NO DETECTS_
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _
Chronic: 19.00
Max MDL = 5
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
No detects
Phenolic Compounds
NC
300 FW
µg/L
51 3
233.2
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _ _
Chronic: 300.00
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
No RP, Predicted Max >_ 50% of Allowable Cw -
Monitoring required per current permitting strategy
Turbidity
NC
50 FW
NTU
51 48
74.9
Acute: NO WQS
_ _ _ _____
Chronic: 50.00
1 value(s) > Allowable Cw
P shown - apply Monthly Monitoring with Limit
Page 2 of 2
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11008_2021, rpa
7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Benzene
Date Data BDL=1/2DL Results
1 5/16/2017 < 0.5 0.25 Std Dev. 0.0813
2 6/19/2017 < 0.5 0.25 Mean 0.2794
3 7/10/2017 < 0.5 0.25 C.V. 0.2911
4 8/9/2017 < 0.5 0.25 n 51
5 9/6/2017 < 0.5 0.25
6 10/17/2017 < 0.5 0.25 Mult Factor = 1.0200
7 11/16/2017 < 0.5 0.25 Max. Value 0.5 pg/L
8 12/7/2017 < 0.5 0.25 Max. Pred Cw 0 DETECTS pg/L
9 1/22/2018 < 0.5 0.25
10 2/26/2018 < 0.5 0.25
11 3/12/2018 < 0.5 0.25
12 4/13/2018 < 0.5 0.25
13 5/3/2018 < 0.5 0.25
14 8/17/2018 < 0.5 0.25
15 9/11/2018 < 0.5 0.25
16 10/4/2018 < 0.5 0.25
17 11 /21 /2018 < 0.5 0.25
18 12/7/2018 < 0.5 0.25
19 1/18/2019 < 0.5 0.25
20 2/14/2019 < 0.5 0.25
21 3/26/2019 < 0.5 0.25
22 4/8/2019 < 0.5 0.25
23 5/7/2019 < 0.5 0.25
24 6/13/2019 < 0.5 0.25
25 7/22/2019 < 0.5 0.25
26 8/7/2019 < 0.5 0.25
27 10/15/2019 < 0.5 0.25
28 11 /21 /2019 < 0.5 0.25
29 12/18/2019 < 0.5 0.25
30 1/8/2020 < 0.5 0.25
31 2/19/2020 < 0.5 0.25
32 3/18/2020 < 0.5 0.25
33 4/14/2020 < 0.5 0.25
34 5/26/2020 < 0.5 0.25
35 6/12/2020 < 0.5 0.25
36 7/7/2020 < 0.5 0.25
37 8/12/2020 < 0.5 0.25
38 9/16/2020 < 0.5 0.25
39 10/15/2020 < 0.5 0.25
40 11/10/2020 < 0.5 0.25
41 12/2/2020 < 0.5 0.25
42 1/25/2021 < 0.5 0.25
43 2/4/2021 < 0.5 0.25
44 3/15/2021 < 0.5 0.25
45 4/6/2021 < 0.5 0.25
46 5/26/2021 < 1 0.5
47 6/25/2021 < 1 0.5
48 7/8/2021 < 1 0.5
49 8/17/2021 < 1 0.5
50 9/2/2021 < 1 0.5
51 10/11/2021 < 1 0.5
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
-1-
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11008_2021, data
7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Toluene
Date Data BDL=1/2DL Results
1 5/16/2017 < 1 0.5 Std Dev. 0.0594
2 6/19/2017 < 1 0.5 Mean 0.4853
3 7/10/2017 < 1 0.5 C.V. 0.1224
4 8/9/2017 < 1 0.5 n 51
5 9/6/2017 < 1 0.5
6 10/17/2017 < 1 0.5 Mult Factor = 1.0100
7 11/16/2017 < 1 0.5 Max. Value 0.5 pg/L
8 12/7/2017 < 1 0.5 Max. Pred Cw 0 DETECTS pg/L
9 1/22/2018 < 1 0.5
10 2/26/2018 < 1 0.5
11 3/12/2018 < 1 0.5
12 4/13/2018 < 1 0.5
13 5/3/2018 < 1 0.5
14 8/17/2018 < 1 0.5
15 9/11/2018 < 1 0.5
16 10/4/2018 < 1 0.5
17 11/21/2018 < 1 0.5
18 12/7/2018 < 1 0.5
19 1/18/2019 < 1 0.5
20 2/14/2019 < 1 0.5
21 3/26/2019 < 1 0.5
22 4/8/2019 < 1 0.5
23 5/7/2019 < 1 0.5
24 6/13/2019 < 1 0.5
25 7/22/2019 < 1 0.5
26 8/7/2019 < 1 0.5
27 10/15/2019 < 1 0.5
28 11/21/2019 < 1 0.5
29 12/18/2019 < 1 0.5
30 1/8/2020 < 1 0.5
31 2/19/2020 < 1 0.5
32 3/18/2020 < 1 0.5
33 4/14/2020 < 1 0.5
34 5/26/2020 < 1 0.5
35 6/12/2020 < 1 0.5
36 7/7/2020 < 1 0.5
37 8/12/2020 < 1 0.5
38 9/16/2020 < 1 0.5
39 10/15/2020 < 1 0.5
40 11/10/2020 < 1 0.5
41 12/2/2020 < 1 0.5
42 1/25/2021 < 1 0.5
43 2/4/2021 < 0.5 0.25
44 3/15/2021 < 0.5 0.25
45 4/6/2021 < 0.5 0.25
46 5/26/2021 < 1 0.5
47 6/25/2021 < 1 0.5
48 7/8/2021 < 1 0.5
49 8/17/2021 < 1 0.5
50 9/2/2021 < 1 0.5
51 10/11/2021 < 1 0.5
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
Ethylbenzene Values" then "i
. Maximum c
points = 5
Date Data BDL=1/2DL Results
1 5/16/2017 < 1 0.5 Std Dev. 0.0594
2 6/19/2017 < 1 0.5 Mean 0.4853
3 7/10/2017 < 1 0.5 C.V. 0.1224
4 8/9/2017 < 1 0.5 n 51
5 9/6/2017 < 1 0.5
6 10/17/2017 < 1 0.5 Mult Factor = 1.0100
7 11/16/2017 < 1 0.5 Max. Value 0.5
8 12/7/2017 < 1 0.5 Max. Pred Cw 0 DETECTS
9 1/22/2018 < 1 0.5
10 2/26/2018 < 1 0.5
11 3/12/2018 < 1 0.5
12 4/13/2018 < 1 0.5
13 5/3/2018 < 1 0.5
14 8/17/2018 < 1 0.5
15 9/11/2018 < 1 0.5
16 10/4/2018 < 1 0.5
17 11/21/2018 < 1 0.5
18 12/7/2018 < 1 0.5
19 1/18/2019 < 1 0.5
20 2/14/2019 < 1 0.5
21 3/26/2019 < 1 0.5
22 4/8/2019 < 1 0.5
23 5/7/2019 < 1 0.5
24 6/13/2019 < 1 0.5
25 7/22/2019 < 1 0.5
26 8/7/2019 < 1 0.5
27 10/15/2019 < 1 0.5
28 11/21/2019 < 1 0.5
29 12/18/2019 < 1 0.5
30 1/8/2020 < 1 0.5
31 2/19/2020 < 1 0.5
32 3/18/2020 < 1 0.5
33 4/14/2020 < 1 0.5
34 5/26/2020 < 1 0.5
35 6/12/2020 < 1 0.5
36 7/7/2020 < 1 0.5
37 8/12/2020 < 1 0.5
38 9/16/2020 < 1 0.5
39 10/15/2020 < 1 0.5
40 11/10/2020 < 1 0.5
41 12/2/2020 < 1 0.5
42 1/25/2021 < 1 0.5
43 2/4/2021 < 0.5 0.25
44 3/15/2021 < 0.5 0.25
45 4/6/2021 < 0.5 0.25
46 5/26/2021 < 1 0.5
47 6/25/2021 < 1 0.5
48 7/8/2021 < 1 0.5
49 8/17/2021 < 1 0.5
50 9/2/2021 < 1 0.5
51 10/11/2021 < 1 0.5
52
53
54
55
56
57
58
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11008_2021, data
- 2 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
COPY"
iata
18
Xylenes Mixture
pg/L
pg/L
Date Data BDL=1/2DL Results
1 5/16/2017 < 3 1.5 Std Dev. 0.3477
2 6/19/2017 < 3 1.5 Mean 1.3676
3 7/10/2017 < 3 1.5 C.V. 0.2542
4 8/9/2017 < 3 1.5 n 51
5 9/6/2017 < 3 1.5
6 10/17/2017 < 3 1.5 Mult Factor = 1.02
7 11/16/2017 < 3 1.5 Max. Value 1.5 pg/L
8 12/7/2017 < 3 1.5 Max. Pred Cw 0 DETECTS pg/L
9 1/22/2018 < 3 1.5
10 2/26/2018 < 3 1.5
11 3/12/2018 < 3 1.5
12 4/13/2018 < 3 1.5
13 5/3/2018 < 3 1.5
14 8/17/2018 < 3 1.5
15 9/11/2018 < 3 1.5
16 10/4/2018 < 3 1.5
17 11/21/2018 < 3 1.5
18 12/7/2018 < 3 1.5
19 1/18/2019 < 3 1.5
20 2/14/2019 < 3 1.5
21 3/26/2019 < 3 1.5
22 4/8/2019 < 3 1.5
23 5/7/2019 < 3 1.5
24 6/13/2019 < 3 1.5
25 7/22/2019 < 3 1.5
26 8/7/2019 < 3 1.5
27 10/15/2019 < 3 1.5
28 11/21/2019 < 3 1.5
29 12/18/2019 < 3 1.5
30 1/8/2020 < 2 1
31 2/19/2020 < 3 1.5
32 3/18/2020 < 3 1.5
33 4/14/2020 < 3 1.5
34 5/26/2020 < 3 1.5
35 6/12/2020 < 3 1.5
36 7/7/2020 < 3 1.5
37 8/12/2020 < 3 1.5
38 9/16/2020 < 3 1.5
39 10/15/2020 < 3 1.5
40 11/10/2020 < 3 1.5
41 12/2/2020 < 3 1.5
42 1/25/2021 < 3 1.5
43 2/4/2021 < 1.5 0.75
44 3/15/2021 < 0.5 0.25
45 4/6/2021 < 0.5 0.25
46 5/26/2021 < 1 0.5
47 6/25/2021 < 1 0.5
48 7/8/2021 < 1 0.5
49 8/17/2021 < 3 1.5
50 9/2/2021 < 3 1.5
51 10/11/2021 < 3 1.5
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
MTBE (Methyl Tertiary -butyl Ether)
Date Data BDL=1/2DL Results
1 5/16/2017 < 5 2.5 Std Dev.
