NC0088684_Permit Issuance_20120504

Ali
RCDENR
North Carolina Department of Environment and Natural Resources
Beverly Eaves Perdue
Governor
Mr. Chris Gardner
Facilities Supervisor
Daniel Stowe Botanical Garden
6500 South New Hope Road
Belmont, NC 28012
Dear Mr. Gardner:
Division of Water Quality
Charles Wakild, P.E.
Director
May 4, 2012
Subject: Issuance of NPDES Permit Renewal
Permit NCO088684
Daniel Stowe Botanical Garden WTP
Gaston County
Dee Freeman
Secretary
The Division of Water Quality (Division) personnel have reviewed and approved your application for renewal of the
subject permit. Accordingly, we are forwarding the attached NPDES discharge permit. It 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.
There are no changes to this final permit from the draft permit sent to you on March 14, 2012.
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 within thirty (30) days after receiving this letter. Your request must
take the form of a written petition conforming to Chapter 150B of the North Carolina General Statutes, and must be
filed with the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, North Carolina 27699-6714.
Unless such demand is made, this permit remains final and binding.
This permit is not transferable except after notifying the Division of Water Quality. The Division may modify and re-
issue, or revoke this permit. Please notice that this permit does not affect your legal obligation to obtain other permits
required by the Division of Water Quality, the Division of Land Resources, the Coastal Area Management Act, or other
federal or local governments.
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: http: l l h2o.state.nc.us 1
An Equal Opportunity 1 Affirmative Acton Employer
NorthCarolina
Natmallff

If you have questions, or if we can be of further service, please contact Jim McKay at iames.mckayna,ncdenr.gov or call
[phone].
Sincerely,
tn arles Wakild, P.E.
Enclosure: NPDES Permit Final NC0088684 Daniel Stowe Botanical Garden WTP
cc: Mooresville Regional Office, Surface Water Protection with Fact Sheet
NPDES Unit
Central Files
Aquatic Toxicology, Susan Meadows - via email

Permit NCO088684
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and
regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the
Federal Water Pollution Control Act, as amended, the
Daniel Jonathan Stowe Conservancy
is hereby authorized to discharge wastewater from a facility located at the
Daniel Jonathan Stowe Conservancy WTP
6500 South New Hope Road
Belmont, North Carolina
Gaston County
to receiving waters designated as an unnamed tributary to Catawba 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.
This permit shall become effective June 1, 2012
This permit and authorization to discharge shall expire at midnight on August 31, 2015.
Signed this day May 4, 2012.
�IA4f--
C les Wakild, P , D1rector
Vision of Water Quality
By Authority of the Environmental Management Commission

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, requirements, terms, and provisions included herein.
The Daniel. Jonathan Stowe Conservancy is hereby authorized to:
1. Continue to discharge RO Concentrate wastewater from reverse osmosis
(RO) water treatment system, and Softener Regeneration from outfall 001.
This wastewater system is located at 6500 South New Hope Road, Belmont
in Gaston County. This high purity water system has a capacity of 3,800
gallons per day of high purity water, and a wastewater flow of 0.003552
MGD on average.
2. Discharge from said outfall at the location specified on the attached map into
an unnamed tributary to Catawba Creek, classified C waters in the Catawba
River Basin.

PermitNCO088684
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Facility
Location
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NPDES Permit No. NCO088684
I Guilford County

Permit NCO088684
A. (I.) - EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
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 and monitored by the Permittee as specified below:
PARAMETER
LIIVQT
V'
MQTUNG :REQUIREMENTS
1�2ottily
tvera" e..Maximum,
Daaly.
rlVfeasu�remienx
Fre uenc
Sample Type
_..:.. _
f Sample.Location
Flow
Monthly
Instantaneous
Effluent
Salinity
Monthly
Grab
Effluent
Conductivity
Monthly:
Grab
Effluent
H
6.0 SU < pH <_ 9.0 SU
2/Month
Grab
Effluent
Total Dissolved Solids
Monthly
Grab
Effluent
Turbidity
Monthly
Grab
Effluent
Total Chloride
Monthly
Grab
Effluent
Total Copper
Monthly
Grab
Effluent
Total Zinc
Monthly
Grab
Effluent
Total Nitro en
Monthly
Grab
Effluent
Total Phosphorus
Monthly
Grab
Effluent
Whole Effluent Toxicity
Monitorin 'Quarterly
Grab
Effluent
Footnotes:
1. Whole Effluent Toxicity (Ceriodaphnia dubia) at 90%; March, June, September and December, refer to Special
Condition A (3).
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.
A. (2.)' Permit Re -Opener: Whole Effluent Toxicity Monitoring
Whole Effluent Toxicity monitoring results indicating aquatic toxicity failure may result in the
Division of Water Quality re -opening this permit, requesting by letter that further action be taken.
Additional metals testing and/ or toxicity identification/ reduction evaluations may be requested
to determine the cause(s) of the effluent toxicity and to reduce effluent loading to acceptable
levels.

