NC0023736_Speculative Limits_19940620

NPDES DOCUMENT SCANNING COVER SHEET
NC0023736
Gunpowder Creek WWTP
NPDES Permit:
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
June 20, 1994
This document is printed on reuse paper - ignore any
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• 4.
Lenoir -Gunpowder Creek WWTP
030833
6/20/94
JMN
Mike Waresak, consultant engineer for the Town called and wanted to know if a toxicity
evaluation would have to be done prior to completion of the EA. I had written in spec letter
(5/25/'94) to Lenoir that because of inconsistencies in the toxicity test that a tox evaluation
may have to be done. I called Matt Mathews and asked who determines when a tox
evaluation needs to be done. He said that the Regional Office is the lead group on this
situation. The Town should start looking at operational changes, look at new industries
that have tied on, etc. He said that a THE -phase I identification procedures are usually
parts of SOCs. The Region will advise the Town that they are subject to NOVs based on
failures of tox test. Matt said that 9 out of 10 times TREs originate as parts of Special
Orders. Sometimes, Town start these evaluations on their own, which is good. He would
think that a Town that has failed 2 of the last 3 tests, and is looking at expanding should
probably do an evaluation. However, sometimes AQ TOX and the Regions differ on when
TREs should be done.
Called Jim Reid of ARO, asked whether the Region would be recommending a THE based
on the Town's recent failures. He said that he did not think that it merited doing one right
now, prior to completion of the EA. A THE could be done at a later time if Town
continued to have problems. Would check with Keith Haynes, ARO toxicity person, and
would call me back if they were going to recommend that it be done. Said that he would
call Mike Waresak back with a response.

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
May 25, 1994
Mr. T.S. Childers, Wastewater Supervisor
Town of Lenoir
P.O. Box 958
Lenoir, N.C. 28645-0958
FPFA
iiif
QE-INJ I
Subject: Lenoir- Gunpowder Creek Wastewater Treatment Plant Expansion
NPDES Permit No. NC0023736
Caldwell County
Dear Mr. Childers:
Your request for speculative effluent limits for the proposed expansion of the
Lenoir - Gunpowder Creek WWTP to 2.0 MGD has been completed by the staff of the
Technical Support Branch. In order to receive final permit limits, a formal application will
have to be submitted to the Division's Permits and Engineering Unit.
It should also be noted that an expansion of more than 0.5 MGD for an existing
facility will require that an environmental document be prepared by the applicant. The
N.C. Environmental Policy Act and its associated rules requires that an environmental
assessment (EA) and Fonsi (Finding of No Significant Impact) be prepared before
application for a permit expansion is submitted. If deemed appropriate, an environmental
impact statement (EIS) might be necessary. Monica Swihart of the Water Quality Planning
Branch can provide further information regarding the EA requirement.
Based on available information, the tentative limits for conventional constituents
are:
Summer Winter
Wasteflow (MGD) 2.0 2.0
BOD5 (mg/1) 30 30
NH3-N (mg/1) 2 4
Dissolved Oxygen 5 5
TSS (mg/1) 30 30
Fecal Coliform (#/100m1) 200 200
pH (SU) 6-9 6-9
Chlorine (µg/1) 28 28
It should be noted that the tentative NH3-N limits are based on protecting Gunpowder
Creek against instream toxicity. North Carolina is evaluating all NPDES dischargers for
ammonia toxicity following the Environmental Protection Agency (EPA) guidance to
protect the waters for an instream criteria of 1 mg/1 in the summer and 1.8 mg/1 in the
winter, under 7Q10 flow conditions.
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

Letter to Mr. Childers
page 2
The Division of Environmental Management (DEM) is now recommending chlorine
limits and dechlorination for all new or expanding dischargers proposing the use of
chlorine for disinfection. An acceptable level of chlorine in your effluent is 28 µg/1 to
ensure protection against acute toxicity. The process of chlorination/dechlorination or an
alternate form of disinfection, such as ultraviolet radiation, should allow the facility to
comply with the total residual chlorine limit.
The instream waste concentration (IWC) at the expanded flow of 2.0 MGD is 52%.
A chronic toxicity testing requirement with quarterly monitoring will remain a condition of
the NPDES permit. The Town may have to conduct a toxicity evaluation because test
results at the current toxicity limit of 38% have been inconsistent. A complete evaluation
of limits and monitoring requirements for metals and other toxicants will have to be
addressed at the time of formal NPDES application. Information concerning these
constituents is not readily available but the Town can assume that effluent limits and/or
monitoring for cadmium, chromium, nickel, cyanide, lead, copper, zinc, and silver will
continue.
It is recommended that instream monitoring for temperature, dissolved oxygen,
fecal coliform, and conductivity be continued. In addition, instream monitoring for total
phosphorus, total nitrogen, chlorophyll a, and pheophytin a, upstream of and in the pooled
area of the Old Millpond should continue to assist in determining whether the Gunpowder
Creek discharge is creating the potential for eutrophication in that waterbody.
DEM is implementing a basinwide water quality management initiative. Our
schedule for the Catawba River Basin is set for 1995. The plan will attempt to address all
sources of point and nonpoint pollutants where deemed necessary to protect or restore
water quality standards. In addressing interaction of sources, wasteload allocations may be
affected. Those facilities that already have committed to high levels of treatment technology
are least likely to be affected.
This information should provide some assistance in your planning endeavors.
Final NPDES effluent limitations will be determined after a formal permit application has
been submitted to the Division. If there are any additional questions concerning this matter,
please feel free to contact Ruth Swanek or Jackie Nowell of my staff at [phone].
rely,
Donald L. Sa
Assistant Chief for
cc: Forrest Westall
Mike Waresak, P.E., McGill Associates
Central Files
WLA File

PRETREATMENT HEADWORKS REVIEW 05/19/94
Discharger.
Receiving stream:
Stream Class:
7Q10:
Design flow:
Actual flow:
Percent industrial:
IWC:
Lenoir -Gunpowder WWTP
Gunpowder Creek
C
2.9
2.0
0.848
25.0%
51.7
cfs
mgd
mgd
NPDES Permit No.:
Subbasin:
Actual Actual Total Permitted Total Observed
Domestic Industrial Actual Industrial Permitted Effluent
Pollutant Standard Removal Load Load Load Load Load Conc.
(ug/1) Eff. (lbs/day) (lbs/day) (lbs/day) (lbs/day) (lbs/day) (ug/1)
Cadmium 2 S 0.00 0.000
Chromium 50 S 0.00 0.000
Copper 7 AL 0.00 0.000
Nickel 88 S 0.00 0.000
Lead 25 S 0.00 0.000
Zinc 50 AL 0.00 0.000
Cyanide 5 S 0.00 0.000
Mercury 0.012 S 0.00 0.000
Silver 0.06 AL 0.00 0.000
Arsenic 50 S 0.00 0.000
Predicted Predicted Predicted
Allowable Effluent Effluent Instream Based on Based on Based on
Allowable Background Effluent Conc Conc Conc ACTUAL PERMIT OBSERVED
Load Conc Conc ACTUAL PERMIT OBSERVED Influent Influent Effluent
(lbs/day) (ug/1) (ug/I) (ug/1) (ug/1) (ug/1) Loading Loading Data
Cadmium 0.05 0 3.871 0.000 0.000 0.000
Chromium 1.14 0 96.774 0.000 0.000 0.000
Copper 0.16 0 13.548 0.000 0.000 0.000
Nickel 2.00 0 170.323 0.000 0.000 0.000
Lead 0.57 0 48.387 0.000 0.000 0.000
Zinc 1.14 0 96.774 0.000 0.000 0.000
Cyanide 0.11 0 9.677 0.000 0.000 0.000
Mercury 0.00 0 0.023 0.000 0.000 0.000
Silver 0.00 0 0.116 0.000 0.000 0.000
Arsenic 1.14 0 96.774 0.000 0.000 0.000

