NC0081621_Wasteload Allocation_19930511

FACT SHEET FOR WASTELOAD ALLOCATION
Request # 6722
Facility Name:
Cabarrus Co. Utilities Dept.
Muddy Creek WWTP
NPDES No.:
NC0081621
Type of Waste:
Domestic - 100%
Facility Status:
Proposed
Permit Status:
New
Receiving Stream:
Rocky River
Stream Classification:
C
S ubbasin:
03-07-12
County:
Cabarrus�
Stream Characteristic:
Regional Office:
MooresvilleP° i
US GS #
Requestor:
Charles M. Lowe
Date:
Date of Request:
1/28/92
Drainage Area (mi2): 384
Topo Quad:
G 17 NW
Summer 7Q10 (cfs): 21
Winter 7Q10 (cfs):
Average Flow (cfs): 412
30Q2 (cfs):
IWC (%): 2.2
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
The proposed discharge location is to a section of the Rocky River where a calibrated
QUAL2E water quality model has been developed. The recommended BODS and NH3-N limits
are consistent with the Rocky River model report of March 31, 1993.
Special Schedule Requirements and additional comments from Reviewers:
Recommended by: �� Date: �/a / T.3
Reviewed by
A I
Instream Assessment;
Regional Supervisor:
Permits & Engineerin
RETURN TO TECHNICAL SERVICES BY:
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Rm
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4i1 ii�: •J;{:.N{,. ^.Fi�u JYli1 tS0.t
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CONVENTIONAL PARAMETERS
Recommended Limits:
Monthly Average
Summer
Winter
WQ or EL
Wasteflow (MGD):
0.3
0.3
BOD5 (mg/l):
10
20
wq
NH3N (mg/1):
4.0
8.0
wq
DO (mg/1):
5
5
wq
TSS (mg/1):
30
30
el
Fecal Col. (/100 ml):
200
200
el
pH (SU):
6-9
6-9
el
Residual Chlorine (µg/l):
28
28
el
Oil & Grease (mg/1):
TP (mg/1):
TN (mg/1):
_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.
•'
No parameters are water quality limited, but this discharge may affect future allocations.
INSTREAM MONITORING REQUIREMENTS
Upstream Location: 200 feet upstream of discharge or SR 1114.
Downstream Location: SR 1140
Parameters: Temp., DO, Cond., Fecal Col., pH
Special instream monitoring locations or monitoring frequencies:
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Special Instructions or Conditions
Wasteload sent to EPA? (Major) _N_ (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? N (Y or N) If yes, explain with attachments.

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NCO081621
PERMITTEE NAME: Cabarrus County Utilities Department
FACILITY NAME: Muddy Creek WWTP
Facility Status: Proposed
Permit Status: New
Major Minor
Pipe No.: 001
Design Capacity: 0.30 MGD
Domestic (% of Flow):
Industrial (% of Flow):
100 %
Comments:
Plant expansion to 0.60 MGD planned at time of renewal
RECEIVING STREAM: Rocky River
Class: C
Sub -Basin: 03-07-12
Reference USGS Quad: G 17 NW (please attach)
County: Cabarrus
Regional Office: Mooresville Regional Office
Previous Exp. Date: 00/00/00 Treatment Plant Class:
Classification changes within three miles:
No change
Requested by: Charles M. Lowe
Prepared by:
Reviewed by:
Date: 1/28/92
Date: � C/ `l3
Dab
Modeler
Date Rec.
#
"'a."Drainage Area (mi Avg. Streamflow (cfs): Y/a
7Q10 (cfs) Winter 7Q10 (cfs) 30Q2 (cfs)
Toxicity Limits: IWC % Acute/Chronic
Instream Monitoring:
Parameters. ?emo. , D d or���41'�y ', A Fila / �e )/174 y,
Upstream i Location D D '-4
Downstream Y Location crk / / 0
Effluent
Characteristics
Summer
Winter
BOD5 (mg/1)
10
a 0
NH3-N (mg/1)
y. 0
O
D.O. (mg/l)
S 0
IS-0
TSS (mg/1)
30
30
F. Col. (/100 ml)
a 0 0
R coo
pH (SU)
Comments:

u
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w W
CO 00 Q coo C.C. ("n o
to co co I ElCEO 1
00
[) / -COS \ 0` t _ ..•� o - i
O _
OOLI
r
(_o
I JJJ
O� s� o
500
161
\ i - � �� � i, ���� � -- �S /mil _ i i/i' w� �.._�`� �) `'; /� •\ \ 1'�
v
o, A 11
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- '
J
I
�� I v ! ❑ ji
600
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09
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WLA Notes
SRB
4/2/93
Cabarrus County Utilities Dept.
Muddy Creek WWTP
NC0081621
- Cabarrus County has applied for a permit for a new 0.30 MGD facility discharging to
the Rocky River. At the proposed discharge point the Rocky River has a 7Q 10 of 21 cfs.
- The proposed discharge location is approximately 12 miles below the Concord Regional
Rocky River WWTP (NC0036269). This location falls within the Rocky River study area
for which as QUAL2E model and a water quality management plan were developed.
Because of high instream waste concentrations at the proposed discharge location, it is
recommended that the facility receive summer permit limits of 32 mg/1 BODu, as
recommended by the March 31, 1993 report "A QUAL2E-UNCAS Application to the
Rocky River and Mallard Creek".
- It is recommended that the facility receive a summer BOD5 limit of 10 mg/l and 4 mg/1
NH3. Assuming a CBOD to BOD5 ratio of 1.5 for this 100% domestic discharge, this
will result in a BODu limit of 33 mg/l. This limit will protect the instream NH3 target of
1.0 mg/l. It is recommended that the facility receive winter limits of 20 mg/l BOD5 and 8
mg/l NH3.

1.4 Expected Wastewater Characteristics
The wastewater expected to be discharged to the Muddy Creek Wastewater Treatment
Plant will primarily be domestic wastewater. The existing industrial users and the
proposed Midland Business Park will discharge employee sanitary wastes. It is not
expected that there will be any significant industrial users contributing process
wastewater to the system. Should any future industrial user approach 25,000 gpd flow
of process wastewater, the County will implement an industrial pretreatment program.
The wastewater is expected to have the characteristics of normal domestic wastewater.
Because the entire sewer system will be new construction, the dilution effect of
infiltration/inflow will be less then in comparable older systems. For design purposes,
the wastewater is assumed to have the range of characteristics shown in Table 1-4.
1.5 Design Ca acity
1..1 Sewer Lines
Based on the above information, the gravity sewer lines will be sized to flow
one-half full at basin -wide peak flows for the 2012 projected wastewater flows.
A peaking factor of 3.8 was used to determine peak hourly flow rates based
1-6

on 2012 flows. The actual stream bed slopes were used. The resulting outfall
pipe sizes .are 18-inch diameter from the Midland Business Park to an unnamed
tributary just east of Midland, and 21-inch diameter from there to the
wastewater treatment plant.
The above pipe sizes were compared to the required capacity for a pipe
flowing full at peak flow for the ultimate basin development. For ultimate
considerations, the pipe sizes required were 21-inch and 24-inch respectively
for the two pipe reaches. Based on the uncertainty of the ultimate capacity
projections, the less restrictive criteria of one-half full at 2012 flow was used.
Appendix A contains detailed computations regarding outfall sizing.
1.5.2 Wastewater Treatment Plant
Based on the above considerations, and using a peak month to average annual
flow ratio of 1.2, the wastewater treatment plant will be designed for an initial
peak monthly average wastewater flow of 0.3 MGD, expandable in increments
to 1.8 MGD. The initial plant will provide capacity to the year 2000. It is
expected that a larger regional facility will replace the Muddy Creek WWTP
before flows exceed 1.8 MGD.
1.6 Proposed Effluent Limits
Table 1-5 presents the requested permit limits for the proposed Phase I project and
ultimate limits at greater than 1.8 MGD capacity. Because of the high assimilative
capacity of the Rocky River below Muddy Creek, no limits are proposed for Ammonia
or dissolved oxygen. The justification for secondary limits is contained in Section 5.
1-7

TABLE 1-5
Proposed Effluent Limits
Muddy Creek WWTP
Cabarrus County, North Carolina
:..:...:.......::.
Initial Phase I Development
Flow (MGD)
0.3
0.3
BODS (mg/1)
30
30
TSS (mg/1)
30
30
Proposed Ultimate Development
Flow (MGD)
1.8
1.8
BODS (mg/1)
30
30
TSS (mg/1)
30
30

w
i
w
9.
C
a
ti
IrD
IrD
W.
»
A�
Z
O
r_r
t%
MECHANICALLY AERATED O FUTURE EXPANSION
CLEANED GRIT
BAR SCREEN CHAMBER
__RAS_
0.6MGD 0.6MGD ram_ I — — -
I
I
.15MG 400
1 gpd/sf
I
700gpm I CHLORINE
CONTACT
CHAMBER 21—INC[i
RAW SEWAGE I EFFLUE N1
PUMPING I .15MG 400 TO ROCKY RIVER
� I
gpd/sf 0.6MGD
RAS----- J
C,DUAL AERATION DUAL
BASINS CLARIFIERS
I �
I I
�— — .0336MG — — — 0336MG
I �
I 1
SLUDGE
— — — DRYING BEDS LANDFILL
6,000 SF
l— — — 0336MG — — — 0336MG —i
DUAL LEGEND
DUAL AEROBIC SLUDGE
DIGESTERS HOLDING LIQUID
TANKS
— — — — SLUDGE
PROCESS SCHEMATIC

SECTION 5
STREAM MODELING RESULTS
5.1 Previous State Stream Modeling
The North Carolina DEM has completed a detailed modeling effort of the Rocky River
from Concord's Rocky River Regional WWTP downstream to approximately five miles
below the confluence with Muddy Creek. This modeling effort was originally reported
in a DEM Memorandum dated January 12, 1988, and was revised and refined in a
subsequent Memorandum dated April 3, 1989. The modeling was done using the
QUAL2E model, a widely accepted stream modeling program. The models were
calibrated using stream flow hydraulic and quality data obtained in October 1986 and
March 1988.
The most significant finding from the first modeling effort, was the high (6.0/day)
reaeration coefficient necessary to calibrate the model when sediment oxygen demand
(SOD) was considered. The State's level B desk top model uses rearation coefficients
based on the Tsivoglou Method which predicted a reaeration coefficient of only 1.64/day
for the study reaches.
The first modeling effort recommended the wasteload allocation shown in Table 5-1 for
the Rocky River Regional WWTP.
TABLE 5-1
State DEM Wasteload Allocations for Concord's Rocky River
Regional WWTP Based on Stream Modeling Results
Summer
n#er
Modeling of January 1988
Flow (MGD) 24
24
BODS (mg/1) 12
24
NH3-N (mg/1) 2
4
Dissolved Oxygen (mg/1) 6
6
Modeling of April 1989
Flow (MGD) 24
24
BODS (mg/1) 17
25
NH3-N (mg/1) 4
10
Dissolved Oxygen (mg/1) 6
3
5-1

The revised modeling effort included more detailed site specific information on the
relationship between stream flow, velocity, width, and depth. This modeling effort
resulted in an increased rearation coefficient of 7.0/day, which was even higher than the
previous model.
The revised modeling effort proposed the second set of wasteload allocation shown in
Table 5-1. These later limits were used in writing the current NPDES permit for the
Rocky River Regional WWTP.
Both DEM modeling efforts predicted a minimum dissolved oxygen sag approximately
three to four miles below the Rocky River Regional WWTP. This is approximately 10
to 11 miles above the site of the proposed Muddy Creek WWTP. Therefore, the
proposed discharge will be well into the dissolved oxygen recovery zone from the Rocky
River Regional WWTP.
5.2 Current State Stream Modeling
The State DEM intends to re -issue all Yadkin River Basin NPDES permits in 1994. In
preparation for this basin -wide wasteload allocation, the State is expanding the Rocky
River Stream Model described above to include the upper reaches of the Rocky River
from its source near Mooresville downstream to Concord's Rocky River Regional
WWTP. Preliminary discussions with DEM modelers and Mooresville field office water
quality engineers indicate that the upper Rocky River may be over allocated. More
restrictive effluent limits may be required for upstream dischargers. Preliminary results
of this modeling effort are expected by this Fall.
5.3 Stream Modeling in Support of Muddy Creek WWTP Discharge
A computer model of the Rocky River adapted from the State's level B desk top model
was developed for the Rocky River from Concord's Rocky River Regional WWTP to the
Yadkin River. The model was enhanced to allow for the effects of major tributary
inflow, multiple discharge points, and specific overriding of desk top procedures where
more definitive information on velocity, depth, or reaction rates is available. This
allowed the desk top model to be calibrated and used much the same as QUALM
5-2

5.3.1 Model Procedure
The approximately 56 river miles of the Rocky River below the Rocky River
Regional WWTP was divided into 89 reaches varying in length from 0.1 mile
just below the most upstream discharge to five miles in the lower reaches.
USGS topographic quadrangles were used to measure the approximate slope
in feet/mile for each reach.
Tributary inflows were obtained based on relationships for 30Q2 and 7Q10 per
square mile of drainage basin based on information developed by USGS for the
Rocky River at the Rocky River Regional WWTP and below Oakboro.
Upstream or tributary inflow was considered for upstream Rocky River,
Coldwater Creek, Dutch Buffalo Creek, Goose Creek, Crooked Creek, Big
Bear Creek, and Richardson Creek.
Instream clean water quality parameters were based on the same factors as the
State's modeling efforts. Dissolved oxygen was assumed to be at 90%
saturation at the design temperature. Table 5-2 presents the flow and clean
water quality parameters. The nitrogenous biological oxygen demand was
estimated as 4.5 times the ammonia nitrogen (as l) concentration. Ultimate
carbonaceous biological oxygen demand (CBOD) for wastewater discharges
was assumed as 2.5 times the five-day biological oxygen demand.
TABLE 5-2
Upstream and Tributary Flow and Water Quality Parameters Used in Stream Modeling
Muddy Creek WWTP
Caharrnc County V(n #h (•......�:....
Rocky a
Concord
Coldwater Dutch
Buffalo
Goose
Crooked
Big Bear Richardson
Drainage Area (sq mi)
278.00
112.00 94.00
63.00
59.00
182.00 160.00
Annual Average (cfs)
300.000
112.00 94.00
63.00
59.00
182.00 160.00
7Q10 Summer (cfs)
14.000
4.00 4.20
2.82
2.64
8.14 7.16
7Q10 Winter (cfs)
25.000
7.14 7.51
2.82
2.64
8.14 7.16
30Q2 (cfs)
33.000
9.43 9.91
6.64
6.22
19.19 16.87
Summer DO (mg/1)
7.500
7.500 7.500
7.500
7.500
7.500 7.500
Winter DO (m /1)
9.275
9.275 9.275
9.275
9.275
9.275 9.275
Summer CBOD (m /1)
2.00
2.00 2.00
2.00
2.00
2.00 2.00
3.00 3.00
0.45 0.45
Winter CBOD (m /1)
3.00
3.00 3.00
3.00
3.00
Summer NBOD (mg/1) 1
0.45 1
0.45 0.45
0.45 1
0.45
Winter NBOD (mg/1)
0.45 1
0.45 0.45 1
0.45
0.45
0.45 0.45
5-3

5.3.2 Model Calibration
The modified desk top model was calibrated using the hydraulic relationships,
and data used in calibrating the State's April 3, 1989 model. The stream flow
at the time of calibration data collection was approximately 89 % of the
predicted 7Q 10. Therefore, for calibration, the stream flows shown in Table
5-2 were multiplied by 0.89. Where calibration data was available, the model
reaeration rate was adjusted by reach until the predicted profile matched the
calibration data as closely as possible. Below Hwy 24-27, the reaeration rate
was calculated using the Churchill equation. The Churchill equation most
closely approximated the observed reaeration rates in the upper reaches where
calibration data was available. For this reason, it was selected over the
Tsivoglou equation.
Rocky
River DO Profile Model
Model Calibration
12
1 O
corcad WWTP
Q=11.7 MHO, Mz 13.5 ffq , Mi3_a4 RIgX 00=6 mgA
8R 1114
E
im 7= \
O
4
coawd WWM
codes CM*
2
��yp,��/��y MuWy ama W*7P sne
1 Wi[T� G17f1aylOp1
IO
0
2 4
6 8 10 12 14 16 18 20
River Miles Below Discharge
— SattlraDoal DO
— OO with $OD — Perma Lim[ CD MeasurW Values
L" G 1 I*IL _�•
•.
1 16u. v- -7-j n.dubl auuu Results for Roc B ver Dissolved Oxygen Profile Model Using
Modified Desk Top Model
5-4