Permit NCO088684
A. (3.) CHRONIC TOXICITY MONITORING (QUARTERLY)
The permittee shall conduct quarterly chronic toxicity tests using test procedures outlined in the
"North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998, or
subsequent versions.
The effluent concentration defined as treatment two in the procedure document is 90 %. The
permit holder shall perform quarterly monitoring using this procedure to establish compliance
with the permit condition. The tests will be performed during the months of March, June,
September and December. Effluent sampling for this testing 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, DWQ Form AT-1 (original) is to be sent to the following
address:
Attention: North Carolina Division of Water Quality
Environmental Sciences Section
1621 Mail Service Center
Raleigh, N.C. 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental 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 to the Environmental 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 Quality 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.

DENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NCO088684
Facility Information
Applicant/Facility Name:
Daniel Jonathan Stowe Conservancy/ Daniel Stowe Botanical Garden
Applicant Address:
6500 South New Hope Road, Belmont North Carolina 28012
Facility Address:
6500 South New Hope Road, Belmont North Carolina 28012
Permitted Flow
Not limited. Design capacity is 0.0038 MGD.
Type of Waste:
Reverse Osmosis RO backwash
Facility/Permit Status:
Renewal
Facility Classification
PCNC
County:
Gaston
Miscellaneous
Receiving Stream:
UT to Catawba
Creek Lake Wylie)
Regional Office:
Mooresville
Stream Classification:
C
State Grid/
USGS TooQuad:
F14SW/
Gastonia North
303(d) Listed?
Yes, due to fair
bioclassification in
2012 Draft List. All
NC waters are
impaired for Hg for
fish consumption.
Permit Writer:
Jim McKay
Subbasin:
03-08-37
Date:
February 21, 2012
Drainage Area mil :
N/A
t .: r ,�, ° � ...
yh
£ r sr
Summer 7Q 10 cfs
0
Winter 7Q 10 (cfs):
0
30Q2 (cfs)
0
Average Flow cfs
0
IWC % :
100
Primary SIC Code:
N/A
SUMMARY
Daniel Stowe Botanical Garden's Orchid Conservatory uses a reverse osmosis (RO) water purification
system as part of water treatment to purify ground water to be used to hand -water orchid plants inside the
Conservatory, and to supply water to a high pressure misting system overhead to provide additional
moisture to the air inside the Conservatory. The facility is designed to provide 3,800 gallons per day of
purified water. The backwash wastewater is estimated to be 3,800 gallons per day. The facility
discharges the backwash wastewater to an unnamed tributary to Catawba Creek.
The receiving stream (Catawba Creek) is classified C waters in the Catawba River Basin. This reach is
listed on the 2012 Draft 303(d) list. It is impaired for fair biological integrity.
PermittingStrategy:
trategy:
Permitting Strategy for Water Treatment Plants for Reverse Osmosis and Ion Exchange is followed for
this facility. There is no wastewater treatment facility, it is rated PCNC and does not require an ORC.
The permitting strategy for RO facilities states that monitoring for temperature and DO can be removed if
no impact is seen to the receiving stream after one permit cycle, so these parameters will be removed
from the permit. The strategy also states that facilities under 0.05 MGD only have to monitor nutrients if
discharging into NSW. Catawba Creek is not classified NSW, but Lake Wylie does have a nutrient
TMDL and nutrient problems, so Total Nitrogen and Total Phosphorus monitoring will remain in the
permit.
Daniel Stowe Botanical Garden Fact Sheet
NPDES Permit NCO088684 Renewal
Page 1

