NC0003450_FY 2018-19_20190701

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t. Article Addressedto:
D.
NC Division of Water QL#, #y
Central Files
1617 Mail Service Center
Raleigh, NC 27699-1617
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AUG 1 2019
2. Article Number (Trengter from serv/Lg labeq
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7015 0640 0006 0401 3539 arr$500e°Reenmteaoenvery
i Ps Form 3811, July 2015 PSN 7530-02-000-9053 Domestic Return Receipt

20is
Annual Report for Wastewater Treatment Plan
For Town of Wallace
NPDES Permit # NC0003450
Town Manager: Ralph Clark ORC: Brent M. Dean
Public Works Director: Gerald F. James Backup ORC: Lisa Cottle
Contact Person: Gerald F. James
316 E. Murray Street
Wallace, NC 28466
Phone No,: 910-285-2812
The Town of Wallace operates a 5.42 MGD waste water treatment plant on Old Wilmington Rd.
southeast of the town. We discharge into the Rockfish of the Cape Fear river basin. The plant consists
of the following equipment, a mechanical spiral screen and vortex grit removal, Influent transfer
basin with four (4) variable speed pumps, three (3)1.87 MG concrete Sequencing Batch Reactor
(SBR) basins with fine bubble diffusers, floating mixer, floating decanter and two (2) sludge transfer
pumps and controls. Five (5)1,443 sefin blowers. One (1) 230,000 gallon post aeration basin with
floating aerator. Two (2) tertiary disk filters, two (2) UV disinfection channels with three (3) UV
modules in each channel. Effluent basin with four (4) variable speed pumps and controls. One (1)
1.87 MG concrete aerobic sludge digester with three (3) 900 sefin blowers. Two (2) 330,00 gallon
concrete sludge thickening basins with one (1) sludge transfer pump and floating decanter in each.
One (1) 2,250 kW emergency generator with automatic transfer switch for backup power.
During 2018 there were reportable NPDES violations at the wastewater plant. Collection system
violations are reported on the Collection Annual Performance Report.
Violations: See Attached Sheet
Notification:
The Town of Wallace customers were informed by a notice in the Wallace Enterprise
newspaper that this report was aua lable at Town hall.
Plant Performance For
Town of Wallace

YEAR;
FLOW
(MOD)
OUT
BOD IN
(ppm)
BOD OUT
(ppm)
ss
IN
(ppm)
SS
OUT
(Ppm)
Fecal
Coliform
OUT
(100m1)
NPDES
PERMIT
LIMITS
5.42
Summer 5.0
Winter 10.0
30
200 month
400 week
July 18
1.545
101.9
4.2
100.7
4.3
2.1
AUG 18
1.553
81.3
2.5
72.6
5,5
L5
Sept 18
1.818
100.2
2A
80.8
7.9
8.7
OCT 18
1.252
113
4A
86.2
2L6
6.9
NOV 18
1.760
92.1
6.3
71.3
22.4
2.8
DEC 18
2.216
68.3
M
71.4
15.7
2A
JAN 19
1.770
109.1
6.7
128.1
1944
2.5
FEN 19
1.610
113.3
5.1
118.3
16.2
3.6
MAR 19
1.667
117.8
6.2
145.2
19.1
6.0
APR 19
1.920
102.6
7.3
119.7
16.6
48.7
MAY 19
1.317
163.5
6
192
20.1
20.8
June 19
1,275
129.9
5A
173.2
20.8
10.5
YEARLY
AVH.
1.641
107.7
7.3
113.3
9.7
YEARLY
MAX.
2.216
163.9
7.3
173.2
22A
48.7
YEARLY
MIN.
1.252
68.3
2A
71.3
4.3
L5
Attach additional pages, if necessary, for other parameters. (I ppm is equivalent to I mg/t)

Plant Performance Form cont'd. Plant Name Town of Wallace
YEAR;
NH3-N Out
(ppm)
1?O4-P Out
(ppm)
NPDES
PERMIT
LIMITS
Summer 1.0
Winter 2.0
July 18
L6
AUG 18
1.5
Sept 18
0.15
OCT 18
0.19
3.64
NOV 18
0.35
1.23
DEC 18
0.18
JAN 19
0.17
1.35
FEB 19
1.16
2.28
MAR 19
0.02
1.41
APR 19
1.0
1.54
MAY 19
2.1
4.45
June 19
0.705
2.82
YEARLY
AVE.
0.76
2.34
YEARLY
MAX.
2.1
4.45
YEARLY
MIN.
0.02
1.23
Attach additional pages, if necessary, for other parameters. (1 ppm is equivalent to 1
mglL)

• July 2018 — Exceeded NH3 permit limits for week 0 and monthly.
• August 2018 — Did not collect monthly Effluent nutrient samples.
• September 2018 — Did not collect monthly Effluent nutrient samples.
• December 2018 — Did not collect monthly Effluent nutrient samples.
• April 2019 — Exceeded BOD permit limits for week #3, 94, #5 and monthly
limit, NH3 over monthly permit limit.
• May 2019 — Exceeded BOD and NH3 monthly permit limits.
• June 2019 — Exceeded BOD monthly permit limit.