NC0020184_SPECULATIVE LIMITS_19910823

WDES DOCUMENT SCAMMIM i COVER SHEET
NPDES Permit: NC0020184
Gastonia — Long- Creek WWTP
Document Type: Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
AK
Speculative Limits
201 Facilities Plan
Instream Assessment (67B)
Environmental Assessment (EA)
Permit
History
Document Date: August 23, 1991
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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 27611
James G.Martin,Governor George T. Everett, Ph.D.
William W.Cobey,Jr.,Secretary Director
August 23, 1991
Mr. John W. McLaughlin, PE
J.N. Pease Associates
P.O. Box 18725
2925 East Independence Blvd.
Charlotte, N.C. 28218
Subject: Speculative Limits for Long Creek WWTP Expansion into the
South Fork Catawba River
Dear Mr. McLaughlin:
Your request for speculative effluent limits for the proposed expansion of
the Gastonia-Long Creek facility to the South Fork Catawba River has been com-
pleted by the staff of the Technical Support Branch. The speculative nature of
this analysis must be emphasized because of its completion without review or
comments from the staff of our Mooresville Regional Office. upon their review,
additional information could be provided that was not input during this analy-
sis.
Gastonia proposes to relocate the Long Creek outfall to just below the Spen-
cer Mountain Dam in the South Fork Catawba River. A point of concern during the
modeling analysis was that the new location is in a section of river where a
large diversion of flow occurs in the mainstem of the South Fork Catawba River
due to Duke Power's Spencer Mountain Hydropower Project . Technical Support has
acquired information that states the FERC required release of the Dam is only 25
cfs in this affected segment. Division policy requires that the modeling analy-
sis must be performed using the release of the Dam as the design flow for
establishing the wasteload.
Based on the information available, the Technical Support Branch developed
effluent limits at the wasteflow of 8.0 MGD. Our modeling analysis indicates
the following interim limits for conventional constituents will be acceptable
for an interim level of water quality protection until the facility upgrade is
completed:
BOD5 15
NH3—N 7
DO 5
Fecal Coliform 200
pH 6-9
Polludon Prewndon Pays
P.O. Box 27687,Raleigh,North Carolina 27611-7687 Telephone [phone]
An Equal Opporlvnity Affim-lative Action Employer

Tentative effluent limits were also developed for metals; however the
pretreatment information used was submitted to the Division in 1987, and has
probably been updated since then. The recommended daily maximum limits based on
this preliminary information are:
Chromium 150 ug/l
Nickel 265 ug/l
Lead 34 ug/1
Cyanide 15 ug/l
Mercury 0.04 ug/1
Monthly effluent monitoring requirements should also be included for cad-
mium, copper, zinc, and silver. The instream waste concentration (IWC) at 8 .0
MGD is 33% and a chronic toxicity testing requirement, with sampling in the
months of March, June, September, and December, will remain a permit condition.
You should note that the preliminary limits given above are only an interim
solution until Gastonia's plant upgrades are completed. The Division of Envi-
ronmental Management (DEM) is currently planning a basinwide water quality
management initiative. our schedule for implementation in the Catawba River
Basin begins in 1995. The plan will address all sources of point and nonpoint
pollutants. In addressing interaction of sources, wasteload allocations may be
affected. Those facilities that already have high levels of treatment technol-
ogy are least likely to be affected. The City of Gastonia should consider the
implementation of this basinwide strategy in planning its relocation and
subsequent expansion, as opposed to limits proposed here which only address the
receiving waters of the South Fork Catawba River. Therefore, DEM recommends
planning for advanced tertiary limits for the plant expansion.
As a tributary to Lake Wylie, the South Fork Catawba River will be reviewed
for nutrient reductions to the Lake. Although no management decisions have been
made, nutrient limitations on point sources are considered a possibility. Gas-
tonia should anticipate the possible inclusion of a total phosphorus limit that
would range from 0.5 to 2 mg/l. A total nitrogen limit of 4 to 8 mg/l is also
possible. A plant designed with a high degree of flexibility to include
nutrient removal should be considered.
North Carolina has recently adopted an action level for total residual chlo-
rine (TRC) of 17 ug/l to protect against toxicity to aquatic life under low flow
conditions . An effluent TRC limit of 28 ug/1 will be applied to the expanded
Gastonia facility at the relocated discharge once the facility is upgraded. The
process of chlorination-dechlorination or alternative methods of disinfection
are options to be considered in order to comply with the TRC limit.
Color and turbidity in the South Fork Catawba Basin are viewed by DEM as
problems. Basin management plans are likely to develop strategies to address
these problems. If significant industrial users contribute color to Gastonia' s
effluent, they may wish to begin building a database of influent and effluent
color. (The Division recommends monitoring in units of ADMI) .

