NC0020567_Speculative Limits_20070123

NPDES DOCIMENT :SCANNING COVER SHEET
NC0020567
Elkin / YVSA WWTP
NPDES Permit:
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Instream Assessment (67b)
Speculative Limits ,.
Environmental Assessment (EA)
Document Date:
January 23, 2007
Thin; document is pri:ited cork reuose paper - igaore ataxy
content on the reirerse aide

Michael F. Easley, Governor
State of North Carolina
William G. Ross, Jr., Secretary
Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
January 23, 2007
Mr. Robert Fuller
Town of Elkin
P.O. Box 857
Elkin, North Carolina 28621
Subject: Speculative Effluent Limits
Elkin WWTP
NPDES Permit #NC0020567
Surly County
Dear Mr. Fuller:
This letter is in response to your request for speculative effluent limits for a proposed expansion to 2.5
MGD at the Elkin WWTP. Currently, this facility is permitted for flows up to 1.8 MGD.
Speculative Limits. Based on available information, speculative effluent limits for the proposed discharge
of 2.5 MGD to the Yadkin River are presented in Table 1. A complete evaluation of these limits and
monitoring frequencies in addition to monitoring requirements for metals and other toxicants will be
addressed upon receipt of a formal NPDES permit modification request.
TABLE. 1. Speculative Limits for Elkin WWTP
Effluent Characteristic
Effluent Limitations
Monthly Average
Weekly Average
Daily Maximum 1
Flow
2.5 MGD
BOD5
30 mg/L
45 mg/L
TSS
, 30 mg/L
45 mg/L
Between 6.0 and 9.0 mg/ L
_pH
Fecal coliform
200/100 ml
400/100 ml
Total residual chlorine
28 ug/L
Chronic Toxicity'
1. The facility will have a chronic whole effluent toxicity (WET) testing requirement at 1.2 %.
Engineering Alternatives Analysis (EAA). Please note that the Division cannot guarantee that an NPDES
permit modification for expansion to 2.5 MGD will be issued with these speculative limits. Final
decisions can only he made after the Division receives and evaluates a formal permit application for the
Towns proposed discharge. In accordance with the North Carolina General Statutes, the practicable
wastewater treatment and disposal alternative with the least adverse impact on the environment is
required to be implemented. Therefore, as a component of all NPDES permit applications for new or
expanding flow, a detailed engineering alternatives analysis (EAA) must be prepared. The EAA must
justify requested flows, and provide an analysis of potential wastewater treatment alternatives.
Alternatives to a surface water discharge, such as spray/drip irrigation, wastewater reuse, or
inflow/infiltration reduction, are considered to be environmentally preferable. A copy of the EAA
requirements is attached to this letter. Permit applications for new or expanding flow will be returned
as incomplete if all EAA requirements are not adequately addressed. If you have any questions
regarding these requirements, please contact the DWQ NPDES Unit at 919-733-5083.
State Environmental Policy Act (SEPA) EA/EIS Requirements. A SEPA EA/EIS document must be
prepared for all projects that 1) need a permit; 2) use public money or affect public lands; and 3) might
have a potential to significantly impact the environment. For existing discharges, significant impact is
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
512 N. Salisbury Street, Raleigh, North Carolina 27604 On the Internet at http://h2o.enr.state.nc.us/
An Equal opportunity/Affirmative Action Employer
NNaone
r Carolina
turally

Page 2
Elkin WWI'P Speculative Limits
defined as an expansion of > 500,000 gpd additional flow. Typically, when an EA is required, the NPDES
Unit will not accept an NPDES permit application for the proposed expansion until the Division has
approved the SEPA document and sent a Finding of No Significant Impact (FONSI) to the State
Clearinghouse for review and comment. However, the Construction Grants and Loans Section has
indicated that if the Elkin WWTP accepts flows from the Town of Jonesville, and the Jonesville WWTP is
decommissioned, then the net increase would be considered below the SEPA threshold and the Elkin
facility would not be required to submit an EA. If you have any questions regarding SEPA EA/EIS
requirements, please contact Larry Horton with the Construction Grants and Loans Section at (919) 715-
6225.
Should you have any questions about these speculative limits or NPDES permitting requirements, please
feel free to contact Toya Fields at [phone], extension 551.
Since r.,iy,
grn A. Wilson, P.E.
Supervisor, Western NPDES Program
Attachment EAA Guidance Document
cc: (with Attachment)
Bradley H. Bucy, P.E., Hobbs, Upchurch & Associates, P.A., 1300. Baxter Street, Suite 108,
Charlotte, NC 28204.
cc: (without Attachment)
Winston-Salem Regional Office, Surface Water Protection
Central Files
NPDES Permit File, NC0020567
Larry Horton, Construction Grants and Loans Section
2

LEVEL B Model
FACT SHEET FOR PERMIT LIMIT DEVELOPMENT
Elkin WWTP
NPDES No. NC0020567
Facility Information
Applicant/Facility Name:
Town of Elkin WWTP
Permitted Flow
1.8 MGD
Type of Waste:
100% Domestic
County:
Surry
Miscellaneous
Receiving Stream:
Yadkin River
Regional Office:
Winston-Salem
Stream Classification:
Stream Index Number:
C
12-(53)
Quad
C15NE
303(d) Listed?:
Level B modeler:
Toya Fields
Subbasin:
03-07-02
Date:
Drainage Area (mi2):
878II
y.
Summer 7Q10 (cfs)
317
Winter 7Q10 (cfs):
454
Average Stream Flow (cfs):
1400
IWC (%) at Permitted Flow:
0.87
ANALYSIS AND DISCUSSION:
Much of the background data for this model was taken from a model developed in 1990 for Chatham
manufacturing which included discharges the Elkin WWTP as well as:
- NC0005266 (formerly Abitibi Price) Louisiana Pacific Corp.
NC0005312 (formerly Chatham Manufacturing) Interface Fabrics.
- NC0021580 Town of Jonesville WWTP
- NC0060691 (formerly Candle Corporation) Blythe Homescents International.
Table 1 summarizes the1990 model inputs and current values. The model was rerun with updated inputs
for all dischargers and the prospective new flow for the Elkin WWTP. Hydrologic characteristics were
left unchanged.
1990 Inputs
Current Inputs
Permit #
Facility
Flow
(MGD)
CBOD
(mg/L)
NBOD
(mg/L)
Flow
(MGD)
CBOD
(mg/L)
NBOD
(mg/L)
NC0005266
Louisiana Pac. Corp
1.60
2070.001
0.00
1.50
3796.321
90.00
NC0005312
Interface Fabrics
4.00
78.802
90.00
4.00
43.082
90.00
NC0021580
Jonesville WWTP
0.31
45.00
90.00
0.40
45.00
23.40 (s)
56.25 (w)
NC0020567
Elkin WWTP
1.00
45.00
90.00
2.50
NC0060691
Blythe Homescents
0.01
45.00
90.00
0.03
45.00
90.00
Notes:
1.
It's not clear what CBOD/BOD5 multiplier was used for Louisiana Pacific Corp in 1990. It is also unclear
why a flow of 1.6 MGD was used. The CBOD value from the model seems low considering the facility's
discharge characteristics. The model was re -run for this segment in the mid-1990s and a multiplier of 4 was
used based on a data analysis. Therefore the value of 4 was used for this updated model run. However this
yielded a significantly higher CBOD value than was used in the past. This value did affect the results of the
level b model.
2. A CBOD/BOD5 multiplier of 3 was used for this discharge.
Elkin WWTP - NC0020567
Level B Model
Page 1

Although the Elkin WWTP is requesting speculative limit for an expansion from 1.8 MGD to 2.5 MGD, an
older run (with a discharge of 1 MGD) was reprocessed for comparison's sake. The increase in Elkin's
wastestream from 1 MGD to 2.5 MGD resulted in a minor decrease in the D.O. sag from 5.42 mg/L to 5.39
mg/L at the point of discharge. CBOD increased from 22.98 mg/L to 23.14 mg/L and NBOD increased
from 3.24 mg/L to 3.84 mg/L.
The removal of the Jonesville discharge resulted in a small increase of the DO levels in the Sandyberry
River (from 6.25 mg/L to 7.44 mg/L) and negligible changes to the Yadkin River.
Model runs with secondary limits were protective of the 5 mg/L D.O. standard. No ammonia limit will
be recommended.
STATE CONTACT:
Western NPDES Program - Level B Modeling Contact: Toya Fields, (919) 733 - 5083, ext. 551
Elkin WWTP — NC0020567
Level B Model
Page 2

itOfuo7s
MODEL RESULTS
SUMMER
ELKIN- 2SMGD
Discharger : ELKIN WWTP- YADKIN DISCHARGES
Receiving Stream : YADKIN RIVER
The End D.O. is 7.11 mg/l.
The End CBOD is 12.88 mg/l.
The End NBOD is 1.92 mg/l.
WLA WLA WLA
DO Min CBOD NBOD DO Waste Flow
(mg/1) Milepoint Reach # (mg/1) (mg/1) (mg/1) (mgd)
Segment 1 5.36 11.10 6
Reach 1
Reach 2
Reach 3
Reach 4
Reach 5
Reach 6
Segment 2 5.34 1.30 1
Reach 1
Reach 2
Reach 3
Reach 4
Segment 3 6.25 0.00 1
Reach 1
Segment 4 5.39 0.00 1
Reach 1 /v,� OJT.9
Reach 2 N
Reach 3
Reach 4
Reach 5
Reach 6
Reach 7
3794.00
0.00
0.00
0.00
0.00
0.00
90.00 0.00 1.50000
0.00 0.00 0.00000
0.00 0.00 0.00000
0.00 0.00 0.00000
0.00 0.00 0.00000
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
43.80 90.00 0.00 4.00000
45.00 23.40
545.00
45.00
0.00
0.00
0.00
0.00
0.00
90.00
90.00
0.00
0.00
0.00
0.00
0.00
0.00 0.40500
0.00 2.50000
0.00 0.03000
0.00 0.00000
0.00 0.00000
0.00 0.00000
0.00 0.00000
0.00 0.00000

