NC0025712_Instream Assessment_19970509

NPDES DOCUHENT !iCANNINL COVER SC•HEET
ANN
.a.
.,
NPDES Permit:
NC0025712
Hookerton WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Report
Speculative
Limits
Instream Assessment (67b)
Environmental Assessment (EA)
Permit
History
Document Date:
May 9, 1997
This document is printed on reuse paper - ignore ainy
content on the re'rerse side

DIVISION OF WATER QUALITY
May 9, 1997
MEMORANDUM
TO: Jim Mulligan
Robert Tankard
FROM: Jacquelyn M. Nowell a`\N
THRU: Donald L. S
Ruth Swane
Carla Sanderson
SUBJECT: Response to Instream Assessment Request
Town of Hookerton WWTP (EMC WQ # 97-01)
NPDES Permit No. NC0025712
Greene County
Summary and Recommendation
The Instream Assessment Unit (IAU) has reviewed the request for an instream
assessment for the Hookerton WWTP. The Town is requesting a Special Order of Consent
(SOC) because of permit limit exceedances for flow, BOD5, and TSS. The existing design
flow is 0.060 MGD. The monthly average wasteflow for 1996 was 0.0311 MGD. The
total requested SOC flow is 25,000 GPD, which includes 1,000 GPD of industrial flow
and 24,000 GPD of domestic flow. With this additional flow, the post-SOC flow will be
0.0561 MGD. The SOC limits requested are BOD5 = 60 mg/1 (monthly average); 90 mg/1
(weekly average) and TSS = 120 mg/1 (monthly average); 180 mg/I (weekly average).
Hookerton discharges into Contentnea Creek in the Neuse River Basin. The
Contentnea Creek is slow moving and characterized by low stream flows representing a
swamp like system. Review of current Level B model results, a QUAL2E performed in
1987, and current reaeration field data collected by EPA, show that the Contentnea Creek
cannot be evaluated with a steady state one dimensional model. With the very low slopes,
low headwater flow, and the predicted velocities and reaeration rates, the model predicted
that at the requested SOC wasteflow and SOC limits, a DO minimum of 0 mg/1 would
occur 1.5 miles downstream of the Wilson -Hominy Creek WWTP outfall and would
continue for 9 miles. However, field data do not support these conclusions. Given the
most recently collected field data (velocities, reaeration, etc.) the IAU assumes the results
would be similar for a updated QUAL2E. The swampy system of Contentnea Creek
cannot be accurately replicated using the traditional DO modeling tools available to the IAU,
and more sophisticated modeling approaches will need to be researched.
It is recommended that the lowest possible BOD5 limits that can be achievable
during the SOC be given, so as not to cause degradation of this segment of Contentnea
Creek. It may be possible for SOC limits of less than 60 mg/1 be given for BOD5 as a
monthly average. We also recommend that extensive instream monitoring be a condition of
the Order. Instream monitoring recommendations should be as follows:

Instream Assessment for Hookerton WWTP
Page 2
Parameters: Temperature, Dissolved Oxygen, Conductivity
Frequency: 3/wk in April thru October, 1/wk in November thru March
Locations: 1) 100 ft upstream of discharge
2) @ Highway 123 or just upstream of Maury Sanitary District WWTP
3) @ State Road 1004
If you have any questions, please call me at 733-5083, extension 512.
cc: Central Files
WLA File

DIVISION OF ENVIRONMENTAL MANAGEMENT
WATER QUALITY SECTION
March 27, 1997
MEMORANDUM
TO: Ruth Swanek
Instream Assessment Unit
FROM: Robert Tankard (
Washington Regional Office
SUBJECT: Special Order By Consent
EMC WQ NO. 97-01
Town of Hookerton WWTP
Please find enclosed is a request for an instream assessment for
the Town of Hookerton's WWTP. Hookerton is requesting the SOC
because they have not met limits in 1996 and want to. avoid a civil
penalty for future permit violations. In the SOC request, they
state they are planning on a 201 Facilities Plan. The Town has
requested an additional 25,000 gallons of flow, 24,000 domestic and
1,000 industrial. Justification for this flow was not furnished
and a request for the justification has been asked for from the
Town.
Please perform an instream assessment for the flow requested with
BOD and TSS limits being modified from the permit. The WWTP
consists of a three cell lagoon with chlorination.
If you should have any questions concerning this, please call.
attachments: Instream Assessment Request Form
Compliance Evaluation Analysis Report
cc: WaRO
Operations Branch
Central Files