If there are additional questions concerning these matters, please contact
—Ruth Swanek or me at [phone].
Sinc ely,
Trhnical
Clements, As C
T Support Branch
JTC/JMN
cc: Steve Tedder
Don Safrit
Rex Gleason
Central Files

P E A S E
Architect o re E n g i n e e r i n g P l a n n i n g I n t e r i o r s
June 28, 1991
Mr. Trevor Clements
Assistant Chief
Water Quality Section
Department of Environment, Health
and Natural Resources
Division of Environmental Management
512 N. Salisbury Street
Raleigh, North Carolina 27611
Reference: Long Creek WWTP Expansion
Gastonia, North Carolina
J. N. Pease Associates Comm. No. 90087.00
Subject: South Fork Limits
Dear Mr. Clements:
This letter is written in reference to our recent phone conversation regarding the use of
interim limits for the proposed Long Creek WWTP outfall extension. As you are aware, we
are proposing to extend the existing plant outfall to the South Fork River at approximately
latitude 350 19' 35" and Longitude 81' 06' 52".
We hereby request on behalf of the City of Gastonia, new permit limits for this outfall
extension. While we understand that the South Fork River may not offer a great increase in
limits for metals, we would anticipate an increase with regard to toxicity, 1301) , TSS, etc.
Please keep in mind Ihat this request is based on the existing; permitted plant flow of 8
MGD. The plant expansion will not go into effect until after this outfall is complete and in
operation.
If you have any questions, or require any further information, please give me a call. Your
L'me and efforts in this matter ar,,, appreciawd.
S- cerely,
3oW. McLaughlin, P. {
f
JWM/jg
cc: Mr. Samuel L. Wilkins, PE
Mr. John Shuler, PE JUL 5
Mr. Coleman Keeter
Mr. Donald 'f. Garbrick PE
TECHNICAL SUI ORT BRAN N,
J.N. tease Associates P0. Box t8724; 2925 F,.isl Independence Blvd. Charlotte,NC 28218 704 376-6423

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GASTONIA-SF CATAWBA R.
AMMONIA ANALYSIS
7Q10 : 25. 0000 cfs
NH3 Effl . Conc: 0 . 0000 mg/l
AL (1/1 . 8 mg/1) : 1000 . 00 ug/l
Upstream NH3 Conc. : 220 . 0000 ug/l
Design Flow: 8 . 0000 MGD
Predicted NH3 Downstream: 147 . 06 ug/l
0 . 147058 mg/l
NH3 Limit : 2572 .580 ug/l
2 . 572580 mg/l

gastonia-sf catawba r.
AMMONIA ANALYSIS
7Q10 : 121 . 0000 cfs
NH3 Effl . Conc: 0 . 0000 mg/l
AL (1/1 . 8 mg/1) : 1000 . 00 ug/l
Upstream NH3 Conc. : 220 . 0000 ug/l
Design Flow: ' 8 . 0000 MGD
Predicted NH3 Downstream: 199 .55 ug/1
0 . 199550 mg/l
NH3 Limit : 8611 .290 ug/1
8 . 611290 mg/l
AMMONIA ANALYSIS (WINTER)
7Q10 : 223. 0000 cfs
NH3 Effl . Conc: 0 . 0000 mg/l
AL (1/1 . 8 mg/1) : 1800 . 00 ug/l
Upstream NH3 Conc. : 220 . 0000 ug/l
Design Flow: 8 . 0000 MGD
Predicted NH3 Downstream: 208 . 41 ug/l
0 .208411 mg/l
NH3 Limit : 30214 . 51 ug/l
30 .21451 mg/l

