NC0023981_Wasteload Allocation_19810810

NPDES DOCUMENT SCANNING: COVER SHEET
NPDES Permit:
NC0023981
Lenoir — Lower Creek WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
201 Facilities Plan
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
August 10, 1981
This document is printed on reuse paper - ignore any
content on the reirerse side

Office to Com
ea
0
+' Location of D.O.minimum (miles below outfall): (i ! � Slope / 0 7 i
K2 (base e, per day, 20°C)•
NPDES WASTE LOAD ALLOCATION
% orwE4 e #— - &) i P
Permit No.: Je7% 2.3Q151
Date: / -i3
Pipe No.: County: eX2-44We.//
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0
0
4-0
N)
ar
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Velocity (fps):
Kl (base e, per day, 20°C) : i T/
Facility Name:
Existing
Proposed
Design Capacity (MGD): Lam• Q Industrial (% of Flow): Domestic (% of Flow):
Receiving Stream: Lowe (12EE/1 Class: Sub -Basin: 03 `0E-3/
Reference USGS Quad: (Please attach) Requestor• "V� I4KKie_ Regional Office 9),,e0
1!�
(Guideline limitations, if applicable, are to be listed on the back of this form.)
Design Temp.: 2 o C- Drainage Area: IL` Avg. Streamflow: - (?(-
7Q10: —7 C `f" 5 Winter 7Q10: 30Q2:
Effluent
Characteristics
Monthly
Average
Comments
IU f-f •--iti
!l r„,g
3
3 0-) 82,_
4---2c Cr ft-crrt��
/oc 10e 6,32, •.
Original Allocation
Revised Allocation
1I
Effluent
Characteristics
Monthly
Average
Comments
Date(s) of Revision(s) /O/"7
(Please attach previous a location)
ared By: v rl a G' Reviewed By:

Form #G01
##96
WASTE LOAD ALLOCATION APPROVAL FORM
Facility Name:
Lower Creek WWTP (City of Lenoir)
County: Caldwell
Regional Office:
Mooresville
Type of Wastewater: Industrial
Domestic
If industrial, specify type(s) of industry:
Sub -basin: 03-08-31
Requestor:
Receiving stream: Lower Creek
Other stream(s) affected:
Cl
Cla
7Q10 flow at point of discharge: 7.0 cfs
30Q2 flow at point of discharge:
Natural stream drainage area at discharge point: 35 mi2
Recommended Effluent Limitations
Qw = 6.0 MGD
BOD5 = 30 mg/1
NH3-N = 11 mg/1
DO = 5 mg/1
TSS = 30 mg/1
Fecal Coliform = 1000/100 ml
pH = 6-9 SU
This allocation is: / /
for a proposed facility
/ / for a new (existing) facility
/W
a revision of existing limitations
/ / a confirmation of existing
Recommended and reviewed by:
Head, Techncial Services Branch
Reviewed by:
Regional Supervisor fyTA
Permits Manager
Approved by:
Division Director
limitations
Wik /eft"
ml
BOD5 raised to 30 mg/1
NH3 lowered to keep
same BODu, also fecal
coliform raised
1000/100
Date:
Date:
Date:
Date: /Q4/
to

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tvJ . 5-. o
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b 0 S_
- z.
D o R. 7
K I 0 , 35 t- �Z 151
K1 =
1=.
6.3s t.S6,3
I•S" I
K►= 2.33
i<2 = 0_91,(s)e)( VV
K2 - o.6, ( ("a)
14 : zo.4
---_ _ too 5 6 T - `7 , S
11-
5
kC .
5" to cS
S Lo

DIVISION OF ENVIRONMENTAL MANAGEMENT
August 11, 1981
MEMORANDUM TO: Forrest Westhall
THROUGH: D. Rex Gleason
FROM: J. Thurman Horne,- 7 -
SUBJECT:
Request for Revi d NPDES Permit
Effluent Limits
City of Lenoir Wastewater Treatment Plant
NPDES Permit No. NC 0023981
Caldwell County, N. C.
As per our telephone conversation, I have enclosed a copy of a waste load
allocation request and a request for revised permit effluent limitations, submitted
by the City's engineer to this Office. I have also enclosed a copy of a memorandum
from Rex Gleason dated July 15, 1981.
Please review this request and advise this Office of your recommendations and,
if appropriate, the suggested revised effluent limitations.
If you have any questions or need additional information, please advise.
JTH:sju
Enclosure
cc: W. S. Ri ddi ck , Jr.
H. Lewis P ri ce