Seg # I Reach # I Seg Mi 1 D.O.
1 1 0.00 7.36
1 1 0.10 7.31
1 1 0.20 7.25
1 1 0.30 7.20
1 1 0.40 7.15
1 1 0.50 7.10
1 1 0.60 7.05
1 1 0.70 7.00
1 1 0.80 6.96
1 1 0.90 6.91
1 1 1.00 6.87
1 1 1.10 6.82
1 1 1.20 6.78
1 1 1.30 6.74
1 1 1.40 6.70
1 1 1.50 6.66
1 1 1.60 6.63
1 2 1.60 6.75
1 2 1.65 6.74
1 2 1.70 6.73
1 2 1.75 6.72
1 2 1.80 6.71
1 2 1.85 6.69
1 2 1.90 6.68
1 2 1.95 6.67
1 2 2.00 6.66
1 2 2.05 6.65
1 2 2.10 6.64
1 3 2.10 6.64
1 3 2.13 6.63
1 3 2.16 6.63
1 3 2.19 6.62
1 3 2.22 6.61
1 3 2.25 6.61
1 3 2.28 6.60
1 3 2.31 6.59
1 3 2.34 6.59
1 3 2.37 6.58
1 3 2.40 6.58
1 4 2.40 6.59
1 4 2.50 6.57
1 4 2.60 6.55
1 4 2.70 6.53
1 4 2.80 6.52
1 4 2.90 6.50
1 4 3.00 6.48
1 4 3.10 6.47
1 4 3.20 6.45
1 4 3.30 6.44
1 4 3.40 6.42
1 4 3.50 6.41
1 4 3.60 6.40
1 4 3.70 6.38
1 4 3.80 6.37
1 4 3.90 6.36
1 4 4.00 6.35
SUMMER
SLKIN- 2.� MGD
CBOD 1 NBOD
40.28 1.90
40.20 1.89
40.11 1.89
40.03 1.88
39.95 1.88
39.87 1.87
39.79 1.87
39.70 1.86
39.62 1.86
39.54 1.85
39.46 1.85
39.38 1.84
39.30 1.83
39.22 1.83
39.14 1.82
39.06 1.82
38.98 1.81
33.18 1.69
33.15 1.68
33.12 1.68
33.09 1.68
33.05 1.68
33.02 1.68
32.99 1.67
32.96 1.67
32.93 1.67
32.90 1.67
32.86 1.66
32.86 1.66
32.84 1.66
32.83 1.66
32.81 1.66
32.79 1.66
32.77 1.66
32.75 1.66
32.73 1.66
32.71 1.65
32.69 1.65
32.68 1.65
32.28 1.64
32.22 1.64
32.16 1.63
32.10 1.63
32.04 1.63
31.97 1.62
31.91 1.62
31.85 1.61
31.79 1.61
31.73 1.60
31.67 1.60
31.61 1.60
31.55 1.59
31.49 1.59
31.43 1.58
31.37 1.58
31.31 1.57
Flow I
230.32
230.38
230.44
230.49
230.55
230.61
230.66
230.72
230.77
230.83
230.89
230.94
231.00
231.05
231.11
231.17
231.22
274.22
274.25
274.28
274.31
274.33
274.36
274.39
274.42
274.45
274.47
274.50
274.51
274.53
274.54
274.56
274.58
274.60
274.61
274.63
274.65
274.66
274.68
278.28
278.34
278.39
278.45
278.50
278.56
278.62
278.67
278.73
278.78
278.84
278.90
278.95
279.01
279.06
279.12
279.18

1 4 4.10 6.34 31.26 1.57 279.23
1 4 4.20 6.32 31.20 1.57 279.29
1 4 4.30 6.31 31.14 1.56 279.34
1 4 4.40 6.30 31.08 1.56 279.40
1 4 4.50 6.29 31.02 1.55 279.45
1 4 4.60 6.29 30.96 1.55 279.51
1 4 4.70 6.28 30.90 1.55 279.57
1 4 4.80 6.27 30.84 1.54 279.62
1 4 4.90 6.26 30.78 1.54 279.68
1 5 4.90 6.29 30.10 1.52 286.48
1 5 5.00 6.26 30.04 1.52 286.53
1 5 5.10 6.23 29.98 1.52 286.59
1 5 5.20 6.21 29.92 1.51 286.65
1 5 5.30 6.18 29.86 1.51 286.70
1 5 5.40 6.15 29.80 1.50 286.76
1 5 5.50 6.13 29.74 1.50 286.81
1 5 5.60 6.10 29.68 1.49 286.87
1 5 5.70 6.08 29.62 1.49 286.93
1 5 5.80 6.06 29.57 1.49 286.98
1 5 5.90 6.03 29.51 1.48 287.04
1 5 6.00 6.01 29.45 1.48 287.09
1 5 6.10 5.99 29.39 1.47 287.15
1 5 6.20 5.97 29.33 1.47 287.21
1 5 6.30 5.95 29.27 1.46 287.26
1 5 6.40 5.92 29.21 1.46 287.32
1 5 6.50 5.90 29.15 1.45 287.37
1 5 6.60 5.88 29.10 1.45 287.43
1 6 6.60 5.89 28.93 1.45 289.23
1 6 7.10 5.80 28.64 1.43 289.51
1 6 7.60 5.72 28.36 1.41 289.79
1 6 8.10 5.65 28.08 1.39 290.07
1 6 8.60 5.58 27.80 1.37 290.35
1 6 9.10 5.53 27.53 1.35 290.63
1 6 9.60 5.48 27.25 1.33 290.91
1 6 10.10 5.43 26.98 1.31 291.19
1 6 10.60 5.40 26.72 1.29 291.47
1 6 11.10 5.36 26.45 1.27 291.75
2 1 0.00 5.40 26.09 1.27 296.15
2 1 0.10 5.39 26.04 1.26 296.21
2 1 0.20 5.38 25.99 1.26 296.26
2 1 0.30 5.38 25.94 1.25 296.32
2 1 0.40 5.38 25.89 1.25 296.37
2 1 0.50 5.37 25.83 1.25 296.43
2 1 0.60 5.37 25.78 1.24 296.49
2 1 0.70 5.36 25.73 1.24 296.54
2 1 0.80 5.36 25.68 1.24 296.60
2 1 0.90 5.35 25.63 1.23 296.65
2 1 1.00 5.35 25.58 1.23 296.71
2 1 1.10 5.35 25.53 1.23 296.77
2 1 1.20 5.34 25.48 1.22 296.82
2 1 1.30 5.34 25.43 1.22 296.88
2 2 1.30 5.37 25.07 1.22 301.48
2 2 1.40 5.37 25.02 1.21 301.53
2 2 1.50 5.37 24.98 1.21 301.59
2 2 1.60 5.36 24.93 1.21 301.65
2 2 1.70 5.36 24.88 1.20 301.70
2 2 1.80 5.36 24.83 1.20 301.76
2 2 1.90 5.36 24.78 1.20 301.81
2 2 2.00 5.36 24.73 1.19 301.87
2 2 2.10 5.36 24.69 1.19 301.93