Discharge Data Review and RPA
DMR data for 2009, 2010, and 2011 was reviewed. Turbidity is not being monitored. Since the
permitting strategy requires turbidity monitoring, it will be added to the permit. Arsenic is all reported
below detection levels, so arsenic will be removed from the permit. Copper and Zinc both showed RP,
but are action level parameters, monitoring will continue with no limits. Chlorides, Fluoride, and Iron all
showed no RP. Monitoring for Fluoride and Iron will be removed from the permit. Chlorides will
remain monitored due to the use of a softener. The discharge is to a dry ditch, so in -stream monitoring
has no meaning and will be deleted from the permit. D.O. showed a minimum level of 6.8 mg/ L, which
is above the instream water quality standard of 5.0 mg/ L.
Whole Effluent Toxicity Testing
The facility performs chronic Tox testing using Ceriodaphnia dubia at 90%. They have failed every one
of the tests. The Division is developing a schedule of compliance that will require the facility to
eliminate toxicity or apply for a variance.
Proposed Changes to the Permit
• Monitoring for Temperature, and D.O. will be removed. See Permitting Strategy section.
• Monitoring for Arsenic, Fluoride, and Iron will be removed. See Discharge Data Review and
RPA section.
• The facility does not add chlorine to the water, so the TRC limit and footnote will be removed.
• The facility does not use chloramines or show ammonia concentrations at elevated levels, so
ammonia -nitrogen monitoring will be removed.
• Monthly monitoring for turbidity will be added to the permit.
• All in -stream monitoring has been removed from the permit.
• A reopener clause will be added to the permit for when ESS devises a compliance schedule to
address R.O. discharge problems with failing WET testing.
PROPOSED SCHEDULE FOR PERMIT ISSUANCE:
Draft Permit to Public Notice: March 2012 (est.)
Permit Scheduled to Issue: May 2012 (est.)
STATE CONTACT:
If you have any questions on any of the above information or on the attached permit, please contact Jim
McKay at [phone], or by email at [e-mail].
NAME: DATE: 3 f / AP 14—
REGIONAL OFFICE COMMENT:
NPDES SUPERVISOR COMMENTS
Daniel Stowe Botanical Garden Fact Sheet
NPDES Permit NCO088684 Renewal
Page 2

PUBLIC 11011C .
North Carolina
Environmental
Management
Commission/
NPDES Unit
1617 Mail Service
Center
Raleigh, NC
27699-1617
Notice of Intent
to Issue a
NPDES
Wastewater
Permit
The North Carolina Envi-
ronmental Management
Commission pre s to
issue a NPDES waste-
water a permg to
the person(.) ed below.
Written comments regard-
ing the proposed permit
will be accepted unfit 30
days after tihe publish date
of this notice. The Director
of the NC Division of
Water Quality (DWQ) may
hold a public hearing
should there be a sionifi-
quests to DWQ at the
above address. Interested
parsons may visit the
DWQ at 512 N. Salisbury
Street Raleigh, NC to re-
view information on file.
Additional information on
NPDES permits antl this
notice may be fountl on our
websfte:
g_ortal.ncdenr.or�/we
gbyyrcalling
9%) 807- 6er. .
Daniel Stoh
Garden, Br
Carotins has
newel of N
ted facility discharges re-
verse osmosis water treat-
ment system to an un-
named tributary to Ca-
tawba Creek within the Ca -
Town of Belmont has ap-
plled for renewal of
NPDES .permit
NCO077763 for the Bek
mont WTP in Gaston
County. This permitted fa-
cility discharges treated
wastewater to the Catawba
River in the Catawba River
Basin.
IC -March 18, 2012.
Info: text GS509016 to
56654
AFFIDAVIT OF INSERTION OF ADVERTISMENT
The Gaston Gazette
Gastonia, N.C.
Gaston County
The Gaston Gazette does certify that the advertisement for:
NOTICE OF INTENT TO ISSUE NPDES WASTEWATER PERMIT: DANIEL STOWE
BOTANICAL GARDENS, N0007776
Measuring 8.80 inches appeared in The Gaston Gazette, a newspaper published in
Gaston County, Gastonia, N.C., in issue(s):
03/18/2012
Name of Account: NCDENR/DWQ/Point Source Branch
Order Number: 54509016
Ad Number: 54573621
Sworn to, and subscribed before me this 19 th day of March, 2012.
PIIGCO 4
NGTAR�,'
PUBLIC
,�C�
Tina McCombs, Notary Public
My Commission Expires July 4, 2012