.Q
August 4, 1981
ILLS/O'BRIEN?.: i �-�- -
Siganeitsana•Txt W
it Qum
WWI OLD
Mr. Rex Gleason
NC Divison of Environmental Management
PO Box 950
Mooresville, North Carolina 28115
Subject: Request for Revised NPDES Permit Limits
Permit No. NC-0023981
Lenoir, North Carolina
Dear Mr. Gleason:
d
///1
953.006(34)
Y
On March 12, 1981, the City of Lenoir filed the attached letter requesting revised effluent
limits for Permit No. NC-0023981, Lower Creek Wastewater Treatment Facility, Lenoir,
North Carolina. The request for revised limits was based upon operating data which illustrate
that effluent ammonia nitrogen concentrations are far below permit limits of 13 milligrams
per liter. Day to day operation of the Lower Creek plant is such that the five day BOD of the
effluent is generally less than 30 milligrams per liter, although frequently above the 23
milligrams per liter permit condition. Thus, by making compensating adjustments to increase
allowable BOD to 30 milligrams per liter and reduce ammonia nitrogen to 11.25 milligrams
per liter, more routine compliance with permit standards would be attained.
On behalf of the City, we would appreciate your review of this request and any guidance you
could furnish to assist us. Someone from our office will contact you within the next several
days to review this matter in more detail.
Respectfully submitted,
WILLIS/O'BRIEN & GERE
W. S. Riddick, Jr., P. E.
WSR/jhp
Attachment
cc: Mayor Robert A. Gibbons
Mr. H. Lewis Price
Mr. Lex E. Honeycutt
P 0. Bat 3355
301 East Bc!.::evard
Crrar!otte, NC 28203
704-374-1822

CITY WANACER
H. LEWIS PRICE
r
CITY OF LENOIR
NORTH CAROLINA
March 12, 1981
North Carolina Environmental Management Commission
P . O. Box 27637
Raleigh, North Carolina 27611
Subject: Request for Revised NPDES Permit Limits
Permit Number NC-0023981
.Lenoir, North Carolina
Gentlemen:
jr-rPc
egs.5.06.04)
MAYOR
ROBERT A. GIBBONS
c$TT COUNCIL
G. L. BERNHARDT
C. F. ERWIN
J. S. GREENE
_ _ L. HORTON, JR.
J. E. KENT
`
V • . G. MARTINAT, JR.
t 4• a H. T. TRIPLETT
30°
The City of Lenoir operates the Lower Creek Wastewater Treatment Facility
under NPDES Permit Number NC-0023981. This permit contains effluent limitations
for biochemical oxygen demand and ammonia nitrogen of 23 mg/1 and 13 mg/1,
respectively. .According to our understanding of the methodology used to
establish these two parameters, application of these limits would result
in an ultimate oxygen demand on the receiving stream of 75 mg/1.
The Lower Creek Wastewater Treatment Facility consistently produces an effluent
having ammonia concentration significantly below the permit conditions. There-
fore, we respectfully request that the monthly average limitscontained in
NPDES Permit NC-0023981 for biochemical oxygen demand and ammonia nitrogen
be changed to 30 mg/1 and 11.25 mg/1, respectively. Maximum weekly averages
limits would also be adjusted accordingly.
The City of Lenoir has extensive analytical data confirming that the above
limits can be consistently met by the Lower Creek Wastewater Treatment Facility.
We will be glad to provide this information for your consideration if necessary.
Respectfully requested,
CITY OF A OIR
H. Lewi- Price, Manager
cc: Mayor Robert A. Gibbons
Mr. Lex E. Honeycutt, P.E.
Willis/O'Brien & Gere

DIVISION OF ENVIRONMENTAL MANAGEMENT
July 15, 1981
MEMORANDUM TO: Forest Westhall
FROM: D. Rex Gleason
SUBJECT: Waste Load Allocation for Lenoir's
Lower Creek Wastewater Treatment Plant
Permit No. NC 0023981
Caldwell County, North Carolina
The City of Lenoir has made a request to this Office for modification of
their Permit effluent limitations for BOD and Ammonia at their Lower Creek
Wastewater Treatment Plant. The City has requested that the BOD limitation
be changed to 30 mg/l.
It would appear that the modification could be accomplished by decreasing
the portion of the UOD assigned as NH3 as N.
If you need additional information, please advise.
Attachment