2 6/19/2017 < 5 2.5 Mean
3 7/10/2017 < 5 2.5 C.V.
4 8/9/2017 < 5 2.5 n
5 9/6/2017 < 5 2.5
6 10/17/2017 < 5 2.5 Mult Factor =
7 11/16/2017 < 5 2.5 Max. Value
8 12/7/2017 < 5 2.5 Max. Pred Cw
9 1/22/2018 < 5 2.5
10 2/26/2018 < 5 2.5
11 3/12/2018 < 5 2.5
12 4/13/2018 < 5 2.5
13 5/3/2018 < 5 2.5
14 8/17/2018 < 5 2.5
15 9/11/2018 < 5 2.5
16 10/4/2018 < 5 2.5
17 11/21/2018 < 5 2.5
18 12/7/2018 < 5 2.5
19 1/18/2019 < 5 2.5
20 2/14/2019 < 5 2.5
21 3/26/2019 < 5 2.5
22 4/8/2019 < 5 2.5
23 5/7/2019 < 5 2.5
24 6/13/2019 < 5 2.5
25 7/22/2019 < 5 2.5
26 8/7/2019 < 5 2.5
27 10/15/2019 < 5 2.5
28 11/21/2019 < 5 2.5
29 12/18/2019 < 5 2.5
30 1/8/2020 < 5 2.5
31 2/19/2020 < 5 2.5
32 3/18/2020 < 5 2.5
33 4/14/2020 < 5 2.5
34 5/26/2020 < 5 2.5
35 6/12/2020 < 5 2.5
36 7/7/2020 < 5 2.5
37 8/12/2020 < 5 2.5
38 9/16/2020 < 5 2.5
39 10/15/2020 < 5 2.5
40 11/10/2020 < 5 2.5
41 12/2/2020 < 5 2.5
42 1/25/2021 < 5 2.5
43 2/4/2021 < 1 0.5
44 3/15/2021 < 1 0.5
45 4/6/2021 < 1 0.5
46 5/26/2021 < 1 0.5
47 6/25/2021 < 1 0.5
48 7/8/2021 < 1 0.5
49 8/17/2021 < 5 2.5
50 9/2/2021 < 5 2.5
51 10/11/2021 < 5 2.5
52
53
54
55
56
57
58
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall008_2021, data
- 3 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Values" then "COPY"
. Maximum data
points = 58
0.6508
2.2647
0.2874
51
1.0200
2.5 pg/L
0 DETECTS pg/L
Phenolic Compounds
Date
Data BDL=1/2DL Results
25 Std Dev. 29.3296
25 Mean 28.8235
25 C.V. 1.0176
25 n 51
25
25 Melt Factor = 1.0600
25 Max. Value 220.0 pg/L
25 Max. Pred Cw 233.2 pg/L
25
25
25
25
25
84
25
25
25
220
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
26
25
55
25
25
25
25
25
25
25
10
10
10
10
10
10
5/16/2017 < 50
6/19/2017 < 50
7/10/2017 < 50
8/9/2017 < 50
9/6/2017 < 50
10/17/2017 < 50
11/16/2017 < 50
12/7/2017 < 50
1/22/2018 < 50
2/26/2018 < 50
3/12/2018 < 50
4/13/2018 < 50
5/3/2018 < 50
8/6/2018 84
9/11/2018 < 50
10/4/2018 < 50
11/21/2018 < 50
12/7/2018 220
1/18/2019 < 50
2/14/2019 < 50
3/26/2019 < 50
4/8/2019 < 50
5/7/2019 < 50
6/13/2019 < 50
7/22/2019 < 50
8/7/2019 < 50
10/15/2019 < 50
11/21/2019 < 50
12/18/2019 < 50
1/8/2020 < 50
2/19/2020 < 50
3/18/2020 < 50
4/14/2020 < 50
5/26/2020 < 50
6/12/2020 < 50
7/7/2020 < 52
8/12/2020 < 50
9/16/2020 55
10/15/2020 < 50
11/10/2020 < 50
12/2/2020 < 50
1/25/2021 < 50
2/4/2021 < 50
3/15/2021 < 50
4/6/2021 < 50
5/26/2021 < 20
6/25/2021 < 20
7/8/2021 < 20
8/17/2021 < 20
9/2/2021 < 20
10/11/2021 < 20
Values" then "COPY"
. Maximum data
points = 58
Turbidity
Date
Data BDL=1/2DL
2
10
2.8
1.8
6.3
3.2
4.1
5.2
4.7
6.7
14
1.4
2.4
4
1.4
1.2
11
14
27
16
7.1
5.9
2.3
7.5
1.2
1.3
1.4
17
70
20
32
45
28
19
7.6
7
7.7
0.5
5.4
0.5
11
2.4
20
2.2
3.5
1.1
1.9
2.8
2
4
0.5
5/16/2017 2
6/19/2017 10
7/10/2017 2.8
8/9/2017 1.8
9/6/2017 6.3
10/17/2017 3.2
11/16/2017 4.1
12/7/2017 5.2
1/22/2018 4.7
2/26/2018 6.7
3/12/2018 14
4/13/2018 1.4
5/3/2018 2.4
8/6/2018 4
9/11/2018 1.4
10/4/2018 1.2
11/21/2018 11
12/7/2018 14
1/18/2019 27
2/14/2019 16
3/26/2019 7.1
4/8/2019 5.9
5/7/2019 2.3
6/13/2019 7.5
7/22/2019 1.2
8/7/2019 1.3
10/15/2019 1.4
11/21/2019 17
12/18/2019 70
1/8/2020 20
2/19/2020 32
3/18/2020 45
4/14/2020 28
5/26/2020 19
6/12/2020 7.6
7/7/2020 7
8/12/2020 7.7
9/16/2020 < 1
10/15/2020 5.4
11/10/2020 < 1
12/2/2020 11
1/25/2021 2.4
2/4/2021 20
3/15/2021 2.2
4/6/2021 3.5
5/26/2021 1.1
6/25/2021 1.9
7/8/2021 2.8
8/17/2021 2
9/2/2021 4
10/11/2021 < 1
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall008_2021, data
- 4 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Results
Std Dev. 12.6862
Mean 9.3529
C.V. 1.3564
n 51
Values" then "COPY"
. Maximum data
points = 58
Mult Factor = 1.0700
Max. Value 70.0 NTU
Max. Pred Cw 74.9 NTU
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11008_2021, data
- 5 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
2016 Generic RPA (non -hardness dependent) - 95% Probability/95% Confidence
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 1. Project Information
❑ CHECK IF HQW OR ORW
Facility Name
WWTP/WTP Class
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
Stream Class
7Q10s (cfs)
7Q10w (cfs)
30Q2 (cfs)
QA (cfs)
1Q10s (cfs)
Data Source(s)
❑ CHECK TO APPLY MODEL
Charlotte Delivery Facility
PC-1
NC0031038
009
0.09790
UT to Gum Branch
WS-Iv
0.00
0.00
0.00
0.00
0.0 6
Follow directions for data entry. In some cases a
comment menu list the available choices or a
dropdown menu will provide a list you may select
from. Error message occur if data entry does not
meet input criteria.