Figure 5-1 presents the results of model calibration. The observed Dissolved
oxygen at SR 1114 was much higher than could reasonably be predicted using
generally accepted maximum reaeration coefficients. The State's April, 1989
calibration also underestimated the dissolved oxygen at SR 1114.
DO Below Concord WWTP
10 Rocky River 10/8-9/86
9
8
7 :Dp
6 + +
c
= 5
O
4
3
2
Z) Predicted + Observed
1
0 0 0.8 1.6 2.4 3.2 4 4.8 5.6 6.4 7.2 $ 8.8 9.6 10.4 11.2 12 12.8 13.6 14.4 15.2
Distance in miles
.5... %-a"Ul"LJVLI nV,Suus rrum lvk-UhM April !Y89 Rocky River Dissolved
Oxygen Profile Model (Source, DEM Memorandum dated April 3, 1989)
For comparative purposes, the State's April, 1989 calibration run is presented
in Figure 5-2. The distance scales between Figures 5-1 and 5-2 are offset by
approximately 2.4 miles since the State's station 0+00 is approximately 2.4
miles above the Rocky River Regional WWTP. The model used in this study
has Station 0+00 at the WWTP discharge point.
Appendix B contains a complete printout of the calibration modeling results
used in this study.
5-5

5.3.3 Proposed Wasteload Allocation
The calibrated model was then used to predict stream dissolved oxygen under
several potential wasteload allocations. The first run considered summer
conditions with the Rocky River Regional Yv'WTP operating at current permit
limits and current flows. Current flows result in less dilution at the Muddy
Creek WWTP site and consequently more severe discharge restrictions. The
model was used to predict the dissolved oxygen profile with and without the
proposed Muddy Creek WWTP discharge. Figure 5-3 presents the predicted
dissolved oxygen profile with a 0.3 MGD secondary treatment discharge at
Muddy Creek added to the existing discharges at Concord and Oakboro. Also
plotted is the predicted profile without any discharge at Muddy Creek
considering only the existing Rocky River Regional WWTP and the Oakboro
WWTP discharge. The two profiles are virtually indistinguishable, indicating
that the proposed discharge has negligible effect on the Rocky River.
The low predicted dissolved oxygen response is a result of two factors. The
first being the relative magnitude of the small proposed discharge to the total
Rocky River flow. The second is the high reaeration capacity of the Rocky
River below Muddy Creek. The above demonstrated response supports the
suitability of secondary limits at the proposed Muddy Creek WWTP.
A second model run was made using the full 24 MGD permit allocation at
Concord's Rocky River Regional WWTP and an ultimate capacity of 2.5
MGD from the Muddy Creek WWTP. Figure 5-4 presents the results of this
model run. At a discharge level of 2.5 MGD, the Muddy Creek WWTP
exerts a noticeable impact on the predicted dissolved oxygen response
compared to the response without the discharge. However, the stream
standards are still maintained, indicating the suitability of secondary limits at
higher ultimate flows.
5-6

CD
E
C
O
0
Rocky River DO Profile Model
Proposed Allocation w/ Muddy Creek WWTP
12
caxwd wwrp
Q=12 MGD, BOD5=17 "W, NM=4 nV, DO=6 mo
10- Muddy creek wwrP j
0�-- 0
or3� ��BODS=30 mg/1, NH3=25 mg�l, D0=gll 0 m
�J
41
II .; conc«d WWTP creekire Bq wwrP ssear Creek/oalmoro WWTP
2� I cokkw ' Goose creek
Dutch Melo Cnmk 1� ��CrOOW creek �nard�, Creek
0 \
0 5 10 15 20 25 30 35 40 45 5055
River Miles Below Upstream Discharge
seftn w DO — DO *U d* Crk WWTP -- Stream Sw lord — DO wlow" W"
Ci C ? T1_.__ �! _� _7 T ■ �
1 ibUl G -� i 1 CwLMU I%MKy rover Dissowea oxygen Yrolile with 0.3 MGD Secondary
Treatment Discharge - Muddy Creek WWTP, Cabarrus County, North
Carolina
Of interest is the predicted response in the reaches below Concord's Rocky
River Regional WWTP. This model predicts a DO standard violation at the
permitted flow, BOD5 and NH3-N levels. While calibrated to the same data,
the modified desk top model used in this study appears to be more
conservative than the QUAL2E model used by the State in setting the Rocky
River Regional WWTP permit limits.
Appendix C contains the complete printout for the model run at ultimate
allocations.
5-7

I Rocky River DO Profile Model �I
Proposed Allocation w/Muddy Creek WWTP
E
C
0
0
12
Cormd WWTP
0=24 MGD, BODE=17 ffW, NH3=4 nW, DO=B nW
101 Muddy creek WWTP
O= 2.5 MGD, BOD5=30 nVl NH3=25 mgA, D0=0 mgl
Oakbm WWTP
8 =0.5 ww. am=w ma. Nib=25 mat W=6 niftA
4
concord WWTP 1 MW* Creek WWTP Bile
\8'ip Beer Creek/oeidoro WWTP
2 / coi*mw Creek Goose creek
Dulch &fielo meek c rand Creek �wdwo, Creek
0
0 5 10 15 20 25 30 35 40 45 W M
River Miles Below Upstream Discharge
(— setraion Do — Do WMud* CA WWTP —storm SwWwd — Do wfC+.r.nc wwTP:
r igurr z-w rreaictea tcocKy Kiver Dissolved Oxygen Profile with 2.5 MGD Secondary
Treatment Discharge - Muddy Creek WWTP, Cabarrus County, North
Carolina

Computation
Jeb Ne00187-037-018 No
HDR
Proted Muddy Creek NPDES Application c«npu�d RDH Dag10i0�191
s�, Prelimin En ' Engineering Report
Owked
'Task Wastewater Flow Pro' coons
shw/ or -5—
Estimate of wastewater flows from Midland Business Park
Data Sources
Timesaver Standard page 1006
15 NCAC 2H .0219
.k, fidland Business Park Conceptual Land Use Plan
Corporate Office Development Tracts
Area 113.2 acres
Density 50 employees/acre
Wastewater generation 25 gpd/employee
Ultimate Wastewater Flow 141,500 gpd
Industrial Tracts
Assume 50% Warehouse & 50% General
Industry
Area
166.5
acres
Density - Warehouse
5
employees/acre
Density -General
25
employees/acre/shift
Number of Shifts
2
Showers - General
10%
Wastewater generation
Employees
25
gpd/employee
Showers
10
gpd/employee/shift
Ultimate Wastewater Flow 129,038 gpd
Small Lot Industrial Tracts
Area
Density
Wastewater generation
Ultimate Wastewater Flow
Total Ultimate Wastewater Flow
45.4 acres
20 employees/acre
15 gpd/employee
r
22,700 gpd

: .
.job N-. 00197-037-018 IN..
HDR
j Muddy Creek NPDES Apphcation com xA*d RDH IDeb 10/10/91
Zek
sot Preliminary ee ' Report C,,,W pift
Wastewater Flow Pro' 'ons st" of 5--
Historical Water Records for Major Water Users in Gallons/Month
Bethel Pepsi McCoy Mid -Knit Total
Year Month School Cola Oil Company
89 NOV
103,074
33,510
61328
142631
157,543
DEC
101,055
44,581
9,604
27,212
182,452
90 JAN
115,566
41,439
%866
152364
182,235
FEB
57,970
49,368
13,494
14,863
135,695
MAR
77,343
32,912
7,929
15,798
133,982
APR
70,462
18,700
5,999
15,521
110,682
MAY
60,663
54,006
7,802
18,640
1419111
JUN
92,378
26,105
5,603
21,610
145,696
JUL
311566
331810
52827
20,622
91,825
AUG
71405
41,215
4,997
16,755
70,372
SEP
14,436
49,144
5,932
341206
103,718
OC`r
86,843
257806
6,351
31,371
150,371
NOV
80,111
29,920
51064
26,517
141,612
DEC
86,170
25,881
6,149
29,509
147,709
91 JAN
79,587
32,762
6,141
31,715
150,205
FEB
69,938
20,495
4,765
24,250
119,448
MAR
71,958
21,318
5,139
30,862
129,277
APR
64,178
2%322
Z730
282820
125,050
MAY
61,112
18,176
Z094
30,862
112,244
JUN
86,244
24,160
1444
35,141
146,989
JUL
46,301
14,362
1,578
35,755
97,996
AUG
17,279
25,282
1,429
104,892
148,882
SEP
19,074
17,279
11518
25,469
63,340
OCT
97,988
23,936
11870
40,706
164,500
Total
1,598,701
733,489
129,653
691,091
3,152,934
Average
66,613
30,562
51402
28,795
131,372
Maximum
115,566
54,006
13,494
104,892
182,452
STD
29,557
101812
Z968
179561
30,079
AVG+STD 96,169 41,374 8,370 46,356 161,452
Row Wise Sum of AVG+STD (Rounded) 192,000

Job No. 00197-037-018 jNo.
13-11 no"k
ftied Muddy Creek NPDES Application cw,i.d RDH Deb 10/10/91
&A*a PreUminary Engineering Report ChakW Dab
Twit Wastewater Flow Pro' tions ghW 3 a 5--
Use 192,000 gallons per month as existing industrial flow
Assuming 21 working days per month gives 9,143 gpd industrial flow
Further assume that new industrial growth will go to Midland Business Park
Therefore, the only growth in this figure will be plant expansion of existing facilities
For lack of better information, assume that flows will double within 20 years
From Midland Business Park calculations, Ultimate industrial flow is
Use 20 year build out for midland industrial park
Total Industrial Flow from Midland Area
Flow in MGD
1990
2002
2012
Ultimate
Existing Industry 0.0091
0.0137
0.0183
0.0183
Midland Business Park 0.0000
0.1465
0.2930
0.2930
Total 0.0091
0.1602
0.3113
0.3113
293,000 gpd

Job No. 00187-037-qo �No.
HDR
Estimate of residential wastewater flows from Midland area
Muddy Creek Drainage Area Plus Industrial Park 7,200 Acres
Defined Sewer Service Area 3,500 Acres
1990, 2002, & 2012 Population Projections From County Planning Department
(Ultimate Figures based on 1 Dwelling Unit Per Acre Gross Density & 2.56 persons/household)
1990
2002
2012
Ultimate
Drainage Area 1,619
F
11943
2,331
18,432
Sewer Service Area 1,026
12231
11477
8,960
Residential Flow Projections in MGD, based on 70 gpcd
1990 2002 2012 Ultimate
Drainage Area 0.1133 0.1360 0.1632 1.2902
Sewer Service Area 0.0718 0.0862 0.1034 0.6272
Estimate of commercial wastewaetr flow from Midland area
Use 0.03 acres � commerical development r p per person
Use 500 gal/day/acre for commercial acerage
Commercial flow in MGD, based on population projections above
1990
2002
2012
Ultimate
0243
Drainage Area F01-.0154
0.0291
0.0350
0.2765
Sewer Service Area
0.0185
0.0222
0.1344
Total Residential and Commercial Flow From Midland Area
Flow in MGD
1990 2002 2012 Ultimate
Drainage Area 0.1376 0.1652 0.1981 1.5667
Sewer Service Area 0.0972 0.1046 0.1255 0.7616

Computation
Job No. 00197-037-018 N..
I - al] UO
ftled Muddy Creek NPDES Application
COMUWd RDH
or. 10/10/91
Preliminary Engineering Report
ChWkW
Dab
r k Wastewater Flow Projections
ShW
a
Calculation of Total Flow for Muddy Creek WWTP
Based on Previous Spreadsheets and 10 gpcd Infiltration/Inflow Allowance
Entire Muddy Creek Drainage Area
Flow in MGD
Residential Flow
Commercial Flow
Existing Industrial Flow
Midland Business Park
Infiltation/Inflow
Total
Immediate Sewer Service Area
Flow in MGD
Residential Flow
Commercial Flow
Existing Industrial Flow
Midland Business Park
Infiltration/Inflow
Total
1990 2002 2012 Ultimate
0.1133
0.1360
0.1632
1.2902
0.0243
0.0291
0.0350
0.2765
0.0091
0.0137
0.0183
0.0183
0.0000
0.1465
0.2930
0.2930
0.0162
0.0194
0.0233
0.1843
0.1629 0.3448 0.5327 2.0623
1990 2002 2012 Ultimate
0.0718
0.0862
0.1034
0.6272
0.0154
0.0185
0.0222
0.1344
0.0091
0.0137
0.0183
0.0183
0.0000
0.1465
0.2930
0.2930
0.0103
0.0123
0.0148
0.0896
0.1066 0.2772 0.4516 1.1625

Computation
Job No. 00197-037-018 INo. ---7
HDR
ftied Muddy Creek NPDES Application
com xmd RDH
Dab 11/04/91
sU*d Preliminary Engineering Report
Check d
om.
.Task Outfall Pipe Sizing
ShW
or z
Initially, consider designing outfall to flow full at ultimate basin development peak flow conditions.
Stream Slope
From Hwy 601 to Unnamed tnbutary east of Midland 0.345 ft/100ft
Unamde tnbutary east of Midland to Rocky River 0.189 ft/100ft
Determine Peak Flow
Use equation
PF = 4.75-1.25*log(10*Q)
Avg Flow 2.06
MGD
Peak Flo 6.40
MGD
Using Feild's Hydraulic Calculator
For s=
0.345 ft/100ft s=
0.189 ft/100ft
n=
0.013 n=
0.013
Q =
6.40 MGD Q =
6.40 MGD
Need D
21 inches Need D
24 inches
Next, consider 1/2 full design at peak 2012 flow conditions
Stream Slope
From Hwy 601 to Unnamed tnbutary east of Midland 0.345 ft/100ft
Unamde tributary east of Midland to Rocky River 0.189 ft/100ft
Determine Peak Flow
Use equation
Avg Flow
Peak Flow @ 1/2 full
PF = 4.75-1.25*log(10*Q)
0.54 MGD
2.07 MGD

Job No. 00197-037-018 1 No.
Computation
MWO
Proied Muddy Creek NPDES Application
c«Tp,ad RDH
Do. 11/04/91
subject Preliminary Engineering Report
a,.ok.d
Da%
raex 4utfall Pipe Sizing
ShW z
of 2_
Using Feild's Hydraulic Calculator
For s=
n=
Q=
Need D
0.345 ft/100ft s= 0.189 ft/100ft
0.013 n= 0.013
2.07 MGD Q = 2.07 MGD
18 inches Need D 21 inches
Use 18-inch Pipe from Hwy 61 to unnamed tributary east of Midland
Use 21-inch Pipe from unnamed tributary east of Midland to WWT?

