WQCS00027_NOV-2020-DV-0463 Response_20201118

Roanoke Rapids Sanitary District
November 18, 2020
Mr. Scott Vinson, Regional Supervisor
Water Quality Regional Operations Section
Raleigh Regional Office
1628 Mail Service Center
Raleigh, NC 276994628
P.O. Box 308
1000 Jackson Street
Roanoke Rapids, NC 27870
[phone]
Fax: [phone]
www.rrsd.ore
CERTIFIED MAIL0 7005 3110 0001 6339 2081
RETURNED RECEIPT REQUESTED
Re: Notice of Violation -Tracking Number: NOV-2020-DV-0463
Collection System Permit Number: WQCS00027
Roanoke Rapids Sanitary District (RRSD)
Halifax County
Dear Mr. Vinson,
Please be advised that ongoing remedial action is being taken to correct the violations in the collection
system resulting in the referenced NOV received October 28, 2020. Please note each included incident as
reported in BIMS, press releases and corresponding publications, as required and transmitted under
separate cover.
Roanoke Rapids Sanitary District (RRSD) recently discussed remedial actions to study the extenuating
factors leading to spills at these incident locations; which are associative to each other and predicated on
rainfall intensity, duration and ground water levels related to wet weather conditions as illustrated by the
attached basin data. RRSD held a project kickoff meeting with its consultant on November 5" to discuss
project Scope of Work, Schedule, and outcomes related to their proposal (submitted to the Department
under separate cover). (See attached Meeting Agenda.)
We trust our actions are deemed adequate and prudent and will result in a favorable penalty assessment in
order that more local funds maybe committed to a mutually satisfactory resolution in this process.
Roanoke Rapids Sanitary District gratefully appreciates your time and consideration in this matter.
Should you require additional information, please do not hesitate to contact us.
Very Truly Yours,
R. Danieley Brown, E.
Chief Executive Officer
attachments.
cc: Gregory Browning, Chairman, Letter Only
David Scott, W/ Enclosures
Gregg Wilson, Letter Only
File
NOV-2020-DV-0463.Response0917 2920
Page 1 of 1

Wilmington District Water Management Weekly Status Report - 21 September 2020
Weather Summary:
Most of the District received at least 2" of rain from the remnants of Hurricane Sally last week, with much of the
Roanoke Basin receiving 3.5" of rain. Conditions have been mostly dry since last Friday, with little or no rain
expected through the end of this week. Increased rain chances this weekend and into next week. Longer term, the
recently released October and Oct -Nov -Dec outlooks call for near -normal precip (along with above -normal temps).
Tropical Weather Outlook: Tropical activity remains high; however, no signcant impacts to the District are currently
forecast. Tropical Storm Beta is expected to track along the Texas coast over the next few days. A disturbance
located over southeastern Florida has a chance of development later in the week. Hurricane Teddy is expected to
remain east of Bermuda.
Reservoir Summaries:
Reservoir
21-Sep-20
0800 Elev
ft-msl
Guide
Curve
ft-msl
Forecast *
28-Sep
Elevation
ft-msl
Average Net Inflows
Rainfall at Dam
7-day
cfs % median
Sep
cfs % median
7-day
inches
Sep
inches
Falls
252.60
251.5
251.6
1171 1010%
559 482%
2.68
4.82
Jordan
217.62
216.0
216.1
2387 508%
1506 335%
2026
2.53
Scott
1030,68
1030.0
1030.1
1184 299%
1021 258%
2.01
4.23
Kerr
302.40
299.5
300.0
14256 520%
8512 310%
4.81
8.69
Philpott
971.98
1 971.8
1 971.8
1 369 (295%)
274(219%)
1 3.70
5.99
"NOTE: Forecast elevations do not include any future rainfall.
Reservoir
Current
Flood
Storage
% Remaining
Current
Water
Quality
% Remaining
Forecast
80%
WQ
Remaining
Forecast
60%
WQ
Remaining
Current
Water Supply
or Power Pool
% Remaining
Forecast
80%
WS or PP
Remaining
Forecast
60%
WS or PP
Remaining
Falls
94
100
100
Jordan
96
100
100
Scott
99
100
Kerr
92
100
Philpott
100
94
NOTE: Water Quality, Water Supply, and Power Pool forecasts extend through end of Dec 2020.