Request Form for In -stream Assessment for 67(b) Analysis
NAME OF FACILITY PERMIT # S 7/ L
COUNTY L A,c REGION PERMIT 1"ED DESIGN FLOW O. 0 (( /M Cb
RECEIVING STREAM C 97c•.JT;)&/-- ( SUBBASIN
REGIONAL CONTACT Rp 79;/<-4k,o
BACKGROUND DATA:
A. Why is SOC needed? (Facility is out of compliance with which effluent limits?)
':AC}D 7“
If out of compliance with Flow limit, is it due to inflow/infiltration?
If I/I is a problem, then how much of the additional flow requested is the I/I?
B. SOC Request:
1. Monthly Average Wasteflow in the last year 0. C) 3 I MGD
(Pre-SOC FIow)
Time period Averaged C1 120 Z through 9 70
2. Current SOC FIow request
(Flow added on during the Order)
Flow:
0•0,2,6 MGD
3. Total plant flow (Post-SOC Flow) Flow: 0. 0 5 b I MGD
(total of 1. and 2. above)
4. Is this an accurate flow balance for plant? Why/why not? y
Are there any facilities that have recently gone off line? ^A'
NOTE: The SOC may not include an addition of wasteflow; therefore B. above may not apply
and the region should fill out all other parts of this form. In cases where the SOC involves
violations of oxygen consuming or toxic limits, an evaluation may be necessary to predict the
water quality standard violations instream.
C. Please attach DMR summary for past year for all permitted parameters. If possible,
include reports from previous years if facility has been under SOC for more than a
year.

D. Briefly explain measures taken during the Order which will enable the facility to be in
. compliance with permit limits at the end of the Order. u, jam„) 0,,,1 T777,s
CURRENT SOC REQUEST:
A. Is request for domestic or industrial waste? If a combination, please specify
percentages. ..q- copU ,mac 722t / / C,3cJ.;Ti-t1.3(.
B. If industrial flow, then what type of industry? Please attach pertinent data.
C. The region proposes the following SOC limits (all limits NOT listed here will remain
as in the current permit):
Conventional Parameters
f► j . i11 (,
f'CD 9 U Mtjl<- r,.l�cyv
/oZG myi4 mo •NT/7,y
71s / O At it_
other parameters
Toxics/Toxicitv
D. What is the basis for these limits? 71),) d 7 /.2 ,r c NT>.J CIV I/ -/4 ✓` C -

OPERATIONS BRANCH - WO Fax:[phone] Mar 20 '97 13:45 P.04/05
1J1LYlLU UI 1LC V../ ['tit I
COMPLIANCE EVALUATION ANALYSIS REPORT PAGE 1
PERMIT--NC0025712 PXPE--001 REPORT PERIOD_ 9602-9701 LOC---E
FACILITY--MOOKERTON WWTP, TOWN OF DESIGN FLOW-- .0600 CLASS--1
LOCATION--HOOKERTON REGION/COUNTY--07 GREENE
50050 00310 00530 00610 31616 50060 00300 00010
MONTH QiMGD BOD RES/TSS NH3*NH4- FEC COLI CHLORINE 17O TEMP
LII.1X1 F .0600 F 30.00 F 90.0 NOL F 200.0 NOL NOL NOL
96/02 .0317 30.00 3:;.0 .C6 .0 10.25
96/03 .0197 18.50 2N_5 1.63 5.3 ' 9.97 12.37
96/04 .0216 8.00 11.8 6.78 1.0 7.35 15.00
96/05 .0294 17.00 31.5 .18 3.0 8.62 21.37
96/06 .32217 36.00F 89.5 .31 2.2 6.67 26.87
96/07 _•0137 33.507 46.5 4.2 8.02 26.50
96/08 .0224 31.00E 49.5 1.57 6.5 6.65 25.70
96/09 .0677F 29.00 43.0 1.07 17.9 7.96 24.37
96/10 .04.43 25.00 50.0 .63 81.9 13.05 20.62
96/11 .0312 32.50F 80.0 .04 124.0 14.24 14.40
96/12 .0394 27.50 51.0 .07 26.5 16.62 10.00
AVERAGE .0311 25.35 46.9 1.23 24.7 9.91 18.85
MAXIMUM .1143 48.00 106.0 7.13 169.0 20.40 28.50
MINIMUM .0007 LESSTi-LE 8.6 .04 LESSTHAN 6.10 7.00
UNIT MGD MG/1... MG/L MG/L #/100ML MG/L MG/L DEG.0