2 2 2.20 5.35 24.64 1.19 301.98
2 2 2.30 5.35 24.59 1.18 302.04
2 2 2.40 5.35 24.54 1.18 302.09
2 2 2.50 5.35 24.49 1.18 302.15
2 2 2.60 5.35 24.45 1.17 302.21
2 2 2.70 5.35 24.40 1.17 302.26
2 2 2.80 5.35 24.35 1.17 302.32
2 2 2.90 5.35 24.30 1.16 302.37
2 2 3.00 5.35 24.26 1.16 302.43
2 2 3.10 5.34 24.21 1.16 302.49
2 2 3.20 5.34 24.16 1.15 302.54
2 2 3.30 5.34 24.11 1.15 302.60
2 2 3.40 5.34 24.07 1.15 302.65
2 2 3.50 5.34 24.02 1.14 302.71
2 2 3.60 5.34 23.97 1.14 302.77
2 3 3.60 5.43 23.07 1.13 315.77
2 3 3.68 5.44 23.03 1.13 315.81
2 3 3.76 5.45 23.00 1.13 315.86
2 3 3.84 5.46 22.97 1.13 315.90
2 3 3.92 5.47 22.93 1.12 315.95
2 3 4.00 5.48 22.90 1.12 315.99
2 3 4.08 5.49 22.87 1.12 316.04
2 3 4.16 5.50 22.83 1.12 316.08
2 3 4.24 5.51 22.80 1.11 316.13
2 3 4.32 5.52 22.76 1.11 316.17
2 3 4.40 5.53 22.73 1.11 316.21
2 4 4.40 5.42 23.14 2.82 322.41
2 4 4.42 5.42 23.13 2.82 322.43
2 4 4.44 5.42 23.12 2.82 322.44
2 4 4.46 5.43 23.11 2.81 322.45
2 4 4.48 5.43 23.10 2.81 322.46
2 4 4.50 5.43 23.09 2.81 322.47
2 4 4.52 5.43 23.09 2.81 322.48
2 4 4.54 5.43 23.08 2.81 322.49
2 4 4.56 5.44 23.07 2.81 322.50
2 4 4.58 5.44 23.06 2.81 322.52
2 4 4.60 5.44 23.05 2.80 322.53
3 1 0.00 6.25 8.87 4.58 3.93
3 1 0.01 6.26 8.86 4.57 3.93
3 1 0.02 6.26 8.85 4.57 3.93
3 1 0.03 6.27 8.84 4.56 3.93
3 1 0.04 6.27 8.83 4.55 3.94
4 1 0.00 5.39 23.14 3.85 330.34
4 1 0.50 5.43 22.90 3.79 331.11
4 1 1.00 5.47 22.67 3.74 331.88
4 1 1.50 5.51 22.44 3.69 332.65
4 1 2.00 5.55 22.21 3.63 333.42
4 1 2.50 5.58 21.98 3.58 334.19
4 1 3.00 5.62 21.76 3.53 334.96
4 1 3.50 5.65 21.53 3.48 335.73
4 2 3.50 5.65 21.54 3.49 335.77
4 2 3.60 5.66 21.49 3.48 335.93
4 2 3.70 5.67 21.45 3.47 336.08
4 2 3.80 5.67 21.41 3.46 336.24
4 2 3.90 5.68 21.36 3.45 336.39
4 2 4.00 5.69 21.32 3.44 336.54
4 2 4.10 5.69 21.27 3.43 336.70
4 2 4.20 5.70 21.23 3.42 336.85
4 2 4.30 5.71 21.19 3.42 337.01
4 2 4.40 5.71 21.14 3.41 337.16

4 2 4.50 5.72 21.10 3.40 337.31
4 2 4.60 5.73 21.06 3.39 337.47
4 2 4.70 5.73 21.02 3.38 337.62
4 2 4.80 5.74 20.97 3.37 337.78
4 2 4.90 5.75 20.93 3.36 337.93
4 2 5.00 5.75 20.89 3.35 338.08
4 2 5.10 5.76 20.85 3.34 338.24
4 2 5.20 5.77 20.80 3.33 338.39
4 3 5.20 5.94 18.86 3.09 377.39
4 3 5.70 5.98 18.70 3.05 377.74
4 3 6.20 6.02 18.54 3.01 378.09
4 3 6.70 6.05 18.38 2.97 378.44
4 3 7.20 6.09 18.22 2.94 378.79
4 3 7.70 6.12 18.07 2.90 379.14
4 3 8.20 6.15 17.91 2.86 379.49
4 3 8.70 6.18 17.76 2.83 379.84
4 3 9.20 6.21 17.61 2.79 380.19
4 3 9.70 6.23 17.45 2.76 380.54
4 4 9.70 6.23 17.45 2.76 380.54
4 4 9.80 6.25 17.43 2.75 380.58
4 4 9.90 6.26 17.40 2.74 380.61
4 4 10.00 6.28 17.37 2.74 380.65
4 4 10.10 6.29 17.34 2.73 380.68
4 4 10.20 6.30 17.32 2.73 380.72
4 4 10.30 6.32 17.29 2.72 380.75
4 4 10.40 6.33 17.26 2.71 380.79
4 4 10.50 6.34 17.23 2.71 380.82
4 4 10.60 6.36 17.21 2.70 380.86
4 4 10.70 6.37 17.18 2.69 380.89
4 4 10.80 6.38 17.15 2.69 380.93
4 4 10.90 6.39 17.13 2.68 380.96
4 4 11.00 6.41 17.10 2.68 381.00
4 4 11.10 6.42 17.07 2.67 381.03
4 4 11.20 6.43 17.04 2.66 381.07
4 4 11.30 6.44 17.02 2.66 381.10
4 4 11.40 6.45 16.99 2.65 381.14
4 4 11.50 6.46 16.96 2.65 381.17
4 5 11.50 6.56 15.45 2.48 424.17
4 5 11.70 6.59 15.40 2.47 424.24
4 5 11.90 6.61 15.35 2.46 424.31
4 5 12.10 6.63 15.31 2.45 424.38
4 5 12.30 6.66 15.26 2.43 424.45
4 5 12.50 6.68 15.21 2.42 424.52
4 5 12.70 6.70 15.17 2.41 424.59
4 5 12.90 6.72 15.12 2.40 424.66
4 5 13.10 6.74 15.07 2.39 424.73
4 5 13.30 6.76 15.03 2.38 424.80
4 5 13.50 6.78 14.98 2.37 424.87
4 5 13.70 6.79 14.94 2.36 424.94
4 5 13.90 6.81 14.89 2.35 425.01
4 5 14.10 6.83 14.85 2.34 425.08
4 5 14.30 6.84 14.80 2.33 425.15
4 5 14.50 6.86 14.76 2.32 425.22
4 5 14.70 6.87 14.71 2.31 425.29
4 6 14.70 6.87 14.71 2.31 425.29
4 6 15.20 6.91 14.59 2.28 425.93
4 6 15.70 6.94 14.46 2.26 426.57
4 6 16.20 6.97 14.34 2.23 427.21
4 6 16.70 6.99 14.22 2.20 427.85
4 6 17.20 7.02 14.10 2.18 428.49

4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
Seg # I
6
6
6
6
6
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
Reach # I
17.70
18.20
18.70
19.20
19.70
19.70
19.90
20.10
20.30
20.50
20.70
20.90
21.10
21.30
21.50
21.70
21.90
22.10
22.30
22.50
Seg Mi I
7.04
7.06
7.08
7.10
7.12
7.12
7.12
7.12
7.12
7.11
7.11
7.11
7.11
7.11
7.11
7.11
7.11
7.11
7.11
7.11
D.O.
13.98
13.86
13.74
13.63
13.51
13.51
13.47
13.42
13.37
13.33
13.28
13.24
13.19
13.15
13.10
13.06
13.01
12.97
12.92
12.88
CBOD
2.15
2.13
2.10
2.08
2.06
2.06
2.05
2.04
2.03
2.02
2.01
2.00
1.99
1.98
1.97
1.96
1.95
1.94
1.93
1.92
I NBOD
429.13
429.77
430.41
431.05
431.69
431.69
431.95
432.20
432.46
432.72
432.97
433.23
433.48
433.74
434.00
434.25
434.51
434.76
435.02
435.28
Flow I

*** MODEL SUMMARY DATA ***
Discharger
Receiving Stream :
Summer 7Q10
Design Temperature:
ELKIN WWTP- YADKIN DISCHARGES Subbasin : 030702
YADKIN RIVER Stream Class: C
314.0 Winter 7Q10 : 450.0
25.0
LENGTH SLOPE VELOCITY DEPTH Kd I Kd I Ka I Ka I KN
mile ft/mi fps ft design e20° design @20° design
Segment 1
Reach 1
1.601 4.00I 0.985 3.95
0.29 10.23 3.86 3.47
0.44
Segment 1
Reach 2
0.501 4.00
1.042
4.19
0.29
0.23
4.09
3.67
0.44
Segment 1
Reach 3
0.30
4.001
1.042 4.19 0.29
0.23 1 4.09
3.67
0.44
Segment 1
Reach 4
2.50
4.00
1.049
4.21
0.29
0.23
4.12
3.69
0.44
Segment 1
Reach 5
1.701 2.60
0.937 1 4.52
0.28
0.22 2.39 2.141
0.44
Segment 1
Reach 6
4.50
2.60
0.941 1 4.54
0.28
0.22
2.40 1 2.15
0.44
Segment 2
Reach 1
1.30
2.60
0.948 1 4.57
0.28
0.22 2.42 2.171
0.44
Segment 2
Reach 2
2.30
2.60
0.955 1 4.59
0.28
0.22
2.44
2.19
0.44
Segment 2
Reach 3
0.80
3.20
1.035
4.51 1 0.29 1 0.23 1 3.25 1 2.91
0.44
Segment 2
Reach 4
0.20
3.20
1.050
4.52
0.29
0.23
3.30
2.96
0.44
Segment 3
Reach 1
0.04
6.70
0.260
1.00
0.31 1 0.25
3.49
3.13
0.44
Segment 4
Reach 1
3.50
3.20
1.069 1 4.56
0.29
0.23
3.36
3.01
0.44