Table 2. Parameters of Concern
Par01
Par02
Par03
Par04
Par05
Par06
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Par15
Par16
Par17
Par18
Par19
Par20
Par21
Par22
Name
Type Chronic
Modifier Acute
PQL Units
Benzene
C
1.19
WS
pg/L
Benzene
C
51
HH
pg/L
Toluene
NC
11
FW
pg/L
Toluene
NC
57
WS
pg/L
Toluene
NC
520
HH
pg/L
Ethylbenzene
NC
68
WS
pg/L
Ethylbenzene
NC
130
HH
pg/L
Ethylbenzene
NC
97
FW
pg/L
Xylenes Mixture
NC
6200
WS
pg/L
Xylenes Mixture
NC
670
FW
pg/L
Xylenes Mixture
NC
57000
HH
pg/L
Napthalene
NC
400
WS
pg/L
Napthalene
NC
12
FW
pg/L
Napthalene
NC
950
HH
pg/L
MTBE (Methyl Tertiary -butyl Ether)
C
19
WS
pg/L
MTBE (Methyl Tertiary -butyl Ether)
C
34000
FW
pg/L
MTBE (Methyl Tertiary -butyl Ether)
C
1500
HH
pg/L
Phenolic Compounds
NC
300
FW
iIg/L
Phenol
NC
4000
WS
pg/L
Phenol
NC
300000
HH
pg/L
Turbidity
NC
50
FW
NTU
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall009_2021, input
7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
Charlotte Delivery Facility REASONABLE POTENTIAL ANALYSIS
Outfall 009
NC0031038
2016 Generic RPA (non -hardness dependent) - 95% Probability/95% Confidence Qw = 0.0979 MGD
Qw (MGD) = 0.09790
1Q10S (cfs) = 0.00
7Q10S (cfs) = 0.00
7Q1OW (cfs) = 0.00
30Q2 (cfs) = 0.00
Avg. Stream Flow, QA (cfs) = 0.00
Receiving Stream: UT to Gum Branch
MAXIMUM DATA POINTS = 58
WWTP/WTP Class: PC-1
IWC @ 1Q10S = ##########
IWC @ 7Q10S = ##########
IWC @ 7Q1OW = ##########
IWC @ 30Q2 = ##########
IWC @ QA = ##########
Stream Class: WS-IV
PARAMETER
TYPE
(1)
STANDARDS & CRITERIA (2)
J
a
en
E
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC WQS / Applied '/2 FAV /
Chronic Standard Acute
ri # Det. Max Pred Cw Allowable Cw
Benzene
C
1.19 WS
µg/L
49 0
NO DETECTS
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _ _ _
Chronic: 1.19
Max MDL = 1
_ _ _ _ _ _ _ _
No detects
Toluene
NC
57 WS
µg/L
49 0
NO DETECTS
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _ _
Chronic: 57.00
Max MDL = 1
_ _ _ _ _ _ _ _ _ _ _ _ _ _
No detects
Ethylbenzene
NC
68 WS
µg/L
49 0
NO DETECTS
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _ _
Chronic: 68.00
Max MDL = 1
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
No detects
Xylenes Mixture
NC
6200 WS
µg/L
49 0
NO DETECTS_
Acute: NO WQS
_ _ _ _ _ _ _ _ _
Chronic: 6,200.00
Max MDL = 3
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
No detects
MTBE (Methyl Tertiary -butyl Ether)
C
19 WS
µg/L
49 0
NO DETECTS
Acute: NO WQS
__ _ _ _ _ _ _ _ _ _ _
Chronic: 19.00
Max MDL = 5
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
No detects
Phenolic Compounds
NC
300 FW
µg/L
49 3
82.4
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _ _
Chronic: 300.00
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
No RP, Predicted Max < 50% of Allowbale Cw -
Monitoring required per current permitting strategy
Turbidity
NC
50 FW
NTU
50 48
185.3
Acute: NO WQS
_ _ _ _____
Chronic: 50.00
3 value(s) > Allowable Cw
P shown - apply Monthly Monitoring with Limit
Page 2 of 2
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall009_2021, rpa
7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Benzene
Date Data BDL=1/2DL Results
1 5/16/2017 < 0.5 0.25 Std Dev. 0.0828
2 6/19/2017 < 0.5 0.25 Mean 0.2806
3 7/10/2017 < 0.5 0.25 C.V. 0.2951
4 8/9/2017 < 0.5 0.25 n 49
5 9/6/2017 < 0.5 0.25
6 10/17/2017 < 0.5 0.25 Mult Factor = 1.0200
7 11/16/2017 < 0.5 0.25 Max. Value 0.5 pg/L
8 12/7/2017 < 0.5 0.25 Max. Pred Cw 0 DETECTS pg/L
9 1/22/2018 < 0.5 0.25
10 2/26/2018 < 0.5 0.25
11 3/12/2018 < 0.5 0.25
12 4/13/2018 < 0.5 0.25
13 5/3/2018 < 0.5 0.25
14 8/6/2018 < 0.5 0.25
15 9/11/2018 < 0.5 0.25
16 10/4/2018 < 0.5 0.25
17 11 /21 /2018 < 0.5 0.25
18 12/7/2018 < 0.5 0.25
19 1/18/2019 < 0.5 0.25
20 2/20/2019 < 0.5 0.25
21 3/26/2019 < 0.5 0.25
22 4/8/2019 < 0.5 0.25
23 5/7/2019 < 0.5 0.25
24 6/13/2019 < 0.5 0.25
25 7/22/2019 < 0.5 0.25
26 8/7/2019 < 0.5 0.25
27 10/15/2019 < 0.5 0.25
28 11 /21 /2019 < 0.5 0.25
29 12/23/2019 < 0.5 0.25
30 2/19/2020 < 0.5 0.25
31 4/14/2020 < 0.5 0.25
32 5/28/2020 < 0.5 0.25
33 6/12/2020 < 0.5 0.25
34 7/7/2020 < 0.5 0.25
35 8/12/2020 < 0.5 0.25
36 9/16/2020 < 0.5 0.25
37 10/15/2020 < 0.5 0.25
38 11/10/2020 < 0.5 0.25
39 12/2/2020 < 0.5 0.25
40 1/25/2021 < 0.5 0.25
41 2/4/2021 < 0.5 0.25
42 3/15/2021 < 0.5 0.25
43 4/6/2021 < 0.5 0.25
44 5/26/2021 < 1 0.5
45 6/25/2021 < 1 0.5
46 7/8/2021 < 1 0.5
47 8/17/2021 < 1 0.5
48 9/2/2021 < 1 0.5
49 10/11/2021 < 1 0.5
50
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
-1-
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11009_2021, data
7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Toluene
Date Data BDL=1/2DL Results
1 5/16/2017 < 1 0.5 Std Dev. 0.0606
2 6/19/2017 < 1 0.5 Mean 0.4847
3 7/10/2017 < 1 0.5 C.V. 0.1249
4 8/9/2017 < 1 0.5 n 49
5 9/6/2017 < 1 0.5
6 10/17/2017 < 1 0.5 Mult Factor = 1.0100
7 11/16/2017 < 1 0.5 Max. Value 0.5 pg/L
8 12/7/2017 < 1 0.5 Max. Pred Cw 0 DETECTS pg/L
9 1/22/2018 < 1 0.5
10 2/26/2018 < 1 0.5
11 3/12/2018 < 1 0.5
12 4/13/2018 < 1 0.5
13 5/3/2018 < 1 0.5
14 8/6/2018 < 1 0.5
15 9/11/2018 < 1 0.5
16 10/4/2018 < 1 0.5
17 11/21/2018 < 1 0.5
18 12/7/2018 < 1 0.5
19 1/18/2019 < 1 0.5
20 2/20/2019 < 1 0.5
21 3/26/2019 < 1 0.5
22 4/8/2019 < 1 0.5
23 5/7/2019 < 1 0.5
24 6/13/2019 < 1 0.5
25 7/22/2019 < 1 0.5
26 8/7/2019 < 1 0.5
27 10/15/2019 < 1 0.5
28 11/21/2019 < 1 0.5
29 12/23/2019 < 1 0.5
30 2/19/2020 < 1 0.5
31 4/14/2020 < 1 0.5
32 5/28/2020 < 1 0.5
33 6/12/2020 < 1 0.5
34 7/7/2020 < 1 0.5
35 8/12/2020 < 1 0.5
36 9/16/2020 < 1 0.5
37 10/15/2020 < 1 0.5
38 11/10/2020 < 1 0.5
39 12/2/2020 < 1 0.5
40 1/25/2021 < 1 0.5
41 2/4/2021 < 0.5 0.25
42 3/15/2021 < 0.5 0.25
43 4/6/2021 < 0.5 0.25
44 5/26/2021 < 1 0.5
45 6/25/2021 < 1 0.5
46 7/8/2021 < 1 0.5
47 8/17/2021 < 1 0.5
48 9/2/2021 < 1 0.5
49 10/11/2021 < 1 0.5
50
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
Ethylbenzene Values" then "i
. Maximum c
points = 5
Date Data BDL=1/2DL Results
1 5/16/2017 < 1 0.5 Std Dev. 0.0606
2 6/19/2017 < 1 0.5 Mean 0.4847
3 7/10/2017 < 1 0.5 C.V. 0.1249
4 8/9/2017 < 1 0.5 n 49
5 9/6/2017 < 1 0.5
6 10/17/2017 < 1 0.5 Mult Factor = 1.0100
7 11/16/2017 < 1 0.5 Max. Value 0.5
8 12/7/2017 < 1 0.5 Max. Pred Cw 0 DETECTS
9 1/22/2018 < 1 0.5
10 2/26/2018 < 1 0.5
11 3/12/2018 < 1 0.5
12 4/13/2018 < 1 0.5
13 5/3/2018 < 1 0.5
14 8/6/2018 < 1 0.5
15 9/11/2018 < 1 0.5
16 10/4/2018 < 1 0.5
17 11/21/2018 < 1 0.5
18 12/7/2018 < 1 0.5
19 1/18/2019 < 1 0.5
20 2/20/2019 < 1 0.5
21 3/26/2019 < 1 0.5
22 4/8/2019 < 1 0.5
23 5/7/2019 < 1 0.5
24 6/13/2019 < 1 0.5
25 7/22/2019 < 1 0.5
26 8/7/2019 < 1 0.5
27 10/15/2019 < 1 0.5
28 11/21/2019 < 1 0.5
29 12/23/2019 < 1 0.5
30 2/19/2020 < 1 0.5
31 4/14/2020 < 1 0.5
32 5/28/2020 < 1 0.5
33 6/12/2020 < 1 0.5
34 7/7/2020 < 1 0.5
35 8/12/2020 < 1 0.5
36 9/16/2020 < 1 0.5
37 10/15/2020 < 1 0.5
38 11/10/2020 < 1 0.5
39 12/2/2020 < 1 0.5
40 1/25/2021 < 1 0.5
41 2/4/2021 < 0.5 0.25
42 3/15/2021 < 0.5 0.25
43 4/6/2021 < 0.5 0.25
44 5/26/2021 < 1 0.5
45 6/25/2021 < 1 0.5
46 7/8/2021 < 1 0.5
47 8/17/2021 < 1 0.5
48 9/2/2021 < 1 0.5
49 10/11/2021 < 1 0.5
50
51
52
53
54
55
56
57
58
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11009_2021, data
- 2 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
COPY"
iata
18
Xylenes Mixture
pg/L
pg/L
Date Data BDL=1/2DL Results
1 5/16/2017 < 3 1.5 Std Dev. 0.3503
2 6/19/2017 < 3 1.5 Mean 1.3724
3 7/10/2017 < 3 1.5 C.V. 0.2552
4 8/9/2017 < 3 1.5 n 49
5 9/6/2017 < 3 1.5
6 10/17/2017 < 3 1.5 Mult Factor = 1.02
7 11/16/2017 < 3 1.5 Max. Value 1.5 pg/L
8 12/7/2017 < 3 1.5 Max. Pred Cw 0 DETECTS pg/L
9 1/22/2018 < 3 1.5
10 2/26/2018 < 3 1.5
11 3/12/2018 < 3 1.5
12 4/13/2018 < 3 1.5
13 5/3/2018 < 3 1.5
14 8/6/2018 < 3 1.5
15 9/11/2018 < 3 1.5
16 10/4/2018 < 3 1.5
17 11/21/2018 < 3 1.5
18 12/7/2018 < 3 1.5
19 1/18/2019 < 3 1.5
20 2/20/2019 < 3 1.5
21 3/26/2019 < 3 1.5
22 4/8/2019 < 3 1.5
23 5/7/2019 < 3 1.5
24 6/13/2019 < 3 1.5
25 7/22/2019 < 3 1.5
26 8/7/2019 < 3 1.5
27 10/15/2019 < 3 1.5
28 11/21/2019 < 3 1.5
29 12/23/2019 < 3 1.5
30 2/19/2020 < 3 1.5
31 4/14/2020 < 3 1.5
32 5/28/2020 < 3 1.5
33 6/12/2020 < 3 1.5
34 7/7/2020 < 3 1.5
35 8/12/2020 < 3 1.5
36 9/16/2020 < 3 1.5
37 10/15/2020 < 3 1.5
38 11/10/2020 < 3 1.5
39 12/2/2020 < 3 1.5
40 1/25/2021 < 3 1.5
41 2/4/2021 < 1.5 0.75
42 3/15/2021 < 0.5 0.25
43 4/6/2021 < 0.5 0.25
44 5/26/2021 < 1 0.5
45 6/25/2021 < 1 0.5
46 7/8/2021 < 1 0.5
47 8/17/2021 < 3 1.5
48 9/2/2021 < 3 1.5
49 10/11/2021 < 3 1.5
50
51
52
53
54
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
MTBE (Methyl Tertiary -butyl Ether)
Date Data BDL=1/2DL Results
1 5/16/2017 < 5 2.5 Std Dev.