Hookerton WWTP Notes
Contentnea Creek
030407
jmn
Facility requesting SOC for 25,000 GPD additional flow. 24,000 domestic, with 1000
GPD industrial. Currently a 100% domestic facility where treatment consists of a three cell
lagoon with chlorination, need to know where the industrial flow will originate
from, will metals or toxicity monitoring be needed/required during the
SOC. SOC Limits for BOD5 of 60 mg/1 (mo. avg.) 90 mg/1 (daily max). TSS =120 mg/1
(mo. avg.) and 180 mg/1 (da. max.)
Instream Data
Reviewed 1996 and 1995 instream data, DOs averaged above 5 mg/1 in 1996, both
upstream and downstream of Hookerton, except for Sept, 1996 when the DO average was
3.1 mg/1. Monthly September data was averaging above 6 mg/1, before Hurricane Fran hit
N.C. After the storm, DOs instream were <1 mg/1 for the first week , second week
averages between 1.6-2.6 mg/1, and the last week of September averaged 3.2- 3.6 mg/1.
Fecal coliforms averaged less than 200/100m1. No apparent Fecal problems based on the
data.
5/5/97 Telecon w/ Robert Tankard, Washington RO
Questions to ask about the Hookerton SOC 1)What improvements will be made during the
SOC? 2) Facility requested a SOC in late 1992 for BOD5 and TSS.
3) What was done during that period that another SOC is needed five years later.
4) Any possibility for future connection to another facility if there seems to be no
improvement for Hookerton.
I asked Robert what improvements did Hookerton intend to make during the SOC. He said
he didn't know what changes they were purposing. He had written a letter to the Town on
March 20th and they have not responded yet. In the letter, he asked for 1) a summary of
the actions performed under the previous SOC, 2) a summary of actions taken to maximize
the existing facility, and justification for the SOC request for 24,000 GPD domestic flow
and 2000 GPD industrial flow. The only thing Hookerton has said was they were going to
look at completing a 201 Plan. He had heard through a third party that Hookerton was
thinking about tying on to the Snow Hill WWTP, but it has not been confirmed by either
town
I asked about the 1000 GPD of industrial flow they were asking for, when they were
a 100% domestic plant. Asked wouldn't a permit modification be more appropriate. He
said that he didn't know where that flow would originate from. He said
Hookerton probably would not get that part of the SOC without more explanation. He
thinks that the same person requested both SOCs for Hookerton and Snow Hill because
they were nearly identical. Perhaps there was some confusion with the Snow Hill SOC,
regarding the industrial flow.
Will recommend that if the SOC is given, the minimum allowable BOD5 be
given for SOC limits at the discretion of theWaRO. Recommend extensive
instream monitoring during the summer months.

Hookerton SOC Notes
page 2
Parameters: Temperature, Dissolved Oxygen, Conductivity
Frequency: 3/wk in April thru October, 1/wk in November thru
March
Locations: 1) 100 ft upstream of discharge
2) @ Highway 123 or just upstream of Maury Sanitary
District WWTP
3) @ State Road 1004 -Level B model run predicts DO
min. about 4 miles downstream of the Hookerton
plant, This road crossing is the closest place to
monitor.

rvoi
Turkey Creek al SR 1128 [headwaters of Buckhome Rese
Contentnea Creek at 301, below o ggr 9t R 4 Dam
Contentnea Creek at SR 1622 (pt
Conntnea Creek at NC 58. near Stantonmbient Station)
Contantnea Creek at US 13 / 258 [proposed
Contentnea Creek al NC 123 [Ambient Station 02.0915.00001
Contentnea Creels at SR 1004 020917.6690)
Contentnea Creek at Hwy 118 [Ambient Station
Contentnea Creels at mouth
Ut9e Contentnea at SR 1218 [Interaction] 020917.0000]
Uie Contentnea at US 264 [Interaction: Ambient Station
Little Contantnea at SR 1110 [mouth) Ambient Station, headxaters of Bu m Reservoir]
Nahunta Creek at NC 1131;[mouth]
[Proposed (major tributary)
Nahunta Swamp al 58 [ ] m r tributary)
Toisnot Swamp at NCSR 1539 [mouth] ( at°
Taylors Milt Pond impacts
tars below reservior)