Lenoir- Gunpowder Creek Instream Nutrlent Data
Date
Eff TP
Eff TKN
Eff TN
Ups TP
Ups TN
Ups ChI a
Ups Pheo a
DS1 TP
DS1 TN
DS1 ChI a
DS1 Pheo a
DS2 TP
DS2 TN
DS2 Chl a
DS2 Pheo a
(mg/I)
(mg/I)
(mg/I)
(mg/I)
(mg/I)
(mg/m3)
(mg/m3)
(mg/I)
(mg/I)
(mg/m3)
(mg/m3)
(mg/I)
(mg/I)
(mg/m3)
(mg/m3)
9/16/92
2.8
4.4
16
<0.2
0.7
0.96
0.82
0.3
1.5
0.64
1.39
0.2
0.6
27.2
4.76
9/24/92
0.89
0.85
2.5
1.35
11.81
4.1
0.93
0.84
1.52
1.37
19.51
4.43
5/12/93
2
4
15
<0.4
1.1
1.09
1.84
<0.4
0.74
14.69
4.37
5/25/93
1.13
1.6
19.59
3.83
1.11
1.72
17.14
4.1
6/21/93
2
1.8
13.1
<0.4
1.1
0.92
1.28
<0.4
0.74
17.8
5.21
6/23/93
0.76
1.37
16.1
5.53
0.84
1.33
16.95
5.37
7/15/93
2.8
2.7
8.9
<0.4
0.81
<0.4
1.3
1.24
2.38
<0.4
0.62
11.52
3.58
7/27/93
1.71
3.18
15.33
4.6
1.48
2.78
13.43
4.09
8/9/93
3.3
3.4
12.8
<0.4
0.88
0.4
1.2
0.94
1.73
<0.4
0.68
20.04
5.96
8/26/93
0.93
1.7
9.94
3.37
0.94
1.72
14.99
4.67
9/1/93
2.82
5.09
11.1
0.052
0.71
0.19 mg/
1.4 mg/I
1.03
1.4
0.08
0.72
22.63
4.68
9/29/93
0.96
1.32
48.64
6.28
1
1.36
35.64
5.48
Page 1

State of North Carolina
Department of Environment,
Health and Natural Resources
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
Steven J. Levitas, Deputy Secretary
CDEHNR
Division of Environmental Management
Water Quality Section
P.O. Box 29535
Raleigh, N.C. 27626-0535
FAX:[phone]
FAX TO: 441 IQ (lr4✓ 2-3;4-1c
GI I r5.c/a�f�1
FROM: Jam. Nk,ti�l
PHONE: [phone]
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LENOIR-GUNPOWDER CREEK WWTP
Residual Chlorine Ammonia as NH3
(summer)
7Q10 (CFS) 2.9 7010 (CFS) 2.9
DESIGN FLOW (MGD) 2 DESIGN FLOW (MGD) 2
DESIGN FLOW (CFS) 3.1 DESIGN FLOW (CFS) 3.1
STREAM STD (UG/L) 17.0 STREAM STD (MG/L) 1.0
UPS BACKGROUND LEVEL (UG/L) 0 UPS BACKGROUND LEVEL (MG/L) 0.22
IWC (%) 51.67 IWC (%) 51.67
Allowable Concentration (ug/l) 32.90 Allowable Concentration (mg/I) 1.73
(#34GS7.78sN7.8)
Fecal Limit
Ratio of 0.9 :1
Ammonia as NH3
(winter)
7Q10 (CFS) 4.01
200/100mi DESIGN FLOW (MGD) 2
DESIGN FLOW (CFS) 3.1
STREAM STD (MG/L) 1.8
UPS BACKGROUND LEVEL (MG/L) 0.22
IWC (%) 43.60
Allowable Concentration (mg/I) 3.84
i7, L8)
NC0023736
5/12/94

