NC0020842_Comments_20180725

,_
MAYOR „,,,,,,,, TOWN MANAGER
DENNIS K. LILES N0”: , PUBLIC WORKS DIRECTOR
,CSO RTy �', DANA D. HILL
MAYOR PRO-TEM
LORRINE B. WASHINGTON �, 9 ASST TOWN MANAGER
COMMISSIONERS _IIII Z��-- +-�'Or FINANCE DIRECTOR
WILLIAM (DONNELL) HAGANS `I o as `:`�� a a a RENEE LOCKLEAR
GERALDINE E. SHACKLEFORD
mg.! a 2. TOWN CLERK
ROBERT L. (BOBBY)TAYLOR, JR. A 0 o LAQUITA DAVIS
ROSA S. WILKES ,,�O,,,,°UNDED\g2,``p CHIEF OF POLICE
,",u„,„,,,,,,,,,, � GORDON HOBBS
•
July 18, 2018
RECEIVED/DENR/DWR
NC DEQ/DWR
Attn: NPDES Unit JUL 2 5 2018
1617 Mail Service Center Water Resources
Raleigh,NC 27699-1617 Permitting Section
Subject: NPDES Permit Renewal
Supplemental Information
Town of Snow Hill
NPDES Permit#NC0020842
Greene County
Dear Permitting Unit: .
The Town of Snow Hill submitted. the renewal application for NPDES #NC0020842 on 19
October 2017. The permit expired on May 31, 2018 but at this time we have not received a draft
permit for review. We are submitting this additional request for a permit modification prior to
permit renewal for your consideration. The current permit requires Upstream/Downstream
monitoring for: temperature, dissolved oxygen (DO) and conductivity. There is also an effluent
monitoring requirement for conductivity. The Town is requesting the following modifications to
the permit:
e Removal of upstream and downstream monitoring requirements. We feel that no useful
data, as it relates to the operation of the WWTP, is gained by monitoring these three
• parameters in the receiving waters. The discharge characteristics cannot be changed in a
manner that will affect the receiving waters. Minimum DO in the effluent is already a
permit condition.
In addition, there are many other environmental influences on the creek between the
upstream and downstream sampling locations to make any correlation to the effect of the
WWTP discharge. The majority of the urban runoff from the Town reaches the receiving
waters in the location between the upstream sampling location and the discharge pipe.
TOWN OF SNOW HILL
908 SE SECOND ST. PO Box 247 SNOW HILL, NC 28580 [phone] FAX[phone]
WWW SNOWHILLNC.COM

The downstream sampling location, the first accessible location, is several miles from the
discharge pipe. Between the two locations is the discharge from another municipal
wastewater treatment plant and the creek is bounded on both sides by agricultural lands.
This acreage includes cropland as well as CFOs. As this area is flat, all drainage ditches
from these areas drain in the creek.
A summary of the data for 2017 is attached. A review of the data does not indicate and
influence of the discharge on the receiving waters.
• Removal of effluent conductivity monitoring from the permit. The influent wastewater at
the WWTP is primarily domestic in nature and comes from commercial and residential
users. There is one small industrial user that processes sweet potatoes. The process
water is captured on-site for separate disposal. Effluent monitoring of conductivity
indicates little change in conductivity over the permit period. Effluent quality is already
monitored via testing for BOD5, TSS and ammonia nitrogen.
We thank you for your consideration in these matters. If you have any additional questions or
comments, please call me at 252/939-5051.
Respectfully,
Dana Hill, Town Manager
Town of Snow Hill

Town of Snow Hill
NPDES#NC0020842
Temp DO Conduct
Up Down Up Down Up Down Eff
17-Jan 10 10 9.1 9.3 57 31 585
7 7 10 10.2 61 66 595
10 11 9.6 9.4 38 42 502
13 13 8.4 5.8 60 58 534
614
17-Feb 11 11 9.7 9.6 38 47 586
12 12 8.5 10.1 95 82 565
11 12 10.3 10.6 74 80 558
15 15 10.1 10 86 88 561
17-Mar 15 15 6.9 7.4 74 82 576
13 15 8.1 8.3 79 90 521
8 8 9.9 9.5 69 75 503
9 10 10.1 9.3 58 66 661
14 15 8.2 7.9 77 84
17-Apr 18 19 6 6 52 62 643
19 20 6.3 5.8 64 66 563
21 21 7.9 9.8 84 103 606
19 18 7.7 7.9 71 75 413
17-May 22 22 4.1 3.8 54 62 356
19 19 4.5 4.8 81 74 688
21 21 5.2 6.3 88 90 738
23 23 5.1 5.3 85 79 599
25 24 5.4 4.9 78 96 663
17-Jun 21 22 6 6.1 67 72 667
27 28 6 5.9 64 52 776
28 28 5.8 6 71 68 536

27 27 5.6 5.5 81 69 715
17-Jul 30 30 5.1 5 128 115 685
30 30 4.7 4.9 120 118 649
28 28 4.6 4.5 115 112 652
26 27 5.8 5.5 88 66 693
17-Aug 25 26 5.7 5.9 89 95 634
25 25 6.3 6 108 92 779
27 28 5.5 5.3 80 75 627
28 28 5.1 5.4 75 75 698
23 24 5.9 6 63 61 686
17-Sep 23 23 6.5 7 69 76 536
24 25 5.2 5.1 101 98 549
25 25 4.4 4.7 108 114 655
23 23 5.9 5.8 122 114 592
17-Oct 21 21 5.9 6 107 114 687
24 25 5.3 4.9 133 127 762
18 18 5.8 7.2 98 115 688
19 19 6.5 7.3 107 110 643
542
17-Nov 16 17 7.4 7 87 90 556
18 18 6.2 5.9 104 99 520
12 12 7.2 7.6 99 122 596
11 11 8.4 8.8 88 97 542
9 10 9.9 9 101 98
17-Dec 11 11 9.4 9.7 89 95 540
6 7 11.4 11.2 63 66 459
10 10 10.8 11 94 83 696
5 6 9.9 10.5 69 76 541