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SUMMER
GASTONIA WWTP @ 8 MGD, NH3 TOX
LIMIT OF 2 . 4 MG/L, BOD5=30
------------- MODEL RESULTS ----------
Discharger : PROPOSED GASTONIA-S F CATAWBA
Receiving Stream : SOUTH FORK CATAWBA RIVER
----------------------------------------------------------------------
The End D.O. is 6. 78 mg/l .
The End CBOD is 10 . 32 mg/l .
The End NBOD is 1 . 88 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 . 84 0 . 65 2
Reach 1 45 . 00 90 . 00 0 . 00 0 . 05000
Reach 2 60 . 00 10 . 80 5 . 00 8 . 00000
Reach 3 0 . 00 0 . 00 0 . 00 0 . 00000
Reach 4 273 . 00 0 . 00 0 . 00 0 .30000
Reach 5 45 . 00 90 . 00 0 . 00 0 . 60000
Reach 6 297 .20 0 . 00 0 . 00 1 . 00000
Reach 7 45 . 00 90 . 00 0 . 00 0 . 00090

Y
it M
*** MODEL SUMMARY DATA ***
Discharger : PROPOSED GASTONIA-S F CATAWBA Subbasin 030836
Receiving Stream : SOUTH FORK CATAWBA RIVER Stream Class : WSIII
Summer 7Q10 : 121 . 0 Winter 7Q10 : 223 . 0
Design Temperature: 26. 0
ILENGTHI SLOPEI VELOCITY I DEPTHI Kd I Kd I Ka I Ka 1 KN I
I mile I ft/miI fps I ft Idesignl @201,� Idesignl @201h Idesignl
---------------------------------------------------------------------------------
I I I I I 1 I I I I
Segment 1 1 0 . 101 4 . 50I 0 .214 1 2 . 79 1 0 . 28 1 0 . 21 1 0 . 97 1 0 . 851 0 . 48 1
Reach 1 1 1 1 1 1 1 1 1 1 1
--------------------------------------------------------------------------------
I I I I I I I I I I
Segment 1 1 0 .551 4 .501 0 .289 1 2 . 94 1 0 .28 1 0 .21 1 1 . 31 1 1 . 151 0 . 48 1
Reach 2 1 1 1 1 1 1 1 1 1 1
----------------------------------------------------------------------------------
1 l I I I I I I I I
Segment 1 1 1 . 801 4 .501 0 . 625 13 .77 1 0 .29 1 0 . 22 1 2 . 82 1 2 . 471 0 .48 1
Reach 3 1 1 1 1 1 1 1 1 1 1
---------------------------------------------------------------------------------
I I I I 1 I I 1 I I
Segment 1 1 2 . 301 4 . 501 0 . 626 1 3 . 78 1 0 .29 1 0 .22 1 2 . 83 1 2 . 481 0 . 48 1
Reach 4 I I 1 1 1 1 1 1 1 1
---------------------------------__----------------------------------------------
1 I I I I I I 1 I I
Segment 1 1 0 . 701 4 . 501 0 . 630 1 3 . 78 1 0 .29 1 0 .22 1 2 . 84 1 2 . 491 0 . 48 1
Reach 5 1 1 1 1 1 1 1 1 1 1
----------------------------------------------------------------------------------
I I I I I I I I I l
Segment 1 1 0 .201 4 . 501 0 . 635 1 3 . 78 1 0 .29 1 0 .22 1 2 . 87 1 2 . 511 0 . 48 1
Reach 6 1 1 1 l 1 1 1 1 1 1
--------------------------------------------------------------------------------
I I I I I I I I I I
Segment 1 1 2 . 001 4 . 501 0 . 635 1 3 . 78 1 0 .29 1 0 .22 1 2 . 87 1 2 .511 0 . 48 1
Reach 7 1 1 1 1 1 1 1 1 1 1
--------------------------------------------------------------------------------
I Flow I CBOD I NBOD I D.O.
I cfs I mg/1 I mg/1 I mg/1 I
Segment 1 Reach 1
Waste 1 0 . 077 1 45 . 000 1 90 . 000 I 0 . 000
Headwatersl 25 . 000 1 4 . 000 1 1 . 000 1 7 . 300
Tributary 1 0 . 000 1 2 . 000 1 1 . 000 1 7 .300
* Runoff 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 300
Segment 1 Reach 2
Waste 1 12 . 400 1 60 . 000 110 . 800 1 5 . 000
Tributary 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 300
* Runoff 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 300