Segment 4
Reach 2
1.70
3.20
1.074 1 4.58
0.29
0.23
3.37
3.02
0.44
Segment 4
Reach 3
4.50
3.20
1.124
4.74 0.29 0.23 3.53 3.17
0.44
Segment 4
Reach 4
1.80
3.901
1.193 4.61
0.29
0.23
4.57
4.10
0.44
Segment 4
Reach 5
3.201
4.00 1.245 4.77
0.30
0.23
4.88 1 4.38
0.44
Segment 4
Reach 6
5.00
4.00
1.249
4.78 1 0.30
0.23
4.90
4.40
0.44
Segment 4
Reach 7
2.801 3.40
1.198
4.91
0.29
0.23 14.00 3.58
0.44
Flow
cfs
Segment 1 Reach 1
Waste 2.325
Headwaters 228.000
Tributary 0.000
* Runoff 0.560
Segment 1
Waste
Tributary
* Runoff
Segment 1
Waste
Tributary
* Runoff
Segment 1
Waste
Tributary
* Runoff
Segment 1
Waste
Tributary
* Runoff
Reach 2
0.000
43.000
0.560
Reach 3
0.000
0.010
0.560
Reach 4
0.000
3.600
0.560
Reach 5
0.000
6.800
0.560
mg/1D mg/1D mg/1
3794.000 I 90.000 I 0.000
2.000 1.000 7.440
2.000 1.000 7.440
2.000 1.000 7.440
0.000 I 0.000 I 0.000
2.000 1.000 7.440
2.000 1.000 7.440
i 0.000
7.500
2.000
0.000
2.000
2.000
0.000
13.500
1.000
0.000
1.000
1.000
0.000 1 0.000
2.000 1.000
2.000 1.000
0.000
7.440
7.440
0.000
7.440
7.440
0.000
7.440
7.440

Segment 1 Reach 6
Waste 0.000
Tributary 1.800
* Runoff 0.560
Segment 2 Reach 1
Waste 0.000
Headwaters 0.000
Tributary 4.400
* Runoff 0.560
Segment 2 Reach 2
Waste 0.000
Tributary 4.600
* Runoff 0.560
Segment 2 Reach 3
Waste 0.000
Tributary 13.000
* Runoff 0.560
Segment 2 Reach 4
Waste 6.200
Tributary 0.000
* Runoff 0.560
Segment 3 Reach 1
Waste 0.628
Headwaters 3.300
Tributary 0.000
* Runoff 0.210
Segment 4 Reach 1
Waste 3.875
Headwaters 0.000
Tributary 0.000
* Runoff 1.540
Segment 4 Reach 2
Waste 0.046
Tributary 0.000
* Runoff 1.540
Segment 4 Reach 3
Waste 0.000
Tributary 39.000
* Runoff 0.700
0.000
2.000
2.000
0.000
2.000
2.000
2.000
0.000
2.000
2.000
0.000
1.000
1.000
0.000
1.000
1.000
1.000
0.000
1.000
1.000
0.000
7.440
7.440
0.000
7.440
7.440
7.440
0.000
7.440
7.440
0.000 1 0.000 1 0.000
2.000 1.000 7.440
2.000 1.000 7.440
43.800
2.000
2.000
90.000
1.000
1.000
45.000 23.400
2.000 1.000
2.000 1.000
2.000 1.000
45.000 90.000
2.000 1.000
2.000 1.000
2.000 1.000
45.000 190.000
2.000 1.000
2.000 1.000
0.000
2.000
2.000
0.000
1.000
1.000
0.000
7.440
7.440
0.000
7.440
7.440
7.440
0.000
7.440
7.440
7.440
0.000
7.440
7.440
0.000
7.440
7.440
Segment 4 Reach 4

Waste
Tributary
* Runoff
Segment 4
Waste
Tributary
* Runoff
Segment 4
Waste
Tributary
* Runoff
Segment 4
Waste
Tributary
* Runoff
0.000
0.000
0.350
Reach 5
0.000
43.000
0.350
Reach 6
0.000
0.000
1.280
Reach 7
0.000
0.000
1.280
0.000
2.000
2.000
0.000
2.000
2.000
0.000
2.000
2.000
0.000
2.000
2.000
* Runoff flow is in cfs/mile
0.000 0.000
1.000 7.440
1.000 7.440
0.000
1.000
1.000
0.000
7.440
7.440
0.000 1 0.000
1.000 7.440
1.000 7.440
0.000
1.000
1.000
0.000
7.440
7.440

MODEL RESULTS
SUMMER
ELKIN 2.5 MGD
JONESVILLE DISCHARGE REMOVED
Discharger : ELKIN WWTP- YADKIN DISCHARGES
Receiving Stream : YADKIN RIVER
The End D.O. is 7.11 mg/l.
The End CBOD is 12.85 mg/l.
The End NBOD is 1.90 mg/l.
WLA WLA WLA
DO Min CBOD NBOD DO Waste Flow
(mg/1) Milepoint Reach # (mg/1) (mg/1) (mg/1) (mgd)
Segment 1 5.36 11.10 6
Reach 1
Reach 2
Reach 3
Reach 4
Reach 5
Reach 6
Segment 2 5.34 1.30 1
Reach 1
Reach 2
Reach 3
Reach 4
Segment 3 7.44 0.00 1
Reach 1
Segment 4 5.40 0.00 1
Reach 1
Reach 2
Reach 3
Reach 4
Reach 5
Reach 6
Reach 7
3794.00
0.00
0.00
0.00
0.00
0.00
90.00 0.00 1.50000
0.00 0.00 0.00000
O .00 0.00 0.00000
O .00 0.00 0.00000
0.00 0.00 0.00000
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
43.80 90.00 0.00 4.00000
0.00 0.00
45.00
45.00
0.00
0.00
0.00
0.00
0.00
90.00
90.00
0.00
O .00
0.00
0.00
O .00
0.00 0.00000
0.00 2.50000
0.00 0.03000
0.00 0.00000
0.00 0.00000
0.00 0.00000
0.00 0.00000
0.00 0.00000

Seg #
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Reach # 1 Seg Mi I D.O.
1 0.00 7.36
1 0.10 7.31
1 0.20 7.25
1 0.30 7.20
1 0.40 7.15
1 0.50 7.10
1 0.60 7.05
1 0.70 7.00
1 0.80 6.96
1 0.90 6.91
1 1.00 6.87
1 1.10 6.82
1 1.20 6.78
1 1.30 6.74
1 1.40 6.70
1 1.50 6.66
1 1.60 6.63
2 1.60 6.75
2 1.65 6.74
2 1.70 6.73
2 1.75 6.72
2 1.80 6.71
2 1.85 6.69
2 1.90 6.68
2 1.95 6.67
2 2.00 6.66
2 2.05 6.65
2 2.10 6.64
3 2.10 6.64
3 2.13 6.63
3 2.16 6.63
3 2.19 6.62
3 2.22 6.61
3 2.25 6.61
3 2.28 6.60
3 2.31 6.59
3 2.34 6.59
3 2.37 6.58
3 2.40 6.58
4 2.40 6.59
4 2.50 6.57
4 2.60 6.55
4 2.70 6.53
4 2.80 6.52
4 2.90 6.50
4 3.00 6.48
4 3.10 6.47
4 3.20 6.45
4 3.30 6.44
4 3.40 6.42
4 3.50 6.41
4 3.60 6.40
4 3.70 6.38
4 3.80 6.37
4 3.90 6.36
4 4.00 6.35
SUMMER
ELKIN 2.5 MGD
JONESVILLE DISCHARGE REMOVED
CBOD I NBOD I Flow I
40.28 1.90 230.32
40.20 1.89 230.38
40.11 1.89 230.44
40.03 1.88 230.49
39.95 1.88 230.55
39.87 1.87 230.61
39.79 1.87 230.66
39.70 1.86 230.72
39.62 1.86 230.77
39.54 1.85 230.83
39.46 1.85 230.89
39.38 1.84 230.94
39.30 1.83 231.00
39.22 1.83 231.05
39.14 1.82 231.11
39.06 1.82 231.17
38.98 1.81 231.22
33.18 1.69 274.22
33.15 1.68 274.25
33.12 1.68 274.28
33.09 1.68 274.31
33.05 1.68 274.33
33.02 1.68 274.36
32.99 1.67 274.39
32.96 1.67 274.42
32.93 1.67 274.45
32.90 1.67 274.47
32.86 1.66 274.50
32.86 1.66 274.51
32.84 1.66 274.53
32.83 1.66 274.54
32.81 1.66 274.56
32.79 1.66 274.58
32.77 1.66 274.60
32.75 1.66 274.61
32.73 1.66 274.63
32.71 1.65 274.65
32.69 1.65 274.66
32.68 1.65 274.68
32.28 1.64 278.28
32.22 1.64 278.34
32.16 1.63 278.39
32.10 1.63 278.45
32.04 1.63 278.50
31.97 1.62 278.56
31.91 1.62 278.62
31.85 1.61 278.67
31.79 1.61 278.73
31.73 1.60 278.78
31.67 1.60 278.84
31.61 1.60 278.90
31.55 1.59 278.95
31.49 1.59 279.01
31.43 1.58 279.06
31.37 1.58 279.12
31.31 1.57 279.18

