NC0083470_Fact Sheet_20240222

NCDEQ / DWR / NPDES
EXPEDITED FACT SHEET - NPDES PERMIT RENEWAL
NPDES Permit NCO083470
Sydney Deuterman / Compliance & Expedited Permitting Unit / sydney.deuterman&deq.nc. og_v / Jan 2024
FACILITY INFORMATION
Applicant/Facility Name
Town of Jefferson / Attn: Tim Church, Water Resources Dir.
Jefferson Water Treatment Plant
Applicant Address
PO Box 67, Jefferson, NC 28640
Facility Physical Address
879 Don Walters Road, Jefferson, NC 28640
Max, Monthly Avg Flow (MGD)
0.010 MGD
Type of Waste
Filter backwash and decant from sedimentation basin
Facility Class
PC-1
County
Ashe
Permit Status
Renewal
Regional Office
WSRO
STREAM CHARACTERISTICS
Receiving Stream
UT to Naked Creek
Stream
Classification
C: +
Stream Segment
10-1-32
Outfall Lat.
360 25' 01" N
7Q10 - Summer (cfs)
0.13
Outfall Long.
810 25' 39" W
7Q10 - Winter (cfs)
0
Drainage basin
New
30Q2 (cfs)
0.22
Subbasin
05-07-01
Average Flow (cfs)
0
HUC
050500010207
IWC (%)
10.7%
303(d) List
Not Impaired
FACILITY SUMMARY
Jefferson WTP is a conventional water treatment plant with a design potable flow rate of 0.7 MGD and a
maximum, monthly average of 0.010 MGD. The treatment process for raw water consists of mixing with
polyaluminum chloride, flocculation with polymer, gravity settling and mixed media filtration. Backwash is
discharged to parallel sedimentation basins where gravity settling occurs and then discharged to unnamed
tributary to Naked Creek.
The existing treatment components at the water treatment plant are the following:
• Raw water storage pond
• Two (2) mixing chambers
• Two (2) settling basins
• Two (2) filters
• Two (2) 300,000-gallon sedimentation basins in parallel
• Clearwell
Chemical usage consists o£
• Soda Ash
• Orthophosphate
• Polyaluminum chloride
• Cationic dry polymer
• Chlorine
Fact Sheet for Permit Renewal
Jan 2024 - NPDES Permit NCO083470 - Page 1

RENEWAL SUMMARY
This renewal contains the following changes:
• Updated the list of chemicals used for treatment on the Supplement to Cover Sheet.
• Corrected rule citation for the facility classification in A. (1).
• Reduced monitoring for Turbidity to Monthly in A. (1) and removed the footnote, per 2020 WTP
guidance.
• Updated WET testing to Pass/Fail limit per updated WTP guidance. Sections A. (1) and A. (2) have
been updated.
Removed Schedule of Compliance condition and footnote in A. (1) as the deadline for compliance
with Total Copper limits has passed. Facility should be capable of meeting the limits in the permit.
Updated Section A. (3) to reflect current federal requirements for Electronic Reporting of
Discharge Monitoring Reports.
COMPLIANCE HISTORY
Jefferson WTP has no enforcements on record since the permit was originally issued in 1994. The most
recent inspection (June 2023) showed the facility to be non -compliant, noting that the permittee failed to
provide a Corrective Action Plan by November 2021 and a Report of Actions Taken by November 2022.
These were requirements of the Schedule of Compliance condition for Total Copper limits, and an NOV
was sent for these violations of the permit. There were no other NOVs generated during the last permit
cycle.
NCG59 GENERAL PERMIT ELIGIBILITY
• They've passed > 75% of TOX tests within the last 4 years — eligible
• They've passed all TOX tests within the last year - eligible
• Copper limits required based on most recent RPA — ineligible
• Conclusion: Ineligible for NCG59 General Permit.
WHOLE EFFLUENT TOXICITY (WET) TESTING
In accordance with current strategies designating this facility as a conventional water treatment plant to
freshwater, WET testing is required in this permit as Quarterly, Chronic [TGP3B] Pass/Fall Limit with
Ceriodaphnia dubia at an effluent concentration of 10.7%. This facility has passed every toxicity test
except one (April 2020) in the last 4 years. Per updated guidance for conventional water treatment plants,
the WET testing has been changed from monitoring only to a Pass/Fail limit.
REASONABLE POTENTIAL ANALYSIS
A reasonable potential analysis (RPA) was performed for a discharger going to a freshwater stream. A flow
(Qw) of 0.01 MGD was used based on the maximum, monthly average flow between Sept 2020 and Aug
2023.
Based on this analysis, the following permitting actions are proposed for this permit:
• Copper — reasonable potential to exceed water quality standards; keep monthly monitoring with
limits
COMMENTS ON DRAFT PERMIT
• Aquatic Toxicity Branch approves of the draft permit and has no additional comments.
Fact Sheet for Permit Renewal
Jan 2024 - NPDES Permit NCO083470 - Page 2