* indicates that storage remaining does not drop below indicated threshold by end of forecast period.
Falls: Currently near elev 252.E ft (1.1 ft above guide curve) and at peak. Releases were increased to about 1200 cfs
this morning (Monday) to begin bringing lake levels back down following last week's rain. Flow at Clayton is currently
near 650, but should increase to near 1700 cfs on Tuesday in response to increased releases from Falls.
Jordan: Currently near elev 217.E ft (1.6 ft above guide curve) and slowly falling. Outflow is 3000 cfs and holding to
the later part of this week .Lillington flow is currently 4020 and slowly falling, and Deep River at Moncure is near 795
cfs and falling slowly. Minimum flow target at Lillington is 600+/-50 cfs.
Scott: Currently near elev 1030.5 ft (0.5 ft above guide curve) and falling. Releases are currently near 1250 cfs with
a reduction in flows this afternoon to near 915 cfs. Flow at Wilkesboro is currently near 1560 cfs and will fall to near
1200 cfs in response to the cutback; minimum flow target is 400 cfs.
Kerr: Currently near elev 302.3 ft (2.8 ft above guide curve) and falling. Following heavy rain late last week the
decaration was revised to support 15,000 cfs from Kerr this week. Expect the lake to be below elev 300.8 by the end
of the week. Releases next week are expected to average about 8000-9000 cfs (without additional rain).
Philpott: Currently near elev 971.9 ft (0.1 ft above falling guide curve). Sluice gate releases were reduced to near 220
cfs this afternoon (Monday). Releases will be reduced to 40-50 cfs for much of the day on Tuesday to accommodate
work i11 tailrace area. [Hydropower units out of service until further notice.]

2/9/2018
NC Operational Modes
NC Operational Modes
Roanoke Rapids and Gaston Power Stations
Our Roanoke Rapids and Gaston power stations operate cooperatively and in conjunction with the U.S. Army Corps
of Engineers (USACE) Kerr Dam. The USACE operates the Kerr reservoir according to its Rule Curve. In using the
rule curve, the Kerr provides us with a weekly volume of water (weekly declaration) to be released from the three
Jams to the lower Roanoke River.
We are required by our FERC operating license to maintain license -prescribed lake levels and certain downstream
flows from the Roanoke Rapids Dam,
The Roanoke Rapids Dam always operates with a continuous release (minimum flow) from the dam to the lower
Roanoke River. The Gaston Dam operates in an on/off mode. The operating modes described below will affect the
total flow released from Gaston, but except in the case of high flood flows, it will operate in an on/off manner.
The Roanoke Rapids and Gaston power stations have four distinct modes of operation, as described below. Modes
are dictated by river conditions or season.
NORMAL OPERATIONS i
Water released from Roanoke Rapids Dam is used for electric power generation to the greatest extent possible, limited
only by the hydraulic capacity of the power station (20,000 cfs). Power generation is scheduled to meet the electric
power requirements of the Dominion Energy Virginia and Dominion Energy North Carolina customers, which vary
significantly throughout the day and from day-to-day. Flow release may vary from about 2,000 cfs to 20,000 cfs. Large
and sudden changes in flow release may occur at any time.
During normal operation Lake Gaston water levels are typically maintained between elevations 199 to 200 feet.
