NC0086517_Permit Issuance_20150727

F FA
WA
ikA
rCiDFEND
North Carolina Department of Environment and Natural Resources
Pat McCrory
Governor
Mr. David L. Edwards
Cousins Properties, Inc.
800 West Trade St, Suite 100
Charlotte, NC 28202
Dear Mr. Edwards:
Donald R. van der Vaart
Secretary
July 27, 2015
Subject: Issuance of NPDES Permit NCO086517
Gateway Village, LLC
Gateway Village Groundwater Remediation
800 block of West Trade Street, Charlotte 28202
Mecklenburg County
The Division of Water Resources (the Division) hereby issues the attached NPDES permit for the subject
facility. This permit is issued pursuant to the requirements of North Carolina General Statute 143-215.1
and the Memorandum of Agreement between North Carolina and the U.S. Environmental Protection
Agency dated October 15, 2007, or as subsequently amended.
The Division understands that you have made no significant changes to your facility the last permit
renewal. We have made the following updates to your previous permit:
• added updates to facility map, outfall locations and parameter codes
• . updated Tetrachloroethene (PCE) limit to 3.3 µg/L in accordance with current human health standards
• updated 1, 2-cis-dichloroethene limit to 720 µg/L in accordance with current human health standards
• for Oil & Grease, please note that [00556] remains the same for submitting DMWeDMR, but use test
EPA method 1664 (SGT-HEM) with results in mg/L.
Proposed federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and
specify that, if a state does not establish a system to receive such submittals, then permittees must submit
DMRs electronically to the Environmental Protection Agency (EPA). The Division anticipates that these
regulations will be adopted and is beginning implementation.
The requirement to begin reporting discharge monitoring data electronically using the NC DWR's
Electronic Discharge Monitoring Report (eDMR) internet application has been added to your NPDES
permit. [See Special Condition A. (3.)] For information on eDMR, registering for eDMR and obtaining
an eDMR user account, please visit the following web page:
http://portal.ncdenr.org/web/wq/admin/boglipu/edmr.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St Raleigh, North Carolina 27604
Phone: [phone] Fax: [phone]Customer Service:1-877-623-6748
Internet:: www.ncwater om
An Equal opportunityWfrirmative Action Employer

Mr. Edwards
July 27, 2015
Page 2 of 2
For information on EPA's proposed NPDES Electronic Reporting Rule, please visit the following web
site:
http://www2.epa. gov/compliance/proposed-npdes-electronic-reporting-rule
If any parts, measurement frequencies, or sampling requirements contained in this permit are
unacceptable, you have the right to an adjudicatory hearing, upon written request submitted within thirty
(30) days after receiving this letter. Your request must take the form of a written petition conforming to
Chapter 150B of North Carolina General Statutes, and you must file it with the Office of Administrative
Hearings, 6714 Mail Service Center, Raleigh, North Carolina 27699-6714. Unless such a demand is
made, this permit shall remain final and binding.
Please note that this permit is not transferable except after notice to the Division. The Division may
require modification or revocation and reissuance of the permit. This permit does not affect the legal
requirements to obtain other permits which may be required by the Division of Water Resources or any.
other Federal, State, or Local governmental permits that may be required.
If you have questions, or if we can be of further service, please contact Derek Denard at
[[e-mail]] or call [phone].
espec ly,
Jay Zimmerman, Acting '
Division of Water Resources, NCDENR
Enclosure: NPDES Permit NCO086517 (Issuance Final)
he: Central Files
NPDES Program Files
MRO Files/ Attn: Michael Parker
ec: Richard Farmer [[e-mail]]
Aquatic Toxicology Unit/ Susan Meadows [[e-mail]]
[e-mail]
[e-mail]

Permit NCO086517
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
(NPDES)
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended,
Gateway Village, LLC
is hereby authorized to discharge wastewater from a facility located at the
Gateway Village groundwater remediation site
800 block of West Trade Street, Charlotte 28202
Mecklenburg County
to receiving waters designated as an unnamed tributary to Unnamed Tributary to Irwin Creek in the
Catawba River Basin in accordance with effluent limitations, monitoring requirements, and other
conditions set forth in Parts I, II, III, and IV hereof
The permit shall become effective September 1, 2015.
This permit and the authorization to discharge shall expire at midnight on June 30, 2020.
Signed this day July 27, 2015.
S,,J5yZimmerman, Director 16-Kision of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 6