Y/14
it/Coo 2 7/2- Woo /( GJr
!9 96 Pri5 •^ ( r
vPf Q
,ZS
z 0 Ic
32.W
8/5.i is /
-g
i
dur-9 9' . ,?y 3.
6.V
f
8 7, !
a. 3 .2 Y. 3
F►S ' ' roa � ('r 6-6. y
/' 1.je4t. /br-a8
rs
a.1 - 3.
/.
4 I.
Z 3. .(
,25.8 G,5--I /ems
7/9s. 2 ‘.. k
7, 2
8
5-19c, 2/),f �.
!Y71" 6,3
723
in
/ 9 9
-c.4
I
0.6 - �• 8
3.L-
/07 .2 Y
23.Y t 7 /Y. 7 -
6.4 I /z/ 2Z
7, I /3Z
5;6 /8 / /o8
/Y/ /
6-S)VI 59,5° 7Z
6.Z
s.S

Wreitv 1241 kii--FP
-71.70 -)0 /c4.4 6rneK
/o/Pc 7
/8. / 7 y
g79c- Al 7 7, 3
2L
fr?,•g4f ilfvf zi,
.17.403-
73t
V. Y /5-7 7/
//d, r 73q3
2.r 4r, 2- 6,07
2 b
Zi, *
CI? 248 451- 231 Yg• g 6,r
a z 7 7
sia, 7 t3—
/41
11/95- z t. Y 4.
3 Y.

,1IGdd 6/1?z.
- At
s�a
a c f
7a /7 (, o 70
9/f b zY 3. / i/ Y
76(0
70
7./
,26 6• $ /6 Z 70 Zb 6,6 //5 80
.z7 7,3
102
27
zo G•Z /oo
g 2� ,sb 32.3 /v8
5.7 /9/ //o
5 1(0 zi 6, NI 1° i'
zZ ,s fW
/04
`(I v, /7 6. y CO 7 L / y

4/C' 0 0 (o / & /an, J,£y£(1 364 Di.f C /
/y9.i . i)c„rl I44
g, o
/7Y
9 2 8 /s- 3 96
q/t$ ,2Y 7 y Zzi
25' 7,r ?p
fAr
viy
r)
/f' erd
LL Y.S' AL 7v
SIC Z 6 c / V/ 77
Z6 ,s', z. 77- 7 0
Cx
I 95- 26-2-
2r ‘,.o /Zd
rl /S Z Z �( 3
21-
/co gv
Z

SUMMER
MODEL RESULTS
Discharger : NC0020842
Receiving Stream : CONTENTNEA CREEK
The End D.O. is 4.98 mg/1.
The End CBOD is 0.94 mg/1.
The End NBOD is 0.32 mg/1..
D0 Min
(mg/1) Milepoint Reach #
WLA WLA WLA
CBOD NBOD DO Waste Flow
(mg/1) (mg/1) (mg/1) (mgd)
Segment 1 4.98 12.15 5
Reach 1 22.50
Reach 2 90.00
Reach 3 0.00
Reach 4 19.50
Reach 5 0.00
18.00 5.00 0.50000
90.00 0.00 ®0.05610
0.00 0.00 0.00000
13.50 6.00 02)0.22500
0.00 0.00 0.00000
SYLAA
(� 14o6/c (t si'Soc
(_4►ic► Di. s0-.
/14 AL,3/ bvti 44-q0 1-1-4, 4-, 6( dtr
,14, d�

