NC0088684_Permit Issuance_20160415

Water Resources
ENVIRONMENTAL QUALITY
PAT MCCRORY
Gnremar
DONALD R. VAN DER VAART
Secretary
S. JAY ZIMMERMAN
Director
April 15, 2016
Mr. Peter Grimaldi, Director of Horticulture
Daniel Jonathan Stowe Conservancy
6500 South New Hope Road
Belmont, NC 28012
Subject: Issuance of NPDES Permit NCO088684
Daniel Stowe Botanical Garden WTP
6500 South New Hope Road, Belmont 28012
Gaston County
Dear Mr. Grimaldi:
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.
We have made the following updates to your previous permit:
• added parameter codes to Section A. (1.)
• updated facility description has been modified to better reflect the operational circumstances
of the facility, including the typical frequency and duration of discharge
• pursuant to a review of data reported during the current permit cycle, including performance
of a reasonable potential analysis upon applicable parameters (Chloride, Copper and Zinc),
monitoring frequency has been reduced from monthly to quarterly for the following
parameters: Total Dissolved Solids, Turbidity, Total Copper, Total Zinc, Total Nitrogen and
Total Phosphorous
• monitoring for pH has been reduced from 2/month to monthly
• monitoring for Total Chlorides has been removed from the permit
• added Discharge Alternatives Evaluation as described in Section A. (2.).
Whole Effluent Toxicity test results submitted during the past three years have demonstrated
that the Water Treatment Plant's effluent is showing potential for causing aquatic toxicity in
the receiving stream. As a result, the Daniel Jonathan Stowe Conservancy shall perform a
Discharge Alternatives Evaluation as described in Section A. (2.) of this permit. This
evaluation is being requested to determine whether there are any economical and
technologically feasible alternatives available to the Daniel Jonathan Stowe Conservancy to
comply with all NC Water Quality Standards. The permittee will be given approximately one
permit cycle to evaluate and document possible treatment/discharge alternatives to eliminate
aquatic toxicity. The evaluation shall be submitted with the permittee's next permit renewal
application and will be carefully reviewed by the Division and the results will be used in the
State of North Carolina I Environmental Quality I Water Resources
1617 Mail service Center I Raleigh. North Carolina 27699-1617
919 807 6300

Mr. Grimaldi
April 15, 2016
Page 2 of 3
development of a compliance schedule or possible variance request for the Daniel Jonathan
Stowe Conservancy. _
We have made the following updates since the draft permit:
• updated stream inform an unnamed tributary to Catawba River (Lake Wylie) [Stream
Segment l l-(123.5)] classified WS-V, B waters (the previous permit and BIMS database
indicated that the stream was Catawba Creek [Stream Segment 11-130] classified C waters
which was incorrect)
• updated the facility map
• the coordinates for the Outfall 001 were adjusted to the following:
Latitude: 35' 10' 13" Longitude: -81" 0311811
• updated footnote 1 in Section A. (1.): Effective December 21, 2016, the permittee shall
report discharge monitoring data electronically using the NC DWR's Electronic Discharge
Monitoring Report (eDMR) internet application. See Special Condition A. (4).
• updated Special Condition A. (4.) for electronic reporting of monitoring reports
• removed Salinity monitoring because this parameter is intended for RO water treatment
systems that typically are found near the coast in which there is a narrative water quality
standard for saltwater
• added a 500 mg/L limit with monthly monitoring for Total Dissolved Solids because
Catawba River (Lake Wylie) is classified as WS-V, B waters.
Starting December 21, 2016, 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 final NPDES Electronic Reporting Rule was adopted and became effective
on December 21, 2015.
The requirement to begin reporting discharge monitoring data electronically using the NC
DWR's Electronic Discharge Monitoring Report (eDMR) intemet application has been added to
your. final NPDES permit. [See Special Condition A. (4.)] For information on eDMR,
registering for eDMR and 6btaining an eDMR user account, please visit the following web page:
http://deg.nc.gov/about/divis'ions/Water-resources/edmr.
For more information on EPA's final NPDES Electronic Reporting Rule, please visit the
following ,web site:
http://www2.epa.gov/compliance/final-national-pollutant-discharge-elimination-system-nndes-
electronic-reportin -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

Mr. Grimaldi
April 15, 2016
Page 2 of 3
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].
esp tfully,��
S. Jay Zimmerman, P.G. for
Division of Water Resources, NCDEQ
Enclosure: NPDES Permit NCO088684 (Issuance Final)
hc: Central Files
NPDES Program Files
MRO Files/ Attn: Corey Basinger
ec: Peter Grimaldi [[e-mail]]
Christine Cordy [[e-mail]]

NPDES Permit NCO088684
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
.DES
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, the
Daniel Jonathan Stowe Conservancy
is hereby authorized to discharge wastewater from a facility located at the
Daniel Stowe Botanical Garden WTP
6500 South New Hope Road, Belmont 28012
Gaston County
to receiving waters designated as an unnamed tributary to Catawba River (Lake Wylie) in the Catawba
River Basin, in accordance with effluent limitations, monitoring requirements, and other conditions set
forth in Parts I,11, III and IV hereof.
This permit shall become effective May 1, 2016.
This permit and. authorization to discharge shall expire at midnight on August 31, 2020.
Signed this day April 15, 2016.
Spy Zimmerman, P.G., Dira
Division of Water Resourc
By Authority of the Environmental Management Commission
Page 1 of 8

NPDES Permit NCO088684
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby
revoked. As of this permit 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, requiiements, terms, and provisions included herein.
Daniel Jonathan Stowe Conservancy
is hereby authorized to:
1. continue to operate a reverse osmosis (RO) - membrane technology water treatment system with
discharge of wastewaters consisting of RO Concentrate and Softener Regeneration with a design
potable flowrate of 0.0038 MGD of high purity water and a wastewater discharge of 0.003552
MGD, serving to fill a 750 gallon tank twice a week; actual volume is much less than design;
located at the Daniel Stowe Botanical Garden, 6500 South New Hope Road, Belmont, NC, Gaston
County.
2. discharge from said treatment works via Outfall 001 at a location specified on the attached map,
into an unnamed tributary to Catawba River (Lake Wylie) [Stream Segment 11-(123.5)], currently a
Class WS-V, B waterbody within Subbasin 03-08-37 WC: 030501011502] of the Catawba River
Basin.
Page 2 of 8

NPDES Permit NCO088684
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 Permit effective date'and lasting until expiration, the Permittee is
authorized to discharge backwash wastewater from reverse osmosis (RO) water treatment system and
similar wastewaters from outfall 001. Such discharges shall be limited, monitored and reported" by the
Permittee as specified below:
s...=:.�f..+.) a.i".:.—ti�:Y-_+i-..._e.,,....�si=,L.
EF�FLENT;C�iARACTERISTICS_
x
r
Pa�amel`er Code,
••, .�-. :,'
_ LIMITS
M nflil - - �p
r� . t - 3t
gverage. �, Maximum ,
+ � .,.;.L r....A... �p,,.,.e:.-.
MD)VITORIN. REQI�REMENTS�
-
Measurementa Sample
Fr`e u nc mpleType
q Location:
Flow (MGD) 50050
Monitor & Report
Monthly
Instantaneous
Effluent
Conductivity (Nmhos/cm) 00094
Monitor & Report
Monthly
Grab
Effluent
pH (su) 00400
6.0 & <_ 9.0 standard units
Monthly
Grab
Effluent
Total Dissolved Solids (mg/L) 70295
500 mg/L
Monthly
Grab
Effluent
Turbidity (NTU) 00070
Monitor & Report
Quarterly
Grab
Effluent
Total Copper (Ng/L) 01042
Monitor & Report
Quarterly2
Grab
Effluent
Total Zinc (Ng/L) 01092
Monitor & Report
Quarterly2
Grab
Effluent
Total Nitrogen (mg/L) C0600
Monitor & Report
Quarterly2
Grab
Effluent
Total Phosphorus (mg/L) C0665
Monitor & Report
Quarterly2
Grab
Effluent
Whole Effluent Toxicity Monitoring3 TGP313
Monitor & Report
Quarterly
Grab
Effluent
Footnotes:
1. Starting on December 21, 2016, begin submitting Discharge Monitoring Reports
electronically using NC DWR's eDMR application system. See Special Condition A. (4.).
2. Monitoring should be conducted in conjunction. with whole effluent toxicity testing.
3. Whole Effluent Toxicity (Ceriodaphnia dubia) at 90%; March, June, September and December;
refer to Special Condition A. (3.).
Conditions:
• All samples must be collected from a typical discharge event.
• There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 3 of 8