Minimum flows from Roanoke rapids during normal operation:
December 1 -January 15, Kerr declaration < 6,000 cfs 2,000 cfs
December 1 - January 15, Kerr declaration > 6,000 cfs 2,500 cfs
January 16 - February 29, Kerr declaration < 6,000 cfs 2,500 cfs
January 16 - February 29, Kerr declaration > 6,000 cfs 3,000 cfs
June 16 - June 30 2,800 cfs
July 1 - September 15 2,000 cfs
September 16 - November 15 1,500 cfs
November 16- November 30 2,000 cfs
DROUGHT FLOW OPERATION >
Drought flows released from the Roanoke Rapids Dam are determined in consultation with the US Army Corps of
Engineers (Corps) and the North Carolina Department of Water Quality (DWQ). These flows will be determined when a
drought has been declared in the Roanoke River Basin by the Corps and DWQ,
https://www.dominionenergy.com/community/lakes-and-recreation/�/link.aspx?_id=C900ECE42030432EB0781D5F12E3226C& z=z 1/2

"�>pblu
NC Operational Modes
At this time, Dominion Energy North Carolina will cease its load following operations at the Roanoke Rapids Dam and will
discharge water to the lower river per the consultation. Minimum flows during droughts stated in Dominion Energy's
FERC license are 2000 cfs for all months except September through November when minimum drought flows are 1500
cfs.
FISH SPAWNING OPERATION
During the anadromous fish spawning season (March 1 -June 15), flow released from Roanoke Rapids Dam is regulated
to provide adequate downstream flow for spawning success. A constant sustained flow with little variation is desirable.
Toward the weekend extra water may be stored in Lake Gaston (between elevations 200 and 201 feet) for weekend
release.
The recommended flow regime is:
Period Target to (cfs), Lower Limit (cfs), Upper Limit (cfs).
March 1 - 31 * Average of Kerr's weekly declaration 31500
April 1 - 15 81500 61600 13,700
April 16 - 30 71800 51800 111000
May 1 - 15 61500 41700 9,500
May 16 - 31 51900 41400 91500
June 1 - 15 51300 4,000 91500
*During March, Dominion may run peak flows on five separate days.
FLOOD CONTROL OPERATION �
Floodtime flow releases from Roanoke Rapids Dam are under direction of the U.S. Army Corps of Engineers. Release
rates are primarily governed by Kerr Reservoir water level and inflow.
During flood control operation, a portion of the 3 feet of Lake Gaston flood storage (between elevations 200 and 203 feet)
may be used.
Guidelines for flood releases relative to Kerr Reservoir water level and inflow are:
Kerr Reservoir Water Level (feet), Release (cfs),
300 - 312 Up to 20,000
312 - 315 25,000
315 - 320 35,000
320 - 321 Greater of 85% of inflow or 35,000
> 321 Greater of 100% of inflow or 35,000
Copyright ©2017 Dominion Energy, Inc.
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Wilmington District --US Army Corps of Engineers
---------John
H.
Kerr
Information---------
Island
Guide
JHK
Total
Creek
2400 Curve
Rain
Daily
Daily
Gross
2400
Date Elev Elev
fall
In -flow
Out -flow
Gen.
Elev
NGVD NGVD
Inches
CFS
CFS
MWH
NGVD
Lake Gaston