*** MODEL SUMMARY DATA ***
Discharger : NC0020842
Receiving Stream : CONTENTNEA CREEK
Summer 7Q10 : 31.4
Design Temperature: 27.0
Subbasin : 030407
Stream Class: C
Winter 7Q10 : 57.7
ILENGTHI SLOPEI VELOCITY 1 DEPTHI Kd 1 Kd 1 Ka 1 Ka 1 K11 I KN I KNR I KNR I SOD 1 SOD
1 mile 1 ft/mil fps 1 ft Idesignl @20° !design I @20° 1 desi gn l @20° ldesi gn l @20° !design l @20°
I I I 1 1 1 1 1 I 1 1 1 1 I
Segment 1 1 8.601 0.101 0.142 1 3.81 1 0.28 1 0.20 1 0.10 1 0.091 0.51 1 0.30 1 0.51 1 0,00 1 0.00 1 0.00
Reach 1 I 1 I 1 1 1 1 1 I 1 1 1 1
I I I 1 1 1 1 1 I
Segment 1 1 0.201 0,101 0.142 1 3.81 1 0.28 1 0.20 1 0.10 1 0.091 0,51 1 0.30 1 0.51 1 0.00 1 0.00 0.00
Reach 2 I 1 I 1 1 1 1 1 I 1 1 1 I
I I I 1 1 1 1 1 I 1 1 1 I I
Segment 1 ( 0.101 0.101 0.149 1 3.92 1 0.28 1 0.20 1 0.11 1 0.091 0,51 1 0.30 1 0.51 1 0.00 1 0.00 1 0.00
Reach 3 I 1 I 1 1 1 1 1 I 1 1 1 I
I I I 1 1 1 1 1 I 1 1 1 I I
Segment 1 1 0.651 0.101 0.150 1 3.93 1 0.28 1 0.20 1 0.11 1 0.091 0.51 1 0.30 1 0.51 1 0.00 1 0.00 1 0.00
Reach 4 I 1 I 1 1 1 1 1 I 1 1 1 I
I I I 1 1 1 1 1 I 1 1 1 I I
Segment 1 1 2.001 0.101 0.151 1 3.95 1 0.28 1 0.20 1 0.11 1 0.091 0.51 0.30 1 0.51 1 0.00 1 0.00 1 0.00
Reach 5 1 I I 1 1 1 1 1 I 1 1 1 I
I Flow 1 CBOD 1 NBOD 1 D.O. I
1 cfs 1 mg/1 1 mg/1 1 mg/1 I
Segment 1 Reach 1
Waste 1 0.775 1 22.500 1 18.000 1 5.000
Headwaters) 31.000 1 2.000 1 1.000 1 7.170
Tributary 1 0.030 1 2.000 1 1.000 1 7.170
* Runoff 1 0.020 1 2.000 1 1.000 1 7.170
Segment 1 Reach 2
Waste 1 0.087 1 90.000 1 90.000
Tributary 1 0.000 1 2.000 1 1.000
* Runoff 1 0.020 1 2.000 1 1.000
Segment 1 Reach 3
Waste 1 0.000
Tributary 1 2.300
* Runoff 1 0.020
0.000
2.000
2.000
0.000
1.000
1.000
Segment 1 Reach 4
Waste 1 0.349 1 19.500 1 13.500
Tributary 1 0.000 1 2.000 1 1.000
* Runoff 1 0.020 1 2.000 1 1.000
0.000
7.170
7.170
0.000
7.170
7.170
6.000
7.170
7.170

aP .4111 11 a t l' sawl l ..J
Waste 1 0.000 1 0.000 1 0.000 I 0.000
Tributary 1 0.390 1 2.000 1 1.000 1 7.170
* Runoff 1 0.020 1 2.000 1 1.000 1 7.170
* Runoff flow is in cfs/mil e