WHOLE EFFLUENT TOXICITY TESTING 0[SELF-MONITORING SUMMARY] Mon. Apr 18. 1994
FACILITY
RE
IIRIiMENT
YEAR JAN
MAR
APR
MAY
JIIN
J11L
AUG
sEP
TAKE WACCAMAW WWII' PERM CIIR LIM: 90%
NO3021881/001 Degin:3/I/93 Frequency: Q P/F A MAR JUN SEI' DEC
County:COI.IJMBUS Region: WIRO Suhbaain:IA1M56
1'F:O.A Special
7Q10: 0.0 IWC(%): 100.0 Onkr..
NonCurp:SINGLE
90 --
91 --
92 46.65'
03 30.23'
94 NRIFAIL
'--
24.15'
---
FAIL
:-
-
35.35'
FAIL
-
-
35.58'
FAIL
---
Ni
PASS
---
65.15'
PASS
-
--
>100'
---
--
-
>100'
---
-•
91.74'
PASS
_
32.28'
36.8'
_
21.76'
53.59'
_, eJ
51.78'
35.38'
FAIL
NonComp:SINGI.E
90 -
91 PASS
92 -
93 -
94 -
-
PASS
PASS
PASS
PASS
--
--
--
---
--
PASS
---
---
PASS
PASS
PASS
--•
PASS
--
---
--
NI
-
---
PASS
PASS
PASS
PASS
--
--
-
-
-•-
-
-
PASS
PASS
PASS
PASS
bt
-•-
•-
-
IAURE. HILL PAPER CO PERM CIIR LIM:1.5%
NC0006041/001 Begin:1211/93 Eminency: Q P/F A FEB MAY AUG NOV
County: RIC)IMOND Region: FRO Suhbasin: YAD16
I'F:0.2500 Special
7Q10: 25.000 IWC(%): 1.52 Order:
NmtCotnp:SINGL1i
90 -
01 --
02 PASS
93 -
94 -
PASS
PASS
till
PASS
PASS
-
--
---
-
-
-»
•--
•--
PASS
PASS
PASS
FAIL
---
--
•-
FAIL
---
-•-
---
FAIL
PASS
PASS
PASS
PASS
--
--
•-
---
---
--
PASS
FAIL
PASS
PASS
-
PASS
-
I.AIIRINDIJRG WW'IT PERM CIIR L1M:31%
N00020856/001 Begin: I2/1f93 Eminency: O WE A FEB MAY AUG NOV
County: SCOI'l.AND Region: PRO Subl+asin:I.UM55
PF:400 Special
7Q10:13.80 IWC(%):31.00 Order.
NonCompSINGIJ3
Y 90 PASS
91 -
92 PASS
93 -•-
94 -
-
PASS
PASS
-
PASS
NI
NR
PASS
-
-•
PASS
--
-
-
--
--
PASS
PASS
LATE
PASS
-
---
PASS
-
--
--
PASS
PASS
PASS
W NPASS
-
-
--
-
-
-
PASS
FAIL
PASS
PASS
IAURINBURG-MAXTONAIRPORT PERM CIIR LIM:I.3%
NC0044725/001 Begin:11/1/93 Frequency: Q WE A MAR JUN SEP DEC
County:SC0TLAND Region: FRO Suhbasin: LUM5l
PF: 1.00 Special
7Q10:111.0 IWC(%):1.38 Order.
NonComp:
90 60.29
91 NONE'
92 --
- 93 -
04 -•
11.2
-
PASS
PASS
PASS
Ni
•-
-
»-
35.5
--
-
---
66.6
-
PASS
PASS
26.5
-
-
-
15.5
--
--
---
Ni
PASS
PASS
NFUPASS
>90
--
--
--
NONE
-
-
--
>90
-
PASS
PASS
NONE
PASS
--
---
I.CPMASTICS • LIEF CIIRTAR:99%
NC0036366/001 Bcgin:222/91 Eminency: Q I'/F A FEB MAY AUG NOV
County:01111.1:)RD Region: WSRO Stthbasin: CPFOS
I'F: NA Special
7010:9.(10 IWC(%): 1110,0 Order:
NonComp:
90 --
91 --
92 -
93 -
94 -
-»
--
-
-
---
>90
>90
PASS
PASS
--
-
-
-
-•-
-»
-
-
>00
PASS
PASS
PASS
--
--
-
--
---
-
>90
PASS
PASS
PASS
»•
-»
-
-
.--
-
>90
PASS
PASS
hR
I,EDDI0 IIiR OIL CO- KBrJ Alrr( SALES PERM CIIR LIM:1.2%(GRAD)
NC0073113/001 Begin:2/7/91 Frequency: Q A MAR JUN SEP DEC
County:MCI)OWELL Region: ARO Subhnsin: CTD30
PP:0.0144 Special
7Q10: 1.80 IWC(%):1.2 Order.
NonComp:
90 '""
91 -
92 PASS
93 -
94 -
-"
---
PASS
---
---
---
PASS
PASS
-
---
---
-••
.-
---
•--
-.
--
PASS
PASS
.-
•--
•
-.
-
--
N
bt
PASS
PASS
-
bt
---
-
PASS
--
- -
H
PASS
PASS
LEDB 5 IER OIL CO- RAINBOW PANTRY 85 PERM CIIR LIM:I.9%(GRAD)
NC0076911/001 Bcgin:7/19/90 Eminency: Q P/F A MAR JUN SEP DEC
County:AVL'.RY Region: ARO Subhnsin: ER006
l'P:00045 Special
7010: 0.36 IWC(%):1!9 Order.
NonComp:S1NC'LE
90 NI
91 ---
92 ---
93 ---
94 PASS
NI
---
---
--
•-•
PASS ---
PASS -
FAIL LATE
.:PASS. -
1.455,IlefAI 21/31Q)6
-
---
PASS
---
PASS
PASS
PASS
PASS
---
--
--
---
-•-
--
---
---
PASS
PASS
PASS
FAIL
---
•--
---
PASS
--
---
..-
PASS.gp1
PASS '
PASS
FAIL
I.ENOIR. CITY OE- GUNPOWDER CRHIiK PERM CIIR LIM:38%
NC0023736/001 Begin: I0/4/92 Frequency: Q PB' A MAR JUN SEP DEC
Count y('AI.DWlil.I. Region: ARO. Subhnsin: CT1132
PI': 1.00 Special
7Q10: 2.90 IWC(-%):34.83 Order:
NonComp:SINGLE
90 -
91 -
92 -
93 -
94 .--
PASS
PASS
PASS
PASS
FAIL
-
-
-
-
-
--
-
-
PASS
PASS
PASS
PASS
-
--
-_
.-
---
PASS
--
FAIL
PASS
--
---
PASS
---
LATE
PASS
PASS
PASS
PASS
I.ENOIR, CITY OF- LOWER CREEK W WTP PERM CUR LIM:40%
N00023981/001 Begin:1/1/93 .Fequency: Q P/F A AUG NOV FEB MAY
County:CALDW191 Region: ARO Subbasin: CTD31
PF:4 08 Special
7Q10: 9.3 IWC(%):40.43 Order:
NonComp:
Y 90 PASS
91 --
92 --
93 -
04 ---
-
PASS
PASSSIG
PASS(s)
PASS
--
--
--
--
NI
-
-
PASS
PASS
PASS
PASS
PASS
PASS
PASS
PASS
--
-
-»
Ni
PASS
PASS
PASS
941
-
-
NI
-
-
PASS
PASS
PASS
PASS
-
-
---
1.IJ(ING'1'ON RI(GIONAI. WW7T PERM CIIR I.IM:56%
NC0055786/00I Begin:6/1/89 Eminency: Q P/F A FEB MAY AUG NOV
County:DAVIDSON Region:WSRO Suhbasin:YADO7
PE' 5.5(1 Special
/0111' r.10 IW( 't'h•):}?.",1 I'nA•r
0 2 consecutive failures = significant noncompliance
LEGEND:
PERM = Permit Requirement I.I.I=
Begin = First month required 7Q10 =
PP= Permitted I1ow (MGU) IWC'5.
Data Nntalinn: f Fathead Minnow: • -
Rcpcminl: Notannn: •-• = Data not n•qu
Y Pre 1900 Dnln Avnilable
Administrative Leiter - Target Frequency = Monitoring frequency: Q- Quarterly; M- Monthly; BM- Bimonthly: SA- Semiannually; A -Annually; OWD- Only when discharging; 1)- Discontinued monitoring requirement; IS- Conducting independent study
Receiving stream low flow criterion Ws) A = quarterly monitoring increases to monthly upon single failure Months that testing must occur - ex. JAN,APR,IUL,OCI NonComp = Current Compliance Requirement
= In,lrcatn waste concentration P/P = Pass/Pad chronic test AC = Acute CIIR = Chronic
(-criodanhnia sn.: Inv - Mvsid shrimp: Cl,V - Cltmnic value: P - Mortality of slated percentage at highest concentration: at - Performed by DIN An Tox Gmun: ht - Bad test
fired: NIL - Not n•IkMed; ( ) - Beginning of Quarter Facility Activity Status: 1 - Inactive, N - Newly lssucd(I'o construct): II - Active but not discharging: t•More data available for month in question SIG = ORC signature needed