Rocky @iv.r D.O. Model Calibration
Select "Summer"or"Winter"
summer
Cull
Cult
QTrib
Qact
QTrib
Actual
Reach Cum Tribs
x
di
Slope
Elevation
7010
7Q10
avg
Qavg
u
t
Cum t
No. (1)
-----
(miles)
(miles)
(fpe)
(MSL)
--------------------------------------------------------------------
(cfs)
(cfsl
(cfs)
(cfs)
(mi/day)
(days)
(days)
0
0.00
0.00
3.12
498
0.000
30.50 0.00 318.10
9.79
0.00
0.00
1
0.10
0.10
3.12
498
0.000
30.50
0.00
318.10
9,79
0.01
0.01
1
0.20
0.10
3.12
497
0.000
30.50
0.00
318.10
9.79
0.01
0.02
3
0.30
0.10
3.12
497
0.000
30,50
0.00
318.10
9.79
0.01
0.03
4 Coldwater
0.40
0.10
3,12
497
3.543
34.05
112.00
430.10
10.31
0.01
0.04
5
0.60
0.20
3.12
496
3.543
34,05
112.00
430.10
10.31
0.02
0.06
6
0.80
0.20
3.12
496
3.543
34.05
112.00
430.10
10.31
0.02
0.08
7
1.00
0.20
3.12
495
3.543
34.05
112.00
430.10
10.31
0.02
0.10
8
1.25
0.25
3.12
494
3.543
34.05
112.00
430.10
10.31
0.02
0.12
9
1.50
0.15
3.12
493
3.543
34.05
112.00
430.10
10.31
0.02
0.15
10
1.75
0.25
3.12
493
3.543
34.05
112.00
430.10
10.31
0.02
0.17
11
1.00
0.25
3.12
492
3.543
34.05
112.00
430.10
10.31
0.02
0.20
12 Hwy 601
2.10
0.10
2.96
491
3.543
34.05
111,00
430.10
10.31
0.01
0.21
13
2.50
0.40
2.96
490
3.543
34.05
112.00
430.10
10.31
0.04
0.24
14
2.75
0.25
2.96
490
3.543
34.05
112.00
430.10
10.31
0.02
0.27
15 Hamby Branch
3.00
0.25
2.96
489
3.543
34.05
112.00
430.10
10.31
0.02
0.29
16
3.25
0.25
2.96
488
3.543
34.05
112.00
430.10
10.31
0.02
0.32
17
3.50
0.25
2.96
487
3.543
34.05
112.00
430.10
10.31
0.02
0.34
18
3.75
0.25
2.96
487
3.543
34.05
112.00
430.10
10.31
0.02
0.37
19
4.00
0.25
2.96
486
3.543
34.05
112,00
430.10
10.31
0.02
0.39
20
4.25
0.25
2.96
485
3.543
34.05
112.00
430.10
10.31
0.02
0.41
21 SR 1006
4.55
0.30
2.96
484
3.543
34.05
112.00
430.10
10.31
0.03
0.44
22
4.75
0.20
2.96
484
3.543
34.05
112.00
430.10
10.31
0.02
0.46
23
5.00
0.25
2.96
483
3.543
34.05
112.00
430.10
10.31
0.02
0.49
24 Dutch Buffalo
5.35
0.35
2.96
482
7.267
37.77
206.00
524.10
10.82
0.03
0.52
25
5.50
0.15
2.96
481
7.267
37.77
206.00
524.10
10.82
0.01
0.53
26
6.00
0.50
2.96
480
7.267
37.77
206,00
524.10
10.82
0.05
0.58
27
6.50
0.50
2.96
478
7.267
37.77
206,00
524.10
10.82
0.05
0.63
28
7.00
0.50
2.96
477
7.267
37.77
206.00
524.10
10.82
0.05
0.67
29
7.50
0.50
2.96
475
7,267
37.77
206.00
524.10
10.82
0.05
0.72
30
8.00
0.50
2.96
474
7.267
37.77
206.00
524.10
10,82
0.05
0.76
31
8.50
0.50
2.96
473
7.267
37.77
206.00
524.10
10.82
0.05
0.81
32
9.00
0.50
2.96
471
7.267
37.77
206.00
524.10
10.82
0.05
0.86
33
9.50
0.50
2.96
470
7.267
37.77
206.00
524.10
10.82
0.05
0.90
34
10.00
0.50
2.96
468
7.267
37.77
206.00
524.10
10.82
0.05
0.95
35 Hwy 24-27
10.25
0.25
3.07
467
7.267
37.77
206,00
524.10
10,82
0.02
0.97
36
11,00
0.75
3.07
465
7,267
37.77
206.00
524.10
10.82
0.07
1.04
37
11.50
0.50
3.07
463
7.267
37.77
206.00
524.10
10.82
0.05
1.09
38
12.00
0.50
3.07
462
7.267
37.77
206.00
524.10
10.82
0.05
1.13
39
12.50
0.50
3.07
460
7.267
37.77
206.00
524.10
10.82
0.05
1.18
40
13.00
0.50
3.07
459
7.267
37.77
206,00
524.10
10.82
0.05
1.23
41 SR 1114
13.55
0.55
3.07
457
7.267
37.77
206,00
524.10
10.82
0.05
1.28
42
14.00
0.45
3.07
456
7.267
37.77
206.00
524.10
10.82
0.04
1.32
43
14.50
0.50
3.07
454
7.267
37.77
206.00
524.10
10.82
0.05
1.36
44 Muddy Creek WWTP
14.65
0.15
4.12
454
7.267
37.77
706,00
524.10
10.82
0.01
1.38
45
14.75
0.10
4.12
453
7.267
37.77
206,00
524.10
10.82
0.01
1.39
46
15.00
0.25
4.12
452
7.267
37.77
206,00
524.10
10.82
0.02
1.41
47
48
15.25
0.25
4.12
451
7.267
37.77
106.00
524.10
10.82
0.02
1.43
49
15.50
0.25
4.12
450
7.267
37.77
206,00
524.10
10.82
0.02
1.46
50
15.75
0.25
4.12
449
7,267
37.77
206,00
524.10
10.82
0.02
1.48
16.00
0.25
4.12
448
7.267
37.77
206,00
524.10
10.82
0.02
1.50
HDR Engineering, Inc. of Morth Carolina

Rocky Rver D.O. Model Calibration
Select "Sutter"or"Winter"
summer
Cute
Cull
QTrib
Qact
QTrib
Actual
Reach Cut ?ribs
a
da
Slope
Elevation
7010
7Q10
avq
Qavq
u
t
Cum t
No. (1)
(miles)
---------------------------------------------------------------------------------------------
(miles)
(fpe)
(MSL)
(cfs)
(cfs)
(cfs)
(cfs)
(eilday)
(days)
(days)
51
16.25
0.25
4.12
447
7.267
37.77
206.00
524.10
10.82
0.02
1.53
52
16.50
0.25
4.12
446
7.267
37.77
106.00
524.10
10.82
0.02
1.55
53 Goose Creek
16.90
0.40
8.80
445
10.084
40.59
269.00
587.10
11.19
0.04
1.58
54
17.00
0.10
8.80
444
10.084
40.59
269.00
587.10
11.19
0.01
1.59
55
17.50
0.50
8.80
439
10.084
40.59
269.00
587.10
11.19
0.04
1.64
56
18.00
0.50
6.28
435
10.084
40.59
269.00
587.10
11.19
0.04
1.68
57
18.50
0.50
6.28
432
10.084
40.59
269.00
587.10
11.19
0.04
1.73
58
19.00
0.50
6.28
429
10.084
40.59
269.00
587.10
11.19
0.04
1.77
59
19.50
0.50
8.12
425
10.084
40.59
269.00
587.10
11.19
0.04
1.82
60
20.00
0.50
8.12
421
10.084
40.59
269.00
587.10
11.19
0.04
1.86
61 Crooked Creek
20.70
0.70
13.54
416
12.723
43.23
328.00
646.10
11.53
0.06
1.92
62
21.00
0.30
13.54
412
12.723
43.22
328.00
646.10
11.53
0.03
1.95
63
22.00
1.00
13.54
398
12.723
43.23
328.00
646.10
11.53
0.09
2.04
64
23.00
1.00
13.54
385
12.723
43.23
328.00
646.10
11.53
0.09
2.12
65
24.00
1.00
13.54
371
12.723
43.23
328.00
646.10
11.53
0.09
2.21
66
25.00
1.00
7.49
357
12.723
43.23
328.00
646.10
11.53
0.09
2.30
67
26.00
1.00
7.49
350
12.723
43.23
328.00
646.10
11.53
0.09
2.38
68
27.00
1.00
7.49
342
12.723
43.23
328.00
646.10
11.53
0.09
2.47
69
28.00
1.00
7.49
335
12.723
43.23
328.00
646.10
11.53
0.09
2.56
70
29.00
1.00
7.49
328
12.723
43.23
328.00
646.10
11.53
0.09
2.64
71
30.00
1.00
7.49
320
12.723
43.23
328.00
646.10
11.53
0.09
2.73
72
31.00
1.00
7.49
313
12.723
43.23
328.00
646.10
11.53
0.09
2.82
73
32.00
1.00
7.49
305
12.723
43.23
328.00
646.10
11.53
0.09
2.90
74
33.00
1.00
7.49
298
12.723
43.23
328.00
646.10
11.53
0.09
2.99
75
34.00
1.00
7.49
290
12.723
43.23
328.00
646.10
11.53
0.09
3.08
76
35.00
1.00
7.49
283
12.723
43.23
328.00
646.10
11.53
0.09
3.16
77 Biq Bear/Oakboro
35.95
0.95
8.57
275
22.411
52.91
510.00
828.10
12.68
0.07
3.24
78
37.00
1.05
8.57
266
22.411
52.91
510.00
828.10
12.68
0.08
3.32
?9
38.00
1.00
8.57
258
22.411
52.91
510.00
828.10
12.68
0.08
3.40
80
39.00
1.00
8.57
249
22.411
52.91
510.00
828.10
12.68
0.08
3.48
81 Richardson Creek
40.15
1.15
2.16
239
29.567
60.07
670.00
988.10
13.46
0.09
3.56
82
41.00
0.85
2.16
238
29.567
60.07
670.00
988.10
13.46
0.06
3.63
83
42.00
1.00
2.16
235
29.567
60.07
670.00
988.10
13.46
0.07
3.70
84
43.00
1.00
2.16
233
29.567
60.07
670.00
988.10
13.46
0.07
3.78
85
44.00
1.00
2.16
231
29.567
60.07
670.00
988.10
13.16
0.07
3.85
86
45.00
1.00
2.16
229
29.567
60.07
670.00
988.10
13.46
0.07
3.92
87
50.00
5.00
2.16
218
29.567
60.07
670.00
988.10
13.46
0.37
4.30
S8
55.00
5.00
2.16
207
29.567
60.07
670.00
988.10
13.46
0.37
4.67
89
55.85
0.85
2.16
206
29.567
60.07
670.00
988.10
13.46
0.06
4.73
HDR Enqineerinq, Inc. of North Carolina

Rocky River D.O. Model Calibration
Select "Sunder"or"Winter"
V
H
Cal
Calibration
Calibration
Beach Cum Tribs
x
Cue t
Override
V
Override
H
n
Kd
Kn
Ka lowQ
No (1)
-----
(miles)
(days)
(fps)
(fps)
(ft)
(ft)
(/day)
(/day)
(/day)
(/day)
0
0.00
0.00
0.60
0.60
1.08
1.08
0.11
0.26
0.30
0.00
1
0.10
0.01
0.60
0.60
1.08
1.08
0.11
0.26
0.30
0.00
2
0.20
0.02
0.60
0.60
1.08
1.08
0.11
0.26
0.30
0.00
3
0.30
0.03
0.60
0.60
1.08
1.08
0.11
0.26
0.30
0.00
4 Coldwater
0.40
0.00
0.63
0.63
1.11
1.11
0.11
0.26
0.30
0.00
5
0.60
0.02
0.63
0.63
1.11
1.11
0.11
0.26
0.30
0.00
6
0.80
0.04
0.63
0.63
1.11
1.11
0.11
0.26
0.30
0.00
7
1.00
0.06
0.63
0.63
1.11
1.11
0.11
0.26
0.30
0.00
8
1.25
0.08
0.63
0.63
1.11
1.11
0.11
0,26
0.30
0.00
9
1.50
0.11
0.63
0.63
1.11
1.11
0.11
0.26
0.30
0.00
10
1.75
0.13
0.63
0.63
1.11
1.11
0.11
0.26
0.30
0.00
11
2.00
0.16
0.63
0.63
1.11
1.11
0.11
0.26
0.30
0.00
12 Hwy 601
2.10
0.16
0.63
0.63
1.11
1.11
0.11
0.26
0.30
0.00
13
2.50
0.20
0.63
0.63
1.11
1.11
0.11
0.26
0.30
0.00
14
2.75
0.23
0.63
0.63
1.11
1.11
0.11
0.26
0.30
0.00
15 Hamby Branch
3.00
0.25
0.63
0.63
1.11
1.11
0.11
0.26
0.3Q
0,00
16
3.25
0.28
0.63
0.63
1.11
1.11
0.11
0.26
0.30
0.00
17
3.50
0.30
0.63
0.63
1.11
1.11
0.11
0.26
0.30
0.00
18
3.75
0.33
0.63
0.63
1.11
1.11
0.11
0.26
0.30
0.00
19
4.00
0.35
0.63
0.63
1.11
1.11
0.11
0.26
0.30
0.00
20
4.25
0.37
0.63
0.63
1.11
1.11
0.11
0.26
0.30
0.00
21 SR 1006
4.55
0.40
0.63
0.63
1.11
1.11
0.11
0.26
0.30
0.00
22
4.75
0.42
0.63
0.63
1.11
1.11
0.11
0.26
0.30
0.00
23
5.00
0.45
0.63
0.63
1.11
1.11
0.11
0.26
0.30
0,00
24 Dutch Buffalo
5.35
0.00
0.66
0.66
1.14
1.14
0.11
0.26
0.30
0.00
25
5.50
0.01
0.66
0.66
1.14
-1.14
0.11
0.16
0.30
0.00
26
6.00
0.06
0.66
0.66
1.14
1.11
0.11
0.26
0.30
0.00
!7
6.50
0.11
0.66
0.66
1.14
1.14
0.11
0.26
0.30
0.00
28
7.00
0.15
0.66
0.66
1.14
1.14
0.11
0.26
0.30
0.00
29
7.50
0.20
0.66
0.66
1.14
1.14
0.11
0.26
0.30
0.00
30
8.00
0.24
0.66 -
0.66
1.14
1.14
0.11
0,26
0.30
0.00
31
8.50
0.29
0.66
0.66
1.14
1.14
0.11
0.26
0.30
0.00
32
9.00
0.34
0.66
0.66
1.14
1.14
0.11
0.26
0.30
0,00
33
9.50
0.38
0.66
0.66
1.14
1.14
0.11
0.26
0.30
0.00
34
10.00
0.43
0.66
0.66
1.14
1.14
0.11
0.26
0.30
0.00
35 Hwy 24-27
10.25
0.45
0.66
0.66
1.14
1.14
0.11
0.27
0.30
0.00
36
11,00
0.52
0.66
0.66
1.14
1.14
0.11
0.27
0.30
0,00
37
11,50
0.57
0.66
0.66
1.14
1.14
0.11
0.17
0.30
0.00
38
12.00
0.61
0.66
0.66
1.14
1.14
0.11
0.27
0.30
0.00
39
12.50
0.66
0.66
0.66
1.14
1.14
0.11
0.27
0.30
0.00
40
13.00
0.71
0.66
0.66
1,14
1.14
0.11
0.27
0.30
0.00
41 SR 1114
13.55
0.76
0.66
0.66
1.14
1.14
0.11
0.27
0.30
0.00
42
14.00
0.80
0.66
0.66
1.14
1.14
0.11
0.27
0.30
0.00
43
14.50
0.85
0.66
0.66
1.14
1.14
0.11
0.27
0.30
0.00
44 Muddy Creek WWTP
14.65
0.00
0.66
0.66
1.14
1.14
0.13
0.28
0.30
0.00
45
46
14.75
0.01
0.66
0.66
1.14
1.14
0.13
0.28
0,30
0.00
47
15.00
0.03
0.66
0.66
1.14
1.14
0.13
0.28
0.30
0.00
48
15.25
0.06
0.66
0.66
1.14
1.14
0.13
0.28
0.30
0.00
49
15.50
0.08
0.66
0.66
1.14
1.14
0.13
0.28
0.30
0.00
50
15.75
0.10
0.66
0.66
1.14
1.14
0.13
0.18
0.30
0.00
16,00
0.12
0.66
0.66
1.14
1.14
0.13
0.28
0.30
0.00
HDR Engineering, Inc. of North Carolina

Rocky &fiver D.O. Kodel Calibration
Select "Summer"or"Winter"
y
H
Cal
Calibration
Calibration
Beach Cue cribs
a
Cue t
Override
V
Override
H
n
Kd
Kn
Ka IoKQ
---No. (1)
(miles)
(days)
(fps)
-----------------------------------------
(fps)
(ft)
(ft)
(/day)
(/daY)
(/day)
(/daY)
51
52
16.25
0.15
0.66
0.66
1.14
1.14
----------------------------
0,13
0.28
0.30
0.00
53 Goose Creek
16,50
16.90
0.17
0.00
0.66
0.68
0.66
0.68
1.14
1.16
1.14
1.16
0.13
0.28
0.30
0.00
54
17.00
0.01
0.68
0.68
1.16
1.16
0.21
0.21
0.33
0.33
0.30
0.30
0.00
0.00
55
56
17.50
0.05
0.68
0.68
1.16
1.16
0.21
0.33
0.30
0.00
18.00
0.10
0.68
0.68
1.16
1.16
0.17
0.30
0.30
0.00
57
58
18.50
0.14
0.68
0.68
1.16
1.16
0,17
0,30
0.30
0.00
19.00
0.19
0.68
0.68
1.16
1.16
0.17
0.30
0.30
0.00
59
60
19.50
0.23
0.68
0.68
1.16
1.16
0.20
0.32
0.30
0.00
61 Crooked Creek
20.00
20.70
0.28
0.00
0.68
0.70
0.68
0.70
1.16
1.18
1.16
1.18
0.20
0.32
0.30
0.00
62
11.00
0.03
0.70
0.70
1.18
1.18
0.27
0.27
0.36
0.36
0.30
0.30
0.00
0.00
63
22.00
0.11
0.70
0.70
1.18
1.18
0.27
0.36
0.30
0.00
64
65
23.00
0.20
0.70
0.70
1.18
1.18
0.27
0,36
0.30
0.00
66
24.00
0.29
0.70
0.70
1.18
1.18
0.27
0.36
0.30
0.00
67
25.00
0.37
0.70
0.70
1.18
1.18
0.19
0.32
0.30
0.00
68
16.00
0.46
0.70
0.70
1.18
1.18
0.19
0,32
0.30
0.00
69
27.00
0.55
0.70
0.70
1.18
1.18
0.19
0.32
0.30
0.00
70
28.00
0.63
0.70
0.70
1.18
1.18
0.19
0.32
0.30
0.00
71
29.00
0.72
0.70
0.70
1.18
1.18
0.19
0.32
0.30
0.00
72
30.00
0.81
0.70
0.70
1.18
1.18
0.19
0.32
0.30
0,00
73
31.00
0.89
0.70
0.70
1.18
1.18
0.19
0.32
0.30
0.00
74
32.00
0.98
0.70
0.70
1.18
1.18
0.19
0.32
0.30
0.00
75
33.00
1.07
0.70
0.70
1.18
1.18
0.19
0.32
0.30
0.00
76
34.00
1.15
0.70
0.70
1.18
1.18
0.19
0.32
0.30
0.00
77 Big Bear/Oakboro
35.00
35.95
1.24
0.00
0.70
0.77
0.70
0.77
1.18
1.24
1.18
0.19
0.32
0.30
0.00
78
37.00
0.08
0.77
0.77
1.24
1.24
1.24
0.21
0.21
0.33
0.33
0.30
0.30
0.00
0.00
79
80
38.00
0.16
0.77
0.77
1.24
1.24
0.21
0.33
0.30
0.00
81 Richardson Creek
39.00
40.15
0.24
0.00
0.77
0.82
0.77
0.82
1.24
1.28
1.24
1.28
0.21
0.09
0.33
0.30
0.00
82
41.00
0.06
0.82
0.82
1.28
1.28
0.09
0.26
0.26
0.30
0.30
0.00
0.00
83
84
42.00
0.14
0.82
0.82
1.28
1.28
0.09
0.26
0.30
0.00
85
43.00
0.21
0.82
0.82
1.28
1.28
0.09
0.26
0.30
0.00
86
44.00
0.29
0.82
0.82
1.28
1.28
0.09
0,26
0.30
0.00
87
45.00
0.36
0.82
0.82
1.28
1.28
0.09
0.26
0.30
0,00
88
50.00
0.73
0.82
0.82
1.28
1.28
0.09
0.26
0.30
0.00
89
55.00
1.10
0.82
0.82
1.28
1.28
0.09
0.26
0.30
0.00
55.85
1.17
0.82
0.82
1.28
1.28
0.09
0.26
0.30
0.00
HDR Engineering, Inc, of North Carolina