-Information-
Daily
2400 - Out-
Elev Flow
NGVD CFS
Roanoke Rapids
Information -
Daily
2400 - Out -
Flow
NGVD CFS
1-Sep 20
300.99
299.5
3.37
11059
5458
946.1
267.9
199.78
8900
131.6
9371
2-Sep-20
301.22
299.5
0
14188
8210
1422.9
265.5
200,03
6508
130.1
10466
3-Sep-20
300.98
299.5
0
8688
14921
2561.2
262A
199.9
14558
131.3
12736
4-Sep-20
300.73
299.5
0
7689
14054
2442
257.9
199.89
14242
131.9
13807
5-Sep-20
300.74
299.5
0
3974
3719
642.7
258.1
199.6
5492
131.1
8275
6-Sep-20
300.55
299.5
0
2755
7592
1295.6
258.3
199.72
6025
130.5
7678
7-Sep-20
300.4
299.5
0
3934
7753
1350.5
258.5
199.88
6058
130
7602
8-Sep-20
300.2
299.5
0
3521
8613
1481.2
258
199.81
8682
130.6
9283
9-Sep-20
299.97
299.5
0.32
3046
8881
1517.1
258.2
199,65
9683
131.1
9031
10-Sep-20
299.71
299.5
0.02
2680
9116
1551.2
258.3
199,64
9025
131.3
9918
11-Sep-20
299.56
299.5
0
3025
6738
1141.9
258.5
199.88
5458
131
7079
12-Sep-20
299.53
299.5
0.17
2144
2887
491.9
258
199.97
1858
130.8
2577
13-Sep-20
299.57
299.5
0
3744
2754
464
258.2
199.89
3258
131.3
2599
14-Sep-20
299.15
299.5
0
2062
12459
2107.1
258.3
199.78
12150
131.8
11817
15-Sep-20
299.17
299.5
0
3128
2633
445.8
258A
199A5
5433
131.3
7963
16-Sep-20
299.22
299.5
0
2825
1587
268.3
258.5
199.35
2258
130.5
4475
17-Sep-20
299.63
299.5
0.28
13067
2918
500.5
257.8
199.91
2783
128.3
8504
18-Sep-20
300.85
299.5
4.53
30869
68
7.7
266.5
200.2
17192
131
14377
19-Sep-20
302A
299.5
0
32564
68
7.9
264.2
199,66
6300
129.5
10654
20-Sep-20
302.39
299.5
0
15279
7559
1354.6
260.8
199.63
8275
128.5
10454
21-Sep-20
302.09
299.5
0
7263
15249
2671A
260
199.88
14342
128.7
13818
22-Sep-20
301.84
299.5
0
5666
12224
2155.3
259.2
1993
13625
128.4
14157
23-Sep-20
301.48
299.5
0
3876
13241
2331.7
258.3
199.66
12992
127.8
14069
24-Sep-20
300.94
299.5
0
2731
16746
2938.5
258.2
199.77
15708
128.9
14168
25-Sep-20
300.83
299.5
0.06
5186
7987
1384.8
258.5
199.39
13342
128.8
14239
26-Sep-20
300.43
299.5
1.12
6815
16999
2974.2
258.5
199.81
13425
128.6
14219
27-Sep-20
300.63
299.5
0
15241
10149
1758.3
260.1
199.54
12567
127.9
14058
28-Sep-20
300.33
299.5
0
9447
17085
2986
258.2
200.03
13475
129.3
10909
29-Sep-20
?MISST
299.5
0
?MISST ?MISST
?MISSTR
?MISSTR
?MISSTR
?MISSTR
?MISSTR
?MISSTR
30-Sep-20
300.53
299.5
?MISS
9676
5348
940.7
260.1
199.78
7350
128.3
13950
1-Oct-20
300.97
299.44
0
12722
1519
263.8
259.6
199.55
0
128A
4537
2-Oct-20
301.15
299,37
0
7340
2674
462.9
258.1
199A7
4585
128.8
3514
3-Oct-20
300.9
299.31
0
6241
12689
2239.9
258.4
199.66
11002
128.4
11630
4-Oct-20
300.59
299.24
0
4866
12759
2250.3
258.3
199.84
11002
128.6
11631
5-Oct-20
300.25
299.18
0
3744
12401
2180.5
258.1
199.65
14210
129.6
12657
6-Oct-20
299.81
299,12
0
2771
13839
2422.1
258A
199.66
14210
130.4
12800
7-Oct-20
299.31
299,05
0
3711
16088
2821.8
258.6
?MISSTR
?MISST
?MISSTR
?MISST
September
9.87
8142.828,
Note: ?MIS,
?MISS, 901,
and values of-99 indicate
missing
data
The Wilmington
District
assumes
no responsiblity
for the accuracy
nor the dependability
of
the above
data. Data
is provided "as
is".