North Carolina Division of Environmental Management
Water Quality Section / Intensive Survey Group
March 12, 1992
MEMORANDUM
To: Ruth Swanek /
Through: Jay Sauber \ 9d `7
V
From: Howard Bryant J �8
Subject: Long-term BOD Analysis forLenoir-Gunpowder Creek VV TP
County: Caldwell
NPDES # NC0023736
Receiving Stream: Gunpowder Creek
Sub -basin: 030832
PAY NH3-N TKN-N NOX-N T-N.
0 2.70 4.5 10.00 14.0
5 12.16 0.41 2.1 13.00 15.0
10 17.77 0.04 1.5 13.00 14.0
15 22.10 0.03 1.7 12.00 14.0
20 23.86 0.03 1.4 13.00 14.0
25 25.42 0.01 1.2 13.00 14.0
30 26.88 0.10 1.2 13.00 14.0
35 28.38
40 29.60
50 31.63
60 33.10 0.05 3.0 14.00 17.0
70 34.35
80 35.28
90 36.28
100 37.14
110 37.87
120 38.44
130 38.84 0.02 0.9 15.00 16.0
Date Collected: October 9, 1991
1100-1005
cc: Central Files
Regional Water Quality Supervisor
Collected by: White
pH: 7.7
Test evaluation: excellent
Seeded: seeded

Fadiity: lenolr-gunpowder cr
NPDES#: nc0023736
Redeving Stream: gunpowder cr
Comment(s):
Low Row Record Station Number:
Hydrologic Area Number:
Drainage Area Low Flow Record Station:
Qave Low Flow Record Station:
s7Q10 Low Row Record Station:
w7010 Low Row Record Station:
30Q2 Low Flow Record Station:
Drainage Area New Site:
MAR New Site:
Qave per Report Equation:
87010 per Report Equation:
w7010 per Report Equation:
3002 per Report Equation:
Drainage Area Ratio:
[ new DA/Daatgage
l
Weighted Ratio:
Over -ride Inappropriate Site:
02.1416.7000
HA10
15.00 mites squared
18.00 cfs
3.40 cfs
4.60 cfs
6.20 cfs
12.90 sq. miles
1.4 cfs/miles squared
17.42 cfs
2.78 cfs
4.26 cfs
5.99 cfs
Continue
0.86:1
Continue
0.81 :1
Gage
Inappropriate use of locations
•
Gage
Appropriate use of locations
Drainage Area New Site:
MAR New Site:
Weighted Qave per Report Equation:
Weighted s7Q10 per Report Equation:
Weighted w7Q10 per Report Equation:
Weighted 30Q2 per Report Equation:
12.90 miles squared
1.4 cfs/miles squared
17.42 cfs_
2.90 cfs
4.01 cfs
5.45 cfs

MODEL RESULTS
Discharger : LENOIR-GUNPOWDER CRK
Receiving Stream : GUNPOWDER CREEK
SUMMER
MODEL FOR EXPANSION TO 2 MGD
(/3w5: 30 Nf3= /, / io =S)
The End D.O. is 8.19 mg/l.
The End CBOD is 0.05 mg/l.
The End NBOD is 0.00 mg/1.
WLA WLA WLA
DO Min CBOD NBOD DO Waste Flow
(mg/1) Milepoint Reach #. (mg/1) (mg/1) (mg/1) (mg(i)
Segment 1 5.22 5.10 8
Reach 1
Reach 2
Reach 3
Reach 4
Reach 5
Reach 6
Reach 7
Reach 8
Reach 9
Segment 2 6.69 0.00 1
Reach 1
Reach 2
Reach 3
60.00 7.80 5.00 2.00000
0.00 0.00 0.00 0.00000
0.00 0.00 0.00 0.00000
0.00 0.00 0.00 0.00000
0.00 0.00 0.00 0.00000
0.00 0.00 0.00 0.00000
0.00 0.00 0.00 0.00000
0.00 0.00 0.00 0.00000
0.00 0.00 0.00 0.00000
0.00 0.00 0.00 0.00000
0.00 0.00 0.00 0.00000
0.00 0.00 0.00 0.00000

*** MODEL SUMMARY DATA ***
Discharger : LENOIR-GUNPOWDER CRK
Receiving Stream : GUNPOWDER CREEK
Summer 7Q10 : 2.9
Design Temperature: 25.0
Subbasin : 030832
Stream Class: C
Winter 7Q10 : 4.01
'LENGTH' SLOPE' VELOCITY 1 DEPTH' Kd 1 Kd 1 Ka 1 Ka 1 KN 1
mile 1 ft/mil fps I ft Idesign l @20', Idesign l @201/2 IdesignI
I I I
Segment 1 1 2.301 18.201 0.407 1.04 0.41 0.33 14.87 13.34 0.44
Reach 1 1 1
I I 1 1 1 1 1 1 I
Segment 1 1 1.601 11.101 0.359 1 1.20 1 0.34 1 0.27 1 8.00 1 7.181 0.44
Reach 2 1 1 1 1 1 1 1 1
I 1 1 1 1 1 1 1 I
Segment 1 1 0.401 6.251 0.308 1 1.34 1 0.30 1 0.24 1 3.86 1 3.461 0.44
Reach 3 1 1 1 1 1 1 1 1 I
1 1 1 1 1 1 1 I
Segment 1 1 0.051 6.251 0.324 1 1.48 10.30 1 0.24 1 2.94 1 2.641 0.44
Reach 4 1 1 1 1 1 1 1 1 I
1 1 1 1 1 1 1 1 I
Segment 1 1 0.051 3.001 0.262 1 1.64 1 0.27 1 0.22 1 1.14 1 1.021 0.44
Reach 5 1 1 1 1 1 1 1 1 I
I 1 1 I 1 1 1 1
Segment 1 1 0.051 1.001 0.191 1 1.93 1 0.26 10.21 1 1.11 1 1.001 0.44
Reach 6 1 I 1 1 1 1 1 1 I
I I 1 1 1 1 1 1 I
Segment 1 I 0.50I 0.101 0.011 1 3.10 1 0.13 10.10 1 0.72 1 0.651 0.44
Reach 7 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 I
Segment 1 1 0.501 0.101 0.005 16.25 1 0.13 10.10 1 0.36 I 0.321 0.44
Reach 8 1 1 1 1 1 1 1 1 I
Segment 1
Reach 9
1 1 1 1 1 1 1 I
0.501 0.101 0.004 1 9.40 10.13 10.10 10.23 1 0.211 0.44
I I I 1 1 1 l
1 1 1 1 1 1 1 1 I
Segment 2 1 0.50I 0.101 0.003 112.50 1 0.13 1 0.10 1 0.22 1 0.201 0.44
Reach 1 1 1 1 1 1 1 1 1 I
I 1 1 1 1 1 1 I I
Segment 2 1 0.501 0.101 0.002 I15.60 10.13 10.10 10.22 1 0.201 0.44
Reach 2 1 1 1 1 1 1 1 1 I
1 1 1 1 1 1 1 1 I
Segment 2 1 0.151 0.101 0.002 116.50 1 0.13 10.10 10.22 1 0.201 0.44
Reach 3 1 1 1 1 1 1 1 1 I