Permit NCO086517
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby
revoked, and as of this issuance, any previously issued permit bearing this number is no longer effective.
Therefore, the exclusive authority to operate and discharge from this facility arises under the permit.
conditions, requirements, terms, and provisions described herein.
Gateway Village, LLC
is hereby authorized to:
1. continue operating a 0.05 MGD groundwater remediation system that includes the following
components;
• 1200 gallon collection tank with pump
• two (2) bag filters
• two (2) 1000 lb activated carbon canisters (in series)
• effluent meter with recorder
located at the Gateway Village remediation site, 800 block of west Trade Street, Charlotte, in
Mecklenburg County; and
2. discharge from said treatment works via Outfall 001 at a location specified on the attached map, into
an unnamed tributary to Irwin Creek [Stream Segment 11-137-1], currently a Class C waterbody
within Subbasin 03-08-34 [HUC: 03050103] of the Catawba River Basin
Page 2 of 6

Permit NCO086517
PART I
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
During the period beginning on the effective date of this permit and lasting until expiration, the Permittee is
authorized to discharge treated groundwater via Outfall 001. Such discharges shall be limited, monitored and
reported' by the Permittee as specified below:
'
EFFLUENT, CHARA►CTERISTICS:.
LIMITS
_ .
17
MONITORING REQUIREMENTS i
[Parameter Code] :y
1V�onthly,
Daily
Measurement
Fre uenc
Sample Type
Sample
Location
Average
Maximum
9 Y
Flow 2 (MGD)
50050
0.05 MGD
Weekly
Instantaneous 2
Effluent
TotalSuspended Solids
(T ) (mg/L)
C0530
30.0 mg/L
45.0 mg/L
Monthly
Grab
Effluent
pH (su)
00400
Not < 6.0 or > 9.0 standard units
Monthly
Grab
Effluent
Tetrachloroethene (PCE)3,4
.
( gam)
78389
3.3 µg/L
3.3 µg/L
Monthly
Grab
Effluent
1,2-cis-dichloroethene 324
(
81574
720 µg/L
720 µg/L
Monthly
Grab
Effluent
Chloroform 314 (µg/L)
32106
Quarterly
Grab
Effluent
1,2-dichloroethane 324
(µ )
32103
Quarterly
Grab
Effluent
Trichloroethene (TCE) 334
78391
Quarterly
Grab
Effluent
Oil and Grease (mg/L)
PA Method 1664 SGT-HE
00556
Quarterly
Grab
Effluent
Total Copper 4 (µg/L)
01042
Quarterly
Grab
Effluent
Total Lead 4 (µg/L)
01051
Quarterly
Grab
Effluent
Total Zinc 4 (µg/L)
01092
Quarterly
Grab
Effluent
Total Iron 4 (µg/L)
01045
Quarterly
Grab
Effluent
Total Manganese 4 (µg/L)
01055
Quarterly
Grab
Effluent
hronic Toxicity 5
LC
TGP3B/
THP3B
Quarterly
Grab
Effluent
Footnotes:
1. No later than 270 days from the effective date of this pen -nit, the permittee shall begin submitting discharge
monitoring reports electronically using the Division's eDMR application system [see A. (3.)]
2. Flow must be determined by an effluent meter.
3. A minimum detection limit of 1.0 µg/1 is required.
4. This sample to be collected concurrently with quarterly Acute Toxicity.
5. Chronic Toxicity (Ceriodaphnia) limit at 90% with testing in January, April, July and October [see A. (2)].
Conditions:
• There shall be no discharge of floating solids or foam.
• Discharge shall show no evidence as a source for oily film or sheen on the receiving stream.
Page 3 of 6