Daniel Stowe Botanical Garden REASONABLE POTENTIAL ANALYSIS Outfall 061
NCO088684 Caw = 0.0036 MGD
Qw (MGD) =
IQ I OS (cfs) =
7Q 1 OS (cfs) =
7QIOW (cfs) =
30Q2 (cfs) =
Avg. Stream Flow, QA (cfs) =
Receiving Stream:
0.00
0.00
0.00
0.00
0.00
0.00
UT to Catawba Creek
WWTP/WTP Class: NR
1WC @ IQIOS = 100.00%
IWC @ 7Q1OS = 100.00%
IWC @ 7Q10W = 100.00%
IWC @ 3OQ2 = 100.00%
IWC @ QA = 100.00%
Stream Class: C
CHRONIC TEST CONCENTRATION = DEFAULT %
a80%
PARAMETER
STANDARDS S CRITERIA (2)
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
TYPE
(1)
a
Z
NC WQS / Applied % FAV /
11 # Det. Max Pred Allowable Cw
Chronic Standard Acute
Cw
Acute: NO WQS
Chlorides (AL)
NC
230 FW(7Q1Os)
mg/L
35 35
23
_ ____
Chronic: 230
_____ _____-_ _______
No RP, No Limit
No value > Allowable Cw
Acute: 7.3
Copper (AL)
NC
7 FW(7Q 1 Os) 7
ug/L
34 34
204
Chronic: 7.0 -
-----------
34 values > Allowable Cw
Acute: NO WQS
Fluoride
NC
1800 FW(7Q 1 Os)
ug/L
32 32
391.0
_ _ _ _ _ _ _ _ _ _
Chronic: 1,800.0
_ _ _ _ _ _ _ _ _ _
No RP, No Limit
No value > Allowable Cw
Acute: 67.0
Zinc (AL)
NC
50 FW(7Q1Os) 67
ug/L
34 34
1,809.0
_ _
Chronic: 50.0
— — — — _ _ — - _ _ _ — —_ _
34 values > Allowable Cw
Acute: NO WQS
Iron
NC
1000 FW(7Q 1 Os)
µg/l
20 2
327.25000
_
_ _
Chronic: 1000.00000
_ _ _ _ _ _
No RP, No Limit
No value > Allowable Cw
2011 RPA-Freshwater, rpa
Page 1 of 1 2/24/2012

Table 1
Facility Name
W WTPIWTP Class
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
Stream Class
7Q1 Os (cfs)
7Q10w (cfs)
30Q2 (cfs)
CIA (cfs)
1010s (cfs)
Data Sources)
CHECK w MODEL
Freshwater RPA
UREQUIRED DATA ENTRY
ect Information
❑ CHECK it HQW Or ORW only
Daniel Stowe Botanical Garden
NR
NCO088684
001
0.00350
UT to Catawba Creek
0,00
0,00
0.00
o.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
P2r04
Par06
Psr06
Par07
Psr08
Par09
Parlo
Parit
Par12
Pads
Parl4
Perlis
Paris
Parl7
Parle
Parts
Par20
Par2l
Par22
Table 2. Parameters of Concern
Name Type Chronic MoTfcr Acute PQL Units
Arsenic
C
50
FW
ug/L
Arsenic
C
10
HHIWS
ug/L
Beryllium
NC
6.5
FW
ug/L
Cadmium
NC
2
FW
15
ug/L
Chlorides (AL)
NC
230
FW
mglL
Chlorinated Phenolic Compounds
NC
1
A
ug/L
Total Phenolic Compounds
NC
300
A
ug/L
Chromium
NC
50
FW
1,022
ug/L
Copper (AL)
NC
7
FW
7.3
ug/L
Cyanide
NC
5
FW
22
10
ug/L
Fluoride
NC
1,800
FW
ug/L
Lead
NC
25
FW
33.8
ug/L
Mercury
NC
12
FW
0.5
ng/L
Molybdenum
NC
2,000
HH
ug/L
Nickel
NC
88
FW
261
ug/L
Selenium
NC
5
FW
56
ug/L
Silver (AL)
NC
0.06
FW
1.23
ug/L
Zinc (AL)
NC
50
FW
67
ug/L
Iron
NC
1000
FW
pg/I
EF4
I
2011 RPA-Freshwater, input
2/24/2012