I Flow I CBOD I NBOD I D.O.
I cfs I mg/1 1 mg/1 1 mg/1
Segment 1 Reach 1
Waste I 3.100 160.000 I 7.800 1 5.000
Headwaters) 2.900 I 2.000 1 1.000 I 7.440
Tributary I 0.000 I 2.000 I 1.000 I 7.440
* Runoff I 0.570 1 2.000 1 1.000 1 7.440
Segment 1 Reach 2
Waste 1 0.000 I 0.000 I 0.000 I 0.000
Tributary I 0.000 1 2.000 I 1.000 1 7.440
* Runoff 1 0.570 1 2.000 1 1.000 1 7.440
Segment 1 Reach 3
Waste I 0.000 1 0.000 1 0.000 I 0.000
Tributary I 0.000 1 2.000 I 1.000 I 7.440
* Runoff 1 0.570 1 2.000 1 1.000 1 7.440
Segment 1 Reach 4
Waste I 0.000 1 0.000 I 0.000 I 0.000
Tributary I 2.150 I 2.000 I 1.000 I 7.440
* Runoff 1 0.000 1 2.000 1 1.000 1 7.440
Segment 1 Reach 5
Waste I 0.000 I 0.000 1 0.000 I 0.000
Tributary I 0.000 I 2.000 1 1.000 I 7.440
* Runoff 1 0.000 1 2.000 1 1.000 I 7.440
Segment 1 Reach 6
Waste 1 0.000 I 0.000 I 0.000 1 0.000
Tributary 1 0.000 I 2.000 1 1.000 I 7.440
* Runoff 1 0.000 1 2.000 1 1.000 I 7.440
Segment 1 Reach 7
Waste 1 0.000 I 0.000 I 0.000 I 0.000
Tributary I 0.000 I 2.000 I 1.000 I 7.440
* Runoff 1 0.330 1 2.000 1 1.000 1 7.440
Segment 1 Reach 8
Waste. I 0.000 I 0.000 1 0.000 1 0.000
Tributary I 0.000 I 2.000 I 1.000 I 7.440
* Runoff 1 0.330 1 2.000 1 1.000 1 7.440
Segment 1 Reach 9
Waste I 0.000 1 0.000 I 0.000 I 0.000
Tributary I 0.000 I 2.000 I 1.000 I 7.440
* Runoff 1 0.330 1 2.000 1 1.000 1 7.440

Segment 2 Reach 1
Waste I 0.000 I 0.000 I 0.000 I 0.000
Headwaters) 0.000 1 2.000 1 1.000 1 7.440
Tributary I 0.000 I 2.000 I 1.000 I 7.440
* Runoff I 0.330 1 2.000 1 1.000 1 7.440
Segment 2 Reach 2
Waste 1 0.000 1 0.000 I 0.000 1 0.000
Tributary 1 0.000 1 2.000 I 1.000 I 7.440
* Runoff 1 0.330 1 2.000 1 1.000 1 7.440
Segment 2 Reach 3
Waste I 0.000 1 0.000 1 0.000 1 0.000
Tributary I 0.000 I 2.000 1 1.000 1 7.440
* Runoff 1 0.330 1 2.000 1 1.000 1 7.440
* Runoff flow is in cfs/mile

SUMMER
MODEL FOR EXPANSION TO 2 MGD
I Seg # I Reach # I Seg Mi I D.O. I CBOD I NBOD I Flow I
1 1 0.00 6.18 31.97 4.51 6.00
1 1 0.23 6.63 30.88 4.37 6.13
1 1 0.46 6.91 29.85 4.24 6.26
1 1 0.69 7.09 28.87 4.11 6.39
1 1 0.92 7.20 27.93 3.98 6.52
1 1 1.15 7.28 27.03 3.86 6.66
1 1 1.38 7.34 26.17 3.75 6.79
1 1 1.61 7.38 25.35 3.64 6.92
1 1 1.84 7.42 24.56 3.54 7.05
1 1 2.07 7.45 23.81 3.44 7.18
1 1 2.30 7.47 23.08 3.35 7.31
1 2 2.30 7.47 23.08 3.35 7.31
1 2 2.46 7.40 22.61 3.28 7.40
1 2 2.62 7.35 22.15 3.21 7.49
1 2 2.78 7.31 21.71 3.15 7.58
1 2 2.94 7.28 21.27 3.08 7.68
1 2 3.10 7.27 20.85 3.02 7.77
1 2 3.26 7.26 20.44 2.96 7.86
1 2 3.42 7.26 20.04 2.91 7.95
1 2 3.58 7.26 19.65 2.85 8.04
1 2 3.74 7.26 19.27 2.80 8.13
1 2 3.90 7.27 18.90 2.74 8.22
1 3 3.90 7.27 18.90 2.74 8.22
1 3 3.94 7.25 18.81 2.73 8.25
1 3 3.98 7.22 18.72 2.71 8.27
1 3 4.02 7.20 18.63 2.70 8.29
1 3 4.06 7.18 18.54 2.69 8.31
1 3 4.10 7.16 18.45 2.67 8.34
1 3 4.14 7.14 18.36 2.66 8.36
1 3 4.18 7.13 18.27 2.64 8.38
1 3 4.22 7.11 18.19 2.63 8.41
1 3 4.26 7.09 18.10 2.62 8.43
1 3 4.30 7.08 18.01 2.60 8.45
1 4 4.30 7.15 14.76 2.28 10.60
1 4 4.31 7.15 14.76 2.28 10.60
1 4 4.31 7.15 14.76 2.28 10.60
1 4 4.32 7.15 14.75 2.28 10.60
1 4 4.32 7.14 14.75 2.27 10.60
1 4 4.33 7.14 14.74 2.27 10.60
1 4 4.33 7.14 14.74 2.27 10.60
1 4 4.34 7.14 14.74 2.27 10.60
1 4 4.34 7.14 14.73 2.27 10.60
1 4 4.35 7.13 14.73 2.27 10.60
1 4 4.35 7.13 14.72 2.27 10.60
1 5 4.35 7.13 14.72 2.27 10.60
1 5 4.36 7.13 14.72 2.27 10.60
1 5 4.36 7.12 14.71 2.27 10.60
1 5 4.37 7.12 14.71 2.27 10.60
1 5 4.37 7.11 14.70 2.26 10.60
1 5 4.38 7.11 14.70 2.26 10.60
1 5 4.38 7.10 14.69 2.26 10.60
1 5 4.38 7.10 14.69 2.26 10.60
1 5 4.39 7.10 14.68 2.26 10.60
1 5 4.39 7.09 14.68 2.26 10.60
1 5 4.40 7.09 14.68 2.26 10.60
1 6 4.40 7.09 14.68 2.26 10.60