NPDES Permit NCO088684
A. (2.) DISCHARGE ALTERNATIVES EVALUATION [15A NCAC 02H .0105]
The Permiee shall assess potential alternatives to eliminate Whole Effluent Toxicity (WET) test failures.
This evaluation shall assess the feasibility of all the following alternatives.
1. Connect discharge to a WWTP: Determine whether the wastewater can be discharged to a
wastewater treatment plant. Approval or disapproval from the plant operator should
be acquired.
2.Obtain a Non -discharge permit: Eliminate the. surface water discharge by obtaining a non -discharge
permit for spray irrigation, infiltration, or subsurface disposal (on -site drainfield,
infiltration gallery, injection wells).
3. Install Wastewater Treatment: Install improved wastewater treatment to enable the facility effluent
to consistently pass the WET test. If this is not technically feasible or cost
prohibitive, please explain and provide estimated costs.
4. Use Alternative Water Treatment Source: Obtain drinking water from another source (nearest
County, City, or Town or other wells) so the discharge or toxicity problem is
eliminated.
5. Use Alternative Water Treatment Method: Install alternative and/or innovative water treatment
methods or operational improvements that do not produce toxic wastewaters. For
example, install a recycle iron/manganese filtration system with no discharge or
combine discharge with WWTP or cooling water effluents.
6. Discharge to a Larger waterhody/Perform a dilution model: Relocate the facility's discharge to as
larger receiving waterbody to eliminate or reduce toxic impacts to the receiving
waterbody given the increased dilution. If applicable, perform a dilution model to
receive allowance for stream dilution in WET test.
7. Combination of Alternatives: Employ any combination of the alternatives listed above that would
result in eliminating or decreasing toxicity until a more feasible solution becomes
available.
The evaluation shall include a present value of costs analysis for all technologically feasible options as
outlined in the Division's "Engineering Alternatives Analysis Guidance Document." This Document can be
found at: http://portal.ncdenr.or web/wq/swp/ps/npdes/permits.
This evaluation is being requested to determine whether there are any economical and technologically
feasible alternatives available to the Permiee to address aquatic toxicity in the plant effluent. Based upon
the evaluation, please identify viable alternatives and present an implementation schedule and project
timeline for the preferred alternative. The Permiee shall submit the Discharge Alternatives Evaluation to
the Division along with the submission of their next permit renewal application (due 6 months prior to
permit expiration on August 31, 2020) to:
NC DENR / Division of Water Resources / Water Quality Permitting
NPDES, Wastewater Branch
1617 Mail Service Center, Raleigh, NC 27699-1617
Page 4 of 8

NPDES Permit NCO088684
A. (3.) CHRONIC TOXICITY PASS/FAIL MONITORING ONLY (QUARTERLY)
[15A NCAC 02B .0500 et seq.]
The permittee shall conduct quarterl chronic toxicity tests using test procedures outlined in the "North
Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised December 2010, or subsequent
versions.
The -effluent concentration defined as treatment two in the procedure document is 90 %. The testing
shall be performed as a Ceriodaphnia dubia 7-day pass/fail test. The tests will be performed during
the months of March, June, September and December. 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.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR-1) for the month in which it was performed, using the parameter
code TGP3B. Additionally, DWR Form AT-1 (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 and accurate and include all supporting chemical/physical measurements
performed in association with the toxicity tests, as well as all dose/response data. 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
io the Water Sciences Section at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, then
monthly monitoring will begin immediately. Upon submission of a valid test, this monthly test
requirement will revert to quarterly in the months specified above.
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.
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.
Page 5 of 8

NPDES Permit N00088684
A. (4.) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS
[G. S. 143-215.1(b)]
Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and
program reports and specify that, if a state does not establish a system to receive such submittals, then
permittees must submit monitoring data and reports electronically to the Environmental Protection
Agency (EPA). The final NPDES Electronic Reporting Rule was adopted and became effective on
December 21, 2015.
NOTE: This special condition supplements or supersedes the following sections within Part H 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 Requirements (Supersedes Section D. (2.) and Section E. (5.) (a)1
Effective December 21, 2016, the permittee shall report discharge monitoring data electronically
using the NC DWR'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 / Division of Water Resources / Water Quality Permitting Section
ATTENTION: Central Files
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. See "How to Request a Waiver from Electronic Reporting" section below.
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.
Starting on December 21, 2020, the permittee must electronically report the following compliance
monitoring data and reports, when applicable:
Page 6 of 8

NPDES Permit N00088684
Sewer ,OverflowBypass Event Reports;
Pretreatment Program Annual Reports; and
Clean Water Act (CWA) Section 316(b) Annual Reports.
The permittee may seek an electronic reporting waiver from the Division (see "How to Request a
Waiver from Electronic Reporting" section below).
2. Electronic Submissions
In accordance with 40 CFR 122.41(1)(9), the permittee must identify the initial recipient at the time
of each electronic submission. The permittee should use the EPA's website resources to identify
the initial recipient for the electronic submission.
Initial recipient of electronic NPDES information from NPDES-regulated facilities means the entity
(EPA or the state authorized by EPA to implement the NPDES program) that is the designated
entity for receiving electronic NPDES data [see 40 CFR 127.2(b)].
EPA plans to establish a website that will also link to the appropriate electronic reporting tool for
each type of electronic submission and for each state. Instructions on how to access and use the
appropriate electronic reporting tool will be available as well. information on EPA's NPDES
Electronic Reporting Rule is'found at: bZ://www2.epa. ov/compliance/final-national-pollutant-
discharae-elimination-system-npdes-electronic-reporting-rule.
Electronic submissions must start by the dates listed in the "Reporting Requirements" section
above. -
3. How to Request a Waiver from Electronic Reporting
The permittee may seek a temporary electronic reporting waiver from the Division. To obtain an
electronic reporting waiver, a permittee must first submit an electronic reporting waiver request to
the Division. Requests for temporary electronic reporting waivers 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 submitting monitoring data and reports. The duration of a
temporary waiver shall not exceed 5 years and shall thereupon expire. At such time, monitoring
data and reports shall be submitted electronically to the Division unless the permittee re -applies for
and is granted a new temporary electronic reporting waiver by the Division. Approved electronic
reporting waivers are not transferrable. Only permittees with an approved reporting waiver request
may submit monitoring data and reports on paper to the Division for the period that the approved
reporting waiver request is effective.
Information on eDMR and the application for a temporary electronic reporting waiver are found on
the following web page:
http://deq.nc-2ov/about/divisions/water-resources/edmr
Page 7 of 8

NPDES Permit NCO088684
4. Signatory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.)
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part
U, Section B. (11.)(a) or by a duly authorized representative of that person as described in Part H,
Section B. (11.)(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:
hU:Hdeg.nc.gov/about/divisions/water-resources/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:
"I certify, under penalty of law, that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qualified personnel
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. "
5. Records Retention [Supplements Section D. (6.)]
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 8 of 8

South New Hope Rd kJP0
pproximate ��. \
t .;, ��_- ��°•. G—J
(` Facility Boundary
V1
[flows southwest]
UT to Catawba River (Lake Wylie)
[flaws southwest]
_� sa
� � l
/ n , 27 \ �e
77
LAKE i' „
Daniel Jonathan Stowe Conservancy
Facility
6500 South New Hope Road, Belmont 28102
LOCatlon
Not to Scale
Receiving Stream: UT to Catawba River (Lake Wylie) Stream Class: WS-IV, B.
Stream Segment: ll-(123.5) Sub -Basin: 03-0847
Drainage Basin: Catawba Ruc: 030501011502
NPDES Permit NCO088684
Latitude: 350 10'13" Longitude: 81003' 18"
North
State GridRJSGS Ouad: G14NE/Belmont, NC Stair. 1:24,000
Gaston County