Permit NCO086517
A. (2.) CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY)
[I 5A NCAC 02B .0500 et seq.]
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to
Ceriodaphnia dubia at an effluent concentration of 90%.
The permit holder shall perform at a minimum, guarterlX monitoring using test procedures outlined in the "North
Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised December 2010, or subsequent versions
or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised- December 2010) or
subsequent versions. The tests will be performed during the months of January, April, July and October.
These months signify the first month of each three-month toxicity testing quarter assigned to the facility.
Effluent sampling for this testing must be obtained during representative effluent discharge and shall be
performed at the NPDES permitted final effluent discharge below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV below the
permit limit, then multiple -concentration testing shall be performed at a minimum, in each of the two
following months as described in "North Carolina Phase H Chronic Whole Effluent Toxicity Test
Procedure" (Revised -December 2010) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (DMR-1) for the months in which tests were performed, using the parameter code TGP3B for
the pass/fail results and TBP3B for the Chronic Value. Additionally, DWR Form AT-3 (original) is to be sent to
the following address:
Attention: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1623 Mail Service Center
Raleigh, North Carolina 27699-1623
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than 30 days after
the end of the reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements and all
concentration/response data, and be certified by laboratory supervisor and ORC or approved designate signature.
Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for
disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is required,
the permittee will complete the information located at the top of the aquatic toxicity (AT) test form indicating the
facility name, permit number, pipe number, county, and the month/year of the report with the notation of "No
Flow" in the comment area of the form. The report shall be submitted to the Water Sciences Section at the
address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, monitoring will be
required during the following month. Assessment of toxicity compliance is based on the toxicity testing quarter,
which is the three month time interval that begins on the first day of the month in which toxicity testing is
required by this permit and continues until the final day of the third month.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of Water
Resources indicate potential impacts to the receiving stream, this permit may be re -opened and modified to
include alternate monitoring requirements or limits.
Page 4 of 6

Permit NCO086517
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism
survival, minimum control organism reproduction, and appropriate environmental controls, shall constitute an
invalid test and will require immediate follow-up testing to be completed no later than the last day of the month
following the month of the initial monitoring.
A. (3.) ELECTRONIC REPORTING OF DISCHARGE MONITORING
REPORTS [G. S. 143-215.1(b)]
Proposed federal regulations require electronic submittal of all discharge monitoring reports (DMRs)
and specify that, if a state does not establish a system to receive such submittals, then permittees must
submit DMRs electronically to the Environmental Protection Agency (EPA). The Division anticipates
that these regulations will be adopted and is beginning implementation in late 2013.
NOTE: This special condition supplements or supersedes the following sections within Part II of this
permit (Standard Conditions for NPDES Permits):
• Section B. (11.) Signatory Requirements
• Section D. (2.) Reporting
• Section D. (6.) Records Retention
• Section E. (5.) Monitoring Reports
1. Reporting [Supersedes Section D. (2.) and Section E. (5.) (a)]
Beginning no later than 270 days from the effective date of this permit, the permittee shall begin
reporting discharge monitoring data electronically using the NC D'WR's Electronic Discharge
Monitoring Report (eDMR) internet application.
Monitoring results obtained during the previous month(s) shall be summarized for each month and
submitted electronically using eDMR. The eDMR system allows permitted facilities to enter
monitoring data and submit DMRs electronically using the internet. Until such time that the state's
eDMR application is compliant with EPA's Cross -Media Electronic Reporting Regulation
(CROMERR), permittees will be required to submit all discharge monitoring data to the state
electronically using eDMR and will be required to complete the eDMR submission by printing,
signing, and submitting one signed original and a copy of the computer printed eDMR to the
following address:
NC DENR / D'WR / Information Processing Unit
ATTENTION: Central Files / eDMR
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility
being physically located in an area where less than 10 percent of the households have broadband
access, then a temporary waiver from the NPDES electronic reporting requirements may be granted
and discharge monitoring data may be submitted on paper DMR forms (MR 1, 1. 1, 2, 3) or
alternative forms approved by the Director. Duplicate signed copies shall be submitted to the
mailing address above.
Page 5 of 6