1 4 4.10 6.34 31.26 1.57 279.23
1 4 4.20 6.32 31.20 1.57 279.29
1 4 4.30 6.31 31.14 1.56 279.34
1 4 4.40 6.30 31.08 1.56 279.40
1 4 4.50 6.29 31.02 1.55 279.45
1 4 4.60 6.29 30.96 1.55 279.51
1 4 4.70 6.28 30.90 1.55 279.57
1 4 4.80 6.27 30.84 1.54 279.62
1 4 4.90 6.26 30.78 1.54 279.68
1 5 4.90 6.29 30.10 1.52 286.48
1 5 5.00 6.26 30.04 1.52 286.53
1 5 5.10 6.23 29.98 1.52 286.59
1 5 5.20 6.21 29.92 1.51 286.65
1 5 5.30 6.18 29.86 1.51 286.70
1 5 5.40 6.15 29.80 1.50 286.76
1 5 5.50 6.13 29.74 1.50 286.81
1 5 5.60 6.10 29.68 1.49 286.87
1 5 5.70 6.08 29.62 1.49 286.93
1 5 5.80 6.06 29.57 1.49 286.98
1 5 5.90 6.03 29.51 1.48 287.04
1 5 6.00 6.01 29.45 1.48 287.09
1 5 6.10 5.99 29.39 1.47 287.15
1 5 6.20 5.97 29.33 1.47 287.21
1 5 6.30 5.95 29.27 1.46 287.26
1 5 6.40 5.92 29.21 1.46 287.32
1 5 6.50 5.90 29.15 1.45 287.37
1 5 6.60 5.88 29.10 1.45 287.43
1 6 6.60 5.89 28.93 1.45 289.23
1 6 7.10 5.80 28.64 1.43 289.51
1 6 7.60 5.72 28.36 1.41 289.79
1 6 8.10 5.65 28.08 1.39 290.07
1 6 8.60 5.58 27.80 1.37 290.35
1 6 9.10 5.53 27.53 1.35 290.63
1 6 9.60 5.48 27.25 1.33 290.91
1 6 10.10 5.43 26.98 1.31 291.19
1 6 10.60 5.40 26.72 1.29 291.47
1 6 11.10 5.36 26.45 1.27 291.75
2 1 0.00 5.40 26.09 1.27 296.15
2 1 0.10 5.39 26.04 1.26 296.21
2 1 0.20 5.38 25.99 1.26 296.26
2 1 0.30 5.38 25.94 1.25 296.32
2 1 0.40 5.38 25.89 1.25 296.37
2 1 0.50 5.37 25.83 1.25 296.43
2 1 0.60 5.37 25.78 1.24 296.49
2 1 0.70 5.36 25.73 1.24 296.54
2 1 0.80 5.36 25.68 1.24 296.60
2 1 0.90 5.35 25.63 1.23 296.65
2 1 1.00 5.35 25.58 1.23 296.71
2 1 1.10 5.35 25.53 1.23 296.77
2 1 1.20 5.34 25.48 1.22 296.82
2 1 1.30 5.34 25.43 1.22 296.88
2 2 1.30 5.37 25.07 1.22 301.48
2 2 1.40 5.37 25.02 1.21 301.53
2 2 1.50 5.37 24.98 1.21 301.59
2 2 1.60 5.36 24.93 1.21 301.65
2 2 1.70 5.36 24.88 1.20 301.70
2 2 1.80 5.36 24.83 1.20 301.76
2 2 1.90 5.36 24.78 1.20 301.81
2 2 2.00 5.36 24.73 1.19 301.87
2 2 2.10 5.36 24.69 1.19 301.93

2 2 2.20 5.35 24.64 1.19 301.98
2 2 2.30 5.35 24.59 1.18 302.04
2 2 2.40 5.35 24.54 1.18 302.09
2 2 2.50 5.35 24.49 1.18 302.15
2 2 2.60 5.35 24.45 1.17 302.21
2 2 2.70 5.35 24.40 1.17 302.26
2 2 2.80 5.35 24.35 1.17 302.32
2 2 2.90 5.35 24.30 1.16 302.37
2 2 3.00 5.35 24.26 1.16 302.43
2 2 3.10 5.34 24.21 1.16 302.49
2 2 3.20 5.34 24.16 1.15 302.54
2 2 3.30 5.34 24.11 1.15 302.60
2 2 3.40 5.34 24.07 1.15 302.65
2 2 3.50 5.34 24.02 1.14 302.71
2 2 3.60 5.34 23.97 1.14 302.77
2 3 3.60 5.43 23.07 1.13 315.77
2 3 3.68 5.44 23.03 1.13 315.81
2 3 3.76 5.45 23.00 1.13 315.86
2 3 3.84 5.46 22.97 1.13 315.90
2 3 3.92 5.47 22.93 1.12 315.95
2 3 4.00 5.48 22.90 1.12 315.99
2 3 4.08 5.49 22.87 1.12 316.04
2 3 4.16 5.50 22.83 1.12 316.08
2 3 4.24 5.51 22.80 1.11 316.13
2 3 4.32 5.52 22.76 1.11 316.17
2 3 4.40 5.53 22.73 1.11 316.21
2 4 4.40 5.42 23.14 2.82 322.41
2 4 4.42 5.42 23.13 2.82 322.43
2 4 4.44 5.42 23.12 2.82 322.44
2 4 4.46 5.43 23.11 2.81 322.45
2 4 4.48 5.43 23.10 2.81 322.46
2 4 4.50 5.43 23.09 2.81 322.47
2 4 4.52 5.43 23.09 2.81 322.48
2 4 4.54 5.43 23.08 2.81 322.49
2 4 4.56 5.44 23.07 2.81 322.50
2 4 4.58 5.44 23.06 2.81 322.52
2 4 4.60 5.44 23.05 2.80 322.53
3 1 0.00 7.44 2.00 1.00 3.30
3 1 0.01 7.44 2.00 1.00 3.30
3 1 0.02 7.45 2.00 1.00 3.30
3 1 0.03 7.45 2.00 1.00 3.31
3 1 0.04 7.46 1.99 1.00 3.31
4 1 0.00 5.40 23.10 3.81 329.71
4 1 0.50 5.44 22.86 3.76 330.48
4 1 1.00 5.48 22.63 3.70 331.25
4 1 1.50 5.52 22.40 3.65 332.02
4 1 2.00 5.55 22.17 3.60 332.79
4 1 2.50 5.59 21.94 3.55 333.56
4 1 3.00 5.63 21.71 3.50 334.33
4 1 3.50 5.66 21.49 3.45 335.10
4 2 3.50 5.66 21.50 3.46 335.15
4 2 3.60 5.67 21.45 3.45 335.30
4 2 3.70 5.67 21.41 3.44 335.45
4 2 3.80 5.68 21.36 3.43 335.61
4 2 3.90 5.69 21.32 3.42 335.76
4 2 4.00 5.70 21.28 3.41 335.92
4 2 4.10 5.70 21.23 3.40 336.07
4 2 4.20 5.71 21.19 3.39 336.22
4 2 4.30 5.72 21.15 3.38 336.38
4 2 4.40 5.72 21.10 3.37 336.53

4 2 4.50 5.73 21.06 3.36 336.69
4 2 4.60 5.74 21.02 3.35 336.84
4 2 4.70 5.74 20.98 3.34 336.99
4 2 4.80 5.75 20.93 3.33 337.15
4 2 4.90 5.75 20.89 3.32 337.30
4 2 5.00 5.76 20.85 3.32 337.46
4 2 5.10 5.77 20.80 3.31 337.61
4 2 5.20 5.77 20.76 3.30 337.76
4 3 5.20 5.95 18.82 3.06 376.76
4 3 5.70 5.99 18.66 3.02 377.11
4 3 6.20 6.02 18.50 2.98 377.46
4 3 6.70 6.06 18.34 2.95 377.81
4 3 7.20 6.09 18.18 2.91 378.16
4 3 7.70 6.12 18.03 2.87 378.51
4 3 8.20 6.15 17.87 2.84 378.86
4 3 8.70 6.18 17.72 2.80 379.21
4 3 9.20 6.21 17.57 2.77 379.56
4 3 9.70 6.24 17.42 2.73 379.91
4 4 9.70 6.24 17.42 2.73 379.91
4 4 9.80 6.25 17.39 2.72 379.95
4 4 9.90 6.27 17..36 2.72 379.98
4 4 10.00 6.28 17.33 2.71 380.02
4 4 10.10 6.30 17.31 2.71 380.05
4 4 10.20 6.31 17.28 2.70 380.09
4 4 10.30 6.32 17.25 2.69 380.12
4 4 10.40 6.34 17.22 2.69 380.16
4 4 10.50 6.35 17.20 2.68 380.19
4 4 10.60 6.36 17.17 2.67 380.23
4 4 10.70 6.37 17.14 2.67 380.26
4 4 10.80 6.39 17.11 2.66 380.30
4 4 10.90 6.40 17.09 2.66 380.33
4 4 11.00 6.41 17.06 2.65 380.37
4 4 11.10 6.42 17.03 2.64 380.40
4 4 11.20 6.43 17.01 2.64 380.44
4 4 11.30 6.44 16.98 2.63 380.47
4 4 11.40 6.46 16.95 2.63 380.51
4 4 11.50 6.47 16.93 2.62 380.54
4 5 11.50 6.56 15.41 2.46 423.54
4 5 11.70 6.59 15.36 2.44 423.61
4 5 11.90 6.62 15.32 2.43 423.68
4 5 12.10 6.64 15.27 2.42 423.75
4 5 12.30 6.66 15.22 2.41 423.82
4 5 12.50 6.68 15.18 2.40 423.89
4 5 12.70 6.70 15.13 2.39 423.96
4 5 12.90 6.72 15.09 2.38 424.03
4 5 13.10 6.74 15.04 2.37 424.10
4 5 13.30 6.76 14.99 2.36 424.17
4 5 13.50 6.78 14.95 2.35 424.24
4 5 13.70 6.80 14.90 2.34 424.31
4 5 13.90 6.81 14.86 2.33 424.38
4 5 14.10 6.83 14.81 2.32 424.45
4 5 14.30 6.85 14.77 2.31 424.52
4 5 14.50 6.86 14.72 2.30 424.59
4 5 14.70 6.87 14.68 2.29 424.66
4 6 14.70 6.87 14.68 2.29 424.66
4 6 15.20 6.91 14.55 2.26 425.30
4 6 15.70 6.94 14.43 2.23 425.94
4 6 16.20 6.97 14.31 2.21 426.58
4 6 16.70 ' 7.00 14.19 2.18 427.22
4 6 17.20 7.02 14.07 2.16 427.86