Bock? Eiver D.O. Model Calibration
Select "Summer"or"Winter"
Ed(Tc)
Ea(TC)
Calibration
Calibration
Beach Cum Tribs
a
Ka midQ
Ka bighQ
Override
Ed(T)
Kn(T)
Override
Ka(T)
Dai
Daa
---No. (1)
(miles)
(/day)
(/day)
(/day)
(/day)
(/day)
(/day)
(/day)
(19/1)
(m9/1)
0
0.00
0.00
1.64
0-18-----O-3Z---------3-00-----3-00-----1-�8-----I-�B-
1
0.10
0.00
1.61
0.28
0.32
3.00
3.00
1.58
1.54
2
0.20
0..00
1.64
0.28
0.32
3.00
3.00
1.58
1.49
3
0.30
0.00
1.64
0.28
0.32
3.00
3.00
1.58
1.44
4 Coldwater
0.40
0.00
1.73
0.28
0.32
3.00
3.00
1.54
1.54
5
0.60
0.00
1.73
0.28
0.32
3.00
3.00
1.54
1.45
6
0.80
0.00
1.73
0.28
0.32
3.00
3.00
1.54
1.37
7
1.00
0.00
1.73
0.28
0.32
3.00
3.00
1,54
1.29
8
1.25
0.00
1.73
0.28
0.32
3.00
3.00
1.54
1.20
9
1.50
0.00
1.73
0.28
0.32
3.00
3.00
1.54
1.12
10
1.75
0.00
1.73
0.28
0.32
3.00
3.00
1.54
1.04
11
2.00
0.00
1.73
0.28
0.32
3.00
3.00
1.54
0.97
12 Hwy 601
2.10
0.00
1.64
0.28
0.32
3.00
3.00
1.54
0.94
13
2.50
0.00
1.64
0.28
0.32
3.00
3.00
1.54
0.84
14
2.75
0.00
1.64
0.28
0.32
3.00
3.00
1.54
0.78
15 Hamby Branch
3.00
0.00
1.64
0.28
0.32
3.00
3.00
1.54
0.72
16
3.15
0.00
1.64
0.28
0.32
3.00
3.00
1.54
0.67
17
3.50
0.00
1.64
0.28
0.32
3.00
3.00
1.51
0.63
18
3.75
0.00
1.64
0.28
0.32
3.00
3.00
1.54
0,58
19
4.00
0.00
1.64
0.28
0.32
4.00
4.00
1.54
0.38
20
1.25
0.00
1.64
0.28
0.32
4.00
4.00
1.54
0.35
21 SR 1006
4.55
0.00
1.64
0.28
0.32
4.00
4.00
1.54
0.31
22
4.75
0.00
1.64
0.28
0.32
6.00
6.00
1.51
0.12
23
5.00
0.00
1.64
0.28
0.32
6.00
6.00
1.54
0.11
24 Dutch Buffalo
5.35
0.00
1.72
0.28
0.32
6.00
6.00
0.89
0.89
25
5.50
0.00
1.72
0.28
0.32
6.00
6.00
0.89
0.82
26
6.00
0.00
1.72
0.28
0.32
6.00
6.00
0.89
0.62
27
6.50
0.00
1.72
0.28
0.32
6.00
6.00
0.89
0.47
28
7.00
0.00
1.72
0.28
0.32
6.00
6.00
0.89
0.36
29
7.50
0.00
1.72
0.28
0.32
6.00
6.00
0.89
0.27
30
8.00
0.00
1.72
0.28
0.32
6.00
6.00
0.89
0.21
31
8.50
0.00
1.72
0.28
0.32
6.00
6.00
0.89
0.16
32
9.00
0.00
1.72
0.28
0.32
6.00
6.00
0.89
0.12
33
9.50
0.00
1.72
0.28
0.32
6.00
6.00
0.89
0.09
34
10.00
0.00
1.72
0.28
0.32
6.24
6.74
0.89
0.06
35 Hwy 24-27
10.25
0.00
1.79
0.28
0.32
6.24
6.24
0.89
0,05
36
11.00
0.00
1.79
0.28
0.32
6.21
6.21
0.89
0.03
37
38
11.50
0.00
1.79
0.28
0.32
6.24
6.24
0.89
0.03
39
12.00
0.00
1.79
0.28
0.32
6.24
6.21
0.89
0.02
40
12.50
0.00
1.79
0.28
0.32
6.24
6.24
0.89
0.01
13.00
0.00
1.79
0.28
0.32
6.24
6.24
0.89
0,01
41 SR 1114
13.55
0.00
1.79
0.28
0.32
6.24
6.21
0.89
0.01
42
14.00
0.00
1.79
0.28
0.32
6.24
6.24
0.89
0.01
43
14.50
0.00
1.79
0.28
0.32
6.24
6.21
0.89
0.00
44 Muddy Creek WWTP
14.65
0.00
2.40
0.29
0.32
6.24
6.24
0.61
0.61
45
46
14.75
0.00
2.40
0.29
0.32
6.24
6.24
0.61
0.57
41
15.00
0.00
2.40
0.29
0.32
6.24
6.21
0.61
0,50
48
15.25
0.00
2.40
0.29
0.32
6.24
6.24
0.61
0.43
49
15.50
0.00
2.40
0.29
0.32
6.24
6.21
0.61
0.37
50
15.75
0.00
2.10
0.29
0.32
6.24
6.24
0,61
0.32
16.00
0.00
2.40
0.29
0.32
6.24
6.24
0.61
0.28
HDB Engineerinq, Inc. of North Carolina

Rocky Giver D.O. Model Calibration
Select "Sutter"or"hinter"
Kd(Tc)
Ka(Tc)
Calibration
Calibration
Beach Cut Tribs
a
Ka tidQ
Ka high0
Override
Kd(T)
Kn(T)
Override
Ka(T)
Dai
Daa
---No. (t)
(tiles)
(IdaY)
(IdaY)
(IdaY)
---------0-29-----a-3�---------6-�4-----6-24-----0-61-----o-Z4-
(ldaq)
(/day)
(/daY)
(IdaY)
(oq/1)
(tgll)
51
52
16.25
0.00
1.40
53 Goose Creek
16.50
16.90
0.00
0,00
2.40
5.30
0.29
0.34
0.32
0.32
6.24
6.24
0.61
0.21
54
17.00
0.00
5.30
0.34
0.32
6.25
6.25
6.25
6.25
0.61
0.61
0.61
0.58
55
17.50
0.00
5.30
0.34
0.32
6.25
6.25
0.61
0.44
56
18.00
0.00
3.78
0.32
0.32
6.25
6.25
0,61
0.33
57
58
18.50
0.00
3.78
0.32
0.32
6.25
6.25
0.61
0.25
19.00
0.00
3.78
0.32
0.32
6.25
6.25
0.61
0.19
59
60
19.50
0.00
4.89
0.33
0.32
6.25
6.25
0.61
0.14
20.00
0.00
4.89
0.33
0.32
6.25
6.25
0.61
0.11
61 Crooked Creek
20,70
0.00
8.40
0.38
0.32
6.27
6.27
0.60
0.60
62
21.00
0.00
8.40
0.38
0.32
6.27
6.27
0.60
0.51
63
22.00
0.00
8.40
0.38
0.32
6.27
6.27
0.60
0.30
64
23.00
0.00
8.40
0.38
0.32
6.27
6.27
0,60
0.17
65
24.00
0.00
8.40
0.38
0.32
6.27
6.27
0.60
0.10
66
67
25.00
0.00
4.64
0.33
0.32
6.27
6,27
0.60
0.06
68
26.00
0.00
4.64
0.33
0.32
6.27
6.27
0.60
0.03
69
27.00
0.00
4.64
0.33
0.32
6.27
6.27
0.60
0.02
70
28.00
0.00
4.64
0.33
0.32
6.27
6.17
0,60
0.01
71
29.00
0.00
4.64
0.33
0.32
6.27
6.27
0.60
0.01
72
30.00
0.00
4.64
0.33
0.32
6.27
6.27
0.60
0.00
73
31.00
0.00
4.64
0.33
0.32
6.27
6.27
0.60
0.00
74
32.00
0.00
4.64
0.33
0.32
6.27
6.17
0.60
0.00
75
33.00
0.00
4.64
0.33
0.32
6.27
6,27
0.60
0.00
76
34.00
0.00
4.64
0.33
0.32
6.27
6.27
0.60
0.00
77 Biq BearlOakboro
35.00
35.95
0.00
0.00
4.64
5.84
0.33
0.35
0.31
0.32
6.27
6.32
6.27
0.60
0.00
78
37.00
0.00
5.84
0.35
0.32
6.32
6.32
6.32
0.52
0,52
0.52
0.31
79
80
38.00
0.00
5.84
0.35
0.32
6.32
6.32
0.52
0.19
81 Richardson Creek
39.00
40,15
0.00
0.00
5.84
1.56
0.35
0.32
6.32
6.32
0.52
0.11
82
41.00
0.00
1.56
0,27
0.27
0.32
0.32
6.35
6.35
6.35
6.35
0.49
0.49
0.49
0.33
83
84
41.00
0.00
1.56
0.17
0.32
6.35
6.35
0,49
0.20
85
43.00
0.00
1.56
0.27
0.32
6.35
6.35
0.49
0.13
86
44.00
0.00
1.56
0.27
0.32
6.35
6.35
0,49
0.08
87
45.00
0.00
1.56
0.27
0.32
6.35
6.35
0.49
0.05
88
50.00
0.00
1.56
0.27
0.32
6.35
6.35
0.49
0.00
89
55.00
0.00
1.56
0.27
0.32
6.35
6.35
0.49
0.00
55.85
0.00
1.56
0.27
0.32
6.35
6.35
0.49
0.00
HOR Engineering, Inc. of North Carolina

Rocks Eiver D.O. Model Calibration
Select "Sumter"or"Winter"
Conside
Reach Cut Tribs
E
CBODi
CBODa
Dca
XBODi
XBODI
Dna
Cue Da
Sat DO
DOa
Dsa
---No---- (1)
(tiles)
(igl1)
(t9/1)
(Q911J
------------------------------------------
(tg/1)
(t9/1J
(o9/1J
(d9/1J
It9/1J
(e9/1)
(t9/1J
0
1
0.00
20.84
20.84
0.00
1.47
1.47
0.00
1.58
---------------------------
8.11
6.53
0.00
2
0.10
20.84
20.78
0.06
1.47
1.47
0.00
1.60
8.11
6.51
0.03
3
0.20
20.84
20.73
0.11
1.47
1,47
0.01
1.61
8.11
6.50
0.05
4 Coldwater
0.30
0.40
20.84
18.73
20.67
18.73
0.17
0.00
1.47
1.41
1.46
1.41
0.01
0.00
1.63
8.11
6.49
0.08
5
6
0.60
18.73
18.63
0.10
1.41
1.40
0.01
1.54
1.56
8.11
8.11
6.57
6.55
0.00
0.05
7
0.80
18.73
18.53
0.19
1.41
1.39
0.02
1.58
8.11
6.54
0.10
8
1.00
18.73
18.43
0.27
1.41
1.39
0.02
1.59
8.11
6.52
0.14
9
1.25
18.73
18.30
0.37
1.41
1.38
0.03
1.61
8.11
6.50
0.19
10
1.50
18.73
18.18
0.47
1.41
1.36
0.04
1.63
8.11
6.49
0.24
1.75
18.73
18.06
0.55
1.41
1.35
0.05
1.64
8.11
6.47
0,29
11
12 Hwy 601
2.00
2.10
18.73
18.73
17.94
17.89
0.63
0.65
1.41
1.34
0.06
1.65
8.11
6.46
0.33
13
14
2.50
18.73
17.70
0.76
1.41
1.41
1.34
1.32
0.06
0.07
1.65
1.67
8.11
8.11
6.46
6.45
0.35
0.41
2.75
18.73
17.59
0.82
1.41
1.31
0.07
1.67
8.11
6.44
0.44
15 Hanby Branch
16
3.00
18.73
17.47
0.88
1.41
1.30
0.08
1.68
8.11
6.44
0.47
17
3.25
18.73
17.35
0.93
1.41
1.29
0.08
1.68
8.11
6.43
0.50
18
3.50
18.73
17.21
0.97
1.41
1.28
0.09
1.68
8.11
6.43
0.53
19
3.75
18.73
17.12
1.02
1.41
1.27
0.09
1.69
8.11
6.43
0.55
20
4.00
18.73
17.01
0.91
1.41
1.26
0.08
1.38
8.11
6.74
0.50
21 SR 1006
4.25
4.55
18.73
18.73
16.90
16.76
0.94
0.96
1.41
1.25
0.08
1.37
8.11
6.75
0.52
22
4.75
18.73
16.67
0.73
1.41
1.41
1.21
1.23
0.08
0.06
1.35
0.92
8.11
8.11
6.76
7.20
0.53
23
24 Dutch Buffalo
5.00
5.35
18.73
15.13
16.56
15.13
0.73
0.00
1.41
1,22
0.06
0.90
8.11
7.21
0.41
0.41
15
5.50
15,13
15.07
0.06
1.20
1.20
1.20
1.19
0.00
0.01
0.89
0.88
8.11
8.11
7,1Z
7.23
0.00
26
11
6.00
15.13
14.88
0.21
1.20
1.18
0.02
0.85
8.11
7.26
0,03
0.13
28
6.50
15.13
14.69
0.32
1.20
1.16
0.03
0.83
8.11
7.29
0.20
29
7.00
15.13
14.50
0.41
1.20
1.14
0.04
0.80
8.11
7.31
0.26
30
7.50
15.13
14.32
0.47
1.20
1.13
0.04
0.79
8.11
7.33
0.30
31
8.00
15.13
14.14
0.51
1.20
1.11
0.05
0.77
8.11
7.34
0.33
32
8.50
15.13
13.96
0.55
1.20
1.09
0.05
0.75
8.11
7.36
0.36
33
9.00
15.13
13.78
0.57
1.20
1.08
0.05
0.74
8.11
7.37
0.37
34
9.50
15.13
13.60
0.58
1.20
1.06
0.05
0.73
8.11
7.39
0.39
35 Hwy 24-27
10.00
10.25
15.13
15.13
13.43
13.34
0.58
0.58
1.20
1.20
1.04
0.05
0.69
8.11
7.42
0.39
36
11.00
15.13
13.08
0.58
1.20
1.04
1.01
0.05
0.05
0.69
0.67
8.11
8.11
7.43
7.44
0.39
37
38
11.50
15.13
12.92
0.58
1.20
1.00
0.05
0.66
8.11
7.45
0.40
0.40
39
12.00
15.13
12.75
0.58
1.20
0.98
0.05
0.65
8.11
7.46
0.41
40
12.50
15.13
12.59
0.58
1.20
0.97
0.05
0.64
8.11
7.47
0.41
41 SR 1114
13.00
13.55
15.13
15.13
12.43
12.25
0.57
0.57
1.20
0.95
0.05
0.63
8.11
7.48
0.41
42
14.00
15.13
12.11
0.56
1.20
1.20
0.94
0.93
0.05
0.05
0.61
0.62
8.11
8.11
7.49
7.50
0.11
43
44 Muddy Creek WWTP
14.50
14.65
15.13
11.96
11.96
11.96
0.55
0.00
1.20
0.91
0.05
0.61
8.11
7.50
0.41
0.41
45
14.75
11.96
11.93
0.03
0.91
0.91
0.91
0.91
0.00
0.00
0.61
0.61
8.11
8.11
7.50
7.50
0.00
46
47
15.00
11.96
11.85
0.10
0.91
0.90
0.01
0.61
8.11
7.51
0.02
0.08
48
15.25
11.96
11.77
0.16
0.91
0.90
0.01
0.61
8.11
7.51
0.12
49
15.50
11.96
11.69
0.21
0.91
0.89
0.02
0.60
8.11
7.51
0.16
50
15.75
11.96
11.61
0.26
0.91
0.88
0.02
0.60
8.11
7.51
0.19
16.00
11.96
11.53
0.30
0.91
0.88
0.03
0.60
8.11
7.51
0.22
HDR Engineering, Inc. of Xorth Carolina