Permit NC0086517 - -
Requests for temporary waivers from the NPDES electronic reporting requirements must be
submitted in writing to the Division for written approval at least sixty (60) days prior to the date the
facility would be required under this permit to begin using eDMR. Temporary waivers shall be valid
for twelve (12) months and shall thereupon expire. At such time, DMRs shall be submitted '
electronically to the Division unless the permittee re -applies for and is granted a new temporary
waiver by the Division.
Information on eDMR and application for a temporary waiver from the NPDES electronic reporting
requirements is found on the following web page:
http://portal.ncdenr.or web/wq/admin/bogLipu/edmr
Regardless of the submission method, the first DMR is due on the last day of the month following
the issuance of the permit or in the case of a new facility, on the last day of the month following the
commencement of discharge.
2. Signatory Requirements [Supplements Section B. (11.) (b) and supersedes Section B. (11.) (d)1
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II,
Section B. (I 1.)(a) or by a duly authorized representative of that person as described in Part II,
Section B. (I 1.)(b). A person, and not a position, must be delegated signatory authority for eDMR
reporting purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user
account.and login credentials to access the eDMR system. For more information on North
Carolina's eDMR system, registering for eDMR and obtaining an eDMR user account, please visit
the following web page:
http://portal.ncdenr.org/web/wq/admin/bog/ipu/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make
the following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION
WILL BE ACCEPTED:
7 certify, under penalty of law, that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qual fled personnel
properly gather and evaluate the information submitted. Based on my inquiry of the person or
persons who manage the system, or those persons directly responsible for gathering the information,
the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I
am aware that there are significant penalties for submitting false information, including the
possibility of fines and imprisonment for knowing violations. "
3. Records Retention [Supplements Section D. (6.)1
The permittee shall retain records of all Discharge Monitoring Reports, including eDMR
submissions. These records or copies shall be maintained for a period of at least 3 years from the
date of the report. This period may be extended by request of the Director at any time [40 CFR
122.41].
Page 6 of 6

Gateway Villlage, LLC 6Scate
lity
Gateway Village GW-REM tion
800 block of West Trade Street, Charlotte 28202 24,000
Receivine Stream: UI'to Irwin Creek Stream Class: C
Stream Seamenh. 11-137-1 Sub -Basin: 03A8-34Drainage Basin: Catawba RUC: 0305-01030101 NPDES Permit NCO086517
Latitude: 35* State Grid/USGS Ound: G151NE/ Charlotte East, NCLongitude: g0°51'06" Mecklenburg County

DENR / DWR / NPDES
EXPEDITED FACT SHEET - NPDES PERMIT DEVELOPMENT
NPDES Permit NCO086517
Derek Denard, Compliance & Expedited Permitting Unit / 919-807-6307 04Jun2015
Facility, -Inforrriation
Applicant/Facility Name
Gateway Village, LLC —
Gateway Village Groundwater Remediation
Applicant Address
800 West Trade St, Suite 100, Charlotte, NC 28202
Facility Address
800 block of West Trade Street, Charlotte 28202
Permitted Flow (MGD)
0.05 MGD
Type of Waste
100% Industrial Groundwater Remediation Discharge
Facility Class
PC-1
County
Mecklenburg
Permit Status
Renewal
Regional
Office
MRO
Stream Characteristics
Receiving Stream
UT to Irwin Creek
Stream Classif cation
C
Stream Segment
[ 11-13 7-1 ]
Drainage basin
Catawba
Summer 7Q10 (cfs)
0
Subbasin
03-08-34
Winter 7Q10 (cfs)
0
Use Support
Impaired: Fish
tissue Hg, fish
community poor,
Zn, Pb, Cu
30Q2 (cfs)
0
303(d) Listed
Average Flow (cfs)
0
State Grid
G 15NE
IWC (%)
100%
USGS Topo Quad
Charlotte East, NC
Facility Summary
This facility is an industrial (flow <1 MGD) groundwater remediation system. The design capacity of the
treatment system is 0.050 MGD. There are no significant changes to this facility since the last permit
renewal. The facility consists of the following wastewater treatment units:
• 1200 gallon collection tank with pump
• two (2) bag filters
• two (2) 1000 lb activated carbon canisters (in series)
• effluent meter with recorder.
Monthly average FLOW (MGD) — Last 36 months Mar2012-1762015:
[Ave 0.010 MGD; Maximum, Monthly average flow = 0.029 MGD;
Minimum, Monthly average flow = 0.002]
Toxici — Chronic Toxicity (Ceriodaphnia) limit at 90% with testing in January, April, July and October
[TGP3B/ THP313] [see A. (2)]. Testing over the past three years: GP313 - P/F STATRE 7Day Chr
Ceriodaphnia indicated four (4) failures out of twelve (12) quarterly samples; TGA313 - P/F STAT 48hr
Acu Ceriodaphnia indicated one (1) failure out of four (4) tests; and one (1) THP313 - CHV STATRE 7Day
CHR Ceriodaphnia test gave 45% mortality [see attached toxicity data].
Fact Sheet
Renewal 2015 -- NPDES Permit NCO086517
Page 1