DEQ/DWR/NPDES
EXPEDITED FACT SHEET - NPDES PERMIT DEVELOPMENT
NPDES Permit NCO088684
Derek Denard, Compliance & Expedited Permitting Unit / 919-807-6307 14Apr2016
Facility Information
Applicant/Facility Name
Daniel Johnathan Stowe Conservancy
Daniel Stowe Botanical Garden WTP
Applicant Address
6500 South New Hope Rd, Belmont, NC 28012
Facility Address
6500 South New Hope Rd, Belmont, NC 28012
Permitted Flow (MGD)
Not limited
Type of Waste
Water Plants and Water Conditioning Discharge — Reverse
Osmosis (RO) Concentrate and Softener Regeneration —
Membrane Technology WTP System
Facility Class
Not Classified
County
Gaston
Permit Status
Renewal
Regional
Office
MRO
Stream Characteristics
Receiving Stream
UT to Catawba River
(Lake Wylie)
Stream Classification
WS-IV, B
Stream Segment
[11-(123.5)]
Drainage basin
Catawba
Summer 7Q10 (cfs)
---
Subbasin [HUC]
03-08-37
[030501011502]
Winter 7Q 10 (cfs)
---
Use Support
Impaired (Cat 5) for PCB
&Hg Fish Tissue
30Q2(cfs)
303(d)Listed
Average Flow (cfs)
State Grid
F14SW
1WC (%)
100%
USGS Topo Quad
Gastonia North, NC
Facility Summary
This facility is a reverse osmosis (RO) - membrane technology water treatment system with discharge of
wastewaters consisting of RO Concentrate and Softener Regeneration with a design potable flowrate of
0.0038 MGD of high purity water and a wastewater discharge of 0.003552 MGD, serving to fill a 750
gallon tank twice a week; actual volume is much less than design;
Monthly average FLOW (MGD) — 36 months March2013-Feb2016:
[Ave 0.00140 MGD; Maximum, Monthly average flow = 0.00426 MGD]
Toxici —This permit requires Whole Effluent Toxicity (Ceriodaphnia dubia) at 90%; March, June,
September and December; refer to Special Condition A. (3.) [TGP3B]. See information on Toxicity
monitoring and the addition of a Discharge Alternatives Evaluation as described in Section A. (2.) in the
Renewal Summary Section below. Twelve (12) out of twelve (12) [100% failure rate] toxicity tests failed
for the review period March2013-F62016.
Fact Sheet
Renewal 2016 -- NPDES Permit NCO088684
Page 1

Data review
DMRs were reviewed for the period of Sep2011-Feb2016 (4 %2 years). DMR data is summarized in Table I
below:
Table I
Parameter
Average
I Max
Min
UOM
00070 - Turbidity
0.51
6.40
0.02
NTU
00094 - Conductivity
409
827
147
umhos/cm
00400 - pH
7.8
8.6
6.7
su
00940 - Chloride (as Cl)
11.9
30.0
3.6
mg/L
01042 - Copper, Total (as Cu)
83
157
16
µg/L
01092 - Zinc, Total (as Zn)
517
1242
38
µg/L
50050 - Flow, in conduit or thru treatment plant
1082.5
4739.3
1.2
GPD
70295 - Solids, Total Dissolved
307
618
96
mg/L
C0600 - Nitrogen, Total (as N) - Concentration
1.56
4.30
0.05
mg/L
C0665 - Phosphorus, Total (as P) -
Concentration
0.20
0.57
0.06
mg/L
Renewal Summary — This permit reflects discharge at Outfall 001. DWR updated the following:
• added parameter codes to Section A. (L)
• updated the facility map
• updated stream inform an unnamed tributary to Catawba River (Lake Wylie) [Stream Segment 1I-
(123.5)] classified WS-V, B waters (the previous permit and BIMS database indicated that the stream
was Catawba Creek [Stream Segment 11-130] classified C waters which was incorrect)
• updated facility description has been modified to better reflect the operational circumstances of the
facility, including the typical frequency and duration of discharge
• pursuant to a review of data reported during the current permit cycle, including performance of a
reasonable potential analysis upon applicable parameters (Chloride, Copper and Zinc), monitoring
frequency has been reduced from monthly to quarterly for the following parameters: Total Dissolved
Solids, Turbidity, Total Copper, Total Zinc, Total Nitrogen and Total Phosphorous
• monitoring for pH has been reduced from 2/month to monthly
• monitoring for Total Chlorides has been removed from the permit
• added Discharge Alternatives Evaluation as described in Section A. (2.).
Whole Effluent Toxicity test results submitted during the past three years have demonstrated that the
Water Treatment Plant's effluent is showing potential for causing aquatic toxicity in the receiving
stream. As a result, the Daniel Jonathan Stowe Conservancy shall perform a Discharge Alternatives
Evaluation as described in Section A. (2.) of this permit. This evaluation is being requested to
determine whether there are any economical and technologically feasible alternatives available to the
Daniel Jonathan Stowe Conservancy to comply with all NC Water Quality Standards. The permittee
will be given approximately one permit cycle to evaluate and document possible treatment/discharge
alternatives to eliminate aquatic toxicity. The evaluation shall be submitted with the permittee's next
permit renewal application and will be carefully reviewed by the Division and the results will be used
in the development of a compliance schedule or possible variance request for the Daniel Jonathan
Stowe Conservancy.
We have made the following updates since the draft permit:
Fact Sheet
Renewal 2016 -- NPDES NCO088684
Page 2

• updated stream inform an unnamed tributary to Catawba River (Lake Wylie) [Stream Segment 1I-
(123.5)] classified WS-V, B waters (the previous permit and BIMS database indicated that the stream
was Catawba Creek [Stream Segment 11-130) classified C waters which was incorrect)
• updated the facility map
• the coordinates for the Outfall 001 were adjusted to the following:
Latitude: 35' 10' 13" Longitude: -81' 03' 18"
• updated footnote 1 in Section A. (I.): Effective December 21, 2016, the permittee shall report
discharge monitoring data electronically using the NC DWR's Electronic Discharge Monitoring
Report (eDMR) internet application. See Special Condition A. (4.).
• updated Special Condition A. (4.) for electronic reporting of monitoring reports
• removed Salinity monitoring because this parameter is intended for RO water treatment systems that
typically are found near the coast in which there is a narrative water quality standard for saltwater
• added a 500 mg/L limit with monthly monitoring for Total Dissolved Solids because Catawba River
(Lake Wylie) is classified as WS-V, B waters.
Stream — Discharge from Daniel Stowe Botanical Garden WTP for outfall 001 is into an unnamed
tributary to Catawba River (Lake Wylie) [Stream Segment 11-(123.5)] classified WS-V, B waters (see
Figure 1.). The previous permit and BIMS database indicated that the stream was Catawba Creek
[Stream Segment 11-130] classified C waters which was incorrect (see Figure 2.). However, GIS
mapping indicates that the discharge is into an unnamed tributary that drains to segment 11-(123.5) just
below segment 11-130 [see attached GIS map]. The segment H-(123.5)a is listed as "Impaired (Cat 5)"
for PCB & Hg in fish tissue in the 2014 Integrated Report 305(b).
Outfall Location: Outfall location was adjusted to Latitude: 35° 10' 13" Longitude: -81° 03' 18". The
previous coordinates Latitude: 35' 10' 13" Longitude: -81 ° 03' 16" use were not on property owned by
Daniel Johnathan Stowe Conservancy. The outfall location was shifted two seconds to the west placing the
outfall long both the stream segment and blue line indicated on USGS Topo Quad Belmont, NC. Previous
permit maps indicated the wrong USGS Topo Quad as Gastonia North, NC.
RPA — A Reasonable Potential Analysis (RPA) was conducted on Turbidity, TDS, Chloride, Copper and
Zinc effluent parameters data because Discharge Monitoring Reports (DMRs) reported concentration above
method -detection levels (MDLs) for the past three (3) years (Sep2011-17e62016), unless otherwise noted.
[See attached RPA summary]
• Chloride did not have reasonable potential to violate state WQS of 230.0 µg/L. The predicted
maximum was less than 50% of the chronic allowable concentration (Cw). Therefore, monitoring
will no longer be required for Chloride.
Fact Sheet
Renewal 2016 -- NPDES NC0088684
Page 3

-- NC Surface Water Classifications
�yKe,
N� ( �l?4y�OFOf
� ,.a Y` _ U
a .It' Ye� , i �=
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r�
7
r s{
NC Surface Water Classifications as�v2om r.. m�m,a�,.,,,im NC Clesslflcatlans WBbslto ,_ 6r_