REASONABLE POTENTIAL ANALYSIS
Chlorides (AL)
Copper (AL)
Date Data
BDL=1/2DL
Results
• •
Date
Data
BDL=1/2DL
Jan-09 _..
9.0
9
Sad Dev.
1.9184
1
Jan-09
119
119
Feb-09
9.0
9
Mean
9.4
2
Feb-09
108
108
Mar-09
8.9
8.9
C.V.
0.2040
3
Mar-09
96
96.3
Apr-09
7.0
7
n
35
4
Apr-09
85
a5
May-09
8.9
8.9
5
May-09
129
129
Jun-09
11.0
11
Mull Factor =
1.3
6
Jun-09
72
72.3
Jul-09 A
9.0
9
Max. Value
18.0 mg/L
7
Jub09
102
102
Aug-09 w
9.0
9
Max. Pred Cw
22.9 mg/L
8
Aug-09
126
126
Sep-09
11.0
11
9
Sep-09
118
118
Oct-09
9.0
9
10
Oct-09
161
161
Nov-09
5.3
5.3
11
Nov-09
31
31.3
Deo09
9.0
9
12
Dec-09
122
122
Jan-10
9.0
9
13
Jan-10
103
103
Feb-10
8.9
8.9
14
Feb-10
125
125
Mar-10
9.0
9
15
Mar-10
113
113
Apr-10
9.0
9
16
Apr-10
114
114
May-10
9.0
9
17
May-10
118
118
Jun-10
11.0
11
18
Jun-10
119
119
Jul-10
11.0
11
19
Jul -IQ
95
94.8
Aug-10
8.9
8.9
20
Aug-10
108
108
Sep-10
8.9
8.9
21
Sep-10
oct-10
7.0
7
22
Oct-10
105
105
Nov-10
9.0
9
23
Nov-10
125
125
Dec-10
11.0
11
24..
Dec-10
126
126
Jan -it
8.9
8.9
25
Jan-11
110
110
Feb-11
9.0
9
26
Feb-11
- 116
116
Mar-11
11.0
11
27
Mar-11
111
111
Apr-11
8.9
8.9
28
Apr-11
104
104
May -it
8.9
8.9
29
May-11
94
93.7
Jun-11
8.9
8.9
30
Jun-11
100
99.5
Jul-11
8.9
8.9
31
Jul -it
100
99.6
Aug-11
8.9
8.9
32
Aug-11
87
87.4
Sep-11
33
Sep-11
Oct-11
11.0
11
34
od-11
98
97.7
Nov-11
8.9
8.9
35
Nov-ii
148
148
Dealt
18.0
18
36
Dec-11
103
103
37
Results • i 11
SW Dev.
21.9019
Mean
108.5441
C.V.
0.2018
n
34
Mult Factor =
1.27
Max. Value
161.0
Max. Pied Cw
204.5
2011 RPA-Freshwater, data
- 2 - 2/24/2012

REASONABLE POTENTIAL ANALYSIS
2011 RPA-Freshwater, data
-1- 2/24/2012

REASONABLE POTENTIAL ANALYSIS
ug/L
ug/L
Fluoride
Date
Data
BDL=112DL
Results
1
Jan-09
300
300
Std Dev.
31.5206
2
Feb 09
260
260
Mean
270.0000
3
Mar-09
280
280
C.V.
0.1167
4
Apr-09
160
160
n
32
5
May-09
260
260
6
Jun-09
220
220
Mull Factor =
1.15
7
Jul-09
260
260
Max. Value
340.0 ug/L
8
Aug-09
260
260
Max. Fred Cw
391.0 r1911
9
Sep,09
260
260
10
Oct-09
250
250
11
Nov-09
12
Dec-09
280
280
13
Jan-10
�
14
Feb-10
250
250
15
Mar-10
260
260
16
Apr 10
260
260
17
May 10
260
260
18
Jun-10
270
270
19
Jul-10
20
Aug-10
280
280
21
Sep-10
290
290
22
Oct-10
270
270
23
Nov-10
260
260
24
Deo-10
280
280
25
Jan.11
260
260
26
Fetr11
260
260
27
Mar-11
270
270
"
28
Apr-11
280
280
29
May-11
330
330
30
Jun-11
230
280
31
Jul-11
280
280
32
Aug-11
300
300
33
Sep-11
34
Oct-11
250
250
35
Nov-11
320
320
36
Dec-11
340
340
37
Zinc (AL)
Date
Data
BDL-112DL
Results
Jan-09
1070
1070
Std Dev.
Feb-09
- 1140
1140
Mean
Mar-09
1120
1120
C.V.
Apr-09
1090
1090
n
May-09
1340
1340
Jun-09
943
943
Mult Factor=
Jul-09
1240
1240
Max. Value
Aug-09
1100
1100
Max. Pred Ow
Sep-09
919
919
Oct-09
952
952
Nov-09
175
175
Deo-09
942
942
Jan-10
1200
1200
Feb-10
976
976
Mar-10
1110
1110
Apr-10
1180
1180
May-10
1180
1180
Jun-10
1110
1110
Jul-10
95
94.8
Aug-10
968
968
Sep-10
Oct-10
920
920
Nov-10
1030
1030
Dec-10
1080
1080
Jan-11
931
931
Feb-11
946
946
Mar-11
1020
1020
Apr-11
1050
1050
May-11
859
859
JunA1
835
835
Jul-11
835
835
Aug-11
760
780
Sep-11
Oct-11
960
960
Nov-11
: 987
987
Deo-11
826
826
967.9059
0.2556
34
1.35
1340.0
1809.0
Im
2011 RPA-Freshwater, data
2124/2012