Compliance History — The facility had four limit violations for 1,2-cis-dichloro-ethylene [permit limit is 4.9
[Lg/L] which included one monthly and one daily in February 2012 and April 2014. For 1,2-cis-dichloro-
ethylene the human health standard is 720 µg/L and the water supply standard is 60 µg/L. The stream is an
unnamed tributary that is considered to have a 7Q10 of zero. The stream is classified C waters; therefore,
the human health standard is applicable. The previous permit limit [4.9 µg/L] was more restrictive than the
applicable human health.
For Renewal — This permit reflects discharge at Outfall 001. DWR updated the following:
• for Oil & Grease [00556] remains the same for submitting DMR/eDMR, but uses test EPA method
1664 (SGT-HEM) with results in mg/L for Outfalls 006 & 007
• added Electronic Reporting - Discharge Monitoring Reports page Section A. (3.).
• added updates to facility map, outfall locations and parameter codes
• updated Tetrachloroethene (PCE) limit to 3.3 µg/L in accordance with current human health standards
• updated 1, 2-cis-dichloroethene limit to 720 µg/L in accordance with current human health standards.
Stream — Discharge from WWTP for Outfall 001 is into an unnamed tributary to Irwin Creek [Stream
Segment 11-137-1]. The segment is listed as "impaired" for Hg in Fish tissue, poor fish community, Zn,
Pb and Cu in the 2014 North Carolina Integrated report and 303(d) list.
RPA — A Reasonable Potential Analysis (RPA) was conducted on copper, lead, zinc, iron, tetrachloroethene,
1, 2-cis-dichloroethene, chloroform, trichloroethene and 1,2-dichloroethane because Discharge Monitoring
Reports (DMRs) reported concentration above method -detection levels (MDLs) for the past three years and
one month (37 months) [Jan2012-1762015] of data. [See attached RPA summary sheets.]
• 1, 2-cis-dichloroethene limit was removed because the RPA did not show reasonable potential to
exceed the human health standard (HH) of 720 µg/L.
• Tetrachloroethene (PCE) showed reasonable potential to exceed the human health standard of limit
(HH) of 3.3 µg/L. The limit was updated to 3.3 µg/L based on this standard.
Fact Sheet
Renewal 2015 -- NPDES NC0086517
Page 2

The Charlotte Observer Publishing Co.
Charlotte, NC
North Carolina } ss Affidavit of Publication
Mecklenburg County }
Charlotte Observer
tEFERENCE: 145583 NCDENR/DWQ/POINT SOURCE
1001781776 Public Notice North Carolina Environmental
Management Commission/NPDES Unit 1617
Mail Service Center Raleigh, NC 27699-1617
3efore the undersigned, a Notary Public of said County and
State, duly authorized to administer oaths affirmations, etc.,
)ersonally appeared, being duly sworn or affirmed according
o law, doth depose and say that he/she is a representative of
fhe Charlotte Observer Publishing Company, a corporation
)rganized and doing business under the laws of the State of
)elaware, and publishing a newspaper known as The
,harlotte Observer in the city of Charlotte, County of
Oecklenburg, and State of North Carolina and that as such
ie/she is familiar with the books, records, files, and business
>f said Corporation and by reference to the files of said
)ublication, the attached advertisement was inserted. The
ollowing is correctly copied from the books and files of the
aforesaid Corporation and Publication.
gUBLISHED ON: 06/10/2015
\D SPACE: 127 LINES
TILED ON: 06/10/2015
n Testimow Whereof I have hereunto set
and affixed my seal, the day E
My con
PUBLIC NOTICE
NPM Carolina Emlronmensal Mar
Corlmlesion/NPDES Unit
f 517 Mall Seedce Censer
Raleigh. NC 2757}1517
Noboa of Intent to Issue a
Wastewaler Permit
Mn. NoM Carolina Emir
at
Terminals Holdings, LP.
ToMinal, Mecklenburg Ceunry.
o renew NPDES ermll
57 for d1, harge to Pew reek,
ear Basin.
Mageeen Termina�s Holdings,
Cherlode II Terminal. Mecklenburg
apolietl to renew NPDES
INCOW51 &51 for ducharge so Long
etevAe Rher Basin.
Gateway Ullage, LLC, Mecklenburgi
ePPlletl to renew NPDES
INC00555177 for Its grow
emed�adon site discharging
wastewater to Irwin Croak, Catawb
Basin.
the
,.to, to
3asln.
Club
wastewater to
Basin.
JUN 1 0 2015
My Commission Expires May 27, 2016

