NC0026646_Wasteload Allocation_19921105

NPDES DOCUMENT SCANNING COVER SHEET
NPDES Permit:
NC0026646
Pilot Mountain WWTP
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:
November 5, 1992
This document its printed on reuse paper - iauore arty
coritent on the rezrerse Decide

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NC0026646
PERMI'1'1'hE NAME:
FACILITY NAME:
Town of Pilot Mountain
Pilot Mountain WWTP
Facility Status: Existing
Permit Status: Renewal with Modification
Major Minor
Pipe No.: 001
Design Capacity: 3.0 MGD
Domestic (% of Flow):
Industrial (% of Flow):
** %
** %
Comments:
Need PIRF for industrial percentages, PIRF has been requested. Pilot
Mountain requests flow increase to 3.0 MGD and outfall relocation to
Ararat River.
RECEIVING STREAM: the Ararat River
Class: C
Sub -Basin: 03-07-03
Reference USGS Quad: B 16 SE
County: Surry
Regional Office: Winston-Salem Regional Office
Previous Exp. Date: 1/31/92 Treatment Plant Class: IV
Classification changes within three miles:
none •
Requested by:
Charles
Lowe
by:
Reviewed by: ,Gh,
135 (sh:)
(please attach)
Date: 6/29/92
aki%Date:
c yPM
to/3 o,19 2///3/v.
-
Modeler
Date Rec.
#
P
(,z50, �z
'1005
2
Drainage Area (nv. ) 2.0 Avg. Streamflow (cfs): 3 77
7Q10 (cfs) g2.2 Winter 7Q10 (cfs) I? 3 30Q2 (cfs)
_ l
Toxicity Limits: IWC 5 % Acut hronic
Instream Monitoring:
Parameters 1 W&gierru , -1).O. t'-ECRc cowFatadu, c-oNt't, c rl vt ry
Upstream Y Location AT L�A57 1 Uu' uPT2� (
Location k SR 7L)4 - A-FTX . 0. 4 At 1 LES
DoWMsTREALAA
Downstream
Y
Effluent
Characteristics
Summer
Winter
BOD5 (mg/l)
-.CD
30
NH -N (mg/1)
3
15
MaNlTag-
D.O. (mg/1)
TSS (mg/1)
3o
30
F. Col. (/100 ml)
200
Zav
pH (SU)
6-9
6-9
gestbuAt- CA(.0124/J6
2-13 it,3,7L
2-43 9A
AL t 4QaACryL)
60
3o (AA1Ly /wlx
kl
3cu
-16 PEAlcouriE .
Nor VASE AKI WG SE
f•AO 44 -A At
MoR-6 Tip-IAnJ 2.,
roN elk ( E CAUSE oG 77
(0:(2.cun-y (45,0 =
o. Z 4
O. ZZ$
'c. tN r�Jc
Comments: Fncii.lry sNouL.D -PC> oP-A4 ILE-Or A4oNfToa#J, Fe42-1 UtDMIL")
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Facility Name:
NPDES No.:
Type of Waste:
Facility Status:
Permit Status:
Receiving Stream:
Stream Classification:
Subbasin:
County:
Regional Office:
Requestor:
Date of Request:
Topo Quad:
FACT SHEET FOR WASTELOAD ALLOCATION
Pilot Mountain WWTP
NC0026646
57% Ind/43% dom
Existing
Renewal
Ararat River
C
030703
Surry
WSRO
C. Lowe
6/29/92
B16SE
Request # 7005
Stream Characteristic:
USGS #
Date:
Drainage Area (mi2):
Summer 7Q10 (cfs):
Winter 7Q10 (cfs):
Average Flow (cfs):
30Q2 (cfs):
IWC (%):
PECEIVEb
N.C. Dept. of EHNI
AUG 1 1992
ReclEor a C.i tficcV
287
82.2
163
379
5.35
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
The facility is currently discharging to Heatherly Creek, which yields an IWC of 94%. The facility
cannot meet its toxicity limit and may relocate to the Ararat River which would yield an IWC of 5%
with a flow of 3 MGD. Pilot Mountain is under a JOC due to its failing innovative treatment
technology. Federal funds will enable the facility to improve their treatment system and,
hopefully, meet their final limits. Previous speculative WLA was performed for a possible
discharge to Tom's Creek. Because the Town is seeking long term solutions, the Ararat River may
be their best alternative at a flow of 3 MGD. Mt. Airy is appx. 13 miles upstream.
The facility should be aware that limits may become more stringent upon basin -wide renewal.
Speci Scedul quirements and additional comments from Reviewers:
i
Recommended by:
Reviewed by
Instream Assessment:
Regional Supervisor:
Permits & Engineering:
,0L, aLo
atindto-onA.
Date: 9,/2o/Rz
Date: ?r- 9z-
Date: Ili / ?'`3/i
SEP 2 3 1992
RETURN TO TECHNICAL SERVICES BY:

2
Existing Limits:
Wasteflow (MGD):
BOD5 (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Co1. (/100 ml):
pH (SU):
Residual Chlorine (µg/1):
Oil & Grease (mg/1):
TP (mg/1):
TN (mg/1):
Temperature:
CONVENTIONAL PARAMETERS
On Heatherly Creel
Monthly Average
Summer Winter
1.5 1.5
30 30
14 monitor
5 5
30 30
200 200
6-9 6-9
30 30 60 daily
max
Not cause an increase of more than 2.8°C
in the receiveing stream and in no case
cause the receiving stream to exceed 29°C
Existing limits are based on WLA completed 12/91.
Recommended Limits:
Wasteflow (MGD):
BOD5 (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Co1. (/100 ml):
pH (SU):
Residual Chlorine (14/1):
Oil & Grease (mg/1):
TP (mg/1):
TN (mg/1):
Temperature:
On the Ararat River
Monthly Average
Summer Winter WQ or EL
3.0 3.0
30 30
15 monitor
30 30
200 200
6-9 6-9
28 28
30 30 60 daily
max
Not cause an increase of more than 2.8°C
in the receiveing stream and in no case
cause the receiving stream to exceed
29°C.
Limits Changes Due To:
Change in 7Q10 data
Change in stream classification
Relocation of discharge
Change in wasteflow
Parameters) Affected
NH3-N
(explanation of any modifications to past modeling analysis including new flows, rates, field data,
interacting discharges)
(See page 4 for miscellaneous and special conditions, if applicable)

3
Type of Toxicity Test:
Existing Limit:
Recommended Limit
Monitoring Schedule:
existing Limits
Cadmium (ug/l):
Chromium (ug/l):
Copper (ug/1):
Nickel (ug/1):
Lead (ug/1):
Zinc (ug/l):
Cyanide (ug/1):
Phenols (ug/l):
Mercury (ug/1):
Silver (ug/l):
Recommended Limits
TOXICS/METALS
Chronic Quarterly P/F
Qtrly P/F at 90% (per WLA completed 12/91)
Qtrly P/F at 5%
Jul, Oct, Jan, Apr
ON 4611THeizi4 Czeest,
Daily Max.
2.1
53
monitor
94
27
monitor
5.3
0.013
monitor
pa -nke ARa44 r
Daily Max.
COD (mg/):
Cadmium (ug/1): monitor
Chromium (ug/l): monitor
Copper (ug/l): monitor
Nickel (ug/1): monitor
Lead (ug/1): monitor
Zinc (ug/1): monitor
Cyanide (ug/1): monitor
Phenols (ug/1):
Mercury (ug/1): 0.224
Silver (ug/1): monitor
Limits Changes Due To:
Change in 7Q10 data
Change in stream classification
Relocation of discharge
Change in wasteflow
New pretreatment information
Failing toxicity test
Other (onsite toxicity study, interaction, etc.)
WQ or EL
Parameter(s) Affected
All metals
X Parameter(s) are water quality limited. For some parameters, the available load capacity of
the immediate receiving water will be consumed. This may affect future water quality based
effluent limitations for additional dischargers within this portion of the watershed.
OR
No parameters are water quality limited, but this discharge may affect future allocations.

INSTREAM MONITORING REQUIREMENTS
Upstream Location: at least 100 ft upstream
Downstream Location: at SR 2044 appx. 0.4 miles downstream
Parameters: temperature, DO, Fecal coliform, conductivity
Special instream monitoring locations or monitoring frequencies:
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Adequacy of Existing Treatment
Has the facility demonstrated the ability to meet the proposed new limits with existing treatment
facilities? Yes No
If no, which parameters cannot be met?
SS,Aar 710 t,/%'srn.,e#y7� ��.0
%:
Would a "phasing in" of the new limits be appropriate? Yes No
If yes, please provide a schedule (and basis for that schedule) with the regional
office recommendations:
If no,Lwhy not?j/ /�
7 ;1/ �LLT`7 / G-r�G� �v �' Z,t/i 1 /
�-7tv TGl4 // i4:0-/e�/
s��c �1 I w/
Special Instructions or Conditions
Wasteload sent to EPA? (Major) (Y or N)
(If yes, then attach schematic, toxics spreadsheet, copy of model, or, if not modeled, then old
assumptions that were made, and description of how it fits into basinwide plan)
Additional Information attached? (Y or N) If yes, explain with attachments.