4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
Seg #
6
6
6
6
6
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
Reach #
17.70
18.20
18.70
19.20
19.70
19.70
19.90
20.10
20.30
20.50
20.70
20.90
21.10
21.30
21.50
21.70
21.90
22.10
22.30
22.50
Seg Mi I
7.05
7.07
7.09
7.11
7.12
7.12
7.12
7.12
7.12
7.12
7.12
7.11
7.11
7.11
7.11
7.11
7.11
7.11
7.11
7.11
D.O.
13.95
13.83
13.71
13.60
13.48
13.48
13.43
13.39
13.34
13.30
13.25
13.20
13.16
13.11
13.07
13.02
12.98
12.93
12.89
12.85
CBOD
2.13
2.11
2.08
2.06
2.04
2.04
2.03
2.02
2.01
2.00
1.99
1.98
1.97
1.96
1.95
1.94
1.93
1.92
1.91
1.90
I NBOD
428.50
429.14
429.78
430.42
431.06
431.06
431.32
431.58
431.83
432.09
432.34
432.60
432.86
433.11
433.37
433.62
433.88
434.14
434.39
434.65
Flow I

i/,INo 7
MODEL RESULTS
Discharger : CHATHAM MFG CO. - ELKIN
Receiving Stream : YADKIN RIVER
SUMMER
1990 MODEL RERUN WITH 2007
DISCHARGER INPUTS
The End D.O. is 7.15 mg/1.
The End CBOD is 12.76 mg/l.
The End NBOD is 1.64 mg/l.
Segment 1
Reach 1
Reach 2
Reach 3
Reach 4
Reach 5
Reach 6
WLA WLA WLA
DO Min CBOD NBOD DO Waste Flow
(mg/1) Milepoint Reach # (mg/1) (mg/1) (mg/1) (mgd)
5.36 I 11.10 6
,CDUISiANa f ,FIc >3794.00
0.00
( fjrN,erl(7 IflBl 6orf) o.00
0.00
0.00
0.00
Segment 2 5.34 1.30 1
Reach 1 0.00
Reach 2 0.00
Reach 3 0.00
Reach 4 MAWYtf FOO4CS 543.80
( marl i Ch�,4hc' a
Segment 3 6 25 0.00 1
Reach 1 5O Jt3 Vi u..6 wtj"ie 345 . 00
Segment 4
Reach 1
Reach 2
Reach 3
Reach 4
Reach 5
Reach 6
Reach 7
5.42 0.00 1
gl vU tAi w ri9 45.00
gLyVIE H-cfr7ES Cf,froTS �45.00
eti4die cyt) o . 0 0
0.00
0.00
0.00
0.00
90.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
90.00
23.40
90.00
90.00
0.00
0.00
0.00
0.00
0.00
0.00 1.50000
0.00 0.00000
0.00 0.00000
0.00 0.00000
0.00 0.00000
0.00 0.00000
0.00 0.00000
0.00 0.00000
0.00 0.00000
0.00 4.00000
0.00 0.40500
0.00 1.00000
0.00 0.03000
0.00 0.00000
0.00 0.00000
0.00 0.00000
0.00 0.00000
0.00 0.00000

Reach # I Seg Mi I D.O.
1 0.00 7.36
1 0.10 7.31
1 0.20 7.25
1 0.30 7.20
1 0.40 7.15
1 0.50 7.10
1 0.60 7.05
1 0.70 7.00
1 0.80 6.96
1 0.90 6.91
1 1.00 6.87
1 1.10 6.82
1 1.20 6.78
1 1.30 6.74
1 1.40 6.70
1 1.50 6.66
1 1.60 6.63
2 1.60 6.75
2 1.65 6.74
2 1.70 6.73
2 1.75 6.72
2 1.80 6.71
2 1.85 6.69
2 1.90 6.68
2 1.95 6.67
2 2.00 6.66
2 2.05 6.65
2 2.10 6.64
3 2.10 6.64
3 2.13 6.63
3 2.16 6.63
3 2.19 6.62
3 2.22 6.61
3 2.25 6.61
3 2.28 6.60
3 2.31 6.59
3 2.34 6.59
3 2.37 6.58
3 2.40 6.58
4 2.40 6.59
4 2.50 6.57
4 2.60 6.55
4 2.70 6.53
4 2.80 6.52
4 2.90 6.50
4 3.00 6.48
4 3.10 6.47
4 3.20 6.45
4 3.30 6.44
4 3.40 6.42
4 3.50 6.41
4 3.60 6.40
4 3.70 6.38
4 3.80 6.37
4 3.90 6.36
4 4.00 6.35
CBOD
40.28
40.20
40.11
40.03
39.95
39.87
39.79
39.70
39.62
39.54
39.46
39.38
39.30
39.22
39.14
39.06
38.98
33.18
33.15
33.12
33.09
33.05
33.02
32.99
32.96
32.93
32.90
32.86
32.86
32.84
32.83
32.81
32.79
32.77
32.75
32.73
32.71
32.69
32.68
32.28
32.22
32.16
32.10
32.04
31.97
31.91
31.85
31.79
31.73
31.67
31.61
31.55
31.49
31.43
31.37
31.31
SUMMER
1990 MODEL RERUN WITH
DISCHARGER INPUTS
I NBOD I Flow I
1.90
1.89
1.89
1.88
1.88
1.87
1.87
1.86
1.86
1.85
1.85
1.84
1.83
1.83
1.82
1.82
1.81
1.69
1.68
1.68
1.68
1.68
1.68
1.67
1.67
1.67
1.67
1.66
1.66
1.66
1.66
1.66
1.66
1.66
1.66
1.66
1.65
1.65
1.65
1.64
1.64
1.63
1.63
1.63
1.62
1.62
1.61
1.61
1.60
1.60
1.60
1.59
1.59
1.58
1.58
1.57
230.32
230.38
230.44
230.49
230.55
230.61
230.66
230.72
230.77
230.83
230.89
230.94
231.00
231.05
231.11
231.17
231.22
274.22
274.25
274.28
274.31
274.33
274.36
274.39
274.42
274.45
274.47
274.50
274.51
274.53
274.54
274.56
274.58
274.60
274.61
274.63
274.65
274.66
274.68
278.28
278.34
278.39
278.45
278.50
278.56
278.62
278.67
278.73
278.78
278.84
278.90
278.95
279.01
279.06
279.12
279.18
2007