Gateway Village, LLC FLEAS©NA1111#eE 9®R-f@WtAcL ANA i*S16 Outfall 001
NCO086517 MAXIMUM DATA POINTS = 58 Qw = 0.05 MGD
Qw (MGD) = 0.05
IQIOS(efs)= 0.00
7QIOS(cfs)= 0.00
7QIOW(cfs)= 0.00
30Q2(cfs)= 0.00
Avg. Stream Flow, QA (efs) = 0.00
Receiving Stream: UT to Irwin
WWTP/WTPClms: PC-1
IWC @ 1QIOS = 100.0%
IWC Q7QIOS= 100.0%
IWC©7QI OW= 100.0%
IWC Q30Q2= 100.0%
IWCQQA= 100.0%
Stream Class: C
PARAMETER
STANDARDS & CRITERIA (2)
y
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
TYPE
J
i
z
o
NC WQS / Applied 'h FAV /
Max Pred
n N Oct. Allowable Cw
Chronic Standard Acute
Cw
Acute: 7.30
RPA for AL(Cu,Zn,Ag,Fe,CO-apply Quarterly
Copper (AL)
NC
7 FW 7.3
ug/L
24 21
561.9
_ _ ___ _
Monitoring in conjunction with TOX Test
Chronic 7.CO
RPA for AL(Cu,Zn,Ag,Fe,CO-apply Quarterly
19 values > Allowable Cw
Monitoring in conjunction with TOX Test
Acute: 33.80
No RPA, Predicted Max a 50% of Allowable Cw-
Lend
NC
25 FW 33.8
ug/L
15 2
50.4
_ _ _ _
apply Quarterly Monitoring
Chronic: 25.00
No RPA, Predicted Max a 50% of Allowable Cw-
No value> Allowable Cw
apply Quarterly Monitoring
Acute: 67.00
RPA for AL(Cu,Zn,Ag,Fe,CO-apply Quarterly
Zinc (AL)
NC
... FW 67
ug/L
24 22
769.E
_ _ _ _ _
Monitoring in conjunction with TOX Test
Chronic: 50.00
RPA for AL(Cu,Zn,Ag,Fe,CI)-apply Quarterly
12 value(s) > Allowable Cw
Monitoring in conjunction with TOX Test
Acute: NO WQS
Iron
NC
1000 HH
µg/L
14 6
394.9
_ _ ___ _ __
Chronic 1,000.00
_ _ _ _ _ _ _ _ _
-NO--RP-A-, Pretlicted Max <50% of Allowbale Cw - No
No value> Allowable Cw
Monitoring required
Acute: 37.00
1,2-dichloroethane
C
37 HH 37
µg/L
14 1
16.8
_ _o_
__
Chrnio 3Z00
N0 RPA, Predicted Max<50%of Allowbale Cw - No
No value> Allowable Cw
Monitoring required
Acute: 170.00
Chloroform
C
1711 HIi 170
ug/L
14 4
14.0
_ _ _ _
Chronic 170.00
_ _ _ _ _ _ _ _
No RPA, Predictetl Maz<50%of Allowbale Cw-No
No value> Allowable Cw
Monitoring required
Acute: 3.30
Tetrachloroethene
C
3.3 1-II-I �.+
µg/L
37 IE11.6__
_ _-___ ------------------------------
Chronic:
RPA for non -AL- apply Monthly Monitoring with Limit
)3-3-0.0
1 value s)> Allowable Cw
Acute: 30.00
Trichloroethene
C
JU IIII 70
µg/L
14 0
Chronic: 36.00
No RPA, Predicted Max <50%of Allowbale Cw-No
No value> Allowable Cw
Monitoring required
Acute: 720.00
1,2-cis-dlchioro-ethylene
NC
60 1111 7'_0
µg/L
37 4
7.0
Chronic 60.00
No RPA, Predicted Max <50%of Allowbale Cw-No
No value> Allowable Cw
Monitoring required
NCOOSS517 9595 GENERIC RPA2014 21.xlsm, rpa
Page 1 of 1 6/4/2015