Facility Name pi to n MTN • w W Tp Permit # A1Coo 26,6
4(0 Pipe #
CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT (QRTRLY
)
The effluent discharge shall at no time exhibit chronic toxicity using test procedures
outlined in:
1.) The North Carolina Ceriodaphnia chronic effluent bioassay procedure (North
Ca
Procedure - Revised *September 1989) or subsequent versions.'°a Chronic Bioassay
The effluent concentration at which there may be no observable inhibition of
� 5 �o (defined as treatment two in the North Carolina procedure doc�eAmproduction or significant mortality
quartet,monitoring using this procedure to establish compliance with the tit condition.The holder shall perform
performedAfter thirty days from the effective date of this The first test will be
5u� / o c.T, .TAN �pR . Effluent sampling permitng the months of
permitted final effluent discharge below all treatment testing shall be performed at the NPDES
processes.
All toxicity testingresults this required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (MR-1) for the month in which it wasg
Additionally, DEM Form AT-1 (original) is to be sent tofollowing using r the parameter code TGP3B.
address:
Attention: Environmental Sciences Branch
North Carolina Division of
Environmental Management
4401 Reedy Creek Road
Raleigh, N.C. 27607
Test data shall be complete and accurate and include all supporting t ths
chemical/physical
association with the toxicity tests, as welras all dosefresponse data. Total residual chlorine measurements performed in
sample must be measured and reported if chlorine is employed for disinfection of the wase e effluent toxicity
stream.
Should any single quarterly monitoring indicate a failure to meet specified limits the
begin immediately, until such time that a single test is passed. Upon passing, this monthly
monitoring will
revert to quarterly in the monthsp g� ray test requirement will
specified above.
Should any test data from this monitoring requirement or tests performed b the North
Environmental Management indicate potential impacts to the receivin s y this Carolina Division of
modified to include alternate monitoring requirements or limits. g permit may be re -opened and
NOTE: Failure to achieve test conditions as specified in the cited document, such as mini
survival and appropriate environmental controls, shall constitute an invalid test and willire immecontrlorganism
require urune
retesting(within 30 days of initial monitoring event). Failure to submit suitable test resuldiate
noncompliance with monitoring requirements. is will constitute
7Q10 P 2.2 cfs
Permitted Flow 3. o MGD
IWC 5. 35 %
Basin & Sub -basin v 30470 3
Receiving Stream Agehur RtdG2
County sua fey
Recommended by:
,e(„„_cy.
1
Date 8/►7 Z
QCL PIF Version 9/91

08/15/92 ver 3.1 T OXICS REVIEW
Facility: pilot mtn
NPDES Permit No.: nc0026646
Status (E, P, or M): m
Permitted Flow: 3.0 mgd
Actual Average Flow: 0.86 mgd
Subbasin: '030703
Receiving Stream: ararat river I PRETREATMENT DATA I----EFLLUENT DATA ----
Stream Classification: c I ACTUAL PERMITTEDI
7Q10: 82.20 cfs I Ind. + Ind. + 1 FREQUENCY
IWC: 5.35 % I Domestic PERMITTED Domestic I OBSERVED of Chronic
Stn'd / Bkg 1 Removal Domestic Act.Ind. Total Industrial Total 1 Eflluent Criteria
Pollutant AL Conc. 1 Eff. Load Load Load Load Load 1 Conc. Violations
(ug/1) (ug/1) 1 % (#/d) (#/d) (#/d) (#/d) (#/d) 1 (ug/1) (#vio/#sam)
Cadmium S 2.0 1 92% 0.0000 0.0330 0.03 0.0666 0.067 1 I
Chromium 5 50.0 1 76% 0.0100 0.1500 0.16 1.5150 1.525 1 1 I
Copper AL 7.0 1 53% 0.0300 0.9150 0.95 3.2970 3.327 1 332.0 I N
Nickel S 88.0 1 32% 0.0200 0.1450 0.17 0.9230 0.943 I 1 P
Lead S 25.0 1 81% 0.0400 0.1460 0.19 0.9290 0.969 1 1 U
Zinc AL 50.0 1 12% 0.0500 0.3470 0.40 1.4000 1.450 1 360.0 1 T
Cyanide S 5.0 1 59% 0.0100 0.0510 0.06 0.0680 0.078 1 I
Mercury S 0.012 1 86% 0.2000 0.0030 0.20 0.0005 0.200 1 1 S
Silver AL 0.06 1 94% 0.0200 0.0480 0.07 2.0380 2.058 1 1 E
Selenium S 5.00 1 0% 1 1 C
Arsenic S 50.00 1 0% 1 1 T
Phenols S NA 1 0% 1 1 I
NH3-N C 1 0% 1 1 0
T.R.Chlor.AL 17.0 1 0% 1 1 N
Pollutant
ALLOWABLE PRDCT'D PRDCT'D PRDCT'D MONITOR/LIMIT 1--ADTN'L RECMMDTN'S--
0.0 Effluent Effluent Instream 1 Recomm'd
Conc. using using Conc. Based on Based on Based on 1 FREQUENCY INSTREAM
Allowable CHRONIC ACTUAL PERMIT using ACTUAL PERMITTED OBSERVED 1 Eff. Mon. Monitor.
Load Criteria Influent Influent OBSERVED Influent Influent Effluent 1 based on Recomm'd ?
(#/d) (ug/1) (ug/1) (ug/1) (ug/1) Loading Loading Data 1 OBSERVED (YES/NO)
Cadmium S 1 11.26 37.355 0.368 0.742 0.00 Monitor 1 1 A
Chromium S 1 93.81 933.871 5.351 50.998 0.00 Monitor 1 1 N
Copper AL 1 6.71 130.742 61.888 217.884 17.78 Monitor Monitor Monitor 1 Weekly YES 1 A
Nickel S 1 58.27 1643.613 15.634 89.350 0.00 Monitor 1 1 L
Lead S 1 59.25 466.935 4.9)4 25.654 0.00 Monitor Monitor 1 1 Y
Zinc AL 1 25.59 933.871 48.680 177.798 19.27 Monitor Monitor Monitor 1 Monthly NO 1 S
Cyanide S 1 5.49 93.387 3.485 4.456 0.00 Monitor Monitor 1 1 I
Mercury S 1 0.04 0.224 3.960 3.911 0.00 Limit Limit 1 1 S
Silver AL 1 0.45 1.121 0.569 17.206 0.00 Monitor Monitor 1 I
Selenium S 1 2.25 93.387 0.000 0.000 0.00 i 1 R
Arsenic S 1 22.52 933.871 0.000 0.000 0.00 1 1 E
Phenols S 1 0.000 0.000 0.000 0.00 1 1 S
NH3-N C 1 0.000 0.00 1 1 U
T.R.Chlor.AL I 317.516 0.00 1 1 L
I I 1 T
t I s

*41
6 /' 7
S PRETREATMENT INFORMATION REQUEST FORM
FACILITY NAME: ��d7��4�� NPDES NO. NC00
REQUEsi tR : �C/AQ LD�•/� DATE: 6" /3 / l REGION: •T.,C/
PERMIT CONDITIONS COVERING PRETREATMENT
This
This
T4CHN
facility has no Sills and should not have pretreatment language.
facility should and/or is developing a pretreatment program.
c,lude the following conditions:
JUN 21992
PRIATMtly
Program Development
Phase I due / /
Phase II due / /
Additional Conditions
(attached)
is currently implementing a pretreant program.
Please include the following conditions:
Program Implementation
Additional Conditions
(attached)
IGNIFICANT INDUSTRIAL USERS' (SIUs)7TRIBUTIONS
SIU FLOW - TOTAL:
- COMPOSITION:
TEXTILE:
METAL FINISHING:
OTHER:
omap
MGD
MGD
MGD
HAWORKS REVIEW
PAS
PARAMETER :THROUGH
:Anal -ABLE
Cd
Cr
Cu
Ni
Pb
Zn
CN
Phenol
Other
o•IO
DAILY
DOMESTIC
0,60
, n
O•o
o, 01-(
(",(-)
o.c)c
, ccrYro. ab
LOAD IN LBS/DAY ACTUAL
PEWI IED INDUSTRIAL
REMOVAL
0.666)C D•033 [h -k
(,.5( O.
,9.7 o G1 (5 5---
O Q .3
RES.EIVED: /
/
REVIEWED 13Y:
RF JRNED : �(/