2 6/19/2017 < 5 2.5 Mean
3 7/10/2017 < 5 2.5 C.V.
4 8/9/2017 < 5 2.5 n
5 9/6/2017 < 5 2.5
6 10/17/2017 < 5 2.5 Mult Factor =
7 11/16/2017 < 5 2.5 Max. Value
8 12/7/2017 < 5 2.5 Max. Pred Cw
9 1/22/2018 < 5 2.5
10 2/26/2018 < 5 2.5
11 3/12/2018 < 5 2.5
12 4/13/2018 < 5 2.5
13 5/3/2018 < 5 2.5
14 8/6/2018 < 5 2.5
15 9/11/2018 < 5 2.5
16 10/4/2018 < 5 2.5
17 11/21/2018 < 5 2.5
18 12/7/2018 < 5 2.5
19 1/18/2019 < 5 2.5
20 2/20/2019 < 5 2.5
21 3/26/2019 < 5 2.5
22 4/8/2019 < 5 2.5
23 5/7/2019 < 5 2.5
24 6/13/2019 < 5 2.5
25 7/22/2019 < 5 2.5
26 8/7/2019 < 5 2.5
27 10/15/2019 < 5 2.5
28 11/21/2019 < 5 2.5
29 12/23/2019 < 5 2.5
30 2/19/2020 < 5 2.5
31 4/14/2020 < 5 2.5
32 5/28/2020 < 5 2.5
33 6/12/2020 < 5 2.5
34 7/7/2020 < 5 2.5
35 8/12/2020 < 5 2.5
36 9/16/2020 < 5 2.5
37 10/15/2020 < 5 2.5
38 11/10/2020 < 5 2.5
39 12/2/2020 < 5 2.5
40 1/25/2021 < 5 2.5
41 2/4/2021 < 1 0.5
42 3/15/2021 < 1 0.5
43 4/6/2021 < 1 0.5
44 5/26/2021 < 1 0.5
45 6/25/2021 < 1 0.5
46 7/8/2021 < 1 0.5
47 8/17/2021 < 5 2.5
48 9/2/2021 < 5 2.5
49 10/11/2021 < 5 2.5
50
51
52
53
54
55
56
57
58
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall009_2021, data
- 3 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Values" then "COPY"
. Maximum data
points = 58
0.6624
2.2551
0.2937
49
1.0200
2.5 pg/L
0 DETECTS pg/L
Phenolic Compounds
Values" then "COPY"
. Maximum data
points = 58
Date Data BDL=1/2DL Results
1 5/16/2017 < 50 25 Std Dev. 10.2270
2 6/19/2017 < 50 25 Mean 24.6939
3 7/10/2017 50 50 C.V. 0.4142
4 8/9/2017 < 50 25 n 49
5 9/6/2017 < 50 25
6 10/17/2017 < 50 25 Melt Factor = 1.0300
7 11/16/2017 < 50 25 Max. Value 80.0 pg/L
8 12/7/2017 < 50 25 Max. Pred Cw 82.4 pg/L
9 1/22/2018 < 50 25
10 2/26/2018 < 50 25
11 3/12/2018 < 50 25
12 4/13/2018 < 50 25
13 5/3/2018 < 50 25
14 8/6/2018 20 20
15 9/11/2018 < 50 25
16 10/4/2018 < 50 25
17 11/21/2018 < 50 25
18 12/7/2018 < 50 25
19 1/18/2019 < 50 25
20 2/20/2019 < 50 25
21 3/26/2019 < 50 25
22 4/8/2019 < 50 25
23 5/7/2019 < 50 25
24 6/13/2019 < 50 25
25 7/22/2019 < 50 25
26 8/7/2019 < 50 25
27 10/15/2019 < 50 25
28 11/21/2019 < 50 25
29 12/23/2019 < 50 25
30 2/19/2020 < 50 25
31 4/14/2020 < 50 25
32 5/28/2020 < 50 25
33 6/12/2020 < 50 25
34 7/7/2020 < 50 25
35 8/12/2020 < 50 25
36 9/16/2020 80 80
37 10/15/2020 < 50 25
38 11/10/2020 < 50 25
39 12/2/2020 < 50 25
40 1/25/2021 < 50 25
41 2/4/2021 < 50 25
42 3/15/2021 < 50 25
43 4/6/2021 < 50 25
44 5/26/2021 < 20 10
45 6/25/2021 < 20 10
46 7/8/2021 < 20 10
47 8/17/2021 < 20 10
48 9/2/2021 < 20 10
49 10/11/2021 < 20 10
50
51
52
53
54
55
56
57
58
Turbidity
Date
Data BDL=1/2DL
4.9
8.9
3.8
6.8
14
2.7
6.9
4.2
4.1
9.5
9.6
1.9
4.2
1.4
3.2
2.7
23
8.8
34
33
2.4
4.7
10
17
1.3
10
11
60
85
170
23
13
30
27
1
2.1
2.4
17
2.2
17
10
22
2.4
3.8
6.1
1.5
4.4
0.5
7.7
0.5
5/16/2017 4.9
6/19/2017 8.9
7/10/2017 3.8
8/9/2017 6.8
9/6/2017 14
10/17/2017 2.7
11/16/2017 6.9
12/7/2017 4.2
1/22/2018 4.1
2/26/2018 9.5
3/12/2018 9.6
4/13/2018 1.9
5/3/2018 4.2
8/6/2018 1.4
9/11/2018 3.2
10/4/2018 2.7
11/21/2018 23
12/7/2018 8.8
1/18/2019 34
2/20/2019 33
3/26/2019 2.4
4/8/2019 4.7
5/7/2019 10
6/13/2019 17
7/22/2019 1.3
8/7/2019 10
10/15/2019 11
11/21/2019 60
12/23/2019 85
2/19/2020 170
2/28/2020 23
4/14/2020 13
5/28/2020 30
6/12/2020 27
7/7/2020 1
8/12/2020 2.1
9/16/2020 2.4
10/15/2020 17
11/10/2020 2.2
12/2/2020 17
1/25/2021 10
2/4/2021 22
3/15/2021 2.4
4/6/2021 3.8
5/26/2021 6.1
6/25/2021 1.5
7/8/2021 4.4
8/17/2021 < 1
9/2/2021 7.7
10/11/2021 < 1
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall009_2021, data
- 4 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Results
Std Dev. 27.1820
Mean 15.0520
C.V. 1.8059
n 50
Values" then "COPY"
. Maximum data
points = 58
Mult Factor = 1.0900
Max. Value 170.0 NTU
Max. Pred Cw 185.3 NTU
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11009_2021, data
- 5 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
2016 Generic RPA (non -hardness dependent) - 95% Probability/95% Confidence
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 1. Project Information
❑ CHECK IF HQW OR ORW
Facility Name
WWTP/WTP Class
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
Stream Class
7Q10s (cfs)
7Q10w (cfs)
30Q2 (cfs)
QA (cfs)
1Q10s (cfs)
Data Source(s)
❑ CHECK TO APPLY MODEL
Charlotte Delivery Facility
PC-1
NC0031038
010
0.28050
UT to Gum Branch
WS-Iv
0.00
0.00
0.00
0.00
0.0 6
Follow directions for data entry. In some cases a
comment menu list the available choices or a
dropdown menu will provide a list you may select
from. Error message occur if data entry does not
meet input criteria.