Table 1
Facility Name
W WTP/WTP Class
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
Stream Class
7Q10s (cfs)
7Q10w (cfs)
3002 (cfs)
CIA (cfs)
1 Q10s (cfs)
Data Source(s)
❑ CHECK TO APPLY MODEL
2014 Generic RPA - 95% Probability/95% Confidence
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
ect Information
❑ CHECK IF HQW OR ORW
Gateway Village, LLC
NCO086517
001
0.050
UT to Irwin
C
0.00
0.00
0.00
0.00
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.
Par01
Par02
Par03
Par04
Par05
Par06
Par07
Par08
Par09
Par10
Par11
Par12
Part 3
Par14
Par15
Par16
Par17
Par18
Par19
Par20
Par21
Pa22
Table 2. Parameters of Concern
Name Type Chronic moclrier Acute PQL
0
w
Units
Copper (AL)
NC
7
FW
7.3
ug/L
❑
Lead
NC
25
FW
33.8
ug/L
❑
Zinc (AL)
NC
50
FW _
. __67 .. _
.
. ug/L,
El
Iron
NC
1000
FW
pg/L
❑
1,2-dichloroethane
C
37
HH
37
pg/L
❑
Chloroform
C
170
HH
170
pg/L
❑
Tetrachloroethene
C
3.3
HH
3.3
pg/L
❑
Trichloroethene
C
30
HH
30
pg/L
❑
1,2-cis-dichloro-ethylene
NC
60
HH
720
pg/L
❑
El
El
El
El
NCO086517 9595 GENERIC RPA2014_21.xlsm, input
6/4/2015

REASONABLE POTENTIAL ANALYSIS
Use'PASTE
SPECIALNalues"
men-copr.
2
Usc"PASTE
SPECIAL -Values"
then-COPr'.
Copper (AL)
Lead
Maximum data points
Maximum data points
-58
Date
Data
BDL=112DL
Results
Date
Data
BDL=1/2DL
Results
2012
41
41
Still Dev.
93.4189
1
2012
< - 5
2.5
Sid Dev.
6,7372
2012
199
199
Mean
66.6042
2
2012
< 5
2.5
Mean
5.0267
2012
73
73
C.V.
1.4026
3
2012
19
18.9
C.V.
1.3403
2012
349
349
n
24
4.
2012
< 5
2.5
n
15
2012
45
45
5
2012
< 5
2.5
2012
166
166
Mult Factor=
1.6100
6
2013
24
24
Mult Factor=
2.1000
2012
52
52
Max. Value
349.0 ug/L
7
2013
< 5
2.5
Max. Value
24.0 ug/L
2013
269
269
Max. Fred CI
561.9 ug/L
8
2013
< 5
2.5
Max. Fred Cx
50.4 ug/L
2013
33
33
9
2013
< 5
2.5
2013
25
25
10
2014
< 5
2.5
2013
20
20
11
2014
< 5
2.5
2013
12
12
12
2014
< 5
2.5
2013
34
34
13
2014
< 5
2.5
2013
17
17
14
2014
< 5
2.5
2013
25
25
15
2015
< 5
2.5
2013
20
20
16
2013
16
16
17
NC0086517 9595 GENERIC RPA2014_21.xlsm, data
- 1 - 6/4/2015