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Pt c_o r M r" . Akvr-1.--
Discharger
Receiving Stream
SUMMER
QEFF=3.0 MGD, BOD5=30 MG/L
NH3-N=15 MG/L
MODEL RESULTS
: CITY OF MOUNT AIRY -.
: ARARAT RIVER
The End D.O. is 7.49 mg/1.
The End CBOD is 6.84 mg/1.
The End NBOD is 5.57 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 5.01 0.26 1
Reach 1 MT, ftFal - 60.00 58.50 5.00 7.00000
Reach 2 0.00 0.00 0.00 0.00000
Reach 3 0.00 0.00 0.00 0.00000
Reach 4 0.00 0.00 0.00 0.00000
Reach 5 45.00 90.00 0.00 0.01800
Reach 6 0.00 0.00 0.00 0.00000
Reach 7 0.00 0.00 0.00 0.00000
Reach 8 0.00 0.00 0.00 0.00000
Reach 9 0.00 0.00 0.00 0.00000
Segment 2 6.67 0.60 3
Reach 1 0.00 0.00 0.00 0.00000
Reach 2 0.00 0.00 0.00 0.00000
Reach 3 i;//. t,60.00 66.60 0.00 3.00000
Reach 4 0.00 0.00 0.00 0.00000
/15 : M-r? LOT5

*** MODEL SUMMARY DATA ***
Discharger : CITY OF MOUNT AIRY Subbasin : 030703
Receiving Stream : ARARAT RIVER Stream Class: C
Summer 7Q10 : 14.9 Winter 7Q10 : 31.0
Design Temperature: 25.0
ILENGTHI SLOPE' VELOCITY 1 DEPTH! Kd 1 Kd 1 Ka I Ka 1 KN 1
1 mile 1 ft/mil fps 1 ft Idesignl @204 Idesign l @204 Idesign'
1 1 1 1 1 1 1 1 I
Segment 1 1 0.261 8.201 0.540 11.78 10.33 10.26 14.44•1 3.981 0.44
Reach 1 1 I 1 1 1 1 I 1 I
I I 1 1 1 I I 1 I
Segment 1 I 0.721 8.201 0.589 1 1.98 1 0.33 1 0.26 13.95 1 3.551 0.44
Reach 2 I 1 1 1 I 1 1 I I
1 1 1 1 1 1 1 I I
Segment 1 1 1.201 8.201 0.720 1 2.33 10.33 10.26 13.43 1 3.081 0.44
Reach 3 1 1 1 1 I 1 1 I I
1 1 1 1 1 1 I 1 I
Segment 1 1 2.201 8.201 0.723 1 2.36 1 0.33 1 0.26 1 3.38 I 3.03I 0.44
Reach 4 1 I I I 1 I 1 1 I
I I I I I 1 1 1 I
Segment 1 I 1.651 8.201 0.732 1 2.36 1 0.33 10.26 1 3.38 1 3.031 0.44
Reach 5 1 1 I 1 I 1 1 I I
I 1 I 1 I I I I
Segment 1 I 2.101 10.501 0.790 1 2.30 10.35 1 0.28 13.67 1 3.291 0.44
Reach 6 I 1 I 1 1 1 1 I I
I 1 1 1 1 1 1 1 I
Segment 1 I 2.00I 10.501 0.803 1 2.33 1 0.35 1 0.28 13.62 1 3.251 0.44
Reach 7 I 1 I I 1 1 I 1 I
1 1 I I I 1 1 1 I
Segment 1 1 0.351 7.971 0.755 1 2.44 10.33 10.26 15.90 I 5.291 0.44
Reach 8 I 1 1 1 I 1 1 I I
I 1 1 I 1 1 I 1 I
Segment 1 I 2.551 7.971 0.766 12.48 1 0.33 10.26 15.99 I 5.371 0.44
Reach 9 I I I I 1 I I 1 I
1 1 1 1 1 I 1 1 I
Segment 2 1 0.501 7.971 0.768 12.57 1 0.33 10.26 16.01 1 5.391 0.44
Reach 1 1 1 1 I 1 1 I I I
1 1 I I I 1 I I
Segment 2 1 0.101 7.971 0.768 12.60 1 0.33 1 0.26 16.01 1 5.391 0.44
Reach 2 1 1 I I I 1 1 1 I
1 I 1 I 1 I 1 I I
Segment 2 1 2.021 7.971 0.811 1 2#.63 10.33 1 0.26 1 6.34 1 5.691 0.44
Reach 3 I I 1 1 1 1 1 1

1 1 1 1 1 1 1 1 1 I
Segment 2 I 8.401 7.971 0.852 1 2.69 1 0.33 1 0.26 16.67 1 5.981 0.44 I
Reach 4 I 1 1 1 1 1 1 1 1 I
I Flow 1 CBOD 1 NBOD 1 D.O. I
cfs 1 mg/1 1 mg/1 1 .mg/1
Segment 1 Reach 1
Waste 1 10.850 160.000 158.500 1 5.000
Headwaters) 14.900 1 2.000 I 1.000 I 5.550
Tributary 1 0.000 1 2.000 I 1.000 1 7.440
* Runoff 1 0.080 I 2.000 1 1.000 1 7.440
Segment 1 Reach 2
Waste 1 0.000 1 0.000 1 0.000 I 0.000
Tributary 1 8.900 I 2.000 1 1.000 1 7.440
* Runoff 1 0.080 1 2.000 1 1.000 1 7.440
Segment 1 Reach 3
Waste 1 0.000 I 0.000 1 0.000 1 0.000
Tributary 1 23.600 1 2.000 1 1.000 1 7.440
* Runoff 1 0.380 1 2.000 1 1.000 1 7.440
Segment 1 Reach 4
Waste 1 0.000 1 0.000 I 0.000 1 0.000
Tributary 1 0.800 1 2.000 1 1.000 I 7.440
* Runoff 1 0.580 1 2.000 I 1.000 I 7.440
Segment 1 Reach 5
Waste 1 0.028 145.000 1 90.000 I 0.000
Tributary 1 0.000 I 2.000 1 1.000 1 7.440
* Runoff 1 0.580 1 2.000 1 1.000 1 7.440
Segment 1 Reach 6
Waste 1 0.000 I 0.000 1 0.000 I 0.000
Tributary 1 0.380 1 2.000 1 1.000 1 7.440
* Runoff 1 0.380 1 2.000 1 1.000 I 7.440
Segment 1 Reach 7
Waste I 0.000 1 0.000 1 0.000 I 0.000
Tributary 1 0.770 1 2.000 1 1.000 I 7.440
* Runoff 1 1.700 1 2.000 1 1.000 1 7.440
Segment 1 Reach 8
Waste I 0.000 1 0.000 1 0.000 1 0.000
Tributary 1 0.000 I 2.000 1 1.000 I 7.440
* Runoff 1 1.430 1 2.000 1 1.000 1 7.440

Segment 1 Reach 9
Waste 1 0.000 1 0.000 I 0.000 1 0.000
Tributary 1 0.870 1 2.000 1 1.000 1 7.440
* Runoff 1 1.430 1 2.000 1 1.000 1 7.440
Segment 2 Reach 1
Waste I 0.000 1 0.000 1 0.000 1 0.000
Headwaters) 0.000 1 2.000 1 1.000 1 7.440
Tributary 1 3.790 1 2.000 1 1.000 1 7.440
* Runoff 1 1.430 1 2.000 1 1.000 1 7.440
Segment 2 Reach 2
Waste 1 0.000 1 0.000 1 0.000 1 0.000
Tributary 1 1.220 1 2.000 1 1.000 1 7.440
* Runoff 1 1.430 1 2.000 1 1.000 1 7.440
Segment 2 Reach 3
Waste 1 4.650 1 60.000 1 66.600 1 0.000
Tributary 1 0.000 1 2.000 I 1.000 I 7.440
* Runoff 1 1.430 1 2.000 1 1.000 1 7.440
Segment 2 Reach 4
Waste 1 0.000 1 0.000 1 0.000 1 0.000
Tributary 1 0.710 1 2.000 I 1.000 I 7.440
* Runoff 1 1.430 1 2.000 1 1.000 1 7.440
* Runoff flow is in cfs/mile