SUMMER
I Seg # I Reach # I Seg Mi I D.O. I CBOD I NBOD I Flow I
1 1 0.00 7.12 2.50 1.41 31.80
1 1 0.20 7.00 2.44 1.35 31.81
1 1 0.40 6.90 2.38 1.29 31.81
1 1 0.60 6.79 2.32 1.24 31.82
1 1 0.80 6.70 2.27 1.18 31.82
1 1 1.00 6.60 2.22 1.13 31.83
1 1 1.20 6.51 2.16 1.08 31.83
1 1 1.40 6.43 2.11 1.04 31.83
1 1 1.60 6.35 2.06 0.99 31.84
1 1 1.80 6.27 2.01 0.95 31.84
1 1 2.00 6.19 1.96 0.91 31.85
1 1 2.20 6.12 1.92 0.87 31.85
1 1 2.40 6.06 1.87 0.83 31.85
1 1 2.60 5.99 1.83 0.80 31.86
1 1 2.80 5.93 1.78 0.76 31.86
1 1 3.00 5.88 1.74 0.73 31.87
1 1 3.20 5.82 1.70 0.70 31.87
1 1 3.40 5.77 1.66 0.67 31.87
1 1 3.60 5.72 1.62 0.64 31.88
1 1 3.80 5.68 1.58 0.61 31.88
1 1 4.00 5.63 1.54 0.58 31.89
1 1 4.20 5.59 1.51 0.56 31.89
1 1 4.40 5.55 1.47 0.54 31.89
1 1 4.60 5.52 1.43 0.51 31.90
1 1 4.80 5.48 1.40 0.49 31.90
1 1 5.00 5.45 1.37 0.47 31.91
1 1 5.20 5.42 1.33 0.45 31.91
1 1 5.40 5.39 1.30 0.43 31.91
1 1 5.60 5.36 1.27 0.41 31.92
1 1 5.80 5.34 1.24 0.39 31.92
1 1 6.00 5.32 1.21 0.38 31.93
1 1 6.20 5.29 1.18 0.36 31.93
1 1 6.40 5.27 1.16 0.34 31.93
1 1 6.60 5.26 1.13 0.33 31.94
1 1 6.80 5.24 1.10 0.32 31.94
1 1 7.00 5.22 1.07 0.30 31.95
1 1 7.20 5.21 1.05 0.29 31.95
1 1 7.40 5.20 1.02 0.28 31.95
1 1 7.60 5.18 1.00 0.26 31.96
1 1 7.80 5.17 0.98 0.25 31.96
1 1 8.00 5.16 0.95 0.24 31.97
1 1 8.20 5.16 0.93 0.23 31.97
1 1 8.40 5.15 0.91 0.22 31.97
1 1 8.60 5.14 0.89 0.21 31.98
1 2 8.60 5.13 1.13 0.46 32.06
1 2 8.65 5.12 1.12 0.45 32.06
1 2 8.70 5.12 1.12 0.45 32.07
1 2 8.75 5.11 1.11 0.44 32.07
1 2 8.80 5.11 1.10 0.44 32.07
1 3 8.80 5.24 1.16 0.47 34.37
1 3 8.90 5.23 1.15 0.46 34.37
1 3 9.00 5.22 1.14 0.45 34.37
1 3 9.10 5.21 1.12 0.45 34.37
1 3 9.20 5.20 1.11 0.44 34.38
1 3 9.30 5.19 1.10 0.43 34.38
1 3 9.40 5.18 1.08 0.42 34.38
1 3 9.50 5.17 1.07 0.41 34.38
1 4 9.50 5.18 1.26 0.54 34.73
1 4 9.55 5.18 1.25 0.54 34.73
1 4 9.60 5.17 1.24 0.53 34.73

1 4
1 4
1 4
1 4
1 4
1 4
1 4
1 4
1 4
1 4
1 5
1 5
1 5
1 5
1 5
1 5
1 5
1 5
1 5
1 5
1 5
Seg # ( Reach
#I
9.70
9.75
9.80
9.85
9.90
9.95
10.00
10.05
10.10
10.15
10.15
10.35
10.55
10.75
10.95
11.15
11.35
11.55
11.75
11.95
12.15
Seg Mi
5.16
5.15
5.15
5.14
5.13
5.13
5.12
5.12
5.11
5.11
5.13
5.11
5.09
5.07
5.05
5.04
5.03
5.01
5.00
4.99
4.98
D.O.
1.23 0.52 34.73
1.22 0.51 34.74
1.21 0.51 34.74
1.21 0.50 34.74
1.20 0.50 34.74
1.19 0.49 34.74
1.19 0.49 34.74
1.18 0.48 34.74
1.17 0.48 34.74
1.17 0.47 34.74
1.18 0.48 35.13
1.15 0.46 35.14
1.12 0.44 35.14
1.10 0.42 35.15
1.07 0.40 35.15
1.05 0.39 35.15
1.03 0.37 35.16
1.00 0.36 35.16
0.98 0.34 35.17
0.96 0.33 35.17
0.94 0.32 35.17
J CBOD I NBOD I Flow I

SUMMER
MODEL RESULTS
Discharger : NC0020842
Receiving Stream : CONTENTNEA CREEK
The End D.O. is 5.07 mg/1.
The End CBOD is 0.87 mg/1.
The End NBOD is 0.27 mg/1.
WLA WLA WLA
DO Min CBOD NBOD DO Waste Flow
(mg/1) Milepoint Reach # (mg/1) (mg/1) (mg/1) (mgd)
Segment 1 5.07
Reach 1
Reach 2
Reach 3
Reach 4
Reach 5
12.15 5
22.50 18.00
90.00 90.00
0.00 0.00
19.50 13.50
0.00 0.00
5.00 6120.50000
0.00 aP0.03110
0.00 0.00000
6.00 L 0.22500
0.00 0.00000
co 511- ffi /(
(fd'oo/Ci.✓fa4 WOre (ea saL -Pi")
M4,/f
0