REASONABLE POTENTIAL ANALYSIS
3
Zinc (AL)
Date
Data
BDL=1/2DL
Results
1
2012
70
70
Std Dev.
2
2012
68
6B
Mean
3
2012
174
174
C.V.
4
2012
82
82
n
5
2012
45
45
6
2012
170
170
Mull Factor=
7
2012
225
225
Max. Value
8
2013
484
484
Max. Pred Cw
9
2013
62
62
10
2013
24
24
11
2013
24
24
12
2013
21
21
13
2013
89
89
14
2013
58
58
15
2013
46
46
16
2013
53
53
17
2013
24
24
4
Use 'PASTE SPECIAL-
Iron
Use"PAS'
then"COI
Values' then "COPY".
aaimum data points = 58
1
1
Date
2012
Data
<
25
BDL=1/2DL
12.5
Results
Std Dev.
-
45.2512
103.3487
77.2875
2
2012
37
37
Mean
34.6500
1.3372
3
2012
31.5
31.5
C.V.
1.3060
24
4
2012
<
25
12.5
n
14
5
2012
<
25
12.5
1.5900
6
2013
30
30
Mull Factor =
2.1700
484.0 ug/L
7
2013
<
25
12.5
Max. Value
182.0
769.6 ug/L
8
2013
<
25
12.5
Max. Fred Cw
394.9
9
2013
<
25
12.5
10
2014
<
25
12.5
11
2014
<
25
12.5
12
2014
65
65
13
2014
182
182
14
2015
39.6
39.6
15
16
17
NC0086517 9595 GENERIC RPA2014_21.xlsm, data
2- 6/4/2015

REASONABLE POTENTIAL ANALYSIS
rE SPECIAL -Values"'
?Y• . Maximum data'1 1,2-dichloroethane
soints = 58
Date Data BDL=112DL Results
1 2012 < 1 0.5 Std Dev.
2 2012 < 1 0.5 Mean
3 2012 6.7 6.7 C.V.
4 2012 < 1 0.5 n
5 2012 < 1 0.5
6 2013 < 1 0.5 Mult Factor=
pg/L 7 2013 < 1 0.5 Max. Value
pg/L 8 2013 < 1 0.5 Max. Fred Cw
9 2013 < 1 0.5
10 2014 < 1 0.5
11 2014 < 1 0.5
12 2014 < 1 0.5
13 2014 < 1 0.5
14 2015 < 1 0.5
15
16
17
6
1Use "PA
"- Use "PASTE SPECIAL-
SPECIAL-V
Values" then "COPY".
Chloroform
then -Co
Maximum data points = 58
Maximo
Pints•
1
Date
2012
Data
<
1
BDL=1/2DL
0.5
Results
Std Dev.
1.8360
1.6570
0,9429
2
2012
4A
4.4
Mean
1.4214
1.7574
3
2012
6.5
6.5
C.V.
1.2917
14
4
2012
<
1
0.5
n
14
5
2012
<
1
0.5
2.5100
6
2013
<
1
0.5
Mult Factor =
2.1600
6.7 pg/L
7
2013
<
1
0.5
Max. Value
6.5
16.8 pg/L
6
2013
2
2
Max. Fred Cw
14.0
9
2013
<
1
0.5
10
2014
<
1
0.5
11
2014
<
1
0.5
12
2014
<
1
0.5
13
2014
2
2
14
2015
<
1
0.5
15
16
17
NC0086517 9595 GENERIC RPA2014_21.xlsm, data
-3- 6/4/2015

REASONABLE POTENTIAL ANALYSIS
pg/L
pg/L
NC0086517 9595 GENERIC RPA2014_21.xlsm, data
- 4 - 6/4/2015

inp
Permit Reviewer Notes -Derek Denard
Permit Number:
Applicant/Facility Name:
Permit Status: /Zee7
Regi nal Office:
Latitude: -� � - �
Longitude: ✓
V � J � �
Facility Class: C
County:
CGL
f� �L'r
Outfall:
Flow:
Applicant Address:
f-
Yel
a-17 'X�
Facility Address: r
0 0
6v^g--� A(y-t
41f rlo-jo,,O�
Type of Waste:
Stream Notes
Receiving Stream:
64 7 P—1 e
C
IStream Segment:
Stream Classification:
lDrainage Basin: /
Summer &Q10 (cfs):
�
Subbasin:
Winter 7Q10 (cfs):
HUC Code:
07 n�nlo7
ado
30Q2 (cfs):
C�
State Grid: I
G /v
Average Flow (cfs):
USGS Topo Quad: C 4 Ib
IWC
303 (d): ��-
Use:
Notes
0
zr20-4..