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
# I Reach # I
1
1
1
1
1
1
1
1
1
1
1
1
Seg Mi I
0.00
0.02
0.04
0.06
0.08
0.10
0.12
0.14
0.16
0.18
0.20
0.22
0.24
0.26
0.26
0.30
0.34
0.38
0.42
0.46
0.50
0.54
0.58
0.62
0.66
0.70
0.74
0.78
0.82
0.86
0.90
0.94
0.98
0.98
1.18
1.38
1.58
1.78
1.98
2.18
2.18
2.38
2.58
2.78
2.98
3.18
3.38
3.58
3.78
3.98
4.18
4.38
4.38
4.43
4.48
4.53
D.O. I CBOD I
5.32 26.44
5.29 26.42
5.27 26.40
5.24 26.38
5.22 26.35
5.19 26.33
5.17 26.31
5.15 26.29
5.12 26.27
5.10 26.25
5.08 26.23
5.06 26.21
5.03 26.19
5.01 26.16
5.64 19.96
5.60 19.93
5.57 19.90
5.53 19.88
5.50 19.85
5.47 19.82
5.44 19.79
5.41 19.76
5.37 19.73
5.35 19.70
5.32 19.68
5.29 19.65
5.26 19.62
5.23 19.59
5.20 19.56
5.18 19.53
5.15 19.51
5.13 19.48
5.10 19.45
6.05 12.39
5.97 12.31
5.90 12.22
5.83 12.14
5.77 12.06
5.71 11.98
5.66 11.90
5.68 11.77
5.63 11.68
5.59 11.60
5.54 11.52
5.51 11.43
5.47 11.35
5.44 11.27
5.41 11.19
5.39 11.11
5.36 11.03
5.34 10.95
5.32 10.88
5.32 10.89
5.32 10.87
5.31 10.85
5.31 10.83
SUMMER
QEFF=3.0 MGD, BOD5=30 MG/L
NH3-N=15 MG/L
NBOD I Flow I
25.23
25.20
25.17
25.15
25.12
25.10
25.07
25.04
25.02
24.99
24.96
24.94
24.91
24.88
18.75
18.72
18.68
18.65
18.61
18.57
18.54
18.50
18.47
18.43
18.40
18.36
18.33
18.29
18.26
18.22
18.19
18.15
18.12
11.19
11.09
11.00
10.90
10.81
10.72
10.62
10.50
10.40
10.30
10.21
10.12
10.02
9.93
9.84
9.75
9.66
9.57
9.49
9.52
9.50
9.48
9.46
25.75
25.75
25.75
25.75
25.76
25.76
25.76
25.76
25.76
25.76
25.77
25.77
25.77
25.77
34.67
34.67
34.68
34.68
34.68
34.69
34.69
34.69
34.70
34.70
34.70
34.71
34.71
34.71
34.72
34.72
34.72
34.73
34.73
58.33
58.40
58.48
58.56
58.63
58.71
58.78
59.58
59.70
59.82
59.93
60.05
60.16
60.28
60.40
60.51
60.63
60.74
60.86
60.89
60.92
60.95
60.98

1' 5 4.58 5.30 10.81 9.44 61.00
1 5 4.63 5.30 10.80 9.42 61.03
1 5 4.68 5.30 10.78 9.39 61.06
1 5 4.73 5.29 10.76 9.37 61.09
1 5 4.78 5.29 10.74 9.35 61.12
1 5 4.83 5.29 10.72 9.33 61.15
1 5 4.88 5.28 10.70 9.31 61.18
1 5 4.93 5.28 10.68 9.29 61.21
1 5 4.98 5.28 10.66 9.27 61.24
1 5 5.03 5.27 10.64 9.25 61.27
1 5 5.08 5.27 10.63 9.23 61.29
1 5 5.13 5.27 10.61 9.20 61.32
1 5 5.18 5.27 10.59 9.18 61.35
1 5 5.23 5.26 10.57 9.16 61.38
1 5 5.28 5.26 10.55 9.14 61.41
1 5 5.33 5.26 10.53 9.12 61.44
1 5 5.38 5.26 10.51 9.10 61.47
1 5 5.43 5.25 10.49 9.08 61.50
1 5 5.48 5.25 10.48 9.06 61.53
1 5 5.53 5.25 10.46 9.04 61.56
1 5 5.58 5.25 10.44 9.02 61.58
1 5 5.63 5.25 10.42 9.00 61.61
1 5 5.68 5.25 10.40 8.98 61.64
1 5 5.73 5.24 10.38 8.96 61.67
1 5 5.78 5.24 10.37 8.94 61.70
1 5 5.83 5.24 10.35 8.92 61.73
1 5 5.88 5.24 10.33 8.90 61.76
1 5 5.93 5.24 10.31 8.88 61.79
1 5 5.98 5.24 10.29 8.86 61.82
1 5 6.03 5.24 10.28 8.84 61.85
1 6 6.03 5.25 10.22 8.79 62.23
1 6 6.13 5.25 10.19 8.76 62.26
1 6 6.23 5.25 10.16 8.72 62.30
1 6 6.33 5.26 10.13 8.69 62.34
1 6 6.43 5.26 10.09 8.65 62.38
1 6 6.53 5.26 10.06 8.62 62.42
1 6 6.63 5.26 10.03 8.58 62.45
1 6 6.73 5.26 10.00 8.55 62.49
1 6 6.83 5.27 9.96 8.52 62.53
1 6 6.93 5.27 9.93 8.48 62.57
1 6 7.03 5.27 9.90 8.45 62.61
1 6 7.13 5.28 9.87 8.42 62.64
1 6 7.23 5.28 9.84 8.38 62.68
1 6 7.33 5.28 9.81 8.35 62.72
1 6 7.43 5.29 9.77 8.32 62.76
1 6 7.53 5.29 9.74 8.28 62.80
1 6 7.63 5.29 9.71 8.25 62.83
1 6 7.73 5.30 9.68 8.22 62.87
1 6 7.83 5.30 9.65 8.19 62.91
1 6 7.93 5.30 9.62 8.16 62.95
1 6 8.03 5.31 9.59 8.12 62.99
1 6 8.13 5.31 9.56 8.09 63.02
1 7 8.13 5.34 9.46 8.01 63.79
1 7 8.23 5.34 9.42 7.96 63.96
1 7 8.33 5.35 9.37 7.92 64.13
1 7 8.43 5.36 9.33 7.87 64.30
1 7 8.53 5.37 9.29 7.83 64.47
1 7 8.63 5.37 9.24 7.78 64.64
1 7 8.73 5.38 9.20 7.74 64.81
1 7 8.83 5.39 9.15 7.69 64.98

7
1 7
1 7
1 7
1 7
1 7
1 7
1 7
1 7
1 7
1 7
1 7
1 7
1 8
1 8
1 8
1 8
1 8
1 8
1 8
1 8
1 8
1 8
1 8
1 9
1 9
1 9
1 9
1 9
1 9
1 9
1 9
1 9
1 9
1 9
2 1
2 1
2 1
2 1
2 1
2 1
2 1
2 1
2 1
2 1
2 1
2 2
2 2
2 2
2 2
2 2
2 2
2 2
2 2
2 2
2 2
2 2
2 3
2 3
2 3
8.93
9.03
9.13
9.23
9.33
9.43
9.53
9.63
9.73
9.83
9.93
10.03
10.13
10.13
10.16
10.20
10.23
10.27
10.30
10.34
10.37
10.41
10.44
10.48
10.48
10.73
10.99
11.24
11.50
11.75
12.01
12.26
12.52
12.77
13.03
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.50
0.50
0.51
0.52
0.53
0.54
0.55
0.56
0.57
0.58
0.59
0.60
0.60
0.80
1.00
5.40
5.40
5.41
5.42
5.43
5.44
5.44
5.45
5.46
5.47
5.47
5.48
5.49
5.49
5.51
5.53
5.55
5.57
5.59
5.61
5.63
5.65
5.67
5.69
5.71
5.90
6.07
6.22
6.35
6.47
6.57
6.67
6.75
6.83
6.90
6.92
6.94
6.95
6.96
6.97
6.98
7.00
7.01
7.02
7.03
7.04
7.04
7.05
7.05
7.05
7.05
7.05
7.06
7.06
7.06
7.06
7.06
6.67
6.71
6.75
9.11
9.07
9.03
8.98
8.94
8.90
8.86
8.82
8.78
8.73
8.69
8.65
8.61
8.61
8.60
8.59
8.57
8.56
8.55
8.54
8.52
8.51
8.50
8.48
8.40
8.31
8.22
8.14
8.05
7.97
7.88
7.80
7.72
7.64
7.56
7.28
7.27
7.25
7.24
7.22
7.21
7.20
7.18
7.17
7.15
7.14
7.06
7.06
7.05
7.05
7.05
7.04
7.04
7.04
7.04
7.03
7.03
10.01
9.93
9.85
7.65
7.61
7.57
7.52
7.48
7.44
7.40
7.36
7.32
7.28
7.24
7.20
7.16
7.16
7.14
7.13
7.12
7.10
7.09
7.08
7.06
7.05
7.04
7.02
6.95
6.85
6.76
6.67
6.58
6.49
6.41
6.32
6.24
6.16
6.08
5.82
5.81
5.79
5.78
5.77
5.75
5.74
5.72
5.71
5.69
5.68
5.61
5.60
5.60
5.60
5.59
5.59
5.59
5.59
5.58
5.58
5.5 8
9.01
8.92
8.83
65.15
65.32
65.49
65.66
65.83
66.00
66.17
66.34
66.51
66.68
66.85
67.02
67.19
67.19
67.24
67.29
67.34
67.39
67.44
67.49
67.54
67.59
67.64
67.69
68.56
68.93
69.29
69.66
70.02
70.39
70.75
71.12
71.48
71.85
72.21
76.00
76.07
76.14
76.21
76.29
76.36
76.43
76.50
76.57
76.64
76.72
77.94
77.95
77.96
77.98
77.99
78.01
78.02
78.04
78.05
78.06
78.08
82.73
83.02
83.31