Segment 1 Reach 3
Waste 1 0 . 000 1 0 . 000 1 0 . 000 1 0 . 000
Tributary 1 96. 000 1 2 . 000 1 1 . 000 1 7 .300
* Runoff 1 0 . 000 1 2 . 000 1 1 . 000 1 7 .300
Segment 1 Reach 4
Waste 1 0 . 465 1273 . 000 1 0 . 000 1 0 . 000
Tributary 1 0 . 000 1 2 . 000 1 1 . 000 1 7 .300
* Runoff 1 0 . 000 1 2 . 000 I 1 . 000 1 7 . 300
Segment 1 Reach 5
Waste 1 0 . 930 1 45 . 000 1 90 . 000 1 0 . 000
Tributary 1 0 . 000 J 2 . 000 1 1 . 000 1 7 . 300
* Runoff 1 0 . 000 J 2 . 000 I 1 . 000 I 7 . 300
Segment 1 Reach 6
Waste 1 1 .550 1297 . 200 1 0 . 000 1 0 . 000
Tributary 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 300
* Runoff J 0 . 000 I 2 . 000 I 1 . 000 I 7 . 300
Segment 1 Reach 7
Waste I 0 . 001 1 45 . 000 190 . 000 I 0 . 000
Tributary 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 300
* Runoff 1 0 . 000 1 2 . 000 J 1 . 000 { 7 . 300
* Runoff flow is in cfs/mile