REASONABLE POTENTIAL ANALYSIS
ug/L
ug/L
Date Data
BDL=1/2DL
Results
Emilidp]y
Jan-09Ekt
50.0
25
Sld Dev.
24.8218
Feb-09'"e'
50.0
25
Mean
32.9100
Mar-09
50.0
25
C.V.
0,7542
ADr-09
50.0
25
n
20
119.0
119 Mull Factor =
2.75
50.0
25 Max. Value
119.00 pg/I
50.0
25 Max. Fred Cw
327.25 pg/I
50.0
25
50.0
25
50.0
25
50.0
25
may-10
un-10
Jul-10
Aug-10
Sep-10
Oct-10
Nov-10
89.2
89.2
Dec-10
JanAll
Feb-11'
Mar-11 <
50.0
25
Apr-11
May-11 <
50.0
25
Jun-11 <.
50.0
25
Jul-11 <
50.0
25
Aug-11 <
50.0
25
Sep-11
Oct-11 <
50.0
25
Nov-11 <
50.0
25
DecA1 <
50.0
25
-4-
2011 RPA-Freshwater, data
2/24/2012

Apr 19 10 10:00a Wood 704-829-1243 p.2
Daniel Stowe Conservatory
NPDES Permit NCO089684
Here at Daniel Stowe Botanical Garden located in the Orchid Conservatory we have a reverse osmosis
system. The water is supplied by a well here on the property, passes through the RO system. The treated
water from the RO system is then used to water plants and goes through a misting system to mist
plants.
Here at Daniel Stowe Botanical Garden we do not have a Sludge Management Plan. The RO system does
not create any solid waste.
o _ D
APR 19 2010
DEPf_- -W 'ntt ZgkmCH

To: NPDES Unit
Water Quality Section
Attention: James McKay
Date: April 28, 2010
SOC PRIORITY PROJECT: No
NPDES STAFF REPORT AND RECOMMENDATIONS
County: Gaston
NPDES Permit No.: NC0088684
PART I - GENERAL INFORMATION
Facility and address: Daniel Stowe Botanical Garden
6500 South New Hope Road
Belmont, NC 28012
2. Date of investigation: April 21, 2010
Report prepared by: Michael L. Parker, Environmental Engineer 11
4. Person contacted and telephone number: Eric Woodward, [phone]
5. Directions to site: The entrance to the Daniel Stowe Botanical Gardens is located on
Highway 279 (South New Hope Road) = I/? mile north of the junction of Hwy. 279 and
Hwy. 273 (Armstrong Road) in southern Gaston County.
6. Discharge point(s), list for all discharge points:
Latitude: 350 09' 34"
Longitude: 800 03' 06"
Attach a USGS Map Extract and indicate treatment plant site and discharge point on map.
USGS Quad No.: G14NE
Receiving stream or affected surface waters: UT to Catawba Creek (Lake Wylie)
a. Classification: WS-1V
b. River Basin and Subbasin No.: Catawba 030837
C. Describe receiving stream features and pertinent downstream uses: The receiving
stream is a dry ditch at the point of discharge, which is dominated by storm water
flow during periods of wet -weather. There are no other downstream dischargers
known.

Page Two
PART H - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater: 0.0038 MGD (Design Capacity)
b. What is the current permitted capacity: NIA (Intermittent)
C. Description of existing or substantially constructed WWT facilities: There are no
existing WWT facilities.
d. Description of proposed WWT facilities: The applicant does not plan to construct
WWT facilities at this time, however the wastewater is generated from a reverse
osmosis water treatment system that includes the use of a water softener.
e. Possible toxic impacts to surface waters: There are no toxic impacts are
expected, however, the permittee has experienced difficulty in complying with the
toxicity testing requirement due to the fact the discharge enters a dry ditch and
testing must be performed at 90% concentration.
PART III - OTHER PERTINENT INFORMATION
1. Special monitoring or limitations (including toxicity) requests: The current permit
contains upstream and downstream monitoring (no limits) for temperature, salinity,
conductivity, DO, and pH. As mentioned in Part I, No. 7 above, this discharge enters a
storm water drainage channel that typically only carries flow during storm events.
During the majority of the year, this channel is dry for a distance of several hundred feet
below the point of discharge except during storm events. For that reason, instream
collection of the above noted parameters when channel flow is predominately a storm
event would likely not provide any useful WQ data in which to base compliance with WQ
standards. Prior to permit reissuance, a determination should be made as to the necessity
of continuing instream monitoring in the renewed permit.
2. A review of self -monitoring data noted the presence of copper in the waste stream at
levels well above the 5.0 ug/1 water quality standard for this parameter. A
possible source of the copper in the effluent may be the copper piping used in the
construction of the RO treatment system, however, there may be other sources as well. At
low pHs, metals (copper and lead in particular) have been known to leach out from metal
piping, however, effluent pH levels at this facility are well above the 6.0 standard units
set forth in the permit. Zinc was also found in the effluent at levels well above the 50
ug/l action level set forth in our Rules. Given the lack of receiving waters at the point of
discharge (see No. 1 above), it is not anticipated that either copper or zinc are creating a
negative effect on downstream surface waters.