1 6 4.40 7.08 14.67 2.26 10.60
1 6 4.41 7.08 14.66 2.25 10.60
1 6 4.41 7.07 14.66 2.25 10.60
1 6 4.42 7.07 14.65 2.25 10.60
1 6 4.42 7.06 14.64 2.25 10.60
1 6 4.43 7.05 14.64 2.25 10.60
1 6 4.43 7.05 14.63 2.25 10.60
1 6 4.44 7.04 14.63 2.24 10.60
1 6 4.44 7.04 14.62 2.24 10.60
1 6 4.45 7.03 14.61 2.24 10.60
1 7 4.45 7.03 14.61 2.24 10.60
1 7 4.50 6.57 14.09 1.98 10.62
1 7 4.55 6.23 13.59 1.75 10.63
1 7 4.60 6.00 13.11 1.55 10.65
1 7 4.65 5.85 12.64 1.37 10.67
1 7 4.70 5.75 12.19 1.21 10.68
1 7 4.75 5.71 11.76 1.07 10.70
1 7 4.80 5.70 11.34 0.95 10.72
1 7 4.85 5.72 10.93 0.84 10.73
1 7 4.90 5.76 10.55 0.74 10.75
1 7 4.95 5.81 10.17 0.66 10.77
1 8 4.95 5.81 10.17 0.66 10.77
1 8 5.00 5.48 9.41 0.50 10.78
1 8 5.05 5.30 8.70 0.38 10.80
1 8 5.10 5.22 8.05 0.29 10.82
1 8 5.15 5.22 7.44 0.23 10.83
1 8 5.20 5.28 6.88 0.17 10.85
1 8 5.25 5.37 6.37 0.13 10.87
1 8 5.30 5.49 5.89 0.10 10.88
1 8 5.35 5.62 5.45 0.08 10.90
1 8 5.40 5.76 5.04 0.06 10.91
1 8 5.45 5.91 4.66 0.05 10.93
1 9 5.45 5.91 4.66 0.05 10.93
1 9 5.50 5.89 4.23 0.04 10.95
- 1 9 5.55 5.92 3.84 0.03 10.96
1 9 5.60 5.97 3.49 0.02 10.98
1 9 5.65 6.05 3.17 0.02 11.00
1 9 5.70 6.15 2.87 0.01 11.01
1 9 5.75 6.25 2.61 0.01 11.03
1 9 5.80 6.36 2.37 0.01 11.05
1 9 5.85 6.47 2.15 0.01 11.06
1 9 5.90 6.58 1.95 0.01 11.08
1 9 5.95 6.69 1.78 0.01 11.10
2 1 0.00 6.69 1.78 0.01 11.10
2 1 0.05 6.82 1.56 0.00 11.11
2 1 0.10 6.94 1.37 0.00 11.13
2 1 0.15 7.06 1.21 0.00 11.15
2 1 0.20 7.17 1.07 0.00 11.16
2 1 0.25 7.28 0.94 0.00 11.18
2 1 0.30 7.38 0.83 0.00 11.20
2 1 0.35 7.47 0.73 0.00 11.21
2 1 0.40 7.55 0.64 0.00 11.23
2 1 0.45 7.62 0.57 0.00 11.24
2 1 0.50 7.69 0.50 0.00 11.26
2 2 0.50 7.69 0.50 0.00 11.26
2 2 0.55 7.78 0.42 0.00 11.28
2 2 0.60 7.85 0.34 0.00 11.29
2 2 0.65 7.92 0.29 0.00 11.31
2 2 0.70 7.97 0.24 0.00 11.33
2 2 0.75 8.02 0.20 0.00 11.34

2 2 0.80 8.06 0.17 0.00 11.36
2 2 0.85 8.09 0.14 0.00 11.38
2 2 0.90 8.12 0.12 0.00 11.39
2 2 0.95 8.14 0.10 0.00 11.41
2 2 1.00 8.16 0.08 0.00 11.43
2 3 1.00 8.16 0.08 0.00 11.43
2 3 1.02 8.16 0.08 0.00 11.43
2 3 1.03 8.17 0.08 0.00 11.44
2 3 1.04 8.17 0.07 0.00 11.44
2 3 1.06 8.17 0.07 0.00 11.45
2 3 1.07 8.18 0.07 0.00 11.45
2 3 1.09 8.18 0.06 0.00 11.46
2 3 1.10 8.19 0.06 0.00 11.46
2 3 1.12 8.19 0.06 0.00 11.47
2 3 1.13 8.19 0.06 0.00 11.47
2 3 1.15 8.19 0.05 0.00 11.48
Seg # I Reach # I Seg Mi I D.O. I CBOD I NBOD I Flow I

MODEL RESULTS
Discharger : LENOIR-GUNPOWDER CRK
Receiving Stream : GUNPOWDER CREEK
WINTER
MODEL FOR EXPANSION TO 2 MGD
('B6D5 30/ A/H3c 3.3� �o =s)
The End D.O. is 9.98 mg/1.
The End CBOD is 0.43 mg/l.
The End NBOD is 0.00 mg/l.
WLA WLA WLA
DO Min CBOD NBOD DO Waste Flow
(mg/1) Milepoint Reach # (mg/1) (mg/1) (mg/1) (mg(i)
Segment 1 6.86 5.25 8
Reach 1
Reach 2
Reach 3
Reach 4
Reach 5
Reach 6
Reach 7
Reach 8
Reach 9
Segment 2 7.60 0.00 1
Reach 1
Reach 2
Reach 3
60.00 17.30 5.00 2.00000
0.00 0.00 0.00 0.00000
0.00 0.00 0.00 0.00000
0.00 0.00 0.00 0.00000
0.00 0.00 0.00 0.00000
0.00 0.00 0.00 0.00000
0.00 0.00 0.00 0.00000
0.00 0.00 0.00 0.00000
0.00 0.00 0.00• 0.00000
0.00 0.00 0.00 0.00000
0.00 0.00 0.00 0.00000
0.00 0.00 0.00 0.00000

*** MODEL SUMMARY DATA ***
Discharger : LENOIR-GUNPOWDER CRK
Receiving Stream GUNPOWDER CREEK
Summer 7Q10 : 2.9
Design Temperature: 14.0
Subbasin : 030832
Stream Class: C
Winter 7Q10 : 4.01
ILENGTHI SLOPE' VELOCITY 1 DEPTH' Kd 1 Kd 1 Ka 1 Ka 1 KN 1
1 mile 1 ft/mil fps I ft 'design' @20,4 !design' @201/2 Idesign!
1 1 1 1 1 1 1 1 I
Segment 1 1 2.301 18.201 0.457 1 1.06 1 0.26 1 0.34 113.14 1 14.971 0.19
Reach 1 1 1 1 1 1 1 1 1 I
1 1 1 1 1 1 1 1 I
Segment 1 1 1.601 11.101 0.397 11.22 1 0.21 10.28 1 6.96 I 7.931 0.19
Reach 2 1 1 1 1 1 1 1 1 I
1 1 1 1 1 1 1 1 I
Segment 1 1 0.401 6.251 0.338 1 1.37 1 0.18 1 0.24 1 3.34 1 3.801 0.19
Reach 3 1 1 1 1 1 1 1 1 I
1 1 1 1 1 1 1 1 I
Segment 1 1 0.051 6.251 0.350 1 1.49 1 0.18 10.24 1 2.49 I 2.841 0.19
Reach 4 1 1 1 1 1 1 1 1 I
I 1 1 1 1 1 1 1
Segment 1 1 0.051 3.001 0.283 1 1.66 10.17 1 0.22 1 0.97 1 1.101 0.19
Reach 5 1 1 1 1 1 1 1 1 I
1 1 1 1 1 1 1 1 I
Segment 1 1 0.051 1.001 0.205 1 1.95 1 0.16 10.21 1 0.88 1 1.001 0.19
Reach 6 1 1 1 1 1 1 1 1
I 1 1 1 1 1 1 1 I
Segment 1 1 0.501 0.101 0.011 1 3.10 10.08 10.10 10.57 1 0.651 0.19
Reach 7 1 1 1 1 1 1 1 1
I I 1 1 1 1 1 1 I
Segment 1 1 0.501 0.101 0.005 1 6.25 10.08 10.10 1 0.28 I 0.321 0.19
Reach 8 1 1 1 1 1 1 1 1 I
Segment 1
Reach 9
1 1 1 1 1 I 1 I
0.501 0.101 0.004 1 9.40 10.08 1 0.10 1 0.18 1 0.211 0.19
' I 1 1 1 1 1 I
1 1 1 1 1 1 1 I
Segment 2 1 0.501 0.101 0.003 112.50 1 0.08 10.10 1 0.18 1 0.201 0.19
Reach 1 1 1 1 1 1 1 1 1 I
I I 1 1 1 1 1 1
Segment 2 1 0.501 0.101 0.002 115.60 1 0.08 10.10 1 0.18 1 0.201 0.19
Reach 2 1 1 1 1 1 1 1 1 I
Segment 2
Reach 3
1 1 1 1 1 1 I
0.151 0.101 0.002 116.50 1 0.08 1 0.10 10.18 1 0.201 0.19
1 1 1 1 1 1 1 I