SUMMER
GASTONIA WWTP @ 8 MGD, NH3 TOX
LIMIT OF 2 . 4 MG/L, BOD5=30
Seg # I Reach # I Seg Mi D.O. I CBOD NBOD ' I Flow I
1 1 0 . 00 7 .28 4 . 13 1 .28 25 . 08
1 1 0 . 01 7 .27 4 . 12 1 .27 25 . 08
1 1 0 . 02 7 .27 4 . 12 1 .27 25 . 08
1 1 0 . 03 7 .27 4 . 12 1 .27 25 . 08
1 1 0 . 04 7 .27 4 . 11 1 .27 25 . 08
1 1 0 . 05 7 .26 4 . 11 1 .27 25 . 08
1 1 0 . 06 7 .26 4 . 11 1 .26 25 . 08
1 1 0 . 07 7 .26 4 . 10 1 . 26 25 . 08
1 1 0 . 08 7 .26 4 . 10 1 .26 25. 08
1 1 0 . 09 7 .25 4 . 10 1 .26 25 . 08
1 1 0 . 10 7 .25 4 . 09 1 .26 25. 08
1 2 0 . 10 6.51 22 . 59 4 . 42 37 . 48
1 2 0 . 15 6. 44 22 . 52 4 . 39 37 . 48
1 2 0 . 20 6. 37 22 . 46 4 . 37 37 . 48
1 2 0 . 25 6. 31 22 . 39 4 . 35 37 . 48
1 2 0 .30 6.25 22 . 32 4 . 33 37 . 48
1 2 0 . 35 6. 18 22 .26 4 . 31 37 . 48
1 2 0 . 40 6. 12 22 . 19 4 . 28 37 . 48
1 2 0 . 45 6. 06 22 . 13 4 . 26 37 . 48
1 2 0 .50 6. 01 22 . 06 4 . 24 37 . 48
1 2 0 .55 5 . 95 21 . 99 4 .22 37 .48
1 2 0 . 60 5 . 89 21 . 93 4 .20 37 . 48
1 2 0 . 65 5 . 84 21 . 86 4 . 18 37 .48
1 3 0 . 65 6. 89 7 .58 1 . 89 133 . 48
1 3 0 . 75 6. 89 7 . 56 1 . 88 133 . 48
1 3 0 . 85 6. 90 7 .53 1 . 87 133 . 48
1 3 0 . 95 6. 90 7 .51 1 . 87 133 . 48
1 3 1 . 05 6. 90 7 .49 1 . 86 133 . 48
1 3 1 . 15 6. 90 7 .47 1 . 85 133 . 48
1 3 1 .25 6. 91 7 . 45 1 . 84 133 . 48
1 3 1 . 35 6. 91 7 . 43 1 . 83 133 . 48
1 . 3 1 . 45 6 . 91 7 . 40 1 . 82 133 . 48
1 3 1 . 55 6. 92 7 . 38 1 . 81 133 . 48
1 3 1 . 65 6. 92 7 . 36 1 . 81 133. 48
1 3 1 . 75 6. 92 7 . 34 1 . 80 133. 48
1 3 1 . 85 6. 93 7 . 32 1 . 79 133. 48
1 3 1 . 95 6. 93 7 . 30 1 .78 133.48
1 3 2 . 05 6. 93 7 . 28 1 .77 133 .48
1 3 2 . 15 6. 94 7 .26 1 .76 133 . 48
1 3 2 . 25 6. 94 7 . 24 1 . 76 133. 48
1 3 2 . 35 6. 94 7 .22 1 . 75 133 . 48
1 3 2 . 45 6. 95 7 . 19 1 . 74 133 . 48
1 4 2 . 45 6. 92 8 . 12 1 . 73 133 . 94
1 4 2 .55 6. 92 8 . 09 1 .73 133 . 94
1 4 2 . 65 6. 92 8 . 07 1 .72 133 . 94
1 4 2 . 75 6. 93 8 . 05 1 .71 133 . 94
1 4 2 . 85 6. 93 8 . 02 1 .70 133 . 94
1 4 2 . 95 6. 93 8 . 00 1 . 69 133 . 94
1 4 3 . 05 6. 93 7 . 98 1 . 69 133 . 94
1 4 3 . 15 6 . 93 7 . 96 1 . 68 133 . 94
1 4 3 . 25 6 . 94 7 . 93 1 . 67 133 . 94
1 4 3 .35 6. 94 7 . 91 1 . 66 133 . 94
1 4 3 . 45 6. 94 7 . 89 1 . 66 133 . 94
1 4 3 .55 6. 94 7 . 86 1 . 65 133 . 94
1 4 3 . 65 6. 94 7 . 84 1 . 64 133 . 94
1 4 3 .75 6. 94 7 . 82 1 . 63 133. 94