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Figure 3. The outfall location was shifted two seconds to the west placing the outfall long both the stream
segment and blue line indicated on USGS Topo Quad Belmont, NC. [Image not to scale]
Figure 4. Reasonable Potential Analysis (RPA)
Fact Sheet
Renewal 2016 -- NPDES NCO088684
Page 5

Daniel Stowe Botanical Garden WTP 2014 Freshwater RPA - 95% Probability/95% Confidence
NCO088684 MAXIMUM DATA POINTS = 58
Qw (MGD) = 0.004
IQIOS(cfs)= 0.00
7Q10S(cfs)= 0.00
7QIOW(cfs)= 0.00
30Q2 (cfs) = 0.00
Avg. Stream Flow, QA (cfs) = 0.00
Receiving Stream: Catawba River (Lake Wylie)
WWTP/WTP Class: Not Rated
IWC ® IQIOS = 100.00%
IWC Q7QIOS= 100.00%
IWCQ7QIOW= 100.00%
IWC Q 30Q2= 100.00%
IWC®QA= 100.00%
Stream Class: WS-V, B
Outfall 001
Qw = 0.004256 MGD
PARAMETER
STANDARDS & CRITERIA (2)
w
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
TYPE
(1)
J
a
F
NC WQS / Applied '/m FAV /
Max Pred
it # Det. Allowable Cw
Chronic Standard Acute
Cw
Acute: NO WQS
ChIorldes(AL)
NC
230 FW
mg/L
52 52E60.
_ _ ____ ___
ChfOnic: 230
_ _ _ _
No RP, Pretlicletl Max<50%of Allowable Cw-No
No value> Allowable Cw
Monitoring required
Acute: 7.3
Copper (AL)
NC
7 FW 7.3
ug/L
53 53_
____
Chronic: 7.0
_ _ _ _ _ _ _ _ _
RP for AL(Cu,Zn,Ag,Fe,CO-apply Quarterly
53 value s > Allowable Cw
Monitoring in conjunction with TOX Test
Acute: 67.0
Zinc (AL)
NC
50 FW 67
ug/L
53 53
1,279.3
_ _ _ _____ ____
Chronic: 50.0
_ _ _ _ _ _ _ _ _
RPfor AL(CgZn,Ag,Fe,CI) apply Quarterly
51 values > Allowable Cw
Monitoring in conjunction with TOX Test
Acute: NO WQS
Turbidity
NC
_.- FW
NTU
39 38
8.4
_ Chr_ onic: 25.0
No RP, Predicted Max 150%of Allowable Cw-
No value> Allowable Cw
Monitoring Only
Acute: NO WQS
Total Dissolved Solids
NC
Soo WS
mg/L
53 53
624.2
_ _ _ _ __
Chronic: 500.0
_-_ _ _ _ _ _ _ _ _ _
RP for non -AL- apply Monthly Monitoring with Limit
I values > Allowable C w
NCO088684 RPA 2015.x1sm, rps
Page 1 of 1 4/14/2016

REASONABLE POTENTIAL ANALYSIS
5
Use"PASTE SPECIAL-
Values" nren "Copp' .
Chlorides (AL)
9
Copper (AL)
Use"PASTE
aPECIAI.Values"
then"COPY".
Maximum data points
= 58
Maximum data
points=So
Date
Data
BDL=1/20L
Results
Date Data
BDL=112DL
Results
1
10/14/2011
11
11
Std Des. 4A888
1
10/14/2011
97.7
97.7
Sid Des.
35,3224
2
11/16/2011
8.9
8.9
Mean 11.9
2
11/16/2011
148
148
Mean
82.6340
3
12/13/2011
18
18
C.V. 0.3785
3
12/13/2011
103
103
C.V.
0.4275
4
1/11/2012
3.6
3.6
n 52
4
1/11/2012
76.4
76.4
in
53
5
2/14/2012
8.9
8.9
5
2/14/2012
133
133
6
3/13/2012
11
11
Mull Factor = 1.0
6
3/13/2012
70.4
70.4
Mull Factor =
1.02
7
4/10/2012
6.9
8.9
Max. Value 30.0 ini
7
4/10/2012
127
127
Max. Value
157.0 ug/L
8
5/11/2012
10
10
Max. Fred Cw 30.6 mg/L
8
5/11/2012
138
138
Max. Pred Cw
160.1 ug/L
9
6/12/2012
10
10
9
6/12/2012
105
105
10
7/17/2012
11
11
10
7/1712012
103
103
11
8/10/2012
11
11
11
8/10/2012
88
88
12
9/11/2012
11
11
12
9/11/2012
90.5
90.5
13
10/16/2012
5.3
5.3
13
10/16/2012
19
19
14
11/15/2012
11
11
14
11/15/2012
94.1
94.1
15
12/11/2012
8.9
8.9
15
12/11/2012
107
107
16
1/812013
11
11
16
1/8/2013
102
102
17
2/5/2013
11
11
17
2/5/2013
101
101
18
3/12/2013
5.3
5.3
18
3/12/2013
98.6
98.6
19
4/9/2013
12
12
19
419/2013
91.1
91.1
20
5/10/2013
9.8
9.8
20
5/10/2013
104
104
21
6/4/2013
5.3
5.3
21
6/4/2013
83.7
83.7
22
719/2013
11
11
22
7/9/2013
86.8
86.8
23
8/6/2013
8.9
8.9
23
8/6/2013
79.8
79.8
24
9/10/2013
12
12
24
9/10/2013
88.2
88.2
25
1018/2013
8.9
8.9
25
10/8/2013
73.5
73.5
26
11/5/2013
8.5
8.5
26
11/5/2013
90.8
90.8
27
1213/2013
11
11
27
12/3/2013
110
110
28
1/14/2014
14
14
28
1/14/2014
128
126
29
2/18/2014
11
11
29
2/18/2014
147
147
30
3118/2014
10
10
30
3/18/2014
157
157
31
4/15/2014
8.9
8.9
31
4/15/2014
116
116
32
5/19/2014
8.9
8.9
32
5/19/2014
102
102
33
6/10/2014
9.8
9.8
33
611012014
105
105
34
7/15/2014
8.9
8.9
34
7/15/2014
96
96
35
8/14/2014
19
19
35
8/14/2014
77
77
36
9/30/2014
12
12
36
9/30/2014
43
43
37
10/16/2014
12
12
37
10/16/2014
47
47
38
11/11/2014
13
13
38
11/11/2014
32
32
39
12/16/2014
14
14
39
12/16/2014
63
63
40
1/27/2015
12
12
40
1/27/2015
64
64
41
2/19/2015
12
12
41
2/19/2015
95
95
42
3/17/2015
12
12
42
3/17/2015
84
84
43
4/14/2016
12
12
43
4/14/2016
45
45
44
5/18/2015
14
14
44
5/18/2015
38
38
45
W312015
14
14
45
6/23/2015
52
52
46
7/16/2015
20
20
46
7/16/2015
36
36
47
8/18/2015
30
30
47
8/18/2015
40
40
48
9/15/2015
20
20
48
9/15/2015
60
60
49
10/30/2015
20
20
49
10/30/2015
29
29
50
11/17/2015
20
20
50
11/17/2015
16
16
51
1/12/2016
15
15
51
12/15/2015
25
25
52
2/10/2016
11
11
52
1/12/2016
35
35
53
53
2/10/2016
38
38
54
54
55
55
56
56
57
57
58
58
NCO088684 RPA 2015.xlsm, data
- 1 - 4/14/2016