Rocky River D.O. Model Calibration
Select "Summer"or"Winter"
Conside
Reach Cum (ribs
a
CBODi
CBODa
Dca
NBOD1
NBODa
Dna
Cum Da
Sat DO
DOa
Dsa
No. (1)
----
(miles)
--------------------------------------------------------------------------------------------------
(mg/1)
(ogli)
(eg/1)
fm9/1)
(e9ili
fog/1)
(e9111
fmg/1)
fe9/1)
fe9/11
51
16.25
11.96
11.15
0.33
0.91
0.87
0.03
0.60
8.11
7.52
0.25
52
16.50
11.96
11.38
0.36
0.91
0.86
0.03
0.60
8.11
7.52
0.27
53 Goose Creek
16.90
10.73
10.73
0.00
0.87
0.87
0.00
0.61
8.11
7.50
0.00
54
17.00
10.73
10.69
0.03
0.87
0.87
0.00
0.61
8.11
7.50
0.02
55
17.50
10.73
10.53
0.16
0.87
0.86
0.01
0.61
8.11
7.50
0.12
56
18.00
10.73
10.40
0.24
0.87
0.85
0.02
0.60
8.11
7.52
0.19
57
18.50
10.73
10.25
0.31
0.87
0.83
0.03
0.59
8.11
7.52
0.24
58
19.00
10.73
10.11
0.36
0.87
0.82
0.03
0.58
8.11
7.53
0.28
59
19.50
10.73
9.92
0.42
0.87
0.81
0.03
0.59
8.11
7.52
0.31
60
20.00
10.73
9.78
0.44
0.87
0.80
0.04
0.59
8.11
7.53
0.33
61 Crooked Creek
20.70
9.30
9.30
0.00
0.81
0.81
0.00
0.60
8.11
7.51
0.00
62
21.00
9.30
9.21
0.08
0.81
0.80
0.01
0.60
8.11
7.51
0.06
63
22.00
9.30
8.91
0.28
0.81
0.78
0.02
0.60
8.11
7.52
0.20
64
23.00
9.30
8.62
0.39
0.81
0.76
0.03
0.59
8.11
7.53
0.28
65
24.00
9.30
8.34
0.44
0.81
0.74
0.03
0.57
8.11
7.54
0.33
66
25.00
9.30
8.23
0.41
0.81
0.72
0.03
0.50
8.11
7.61
0.36
67
26.00
9.30
7.99
0.42
0.81
0.70
0.04
0.48
8.11
7.63
0.38
68
27.00
9.30
7.77
0.41
0.81
0.68
0.04
0.47
8.11
7.64
0.39
69
28.00
9.30
7.55
0.41
0.81
0.66
0.04
0.46
8.11
7.66
0.39
70
29.00
9.30
7.34
0.40
0.81
0.64
0.03
0.44
8.11
7.67
0.39
71
30.00
9.30
7.13
0.39
0.81
0.62
0.03
0.13
8.11
7.68
0.40
72
31.00
9.30
6.93
0.38
0.81
0.61
0.03
0.42
8.11
7.69
0.40
73
32.00
9.30
6.73
0.37
0.81
0.59
0.03
0.41
8.11
7.71
0.40
74
33.00
9.30
6.54
0.36
0.81
0.57
0.03
0.39
8.11
7.72
0.40
15
34.00
9.30
6.36
0.35
0.81
0.56
0.03
0.38
8.11
7.73
0.40
76
35.00
9.30
6.18
0.34
0.81
0.54
0.03
0.37
8.11
7.74
0.40
77 Big BearlOakboro
35.95
7.11
7.11
0.00
1.12
1.12
0.00
0.52
8.11
7.59
0.00
78
37.00
7.11
6.91
0.16
1.12
1.09
0.02
0.49
8.11
7.63
0.15
79
38.00
7.11
6.72
0.24
1.12
1.07
0.01
0.16
8.11
7.65
0.24
80
39.00
7.11
6.54
0.29
1.12
1.04
0.01
0.45
8.11
7.67
0.29
81 Richardson Creek
40.15
6.00
6.00
0..00
1.03
1.03
0.00
0.49
8.11
7.62
0.00
82
41.00
6.00
5.90
0.08
1.03
1.01
0.02
0.43
8.11
7.68
0.12
83
42.00
6.00
5.78
0.15
1.03
0.99
0.03
0.38
8.11
7.73
0.21
84
43.00
6.00
5.67
0.18
1.03
0.97
0.04
0.35
8.11
7.76
0.27
85
44.00
6.00
5.55
0.20
1.03
0.94
0.01
0.33
8.11
7.79
0.30
86
45.00
6.00
5.44
0.22
1.03
0.92
0.04
0.31
8.11
7.80
0.33
87
50.00
6.00
4.92
0.22
1.03
0.82
0.04
0.27
8.11
7.85
0.36
88
55.00
6.00
4.45
0.20
1.03
0.72
0.04
0.24
8.11
7.88
0.36
89
55.85
6.00
4.37
0.19
1.03
0.71
0.04
0.23
8.11
7.88
0.36
BDR Engineering, Inc. of North Carolina

Rock] River D,O, Model Calibration
Select "Summer"or"Winter"
ring SOD
---------
Permit
CalibrationCalibration
Reach Cum Tribs
a
DOa
Limit
DO
CBOD
No. (1)
---------------------------------------------------------
(miles)
(mg/1)
(mg/l)
(egll)
(mg/1)
0
0.00
6.53
5,00
1
0.10
6.49
5.00
2
0.20
6.45
5.00
3
0.30
6.41
5.00
4 Coldwater
0.40
6.57
5.00
5
0.60
6.50
5.00
6
0.80
6.44
5.00
7
1.00
6.38
5.00
B
1.25
6.31
5.00
9
1.50
6,24
5.00
10
1.75
6.18
5.00
11
2.00
6.13
5.00
12 Hwy 601
2.10
6.12
5,00
6.13
22.28
13
2.50
6.04
5.00
14
2.75
6.00
5.00
15 Hamby Branch
3.00
5.97
5.00
6.03
17.10
16
3.25
5.93
5.00
17
3.50
5.90
5.00
18
3.75
5.87
5.00
19
1.00
6.24
5.00
20
4.25
6.23
5.00
21 SR 1006
1.55
6.23
5.00
6.57
18.48
22
4.75
6.79
5.00
23
5.00
6.80
5.00
14 Dutch Buffalo
5.35
7.22
5.00
25
5.50
7.19
5.00
26
6.00
7.13
5.00
27
6.50
7.08
5.00
28
7.00
7.05
5.00
29
7.50
7.03
5.00
30
8.00
7.01
5.00
31
8.50
7.00
5.00
32
9.00
7.00
5.00
33
9.50
7.00
5.00
34
10.00
7.04
5.00
35 Hwy 24-27
10.25
7.04
5.00
6.83
10.56
36
11,00
7.01
5.00
37
11.50
7.05
5.00
38
11.00
7.06
5,00
39
12.50
7.06
5.00
40
13.00
7.07
5.00
41 SR 1114
13.55
7.08
5.00
8.15
42
14.00
7.08
5.00
43
14.50
7,09
5.00
44 Muddy Creek WWTP
14.65
7.50
5.00
45
14.75
7,48
5.00
46
15.00
7.43
5.00
47
15.25
7.39
5.00
48
15.50
7.35
5.00
49
15.75
7,32
5.00
50
16.00
7.29
5.00
H➢R Rngineering, Inc, of North Carolina

Rocky River D.O. Kodel Calibration
Select "Summer"or"Winter" ring SOD
--------- Permit CalibrationCalibration
Reach Cum cribs a DOa Limit DO CBOD
No. (8) (miles) (mg/1) (mgll) (mg/l) (mg/1)
-----------------------------------------------------------------------
51 16.25 7.27 5.00
52 16.50 7.25 5.00
53 Goose Creek 16.90 7.50 5.00
54 17.00 7.48 5.00
55 17.50 7.38 5.00
56 18.00 7.33 5.00
57 18.50 7.28 5.00
58 19.00 7.25 5.00
S9 19.50 7.21 5.00
60 20.00 7.19 5.00
61 Crooked Creek 20.70 7.51 5.00
62 21.00 7.45 5.00
63 22.00 7.31 5.00
64 23.00 7.24 5.00
65 21.00 7.21 5.00
66 25.00 7.25 5.00
67 26.00 7.25 5.00
68 27.00 7.26 5.00
69 28.00 7.27 5.00
70 29.00 7.28 5.00
71 30.00 7.29 5.00
72 31.00 7.30 5.00
73 32.00 7.31 5.00
74 33.00 7.32 5.00
75 34.00 7.33 5.00
76 35.00 7.34 5.00
77 Big Hear/Oakboro 35.95 7.59 5.00
78 37.00 7.47 5.00
79 38.00 7.41 5.00
80 39.00 7.37 5.00
81 Richardson Creek 40.15 7.62 5.00
82 41.00 7.56 5.00
83 42.00 7.52 5.00
84 43.00 7.50 5.00
85 44.00 7.48 5.00
86 45.00 7.48 5.00
87 50.00 7.49 5.00
88 55.00 7.51 5.00
89 55.85 7.52 5.00

:^reposed Allocations w( Ruddy Creek WWTP
Select "Summer"or"Winter"
summer
Cumm
Cumm
QTrib
Qact
QTrib
Actual
Reach Cum Tribs
a
da
Slope
Elevation
7Q10
7Q10
avg
Qavg
u
t
Cum t
No (1)
(miles)
(miles)
(fpm)
(KSL)
cfs
( 1
cfs
( J
cfs
( )
(cfs)
(ai/day)
(days)
(days)
0
0.00
0.00
3.12
498
0,000
-----------------------------------------------------
51.14
0.00 337.14
12.48
0.00
0.00
1
0.10
0.10
3.12
498
0.000
51.14
0.00
337.14
12.48
0.01
0,01
2
0.20
0.10
3.12
497
0.000
51.14
0.00
337.14
12.48
0.01
0,02
3
0.30
0.10
3.12
497
0.000
51.11
0.00
337.14
11.48
0.01
0.02
4 Coldwater
0.40
0.10
3.12
497
4,000
55.14
112.00
449.14
12.93
0.01
0.03
5
0.60
0.20
3.12
496
4.000
55,14
112.00
449.14
12.93
0.02
0.05
6
0.80
0.20
3.12
496
4.000
55.14
112.00
449.14
12.93
0.02
0,06
7
1.00
0.20
3.12
495
4.000
55.14
112.00
449.14
11,93
0.02
0.08
8
1.25
0.25
3.12
494
4.000
55.14
112.00
449.14
12,93
0.02
0.10
9
1.50
0.25
3.12
493
4.000
55.11
112.00
449.14
12,93
0.02
0.12
10
1.75
0.25
3.12
493
4.000
55.14
112.00
449.14
12.93
0.02
0.14
11
2.00
0.25
3.12
492
4.000
55.14
112.00
449.14
12.93
0.02
0.16
12 Hwy 601
2.10
0.10
2.96
491
4.000
55.14
112.00
449.14
12.93
0.01
0.16
13
2.50
0.40
2.96
490
4.000
55.14
112.00
449.14
12.93
0.03
0.19
14
2.75
0.25
2.96
490
4.000
55.14
112.00
449.14
12.93
0.02
0.21
15 Hamby Branch
3.00
0.25
2.96
489
4.000
55.14
112.00
449.14
12.93
0.02
0.23
16
3.25
0.25
2.96
188
4.000
55.14
112.00
449.14
12.93
0.02
0.25
17
3.50
0.25
2.96
487
4.000
55.14
112.00
449.14
12.93
0.02
0.27
18
3.75
0.25
2.96
487
4,000
55.14
112.00
449.14
12.93
0.02
0.29
19
4,00
0.25
2.96
486
4.000
55.14
112.00
449.14
12.93
0.02
0.31
20
1.25
0.25
2.96
485
4.000
55.14
112.00
449.14
12.93
0.02
0.33
21 SE 1006
4.55
0.30
2.96
484
4.000
55.14
112.00
449.14
12.93
0.02
0.35
22
4.75
0.20
2.96
484
4,000
55.14
112.00
449.14
12.93
0,02
0.37
23
5.00
0.25
2.96
483
4.000
55,14
112.00
449.14
12.93
0.02
0.39
24 Dutch Buffalo
5.35
0.35
2.96
482
8,204
59.34
206.00
543.14
13.38
0.03
0.11
25
5.50
0.15
2.96
481
8.204
59.34
206.00
543.14
13.38
0.01
0.42
26
6.00
0.50
2.96
480
8.204
59.34
206.00
543.14
13.38
0.04
0.46
27
6.50
0.50
2.96
478
8.204
59.31
206.00
543.14
13.38
0.01
0.50
28
7.00
0.50
2.96
477
8.204
59.34
206.00
543.14
13.38
0.04
0.51
29
7.50
0.50
2.96
475
8.204
59.34
206.00
543.14
13.38
0.01
0.57
30
8;00
0.50
2.96
474
8.204
59.34
206.00
543.14
13.38
0.04
0.61
31
8.50
0.50
2.96
473
8.204
59.34
206.00
543.11
13.38
0.04
0.65
32
9.00
0.50
2.96
471
8.204
59.34
206.00
543.14
13.38
0.04
0.69
33
9.50
0.50
2.96
470
8.204
59.34
206.00
543.14
13.38
0.04
0.72
34
10.00
0.50
2.96
468
8.204
59.34
206.00
543.14
13.38
0.04
0.76
35 Hwy 24-27
10.25
0.25
3.07
467
8,204
59.34
206,00
543.14
13.38
0.02
0.78
36
11.00
0.75
3,07
465
8.204
59.34
206.00
543.14
13.38
0.06
0.84
37
11.50
0.50
3.07
463
8.204
59.34
206.00
543.14
13.38
0.04
0.87
38
12.00
0.50
3.07
462
8,204
59.34
206.00
543.14
13,38
0.04
0.91
39
12.50
0.50
3.07
460
8.204
59.34
206.00
543.14
13.38
0.04
0.95
40
13.00
0.50
3.07
459
8.204
59.34
206.00
543,14
13.38
0.04
0.99
41 S8 1114
13.55
0.55
3.07
457
8.204
59.34
206.00
543.14
13.38
0.04
1.03
42
14.00
0.45
3.07
456
8.204
59.34
206.00
543.14
13.38
0.03
1.06
43
14.50
0.50
3.07
454
8,204
59.34
206.00
543.14
13.38
0.04
1.10
44 Muddy Creek WWTP
14.65
0.15
4.12
454
12.073
63.21
206.00
543.14
13.79
0.01
1.11
45
14.75
0.10
4.12
453
12.073
63.21
206.00
543.14
13.79
0.01
1.12
46
15.00
0.25
4.12
452
12.073
63.21
206.00
543.14
13.79
0.02
1.13
47
15,25
0.25
4.12
451
12.073
63.21
206.00
543.14
13.79
0.02
1.15
48
15.50
0.25
4.12
450
12.073
63.21
206.00
543.14
13.79
0.02
1.17
49
15.75
0.25
4.12
449
12.073
63.21
206.00
543.14
13.79
0.02
1.19
50
16.00
0.25
4.12
448
12.073
63.21
206.00
543.14
13.79
0.02
1.21
HDB Engineering, Inc, of North Carolina