L
1 4 3 . 85 6 . 95 7 . 80 1 . 62 133 . 94
1 4 3 . 95 6. 95 7 .77 1 . 62 133 . 94
1 4 4 . 05 6. 95 7 . 75 1 . 61 133 . 94
1 4 4 . 15 6. 95 7 . 73 1 . 60 133 . 94
1 4 4 .25 6. 96 7 . 71 1 . 59 133 . 94
1 4 4 . 35 6. 96 7 . 69 1 . 59 133 . 94
1 4 4 . 45 6. 96 7 . 66 1 . 58 133 . 94
1 4 4 .55 6. 96 7 . 64 1 . 57 133 . 94
1 4 4 . 65 6. 97 7 . 62 1 .57 133 . 94
1 4 4 . 75 6. 97 7 . 60 1 .56 133. 94
1 5 4 . 75 6. 92 7 . 86 2 . 17 134 . 87
1 5 4 . 85 6. 92 7 . 83 2 . 16 134 . 87
1 5 4 . 95 6 . 92 7 . 81 2 . 15 134 . 87
1 5 5 . 05 6. 92 7 . 79 2 . 14 134 . 87
1 5 5 . 15 6. 92 7 . 77 2 . 13 134 . 87
1 5 5 .25 6. 92 7 . 74 2 . 12 134 . 87
1 5 5 . 35 6. 92 7 . 72 2 . 11 134 . 87
1 5 5 . 45 6. 92 7 . 70 2 . 10 134 . 87
1 6 5 . 45 6. 85 10 . 99 2 . 08 136. 42
1 6 5 . 47 6. 84 10 . 98 2 . 07 136. 42
1 6 5 . 49 6. 84 10 . 98 2 . 07 136. 42
1 6 5 .51 6. 84 10 . 97 2 . 07 136. 42
1 6 5 .53 6. 84 10 . 96 2 . 07 136 . 42
1 6 5 .55 6. 84 10 . 96 2 . 07 136 .42
1 6 5 .57 6. 84 10 . 95 2 . 06 136 . 42
1 6 5 .59 6. 84 10 . 95 2 . 06 136 .42
1 6 5 . 61 6. 84 10 . 94 2 . 06 136. 42
1 6 5 . 63 6. 84 10 . 93 2 . 06 136. 42
1 6 5 . 65 6. 83 10 . 93 2 . 06 136. 42
1 7 5 . 65 6. 83 10 . 93 2 . 06 136. 42
1 7 5 . 75 6. 83 10 . 90 2 . 05 136 . 42
1 7 5 . 85 6. 82 10 . 87 2 . 04 136 . 42
1 7 5 . 95 6. 82 10 . 84 2 . 03 136. 42
1 7 6. 05 6. 82 10 . 80 2 . 02 136. 42
1 7 6. 15 6. 81 10 .77 2 . 01 136. 42
1 7 6.25 6. 81 10 .74 2 . 00 136. 42
1 7 6. 35 6 . 80 10 . 71 1 . 99 136. 42
1 7 6. 45 6. 80 10 . 68 1 . 98 136. 42
1 7 6. 55 6. 80 10 . 65 1 . 97 136. 42
1 7 6 . 65 6. 79 10 . 62 1 . 97 136. 42
1 7 6.75 6. 79 10 .59 1 . 96 136. 42
1 7 6. 85 6. 79 10 . 56 1 . 95 136. 42
1 7 6. 95 6. 79 10 .53 1 . 94 136. 42
1 7 7 . 05 6. 78 10 . 50 1 . 93 136. 42
1 7 7 . 15 6. 78 10 . 47 1 . 92 136. 42
1 7 7 . 25 6 .78 10 . 44 1 . 91 136. 42
1 7 7 . 35 6.78 10 . 41 1 . 90 136. 42
1 7 7 . 45 6.78 10 . 38 1 . 89 136 .42
1 7 7 .55 6. 78 10 . 35 1 . 89 136. 42
1 7 7 . 65 6.78 10 . 32 1 . 88 136. 42
Seg # Reach # Seg Mi D.O. CBOD NBOD Flow

� SUMMER
GASTONIA WWTP @ 8 MGD, NH3 TOX
LIMIT OF 2 .,f MG/L, BOD5=30
----------- MODEL RESULTS ----------
Discharger : PROPOSED GASTONIA-S F CATAWBA
Receiving Stream : SOUTH FORK CATAWBA RIVER
----------------------------------------------------------------------
The End D.O. is 6. 80 mg/l .
The End CBOD is 10 . 04 mg/l .
The End NBOD is 1 . 88 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. 89 0 . 65 2
Reach 1 45. 00 90 . 00 0 . 00 0 . 05000
Reach 2 60 . 00 10 . 80 5 . 00 8 . 00000
Reach 3 0 . 00 0 . 00 0 . 00 0 . 00000
Reach 4 273 . 00 0 . 00 0 . 00 0 . 30000
Reach 5 45. 00 90 . 00 0 . 00 0 . 60000
Reach 6 297 .20 0 . 00 0 . 00 1 . 00000
Reach 7 45. 00 90 . 00 0 . 00 0 . 00090