REASONABLE POTENTIAL ANALYSIS
18
Zinc (AL)
Use "PASTE SPECIAL
Values" then "COPY"
19
Turbidity.
Use"PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
Maximum data
points = 58
Date Data
BOL=112DL
Results
Date Data
BDL=112DL
Results
1
10/14/2011
960
960
Std Dev.
304.9553
1
10/16/2012
0.28
0.28
Std Dev.
1.2405
2
11/16/2011
987
987
Mean
517.4245
2
11115/2012
0.35
0.35
Mean
0.5041
3
12/13/2011
826
826
C.V.
0.5894
3
12/1112012
0.15
0.15
C.V.
2.4609
4
1/11/2012
147
147
IT
53
4
1/8/2013
0.00
0.06
n
39
5
2/14/2012
834
834
5
2/5/2013
0.16
0.16
6
3/13/2012
594
594
Mult Factor =
1.03
6
3/12/2013
0.33
0.33
Mult Factor =
1.32
7
4/10/2012
788
788
Max. Value
1242.0 ug/L
7
4/9/2013
0.07
0.07
Max. Value
6.4 NTU
8
5/11/2012
837
837
Max. Pred Cw
1279.3 ug/L
8
5/10/2013
0.15
0.15
Max. Pred Cw
8.4 NTU
9
6/12/2012
749
749
9
6/4/2013
0.08
0.08
10
7117/2012
702
702
10
7/9/2013
0.05
0.05
11
8/1012012
607
607
11
8/6/2013
0.06
0.06
12
9/11/2012
641
641
12
9/10/2013
4.1
4.1
13
10/16/2012
78.5
78.5
13
10/8/2013
0.05
0.05
14
11/15/2012
718
718
14
11/5/2013
0.06
0.06
15
12/11/2012
677
677
15
12/3/2013
2.5
2.5
16
1/8/2013
682
682
16
1/14/2014
0.17
0.17
17
2/5/2013
674
674
17
2/18/2014
0.47
0.47
18
3/12/2013
632
632
18
3/18/2014
0.07
0.07
19
4/9/2013
645
645
19
4/15/2014
0.02
0.02
20
6/10/2013
739
739
20
5/19/2014
0.09
0.09
21
6/4/2013
600
600
- 21
6/10/2014
0.05
0.05
22
7/9/2013
621
621
22
7115/2014
0.14
0.14
23
8/6/2013
484
484
23
8114/2014
0.49
0.49
24
9/10/2013
639
639
24
9130/2014
0.02
0.02
25
10/8/2013
554
554
25
10/16/2014
0.14
0.14
26
11/5/2013
604
604
26
11/11/2014
0.03
0.03
27
12/3/2013
710
710
27
12/16/2014
0.1
0.1
28
1/14/2014
649
649
28
1/27/2015
0.33
0.33
29
2/18/2014
740
740
29
2/19/2015
0.05
0.05
30
3/18/2014
653
653
30
3/17/2016
0.12
0.12
31
4/15/2014
592
592
31
4/14/2015
0.04
0.04
32
5/19/2014
501
501
32
33
6/10/2014
519
519
33
34
7/15/2014
441
441
34
7/16/2015
0.1
0.1
35
8/14/2014
98
98
35
8/18/2015
0.1
0.05
36
9/30/2014
135
135
36
9/15/2015
6.4
6.4
37
10/16/2014
104
104
37
10/30/2015
1.78
1.78
38
11/11/2014
98
98
38
11/17/2015
0.24
0.24
39
12/16/2014
345
345
39
12/15/2015
0.13
0.13
40
1/27/2015
389
389
40
1/12/2016
0.03
0.03
41
2/19/2015
983
983
41
2/10/2016
0.15
0.15
42
3/17/2015
1242
1242
42
43
4/14/2015
273
273
43
44
5/18/2015
84
84
44
45
6/23/2015
183
183
45
46
7116/2015
933
933
46
47
8/18/2015
105
105
47
48
9/15/2015
289
289
48
49
10/30/2015
70
70
49
50
11/17/2015
38
38
50
51
12/15/2015
41
41
51
52
1/12/2016
51
51
52
53
2/10/2016
138
138
53
54
54
55
55
56
56
57
57
58
58
NCO088684 RPA 2015.xism. data
-2- 4/14/2016

REASONABLE POTENTIAL ANALYSIS
20
Total
Dissolved Solids
Use "PASTE SPECIAL
Values"then"COPY"
. Maximum data
Wall is
Date Data
BDL=1/2DL
Results
1
10/14/2011
263
283
Std Dev.
77.2564
2
11/16/2011
300
300
Mean
306.7358
3
12/13/2011
307
307
C.V.
0.2519
4
1/11/2012
135
135
n
53
5
2/14/2012
288
288
6
3/13/2012
286
286
Mult Factor =
1.01
7
4/10/2012
274
274
Max Value
6180 mg/L
8
5/11/2012
288
288
Max. Fred Cw
624.2 mglL
9
6/12/2012
279
279
10
7/17/2012
288
288
11
8/10/2012
286
286
12
9/11/2012
312
312
13
10116/2012
96
96
14
11/15/2012
279
279
15
12/11/2012
260
260
16
1/8/2013
320
320
17
2/5/2013
290
290
18
3/12/2013
112
112
19
4/9/2013
276
276
20
6/10/2013
270
270
21
6/4/2013
318
318
22
7/912013
291
291
23
8/6/2013
286
286
24
9/10/2013
319
319
25
10/8/2013
301
301
26
11/5/2013
285
285
27
1213/2013
309
309
28
1114/2014
228
228
29
2/18/2014
276
276
30
3/18/2014
346
346
31
4/15/2014
288
288
32
5/19/2014
278
278
33
6/10/2014
300
300
34
7/15/2014
279
279
35
8/1412014
618
618
36
9/30/2014
332
332
37
10/16/2014
301
301
38
11/11/2014
364
364
39
12116/2014
343
343
40
1/27/2015
366
366
41
2/19/2015
304
304
42
3/17/2016
390
390
43
4/14/2015
347
347
44
5/18/2015
360
360
45
6/23/2015
399
399
46
7/16/2015
423
423
47
8/18/2015
379
379
48
9/15/2015
319
319
49
10130/2015
369
369
50
11/17/2015
224
224
51
12/15/2016
419
419
52
1/12/2016
393
393
53
2/10/2016
274
274
54
55
56
57
58
NC0088684 RPA 2015.xlsm, data
- 3 - 4/14/2016

2014 Freshwater RPA - 95% Probability/95% Confidence
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 1. Project Information
❑CHECK IF HQW OR ORW WQS
Facility Name
W WTP/WTP Class
NPDES Permit
Outfall
Flow, Qw, (MGD)
Receiving Stream
Stream Class
7Q10s (cfs)
7Q10w lots)
30Q2 (cfs)
CIA (cfs)
1Q10s (cfs)
Data Source(s)
❑CHECK TO APPLY MODEL
Daniel Stowe Botanical Garden WTP
Not Rated
NCO088684
001
0.004
Catawba River (Lake Wylie)
WS-V, B
0.00
0.00
0.00
0.00
0.00
BIMS Sep201 1 -Feb2016
Follow directions for dataf: j'In some cases a
comment menu list the availa6le 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
3 Paris
Par06
Par07
Fares
Par09
Par10
Parl1
Par12
Par13
Pi
Paris
Par16
Par17
Pails
Par19
Par20
Par21
Par22
Table 2. Parameters of Concern
Name Type Chronic Modifier Acute PQL
a
Units
Copper (AL)
NCO088684 RPA 2015.xlsm, input
4/14/2016