Table 2. Parameters of Concern
Par01
Par02
Par03
Par04
Par05
Par06
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Par15
Par16
Par17
Par18
Par19
Par20
Par21
Par22
Name
Type Chronic
Modifier Acute
PQL Units
Benzene
C
1.19
WS
pg/L
Benzene
C
51
HH
pg/L
Toluene
NC
11
FW
pg/L
Toluene
NC
57
WS
pg/L
Toluene
NC
520
HH
pg/L
Ethylbenzene
NC
68
WS
pg/L
Ethylbenzene
NC
130
HH
pg/L
Ethylbenzene
NC
97
FW
pg/L
Xylenes Mixture
NC
6200
WS
pg/L
Xylenes Mixture
NC
670
FW
pg/L
Xylenes Mixture
NC
57000
HH
pg/L
Napthalene
NC
400
WS
pg/L
Napthalene
NC
12
FW
pg/L
Napthalene
NC
950
HH
pg/L
MTBE (Methyl Tertiary -butyl Ether)
C
19
WS
1
pg/L
MTBE (Methyl Tertiary -butyl Ether)
C
34000
FW
pg/L
MTBE (Methyl Tertiary -butyl Ether)
C
1500
HH
pg/L
Phenolic Compounds
NC
300
FW
iIg/L
Phenol
NC
4000
WS
pg/L
Phenol
NC
300000
HH
pg/L
Turbidity
NC
50
FW
NTU
NC0031038_Bulk-StorageGENERIC2016RPA_Outfall010_2021, input
7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
charlotte Delivery Facility REASONABLE POTENTIAL ANALYSIS
Outfall 010
NC0031038
2016 Generic RPA (non -hardness dependent) - 95% Probability/95% Confidence Qw = 0.2805 MGD
Qw (MGD) = 0.28050
1Q10S (cfs) = 0.00
7Q10S (cfs) = 0.00
7Q1OW (cfs) = 0.00
30Q2 (cfs) = 0.00
Avg. Stream Flow, QA (cfs) = 0.00
Receiving Stream: UT to Gum Branch
MAXIMUM DATA POINTS = 58
WWTP/WTP Class: PC-1
IWC @ 1Q10S = ##########
IWC @ 7Q10S = ##########
IWC @ 7Q1OW = ##########
IWC @ 30Q2 = ##########
IWC @ QA = ##########
Stream Class: WS-IV
PARAMETER
TYPE
(1)
STANDARDS & CRITERIA (2)
J
a
en
z
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC WQS / Applied '/2 FAV /
Chronic Standard Acute
ri # Det. Max Pred Cw Allowable Cw
Benzene
C
1.19 WS
µg/L
54 1
4.4
Acute: NO WQS
-- _ _ ----_ _
Chronic: 1.19--------------------------------
1 value(s) > Allowable Cw
RP shown - apply Monthly Monitoring with Limit
Toluene
NC
57 WS
µg/L
54 2
14.7
Acute: NO WQS
_ _ _ _____ _ ___
Chronic: 57.00
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _____
No RP, Predicted Max < 50% of Allowbale Cw -
Monitoring required per current permitting strategy
Ethylbenzene
NC
68 WS
µg/L
54 2
1.9
Acute: NO WQS
_ ___________________________
Chronic: 68.00
No value > Allowable Cw
No RP, Predicted Max < 50% of Allowbale Cw -
Monitoring required per current permitting strategy
Xylenes Mixture
NC
6200 WS
µg/L
54 2
29.6
Acute: NO WQS
_ _ _ ___ _ _ ___
Chronic: 6,200.00
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _____
No RP,Predicted Max < 50% of Allowbale Cw -
Monitoring required per current permitting strategy
MTBE (Methyl Tertiary -butyl Ether)
C
19 WS
1
µg/L
54 3
2.5
Acute: NO WQS
__ _ ______ _ ___
Chronic_19.00
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _____
No RP, Predicted Max < 50% of Allowbale Cw -
Monitoring required per current permitting strategy
Phenolic Compounds
NC
300 FW
µg/L
54 5
81.6
Acute: NO WQS
_ _ _ _____ _ ___
Chronic: 300.00
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _____
No RP, Predicted Max < 50% of Allowbale Cw -
Monitoring required per current permitting strategy
Turbidity
NC
50 FW
NTU
54 50
41.2
Acute: NO WQS
_ _ _ _____ _ ___
Chronic: 50.00
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _ _
No RP, Predicted Max >_ 50% of Allowable Cw - apply
Quarterly Monitoring
0 0
N/A
Acute:
-- _ _-----------
Chronic:
-----------------------------
Page 2 of 2
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11010_2021, rpa
7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Benzene
Date Data BDL=1/2DL Results
1 5/16/2017 < 0.5 0.25 Std Dev. 0.5395
2 6/19/2017 < 0.5 0.25 Mean 0.3509
3 7/10/2017 < 0.5 0.25 C.V. 1.5374
4 8/9/2017 < 0.5 0.25 n 54
5 9/19/2017 < 0.5 0.25
6 10/17/2017 < 0.5 0.25 Mult Factor = 1.0400
7 11/16/2017 < 0.5 0.25 Max. Value 4.2 pg/L
8 12/7/2017 < 0.5 0.25 Max. Pred Cw 4.4 pg/L
9 1/22/2018 < 0.5 0.25
10 2/26/2018 < 0.5 0.25
11 3/12/2018 < 0.5 0.25
12 4/13/2018 < 0.5 0.25
13 5/3/2018 < 0.5 0.25
14 6/25/2018 < 0.5 0.25
15 7/27/2018 < 0.5 0.25
16 8/6/2018 < 0.5 0.25
17 9/11/2018 < 0.5 0.25
18 10/4/2018 < 0.5 0.25
19 11/21/2018 4.2 4.2
20 12/7/2018 < 0.5 0.25
21 1/18/2019 < 0.5 0.25
22 2/14/2019 < 0.5 0.25
23 3/26/2019 < 0.5 0.25
24 4/8/2019 < 0.5 0.25
25 5/7/2019 < 0.5 0.25
26 6/13/2019 < 0.5 0.25
27 7/22/2019 < 0.5 0.25
28 8/7/2019 < 0.5 0.25
29 9/24/2019 < 0.5 0.25
30 10/15/2019 < 0.5 0.25
31 11/21/2019 < 0.5 0.25
32 12/18/2019 < 0.5 0.25
33 1/28/2020 < 0.5 0.25
34 2/18/2020 < 0.5 0.25
35 3/18/2020 < 0.5 0.25
36 4/14/2020 < 0.5 0.25
37 5/26/2020 < 0.5 0.25
38 6/12/2020 < 0.5 0.25
39 7/7/2020 < 0.5 0.25
40 8/12/2020 < 0.5 0.25
41 9/16/2020 < 0.5 0.25
42 10/15/2020 < 0.5 0.25
43 11/10/2020 < 0.5 0.25
44 12/2/2020 < 0.5 0.25
45 1/25/2021 < 0.5 0.25
46 2/4/2021 < 0.5 0.25
47 3/15/2021 < 0.5 0.25
48 4/6/2021 < 0.5 0.25
49 5/26/2021 < 1 0.5
50 6/25/2021 < 1 0.5
51 7/8/2021 < 1 0.5
52 8/17/2021 < 1 0.5
53 9/17/2021 < 1 0.5
54 10/11/2021 < 1 0.5
55
56
57
58
Values" then "COPY"
. Maximum data
points = 58
-1-
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11010_2021, data
7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Toluene Values" then "COPY Ethylbenzene Values" then "I
. Maximum data . Maximum c
points = 58 points = 5
Date Data BDL=1/2DL Results Date Data BDL=1/2DL Results _
1 5/16/2017 < 1 0.5 Std Dev. 1.8570 1 5/16/2017 < 1 0.5 Std Dev. 0.2277
2 6/19/2017 < 1 0.5 Mean 0.7750 2 6/19/2017 < 1 0.5 Mean 0.5269
3 7/10/2017 < 1 0.5 C.V. 2.3961 3 7/10/2017 < 1 0.5 C.V. 0.4322
4 8/9/2017 < 1 0.5 n 54 4 8/9/2017 < 1 0.5 n 54
5 9/19/2017 < 1 0.5 5 9/19/2017 < 1 0.5
6 10/17/2017 < 1 0.5 Mult Factor = 1.0500 6 10/17/2017 < 1 0.5 Mult Factor = 1.0200
7 11/16/2017 < 1 0.5 Max. Value 14.0 pg/L 7 11/16/2017 < 1 0.5 Max. Value 1.9
8 12/7/2017 < 1 0.5 Max. Pred Cw 14.7 pg/L 8 12/7/2017 < 1 0.5 Max. Pred Cw 1.9
9 1/22/2018 < 1 0.5 9 1/22/2018 < 1 0.5
10 2/26/2018 < 1 0.5 10 2/26/2018 < 1 0.5
11 3/12/2018 < 1 0.5 11 3/12/2018 < 1 0.5
12 4/13/2018 < 1 0.5 12 4/13/2018 < 1 0.5
13 5/3/2018 < 1 0.5 13 5/3/2018 < 1 0.5
14 6/25/2018 < 1 0.5 14 6/25/2018 < 1 0.5
15 7/27/2018 < 1 0.5 15 7/27/2018 < 1 0.5
16 8/6/2018 < 1 0.5 16 8/6/2018 < 1 0.5
17 9/11/2018 < 1 0.5 17 9/11/2018 < 1 0.5
18 10/4/2018 < 1 0.5 18 10/4/2018 < 1 0.5