*** MODEL SUMMARY DATA ***
Discharger : PROPOSED GASTONIA-S F CATAWBA Subbasin 030836
Receiving Stream : SOUTH FORK CATAWBA RIVER Stream Class: WSIII
Summer 7Q10 : 121 . 0 Winter 7Q10 : 223 . 0
Design Temperature: 26. 0
ILENGTHI SLOPEI VELOCITY I DEPTHI Kd I Kd I Ka I Ka I KN I
I mile I ft/miI fps I ft Idesignl @201,� Idesignl @2016 Idesignl
-------------------------------_----_----------------------------------------------
I I I I I I I I I I
Segment 1 1 0 . 101 4 . 501 0 .214 1 2 . 79 1 0 . 28 1 0 .21 1 0 . 97 1 0 . 851 0 . 48 1
Reach 1 1 1 1 1 1 1 1 1 1 1
----------------------------------------------------------------------------------
I I I I I I I I I I
Segment 1 1 0 .551 4 . 501 0 .289 12 . 94 1 0 .28 1 0 .21 1 1 . 31 1 1 . 151 0 . 48 1
Reach 2 I 1 1 I 1 1 I 1 1 1
--------------------------------------------------------------------------------
I I I I I I I I I I
Segment 1 I 1 . 801 4 .501 0 . 625 1 3 .77 1 0 .29 1 0 . 22 1 2 . 82 1 2 . 471 0 .48 1
Reach 3 1 1 1 I 1 1 1 1 1 1
--------------------------------------------------------------------------------
I I 1 I I 1 I I I
Segment 1 1 2 . 301 4 .501 0 . 626 1 3 .78 1 0 .29 1 0 . 22 1 2 . 83 1 2 . 481 0 . 48 1
Reach 4 1 1 1 1 1 1 1 1 1 1
------------------------------------------------------------------------------------
I I I I I 1 I I I
Segment 1 1 0 . 701 4 .501 0 . 630 1 3 .78 1 0 . 29 1 0 .22 1 2 . 84 1 2 . 491 0 . 48 1
Reach 5 1 1 1 1 1 1 1 1 1 1
---------------------------------------------------------------------------------
I I I I I I I I I
Segment 1 1 0 . 201 4 . 501 0 . 635 1 3 . 78 1 0 .29 1 0 .22 1 2 . 87 1 2 .511 0 . 48 1
Reach 6 1 1 1 1 1 1 l 1 1 1
--------------------------------------------------------------------------------
I I I I I I I I I
Segment 1 1 2 . 001 4 .501 0 . 635 1 3 . 78 10 .29 1 0 .22 1 2 . 87 1 2 .511 0 . 48 1
Reach 7 1 1 I l 1 1 1 1 1 1
-----------------•------------------------_-------_---------------------------------
I Flow I CBOD I NBOD I D.O. I
I cfs I mg/l I mg/l I mg/1 I
Segment 1 Reach 1
Waste I 0 . 077 1 45 . 000 1 90 . 000 I 0 . 000
Headwatersl 25 . 000 1 ' 2 . 000 I ' 1 . 000 1 7 . 300
Tributary 1 0 . 000 I 2 . 000 1 1 . 000 1 7 . 300
* Runoff 1 0 . 000 1 2 . 000 1 1 . 000 I 7 .300
Segment 1 Reach 2
Waste 1 12 . 400 160 . 000 1 10 . 800 1 5. 000
Tributary 1 0 . 000 1 2 . 000 I 1 . 000 1 7 .300
* Runoff 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 300

Segment 1 Reach 3
Waste J 0 . 000 1 0 . 000 1 0 . 000 1 0 . 000
Tributary 1 96. 000 1 2 . 000 1 1 . 000 1 7 . 300
* Runoff 1 0 . 000 1 2 . 000 1 1 . 000 1 7 .300
Segment 1 Reach 4
Waste 1 0 . 465 1273 . 000 1 0 . 000 1 0 . 000
Tributary 1 0 . 000 1 2 . 000 1 1 . 000 1 7 .300
* Runoff 1 0 . 000 1 2 . 000 1 1 . 000 1 7 .300
Segment 1 Reach 5
Waste 1 0 . 930 1 45. 000 1 90 . 000 1 0 . 000
Tributary 1 0 . 000 1 2 . 000 J 1 . 000 1 7 .300
* Runoff 1 0 . 000 I 2 . 000 J 1 . 000 1 7 . 300
Segment 1 Reach 6
Waste 1 1 .550 1297 .200 1 0 . 000 1 0 . 000
Tributary 1 0 . 000 1 2 . 000 1 1 . 000 1 7 .300
* Runoff 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 300
Segment 1 Reach 7
Waste 1 0 . 001 1 45. 000 1 90 . 000 1 0 . 000
Tributary 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 300
* Runoff 1 0 . 000 1 2 . 000 1 1 . 000 1 7 .300
* Runoff flow is in cfs/mile

