NC0021644_Response to Notice_20181219

7
TOWN OF LA ("RANGE
203 S. CENTER ST • PO BOX 368
LA GRANGE, NC 28551
December 19, 2018
Mr. Stewart White, Environmental Specialist I
Water Quality Regional Operations Section
Washington Regional Office
Division of Water Resources, NCDEQ
943 Washington Square Mall
Washington, NC 27889
252-566-3186
252-566-2201 (FAX) ���Fl�/
WWW.LAGRANGENC.COM F(7/
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RE: Compliance Inspection Report — La Grange WWTP — NPDES WW Permit No. NCO021644
Mr. White:
In response to the finding that the flow in conduit or thru treatment plant exceeds .750 MGD permitted
capacity as noted in the December 12, 2018 Compliance Inspection Report, the Town of La Grange
formally responds with the following:
1. The Town has recorded record rainfall for calendar year 2018, to date in excess of 80" of rain,
nearly 38" of which occurred in the weeks before and during Hurricane Florence.
2. The Town of La Grange has retained the services of Black and Veatch to conduct an extensive
study of the Town's sanitary sewer system in an effort to determine sources of infiltration and
inflow.
3. The Town has submitted a Preliminary Engineering Report and Environmental Report to USDA
Rural Development to seek grant/loan funding to make point source repairs, line or manhole
replacements based on the final study results of the Town's Sanitary Sewer System. The Town
Council has authorized the Town Manager to seek a minimum of $4,000,000-$7,000,000 in
funding to address the infiltration and inflow issues. It is anticipated that the Town will receive
formal funding dpterminatinn in Aori! 2019. If approved. we will move as expeditiously as
possible to eliminate as many of the infiltration and inflow issues as are identified that the
funding will allow.
4. The Town is also in the process of completing approximately $200,000 worth of point source
and manhole replacements to address the worst know infiltration and inflow issues that were
identified in a previous study.
5. The Town has also taken steps to help alleviate/reduce the likelihood that a lift station that
floods during excessive rains will no longer flood.
The Town is working diligently to correct these issues that we can; however, the excessive rainfall in
2018, particularly in recent months, has made this year particularly tough and have dramatically
increased flow thru the plant, and is hopeful that rainfall amounts will return to normal levels soon.
LA
NC Public Power
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Please feel free to contact me should you have any additional questions or require anv4ditional
information. l�
J19. 00,, P/0'
Respectfully, o
John P. Craft
Town Manager

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PERMIT NUMBER NC0021644 OUTFALL: 001 EFFLUENT PERIOD ENDING MONTH 12- 2017
FACILITY NAME Town of La Grange - La Grange W WiP
CITY La Grange COUNTY Lenoir REGION Washington
DMR 12 Month Calculated
PAGE #
00010
00300
00400
00625
00630
31616
50050
50060
deg c
mg/I
su
mgA
mgA
#/loom[
mgd
ug/I
Temperature, Water
Oxygen, Dissolved
pH
Nitrogen, Kjeldahl,
Nitrite plus Nitrate
Colifonn, Fecal MF,
Flow, in conduit or
Chlorine, Total
Deg. Centigrade
(DO)
Total (as N)
Total (as N)
MFC Broth, 44.6 C
thru treatment plant
Residual
12.17
0.75 S(4 k
13.5277778
9.9722222
6.5 - 6.9
1.706
3.156
0
0.3465807 •
18.1666667
11-17
0.75 ^ 5$
17.1052632
6.7105263
6.4 - 7.2
0.58
3.3525
0
•
0.2587 L�
12
10-17
' .
0.75 30
22.4636364
8.45
6.7. 7.2
0.545
3.64
0
0.3056129
12.2727273
Q
9-17
0.75 �O
24.98
7.43
6.3 - 7
2.042
3.088
0
0.4884
13.9
8-17
0.75
26.9043478
7.2
6.7 - 7.3
0.6425
3.4875
0
0.2448387 •
10.826087
7-77
0.75
27.695
7.19
6.9- 7.6
0.77
3.5925
0
0.3094194 •
11.2
6-17
0.75
25.4181818
7.7136364
6.4 - 7.2
0.924
3.54
0
0.3045667
11.0454546
5.17
0.75 C p3
22.2818182
8.1090909
6.1 - 7
1.115
3.135
0
•
0.50270977
17.0909091
4-17
0.75 V' CP
'
19.2473684
8.8421053
6.1 - 6.5
1.2525
2.6775
0
0,4002333
17.0526316
3-17
0.75 s
15.0434783
9.4608696
6.3. 6.8
0.65
3.55
0
0.3535484
12.826087
2-17
0.75 q
14.87
8.585
6.4 - 6.8
0.55
3.665
0
0.3941071
9.8
1-17
0.75 V�
14.285
9.495
6.1 - 7
0.565
3.01
0
0.6667419 •
17.65
Ja�
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sz- stogy-��
.000
oil
q. 51b
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PERMIT NUMBER NC0021644 OUTFALL: 001
FACILITY NAME Town of La Grange - La Grange W W!P
CITY La Grange
EFFLUENT
COUNTY Lenoir
PERIOD ENDING MONTH 12 - 2017
REGION Washington
DMR 12 Month Calculated
PAGE # 1 - 2
CO310
CO530
C0600
C0610
CO665
QM600
OY600
mgA
mg/1
moll
mg/I
moll
Ib/mon
Ibs/yr
BOD. 5-Day (20
Solids, Total
Nitrogen. Total -
Nitrogen, Ammonia
Phosphorus, Total
Nitrogen, Total -
Nitrogen, Total -
Deg. C) -
Suspended-
Concentration
Total (as N) -
(as P) -
Quantity (Monthly)
Quantity (Yearly)
Concentration
Concentration
Concentration
Concentration
12.17
10
30
4
1,6444444
2.5
4.862
0.3322222
1.808
435.659
11-17
10
30
4
0.1421053
0
3.9325
0.0352632
1.6475
254.54
10-17
5
30
2
0.75
0
4.185
0.0163636
2.0675
330.67
9.17
5
30
2
4.385
12.715
5.13
0.3205
2.23
626.874
8.17
5
30
2
0
0
4.13
0.05
2.25
261.432
7-17
5
30
2
0.33
0.55
4.3625
0.044
2.6475
348.989
6-17
5
30
2
1.4363636
0.8909091
4.464
0.1219048
2.392
339.64
5-17
5
30
2
3.8318182
2.7818182
4.25
0.6436364
1.31
552.38
4-17
5
30
2
1.1210526
0.1473684
3.93
0.5768421
1.9725
393.5435
3-17
10
30
4
0
0
4.2
0,0386957
1.142
385.734
2-17
10
30
4
0.445
0
4.21
0.019
0.5975
387.454
1-17
10
30
4
1.455
1.38
3.575
0.395
0.5775
618.105

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