*** MODEL SUMMARY DATA ***
Discharger NC0020842
Receiving Stream : CONTENTNEA CREEK
Summer 7Q10 : 31.4
Design Temperature: 27.0
Subbasi n : 030407
Stream Class: C
Winter 7Q10 : 57.7
ILENGTH) SLOPE( VELOCITY 1 DEPTH( Kd 1 Kd 1 Ka 1 Ka 1 KN ( KN 1 KNR 1 KNR 1 SOD 1 SOD
I mile 1 ft/mil fps i ft (design) @20° Idesignl @20° 'design l @20° 'design! @20° (design) @20°
I 1 I I I I I I I I I I
Segment 1 1 8.601 0.101 0.142 1 3.81 1 0.28 1 0.20 1 0.10 1 0.091 0.51 1 0.30 1 0.51 1 0.00 ( 0.00 1 0.00
Reach 1 1 I I I I I I I I I I I I
1 1 1 1 1 1 1 1 1 1 1 1 1 1
Segment 1 1 0.201 0.101 0.142 ( 3.81 1 0.28 1 0.20 1 0.10 1 0.091 0.51 1 0.30 1 0.51 1 0.00 0.00 1 0.00
Reach 2 1 I I I I I I I I I I I I
I I I 1 1 1 1 1 1 1 1 1 1 1
Segment 1 1 0.101 0.701 0.149 1 3.92 1 0.28 1 0.20 1 0.11 1 0.091 0.51 1 0.30 1 0.51 1 0.00 1 0.00 1 0.00
Reach 3 1 I I I I I I I I I I I I
I I I 1 1 1 1 1 1 1 1 1 1 1
Segment 1 1 0.651 0.101 0.150 1 3.93 1 0.28 1 0.20 1 0.11 1 0.091 0.51 1 0.30 1 0.51 1 0.00 1 0.00 1 0.00
Reach 4 1 I I I I I I I I I I I I
I I I 1 1 1 1 1 1 1 1 1 1 1
Segment 1 1 2.001 0,101 0.150 1 3.95 1 0.28 1 0.20 1 0.11 1 0.091 0.51 10.30 1 0.51 1 0.00 1 0.00 1 0.00
Reach 5 1 I I I I I I I I I I I I
1 Flow I CBOD 1 NBOD 1 D.O. I
I cfs 1 mg/1 1 mg/1 1 mg/1 I
Segment 1 Reach 1
Waste 1 0.775 1 22.500 1 18.000 1 5.000
Headwaters) 31.000 1 2.000 1 1.000 1 7.170
Tributary 1 0.030 1 2.000 1 1.000 1 7.170
* Runoff 1 0.020 1 2.000 1 1.000 1 7.170
Segment 1 Reach 2
Waste 1 0.048 1 90.000 1 90.000
Tributary 1 0.000 1 2.000 1 1.000
* Runoff 1 0.020 1 2.000 1 1.000
Segment 1 Reach 3
Waste 1 0.000
Tributary 1 2.300
* Runoff 1 0.020
0.000
2.000
2.000
0.000
1.000
1.000
0.000
7.170
7.170
0.000
7.170
7.170
Segment 1 Reach 4
Waste 1 0.349 1 19.500 1 13.500 1 6.000
Tributary 1 0.000 1 2.000 1 1.000 1 7.170
* Runoff 1 0.020 1 2.000 1 1.000 1 7.170

segment 1
Waste
Tributary
* Runoff
Keacn
I 0.000 I 0.000 I 0.000 1 0.000
i 0.390 I 2.000 I 1.000 I 7.170
I 0.020 I 2.000 I 1.000 I 7.170
* Runoff flow is in cfsemi1e