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Date
1 1/8/2019
2 4/2/2019
3 7/10/2019
4 10/8/2019
5 1 /7/2020
6 4/7/2020
7 7/9/2020
8 10/5/2020
9 1 /5/2021
10 4/6/2021
11 7/6/2021
12 10/7/2021
13 1 /10/2022
14 4/12/2022
15 7/12/2022
16 1 /9/2023
17 4/4/2023
18 7/11/2023
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
REASONABLE POTENTIAL ANALYSIS
H2
Use "PASTE SPECIAL
Effluent Hardness Values" then "COPY" Upstream Hardness
. Maximum data
points = 58
Data
BDL=1/2DL
Results
16.4
16.4
Std Dev.
2.8575
23.1
23.1
Mean
21.1056
17.7
17.7
C.V.
0.1354
26.7
26.7
n
18
20.3
20.3
10th Per value
17.84 mg/L
20.9
20.9
Average Value
21.11 mg/L
20.9
20.9
Max. Value
26.70 mg/L
23.4
23.4
20
20
25
25
18
18
25.4
25.4
17.9
17.9
22.2
22.2
20.8
20.8
18.5
18.5
20.7
20.7
22
22
Date
1 1/8/2019
2 4/2/2019
3 7/10/2019
4 10/8/2019
5 1 /7/2020
6 4/7/2020
7 7/9/2020
8 10/5/2020
9 1 /5/2021
10 4/6/2021
11 7/6/2021
12 10/5/2021
13 1 /10/2022
14 4/12/2022
15 7/12/2022
16 1 /9/2023
17 4/4/2023
18 7/11/2023
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use "PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
Data
BDL=1/2DL
Results
21.4
21.4
Std Dev.
3.7404
19
19
Mean
19.0500
11.8
11.8
C.V.
0.1963
19.3
19.3
n
18
16.7
16.7
10th Per value
14.62 mg/L
16.1
16.1
Average Value
19.05 mg/L
14.2
14.2
Max. Value
29.00 mg/L
14.8
14.8
17.5
17.5
20.5
20.5
19.7
19.7
22.9
22.9
19.8
19.8
19.8
19.8
20.7
20.7
19.8
19.8
19.9
19.9
29
29
-1-
83470 RPA 2023, data
10/12/2023

REASONABLE POTENTIAL ANALYSIS
Pall
Use "PASTE SPECIAL
Copper
Values" then "COPY"
. Maximum data
points = 58
Date
Data
BDL=1/2DL
Results
1
1/8/2019
86
86
Sid Dev.
36.9988
2
4/2/2019
10
10
Mean
17.7421
3
7/10/2019
37
37
C.V.
2.0854
4
12/11/2019
<
1
0.5
n
43
5
1/7/2020
25
25
6
4/7/2020
<
1
0.5
Mult Factor =
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7
7/9/2020
18
18
Max. Value
167.00 ug/L
8
10/5/2020
3
3
Max. Pred Cw
202.07 ug/L
9
11 /24/2020
<
1
0.5
10
12/1/2020
<
1
0.5
11
1 /5/2021
1.5
1.5
12
2/23/2021
1
1
13
3/5/2021
2.71
2.71
14
4/6/2021
2.96
2.96
15
5/13/2021
3.43
3.43
16
6/7/2021
4
4
17
7/6/2021
6.81
6.81
18
8/2/2021
3.27
3.27
19
9/14/2021
2.53
2.53
20
10/7/2021
140
140
21
11 /9/2021
4.5
4.5
22
12/7/2021
<
5
2.5
23
1/10/2022
<
5
2.5
24
2/25/2022
<
5
2.5
25
3/8/2022
167
167
26
4/12/2022
<
5
2.5
27
5/25/2022
22.3
22.3
28
6/21 /2022
16.2
16.2
29
7/26/2022
<
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10
30
8/23/2022
<
20
10
31
9/17/2022
<
5
2.5
32
10/19/2022
<
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2.5
33
11 /22/2022
<
5
2.5
34
12/13/2022
<
5
2.5
35
1 /9/2023
<
5
2.5
36
2/20/2023
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1.7
37
3/21 /2023
<
5
2.5
38
4/4/2023
11
11
39
5/9/2023
<
10
5
40
6/6/2023
109
109
41
6/26/2023
22
22
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7/11/2023
<
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8/28/2023
<
10
5
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
83470 RPA 2023, data
- 2 - 10/12/2023