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12-Digit HUC (Subwatershed)
12-Digit Name:
Catawba Creek
12-Digit Code:
030501011502
10-Digit Name:
Lake Wylie -Catawba River
10-Digit Code:
0305010115
8-Digit Code:
03050101
River Basin:
Catawba
12-Digit Area (ac):
20,678.00
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Stream Name: CATAWBA RIVER (Lake
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t '_ 570) North Carolina
portion
p Description: From the upstream
1
side of Paw Creek Arm I .,
of Lake Wylie to North
Carolina-South;,•lJ
Carolina State Line
Classification: WS-V,B
Classification August 2, 1992
Date: �.
River Basin: Catawba
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Description:
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Classification:
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Classification Date:
October 31, 1985
River Basin:
Catawba
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Permit Reviewer Notes - Derek Denard
Permit Number:
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Dom; fob 4 4. �-e ohs« v
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Regional Office:
Latitude:
7� 1v�717
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Stream Notes
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Stream Segment:
Stream Classification:
Drainage Basin: L
Summer 7Q10 (cfs):
Subbasin: G J O 7
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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
AFFIDAVIT OF INSERTION OF ADVERTISMENT
The Gaston Gazette
Gastonia, N.C.
Gaston County
The Gaston Gazette does certify that the advertisement for:
The North Carolina Envi-
PUBLIC NOTICE North Carolina Environmental Management Commission/ NPDES Unit
ronmental Management
Commission ro oses to
1617 Mail Service
I:6, V/ e-
__
wa er disc forge pane o
— ---
the person(s) listed below.
Written comments regard -
In g the proposed permit
will be accepted until 30
Measuring 9.63 inches appeared in The Gaston Gazette, a newspaper published in
days after the puNish date
Gaston County, Gastonia, N.C., in issue(s):
of this The Director
of the Division of Water
C Division
rc
Resources (DWR) may
hold a public hearing
should there be a signer-
cant degree of public inter-
02/09/2016.
est. Please mall comments
and/or information re-
quests to DWR at the
above amInterested
persons ay visit the DWR
mayvisit
at 512 Salisbury Street,
Raleigh,, NC to review in-
on file. AdditionalES
formatinform
information on
information of NPDES
permits and this notice
mayy be found on our
we site: h1limt/portal
.a by
calling [phone].
The Daniel Jonathan
Stowe Conservancy re-
80ew Pof
NPDES sted renewal
ermt
Name of Account: NCDENR/DWQ/NPDES
NCO088WDaniel
o for the
StoweBGarden
Order Number: 54571919
this permiGaston
ci discharrge is
Ad Number: 54681030
reverse osmosis reject
water to an unnamed trib-
utary to Catawba Greek in
the Catawba River Basin.
Sworn to, and subscribed before me this 18 th day of March, 2016.
Solvay USA Inc. requested
renewal of permit
NCO084638 for Gastonia
`
County Nis permitted
\�Ipllllllllllll/I//ll
0�� . r ^ n. )iivv
dis-
c harge is ireatetl GWR
/
IRA�
wastewater to an UT. of
Crowders Creek, in the Ca-
tawba River Basin.
d
?n I OljaRY
Textron, Inc., 3800 Little
Mtn. Rd, Gastonia, applied
=r- � E
e� / 4
C p'
to renew NPDES permit
NCO084622 discharging
treated wastewater toaUT
-
Lisa yble, Notary Public
to Crowders Creek, Ca-
tawba River Basin, Gaston
'rllllll1111�1�j1 pllh��\`\`
County. -
IC -February 9, 2016. My Commission Expires April 25, 2017
Text GS571919 to 56654

Denard, Derek Pe;- ov?f flee C49'-�7,�e a /5
From: Peter Grimaldi <[e-mail]>
Sent: Tuesday, March 15, 2016 9:33 AM
To: Denard, Derek
Cc: Christine Cordy, Basinger, Corey; Tuvia, Ori A; Bell, Wes
Subject: Re: Changes to Draft permit NCO088684 Daniel Stowe Botanical Garden WTP
Good morning Derek. The Garden does not have any comments on the updates to our draft NPDES permit, thank you.
Please advise on when the new permit will be issued and monitoring parameters can change. Thanks again and we look
forward to hearing from you.
Peter Grimaldi
Director of Horticulture, Facilities and Grounds
704.813.9106
Sent from my iPhone
On Feb 29, 2016, at 11:58 AM, Denard, Derek <[e-mail]> wrote:
Please find the following updates to permit N00088684 for Daniel Stowe Botanical Garden WTP as
drafted on October 21, 2015.:
• updated stream inform an unnamed tributary to Catawba River (Lake Wylie) [Stream Segment 11-
(123.5)] classified WS-V, B waters (the previous permit and BIMS database indicated that the stream
was Catawba Creek [Stream Segment 11-130] classified C waters which was incorrect)
• updated the facility map
• the coordinates for the Outfall 001 were adjusted to the following:
Latitude: 35° 10' 13" Longitude: -81° 03' 18"
• updated footnote 1 in Section A. (1.):
Effective December 21, 2016, the permittee shall report discharge monitoring data
electronically using the NC DWR's Electronic Discharge Monitoring Report (eDMR) internet
application. See Special Condition A. (4.).
• updated Special Condition A. (4.) for electronic reporting of monitoring reports.
If you have any comments, please provide them to me via email [[e-mail]] or write to
my attention care of DEQ/ DWR/ NPDES Program no later than March 27, 2016.
Sincerely,
Derek Denard
Environmental Specialist
Compliance & Expedited Permitting Unit
N.C. Division of Water Resources
N.C. Department of Environmental Quality
919 807 6307 office
derek.denard(o)ncden r.aov

N. C. Division of Water Resources
WQ Permitting Section — Wastewater Branch
1617 Mail Service Center
Raleigh, NC 27699-1617
<irnage002.png>
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
<NC0088684 Permit Cover Final 2016.pdf>
<NC0088684 Permit & Eff 2016.pdf>
<NC00888684 map.pdf>
<NC0088684 Fact Sheet 2016.pdf>

Denard, Derek
From: Denard, Derek
Sent: Monday, February 29, 2016 12:17 PM
To: Meadows, Susan; Moore, Cindy; Kinney, Maureen
Subject: FW: Changes to Draft permit NC0088684 Daniel Stowe Botanical Garden WTP
Attachments: NC0088684 Permit Cover Final 2016.pdf; NC0088684 Permit & Eff 2016.pdf;
NC00888684 map.pdf; NC0088684 Fact Sheet 2016.pdf
FYI
From: Denard, Derek
Sent: Monday, February 29, 2016 11:58 AM
To: '[e-mail]'<[e-mail]>;'[e-mail]' <[e-mail]>
Cc: Basinger, Corey <[e-mail]>; Tuvia, Ori A <[e-mail]>; Bell, Wes
<wes. bel I @ ncdenr.gov>
Subject: Changes to Draft permit NC0088684 Daniel Stowe Botanical Garden WTP
Please find the following updates to permit NC0088684 for Daniel Stowe Botanical Garden WTP as drafted on October
21, 2015.:
• updated stream inform an unnamed tributary to Catawba River (Lake Wylie) [Stream Segment 11-(123.5)] classified
WS-V, B waters (the previous permit and BIMS database indicated that the stream was Catawba Creek [Stream
Segment 11-130] classified C waters which was incorrect)
• updated the facility map
• the coordinates for the Outfall 001 were adjusted to the following:
Latitude: 35° 10' 13" Longitude: -81° 03' 18"
• updated footnote 1 in Section A. (1.):
Effective December 21, 2016, the permittee shall report discharge monitoring data electronically using the NC
DWR's Electronic Discharge Monitoring Report (eDMR) internet application. See Special Condition A. (4.).
• updated Special Condition A. (4.) for electronic reporting of monitoring reports.
If you have any comments, please provide them to me via email [[e-mail]] or write to my attention
care of DEQ / DWR / NPDES Program no later than March 27, 2026.
Sincerely,
Derek Denard
Environmental Specialist
Compliance & Expedited Permitting Unit
N.C. Division of Water Resources
N.C. Department of Environmental Quality
919 807 6307 office
derek.denard aC)ncdenr.00v
N. C. Division of Water Resources
WQ Permitting Section — Wastewater Branch
1617 Mail Service Center
Raleigh, NC 27699-1617

Denard, Derek
From:
Christine Cordy <[e-mail]>
Sent:
Tuesday, February 02, 2016 12:55 PM
To:
Denard, Derek; Rodman, Diane
Cc:
[e-mail]; Kara Newport; Chris Gardner; Peter Grimaldi
Subject:
RE: DSBG Effluent Report - Nov 2015
Follow Up Flag: Follow Up
Due By: Tuesday, February 02, 2016 1:25 PM
Flag Status: Flagged
Derek,
Thank you for your response. You are correct, we have been submitting email copies to Diane since October 2014 with
no issues. We will take your submission guidance and I will send the November and December 2015 originals via
certified mail to the mail service center address and continue to do so until the EPA CORMER signature is available. We
thank you in advance for working on a retraction for November 2015.
Regarding the NPDES permit NC0088684, I have been in contact with Kevin Bowden, Environmental Senior Specialist-
N.C. Division of Water Resources. We have cut check number 3269 in the amount of $860.00 and will be remitting
payment to DCDEQ at the 1617 Mail Service Center, Raleigh address today.
Thank you for your assistance in these matters.
Best Regards,
Christine Cordy
Executive Assistant
[e-mail]
D 704-829-1290
Website I Facebook I Twitter I Pinterest I Private Events
Daniel Stowe Botanical Garden
6500 South New Hope Road I Belmont, NC 280121704-825-4490
Experience Art & Orchids daily from January 22 through March 121
From: Denard, Derek [mailto:[e-mail]]
Sent: Tuesday, February 02, 2016 11:38 AM
To: Rodman, Diane <[e-mail]>; Christine Cordy <[e-mail]>
Cc: [e-mail]; Kara Newport <[e-mail]>; Chris Gardner <[e-mail]>; Peter
Grimaldi <[e-mail]>
Subject: Re: DSBG Effluent Report - Nov 2015
Christine,