SUMMER
i
Seg # 1 Reach # 1 Seg Mi 1 D.G. 1 CBOD 1 NBOD 1 Flow 1
1 1 0.00 7.12 2.50 1.41 31.80
1 1 0.20 7.00 2.44 1.35 31.81
1 1 0.40 6.90 2.38 1.29 31.81
1 1 0.60 6.79 2.32 1.24 31.82
1 1 0.80 6.70 2.27 1.18 31.82
1 1 1.00 6.60 2.22 1.13 31.83
1 1 1.20 6.51 2.16 1.08 31.83
1 1 1.40 6.43 2.11 1.04 31.83
1 1 1.60 6.35 2.06 0.99 31.84
1 1 1.80 6.27 2.01 0.95 31.84
1 1 2.00 6.19 1.96 0.91 31.85
1 1 2.20 6.12 1.92 0.87 31.85
1 1 2.40 6.06 1.87 0.83 31.85
1 1 2.60 5.99 1.83 0.80 31.86
1 1 2.80 5.93 1.78 0.76 31.86
1 1 3.00 5.88 1.74 0.73 31.87
1 1 3.20 5.82 1.70 0.70 31.87
1 1 3.40 5.77 1.66 0.67 31.87
1 1 3.60 5.72 1.62 0.64 31.88
1 1 3.80 5.68 1.58 0.61 31.88
1 1 4.00 5.63 1.54 0.58 31.89
1 1 4.20 5.59 1.51 0.56 31.89
1 1 4.40 5.55 1.47 0.54 31.89
1 1 4.60 5.52 1.43 0.51 31.90
1 1 4.80 5.48 1.40 0.49 31.90
1 1 5.00 5.45 1.37 0.47 31.91
1 1 5.20 5.42 1.33 0.45 31.91
1 1 5.40 5.39 1.30 0.43 31.91
1 1 5.60 5.36 1.27 0.41 31.92
1 1 5.80 5.34 1.24 0.39 31.92
1 1 6.00 5.32 1.21 0.38 31.93
1 1 6.20 5.29 1.18 0.36 31.93
1 1 6.40 5.27 1.16 0.34 31.93
1 1 6.60 5.26 1.13 0.33 31.94
1 1 6.80 5.24 1.10 0.32 31.94
1 1 7.00 5.22 1.07 0.30 31.95
1 1 7.20 5.21 1.05 0.29 31.95
1 1 7.40 5.20 1.02 0.28 31.95
1 1 7.60 5.18 1.00 0.26 31.96
1 1 7.80 5.17 0.98 0.25 31.96
1 1 8.00 5.16 0.95 0.24 31.97
1 1 8.20 5.16 0.93 0.23 31.97
1 1 8.40 5.15 0.91 0.22 31.97
1 1 8.60 5.14 0.89 0.21 31.98
1 2 8.60 5.13 1.02 0.35 32.03
1 2 8.65 5.13 1.01 0.34 32.03
1 2 8.70 5.13 1.01 0.34 32.03
1 2 8.75 5.12 1.00 0.34 32.03
1 2 8.80 5.12 1.00 0.33 32.03
1 3 8.80 5.26 1.06 0.38 34.33
1 3 8.90 5.25 1.05 0.37 34.33
1 3 9.00 5.24 1.04 0.36 34.33
1 3 9.10 5.23 1.03 0.35 34.34
1 3 9.20 5.23 1.02 0.35 34.34
1 3 9.30 5.22 1.00 0.34 34.34
1 3 9.40 5.21 0.99 0.33 34.34
1 3 9.50 5.21 0.98 0.33 34.34
1 4 9.50 5.22 1.17 0.46 34.69
1 4 9.55 5.21 1.16 0.45 34.69
1 4 9.60 5.20 1.15 0.45 34.69

1 '•P a . W e)
1 4 9.70
1 4 9.75
1 4 9.80
1 4 9.85
1 4 9.90
1 4 9.95
1 4 10.00
1 4 10.05
1 4 10.10
1 4 10.15
1 5 10.15
1 5 10.35
1 5 10.55
1 5 10.75
1 5 10.95
1 5 11.15
1 5 11.35
1 5 11.55
1 5 11.75
1 5 11.95
1 5 12.15
1 Seg # ( Reach # 1 Seg Mi
1
5.19 1.14
5.19 1.14
5.18 1.13
5.18 1.12
5.18 1.12
5.17 1.11
5.17 1.10
5.16 1.10
5.16 1.09
5.15 1.08
5.18 1.09
5.16 1.07
5.14 1.05
5.13 1.02
5.12 1.00
5.11 0.98
5.10 0.96
5.09 0.93
5.08 0.91
5.07 0.89
5.07 0.87
D.O. 1 CBOD
W • �F :J .^F . W J
0.44 34.70
0.44 34.70
0.43 34.70
0.43 34.70
0.42 34.70
0.42 34.70
0.41 34.70
0.41 34.70
0.40 34.70
0.40 34.70
0.41 35.09
0.39 35.10
0.37 35.10
0.36 35.11
0.34 35.11
0.33 35.11
0.32 35.12
0.30 35.12
0.29 35.13
0.28 35.13
0.27 35.13
1 NBOD 1 Flow 1