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From:
Nicholson, Mollv
To:
Deuterman. Svdnev
Cc:
Moore. Cindv
Subject:
RE: DRAFT Permit Renewal - Jefferson WTP (NC0083470)
Date:
Tuesday, December 12, 2023 3:13:19 PM
Hi Sydney,
This tox sections in this permit look good.
Best,
Molly Nicholson
Environmental Specialist II - Compliance and Enforcement
Aquatic Toxicology Branch
N.C. Division of Water Resources - Water Sciences Section
N.C. Department of Environmental Quality
919-743-8440 Office
molly.nicholsonna deq.nc.g_ov
1621 Mail Service Center, Raleigh, NC 27699-1623
Submit AT Forms electronically to: ATForms.ATB6Ddeq.nc.gov
Please note that this email address has changed
From: Deuterman, Sydney<[e-mail]>
Sent: Tuesday, October 31, 2023 1:34 PM
To: Graznak, Jenny <[e-mail]>; ATForms.ATB <[e-mail]>;
Talbott, Jeffrey <[e-mail]>
Cc: Snider, Lon <[e-mail]>; Moore, Cindy <[e-mail]>
Subject: DRAFT Permit Renewal - Jefferson WTP (NC0083470)
Hello,
The draft permit renewal for Jefferson WTP (NC0083470) is ready for review and comment.
This is a PC -I facility in Ashe County.
Link to Renewal Application: httns://edocs.deq.nc.goy/WaterResources/DocView.as
id=2371826&dbid=0&reno=WaterResources
I'm hoping to submit the draft for Public Notice on November 14, 2023. Please send any
comments to me no later than December 14, 2023.
Thanks,

Sydney Deuterman (she/her)
Environmental Specialist II
Compliance and Expedited Permitting Unit
Division of Water Resources
N.C. Department of Environmental Quality
Office: 919-707-3712
svdneudeuterman(@deq.nc.,gov
1617 Mail Service Center
Raleigh, NC 27699-1617
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
Email correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third
parties by an authorized state official.

STATE OF NORTH CAROLINA
ASHE COUNTY
NCDEQDWR/WATAUGA COUNT
1617 Mail Service Ctr
Raleigh, NC 27699-1617
AFFIDAVIT OF PUBLICATION
Before�e undersigned, a Notary Public of said County and State, duly commissioned,
qu li ,and utho ' d by/law to administer oaths, personally appeared
�1��� �!??�i1U� who being first duly sworn, deposes and says: that
he (she) is an employee of ADAMS PUBLISHING GROUP, LLC, engaged in the publication
of a newspaper known as Ashe Post & Times, published in the city of WEST JEFFERSON
in said County and State, that he (she) is authorized to make this affidavit and sworn statement;
that the notice or other legal advertisement, a true copy of which is attached hereto, was
published in Ashe Post & Times, a newspaper meeting all of the requirements and
qualifications of Section 1-597 of the General Statues of North Carolina on the following dates:
NPDES Wastewater Permit NCO083470
11/22/23
;Ishe Post & Thes
``%t%%lillit,//� i
SGNM C�
OTAR
•' pUBL�G •' :
v d /
n i I I I I %% �/ Notary Public
Vic es�• h, C� — /•
My Commission expires: Gam,-�[7�T eRO
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
NCO083470 Jefferson WTP The
North Carolina Environmental
Management Commission pro-
poses to issue a NPDES waste-
water discharge permit to the
person(s) listed below. Written
comments regarding the pro-
posed permit will be accepted
30 days after the publish date of
this notice. The Director of the
NC Division of Water Resources
(DWR) may hold a public hear-
ing should there be a significant
degree of public interest. Please
mail comments and/or informa-
tion requests to DWR at the
above address. Interested per-
sons may visit the DWR at 512
N. Salisbury Street, Raleigh, NC
27604 to review the information
on file. Additional information on
NPDES permits and this notice
may be found on our website:
https://deg. nc.gov/public-no-
tices-hearings, or by calling
[phone]. Town of Jeffer-
son [PO Box 67, Jefferson, NC
28640] has requested renewal
of permit NCO083470 for Jeffer-
son WTP [879 Don Walters
Road] located in Ashe County.
This permitted facility dis-
charges treated backwash
wastewater to an unnamed trib-
utary to Naked Creek in the New
River Basin. Currently, TSS,
Total Residual Chlorine, and
Total Copper are water quality
limited. This discharge may af-
fect future allocations in this seg-
ment of Naked Creek.
P.O. BOX 1815, BOONE, NC 28607
828-264-6397
This 22nd day of November, 2023
Signature of person making affidavit
and subscribed before me on this 22nd day of November, 2023