iroposed Allocations W/ Muddy Creek WWTP
Select
"Sumter"or"Winter"
summer
Cult
Cult
QTrib
Qact
QTrib
Actual
Reach
Cum Tribs
x
di
Slope
Elevation
7Q10
7Q10
avq Qavq
u
t
Cum t
No.
-----------------------------------------------------------------------------------------------------------------------------
(1)
(miles)
(miles)
(fpm)
(NSL)
(cfs)
(cfs)
(cfs) (cfs)
(mi/dap)
(days)
(days)
51
16.25
0.25
4.12
447
12.073
63.21
206,00 543.14
13.79
0.02
1.22
52
16.50
0.25
4.12
446
12.073
63.21
206.00 543.14
13.79
0.02
1.24
53
Goose Creek
16.90
0.40
8.80
445
14.890
66.03
269.00 606.14
14.07
0.03
1.27
54
17.00
0.10
8.80
444
14,890
66.03
269.00 606.14
14.07
0.01
1.28
55
17.50
0.50
8.80
439
14.890
66.03
269.00 606.14
14,07
0.04
1.31
56
18.00
0.50
6.28
435
14,890
66.03
269.00 606.14
14.07
0.04
1.35
57
18.50
0.50
6.28
432
14.890
66.03
269.00 606.14
14.07
0.04
1.38
58
19.00
0.50
6.28
429
14.890
66.03
269.00 606.14
14.07
0.04
1.42
59
19.50
0.50
8.12
425
14.890
66.03
269.00 606.14
14.07
0.04
1.46
60
20.00
0.50
8.12
421
14.890
66.03
269.00 606.14
14.07
0.04
1.49
61
Crooked Creek
20.70
0.70
13.54
416
17.529
68.67
328.00 665.14
14.33
0.05
1.54
62
21.00
0.30
13,54
412
17.529
68.67
328.00 665.14
14.33
0.02
1.56
63
22.00
1.00
13.54
398
17.529
68.67
328.00 665.14
14.33
0.07
1.63
64
23.00
1.00
13.54
385
17.529
68.67
328,00 665.14
14.33
0.07
1.70
65
24.00
1.00
13.54
371
17.529
68.67
328.00 665.14
14.33
0.07
1.77
66
25.00
1.00
7,49
357
17,529
68.67
328.00 665.14
14.33
0.07
1.84
67
26.00
1.00
7.49
350
17.529
68.67
328.00 665.14
14.33
0.07
1.91
68
27.00
1.00
7.49
342
17.529
68.67
328.00 665.14
14.33
0.07
1.98
69
28.00
1.00
7,49
335
17.529
68.67
328.00 .665.14
14.33
0.07
2.05
70
29.00
1.00
7.49
328
17.529
68.67
328.00 665.14
14.33
0.07
2.12
71
30.00
1.00
7.49
320
17.529
68.67
328.00 665.14
14.33
0.07
2.19
72
31.00
1.00
7.49
313
17.529
68.67
328.00 665.11
14.33
0.07
2.26
73
32.00
1.00
7.49
305
17.529
68.67
328.00 665.14
14.33
0.07
2.33
74
33.00
1.00
7.49
298
17.529
68.67
328.00 665.14
11.33
0.07
2.40
75
34.00
1.00
7.49
290
17.529
68.67
328.00 665.14
14.33
0.07
2.47
76
35.00
1.00
7.49
283
17.529
68.67
328.00 665.14
14.33
0.07
2.54
77
Biq Bear/Oakboro
35.95
0.95
8.57
275
26,443
77.58
510.00 847.14
15.18
0.06
2.60
78
37.00
1.05
8.57
266
26.443
77.58
510.00 847.14
15.18
0.07
2.67
79
38.00
1.00
8.57
258
26.443
77.58
510.00 847.14
15.18
0.07
2.74
80
39.00
1.00
8.57
249
26.443
77.58
510.00 847.14
15.18
0.07
2.80
81
Richardson Creek
40.15
1.15
2.16
239
33.599
84.74
670.00 1,007.14
15.82
0.07
2.87
82
41.00
0.85
2.16
238
33.599
84.74
670.00 1,007.14
15.82
0.05
2.93
83
42.00
1.00
2.16
235
33.599
84.74
670.00 1,007.14
15.82
0.06
2.99
84
43.00
1.00
2.16
233
33,599
84.74
670.00 1,007.14
15.82
0.06
3.05
85
WOO
1.00
2.16
231
33.599
84.74
670.00 1,007.14
15.82
0.06
3.12
86
45.00
1.00
2.16
229
33.599
84.74
670.00 1,007.14
15.82
0.06
3.18
87
50.00
5.00
2.16
218
33.599
84.74
670.00 1,007.14
15.82
0.32
3.50
88
55.00
5.00
2.16
207
33.599
84.74
670.00 1,007.14
15.82
0.32
3.81
89
55.85
0.85
2.16
206
33.599
84.74
670.00 1,007.14
15.82
0.05
3.87
HDR Engineering, Inc. of North Carolina

Proposed Allocations w/ Muddy Creek WWTP
Select "Sunder"or"Winter"
V
H
Cal
Calibration
Calibration
Beach Cut Tribs
I
Cut t
Override
V
Override
H
n
Kd
Kn
Ka lowQ
No. (1)
---------------------------------------------------------------------------------------------------------------------------
(tiles)
(days)
(fps)
(fps)
(ft)
(ft)
(/day)
(/day)
(/day)
(/day)
0
0.00
0.00
0.76
0.76
1.23
1.23
0.11
0.27
0.30
0.00
1
0.10
0.01
0.76
0.76
1.23
1.23
0.11
0.27
0.30
0.00
2
0.20
0.02
0.76
0.76
1.23
1.23
0.11
0.27
0.30
0.00
3
0.30
0.02
0.76
0.76
1.23
1.23
0.11
0.27
0.30
0.00
4 Coldwater
0.40
0.00
0.79
0.79
1.25
1.25
0.11
0.27
0.30
0.00
5
0.60
0.02
0.79
0.79
1.25
1.25
0.11
0.27
0.30
0.00
6
0.80
0.03
0.79
0.79
1.25
1.25
0.11
0.27
0.30
0.00
7
1.00
0.05
0.79
0.79
1.25
1.25
0.11
0.27
0.30
0,00
8
1.25
0.07
0.79
0.79
1.25
1.25
0.11
0.27
0.30
0.00
9
1.50
0.09
0.79
0.79
1.25
1.25
0.11
0.27
0.30
0.00
10
1.75
0.10
0.79
0.79
1.25
1.25
0.11
0.27
0.30
0.00
11
2.00
0.12
0.79
0.79
1.25
1.25
0.11
0.27
0.30
0.00
12 Hwy 601
2.10
0.13
0.79
0.79
1.25
1,25
0.11
0.27
0.30
0.00
13
2.50
0.16
0.79
0.79
1.25
1.25
0.11
0.27
0.30
0.00
14
2.75
0.18
0.79
0.79
1.25
1.25
0.11
0.27
0.30
0.00
15 Hamby Branch
3.00
0.20
0.79
0.79
1.25
1.25
0.11
0.27
0.30
0.00
16
3.25
0.22
0.79
0.79
1.25
1.25
0.11
0.27
0.30
0.00
17
3.50
0.24
0.79
0.79
1.25
1.25
0.11
0.27
0.30
0.00
18
3.75
0.26
0.79
0.79
1.25
1.25
0.11
0.27
0.30
0.00
19
4.00
0.28
0.79
0.79
1.25
1.25
0.11
0.27
0.30
0.00
20
4.25
0.30
0.79
0.79
1.25
1.25
0.11
0.27
0.30
0.00
21 SE 1006
4.55
0.32
0.79
0.79
1.25
1.25
0.11
0.27
0.30
0.00
22
4.75
0.34
0.79
0.79
1.25
1.25
0.11
0.27
0.30
0.00
23
5.00
0.36
0.79
0.79
1.25
1.25
0.11
0.27
0.30
0.00
24 Dutch Buffalo
5.35
0.00
0.82
0.82
1,28
1.28
0.11
0.27
0.30
0.00
25
5.50
0.01
0.82
0.82
1.28
1.28
0.11
0.27
0.30
0.00
26
6.00
0.05
0.82
0.82
1.28
1.28
0.11
0.27
0.30
0.00
27
6.50
0.09
0.82
0.82
1.28
1.28
0.11
0.27
0.30
0.00
28
7.00
0.12
0.82
0.82
1.28
1.28
0.11
0.27
0.30
0.00
29
7.50
0.16
0.82
0.82
1.28
1.28
0.11
0.27
0.30
0.00
30
8.00
0.20
0.82
0.82
1.28
1.28
0.11
0.27
0.30
0.00
31
8.50
0.24
0.82
0.82
1.28
1.28
0.11
0.27
0.30
0.00
32
9.00
0.27
0.82
0.82
1.28
1.28
0.11
0.27
0.30
0.00
33
9.50
0.31
0.82
0.82
1.28
1.28
0.11
0.27
0.30
0.00
34
10.00
0.35
0.82
0.82
1.28
1.28
0.11
0.27
0.30
0.00
35 Hwy 24-27
10.25
0.37
0.82
0.82
1.28
1.28
0.11
0.27
0.30
0.00
36
11.00
0.42
0.82
0.82
1.28
1.28
0.11
0.27
0.30
0.00
37
11.50
0.46
0.82
0.82
1.28
1.28
0.11
0.27
0.30
0.00
38
12.00
0.50
0.82
0.82
1.28
1.28
0.11
0.27
0.30
0.00
39
12.50
0.53
0.82
0.82
1.28
1.28
0.11
0.27
0.30
0.00
40
13.00
0.57
0.82
0.82
1.28
1.28
0.11
0.27
0.30
0.00
41 SE 1114
13.55
0.61
0.82
0.82
1.28
1.28
0.11
0.27
0.30
0.00
42
14.00
0.65
0.82
0.82
1.28
1.28
0.11
0.27
0.30
0.00
43
14.50
0.68
0.82
0.82
1.28
1.28
0.11
0.27
0.30
0.00
44 Muddy Creek WWTP
14.65
0.00
0.84
0.84
1.30
1.30
0.13
0.29
0.30
0.00
45
14.75
0.01
0.84
0.84
1.30
1.30
0.13
0.29
0.30
0.00
46
15.00
0.03
0.84
0.81
1.30
1.30
0.13
0.29
0.30
0.00
47
15.25
0.04
0.84
0.84
1.30
1.30
0.13
0.29
0.30
0.00
48
15.50
0.06
0.84
0.84
1.30
1.30
0.13
0.29
0.30
0.00
49
15.75
0.08
0.84
0.84
1.30
1.30
0.13
0.29
0.30
0.00
50
16.00
0.10
0.84
0.84
1.30
1.30
0.13
0.29
0.30
0.00
HDB Engineering, Inc. of North Carolina

^rcposed Allocations K/ Kuddy Creek WWTP
Select "Sueeer"or"Winter"
V
H
Cal
Calibration
Calibration
Beach Cue Tribs
x
Cue t
Override
V
Override
H
n
Kd
Kn
Ka IoWQ
No. (1)
-----------------------------------------------------------------------------------------------------------------
(eiles)
(days)
(fps)
(fps)
(ft)
(ft)
(/day)
(/day)
(/day)
(/day)
51
16.25
0.12
0.84
0.84
1.30
1.30
0.13
0.29
0.30
0.00
52
16.50
0.13
0.84
0.84
1.30
1.30
0.13
0.29
0.30
0.00
53 Goose Creek
16.90
0.00
0.86
0.86
1.31
1.31
0.21
0.34
0.30
0.00
54
17.00
0.01
0.86
0.86
1.31
1.31
0.21
0.34
0.30
0.00
55
17.50
0.04
0.86
0.86
1.31
1.31
0.21
0.34
0.30
0.00
56
18.00
0.08
0.86
0.86
1.31
1.31
0.17
0.31
0.30
0.00
57
18.50
0.11
0.86
0.86
1.31
1.31
0.17
0.31
0.30
0,00
58
19.00
0.15
0.86
0,86
1.31
1.31
0.17
0.31
0.30
0.00
59
19.50
0.18
0.86
0.86
1.31
1.31
0.20
0.33
0.30
0.00
60
20.00
0.22
0,86
0.86
1.31
1.31
0.20
0.33
0.30
0.00
61 Crooked Creek
20.70
0.00
0.88
0.88
1.32
1.32
0.27
0.38
0.30
0,00
62
21.00
0.02
0.88
0.88
1.32
1.32
0.27
0.38
0.30
0.00
63
22.00
0.09
0.88
0.88
1.32
1.32
0.27
0.38
0.30
0.00
64
23.00
0.16
0.88
0.88
1.32
1.32
0.27
0.38
0.30
0.00
65
24.00
0.23
0.88
0.88
1.32
1.32
0.27
0.38
0.30
0.00
66
25.00
0.30
0.88
0.88
1.32
1.32
0.19
0.33
0.30
0.00
67
26.00
0.37
0.88
0.88
1.32
1.32
0.19
0,33
0.30
0.00
68
27.00
0.44
0.88
0.88
1.32
1.32
0.19
0.33
0.30
0.00
69
28.00
0.51
0.88
0.88
1.32
1.32
0.19
0.33
0.30
0.00
70
29.00
0.58
0.88
0.88
1.32
1.32
0.19
0.33
0.30
0.00
71
30.00
0.65
0.88
0.88
1.32
1.32
0.19
0.33
0.30
0.00
72
31.00
0.72
0.88
0.88
1.32
1.32
0.19
0.33
0.30
0.00
73
32.00
0.79
0.88
0.88
1.32
1.32
0.19
0.33
0.30
0.00
74
33.00
0.86
0.88
0.88
1.32
1.32
0.19
0.33
0.30
0.00
75
34.00
0.93
0.88
0.88
1.32
1.32
0.19
0.33
0.30
0.00
76
35.00
1.00
0.88
0.88
1.32
1.32
0.19
0.33
0.30
0.00
77 Big Bear/Oakboro
35.95
0.00
0.93
0.93
1.37
1.37
0.21
0.34
0.30
0.00
78
37.00
0.07
0.93
0.93
1.37
1.37
0.21
0.34
0.30
0.00
79
38.00
0.14
0.93
0.93
1.37
1.37
0.21
0.34
0.30
0.00
80
39.00
0.20
0.93
0.93
1.37
1.37
0.21
0.34
0.30
0.00
81 Richardson Creek
40.15
0.00
0,97
0.97
1.40
1.40
0.09
0.26
0.30
0.00
82
41.00
0.05
0.97
0.97
1.40
1.40
0.09
0.26
0.30
0.00
83
42.00
0.12
0.97
0.97
1.40
1.40
0.09
0.26
0.30
0.00
84
43.00
0.18
0.97
0.97
1.40
1.40
0.09
0.26
0.30
0.00
85
44.00
0.24
0.97
0.97
1.40
1.40
0.09
0.26
0.30
0.00
86
45.00
0.31
0.97
0.97
1.40
1.40
0.09
0.26
0.30
0.00
87
50.00
0.62
0.97
0.97
1.40
1.40
0.09
0.26
0.30
0.00
88
55.00
0.91
0.97
0.97
1.40
1.40
0.09
0.26
0.30
0.00
89
55.85
0.99
0.97
0.97
1.40
1.40
0.09
0.26
0.30
0.00
HDR Engineering, Inc. of Korth Carolina