I Flow I CBOD I NBOD 1 D.O. I
I cfs 1 mg/1 1 mg/1 1 mg/1 I
Segment 1 Reach 1
Waste I 3.100 1 60.000 117.300 1 5.000
Headwaters) 4.010 1 2.000 I 1.000 1 9.280
Tributary I 0.000 I 2.000 1 1.000 1 9.280
-* Runoff 1 0.570 1 2.000 1 1.000 1 9.280
Segment 1 Reach 2
Waste I 0.000 1 0.000 I 0.000 1 0.000
Tributary I 0.000 I 2.000 I 1.000 I 9.280
* Runoff 1 0.570 1 2.000 1 1.000 I 9.280
Segment 1 Reach 3
Waste 1 0.000 1 0.000 1 0.000 1 0.000
Tributary I 0.000 1 2.000 I 1.000 1 9.280
* Runoff 1 0.570 1 2.000 1 1.000 1 9.280
Segment 1 Reach 4
Waste I 0.000 1 0.000 I 0.000 I 0.000
Tributary I 2.150 I 2.000 I 1.000 I 9.280
* Runoff 1 0.000 I 2.000 I 1.000 I 9.280
Segment 1 Reach 5
Waste I 0.000 I 0.000 I 0.000 I 0.000
Tributary I 0.000 I 2.000 1 1.000 I 9.280
* Runoff 1 0.000 1 2.000 I 1.000 I 9.280
Segment 1 Reach 6
Waste I 0.000 1 0.000 1 0.000 I 0.000
Tributary 1 0.000 I 2.000 I 1.000 I 9.280
* Runoff 1 0.000 1 2.000 1 1.000 1 9.280
Segment 1 Reach 7
Waste I 0.000 I 0.000 I 0.000 I 0.000
Tributary I 0.000 I 2.000 1 1.000 I 9.280
* Runoff 1 0.330 1 2.000 1 1.000 1 9.280
Segment 1 Reach 8
Waste 1 0.000 1 0.000 I 0.000 I 0.000
Tributary I 0.000 I 2.000 I 1.000 I 9.280
* Runoff 1 0.330 1 2.000 1 1.000 1 9.280
Segment 1 Reach 9
Waste I 0.000 I 0.000 I 0.000 1 0.000
Tributary I 0.000 I 2.000 I 1.000 1 9.280
* Runoff 1 0.330 1 2.000 1 1.000 1 9.280

Segment 2 Reach 1
Waste 1 0.000 I 0.000 1 0.000 I 0.000
Headwaters) 0.000 I 2.000 1 1.000 1 9.280
Tributary 1 0.000 ) 2.000 1 1.000 I 9.280
* Runoff I 0.330 1 2.000 1 1.000 1 9.280
Segment 2 Reach 2
Waste I 0.000 I 0.000 I 0.000 1 0.000
Tributary I 0.000 I 2.000 I 1.000 1 9.280
* Runoff 1 0.330 1 2.000 1 1.000 1 9.280
Segment 2 Reach 3
Waste I 0.000 I 0.000 I 0.000 1 0.000
Tributary 1 0.000 1 2.000 I 1.000 I 9.280
* Runoff I 0.330 I 2.000 I 1.000 1 9.280
* Runoff flow is in cfs/mile

WINTER
MODEL FOR EXPANSION TO 2 MGD
I Seg # I Reach # I Seg Mi I D.O. I CBOD I NBOD I Flow I
1 1 0.00 7.41 27.29 8.11 7.11
1 1 0.23 8.19 26.62 7.93 7.24
1 1 0.46 8.70 25.97 7.76- 7.37
1 1 0.69 9.04 25.35 7.60 7.50
1 1 0.92 9.26 24.75 7.44 7.63
1 1 1.15 9.42 24.18 7.29 7.77
1 1 1.38 9.52 23.62 7.15 7.90
1 1 1.61 9.60 23.08 7.01 8.03
1 1 1.84 9.65 22.56 6.87 8.16
1 1 2.07 9.69 22.06 6.74 8.29
1 1 2.30 9.72 21.58 6.61 8.42
1 2 2.30 9.72 21.58 6.61 8.42-
1 2 2.46 9.68 21.26 6.52 8.51
1 2 2.62 9.64 20.94 6.43 8.60
1 2 2.78 9.62 20.63 6.34 8.69
1 2 2.94 9.60 20.34 6.26 8.79
1 2 3.10 9.59 20.04 6.18 8.88
1 2 3.26 9.58 19.75 6.09 8.97
1 2 3.42 9.57 19.47 6.02 9.06
1 2 3.58 9.57 19.20 5.94 9.15
1 2 3.74 9.57 18.93 5.86 9.24
1 2 3.90 9.57 18.67 5.79 9.33
1 3 3.90 9.57 18.67 5.79 9.33
1 3 3.94 9.55 18.60 5.77 9.36
1 3 3.98 9.54 18.54 5.75 9.38
1 3 4.02 9.52 18.47 5.73 9.40
1 3 4.06 9.51 18.41 5.71 9.42
1 3 4.10 9.49 18.34 5.69 9.45
1 3 4.14 9.48 18.28 5.67 9.47
1 3 4.18 9.47 18.22 5.65 9.49
1 3 4.22 9.46 18.15 5.63 9.52
1 3 4.26 9.45 18.09 5.61 9.54
1 3 4.30 9.43 18.03 5.60 9.56
1 4 4.30 9.41 15.09 4.75 11.71
1 4 4.31 9.40 15.08 4.75 11.71
1 4 4.31 9.40 15.08 4.75 11.71
1 4 4.32 9.40 15.08 4.75 11.71
1 4 4.32 9.40 15.08 4.75 11.71
1 4 4.33 9.40 15.07 4.75 11.71
1 4 4.33 9.40 15.07 4.75 11.71
1 4 4.34 9.40 15.07 4.75 11.71
1 4 4.34 9.40 15.07 4.75 11.71
1 4 4.35 9.40 15.06 4.75 11.71
1 4 4.35 9.39 15.06 4.74 11.71
1 5 4.35 9.39 15.06 4.74 11.71
1 5 4.36 9.39 15.06 4.74 11.71
1 5 4.36 9.39 15.06 4.74 11.71
1 5 4.37 9.39 15.05 4.74 11.71
1 5 4.37 9.38 15.05 4.74 11.71
1 5 4.38 9.38 15.05 4.74 11.71
1 5 4.38 9.38 15.05 4.74 11.71
1 5 4.38 9.38 15.04 4.74 11.71
1 5 4.39 9.37 15.04 4.74 11.71
1 5 4.39 9.37 15.04 4.74 11.71
1 5 4.40 9.37 15.03 4.73 11.71
1 6 4.40 9.37 15.03 4.73 11.71