I
2' 3 1.21 6.79 9.78 8.75 83.59
2 3 1.41 6.83 9.70 8.66 83.88
2 3 1.61 6.86 9.63 8.58 84.17
2 3 1.81 6.89 9.55 8.49 84.46
2 3 2.01 6.92 9.48 8.41 84.75
2 3 2.22 6.94 9.41 8.33 85.04
2 3 2.42 6.97 9.33 8.25 85.33
2 3 2.62 6.99 9.26 8.17 85.62
2 4 2.62 7.00 9.20 8.11 86.33
2 4 3.46 7.10 8.92 7.81 87.53
2 4 4.30 7.17 8.66 7.51 88.73
2 4 5.14 7.24 8.40 7.23 89.93
2 4 5.98 7.29 8.15 6.96 91.13
2 4 6.82 7.33 7.91 6.70 92.33
2 4 7.66 7.37 7.68 6.46 93.53
2 4 8.50 7.40 7.46 6.22 94.74
2 4 9.34 7.43 7.24 5.99 95.94
2 4 10.18 7.46 7.04 5.78 97.14
2 4 11.02 7.49 6.84 5.57 98.34
Seg # I Reach # I Seg Mi I D.O. I CBOD I NBOD I Flow I

WINTER
QEFF=3.0 MGD, BOD5=30 MG/L
Discharger
Receiving Stream
MODEL RESULTS
: CITY OF MOUNT AIRY
: ARARAT RIVER
The End D.O. is 9.88 mg/l.
The End CBOD is 6.56 mg/1.
The End NBOD is 5.97 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 6.87 0.00 1
Reach 1
Reach 2
Reach 3
Reach 4
Reach 5
Reach 6
Reach 7
Reach 8
Reach 9
Segment 2 8.97 0.60 3
Reach 1
Reach 2
Reach 3
Reach 4
c44. ) A S /A P I L L VJ
1-3p' TA �}-I
-1-60.00
0.00
0.00
0.00
45.00
0.00
0.00
0.00
0.00
0.00
0.00
60.00
0.00
90.00 0.00 7.00000
0.00 0.00 0.00000
0.00 0.00 0.00000
0.00 0.00 0.00000
90.00 0.00 0.01800
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 0.00000
0.00 0.00 3.00000
0.00 0.00 0.00000

*** MODEL SUMMARY DATA ***
Discharger : CITY OF MOUNT AIRY Subbasin : 030703
Receiving Stream : ARARAT RIVER Stream Class: C
Summer 7Q10 : 14.9 Winter 7Q10 : 31.0
Design Temperature: 14.0
'LENGTH' SLOPE) VELOCITY 1 DEPTH' Kd 1 Kd 1 Ka 1 Ka 1 KN I
I mile 1 ft/mil fps 1 ft Idesign l @201/2 (design) @2014 Idesignl
1 1 1 1 1 1 I 1 I
Segment 1 1 0.261 8.201 0.777 1 1.89 10.22 1 0.28 1 3.83 I 4.361 0.19
Reach 1 1 I 1 1 1 1 I 1 I
•1 1 1 I I I 1 I
Segment 1 I 0.721 8.201 0.784 12.08 10.21 1 0.28 1 3.34 1 3.811 0.19
Reach 2 1 1 1 I 1 1 1 1
1 1 1 I 1 1 1 I I
Segment 1 I 1.201 8.201 0.864 1 2.40 1 0.21 10.27 1 2.83 I 3.221 0.19
Reach 3 1 I I I 1 I 1 I I
1 I I I I 1 1 1 I
Segment 1 I 2.201 8.201 0.863 1 2.43 1 0.21 1 0.27 12.78 I 3.171 0.19
Reach 4 I I 1 1 1 I 1 1 I
I 1 1 1 I 1 I I I
Segment 1 1 1.651 8.201 0.871 12.43 10.21 1 0.27 12.78 1 3.171 0.19
Reach 5 1 1 I 1 I 1 I 1 I
I 1 I 1 1 I I I I
Segment 1 I 2.101 10.501 0.938 12.37 1 0.22 1 0.29 1 3.01 1 3.431 0.19
Reach 6 1 1 I I I 1 1 1 I
I 1 I 1 I 1 I 1 I
Segment 1 1 2.001 10.501 0.947 12.40 10.22 1 0.29 1 2.97 1 3.381 0.19
Reach 7 1 I 1 1 I 1 1 I I
I I 1 I I I I I I
Segment 1 I 0.351 *7.971 0.886 12.51 1 0.21 10.27 15.46 1 6.221 0.19
Reach 8 I I 1 I 1 I I I I
I 1 I 1 1 I I I I
Segment 1 I 2.551 7.971 0.916 12.55 10.21 10.27 15.64 1 6.431 0.19
Reach 9 1 I 1 I I I 1 1 I
1 1 1 I 1 I 1 1 I
Segment 2 1 0.501 7.971 0.975 1 2.68 10.21 10.27 1 6.00 I 6.841 0.19
Reach 1 I I 1• I I 1 1 I
I 1 1 1 I 1 I 1 I
Segment 2 1 0.101 7.971 0.990 12.71 10.21 1 0.27 1 6.10 I 6.95I 0.19
Reach 2 1 I I 1 1 1 1 I I
I 1 I I I 1 I I
Segment 2 1 2.021 7.971 1.036 1 2.74 10.21 1 0.28 16.37 I 7.261 0.19
Reach 3 1 I 1 I I I 1 1 I

1 1 1 1 1 1 1 1 1 1
Segment 2 1 8.401 7.971 1.107 1 2.81 1 0.21 1 0.28 1 6.81 1 7.771 0.19 1
Reach 4 1 1 1 1 1 1 1 1 1 I
I Flow 1 CBOD 1 NBOD 1 D.O. 1
I cfs 1 mg/1 I mg/1 1 mg/1 I
Segment 1 Reach 1
Waste 1 10.850 1 60.000 1 90.000 1 0.000
Headwaters) 31.000 1 2.000 1 1.000 1 9.280
Tributary 1 0.000 1 2.000 1 1.000 1 9.280
* Runoff 1 0.080 1 2.000 1 1.000 1 9.280
Segment 1 Reach 2
Waste I 0.000 I 0.000 1 0.000 1 0.000
Tributary 1 8.900 I 2.000 1 1.000 1 9.280
* Runoff 1 0.080 1 2.000 1 1.000 1 9.280
Segment 1 Reach 3
Waste 1 0.000 1 0.000 1 0.000 1 0.000
Tributary 1 23.600 1 2.000 1 1.000 I 9.280
* Runoff 1 0.380 1 2.000 1 1.000 1 9.280
Segment 1 Reach 4
Waste 1 0.000 I 0.000 1 0.000 1 0.000
Tributary 1 0.800 1 2.000 1 1.000 1 9.280
* Runoff 1 0.580 1 2.000 1 1.000 1 9.280
Segment 1 Reach 5
Waste 1 0.028 145.000 1 90.000 I 0.000
Tributary 1 0.000 1 2.000 1 1.000 1 9.280
* Runoff 1 0.580 1 2.000 1 1.000 1 9.280
Segment 1 Reach 6
Waste 1 0.000 1 0.000 1 0.000 1 0.000
Tributary 1 0.380 1 2.000 1 1.000 1 9.280
* Runoff 1 0.380 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 1 0.770 1 2.000 1 1.000 1 9.280
* Runoff 1 1.700 1 2.000 1 1.000 1 9.280
Segment 1 Reach 8
Waste 1 0.000 1 0.000 ► 0.000 1 0.000
Tributary 1 0.000 1 2.000 1 1.000 I 9.280
* Runoff 1 1.430 1 2.000 1 1.000 1 9.280