Proposed Allocations K/ Muddy Creek WWTP
Select "Summer"or"Winter"
Kd(Tc)
Ka(Tc)
Calibration
Calibration
Beach Cum Tribs
r
Ka midQ
Ka highQ
Override
Kd(T)
Kn(T)
Override
Ka(T)
Dai
Daz
No. (1)
---------------------------------------------------------------------------------------------------------------------------
(miles)
(/day)
(/day)
(/day)
(/day)
(/day)
(/day)
(/day)
(mg/1)
(mg/1)
0
0.00
0.00
2.09
0.36
0.48
3.00
3.34
1.70
1.70
1
0.10
0.00
2.09
0.36
0.48
3.00
3.34
1.70
1.66
2
0.20
0.00
2.09
0.36
0.48
3.00
3.34
1.70
1.61
3
0.30
0.00
2.09
0.36
0.48
3.00
3.34
1.70
1.57
4 Coldwater
0.40
0.00
2.17
0.36
0.48
3.00
3.34
1.87
1.87
5
0.60
0.00
2.17
0.36
0.48
3.00
3.34
1.87
1.78
6
0.80
0.00
2.17
0.36
0.48
3.00
3.34
1.87
1.69
7
1.00
0.00
2.17
0.36
0.48
3.00
3.34
1.87
1.60
8
1.25
0.00
2.17
0.36
0.48
3.00
3.34
1.87
1.50
9
1.50
0.00
2.17
0.36
0.48
3.00
3.34
1.87
1.41
10
1.75
0.00
1.17
0.36
0.48
3.00
3.34
1.87
1.32
11
2.00
0.00
2.17
0.36
0.48
3.00
3.34
1.87
1.24
12 Hwy 601
2.10
0.00
2.06
0.36
0.48
3.00
3.34
1.87
1.21
13
1.50
0.00
2.06
0.36
0.48
3.00
3.34
1.87
1.09
14
2.75
0.00
2.06
0.36
0.48
3.00
3.34
1.87
1.02
15 Hamby Branch
3.00
0.00
2.06
0.36
0.48
3.00
3.34
1.87
0.96
16
3.25
0.00
2.06
0.36
0.48
3.00
3.34
1.87
0.90
17
3.50
0.00
2.06
0.36
0.48
3.00
3.34
1.87
0.84
18
3.75
0.00
2.06
0.36
0.48
3.00
3.34
1.87
0.79
19
4.00
0.00
2.06
0.36
0.48
4.00
4.46
1.87
0.54
20
4.15
0.00
2.06
0.36
0.48
4.00
4.46
1.87
0.50
21 SB 1006
4.55
0.00
2.06
0.36
0.48
4.00
4.46
1.87
0.45
12
4.75
0.00
2.06
0.36
0.48
6.00
6.69
1.87
0.20
23
5.00
0,00
2.06
0.36
0.48
6.00
6.69
1.87
0,17
24 Dutch Buffalo
5.35
0.00
2.13
0.36
0.48
6.00
6.69
2.05
2,05
25
5.50
0.00
2.13
0.36
0.48
6.00
6.69
2.05
1.90
26
6.00
0.00
2.13
0,36
0.48
6.00
6.69
2.05
1,48
27
6.50
0.00
2.13
0.36
0.48
6.00
6.69
2.05
1,15
28
7.00
0.00
2.13
0.36
0.48
6.00
6.69
2.05
0.90
29
7.50
0.00
2.13
0.36
0.48
6.00
6.69
2.05
0.70
30
8.00
0.00
2.13
0.36
0.48
6.00
6.69
2.05
0.54
31
8.50
0.00
2.13
0.36
0.48
6.00
6.69
2.05
0.42
32
9.00
0.00
2.13
0.36
0.48
6.00
6.69
2,05
0.33
33
9.50
0.00
2.13
0.36
0.48
6.00
6.69
2.05
0.26
34
10.00
0.00
2.13
0.36
0.48
6.34
7.07
2.05
0.18
35 Hwy 24-27
10.25
0.00
2.21
0.36
0.48
6.34
7.07
2.05
0.15
36
11.00
0.00
2.21
0.36
0.48
6.34
7.07
2.05
0.10
37
11.50
0.00
2.21
0.36
0.48
6.34
7.07
2.05
0.08
38
12,00
0.00
2.21
0.36
0.48
6.34
7.07
2.05
0.06
39
12.50
0.00
2.21
0.36
0.48
6.34
7.07
2.05
0,05
40
13.00
0.00
2.21
0.36
0.48
6.34
7.07
2.05
0.04
41 SR 1114
13.55
0.00
2.21
0.36
0.48
6.34
7.07
2.05
0.03
42
14.00
0.00
2.21
0.36
0.48
6.34
7.07
2.05
0.02
43
14.50
0.00
2.21
0.36
0.48
6.34
7.07
2.05
0.02
44 Muddy Creek WWTP
14.65
0.00
3.05
0.38
0.48
6.36
7.09
1.90
1.90
45
14.75
0.00
3.05
0.38
0.48
6.36
7.09
1.90
1.81
46
15.00
0.00
3.05
0.38
0.48
6.36
7.09
1.90
1.59
47
15.25
0.00
3.05
0.38
0.48
6.36
7.09
1.90
1.40
48
15.50
0.00
3.05
0.38
0.48
6.36
7.09
1.90
1.23
49
15.75
0.00
3.05
0.38
0.48
6.36
7.09
1.90
1.08
50
16.00
0.00
3.05
0.38
0.48
6.36
7.09
1.90
0.95
HDB Engineering, Inc. of North Carolina

Proposed Allocations W/ Muddy Creek WWTP
Select "Sunder"or"Winter"
Rd(Tc)
Ra(Tc)
Calibration
Calibration
Beach Cum Tribs
x
Ka midQ
Ka highQ
Override
Ad(T)
An(T)
Override
Ka(T)
Da
Daa
No. (1)
--- - ---------------------------------------------------------------------------------------------------
(miles)
(/day)
(/day)
(/day)
(/day)
(/day)
(/day)
(/day)
(mg/1)
(mgll)
51
16.25
0.00
3.05
0.38
0.48
6.36
7.09
1.90
0.84
52
16.50
0.00
3.05
0.38
0.48
6.36
7.05
1,90
0.74
53 Goose Creek
16.90
0.00
6.66
0.45
0.48
6.37
7.10
1.91
1.91
54
17.00
0.00
6.66
0.45
0.48
6.37
7.10
1.91
1.82
55
17.50
0.00
6.66
0.45
0.48
6.37
7.10
1.91
1.41
56
18.00
0.00
4.75
0.41
0.48
6.37
7.10
1.91
1.10
57
18.50
0.00
4.75
0.41
0.48
6.37
7.10
1.91
0.85
58
19.00
0.00
4.75
0.11
0.48
6.37
7.10
1.91
0.66
59
19.50
0.00
6.14
0.44
0.48
6.37
7.10
1.91
0.51
60
20.00
0.00
6.14
0.44
0.48
6.37
7.10
1.91
0.40
61 Crooked Creek
20.70
0.00
10.44
0.50
0.48
6.38
7.11
1.88
1.88
62
21.00
0.00
10.44
0.50
0.48
6.38
7.11
1.88
1.62
63
12.00
0.00
10.44
0.50
0.48
6.38
7.11
1.88
0.98
64
23.00
0.00
10.44
0.50
0.48
6.38
7.11
1.88
0.60
65
24.00
0.00
10.44
0.50
0.48
6.38
7.11
1.88
0.37
66
25.00
0.00
5.77
0.43
0.48
6.38
7,11
1.88
0.22
67
26.00
0.00
5.77
0.43
0.48
6.38
7.11
1.88
0.14
68
27.00
0.00
5.77
0.43
0.48
6.38
7.11
1.88
0.08
69
28.00
0.00
5.77
0.43
0.48
6.38
7.11
1,88
0,05
70
29.00
0.00
5.77
0.43
0.48
6.38
7.11
1.88
0.03
71
30.00
0.00
5.77
0.43
0.48
6.38
7.11
1.88
0.02
72
31.00
0.00
5.77
0.43
0.48
6.38
7.11
1.88
0.01
73
32.00
0.00
5.77
0.43
0.48
6.38
7.11
1.88
0.01
74
33.00
0.00
5.77
0.43
0.48
6.38
7.11
1.88
0.00
75
34.00
0.00
5.77
0.43
0.48
6.38
7.11
1.88
0.00
76
35.00
0.00
5.77
0.43
0.48
6.38
7.11
1.88
0.00
77 Big Bear/Oakboro
35.95
0.00
7.00
0.45
0.48
6.41
7.14
1.22
1.22
78
37.00
0.00
7,00
0.45
0.48
6.41
7.14
1.22
0.74
79
38.00
0.00
7.00
0.45
0.48
6.41
7.14
1.22
0.46
80
39.00
0.00
7.00
0.45
0.48
6.41
7.14
1.22
0.29
81 Richardson Creek
40.15
0.00
1.84
0.35
0.48
6.43
7.17
1.08
1.08
82
41.00
0.00
1.84
0.35
0.48
6.43
7.17
1.08
0.74
83
42.00
0.00
1.84
0.35
0.48
6.43
7.17
1.08
0,47
84
43.00
0.00
1.84
0.35
0.48
6.43
7.17
1.08
0.30
85
44.00
0.00
1.84
0.35
0.48
6.43
7.17
1.08
0.19
86
45.00
0.00
1,84
0.35
0.48
6.43
7.17
1.08
0.12
87
50.00
0.00
1.84
0.35
0.48
6.43
7.17
1.08
0.01
88
55.00
0.00
1.84
0.35
0.48
6.43
7.17
1.08
0,00
89
55.85
0.00
1.84
0.35
0.48
6.43
7.17
1.08
0.00
HDR Engineering, Inc. of Korth Carolina

Proposed Allocations w/ Muddy Creek WWTP
Select "Sutter"or"Winter"
Conside
Beach Cue Tribs
a
CBODi
CBODa
Dcl
NBODi
NBODa
Dna
Cut Da
Sat DO
DOx
Dsa
No. (1)
----------------------------------------------------------------------------------------------------------------------------
(tiles)
(eg/1)
(mg/1)
(mg/1)
(tg/1)
(eg/l)
(t9/1)
(tg/1)
(eg/1)
(egll)
(mg/1)
0
0.00
31.41
31.41
0.00
13.20
13.20
0.00
1.70
8.11
6.41
0.00
1
0.10
31.41
31.32
0.09
13.20
13.14
0.05
1.80
8.11
6.32
0,02
2
0.20
31.41
31.23
0.17
13.20
13.09
0.10
1.89
8.11
6.23
0.04
3
0.30
31.41
31.14
0.26
13.20
13,05
0.11
1.97
8.11
6.14
0.06
4 Coldwater
0.40
29.03
29.03
0,00
12.13
12.13
0.00
1.87
8.11
6.24
0.00
5
0.60
29.03
28.87
0.16
12.13
12.04
0.09
2.02
8.11
6.09
0.04
6
0.80
29.03
28.71
0.30
12.13
11.95
0.17
2.16
8.11
5.95
0.07
7
1.00
29.03
28.55
0.44
12.13
11.87
0.25
2.29
8.11
5.82
0.10
8
1.25
29.03
28.35
0.61
12.13
11.76
0.34
2.45
8.11
5.67
0.14
9
1.50
29.03
28.16
0.76
12.13
11.65
0.42
2.59
8.11
5.53
0.17
10
1.75
29.03
27.96
0.90
12.13
11.54
0.50
2.72
8.11
5.40
0.21
11
2.00
29.03
27.77
1.03
12.13
11.44
0.57
2.84
8.11
5.28
0.24
12 Hwy 601
2.10
29.03
27.70
1.07
12.13
11.40
0.59
2.87
8.11
5.24
0.25
13
2.50
29.03
27.40
1.25
12.13
11.23
0.69
3.04
8.11
5.08
0.30
14
2.75
29.03
27.21
1.36
12.13
11.13
0.75
3.13
8.11
4.99
0.32
15 Haeby Branch
3.00
29.03
27.03
1.45
12.13
11.02
0.80
3.21
8.11
4.90
0.34
16
3.25
29.03
26.84
1.54
12.13
10.92
0.85
3.29
8.11
4.83
0.37
17
3.50
29.03
26.66
1.62
12.13
10.82
0.89
3.36
8.11
4.76
0.39
18
3.75
29.03
26.48
1.70
12.13
10.72
0.93
3.42
8.11
4.70
0.41
19
4.00
29.03
26.29
1.55
12.13
10.63
0.85
2.94
8.11
5.17
0.38
20
4.25
29.03
26.11
1.59
12.13
10.53
0.87
2.97
8.11
5.15
0.39
21 SR 1006
4.55
29.03
25.90
1.64
12.13
10.41
0.90
2.99
8.11
5.13
0.40
22
4.75
29.03
25.76
1.27
12.13
10.34
0.69
2.16
8.11
5.95
0.32
23
5.00
29.03
25.58
1.28
11.13
10.21
0.70
2.16
8.11
5.96
0.32
24 Dutch Buffalo
5.35
23.91
23.91
0.00
9.55
9.55
0.00
2.05
8.11
6.07
0.00
25
5.50
23.91
23.82
0.09
9.55
9.50
0.05
2.04
8.11
1.07
0.02
26
6.00
23.91
23.50
0.35
9.55
9.33
0.19
2.02
8.11
6.10
0.10
27
6.50
23.91
23.19
0.55
9.55
9.16
0.29
1.99
8.11
6.12
0.15
28
7.00
23.91
22.88
0.70
9.55
9.00
0.37
1.97
8.11
6.15
0.19
29
7.50
23.91
22.58
0.81
9.55
8.84
0.43
1.94
8.11
6.17
0.23
30
8.00
23.91
22.28
0.90
9.55
8.69
0.47
1.91
8.11
6.20
0.25
31
8.50
23.91
21.98
0.96
9.55
8.54
0.50
1.89
8.11
6.23
0.27
31
9.00
23.91
21.69
1.01
9.55
8.38
0.52
1.86
8.11
6.25
0.29
33
9.50
23.91
21.41
1.01
9.55
8.24
0.51
1.83
8.11
6.28
0.30
34
10.00
23.91
21.12
1.01
9.55
8.09
0.52
1.71
8.11
6.40
0.30
35 Hwy 24-27
10.25
23.91
20.97
1.02
9.55
8.02
0.53
1.71
8.11
6.11
0.30
36
11.00
23.91
20.55
1.03
9.55
7.81
0.53
1.67
8.11
6.45
0.31
37
11.50
23.91
20.28
1.03
9.55
7.67
0.53
1.64
8.11
6.47
0.31
38
12.00
23.91
20.00
1.03
9.55
7.54
0.52
1.62
8.11
6.50
0.32
39
12.50
23.91
19.74
1.03
9.55
7.40
0.52
1.59
8.11
6.52
0.32
40
13.00
23.91
19.48
1.02
9.55
7.27
0.51
1.57
8.11
6.55
0.32
41 SR 1114
13.55
23.91
19.19
1.01
9.55
7.13
0.51
1.54
8.11
6.57
0.32
42
14.00
23.91
18.96
1.00
9.55
7.02
0.50
1.52
8.11
6.59
0.32
43
14.50
23.91
18.71
0.99
9.55
6.89
0.49
1.50
8.11
6.61
0.32
44 Muddy Creek WWTP
14.65
22.15
22.15
0.00
13.36
13.36
0.00
1.90
8.11
6.21
0.00
45
14.75
22.15
22.09
0.06
13.36
13.31
0.04
1.91
8.11
6.20
0.02
46
15.00
22.15
21.94
0.19
13.36
13.20
0.15
1.93
8.11
6.18
0.05
47
15.25
22.15
21.79
0.31
13.36
13.08
0.24
1.95
8.11
6.17
0.09
48
15.50
22.15
21.64
0.41
13.36
12.97
0.31
1.96
8.11
6.16
0.11
49
15.75
22.15
21.49
0.50
13.36
12.86
0.38
1.96
8.11
6.15
0.14
50
16.00
22.15
21.35
0.58
13.36
12.75
0.44
1.97
8.11
6.14
0.16
MDR Engineering, Inc. of North Carolina