10/6/2020 Status of John H. Kerr
r r F
ifff itl, �L 1,.n,in
US Army Corps of Engineers
Wilmington District Water Management
Home I Daily Report I Project Status IUSGS - NC VA NWS River Forecasts Weather Recreation
316
315
314
313
312
311
310
309
308
307
306
306
304
E 303
4� 302
2 301
300
M 299
298
297
296
295
294
293
292
291
290
289
288
287
286
Status of John H. Kerr
John H Kerr Lake Level Forecast -- 05 October 2020
(Based on 90% of Monthly Median Inflows)
I I I
I I I I
I I ( I I I
Recent Inflows US °/o Monthl Median
7-day average 8,499 2�
October 67178 298%
I I I I I I
I I I I
I I I I
I I I I
I I I I
I I 1 I I I I I
I
I I
I I i
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I I I I I
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I I I I I
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I I
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I I I
I
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I
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I
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1 I 1 1 1 1 1 `•
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1
1 41 1I r �1
Guide Curve
January2019 - December 2019
--- Forecast Kerr Lake Level
Recorded Kerr Lake Level
- DrougMWarning /Interchange Curve
Bottom of Dependable Pourer Capacdy Pod
I
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I I I I I
I I I I I I I I
I
i
I I i i
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i
Generally expectedGimaticconditionsarereilectedlnlakelevelforecasis;
however, actual lake levels may vary significantlyfrom forecast levels
shown due to future rainfall events and actual hydropower operations.
U) N (D U7 m N (p CD � N N u) m co 00 CV (D O
N N � N N N N N N Ci]
https://epec.saw.usace.army.mil/jhk_summ.htm 1/2

10/6/2020
40000
38000
36000
34000
32000
30000
28000
26000
24000
b 22000
20000
18000
16000
14000
12000
10000
8000
6000
4000
2000
0
Status of John H. Kerr
Monthly Average Inflows to John H. Kerr
Note: Number above bar indicates rank for that
month in 90-91 years of inflow record.
❑POR Ivtonthty Median Inflow
❑ Ivlonthty Average Inflowsfor 2019
■ Monthly Average Inflowsfor 2020
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Jan Feb Mar Apr May Jun Jul Aug Sep
V 111 V\Q I��i 1I VIM �i1 VIJ LIIVYlIV 11 VIJ�
Oct Nov Dec
Contact Us
Accessibility Link USA.gov
FOIA Disclaimer
Information No Fear Act
Quality Act Privacy &
hops://epec.saw.usace.army.mil/jhk_summ.htm 2/2

MEETING: Project I<icl<off
PROJECT: Roanoke Rapids Chockoyotte Creek SS Crossing/
Sub -Basin A &Roanoke River Outfall Study
DATE OF MEETING: November 5, 2020
LOCATION: Roanoke Rapids Sanitary District Office
TIME: 1:00 pm — 2:30 pm
1. Introductions
a. FNI
i. Bryan Jann (PIC) — 817.914.1218 (cell), [e-mail]
ii. Bill Keaton (PM — Chockoyotte Creek Crossing) — 865-310-9215 (cell),
[e-mail]
Brian White (PM — Sub Basin 'A' Evaluation) — 919,606.4275 (cell),
[e-mail]
b. Roanoke Rapids Sanitary District
i. Dan Brown — 252.537.9137 [e-mail]
ii. Justin Blackmon — 252.537.9137 [e-mail]
2. Project Overview, Goals and Expectations
a. Chockoyotte Creel< sanitary sewer crossing
b. Sub Basin 'A' Evaluation
3. Chockoyotte Creek
a. Scope of Work
i. Evaluate Alternatives
ii. Topographic Survey
1, Easement Preparation
iii. 60%, 90% and Final Plans and Specifications
iv. Permitting
v. Bid Phase - RRSD
vi. Construction Phase - RRSD
vii. Record Drawings
b. Preliminary Schedule

i. Preliminary Alternatives —Early December 2020
ii. 60% Submittal — Early January 2021
90% Submittal — Late January 2021
iv. Final Submittal — Mid February 2021
4. Sub Basin 'A' Evaluation
a. Scope of Worl<
L Data Collection
ii. Flow Monitoring
iii. Desktop Analysis
1. Belmont Pump Station
2. Roanoke River Outfall
iv. Develop Existing Sewer Flows
v. Hydraulic Modeling
vi. Technical Memorandum
b. Preliminary Schedule
i. Draft Technical Memorandum Draft —May 2021
5. Questions and Open Discussion