19 11/21/2018 14 14 19 11/21/2018 1.9 1.9
20 12/7/2018 < 1 0.5 20 12/7/2018 < 1 0.5
21 1/18/2019 2.6 2.6 21 1/18/2019 1.3 1.3
22 2/14/2019 < 1 0.5 22 2/14/2019 < 1 0.5
23 3/26/2019 < 1 0.5 23 3/26/2019 < 1 0.5
24 4/8/2019 < 1 0.5 24 4/8/2019 < 1 0.5
25 5/7/2019 < 1 0.5 25 5/7/2019 < 1 0.5
26 6/13/2019 < 1 0.5 26 6/13/2019 < 1 0.5
27 7/22/2019 < 1 0.5 27 7/22/2019 < 1 0.5
28 8/7/2019 < 1 0.5 28 8/7/2019 < 1 0.5
29 9/24/2019 < 1 0.5 29 9/24/2019 < 1 0.5
30 10/15/2019 < 1 0.5 30 10/15/2019 < 1 0.5
31 11/21/2019 < 1 0.5 31 11/21/2019 < 1 0.5
32 12/18/2019 < 1 0.5 32 12/18/2019 < 1 0.5
33 1/28/2020 < 1 0.5 33 1/28/2020 < 1 0.5
34 2/18/2020 < 1 0.5 34 2/18/2020 < 1 0.5
35 3/18/2020 < 1 0.5 35 3/18/2020 < 1 0.5
36 4/14/2020 < 1 0.5 36 4/14/2020 < 1 0.5
37 5/26/2020 < 1 0.5 37 5/26/2020 < 1 0.5
38 6/12/2020 < 1 0.5 38 6/12/2020 < 1 0.5
39 7/7/2020 < 1 0.5 39 7/7/2020 < 1 0.5
40 8/12/2020 < 1 0.5 40 8/12/2020 < 1 0.5
41 9/16/2020 < 1 0.5 41 9/16/2020 < 1 0.5
42 10/15/2020 < 1 0.5 42 10/15/2020 < 1 0.5
43 11/10/2020 < 1 0.5 43 11/10/2020 < 1 0.5
44 12/2/2020 < 1 0.5 44 12/2/2020 < 1 0.5
45 1/25/2021 < 1 0.5 45 1/25/2021 < 1 0.5
46 2/4/2021 < 0.5 0.25 46 2/4/2021 < 0.5 0.25
47 3/15/2021 < 0.5 0.25 47 3/15/2021 < 0.5 0.25
48 4/6/2021 < 0.5 0.25 48 4/6/2021 < 0.5 0.25
49 5/26/2021 < 1 0.5 49 5/26/2021 < 1 0.5
50 6/25/2021 < 1 0.5 50 6/25/2021 < 1 0.5
51 7/8/2021 < 1 0.5 51 7/8/2021 < 1 0.5
52 8/17/2021 < 1 0.5 52 8/17/2021 < 1 0.5
53 9/17/2021 < 1 0.5 53 9/17/2021 < 1 0.5
54 10/11/2021 < 1 0.5 54 10/11/2021 < 1 0.5
55 55
56 56
57 57
58 58
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11010_2021, data
- 2 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
COPY"
iata
18
Xylenes Mixture
pg/L
pg/L
Values" then "COPY"
. Maximum data
points = 58
MTBE (Methyl Tertiary -butyl Ether)
Date Data BDL=1/2DL Results Date Data BDL=1/2DL Results
1 5/16/2017 < 3 1.5 Std Dev. 3.7852 1 5/16/2017 < 5 2.5 Std Dev.
2 6/19/2017 < 3 1.5 Mean 2.0046 2 6/19/2017 < 5 2.5 Mean
3 7/10/2017 < 3 1.5 C.V. 1.8882 3 7/10/2017 < 5 2.5 C.V.
4 8/9/2017 < 3 1.5 n 54 4 8/9/2017 < 5 2.5 n
5 9/19/2017 < 3 1.5 5 9/19/2017 < 5 2.5
6 10/17/2017 < 3 1.5 Mult Factor = 1.05 6 10/17/2017 < 5 2.5 Mult Factor =
7 11/16/2017 < 3 1.5 Max. Value 28.2 pg/L 7 11/16/2017 < 5 2.5 Max. Value
8 12/7/2017 < 3 1.5 Max. Pred Cw 29.6 pg/L 8 12/7/2017 < 5 2.5 Max. Pred Cw
9 1/22/2018 < 3 1.5 9 1/22/2018 < 5 2.5
10 2/26/2018 < 3 1.5 10 2/26/2018 < 5 2.5
11 3/12/2018 < 3 1.5 11 3/12/2018 < 5 2.5
12 4/13/2018 < 3 1.5 12 4/13/2018 < 5 2.5
13 5/3/2018 < 3 1.5 13 5/3/2018 < 5 2.5
14 6/25/2018 < 3 1.5 14 6/25/2018 < 5 2.5
15 7/27/2018 < 3 1.5 15 7/27/2018 < 0.5 0.5
16 8/6/2018 < 3 1.5 16 8/6/2018 < 5 2.5
17 9/11/2018 < 3 1.5 17 9/11/2018 < 5 2.5
18 10/4/2018 < 3 1.5 18 10/4/2018 < 5 2.5
19 11/21/2018 28.2 28.2 19 11/21/2018 < 5 2.5
20 12/7/2018 < 3 1.5 20 12/7/2018 < 5 2.5
21 1/18/2019 8.8 8.8 21 1/18/2019 < 5 2.5
22 2/14/2019 < 3 1.5 22 2/14/2019 < 5 2.5
23 3/26/2019 < 3 1.5 23 3/26/2019 < 5 2.5
24 4/8/2019 < 3 1.5 24 4/8/2019 < 5 2.5
25 5/7/2019 < 3 1.5 25 5/7/2019 < 5 2.5
26 6/13/2019 < 3 1.5 26 6/13/2019 < 5 2.5
27 7/22/2019 < 3 1.5 27 7/22/2019 < 5 2.5
28 8/7/2019 < 3 1.5 28 8/7/2019 < 5 2.5
29 9/24/2019 < 3 1.5 29 9/24/2019 < 5 2.5
30 10/15/2019 < 3 1.5 30 10/15/2019 < 5 2.5
31 11/21/2019 < 3 1.5 31 11/21/2019 < 5 2.5
32 12/18/2019 < 3 1.5 32 12/18/2019 < 5 2.5
33 1/28/2020 < 2 1 33 1/28/2020 < 5 2.5
34 2/18/2020 < 3 1.5 34 2/18/2020 < 5 2.5
35 3/18/2020 < 3 1.5 35 3/18/2020 < 5 2.5
36 4/14/2020 < 3 1.5 36 4/14/2020 < 5 2.5
37 5/26/2020 < 3 1.5 37 5/26/2020 < 5 2.5
38 6/12/2020 < 3 1.5 38 6/12/2020 < 5 2.5
39 7/7/2020 < 3 1.5 39 7/7/2020 < 5 2.5
40 8/12/2020 < 3 1.5 40 8/12/2020 < 5 2.5
41 9/16/2020 < 3 1.5 41 9/16/2020 < 5 2.5
42 10/15/2020 < 3 1.5 42 10/15/2020 < 5 2.5
43 11/10/2020 < 3 1.5 43 11/10/2020 < 5 2.5
44 12/2/2020 < 3 1.5 44 12/2/2020 < 5 2.5
45 1/25/2021 < 3 1.5 45 1/25/2021 < 5 2.5
46 2/4/2021 < 1.5 0.75 46 2/4/2021 1.5 1.5
47 3/15/2021 < 0.5 0.25 47 3/15/2021 1 1
48 4/6/2021 < 0.5 0.25 48 4/6/2021 1 1
49 5/26/2021 < 1 0.5 49 5/26/2021 < 1 0.5
50 6/25/2021 < 1 0.5 50 6/25/2021 < 1 0.5
51 7/8/2021 < 1 0.5 51 7/8/2021 < 1 0.5
52 8/17/2021 < 3 1.5 52 8/17/2021 < 5 2.5
53 9/17/2021 < 3 1.5 53 9/17/2021 < 5 2.5
54 10/11/2021 < 3 1.5 54 10/11/2021 < 5 2.5
55 55
56 56
57 57
58 58
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11010_2021, data
- 3 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Values" then "COPY"
. Maximum data
points = 58
0.5961
2.2778
0.2617
54
1.0100
2.5 pg/L
2.5 pg/L
Phenolic Compounds
Date
Data BDL=1/2DL Results
25 Std Dev. 14.9897
25 Mean 27.6296
25 C.V. 0.5425
25 n 54
25
25 Mult Factor = 1.0200
25 Max. Value 80.0 pg/L
25 Max. Pred Cw 81.6 pg/L
25
25
25
25
25
25
25
70
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
62
25
25
25
25
25
25
73
25
80
72
25
25
25
25
25
25
10
10
10
10
10
10
5/16/2017 < 50
6/19/2017 < 50
7/10/2017 < 50
8/9/2017 < 50
9/19/2017 < 50
10/17/2017 < 50
11/16/2017 < 50
12/7/2017 < 50
1/22/2018 < 50
2/26/2018 < 50
3/12/2018 < 50
4/13/2018 < 50
5/3/2018 < 50
6/25/2018 < 50
7/27/2018 < 50
8/6/2018 70
9/11/2018 < 50
10/4/2018 < 50
11/21/2018 < 50
12/7/2018 < 50
1/18/2019 < 50
2/14/2019 < 50
3/26/2019 < 50
4/8/2019 < 50
5/7/2019 < 50
6/13/2019 < 50
7/22/2019 < 50
8/7/2019 < 50
9/24/2019 < 50
10/15/2019 < 50
11/21/2019 < 50
12/18/2019 62
1/28/2020 < 50
2/18/2020 < 50
3/18/2020 < 50
4/14/2020 < 50
5/26/2020 < 50
6/12/2020 < 50
7/7/2020 73
8/12/2020 < 50
9/16/2020 80
10/15/2020 72
11/10/2020 < 50
12/2/2020 < 50
1/25/2021 < 50
2/4/2021 < 50
3/15/2021 < 50
4/6/2021 < 50
5/26/2021 < 20
6/25/2021 < 20
7/8/2021 < 20
8/17/2021 < 20
9/17/2021 < 20
10/11/2021 < 20
Values" then "COPY"
. Maximum data
points = 58
Turbidity
Date
Data BDL=1/2DL
3.8
13
9.3
6.8
7.8
5.8
2.3
8.1
5.4
11
26
1.7
1.6
8.7
1.8
1.5
15
1.2
4.4
4.8
18
11
12
6.5
12
20
7.7
16
0.5
6
21
40
20
27
9.4
16
7.5
4.4
2
8.5
1.1
4.4
1.3
12
6
9.5
3.3
1.9
0.5
1.8
18.2
7.6
0.5
0.5
5/16/2017 3.8
6/19/2017 13
7/10/2017 9.3
8/9/2017 6.8
9/19/2017 7.8
10/17/2017 5.8
11/16/2017 2.3
12/7/2017 8.1
1/22/2018 5.4
2/26/2018 11
3/12/2018 26
4/13/2018 1.7
5/3/2018 1.6
6/25/2018 8.7
7/27/2018 1.8
8/6/2018 1.5
9/11/2018 15
10/4/2018 1.2
11/21/2018 4.4