Proposed Allocations W/ Muddy Creek WWTP
Select "Sutter"or"Winter" Conside
Beach
Cue Tribs
a
CBODi
CBODa
Dcx
NBODi
NBODa
Dna
Cut Da
Sat DO
DOa
Dsa
No.
----------------------------------------------------------------------------------------------------------------------------
(1)
(tiles)
(t9/1)
(t9/1)
(19/1)
(19/1)
(t911)
(09/1)
(t9/1)
(0911)
(t9/1)
(t911)
51
16.25
22.15
21.20
0.65
13.36
12.64
0.49
1.97
8.11
6.14
0.18
51
16,50
22.15
21.05
0.71
13.36
12.53
0.53
1.97
8.11
6.14
0.20
53
Goose Creek
16.90
20.24
20.24
0.00
12.02
12.02
0.00
1.91
8.11
6.20
0.00
54
17.00
20.24
20.18
0.06
12.02
11.97
0.04
1.92
8.11
6.19
0.02
55
17.50
20.24
19.86
0.33
12.02
11.77
0.21
1.95
8.11
6.16
0.08
56
18.00
20.24
19.60
0.49
12.02
11.58
0.34
1.93
8.11
6.19
0.14
57
18.50
20.24
19.31
0.64
12.02
11.38
0.43
1.92
8.11
6.19
0.18
58
19.00
20.24
19.03
0.74
12.02
11.19
0.51
1.91
8.11
6.20
0.21
59
19.50
20.24
18.67
0.87
12.02
11.00
0.56
1.94
8.11
6.17
0.23
60
20.00
20.24
18.38
0.93
12.02
10.82
0.60
1.93
8.11
6.19
0.25
61
Crooked Creek
20.70
17.75
17.75
0.00
10.42
10.42
0.00
1.88
8.11
6.24
0.00
62
21.00
17.75
17.56
0.17
10.42
10.32
0.10
1.89
8.11
6.23
0.04
63
22.00
17.75
16.96
0.58
10.42
9.98
0.32
1.89
8.11
6.22
0.15
64
23.00
17,75
16.37
0.81
10.42
9.65
0.45
1.87
8.11
6.25
0.21
65
24.00
17.75
15.81
0.94
10.42
9.34
0.52
1,83
8.11
6.28
0.25
66
25.00
17.75
15.59
0.87
10.42
9.03
0.56
1.65
8.11
6.46
0.28
67
26.00
17.75
15.13
0.89
10.42
8.74
0.57
1.60
8.11
6.51
0.29
68
27.00
17.75
14.68
0.90
10.42
8.45
0.57
1.55
8.11
6.56
0,30
69
28.00
17.75
14.25
0.89
10.42
8.18
0.57
1.51
8.11
6.61
0.31
70
29.00
17.75
13.82
0.87
10.42
7.91
0.56
1.16
8.11
6.65
0.31
71
30.00
17.75
13.41
0.86
10.42
7.65
0.54
1.42
8.11
6.70
0.31
72
31.00
17.75
13.02
0.83
10.42
7.40
0.53
1.37
8.11
6.74
0.31
73
32.00
17.75
12.63
0.81
10.42
7.16
0.51
1.33
8.11
6.78
0.31
74
33.00
17.75
12.26
0.79
10.42
6.93
0.50
1.29
8.11
6.82
0.31
75
34.00
17.75
11.89
0.77
10.42
6.70
0.48
1.25
8.11
6.86
0.31
76
35.00
17.75
11.54
0.74
10.42
6.48
0.46
1.21
8.11
6.90
0.31
77
Big Bear/Oakboro
35.95
11.17
11.17
0.00
6.91
6.91
0.00
1.22
8.11
6.90
0.00
78
37.00
11.17
10.83
0.27
6.91
6.68
0.18
1.19
8.11
6.92
0.12
79
38.00
11.17
10.51
0.42
6.91
6.48
0.27
1.16
8.11
6.95
0.19
80
39.00
11.17
10.21
0.51
6.91
6.28
0.33
1.13
8.11
6.98
0.23
81
Richardson Creek
40.15
9.51
9.51
0.00
5.78
5.78
0.00
1.08
8.11
7.03
0.00
81
41.00
9.51
9.34
0.15
5.78
5.64
0.12
1.00
8.11
7.11
0.09
83
42.00
9.51
9.13
0.26
5.78
5.47
0.21
0.94
8.11
7.18
0.17
84
43.00
9.51
8.94
0.32
5.78
5.31
0.26
0.88
8.11
7.23
0.21
85
44.00
9.51
8.74
0.36
5.78
5.15
0.29
0.84
8.11
7.27
0.24
86
45.00
9.51
8.55
0.38
5.78
5.00
0.31
0.81
8.11
7.30
0.26
87
50.00
9.51
7.66
0.38
5.78
4.30
0.30
0.70
8.11
7.41
0.29
88
55.00
9.51
6.87
0.35
5.78
3.70
0.26
0.61
8.11
7.50
0.29
89
55.85
9.51
6.74
0.34
5.78
3.61
0.26
0.60
8.11
7.51
0.29
HDR Engineering, Inc. of North Carolina

Proposed Allocations w/ Muddy Creek WWPP
Select "Sumter"or"Winter"
ring SOD
---------
Pereit
CalibrationCalibration
Beach Cum !ribs -
a
DOa
bieit
DO
CBOD
No. (1)
--------------------------------------------------------------------------
(tiles)
(mg/1)
(tg/1)
(mg/1)
(mg/1)
0
0.00
6.41
5.00
1
0.10
6.30
5.00
2
0.20
6.19
5.00
3
0.30
6.08
5.00
4 Coldwater
0.40
6.24
5.00
5
0.60
6.05
5.00
6
0.80
5.88
5.00
7
1.00
5.72
5.00
8
1.25
5.53
5.00
9
1.50
5.35
5.00
10
1.75
5.19
5.00
11
2.00
5.01
5.00
12 Hwy 601
2.10
4.99
5.00
6.13
22.28
13
2.50
4.78
5.00
14
2.75
4.67
5.00
15 Haeby Branch
3.00
4.56
5.00
6.03
17.10
16
3.25
4.46
5.00
17
3.50
4.37
5.00
18
3.75
4.29
5.00
19
4.00
4.79
5.00
20
4.25
4.76
5.00
21 SR 1006
4.55
4.72
5.00
6.57
18.48
22
1.75
5.63
5.00
23
5.00
5.64
5.00
24 Dutch Buffalo
5.35
6.07
5.00
25
5.50
6.05
5.00
26
6.00
6.00
5.00
11
6.50
5.97
5.00
28
7.00
5.95
5.00
29
7.50
5.95
5.00
30
8.00
5.95
5.00
31
8.50
5.95
5.00
32
9.00
5.96
5.00
33
9.50
5.98
5.00
34
10.00
6.10
5.00
35 Hwy 24-27
10.25
6.10
5.00
6.83
10.56
36
11.00
6.14
5.00
37
11.50
6.16
5.00
38
12.00
6.18
5.00
39
12.50
6.20
5.00
40
13.00
6.22
5.00
41 SR 1114
13.55
6.25
5.00
8.15
42
14.00
6.27
5.00
43
14.50
6.29
5.00
44 Muddy Creek WWTP
14.65
6.21
5.00
45
14.75
6.19
5.00
46
15.00
6.13
5.00
47
15.25
6.08
5.00
48
15.50
6.04
5.00
49
15.75
6.01
5.00
50
16.00
5.98
5.00
HDR Engineering, Inc. of North Carolina

Pioposed Allocations x/ Muddy Creek WWTP
Select "Sueeer"or"Winter" ring SOD
--------- Permit CalibrationCalibration
Beach Cue !ribs a DOa Lieit DO CBOD
No. (1) (eiles) (mg/1) (eg/1) (eg/1) (mg/1)
--------------------------------------------------------------------------
51 16.25 5.96 5.00
52 16.50 5.94 5.00
53 Goose Creek 16.90 6.20 5.00
54 17.00 6.18 5.00
55 17.50 6.08 5.00
56 18.00 6.05 5.00
57 18.50 6.02 5.00
58 19.00 5.99 5.00
59 19.50 5.94 5.00
60 20.00 5.93 5.00
61 Crooked Creek 20.70 6.24 5.00
62 21,00 6.18 5.00
63 22.00 6.07 5.00
64 23.00 6.03 5.00
65 24.00 6.03 5.00
66 25.00 6.18 5.00
67 26.00 6.22 5.00
68 27.00 6.26 5.00
69 28.00 6.30 5.00
70 29.00 6.34 5.00
71 30.00 6.39 5,00
72 31.00 6.43 5.00
73 32.00 6.47 5.00
74 33.00 6.51 5.00
75 34.00 6.55 5.00
76 35.00 6.59 5.00
77 Big Bear/Oakboro 35.95 6.90 5.00
78 37.00 6.81 5.00
79 38.00 6.77 5.00
80 39.00 6.75 5.00
81 Richardson Creek 40.15 7.03 5.00
82 41.00 7.01 5.00
83 42.00 7,01 5.00
84 43.00 7.01 5.00
85 44,00 7.02 5.00
86 45.00 7.04 5.00
87 50.00 7.12 5.00
88 55.00 7.21 5.00
89 55.85 7.22 5.00
HDR Engineering, Inc, of North Carolina

DIVISION OF ENVIRONMENTAL MANAGEMENT
May 28, 1992
TO: - Boyd DeVane
THROUGH: Ruth Swanek.,
Trevor Clements
FROM: Stephen Bevington,19 VX
SUBJECT: Cabarrus County Utilities Department Muddy Creek / Rocky River WWTP
Environmental Assessment
Technical Support has completed a review of the environmental assessment (EA)
for the proposed Muddy Creek /Rocky River WWTP. The EA includes proposed
effluent limits for flows of 0.3 and 1.8 MGD (Table 2). These limits may be sufficient to
protect water quality in the Rocky River. However, it is important to note that the final
effluent limits for toxicants, including ammonia, will depend upon dilution available in
Rocky River as well as conditions at other NPDES discharges. Final limits will be
determined with consideration of the Yadkin Basinwide plan and Rocky River QUAL2E
water quality model now being developed.
cc Rex Gleason, MRO

To: Permits and Engineering Unit
Water Quality Section
Date: March 19, 1992
NPDES STAFF REPORT AND RECOMMENDATIONS
iLiv ILD
County: Cabarrus REG
NPDES Permit No.: NCO081621
MRO No.: 9 2- 1 2 MAR 2 6 1"2
PART I - GENERAL INFORMATION
TECHNICAL SUPPORT BRANCH
1. Facility and Address: Muddy Creek WWTP
Cabarrus County Utilities Department
2326 Hwy. 73 West
Concord, N.C. 28026
2. Date of Investigation: March 5, 1992
3. Report Prepared By: Michael L. Parker, Environ. Engr. II
4. Person Contacted and Telephone Number: Raymond D. Hamilton,
P.E.,[phone]
5. Directions to Site: From the junction of Highway 601 and SR
1115 in southern Cabarrus County, travel southeast on SR 1115
approximately 1.1 mile to the junction with SR 1113. Turn left
(north) on SR 1113 and travel approximately 0.6 mile. The
entrance to the proposed WWTP site is on the right side of SR
1113 via a dirt access road.
6. Discharge Point(s), List for all discharge Points: -
Latitude: 350 12' 32"
Longitude: 800 29' 27"
Attach a USGS Map Extract and indicate treatment plant site
and discharge point on map.
USGS Quad No.: G 17 NW
7. Size (land available for expansion and upgrading): There is
ample area available for the construction of the proposed
facility (approx. 15 acres).
8. Topography (relationship to flood plain included): The site
appears to be located adjacent to the 100 year flood plain of
the receiving stream, however, no WWT units will be
constructed within the flood plain.
9. Location of Nearest Dwelling: The nearest dwelling is
approximately 2000 feet from the WWTP site.

Page Two
10. Receiving Stream or Affected Surface Waters: Rocky River
a. Classification: C
b. River Basin and Subbasin No.: Yadkin 03-07-12
C. Describe receiving stream features and pertinent
downstream uses: The receiving stream channel was
approx. 75 feet wide and estimated to be 3-5 feet deep.
The surrounding area is almost entirely
agricultural/rural in use and the nearest known
discharger (upstream) is the City of Concord (NC0036269).
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. Type of Wastewater: 100% Domestic (Anticipated)
0% Industrial
a. Volume of Wastewater: 0.300 MGD (Initial Phase)
b. Types and quantities of industrial wastewater: The
applicant does not anticipate any industrial wastewater
from existing businesses currently located within the
project service area. Should industrial wastewater
generators connect to this facility, pretreatment may be
necessary.
C. Prevalent toxic constituents in wastewater: None with
the exception of chlorine are expected in the waste
stream.
d. Pretreatment Program (POTWs only): Not needed at this
time.
2. Production Rates (industrial discharges only) in Pounds: N/A
3. Description of Industrial Process (for industries only) and
Applicable CFR Part and Subpart: N/A
4. Type of Treatment (specify whether proposed or existing):
The proposed WWT facilities will consist of an influent pump
station, a flow splitter box, a mechanical bar screen, an
aerated grit chamber, dual aeration basins (0.15 MGD
capacity), dual secondary clarifiers, dual aerobic sludge
digesters, dual sludge holding tanks, a sludge drying bed,
gaseous chlorine disinfection facilities, a chlorine contact
chamber, and a parshall flume with recorder for flow
measurement.
5. Sludge Handling and Disposal Scheme: Sludge will be land
applied to an area which will be permitted at a later date.
Sludge drying beds will be available for inclement weather.
6. Treatment Plant Classification: Less than 5 points; no
rating (include rating sheet). Class III

Page Three
7. SIC Code(s): 4952
Wastewater Code(s):
Primary: 01
Secondary: N/A
8. MTU Code(s): 05003
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grants
Funds (municipals only)? No
2. Special monitoring requests: None pending receipt of the WLA.
3. Additional effluent limits requests: None pending receipt of
the WLA.
4. Air Quality and/or Groundwater concerns or hazardous waste
utilized at this facility that may impact water quality, air
quality or groundwater? No AQ or GW concerns nor will
hazardous waste be utilized at this facility.
PART IV - EVALUATION AND RECOMMENDATIONS
Cabarrus County (CC) proposes to construct a 0.300 MGD WWTP
(to be built in 0.150 MGD phases) to serve the Town of Midland and
surrounding area of southeastern Cabarrus County. This area is
projected to receive significant growth in the near future as a
result of a nearby highway expansion and the planned development of
a Midland business park. The facility will also provide much needed
sewer service to those residents who have failing septic tank
systems. At the present time, wastewater in the proposed service
area is domestic only. The WWT facilities will also eliminate the
proposed discharge from the Midland Business Park (NC0065498).
A preliminary modeling of the receiving stream by the
applicant's engineer considered stream characteristics based on
anticipated effects from the Rocky River WWTP located approx. 15
miles upstream of the proposed facility. Preliminary results
indicate that the recovery zone for D.O. is well above the proposed
discharge location, therefore, secondary limitations are
anticipated. This, however, cannot be assured until Technical
Support can complete a WLA for this facility. Additional WWT
facilities may be required pending receipt of the WLA.

Page Four
The applicant proposes to extend the outfall pipe from this
facility into the center of the Rocky River, thereby, aiding in
dispersion of the effluent.
Pending receipt and approval of the WLA, it is recommended
that an NPDES be issued to the County.
Signature of Report Preparer Date
ZLI �1:
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State of North Carolina
Department of Environment, Health, and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27604
James G. Martin, Governor George T. Everett, Ph.D.
William W. Cobey, Jr., Secretary February 27, 1992 Director
Mr. David D. Patrick, Jr.
HDR Engineering
Suite 1400
128 South Tryon Street
Charlotte, North Carolina 28202-5001
Dear Mr. Patrick:
The Division of Environmental Management has reviewed the
draft Environmental Assessment (DEA) for the proposed Muddy
Creek/Rocky River Wastewater Treatment Plant and interceptor
pipelines.
Our Technical Support Branch has identified concerns with
the proposed limits (see attached memo). Please contact Mr.
Steve Bevington if you have any questions (phone [phone]).
The DEA needs to be revised to reflect DEM's recommended limits.
The remainder of the document appears suitable for review by
the full department. Once the document has been revised to
address DEM's recommended limits, please submit 12 copies for
internal EHNR review. Feel free to contact me if you have any
questions.
ARC/kls
Patrick.ltr/ARC/WPl
Enclosure
cc: Steve Bevington
Dale Overcash
Boyd DeVane
Sincerely,
Alan R. Clark
REGIONAL OFFICES
Asheville Fayetteville Mooresville Raleigh Washington Wilmington Winston-Salem
704/251-6208 919/486-1541 704/663-1699 919/571-4700 919/946-6481 919/395-3900 919/896-7007
Pollution Prevention Pays
P.O. Box 29535, Raleigh, North Carolina 27626-053.5 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

DIVISION OF ENVIRONMENTAL MANAGEMENT
February 18, 1992
MEMORANDUM
TO: Alan Clark
THROUGH: Ruth Swanek RCS
Trevor Clemente
FROM: ev ngtcin if
SUBJECT: Cabarrus County Utilities Department Muddy Creek / Rocky River WWTP
Environmental Assessment
The proposed limits presented in the Muddy Creek / Rocky River Environmental
Assessment (EA) are unlikely to be consistent with recommendations from the Technical
Support Branch. Secondary treatment limits, as proposed in Table 2, may be insufficient
to protect water quality in the Rocky River for two reasons. First, as the facility reaches
its maximum planned capacity of 1.8 MGD, an ammonia limit will be required to prevent
toxicity. The final ammonia limit will depend upon dilution available in the Rocky River
as well as conditions at the Concord Regional WWTP and other NPDES discharges. The
second reason why the proposed limits may be insufficient to protect water quality is that
the proposed facility is likely to interact with several other waste water sources. A
basinwide plan, now being developed for the Yadkin riverbasin, will involve allocating
waste with consideration of all interacting sources. An updated QUAL2E river model
for the Rocky River is nearing completion, and will be used to determine the appropriate
limits for the proposed facility.
In addition to an ammonia limit, the proposed facility would have to meet a Fecal
Coliform limit of 200 per 100 ml and should plan on dechlorination if chlorine is to be
used for disinfection. Table 2 should be amended to include a Fecal Coliform limit and,
if chlorine disinfection is planned for, a chlorine limit of 28 ug/l.
In section II. B., it is stated that the project will eventually serve the existing
commercial/industrial establishments at the intersection of US Hwy 601 and NC Hwy
24-27. This section of the report should be expanded to state what kind of
commercial/industrial facilities are present and whether wastewater from these facilities
is expected to be of domestic quality.
It should also be noted that the river model discussed in the EA (Section V. I.)
cannot be evaluated because it is not presented in full detail. Also, new data from time of
travel and sediment oxygen demand studies have become available since this model was
calibrated.
cc: Rex Gleason
MRO Regional Water Quality Supervisor