. 1 4 4.10 6.34 31.26 1.57 279.23
1 4 4.20 6.32 31.20 1.57 279.29
1 4 4.30 6.31 31.14 1.56 279.34
1 4 4.40 6.30 31.08 1.56 279.40
1 4 4.50 6.29 31.02 1.55 279.45
1 4 4.60 6.29 30.96 1.55 279.51
1 4 4.70 6.28 30.90 1.55 279.57
1 4 4.80 6.27 30.84 1.54 279.62
1 4 4.90 6.26 30.78 1.54 279.68
1 5 4.90 6.29 30.10 1.52 286.48
1 5 5.00 6.26 30.04 1.52 286.53
1 5 5.10 6.23 29.98 1.52 286.59
1 5 5.20 6.21 29.92 1.51 286.65
1 5 5.30 6.18 29.86 1.51 286.70
1 5 5.40 6.15 29.80 1.50 286.76
1 5 5.50 6.13 29.74 1.50 286.81
1 5 5.60 6.10 29.68 1.49 286.87
1 5 5.70 6.08 29.62 1.49 286.93
1 5 5.80 6.06 29.57 1.49 286.98
1 5 5.90 6.03 29.51 1.48 287.04
1 5 6.00 6.01 29.45 1.48 287.09
1 5 6.10 5.99 29.39 1.47 287.15
1 5 6.20 5.97 29.33 1.47 287.21
1 5 6.30 5.95 29.27 1.46 287.26
1 5 6.40 5.92 29.21 1.46 287.32
1 5 6.50 5.90 29.15 1.45 287.37
1 5 6.60 5.88 29.10 1.45 287.43
1 6 6.60 5.89 28.93 1.45 289.23
1 6. 7.10 5.80 28.64 1.43 289.51
1 6 7.60 5.72 28.36 1.41 289.79
1 6 8.10 5.65 28.08 1.39 290.07
1 6 8.60 5.58 27.80 1.37 290.35
1 6 9.10 5.53 27.53 1.35 290.63
1 6 9.60 5.48 27.25 1.33 290.91
1 6 10.10 5.43 26.98 1.31 291.19
1 6 10.60 5.40 26.72 1.29 291.47
1 6 11.10 5.36 26.45 1.27 291.75
2 1 0.00 5.40 26.09 1.27 296.15
2 1 0.10 5.39 26.04 1.26 296.21
2 1 0.20 5.38 25.99 1.26 296.26
2 1 0.30 5.38 25.94 1.25 296.32
2 1 0.40 5.38 25.89 1.25 296.37
2 1 0.50 5.37 25.83 1.25 296.43
2 1 0.60 5.37 25.78 1.24 296.49
2 1 0.70 5.36 25.73 1.24 296.54
2 1 0.80 5.36 25.68 1.24 296.60
2 1 0.90 5.35 25.63 1.23 296.65
2 1 1.00 5.35 25.58 1.23 296.71
2 1 1.10 5.35 25.53 1.23 296.77
2 1 1.20 5.34 25.48 1.22 296.82
2 1 1.30 5.34 25.43 1.22 296.88
2 2 1.30 5.37 25.07 1.22 301.48
2 2 1.40 5.37 25.02 1.21 301.53
2 2 1.50 5.37 24.98 1.21 301.59
2 2 1.60 5.36 24.93 1.21 301.65
2 2 1.70 5.36 24.88 1.20 301.70
2 2 1.80 5.36 24.83 1.20 301.76
2 2 1.90 5.36 24.78 1.20 301.81
2 2 2.00 5.36 24.73 1.19 301.87
2 2 2.10 5.36 24.69 1.19 301.93

2 2 2.20 5.35 24.64 1.19 301.98
2 2 2.30 5.35 24.59 1.18 302.04
2 2 2.40 5.35 24.54 1.18 302.09
2 2 2.50 5.35 24.49 1.18 302.15
2 2 2.60 5.35 24.45 1.17 302.21
2 2 2.70 5.35 24.40 1.17 302.26
2 2 2.80 5.35 24.35 1.17 302.32
2 2 2.90 5.35 24.30 1.16 302.37
2 2 3.00 5.35 24.26 1.16 302.43
2 2 3.10 5.34 24.21 1.16 302.49
2 2 3.20 5.34 24.16 1.15 302.54
2 2 3.30 5.34 24.11 1.15 302.60
2 2 3.40 5.34 24.07 1.15 302.65
2 2 3.50 5.34 24.02 1.14 302.71
2 2 3.60 5.34 23.97 1.14 302.77
2 3 3.60 5.43 23.07 1.13 315.77
2 3 3.68 5.44 23.03 1.13 315.81
2 3 3.76 5.45 23.00 1.13 315.86
2 3 3.84 5.46 22.97 1.13 315.90
2 3 3.92 5.47 22.93 1.12 315.95
2 3 4.00 5.48 22.90 1.12 315.99
2 3 4.08 5.49 22.87 1.12 316.04
2 3 4.16 5.50 22.83 1.12 316.08
2 3 4.24 5.51 22.80 1.11 316.13
2 3 4.32 5.52 22.76 1.11 316.17
2 3 4.40 5.53 22.73 1.11 316.21
2 4 4.40 5.42 23.14 2.82 322.41
2 4 4.42 5.42 23.13 2.82 322.43
2 4 4.44 5.42 23.12 2.82 322.44
2 4 4.46 5.43 23.11 2.81 322.45
2 4 4.48 5.43 23.10 2.81 322.46
2 4 4.50 5.43 23.09 2.81 322.47
2 4 4.52 5.43 23.09 2.81 322.48
2 4 4.54 5.43 23.08 2.81 322.49
2 4 4.56 5.44 23.07 2.81 322.50
2 4 4.58 5.44 23.06 2.81 322.52
2 4 4.60 5.44 23.05 2.80 322.53
3 1 0.00 6.25 8.87 4.58 3.93
3 1 0.01 6.26 8.86 4.57 3.93
3 1 0.02 6.26 8.85 4.57 3.93
3 1 0.03 6.27 8.84 4.56 3.93
3 1 0.04 6.27 8.83 4.55 3.94
4 1 0.00 5.42 22.98 3.24 328.01
4 1 0.50 5.47 22.75 3.19 328.78
4 1 1.00 5.51 22.51 3.15 329.55
4 1 1.50 5.56 22.28 3.10 330.32
4 1 2.00 5.60 22.05 3.06 331.09
4 1 2.50 5.64 21.83 3.01 331.86
4 1 3.00 5.67 21.60 2.97 332.63
4 1 3.50 5.71 21.38 2.93 333.40
4 2 3.50 5.71 21.39 2.94 333.45
4 2 3.60 5.72 21.34 2.93 333.60
4 2 3.70 5.72 21.30 2.93 333.76
4 2 3.80 5.73 21.25 2.92 333.91
4 2 3.90 5.74 21.21 2.91 334.07
4 2 4.00 5.75 21.17 2.90 334.22
4 2 4.10 5.75 21.12 2.89 334.37
4 2 4.20 5.76 21.08 2.88 334.53
4 2 4.30 5.77 21.04 2.88 334.68
4 2 4.40 5.77 20.99 2.87 334.84

. 4 2 4.50 5.78 20.95 2.86 334.99
4 2 4.60 5.79 20.91 2.85 335.14
4 2 4.70 5.79 20.86 2.84 335.30
4 2 4.80 5.80 20.82 2.84 335.45
4 2 4.90 5.81 20.78 2.83 335.61
4 2 5.00 5.81 20.74 2.82 335.76
4 2 5.10 5.82 20.69 2.81 335.91
4 2 5.20 5.83 20.65 2.80 336.07
4 3 5.20 6.00 18.71 2.62 375.07
4 3 5.70 6.04 18.55 2.58 375.42
4 3 6.20 6.07 18.39 2.55 375.77
4 3 6.70 6.11 18.23 2.52 376.12
4 3 7.20 6.14 18.08 2.49 376.47
4 3 7.70 6.18 17.92 2.46 376.82
4 3 8.20 6.21 17.77 2.43 377.17
4 3 8.70 6.24 17.61 2.40 377.52
4 3 9.20 6.26 17.46 2.37 377.87
4 3 9.70 6.29 17.31 2.34 378.22
4 4 9.70 6.29 17.31 2.34 378.22
4 4 9.80 6.31 17.29 2.33 378.25
4 4 9.90 6.32 17.26 2.33 378.29
4 4 10.00 6.33 17.23 2.32 378.32
4 4 10.10 6.35 17.20 2.31 378.36
4 4 10.20 6.36 17.18 2.31 378.39
4 4 10.30 6.37 17.15 2.30 378.43
4 4 10.40 6.39 17.12 2.30 378.46
4 4 10.50 6.40 17.09 2.29 378.50
4 4 10.60 6.41 17.07 2.29 378.53
4 4 10.70 6.42 17.04 2.28 378.57
4 4 10.80 6.44 17.01 2.28 378.60
4 4 10.90 6.45 16.99 2.27 378.64
4 4 11.00 6.46 16.96 2.27 378.67
4 4 11.10 6.47 16.93 2.26 378.71
4 4 11.20 6.48 16.90 2.26 378.74
4 4 11.30 6.49 16.88 2.25 378.78
4 4 11.40 6.50 16.85 2.25 378.81
4 4 11.50 6.51 16.82 2.24 378.85
4 5 11.50 6.61 15.31 2.11 421.85
4 5 11.70 6.63 15.27 2.10 421.92
4 5 11.90 6.66 15.22 2.10 421.99
4 5 12.10 6.68 15.17 2.09 422.06
4 5 12.30 6.70 15.13 2.08 422.13
4 5 12.50 6.72 15.08 2.07 422.20
4 5 12.70 6.74 15.03 2.06 422.27
4 5 12.90 6.76 14.99 2.05 422.34
4 5 13.10 6.78 14.94 2.04 422.41
4 5 13.30 6.80 14.90 2.03 422.48
4 5 13.50 6.82 14.85 2.02 422.55
4 5 13.70 6.84 14.81 2.01 422.62
4 5 13.90 6.85 14.76 2.00 422.69
4 5 14.10 6.87 14.72 2.00 422.76
4 5 14.30 6.88 14.67 1.99 422.83
4 5 14.50 6.90 14.63 1.98 422.90
4 5 14.70 6.91 14.58 1.97 422.97
4 6 14.70 6.91 14.58 1.97 422.97
4 6 15.20 6.95 14.46 1.95 423.61
4 6 15.70 6.98 14.34 1.92 424.25
4 6 16.20 7.01 14.21 1.90 424.89
4 6 16.70 7.03 14.09 1.88 425.53
4 6 17.20 7.06 13.97 1.86 426.17