12/7/2018 4.8
1/18/2019 18
2/14/2019 11
3/26/2019 12
4/8/2019 6.5
5/7/2019 12
6/13/2019 20
7/22/2019 7.7
8/7/2019 16
9/24/2019 < 1
10/15/2019 6
11/21/2019 21
12/18/2019 40
1/28/2020 20
2/18/2020 27
3/18/2020 9.4
4/14/2020 16
5/26/2020 7.5
6/12/2020 4.4
7/7/2020 2
8/12/2020 8.5
9/16/2020 1.1
10/15/2020 4.4
11/10/2020 1.3
12/2/2020 12
1/25/2021 6
2/4/2021 9.5
3/15/2021 3.3
4/6/2021 1.9
5/26/2021 < 1
6/25/2021 1.8
7/8/2021 18.2
8/17/2021 7.6
9/17/2021 < 1
10/11/2021 < 1
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11010_2021, data
- 4 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
REASONABLE POTENTIAL ANALYSIS
Results
Std Dev. 8.0021
Mean 8.7796
C.V. 0.9114
n 54
Values" then "COPY"
. Maximum data
points = 58
Mult Factor = 1.0300
Max. Value 40.0 NTU
Max. Pred Cw 41.2 NTU
NC0031038_Bulk-StorageGENERIC2016RPA_Outfa11010_2021, data
- 5 - 7/12/2022

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
From: Corporon, Joe
To: Carpenter, Sydney
Subject: RE: Peer Review for Charlotte Delivery Facility (NC0031038)
Date: Tuesday, May 3, 2022 4:33:13 PM
Attachments: image001.pnq
image002.pnq
Sydney - Just re -checked BIMS. I agree with Bradley - 00552 is correct.
-jrc
Respectfully,
Joe R. Corporon, P. G.
NCDEQ/DWR/NPDES Permitting
From: Carpenter, Sydney <[e-mail]>
Sent: Tuesday, May 03, 2022 4:23 PM
To: Corporon, Joe <[e-mail]>
Cc: Bennett, Bradley <[e-mail]>
Subject: RE: Peer Review for Charlotte Delivery Facility (NC0031038)
Hey Joe,
I'm not sure if you've had a chance to review this draft permit yet, but Bradley and I were just
discussing which parameter code is the correct one for Oil & Grease [EPA Method 1664 SGT-HEM].
I've been using code [00556], but Bradley pointed out that we should be using code [00552]. It looks
like a few oil terminals have been issued in the past few years with 00552. Do you know which
parameter code is the correct one to use?
Thanks,
Sydney Carpenter (she/her)
Environmental Specialist I
Compliance and Expedited Permitting Branch
Division of Water Resources
NC Department of Environmental Quality
Office: 919-707-3712
sydney.carpenter acncdenr.gov
1617 Mail Service Center
Raleigh, NC 27699-1617
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
From: Thomas, Zachary T
To: Carpenter, Sydney
Subject: RE: DRAFT Permit Renewal for Charlotte Delivery Facility (NC0031038)
Date: Thursday, May 26, 2022 4:00:48 PM
Attachments: imaoe002.pnq
image003.pnq
Hi Sydney,
Everything looks good for Tox!
Thank you,
Zach Thomas
Environmental Specialist II
Aquatic Toxicology Branch, Compliance and Enforcement Officer
NCDEQ— Division of Water Resources — Water Sciences Section
Based on the current guidance to minimize the spread of COVID-19, the Department of
Environmental Quality has adjusted operations to protect the health and safety of the staff and
public. Many employees are working remotely or are on staggered shifts. To accommodate these
staffing changes, all DEQ office locations are limiting public access to appointments only. Please
check with the appropriate staff before visiting our offices, as we may be able to handle your
requests by phone or email. We appreciate your patience as we continue to serve the public during
this challenging time.
919.743.8439 Office
919.743.8517 Fax
zachary.thomasPncdenr.gov
1621 Mail Service Center
Raleigh, NC 27699-1621
Submit ATForms electronically to: [e-mail]
Email correspondence to and from this address is subject to the North Carolina Public Records Law
and may be disclosed to third parties.
From: Carpenter, Sydney
Sent: Wednesday, May 4, 2022 3:56 PM
To: Kinney, Maureen <[e-mail]>; Basinger, Corey
<[e-mail]>; Thomas, Zachary T <[e-mail]>; Cook, Clinton
<[e-mail]>
Cc: Moore, Cindy <[e-mail]>

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
Subject: DRAFT Permit Renewal for Charlotte Delivery Facility (NC0031038)
Hello,
The draft permit renewal for Charlotte Delivery Facility (NC0031038) is ready for review and
comment. This is a PC-1 facility in Mecklenburg County.
I'm hoping to submit the draft for Public Notice on May 17, 2022. If you would like to
provide comments before public notice, please send them to me by May 16th. Otherwise,
please send any comments to me by June 16, 2022.
Link to renewal application: https://edocs.deq.nc.gov/WaterResources/DocView.aspx?
id=1060571 &dbid=0&repo=WaterResources
Mr. Cook,
We used to send a separate approval memo for the review by Public Water Supply. Since
we're moving to paperless documents, your email comments will take the place of the
old DEH/PWS memo. Please provide your comments by June 16, 2022. Thanks for your help
with this.
Thanks,
Sydney Carpenter (she/her)
Environmental Specialist 1
Compliance and Expedited Permitting Branch
Division of Water Resources
NC Department of Environmental Quality
Office: 919-707-3712
1617 Mail Service Center
Raleigh, NC 27699-1617
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
From: Whitner, Raymond A
To: Carpenter, Sydney
Cc: Cook, Clinton
Subject: DRAFT Permit Renewal for Charlotte Delivery Facility (NC0031038)
Date: Thursday, June 2, 2022 3:28:48 PM
Attachments: image001.png
Good afternoon Sydney,
I appreciate the opportunity to review the subject draft permit.
I have no appreciable expertise in implementation of the Clean Water Act
requirements and have minimal understanding of the information provided. As
a result, I have no basis for opposing the permit. Please also note that the City
of Belmont raw water intake for a public water system is downstream of the
Colonial Pipeline Pond discharge.
If you have any questions or need any additional information, please let me
know.
Sincerely,
Ray Whitner
ITA
O �
9.p.fV C:W UCM r
u.�v..rk a -M.+w uU.e+r
Raymond A. Whitner, III
Assistant Regional Engineer
Division of Water Resources - Public Water Supply Section
North Carolina Department of Environmental Quality
704 235 2132 otlice
900 4-47 0215 cell
704 663 6040 fax
r avmon d .whit n er@ ncde nr.00v
Mooresville) Regional Office
610 East Center Avenue, Suite 301
Mooresville, NC 20115
Email correspondence to and from this address is subject to the North Carolina Public Records Law and
may be disclosed to third parties.