Segment 1 Reach 9
Waste I 0.000 I 0.000 1 0.000 I 0.000
Tributary I 2.720 I 2.000 1 1.000 I 9.280
* Runoff 1 2.310 1 2.000 1 1.000 I 9.280
Segment 2 Reach 1
Waste I 0.000 I 0.000 1 0.000 1 0.000
Headwaters) 0.000 I 2.000 1 1.000 I 9.280
Tributary 1 11.960 1 2.000 1 1.000 I 9.280
* Runoff 1 2.310 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 3.850 1 2.000 1 1.000 1 9.280
* Runoff 1 2.310 1 2.000 1 1.000 1 9.280
Segment 2 Reach 3
Waste I 4.650 160.000 I 0.000 1 0.000
Tributary 1 0.000 1 2.000 I 1.000 1 9.280
* Runoff 1 2.310 1 2.000 1 1.000 1 9.280
Segment 2 Reach 4
Waste I 0.000 1 0.000 1 0.000 1 0.000
Tributary 1 2.220 1 2.000 1 1.000 1 9.280
* Runoff 1 2.310 1 2.000 1 1.000 1 9.280
* Runoff flow is in cfs/mile

WINTER
QEFF=3.0 MGD, BOD5=30 MG/L
I Seg # I Reach # I Seg Mi I D.O. I CBOD I NBOD
1 1 0.00 6.87 17.04 24.07
1 1 0.02 6.88 17.03 24.07
1 1 0.04 6.88 17.02 24.06
1 1 0.06 6.89 17.02 24.05
1 1 0.08 6.89 17.01 24.04
1 1 0.10 6.90 17.01 24.03
1 1 0.12 6.90 17.00 24.03
1 1 0.14 6.90 16.99 24.02
1 • 1 0.16 6.91 16.99 24.01
1 1 0.18 6.91 16.98 24.00
1 1 0.20 6.92 16.97 23.99
1 1 0.22 6.92 16.97 23.99
1 1 0.24 6.93 16.96 23.98
1 1 0.26 6.93 16.95 23.97
1 2 0.26 7.34 14.33 19.94
1 2 0.30 7.35 14.32 19.93
1 2 0.34 7.35 14.31 19.92
1 2 0.38 7.35 14.30 19.90
1 2 0.42 7.36 14.29 19.89
1 2 0.46 7.36 14.28 19.88
1 2 0.50 7.37 14.27 19.87
1 2 0.54 7.37 14.26 19.85
1 2 0.58 7.37 14.25 19.84
1 2 0.62 7.38 14.24 19.83
1 2 0.66 7.38 14.23 19.81
1 2 0.70 7.38 14.22 19.80
1 2 0.74 7.39 14.21 19.79
1 2 0.78 7.39 14.20 19.78
1 2 0.82 7.39 14.19 19.76
1 2 0.86 7.40 14.18 19.75
1 2 0.90 7.40 14.17 19.74
1 2 0.94 7.40 14.16 19.72
1 2 0.98 7.41 14.15 19.71
1 3 0.98 8.00 10.30 13.78
1 3 1.18 8.00 10.26 13.73
1 3 1.38 8.01 10.22 13.68
1 3 1.58 8.01 10.18 13.63
1 3 1.78 8.01 10.14 13.58
1 3 1.98 8.02 10.11 13.53
1 3 2.18 8.02 10.07 13.48
1 4 2.18 8.03 9.98 13.35
1 4 2.38 8.04 9.94 13.30
1 4 2.58 8.04 9.90 13.24
1 4 2.78 8.04 9.86 13.19
1 4 2.98 8.05 9.82 13.13
1 4 3.18 8.05 9.78 13.08
1 4 3.38 8.05 9.74 13.03
1 4 3.58 8.06 9.70 12.97
1 4 3.78 8.06 9.66 12.92
1 • 4 3.98 8.07 9.62 12.87
1 4 4.18 8.07 9.58 12.82
1 4 4.38 8.07 9.54 12.76
1 5 4.38 8.07 9.55 12.79
1 5 4.43 8.07 9.54 12.78
1 5 4.48 8.07 9.53 12.77
1 5 4.53 8.07 9.52 12.75
Flow I
41.85
41.85
41.85
41.85
41.86
41.86
41.86
41.86
41.86
41.86
41.87
41.87
41.87
41.87
50.77
50.77
50.78
50.78
50.78
50.79
50.79
50.79
50.80
50.80
50.80
50.81
50.81
50.81
50.82
50.82
50.82
50.83
50.83
74.43
74.50
74.58
74.66
74.73
74.81
74.88
75.68
75.80
75.92
76.03
76.15
76.26
76.38
76.50
76.61
76.73
76.84
76.96
76.99
77.02
77.05
77.08

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1. 5 4.58 8.07 9.51 12.74 77.10
1 5 4.63 8.08 9.50 12.73 77.13
1 5 4.68 8.08 9.49 12.72 77.16
1 5 4.73 8.08 9.48 12.70 77.19
1 5 4.78 8.08 9.47 12.69 77.22
1 5 4.83 8.08 9.46 12.68 77.25
1 5 4.88 8.08 9.46 12.66 77.28
1 5 4.93 8.08 9.45 12.65 77.31
1 5 4.98 8.08 9.44 12.64 77.34
1 5 5.03 8.08 9.43 12.63 77.37
1 5 5.08 8.09 9.42 12.61 77.39
1 5 5.13 8.09 9.41 12.60 77.42
1 5 5.18 8.09 9.40 12.59 77.45
1 5 5.23 8.09 9.39 12.57 77.48
1 5 5.28 8.09 9.38 12.56 77.51
1 5 5.33 8.09 9.37 12.55 77.54
1 5 5.38 8.09 9.36 12.54 77.57
1 5 5.43 8.09 9.35 12.52 77.60
1 5 5.48 8.09 9.34 12.51 77.63
1 5 5.53 8.10 9.33 12.50 77.66
1 5 5.58 8.10 9.32 12.49 77.68
1 5 5.63 8.10 9.31 12.47 77.71
1 5 5.68 8.10 9.30 12.46 77.74
1 5 5.73 8.10 9.29 12.45 77.77
1 5 5.78 8.10 9.28 12.44 77.80
1 5 5.83 8.10 9.27 12.42 77.83
1 5 5.88 8.10 9.26 12.41 77.86
1 5 5.93 8.11 9.25 12.40 77.89
1 5 5.98 8.11 9.25 12.39 77.92
1 5 6.03 8.11 9.24 12.37 77.95
1 6 6.03 8.11 9.20 12.32 78.33
1 6 6.13 8.12 9.18 12.30 78.36
1 6 6.23 8.12 9.17 12.28 78.40
1 6 6.33 8.13 9.15 12.26 78.44
1 6 6.43 8.13 9.13 12.24 78.48
1 6 6.53 8.13 9.12 12.22 78.52
1 6 6.63 8.14 9.10 12.20 78.55
1 6 6.73 8.14 9.08 12.18 78.59
1 6 6.83 8.14 9.07 12.15 78.63
1 6 6.93 8.15 9.05 12.13 78.67
1 6 7.03 8.15 9.03 12.11 78.71
1 6 7.13 8.16 9.02 12.09 78.74
1 6 7.23 8.16 9.00 12.07 78.78
1 6 7.33 8.16 8.98 12.05 78.82
1 6 7.43 8.17 8.97 12.03 78.86
1 6 7.53 8.17 8.95 12.01 78.90
1 6 7.63 8.17 8.94 11.99 78.93
1 6 7.73 8.18 8.92 11.97 78.97
1 6 7.83 8.18 8.90 11.95 79.01
1 6 7.93 8.18 8.89 11.93 79.05
1 6 8.03 8.19 8.87 11.91 79.09
1 6 8.13 8.19 8.85 11.89 79.12
1 7 8.13 8.20 8.79 11.79 79.89
1 7 8.23 8.21 8.76 11.75 80.06
1 7 8.33 8.21 8.73 11.71 80.23
1 7 8.43 8.22 8.71 11.68 80.40
1 7 8.53 8.22 8.68 11.64 80.57
1 7 8.63 8.23 8.65 11.60 80.74
1 7 8.73 8.23 8.63 11.57 80.91
1 7 8.83 8.24 8.60 11.53 81.08