1
-4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
Seg #
6
6
6
6
6
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
Reach #
17.70
18.20
18.70
19.20
19.70
19.70
19.90
20.10
20.30
20.50
20.70
20.90
21.10
21.30
21.50
21.70
21.90
22.10
22.30
22.50
Seg Mi I
7.08
7.10
7.12
7.14
7.16
7.16
7.15
7.15
7.15
7.15
7.15
7.15
7.15
7.15
7.15
7.14
7.14
7.14
7.15
7.15
D.O.
13.85
13.74
13.62
13.50
13.39
13.39
13.34
13.30
13.25
13.21
13.16
13.11
13.07
13.02
12.98
12.93
12.89
12.85
12.80
12.76
CBOD
1.84
1.82
1.80
1.78
1.76
1.76
1.75
1.74
1.73
1.72
1.71
1.71
1.70
1.69
1.68
1.67
1.67
1.66
1.65
1.64
I NBOD
426.81
427.45
428.09
428.73
429.37
429.37
429.62
429.88
430.14
430.39
430.65
430.90
431.16
431.42
431.67
431.93
432.18
432.44
432.70
432.95
Flow I

*** MODEL SUMMARY DATA ***
Discharger
Receiving Stream :
Summer 7Q10
Design Temperature:
CHATHAM MFG CO. - ELKIN Subbasin : 030702
YADKIN RIVER Stream Class: C
314.0 Winter 7Q10 : 450.0
25.0
LENGTH SLOPE VELOCITY I DEPTH Kd I Kd I Ka 1 Ka 1 KM
mile ft/mi fps ft design @20° design @20° design
Segment 1
Reach 1
1.60
4.00I 0.985 13.95
0.29
0.23 3.86 I 3.47
0.44
Segment 1
Reach 2
0.50
4.00
1.042 14.19
0.29
0.23
4.09
3.671 0.44
Segment 1
Reach 3
0.30
4.00
1.042
4.19
0.29
0.23
4.09 3.671
0.44
Segment 1
Reach 4
2.50
4.00
1.049
4.21
0.29
0.23
4.12
3.69
0.44
Segment 1 1.70 2.60
Reach 5
0.937 1 4.52
0.28
0.22
2.39 2.141
0.44
Segment 1
Reach 6
4.501 2.60
0.941
4.54
0.28
0.22
2.40
2.15
0.44
Segment 2
Reach 1
1.30
2.60
0.948
4.57
0.28
0.22
2.42 1 2.17
0.44
Segment 2
Reach 2
2.30
2.60
0.955
4.59
0.28
0.22
2.44
2.191 0.44
Segment 2 0.80 3.20
Reach 3
1.035 1 4.51 1 0.29
0.23 1 3.25 1 2.91
0.44
Segment 2
Reach 4
0.201 3.20
1.050
4.52
0.29
0.23 1 3.30
2.96
0.44
Segment 3
Reach 1
0.04
6.701
0.260
1.00
0.31
0.25
3.49
3.13
0.44
Segment 4
Reach 1
3.501 3.20
1.063
4.55
0.29
0.23
3.34
2.99
0.44

Segment 4
Reach 2
1.70
3.20
1.068
4.57
0.29
0.23
3.35
3.01
0.44
Segment 4
Reach 3
4.50
3.20
1.119
4.74
0.29
0.23 1 3.51
3.15
0.44
Segment 4
Reach 4
1.80
3.90
1.188
4.61
0.29
0.23
4.55
4.08
0.44
Segment 4
Reach 5
3.20 4.00
1.240
4.77
0.29
0.23
4.86
4.36
0.44
Segment 4
Reach 6
5.00
4.00
1.244
4.78
0.30
0.23
4.88
4.38
0.44
Segment 4
Reach 7
2.80
3.40
1.193 14.91 0.29 0.23
3.98
3.57
0.44
Flow 1 CBOD I NBOD D.O.
c f s mg/1 mg/1 mg/1
Segment 1 Reach 1
Waste 2.325 3794.000 190.000 I 0.000
Headwaters 228.000 2.000 1.000 7.440
Tributary 0.000 2.000 1.000 7.440
* Runoff 0.560 2.000 1.000 ' 7.440
Segment 1 Reach 2
Waste 0.000
Tributary 43.000
* Runoff 0.560
Segment 1 Reach 3
Waste 0.000
Tributary 0.010
* Runoff 0.560
Segment 1 Reach 4
Waste 0.000
Tributary 3.600
* Runoff 0.560
0.000
2.000
2.000
0.000
7.500
2.000
0.000
2.000
2.000
Segment 1 Reach 5
Waste 0.000 1 0.000
Tributary 6.800 2.000
* Runoff 0.560 2.000
0.000 1 0.000
1.000 7.440
1.000 7.440
0.000
13.500
1.000
0.000
1.000
1.000
0.000
1.000
1.000
0.000
7.440
7.440
0.000
7.440
7.440
0.000
7.440
7.440

Segment 1 Reach 6
Waste 0.000
Tributary 1.800
* Runoff 0.560
Segment 2 Reach 1
Waste 0.000
Headwaters 0.000
Tributary 4.400
* Runoff 0.560
Segment 2 Reach 2
Waste 0.000
Tributary 4.600
* Runoff 0.560
Segment 2 Reach 3
Waste 0.000
Tributary 13.000
* Runoff 0.560
Segment 2 Reach 4
Waste 6.200
Tributary 0.000
* Runoff 0.560
Segment 3 Reach 1
Waste 0.628
Headwaters 3.300
Tributary 0.000
* Runoff 0.210
Segment 4 Reach 1
Waste 1.550
Headwaters 0.000
Tributary 0.000
* Runoff 1.540
Segment 4 Reach 2
Waste 0.046
Tributary 0.000
* Runoff 1.540
Segment 4 Reach 3
Waste 0.000
Tributary 39.000
* Runoff 0.700
0.000
2.000
2.000
0.000
2.000
2.000
2.000
0.000
2.000
2.000
0.000
2.000
2.000
43.800
2.000
2.000
0.000
1.000
1.000
0.000
1.000
1.000
1.000
0.000
1.000
1.000
0.000
7.440
7.440
0.000
7.440
7.440
7.440
0.000
7.440
7.440
0.000 I 0.000
1.000 7.440
1.000 7.440
90.000
1.000
1.000
45.000 23.400
2.000 1.000
2.000 1.000
2.000 1.000
45.000 90.000
2.000 1.000
2.000 1.000
2.000 1.000
45.000
2.000
2.000
0.000
2.000
2.000
90.000
1.000
1.000
0.000
1.000
1.000
0.000
7.440
7.440
0.000
7.440
7.440
7.440
0.000
7.440
7.440
7.440
0.000
7.440
7.440
0.000
7.440
7.440
Segment 4 Reach 4

Waste
Tributary
* Runoff
0.000
0.000
0.350
Segment 4 Reach 5
Waste 0.000
Tributary 43.000
* Runoff 0.350
Segment 4 Reach 6
Waste 0.000
Tributary 0.000
* Runoff 1.280
Segment 4 Reach 7
Waste 0.000
Tributary 0.000
* Runoff 1.280
0.000 1 0.000
2.000 1.000
2.000 1.000
0.000
2.000
2.000
0.000
1.000
1.000
0.000 1 0.000
2.000 1.000
2.000 1.000
0.000
2.000
2.000
* Runoff flow is in cfs/mile
0.000
1.000
1.000
0.000
7.440
7.440
0.000
7.440
7.440
0.000
7.440
7.440
0.000
7.440
7.440

r ITion ocEIK�.
jcvied .0 vW6
G?ec----(cw
GF, -‘2.i,:,d..,5+55'88
A4 : 8'7 8 rn; a
04: 1y00cYs
7R10,=31zc h
70)00)=ysti
Abi120bi 1Y tu-
1--- O. a. ---1
jr
hc4wAwt Yhca
E1K,n CandU Corp
t.o+m o.olmgd
3nL+
t--3.5--i 1— ,1---1
7cYne6 Y.1 N LL WT?
0.365 IM bt
. tme model u6ed ajd r
Chc lr wt PAO0u- . I 4-W -� L vt c ucti atiptdA e6Y p
0.VO- 6ea Li -± Vt -Cur44 v \owed " i to 6 0"
o I;B prt-+w a 7
yA0
t ------ y.5 --( k---1•53--#
VA06IM rivEF
�F C (yr iv4 mckt
c ea v Clnc;l-K
fttfluf. {>JiM CiA thiaes
GitP avv\. se vne r ��
`i
fHID X7 c'3
�-- 3. a —! 1---5.0 --1