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
h,MCCLATCHY
Beaufort Gazette
Belleville News -Democrat
Bellingham Herald
Bradenton Herald
Centre Daily Times
Charlotte Observer
Columbus Ledger -Enquirer
Fresno Bee
The Herald - Pock Hill
Herald Sun - Durham
Idaho Statesman
Island Packet
Kansas City Star
Lexington Herald -Leader
Merced Sun -Star
Miami Herald
el Nuevo Herald - Miami
Modesto Bee
Raleigh News & Observer
The Olympian
Sacramento Bee
Fort Worth Star -Telegram
The State - Columbia
Sun Herald - Biloxi
Sun New - Myrtle Beach
The News Tnbune Tacoma
The Telegraph - Macon
San Luis Obispo Tribune
Tri-City Herald
Wichita Eagle
AFFIDAVIT OF PUBLICATION
Account #
Order Number
Identlfkatioon
Order PO
Amount
Cols
Depth
28386
265049
Print Legal Ad - IPL0074000
$57928
2
25 L
Attention: Wren Thedford
NCDENR/DWQ/POINT SOURCE
1617 MAIL SERVICE CENTER
RALEIGH, NC 276991677
Public Notice
North Carolina Environmental Management Commission/NPDES Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
Notice of Intent to Issue a NPDES Wastewater Permit N00031038 Colonial Pipe-
line Company
The North Carolina Environmental Management Commission proposes to issue
a NPDES wastewater discharge permit to the person(s) listed below. Written
comments regarding the proposed permit will be accepted until 30 days atter the
publish date of this notice. The Director of the NC Division of Water Resources
(DWR) may hold a public hearing should there be a significant degree of public
interest. Please mail comments and/or information requests to DWR at the above
address. Interested persons may visit the DWR at 512 N. Salisbury Street, Ra-
leigh, NC 27604 to review information on file. Additional information on NPDES
permits and this notice may be found on our website: httpl/deq.nc.gov/about/
d iv isions/wale r-resources/wate r-resou rces-pe rm its/wastewater-branch/ np-
des-wastewater/public-notices or by calling [phone]. Colonial Pipeline
Company, Kenstead Circle, Paw Creek, Mecklenburg County, applied to renew
NPDES permit for the Charlotte Delivery Facility riC for discharge of
treated wastewater/stomnvater to Gum Branch, Catawba River Basin. Currently
Turbidity and Benzene are water-gualtty limited. This discharge may affect future
wasteload allocations in this portion of Gum Branch.
IFL0074000
May 20 2022
North Carol'na } ss
Mecklenburg County }
Before the undersigned, a Notary Public of said
County and State, duly authorized to administer
oaths affirmations, etc, personally appeared,
being duly sworn or affirmed according to law,
doth depose and say that he/she is a
representative of The Charlotte Observer
Publishing Company, a corporation organized and
doing business under the laws of the State of
Delaware, and publishing a newspaper known as
The Charlotte Observer in the city of Charlotte,
County of Mecklenburg, and State of North
Carolina and that as such he/she is familiar with
the books, records, files, and business of said
Corporation and by reference to the files of said
publication, the attached advertisement was
inserted. The following is correctly copied from
the books and files of the aforesaid Corporation
and Publication.
No. of Insertions: 1
Beginning Issue of: 05/20/2022
Ending Issue of: 05/20/2022
In Testimony Whereof I have hereunto set my hand
and affixed my seal on the 16th day of June,2022
Notary Public in and for the state of Texas, residing in
Dallas County
SWAM SCOTT BEARD
fly Notary ID $ 131788951
I Ellplrer Odobei 23, 2022
Extra charge for lost or duplicate affidavits.
Legal document please do not destroy!

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
From: Carpenter, Sydney
To: Hughes, Maribeth
Subject: RE: [External] Drfat NPDES permit NC0031038
Date: Tuesday, June 28, 2022 5:18:00 PM
Hi Maribeth,
I apologize for the delay in getting back to you. I was out sick for a week and have been catching up
on emails ever since. I'm happy to answer your questions! Please find my responses below in blue.
1. The EPA 625 testing required under Footnote 10 on Page 4, is this a new standard condition
for all permitted facilities, or is something unique to Colonial? If unique to Colonial, may I ask
why? If we were to get a detectable level of an analyte not normally monitored by the
permit, what is the reporting procedure?
We have been updating our guidance and permit language for all petroleum bulk -storage
facilities as they come up for renewal, which includes this facility. The new footnote in
the draft permit for the Charlotte Delivery Facility was added to help clarify the
monitoring requirements for EPA Method 625.1, and to include additional details for how
permittees should be reporting any parameters that are detected. Previous versions of
the permit for the Charlotte Delivery Facility required EPA Method 625.1 pollutant scans
to be performed on a semi-annual basis, and it was kept in the permit for this renewal
because a parameter of concern was detected during one of the scans. This is in line with
our current permitting strategy. We have recently approved the language for a new
condition to be added in bulk -storage permits which will provide all the necessary
information for EPA Methods 624.1 and 625.1 for monitoring and reporting. The final
version of the permit for Charlotte Terminal may include this condition.
2. Foot note 4 on Page 3, if we test the receiving stream and the turbidity is higher than the
permit limit of 50 NTU, can we consider our Turbidity permit limit to be the stream
concentration? We have no date on the receiving stream turbidity at this time. Does the
Department suggest that we gather some?
This permit does not require the facility to gather turbidity data on the receiving stream.
If the discharge effluent was expected to exceed the 50 NTU Turbidity permit limit, then
the facility could sample upstream and downstream to show compliance. The samples
would need to demonstrate that the receiving stream has natural, existing turbidity levels
greater than 50 NTUs upstream of the discharge, and that the turbidity levels
downstream of the discharge are at or lower than the upstream value. This would show
that the effluent has not increased the natural, existing turbidity levels of the stream,
which would meet the requirements of the permit and the rule the footnote was based
[15A NCAC 2B 0.211 (21)]. All samples (upstream, downstream, and effluent) would need
to be taken within the same 24-hour period. This can be a bit confusing, so please let me
know if you still have questions about turbidity!
3. Footnote 9 on Page 4, May I ask the reasoning behind this? Have there been historic

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
detections of MTBE within Outfall 10? I have only been with the company for 8 month and I
do not recall any MTBE detections within that time frame.
We look at DMR data from the past permit cycle (4 to 4.5 years) when a permit is up for
renewal and MTBE was detected three times from Outfall 010 (on 2/4/21, 3/15/21, and
4/6/21). It was not detected at any of the other outfalls. Following our current permitting
strategy for petroleum bulk -storage facilities, if MTBE is detected, we require monthly
monitoring (the previous permit issued in 2016 already required this for all outfalls) and
an action plan to be submitted within 12 months.
I hope this helps answer your questions on the draft permit, but please let me know if anything still
needs further clarification!
Thanks,
Sydney Carpenter
Environmental Specialist I
Compliance and Expedited Permitting Unit
Division of Water Resources
N.C. Department of Environmental Quality
Office: 919-707-3712
[e-mail]
1617 Mail Service Center
Raleigh, NC 27699-1617
c.,—_,t,-77TIE
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
From: Hughes, Maribeth <[e-mail]>
Sent: Tuesday, June 14, 2022 3:05 PM
To: Carpenter, Sydney <[e-mail]>
Subject: RE: [External] Drfat NPDES permit NC0031038
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an
attachment to Report Spam.
Sydney—
' have a few comments/questions:
1. The EPA 625 testing required under Footnote 10 on Page 4, is this a new standard condition

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
for all permitted facilities, or is something unique to Colonial? If unique to Colonial, may I ask
why? If we were to get a detectable level of an analyte not normally monitored by the
permit, what is the reporting procedure?
2. Foot note 4 on Page 3, if we test the receiving stream and the turbidity is higher than the
permit limit of 50 NTU, can we consider our Turbidity permit limit to be the stream
concentration? We have no date on the receiving stream turbidity at this time. Does the
Department suggest that we gather some?
3. Footnote 9 on Page 4, May I ask the reasoning behind this? Have there been historic
detections of MTBE within Outfall 10? I have only been with the company for 8 month and I
do not recall any MTBE detections within that time frame.
I look forward to hearing from you.
Maribeth Hughes, PE, CSP
Environmental Specialist
Colonial Pipeline Company
m. 7 5 93� mhughesecoloioe.com
From: Carpenter, Sydney <[e-mail]>
Sent: Tuesday, May 24, 2022 3:12 PM
To: Hughes, Maribeth <[e-mail]>
Subject: [External Message] RE: [External] Drfat NPDES permit NC0031038
WARNING: This email originated outside of Colonial Pipeline.
DO NOT CLICK links or attachments unless you recognize the sender and know the content is safe.
Hi Maribeth,
I'm sorry to hear it was missing! I've attached a copy for you in this email. Please let me know if you
have any problems viewing the document or have any questions regarding the draft permit.
Thanks,
Sydney Carpenter
Environmental Specialist I
Compliance and Expedited Permitting Unit
Division of Water Resources
N.C. Department of Environmental Quality
Office: 919-707-3712
[e-mail]
1617 Mail Service Center

DocuSign Envelope ID: AD27AF6A-62D6-472C-B4A1-45E88369DE82
Raleigh, NC 27699-1617
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
From: Hughes, Maribeth <[e-mail]>
Sent: Tuesday, May 24, 2022 12:45 PM
To: Carpenter, Sydney <[e-mail]>
Subject: [External] Drfat NPDES permit NC0031038
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an
attachment to Report Spam.
Hi Sydney —
I received the letter regarding the issuance of the subject draft permit. The mailing only contained
the permit cover letter. Would it be possible to get a copy of the draft permit from you?
Maribeth Hughes, PE, CSP
Environmental Specialist
Colonial Pipeline Company
m.7 5 9mhuahes at7coloioe.com
Colonial Pipeline Notice - This e-mail message (including any attachment) contains information that may
be confidential, be protected by attorney -client or other privilege, or constitute non-public information. If
you are not the intended recipient, please notify the sender by electronic mail or telephone and delete the
original message without making any copies. Use, dissemination, distribution, or reproduction of this
message by unintended recipients is not authorized and may be unlawful.
Colonial Pipeline Notice - This e-mail message (including any attachment) contains information that may
be confidential, be protected by attorney -client or other privilege, or constitute non-public information. If
you are not the intended recipient, please notify the sender by electronic mail or telephone and delete the
original message without making any copies. Use, dissemination, distribution, or reproduction of this
message by unintended recipients is not authorized and may be unlawful.