1 7 8.93 8.24 8.58 11.50 81.25
1 7 9.03 8.24 8.55 11.46 81.42
1 7 9.13 8.25 8.52 11.42 81.59
1 7 9.23 8.25 8.50 11.39 81.76
1 7 9.33 8.26 8.47 11.35 81.93
1 7 9.43 8.26 8.45 11.32 82.10
1 7 9.53 8.27 8.42 11.28 82.27
1 7 9.63 8.27 8.40 11.25 82.44
1 7 9.73 8.28 8.37 13.21 82.61
1 7 9.83 8.28 8.35 11.18 82.78
1 7 9.93 8.28 8.32 11.14 82.95
1 7 10.03 8.29 8.30 11.11 83.12
1 7 10.13 8.29 8.27 11.07 83.29
1 8 10.13 8.29 8.27 11.07 83.29
1 8 10.16 8.31 8.26 11.06 83.34
1 8 10.20 8.32 8.26 11.05 83.39
1 8 10.23 8.34 8.25 11.04 83.44
1 8 10.27 8.35 8.24 11.03 83.49
1 8 10.30 8.36 8.23 11.02 83.54
1 8 10.34 8.37 8.22 11.01 83.59
1 8 10.37 8.39 8.22 11.00 83.64
1 8 10.41 8.40 8.21 10.99 83.69
1 8 10.44 8.41 8.20 10.98 83.74
1 8 10.48 8.43 8.19 10.96 83.79
1 9 10.48 8.45 8.00 10.65 86.51
1 9 10.73 8.57 7.93 10.55 87.10
1 9 10.99 8.67 7.86 10.45 87.69
1 9 11.24 8.77 7.80 10.36 88.28
1 9 11.50 8.86 7.73 10.26 88.87
1 9 11.75 8.93 7.67 10.17 89.46
1 9 12.01 9.01 7.60 10.08 90.05
1 9 12.26 9.07 7.54 9.99 90.64
1 9 12.52 9.13 7.48 9.90 91.23
1 9 12.77 9.18 7.42 9.81 91.82
1 9 13.03 9.23 7.36 9.72 92.40
2 1 0.00 9.24 6.74 8.72 104.36
2 1 0.05 9.25 6.73 8.71 104.48
2 1 0.10 9.26 6.72 8.69 104.60
2 1 0.15 9.27 6.71 8.68 104.71
2 1 0.20 9.28 6.70 8.67 104.83
2 1 0.25 9.29 6.69 8.65 104.94
2 1 0.30 9.30 6.68 8.64 105.06
2 1 0.35 9.31 6.67 8.63 105.17
2 1 0.40 9.32 6.67 8.61 105.29
2 1 0.45 9.33 6.66 8.60 105.40
2 1 0.50 9.34 6.65 8.58 105.52
2 2 0.50 9.33 6.48 8.32 109.37
2 2 0.51 9.34 6.48 8.32 109.39
2 2 0.52 9.34 6.48 8.31 109.42
2 2 0.53 9.34 6.48 8.31 109.44
2 2 0.54 9.34 6.48 8.31 109.46
2 2 0.55 9.34 6.47 8.31 109.48
2 2 0.56 9.34 6.47 8.30 109.51
2 2 0.57 9.35 6.47 8.30 109.53
2 2 0.58 9.35 6.47 8.30 109.55
2 2 0.59 9.35 6.47 8.30 109.58
2 2 0.60 9.35 6.47 8.29 109.60
2 3 0.60 8.97 8.64 7.96 114.25
2 3 0.80 9.03 8.60 7.91 114.72
2 3 1.00 9.09 8.55 7.86 115.18

2' 3 1.21 9.14 8.50 7.82 115.65
2 3 1.41 9.19 8.45 7.77 116.12
2 3 1.61 9.24 8.41 7.73 116.58
2 3 1.81 9.28 8.36 7.68 117.05
2 3 2.01 9.32 8.31 7.64 117.52
2 3 2.22 9.35 8.27 7.60 117.98
2 3 2.42 9.39 8.22 7.55 118.45
2 3 2.62 9.42 8.18 7.51 118.92
2 4 2.62 9.42 8.06 7.39 121.14
2 4 3.46 9.53 7.89 7.23 123.08
2 4 4.30 9.62 7.72 7.07 125.02
2 4 5.14 9.69 7.56 6.92 126.96
2 4 5.98 9.74 7.40 6.77 128.90
2 4 6.82 9.78 7.25 .62 130.84
2 4 7.66 9.81 7.11 6.48 132.78
2 4 8.50 9.83 6.96 6.35 134.72
2 4 9.34 9.85 6.83 6.22 136.66
2 4 10.18 9.87 6.69 6.09 138.60
2 4 11.02 9.88 6.56 5.97 140.54
I Seg # I Reach # I Seg Mi I D.Q. I CBOD I NBOD I Flow I

MODEL RESULTS
Discharger : CITY OF MOUNT AIRY
Receiving Stream : ARARAT RIVER
SUMMER
QEFF=3.0 MGD, BOD5=30 MG/L
NH3-N=1 MG/L
The End D.O. is 7.64 mg/1.
The End CBOD is 6.84 mg/l.
The End NBOD is 3.46 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 5.01 0.26 1
Reach 1 60.00 58.50 5.00 7.00000
Reach 2 0.00 0.00 0.00 0.00000
Reach 3 0.00 0.00 0.00 0.00000
Reach 4 0.00 0.00 0.00 0.00000
Reach 5 45.00 90.00 0.00 0.01800
Reach 6 0.00 0.00 0.00 0.00000
Reach 7 0.00 0.00 0.00 0.00000
Reach 8 0.00 0.00 0.00 0.00000
Reach 9 0.00 0.00 0.00 0.00000
Segment 2 6.67 0.60 3
Reach 1 0.00 0.00 0.00 0.00000
Reach 2 0.00 0.00 0.00 0.00000
Reach 3 60.00 _4.50-) 0.00 3.00000
Reach 4 0.00 0.00 0.00 0.00000
i)out.> 14AV6 To t2R_, A)t 13 -/J Iy".j /1 I o f n l,L !') 7Ri=�fZ
70
44,4E No t/&pAcj ` mac :-/. 9F; F��9��. //', L,
1 Z I, s VPS.TF2_ J/ / 0Dr cF,7Es r Ftilc, .Jr- N!_! „
< D, Z2 , q Fore_ -3
VthLt 1-646 1 L(«(T ; r,./_:;.. r-:ri�J
t -1 l 6,2/N s ;tz -AuA. s;p.,� �P.P J) = 1 S /k

I Seg # I Reach # I Seg Mi I D.O. I CBOD
1 1 0.00 5.32 26.44
1 1 0.02 5.29 26.42
1 1 0.04 5.27 26.40
1 1 0.06 5.24 26.38
1 1 0.08 5.22 26.35
1 1 0.10 5.19 26.33
1 1 0.12 5.17 26.31
1 1 0.14 5.15 26.29
1 1 0.16 5.12 26.27
1 1 0.18 5.10 26.25
1 1 0.20 5.08 26.23
1 1 0.22 5.06 26.21
1 1 0.24 5.03 26.19
1 1 0.26 5.01 26.16
1 2 0.26 5.64 19.96
1 2 0.30 5.60 19.93
1 2 0.34 5.57 19.90
1 2 0.38 5.53 19.88
1 2 0.42 5.50 19.85
1 2 0.46 5.47 19.82
1 2 0.50 5.44 19.79
1 2 0.54 5.41 19.76
1 2 0.58 5.37 19.73
1 2 0.62 5.35 19.70
1 2 0.66 5.32 19.68
1 2 0.70 5.29 19.65
1 2 0.74 5.26 19.62
1 2 0.78 5.23 19.59
1 2 0.82 5.20 19.56
1 2 0.86 5.18 19.53
1 2 0.90 5.15 19.51
1 2 0.94 5.13 19.48
1 2 0.98 5.10 19.45
1 3 0.98 6.05 12.39
1 3 1.18 5.97 12.31
1 3 1.38 5.90 12.22
1 3 1.58 5.83 12.14
1 3 1.78 5.77 12.06
1 3 1.98 5.71 11.98
1 3 2.18 5.66 11.90
1 4 2.18 5.68 11.77
1 4 2.38 5.63 11.68
1 4 2.58 5.59 11.60
1 4 2.78 5.54 11.52
1 4 2.98 5.51 11.43
1 4 3.18 5.47 11.35
1 4 3.38 5.44 11.27
1 4 3.58 5.41 11.19
1 4 3.78 5.39 11.11
1 4 3.98 5.36 11.03
1 4 4.18 5.34 10.95
1 4 4.38 5.32 10.88
1 5 4.38 5.32 10.89
1 5 4.43 5.32 10.87
1 5 4.48 5.31 10.85
1 5 4.53 5.31 10.83
SUMMER
QEFF=3.0 MGD, BOD5=30 MG/L
NH3-N=1 MG/L
NBOD I Flow I
25.23 25.75
25.20 25.75
25.17 25.75
25.15 25.75
25.12 25.76
25.10 25.76
25.07 25.76
25.04 25.76
25.02 25.76
24.99 25.76
24.96 25.77
24.94 25.77
24.91 25.77
24.88 25.77
18.75 34.67
18.72 34.67
18.68 34.68
18.65 34.68
18.61 34.68
18.57 34.69
18.54 34.69
18.50 34.69
18.47 34.70
18.43 34.70
18.40 34.70
18.36 34.71
18.33 34.71
18.29 34.71
18.26 34.72
18.22 34.72
18.19 34.72
18.15 34.73
18.12 34.73
11.19 58.33
11.09 58.40
11.00 58.48
10.90 58.56
10.81 58.63
10.72 58.71
10.62 58.78
10.50 59.58
10.40 59.70
10.30 59.82
10.21 59.93
10.12 60.05
10.02 60.16
9.93 60.28
9.84 60.40
9.75 60.51
9.66 60.63
9.57 60.74
9.49 60.86
9.52 60.89
9.50 60.92
9.48 60.95
9.46 60.98