From what I understood from the e-mail conversation is that you have been submitting DMRs by eDMR and have been e-
mailing copies to Diane. We still require original "wet" signature hard copies to be sent to central files (the mail service
center address) until the EPA approves North Carolina's application for the CROMER compliant electronic signature. I do
not believe that e-mailing your hard copy to anyone with the Division meets the legal signature requirement because it is
a copy of an original. I don't believe sending DMRs to one person is the best way to insure that the DMR is being
receiving since one person can not always be available. Suppose that person is on leave for an extend period of time.
Please send hard copies as the permit standard conditions, DMR form instructions and eDMR guidance requires to the
Mail Service Center address so that multiple staff can insure that it is processed and entered into our database. I do
realize there is potential for the mail to be lost or the DMR to be misfiled. Until the EPA CORMER signature is available,
the only way to insure that we have received a DMR is by certified mail. I will work on a retraction for the NOV. If you
have not done so, but please file a original signed copy for the record.
Another matter I would like to address is that we have not received payment for last years annual fee (invoice
2015PR0I1817). The permit renewal for NPDES permit NC0088684 can not be processed until we receive
this payment. If you have record that you sent payment or have recently sent it, please let me know and I can follow-up.
Sincerely,
Derek Denard
Environmental Specialist
N.C. Division of Water Resources
N.C. Department of Environmental Quality
919 807 6307 office
derek. dena rd O. ncden r. aov
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.
From: Rodman, Diane
Sent: Monday, February 1, 2016 2:39 PM
To: Christine Cordy; Denard, Derek
Cc: [e-mail]; Kara Newport; Chris Gardner; Peter Grimaldi
Subject: RE: DSBG Effluent Report - Nov 2015
Christine,
We realize you understand the timeline and have been very prompt. Derek, please verify if can continue accept the
email copies only.

I believe, and Christine, correct me if my comments are not factual, one of the reports did not arrive in a timely manner
one time, probably just wasn't received in Central Files, and Ms. Cordy began to send the reports by email to ensure we
have received them and was sending the hard copies too. This became confusing at Central files, especially since we
receive many of the facilities' reports the same day. We did inform Ms. Cordy we would accept the email copies and it
wouldn't be necessary to send the hard copies. May we continue to follow this procedure?
Diane
From: Christine Cordy [mailto:[e-mail]]
Sent: Monday, February 01, 2016 2:30 PM
To: Rodman, Diane <[e-mail]>
Cc: [e-mail]; Kara Newport <[e-mail]>; Chris Gardner <[e-mail]>; Peter
Grimaldi <[e-mail]>; Denard, Derek <[e-mail]>
Subject: RE: DSBG Effluent Report - Nov 2015
Hi Diane,
Thanks for your help. Please confirm we understand the timeline for submitting reports (the monthly report needs to be
submitted no later than the last calendar day following the reporting period) and also confirm we no longer need to
send in hard copies.
Thanks again,
Christine Cordy
Executive Assistant
[e-mail]
D 704-829-1290
Website I Facebook I Twitter I Pinteres I Private Events
Daniel Stowe Botanical Garden
6500 South New Hope Road I Belmont, NC 28012 1 704-825-4490
Experience Art & Orchids daily from January 22 through March 121
From: Rodman, Diane [mailto:[e-mail]]
Sent: Monday, February 01, 2016 2:23 PM
To: Christine Cordy <[e-mail]>
Cc: [e-mail]; Kara Newport <[e-mail]>; Chris Gardner <[e-mail]>; Peter
Grimaldi <[e-mail]>; Denard, Derek <[e-mail]>
Subject: RE: DSBG Effluent Report - Nov 2015
Dear Ms. Cordy,
I apologize. You did send this by email and I was also waiting for the hard copy you usually send. I am not sure what
happened in this situation. I will back date November's eDMR to the original date it was emailed.
Diane

Diane Rodman
Office Assistant
Division of Water Resources
North Carolina Department of Environmental Quality
919 807 6306 office
diane. rodman(a)ncdenr.gov
512 N Salisbury Street
1617 Mail Service Center
Raleigh, NC 27699-1617
W. !"Nothing Compares —
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
From: Christine Cordy [mailto:[e-mail]]
Sent: Monday, February 01, 2016 2:16 PM
To: Rodman, Diane <[e-mail]>
Cc: [e-mail]; Kara Newport <[e-mail]>; Peter Grimaldi <[e-mail]>; Chris
Gardner <[e-mail]>; Denard, Derek <[e-mail]>
Subject: FW: DSBG Effluent Report - Nov 2015
Hi Diane,
We received a certified letter (attached) today from NC Water Resources stating we did not submit our Nov 2015 report
in a timely manner. As you can see from the emails below, we received the Nov report from K&W on Wed 12/23/15 at
5:36pm, we submitted that Report to you on Thurs 12/24/15 at 11:29am, and we received your'thank you' on 12/28/15
at 7:56am.
It's our understanding the monthly report needs to be submitted no later than the last calendar day following the
reporting period, and therefore we did submit November's report within the required timeframe. It is also our
understanding since we are submitting these reports on line, it is not a requirement to mail hard copies. If we have the
time line wrong or if we need to still submit hard copies, please advise.
We take this letter very seriously and are unsure of where the breakdown was on this particular reporting submission as
we met the state's requirement. If you could shed some light on this, we would appreciate it. Please note Reports from
Nov and Dec 2015 are attached; Dec was submitted to you 1/13/16.
Thanks in advance for your help in this matter.
Best Regards,
Christine Cordy

Executive Assistant
[e-mail]
D 704-829-1290
Website I Facebook I Twitter I Pinterest I Private Events
Daniel Stowe Botanical Garden
6500 South New Hope Road I Belmont, NC 28012 1 704-825-4490
Experience Art & Orchids daily from January 22 through March 121
From: Rodman, Diane [mailto:diane.rodman@ncdenr.¢ovl
Sent: Monday, December 28, 2015 7:56 AM
To: Christine Cordy <[e-mail]>
Subject: RE: DSBG Effluent Report - Nov 2015
Thank you,
Dlane
From: Christine Cordy [mailto:[e-mail]
Sent: Thursday, December 24, 2015 11:29 AM
To: Rodman, Diane <[e-mail]>
Subject: DSBG Effluent Report - Nov 2015
Diane,
Attached please find DSBG's Effluent Report for Nov 2015.
Happy Holidays!!
Best Regards,
Christine Cordy
Executive Assistant
[e-mail]
D 704-829-1290
Website I Facebook I Twitter I Pinterest (Private Events
Daniel Stowe Botanical Garden
6500 South New Hope Road I Belmont, NC 280121704-825-4490
Experience Holidays at the Garden from November 20 through January 31
-----Original Message -----
From: [e-mail][mailto:[e-mail]
Sent: Wednesday, December 23, 2015 5:36 PM
To: Peter Grimaldi <[e-mail]>; Christine Cordy <[e-mail]>
Cc: Chris Gardner <[e-mail]>
Subject: K&W Laboratories _Nov DMR and Reports
Thank you very much. Merry Christmas!
Kindly,

PAT MCCRORY
Governor
DONALD R. VAN DER VAART
Water Resources
ENVIRONMENTAL QUALITY
Secretary
S. JAY ZIMMERMAN
Director
February 29, 2016
MEMORANDUM
To: Keri B. Cantrell, PhD, PE
Engineer (DWR/PWSS)
Mooresville Regional Office
From: Derek C. Denard
DWR / NPDES Program
919-807-6307; Fax [phone]; [e-mail]
Subject: Review of Discharge to Surface Waters Designated Water Supply (WS)
• unnamed tributary to Catawba River (Lake Wylie) [11-(123.5)], WS-IV, B,
Catawba River Basin;
• renewal of Individual NPDES Permit for Reverse Osmosis Membrane
Technology WTP
for: NPDES NCO088684
Daniel Johnathan Stowe Conservancy/Daniel Stowe Botanical Garden WTP
located at 6500 South New Hope Rd, Belmont, NC 28012
Gaston County
Please provide your comments by March 27, 2016 [email OK]
RESPONSE:
X_ I have reviewed the draft permit and determined that the proposed discharge is not located
sufficiently close to any existing or known proposed public water supply intake (_miles) so
as to create an adverse effect on water quality. The DWR concurs with the issuance of this
permit provided the Permittee properly operates and maintains the facility; the Permittee
meets the stated effluent limits prior to discharge; and the discharge does not contravene the
designated water quality standards.
I concur with issuance of the above permit provided the following conditions are met:
I oppose the issuance of the above permit based on reasons stated below, or attached:
Signed: /�¢ a. _ _ _ Date: 2/29/2016
cc: file
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Phone: [phone] Internet: www.ncwaterquality.org
An Equal Opportunity 1 Affumative Action Employer — Made in part by recycled paper