1 6 4.40 9.36 15.03 4.73 11.71
1 6 4.41 9.36 15.03 4.73 11.71
1 6 4.41 9.36 15.02 4.73 11.71
1 6 4.42 9.35 15.02 4.73 11.71
1 6 4.42 9.35 15.02 4.73 11.71
1 6 4.43 9.35 15.01 4.73 11.71
1 6 4.43 9.34 15.01 4.73 11.71
1 6 4.44 9.34 15.01 4.72 11.71
1 6 4.44 9.33 15.00 4.72 11.71
1 6 4.45 9.33 15.00 4.72 11.71
1 7 4.45 9.33 15.00 4.72 11.71
1 7 4.50 8.96 14.67 4.47 11.73
1 7 4.55 8.67 14.34 4.24 11.74
1 7 4.60 8.43 14.03 4.02 11.76
1 7 4.65 8.25 13.72 3.81 11.78
1 7 4.70 8.11 13.42 3.61 11.79
1 7 4.75 8.00 13.12 3.42 11.81
1 7 4.80 7.93 12.83 3.25 11.83
1 7 4.85 7.88 12.55 3.08 11.84
1 7 4.90 7.85 12.27 2.92 11.86
1 7 4.95 7.84 12.00 2.76 .11.88
1 8 4.95 7.84 12.00 2.76 11.88
1 8 5.00 7.45 11.45 2.46 11.89
1 8 5.05 7.18 10.91 2.19 11.91
1 8 5.10 7.01 10.41 1.95 11.93
1 8 5.15 6.90 9.93 1.74 11.94
1 8 5.20 6.86 9.46 1.55 11.96
1 8 5.25 6.86 9.03 1.38 11.98
1 8 5.30 6.89 8.61 1.23 11.99
1 8 5.35 6.95 8.21 1.09 12.01
1 8 5.40 7.03 7.83 0.97 12.02
1 8 5.45 7.13 7.47 0.87 12.04
1 9 5.45 7.13 7.47 0.87 12.04
1 9 5.50 7.05 7.04 0.75 12.06
1 9 5.55 7.02 6.64 0.65 12.07
1 9 5.60 7.02 6.26 0.56 12.09
1 9 5.65 7.06 5.90 0.49 12.11
1 9 5.70 7.12 5.56 0.42 12.12
1 9 5.75 7.19 5.24 0.37 12.14
1 9 5.80 7.28 4.94 0.32 12.16
1 9 5.85 7.39 4.66 0.28 12.17
1 9 5.90 7.49 4.39 0.24 12.19
1 9 5.95 7.60 4.14 0.21 12.21
2 1 0.00 7.60 4.14 0.21 12.21
2 1 0.05 7.73 3.83 0.17 12.22
2 1 0.10 7.87 3.55 0.14 12.24
2 1 0.15 8.01 3.28 0.12 12.26
2 1 0.20 8.14 3.03 0.10 12.27
2 1 0.25 8.28 2.81 0.08 12.29
2 1 0.30 8.41 2.60 0.07 12.31
2 1 0.35 8.53 2.40 0.06 12.32
2 1 0.40 8.65 2.22 0.05 12.34
2 1 0.45 8.76 2.06 0.04 12.35
2 1 0.50 8.87 1.90 0.04 12.37
2 2 0.50 8.87 1.90 0.04 12.37
2 2 0.55 9.02 1.70 0.03 12.39
2 2 0.60 9.15 1.51 0.02 12.40
2 2 0.65 9.28 1.35 0.02 12.42
2 2 0.70 9.39 1.20 0.01 12.44
2 2 0.75 9.48 1.07 0.01 12.45

4 . f.
I
2 2 0.80
2 2 0.85
2 2 0.90
2 2 0.95
2 2 1.00
2 3 1.00
2 3 1.02
2 3 1.03
2 3 1.04
2 3 1.06
2 3 1.07
2 3 1.09
2 3 1.10
2 3 1.12
2 3 1.13
2 3 1.15
Seg # I Reach # I Seg Mi
I
9.57 0.95 0.01 12.47
9.65 0.85 0.01 12.49
9.72 0.76 0.01 12.50
9.79 0.68 0.01 12.52
9.84 0.60 0.01 12.54
9.84 0.60 0.01 12.54
9.86 0.58 0.01 12.54
9.87 0.56 0.01 12.55
9.89 0.55 0.01 12.55
9.90 0.53 0.01 12.56
9.92 0.51 0.01 12.56
9.93 0.49 0.01 12.57
9.94 0.48 0.01 12.57
9.95 0.46 0.00 12.58
9.96 0.45 0.00 12.58
9.98 0.43 0.00 12.59
D.O. I CBOD I NBOD I Flow I

0 CONSULTING ENGINEERS
McGILL ASSOCIATES, P.A.
March 9, 1994
Mr. Trevor Clements
North Carolina Department of Environment,
Health and Natural Resources
Division of Environmental Management
Post Office Box 29535
Raleigh, North Carolina 27626-0535
Dear Mr. Clements:
oi94
RE: City of Lenoir
Gunpowder Creek WWTP
NPDES Permit No. NC0023736
The City of Lenoir is in the preliminary design stages of expanding the capacity of the
Gunpowder Creek Wastewater Treatment Plant. The plant is currently operating at over 90% of its
design capacity of 1.0 mgd (average daily flow) during the wet season and the City is evaluating several
treatment processes to determine the most effective process for expansion of the plant. The plant
discharges into Gunpowder Creek at the location shown on the attached Location map.
In order for the City to more accurately evaluate the costs and designs of the alternative treatment
processes, we respectfully request that you provide us with speculative NPDES permit limits for a design
capacity of 2.0 mgd. We would appreciate a timely response to this request so that the City can more
accurately define the processes required for the plant expansion.
If you have any questions, please contact us.
Sincerely,
McGILL ASSOCIATES, P.A.
MIKE WARESAK, P.E.
MW/drj
Enclosure
cc: Mr. Jim Hipp
Mr. T. S. Childers
92207.01
P.O. BOX 2259
ASHEVILLE, NC 28802
704/252-0575 38 ORANGE STREET
704/252-2518 (FAX] ASHEVILLE, NC 28801

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