1' 5 4.58 5.30 10.81 9.44 61.00
1 5 4.63 5.30 10.80 9.42 61.03
1 5 4.68 5.30 10.78 9.39 61.06
1 5 4.73 5.29 10.76 9.37 61.09
1 5 4.78 5.29 10.74 9.35 61.12
1 5 4.83 5.29 10.72 9.33 61.15
1 5 4.88 5.28 10.70 9.31 61.18
1 5 4.93 5.28 10.68 9.29 61.21
1 5 4.98 5.28 10.66 9.27 61.24
1 5 5.03 5.27 10.64 9.25 61.27
1 5 5.08 5.27 10.63 9.23 61.29
1 5 5.13 5.27 10.61 9.20 61.32
1 5 5.18 5.27 10.59 9.18 61.35
1 5 5.23 5.26 10.57 9.16 61.38
1 5 5.28 5.26 10.55 9.14 61.41
1 5 5.33 5.26 10.53 9.12 61.44
1 5 5.38 5.26 10.51 9.10 61.47
1 5 5.43 5.25 10.49 9.08 61.50
1 5 5.48 5.25 10.48 9.06 61.53
1 5 5.53 5.25 10.46 9.04 61.56-
1 5 5.58 5.25 10.44 9.02 61.58
1 5 5.63 5.25 10.42 9.00 61.61
1 5 5.68 5.25 10.40 8.98 61.64
1 5 5.73 5.24 10.38 8.96 61.67
1 5 5.78 5.24 10.37 8.94 61.70
1 5 5.83 5.24 10.35 8.92 61.73
1 5 5.88 5.24 10.33 8.90 61.76
1 5 5.93 5.24 10.31 8.88 61.79
1 5 5.98 5.24 10.29 8.86 61.82
1 5 6.03 5.24 10.28 8.84 61.85
1 6 6.03 5.25 10.22 8.79 62.23
1 6 6.13 5.25 10.19 8.76 62.26
1 6 6.23 5.25 10.16 8.72 62.30
1 6 6.33 5.26 10.13 8.69 62.34
1 6 6.43 5.26 10.09 8.65 62.38
1 6 6.53 5.26 10.06 8.62 62.42
1 6 6.63 5.26 10.03 8.58 62.45
1 6 6.73 5.26 10.00 8.55 62.49
1 6 6.83 5.27 9.96 8.52 62.53
1 6 6.93 5.27 9.93 8.48 62.57
1 6 7.03 5.27 9.90 8.45 62.61
1 6 7.13 5.28 9.87 8.42 62.64
1 6 7.23 5.28 9.84 8.38 62.68
1 6 7.33 5.28 9.81 8.35 62.72
1 6 7.43 5.29 9.77 8.32 62.76
1 6 7.53 5.29 9.74 8.28 62.80
1 6 7.63 5.29 9.71 8.25 62.83
1 6 7.73 5.30 9.68 8.22 62.87
1 6 7.83 5.30 9.65 8.19 62.91
1 6 7.93 5.30 9.62 8.16 62.95
1 6 8.03 5.31 9.59 8.12 62.99
1 6 8.13 5.31 9.56 8.09 63.02
1 7 8.13 5.34 9.46 8.01 63.79
1 7 8.23 5.34 9.42 7.96 63.96
1 7 8.33 5.35 9.37 7.92 64.13
1 7 8.43 5.36 9.33 7.87 64.30
1 7 8.53 5.37 9.29 7.83 64.47
1 7 8.63 5.37 9.24 7.78 64.64
1 7 8.73 5.38 9.20 7.74 64.81
1 7 8.83 5.39 9.15 7.69 64.98

1 7 8.93 5.40 9.11 7.65 65.15
1 7 9.03 5.40 9.07 7.61 65.32
1 7 9.13 5.41 9.03 7.57 65.49
1 7 9.23 5.42 8.98 7.52 65.66
1 7 9.33 5.43 8.94 7.48 65.83
1 7 9.43 5.44 8.90 7.44 66.00
1 7 9.53 5.44 8.86 7.40 66.17
1 7 9.63 5.45 8.82 7.36 66.34
1 7 9.73 5.46 8.78 7.32 66.51
1 7 9.83 5.47 8.73 7.28 66.68
1 7 9.93 5.47 8.69 7.24 66.85
1 7 10.03 5.48 8.65 7.20 67.02
1 7 10.13 5.49 8.61 7.16 67.19
1 8 10.13 5.49 8.61 7.16 67.19
1 8 10.16 5.51 8.60 7.14 67.24
1 8 10.20 5.53 8.59 7.13 67.29
1 8 10.23 5.55 8.57 7.12 67.34
1 8 10.27 5.57 8.56 7.10 67.39
1 8 10.30 5.59 8.55 7.09 67.44
1 8 10.34 5.61 8.54 7.08 67.49
1 8 10.37 5.63 8.52 7.06 67.54
1 8 10.41 5.65 8.51 7.05 67.59
1 8 10.44 5.67 8.50 7.04 67.64
1 8 10.48 5.69 8.48 7.02 67.69
1 9 10.48 5.71 8.40 6.95 68.56
1 9 10.73 5.90 8.31 6.85 68.93
1 9 10.99 6.07 8.22 6.76 69.29
1 9 11.24 6.22 8.14 6.67 69.66
1 9 11.50 6.35 8.05 6.58 70.02
1 9 11.75 6.47 7.97 6.49 70.39
1 9 12.01 6.57 7.88 6.41 70.75
1 9 12.26 6.67 7.80 6.32 71.12
1 9 12.52 6.75 7.72 6.24 71.48
1 9 12.77 6.83 7.64 6.16 71.85
1 9 13.03 6.90 7.56 6.08 72.21
2 1 0.00 6.92 7.28 5.82 76.00
2 1 0.05 6.94 7.27 5.81 76.07
2 1 0.10 6.95 7.25 5.79 76.14
2 1 0.15 6.96 7.24 5.78 76.21
2 1 0.20 6.97 7.22 5.77 76.29
2 1 0.25 6.98 7.21 5.75 76.36
2 1 0.30 7.00 7.20 5.74 76.43
2 1 0.35 7.01 7.18 5.72 76.50
2 1 0.40 7.02 7.17 5.71 76.57
2 1 0.45 7.03 7.15 5.69 76.64
2 1 0.50 7.04 7.14 5.68 76.72
2 2 0.50 7.04 7.06 5.61 77.94
2 2 0.51 7.05 7.06 5.60 77.95
2 2 0.52 7.05 7.05 5.60 77.96
2 2 0.53 7.05 7.05 5.60 77.98
2 2 0.54 7.05 7.05 5.59 77.99
2 2 0.55 7.05 7.04 5.59 78.01
2 2 0.56 7.06 7.04 5.59 78.02
2 2 0.57 7.06 7.04 5.59 78.04
2 2 0.58 7.06 7.04 5.58 78.05
2 2 0.59 7.06 7.03 5.58 78.06
2 2 0.60 7.06 7.03 5.58 78.08
2 3 0.60 6.67 10.01 5.52 82.73 -4- PIL°7 Mrtil.
2 3 0.80 6.73 9.93 5.46 83.02
2 3 1.00 6.79 9.85 5.41 83.31

2' 3 1.21 6.85 9.78 5.36 83.59
2 3 1.41 6.90 9.70 5.31 83.88
2 3 1.61 6.95 9.63 5.26 84.17
2 3 1.81 6.99 9.55 5.21 84.46
2 3 2.01 7.03 9.48 5.16 84.75
2 3 2.22 7.07 9.41 5.11 85.04
2 3 2.42 7.10 9.33 5.07 85.33
2 3 2.62 7.13 9.26 5.02 85.62
2 4 2.62 7.13 9.20 4.98 86.33
2 4 3.46 7.26 8.92 4.80 87.53
2 4 4.30 7.34 8.66 4.62 88.73
2 4 5.14 7.41 8.40 4.46 89.93
2 4 5.98 7.46 8.15 4.30 91.13
2 4 6.82 7.50 7.91 4.14 92.33
2 4 7.66 7.54 7.68 3.99 93.53
2 4 8.50 7.57 7.46 3.85 94.74
2 4 9.34 7.59 7.24 3.72 95.94
2 4 10.18 7.62 7.04 3.59 97.14
2' 4 11.02 7.64 6.84 3.46 98.34
I Seg # I Reach # I Seg Mi I D.O. I CBOD I NBOD I Flow I