X,
` NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
Mail the complete application to:
N. C. Department of Environment and Natural Resources
Division of Water Quality / NPDES Unit
1617 Mail Service Center, Raleigh, NC 27699-1627
NPDES Permit Number INCO088684 I
If you are completing this form in computer use the TAB key or the up — down arrows to move from one
field to the next. To check the boxes, click your mouse. on top of the box. Otherwise, please print or type.
1. Contact Information:
Owner Name
Facility Name
Mailing Address
City
State / Zip Code
Telephone Number
Fax Number
e-mail Address
Daniel Jonathan Stowe Conservancy WR
Daniel Stowe Botanical Garden
6500 South New Hope Road
Belmont Water Qua .
r, .Ong S n'
NC 28012
[phone]
[phone]
animaldi(aldsbg oxy
2. Location of facility producing discharge:
Check here if same as above ED
Street Address or State Road
City 1
State / Zip Code
County
3. Operator Information:
Name of the firm, consultant or other entity that operates the facility. (Note that this is not referring to the
Operator in Responsible Charge or ORQ
Name N/A
Mailing Address
City
State / Zip Code
Telephone Number ( )
Fax Number ( )
4. Ownership Status:
Federal ❑
State ❑
Private
Public ❑
Pagel of 3 Version 5/2012

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
S. Type of treatment plant:
❑ Conventional (Includes coagulation, flocculation, and sedimentation, usually followed by
filtration and disinfection)
❑ Ion Exchange (Sodium Cycle Cationic ion exchange)
❑ Green Sand Filter (No sodium recharge)
to Membrane Technology (RO, nanofiltration)
Check here if the treatment process also uses a water softener
6. Description of source water(s) (i.e. groundwater, surface water)
Well water
7. Describe the treatment process(es) for the raw water.
The raw water passes through a water softener and is then purified by a reverse osmosis system.
The purified water is used for irrigation and also supplies a high pressure misting system inside
a conservatory.
S. Describe the wastewater and the treatment process(es) for wastewater generated by the
facility:
The characteristics of the wastewater have been well -documented over the ten years in which the
existing NPDES discharge permit has been maintained in good standing. The wastewater is
ultimately delivered to a nearby creek via underground storm drainage.
9. Number of separate discharge points: 1
Outfall Identification number(s) 001.
10. Frequency of discharge: Continuous ❑ Intermittent
If intermittent:
Days per week discharge occurs: seven Duration: 4 hours
11. Plant design potable flowrate 0.00056 MGD
Backwash or reject now 0.00029 MGD
12. Name of receiving stream(s) (Provide a map showing the exact location of each outfaA including
latitude and longitudet
UT Catawba Creek
13. Please list all water treatment additives, including cleaning chemicals or disinfection
treatments, that have the potential to be discharged.
Alum / aluminum sulfate Yes No X
Page 2 of 3 Version 5/2012

' NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
Iron sulfate / ferrous sulfate Yes No X
Fluoride Yes No X
Ammonia nitrogen / Chloramines Yes No X
Zinc -orthophosphate or sweetwater CP1236 Yes No X
List any other additives below:
14. Is this facility located on Indian country? (check one)
Yes ❑ No
15. Additional Information:
D Provide a schematic of flow through the facility, include flow volumes at all points in
the water treatment process. The plan should show the points] of addition for
chemicals and all discharges routed to an outfall [including stormwater].
D Solids Handling Plan
16. NEW Applicants
Information needed in addition to items 1-15:
New applicants are highly encouraged to contact a permit coordinator with the
NCDENR Customer Service Center.
Was the Customer Service Center contacted? ❑ Yes ® No
Analyses of source water collected
Engineering Alternative Analysis
Discharges from Ion Exchange and Reverse Osmosis plants shall be evaluated using a
water quality model.
17. Applicant Certification
I certify that I am familiar with the information contained in the application and that to the
best of my knowledge and belief such information is true, complete, and accurate.
Clk- ' w'h►NSC.._
e of Person Signing Title
An ' t Date
North8na Gen tote 143-215.6 (bX2) provlees that Any person who knowingly makes any fade slatern ent representatiat, or certification in any application,
record, re an, or other document files or required to be malnt fined under Article 21 or regulations of the Environmental Management Commission Implementing that
Ardde, or who falsities. tampers with, or knowingly renders Inawmte any recording or monibodq devlee or method required th be operated or mraktained wxferArtlCte 21
or regulations of the Envirommerttal Management Commission Implementing that Article, shall be guilty of a misdemeanor punishable by a One not to exceed $25,000, or by
Imprisonment not to exceed six months, or by both. (18 U.S.C. Section 1001 provides a punishment by a One of not more than $25,000 or Imprisonment not more than 5
years, or both, for a sUnDar offense.)
Page 3 of 3 Version 5/2012

NPDES Permit NCO088684
Daniel Stowe Botanical Garden
Schematic of Flow
RAW WATER SUPPLY
3.8 GPM
WATER SOFTENER
3.8 GPM
1'6
RO PRODUCT RO SYSTEM J
2.5 GPM to SERVICE 3.8 GPM FEEDWATER s
0
1 �
RO REJECT
1.3 GPM to STORM*
*RO Reject water flows through —500LF of storm drain before introduction to surface water at outfall.

February 25, 2015
From: Peter Grimaldi
Director of Horticulture
Daniel Stowe Botanical Garden
6500 South New Hope Road
Belmont, NC 28012
To: N.C. Department of Environmental and Natural Resources
Division of Water Quality / NPDES Unit
1617 Mail Service Center
Raleigh, NC 27699,1617
To whom it may concern:
Please accept the Garden's application to renew NPDES Permit No. NC0088684 via Short Form C —
WTP, attached hereto along with the necessary supporting documentation.
The reverse osmosis system at the Garden's Orchid Conservatory functions to purify the water supply for
hand irrigation and a high pressure fog system that maintains proper humidity in the greenhouse. Well
water supplies the purification system and wastewater is delivered to a nearby unnamed tributary of
Catawba Creek via underground storm drainage.
The Garden requests that two additional factors be considered in the permit review process including the
recent establishment of a significantly reduced flowrate as well as the Garden's proposal to reduce
monitoring frequencies while viable engineering alternatives are explored.
A new flowmeter was installed, calibrated and commissioned on May 16, 2014 with the approval of
NCDENR. The new flowmeter is installed directly off the RO system, whereas the original flowmeter
was installed further downstream in the storm drain at a point after other storm water is introduced into
the system. The average daily flow over the past eight months is 0.00029 MOD, whereas the existing
permit acknowledges 0.003552 MGD. The original flowmeter and historical flow data associated with the
permit in question capture an inflated flow volume that included water sources other than the RO reject
water. The reduced actual flow has motivated the Garden to explore engineering alternatives, most
especially the merits of a non -discharge permit to deliver wastewater to the ground surface via irrigation.

. Engineering alternatives are desirable because the monitoring requirements established by the existing
NPDES permit present a financial burden to the Garden, which hereby proposes that measurement
frequencies across almost all parameters be considered for reduction. The Garden is bound to
environmental stewardship by its very mission and remains committed to maintaining its NPDES permit
in good standing, but wishes to identify cost -saving opportunities while engineering alternatives are
explored. The historical data has remained mostly static and wastewater characteristics present a
reasonably low potential to fluctuate and exceed environmental limitations. Reduced measurement
frequencies will make permit compliance more manageable for the Garden without undermining the
assurance that no environmental threat is created by the operation of the RO system.
Please consider the aforementioned scenarios along with our permit application and notify the Garden if
any additional information is required.
Director of Horticulture
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