Page Three
PART IV - EVALUATION AND RECOMMENDATIONS
The Daniel Stowe Botanical Garden discharges up to 3800 gpd of wastewater from a
reverse osmosis (RO) ground water treatment system that is used to produce water for plant
irrigation and a high pressure misting system. The RO system is primarily designed to remove
mineral deposits found in the ground water so it can be used on specific plants grown at the
Garden. There are no changes to the permit being requested at this time by the permittee.
Changes suggested by the RO are addressed in Part III above.
Pending a final review by the NPDES Unit, it is recommended that the permit be reissued
as requested.
f
S�zB fd
Signature of Report Preparer Dat
Water Quality Regional Supervisor Date
hAdm�duMd:mweAm

Daniel Jonathan Stowe Conservancy
Daniel Stowe Botanical Garden
6500 South New Hope Ad.
Belmont, N.C.
28120
N.C. Department of Environment and Natural Resources
Division of Water Quality / NPDES Unit
1617 Mail Service Center
Raleigh, N.C.27699
Dear Sir/ Mama,
I am requesting the renewal of NPDES Permit Number NC00088684. There has been no change to the
water treatment system or disposable of wastewater. The water is fed from a well to a reverse osmosis
water treatment system, which is used to water plants inside the conservatory. There is no change to
how the water is treated and is tested every month and reported.
Thank You,
Eric Woodward
Eric Woodward ,
Facilities Supervisor
Daniel Stowe Botanical Garden

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 27699-1617
NPDES Permit Number NC00
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.
I. Contact Information:
Owner Name
Facility Name
Mailing Address
�'
Q.
A)CIZ Ewe
City
Qc`wAoa t . A
. e .
State / Zip Code
A) M C V
2 '& O�►�.
Telephone Number
17Oq ) aq ,
;L5�
Fax Number
(70 q )
e-mail Address
.. 11
D L C�! 9 (.1 Y
V @
2. Location of facility producing discharge: � -
Check here if same as above ®
PP R 3 2 010
Street Address or State Road
City
POINT SOURCE BUALITY
State / Zip Code
INCH
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 ORC)
Name 4
Mailing Address
City
State / Zip Code
Telephone Number ( )
Fax Number ( )
4. Ownership Status:
Federal ❑ State ❑ Private
5. Type of treatment plant:
Public ❑
Page 1 of 3
C-WTP 03/05

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
14. Is this facility located on Indian country? (check one)
Yes ❑ No R
IS. Additional Information:
Provide a schematic of flow through the facility, include flow volumes at all points in
the treatment process, and point of addition of chemicals.
Solids Handling Plan
16. NEW Applicants
Information needed in addition to items 1-15.
New applicants must contact 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.
Printed e Perm Signing Title
Signature of
_Z
Date
n
North Carolina General Statute 143-215.6 (b)(2) provides that: Any person who knowingly makes any false
statement representation, or certification in any application, record, report, plan, or other document files or
required to be maintained under Article 21 or regulations of the Environmental Management Commission
implementing that Article, or who falsifies, tampers with, or knowingly renders inaccurate any recording or
monitoring device or method required to be operated or maintained under Article 21 or regulations of the
Environmental Management Commission implementing that Article, shall be guilty of a misdemeanor punishable
by a fine 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 fine of not more than $25,000 or imprisonment not more than 5 years, or both,
for a similar offense.)
Page 3 of 3
C-WTP 03/05

Sprinkle, Dina
From: Sledge, Bob
Sent: Tuesday, January 19, 2010 11:40 AM
To: Sprinkle, Dina
Subject: FW: Notice of Violation: NOV-2010-LR-0007
Hi Dina,
All the contact information we have in BIMS for the owner, facility and permit of NC0088684, Daniel Stowe Botanical
Garden, in Gaston County is in the name of Jerry Wood. Mr. Wood left the facility last November. Mr. Eric Woodward
has taken his place. Contact information for him can be found within the entirety of this e-mail exchange. Can you
update out contact information, switching all references to Mr. Wood to Mr. Woodward?
Thank you,
From: Jim Summey [mailto:[e-mail]]
Sent: Friday, January 15, 2010 7:16 AM
To: Sledge, Bob
Subject: RE: Notice of Violation: NOV-2010-LR-0007
Bob,
The contact info for Eric Woodward would be the same mailing address as mine. His direct phone line is 704-829-1254.
Thank you for your assistance in getting us back on track. Eric is our Facilities Supervisor and works under me as a
division of the Grounds Department. He will be responsible for the maintaining of the RO system and the reporting of
the same.
Thanks,
Jim Summey
From: Sledge, Bob [mailto:[e-mail]]
Sent: Friday, January 15, 2010 6:41 AM
To: Jim Summey
Subject: RE: Notice of Violation: NOV-2010-LR-0007
Hi Mr. Summey,
Thank you for responding so promptly to our (unpleasant) correspondence. I'm sorry I wasn't around to take your call
yesterday. They allow me to work an unorthodox schedule around here and I had already left a meeting and headed out
to pick up kids from school when you called.
I'll try to call you later on today. I will also correspond with Mr. Woodward and get him the forms. We'll get reporting
back on track and make our data system computers happy.
One thing we'll need to do is to update our contact information for the facility. Should permit and compliance issues be
directed to you or to Mr. Woodward? If it's you, can we use the contact information you have with your e-mail? If it's
Mr. Woodward, can we get information that would allow us to contact him directly?
Thank you,
:..

From: Jim Summey [mailto:[e-mail]]
Sent: Thursday, January 14, 2010 4:19 PM
To: Sledge, Bob
Cc: Eric Woodward
Subject: Notice of Violation: NOV-2010-LR-0007
Bob,
We here at Daniel Stowe Botanical Garden just received the notice of violation on out monitoring reports. The person
who was responsible for these reports is no longer employed by the Garden. Mr. Wood left around the middle of
November. I have looked thru his old files and can not find the template for the report. I did find copies of his previous
reports. We have now hired a new Facilities Supervisor who is Eric Woodward. He will be filing the reports in the future.
If you could please email us the required forms, we will complete them and get them turned in. Eric's email address is
[e-mail]. I am sorry this report fell thru the cracks during this transition, and apologize for the delay.
Please feel free to contact me if there are other items that need addressing or other info in this matter.
Thank you for your time on this matter,
Jim Summey
Director of Grounds
Daniel Stowe Botanical Garden
6500 S. New Hope Rd.
Belmont, N.C. 28012
Email- [e-mail]
Phone- 704-829-1261 office; 704-691-4589 cell
Fax — 704-829-1240
2

Belnick, Tom
From: Belnick, Tom
Sent: Friday, September 04, 2009' 12:22 PM
To: [e-mail]
Subject: RE: NCO088684 Daniel Stowe Botanical Garden
Attachments: boiler 2009_FINAL.pdf; NC0088684.pdf
Permit + Permit Modification attached within NC0088684, and permit Boilerplate attached as separate pdf.
Tom Belnick
Supervisor, NPDES West Program
NC DENR/Division of Water Quality
1617 Mail Service Center, Raleigh, NC 27699-1617
[phone]; fax [phone]
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties.
From: Diuguid, Bill
Sent: Wednesday, September 02, 2009 2:07 PM
To: Belnick, Tom
Cc: [e-mail]
Subject: NCO088684 Daniel Stowe Botanical Garden
Tom Belnick:
The Daniel Stowe Botanical Garden, Belmont, NC, WW permit NC0088684, issued 1/23/08 would like a copy of their
permit. Their email address is: [e-mail] and phone number is 704-829-1290 if you need to talk to them.
Thanks.
Bill D.
Bill Diuguid, AICP, Stormwater Planner
Stormwater Permitting
NCDENR Div. of Water Quality
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Phone: [phone]
Fax: [phone]
Website: htto://h2o.enr.state.nc.us/su
Please note: niv e-mail address has changed to hill.diu ;uid_(t�ncdenr.� o�
E-mail correspondence to and from this address may be subject to the
North Carolina Public Records Law and may be disclosed to third parties.