SUMMER
GASTONIA WWTP @ 8 MGD, NH3 TOX
LIMIT OF 2 .,f MG/L, BOD5=30
J Seg # I Reach # 1 Seg Mi D.O. I CBOD NBOD I Flow J
1 1 0 . 00 7 .28 2 . 13 1 .28 25 . 08
1 1 0 . 01 7 .28 2 . 13 1 .27 25 . 08
1 1 0 . 02 7 .28 2 . 13 1 .27 25 . 08
1 1 0 . 03 7 .27 2 . 13 1 .27 25 . 08
1 1 0 . 04 7 .27 2 . 13 1 .27 25 . 08
1 1 0 . 05 7 .27 2 . 12 1 .27 25 . 08
1 1 0 . 06 7 .27 2 . 12 1 .26 25 . 08
1 1 0 . 07 7 .27 2 . 12 1 .26 25 . 08
1 1 0 . 08 7 .27 2 . 12 1 .26 25. 08
1 1 0 . 09 7 .27 2 . 12 1 .26 25. 08
1 1 0 . 10 7 . 27 2 . 12 1 .26 25. 08
1 2 0 . 10 6. 52 21 .27 4 . 42 37 .48
1 2 0 . 15 6. 45 21 .20 4 . 39 37 . 48
1 2 0 .20 6. 39 21 . 14 4 . 37 37 . 48
1 2 0 .25 6. 33 21 . 08 4 . 35 37 . 48
1 2 0 . 30 6 .27 21 . 02 4 . 33 37 . 48
1 2 0 . 35 6 .21 20 . 95 4 . 31 37 . 48
1 2 0 . 40 6. 16 20 . 89 4 . 28 37 . 48
1 2 0 . 45 6. 10 20 . 83 4 . 26 37 . 48
1 2 0 .50 6. 04 20 .77 4 .24 37 .48
1 2 0 .55 5 . 99 20 .71 4 .22 37 . 48
1 2 0 . 60 5 . 94 20 . 64 4 .20 37 . 48
1 2 0 . 65 5. 89 20 .58 4 . 18 37 . 48
1 3 0 . 65 6. 90 7 .22 1 . 89 133 . 48
1 3 0 . 75 6. 91 7 .20 1 . 88 133 . 48
1 3 0 . 85 6. 91 7 . 18 1 . 87 133 . 48
1 3 0 . 95 6. 91 7 . 16 1 . 87 133 . 48
1 3 1 . 05 6 . 92 7 . 13 1 . 86 133 . 48
1 3 1 . 15 6. 92 7 . 11 1 . 85 133 . 48
1 3 1 . 25 6. 92 7 . 09 1 . 84 133 . 48
1 3 1 . 35 6. 93 7 . 07 1 . 83 133 . 48
1 3 1 . 45 6. 93 7 . 05 1 . 82 133 . 48
1 3 1 . 55 6. 94 7 . 03 1 . 81 133 . 48
1 3 1 . 65 6. 94 7 . 01 1 . 81 133 . 48
1 3 1 . 75 6. 94 6. 99 1 . 80 133 . 48
1 3 1 . 85 6 . 95 6. 97 1 . 79 133. 48
1 3 1 . 95 6 . 95 6. 95 1 . 78 133. 48
1 3 2 . 05 6. 95 6. 93 1 . 77 133 . 48
1 3 2 . 15 6. 96 6. 91 1 .76 133. 48
1 3 2 . 25 6. 96 6. 89 1 . 76 133. 48
1 3 2 . 35 6. 97 6. 87 1 .75 133 . 48
1 3 2 . 45 6. 97 6. 85 1 . 74 133 . 48
1 4 2 . 45 6. 94 7 . 78 1 . 73 133 . 94
1 4 2 . 55 6. 95 7 . 75 1 .73 133 . 94
1 4 2 . 65 6. 95 7 .73 1 .72 133 . 94
1 4 2 . 75 6. 95 7 .71 1 . 71 133 . 94
1 4 2 . 85 6 . 95 7 . 69 1 . 70 133 . 94
1 4 2 . 95 6. 95 7 . 67 1 . 69 133 . 94
1 4 3 . 05 6. 96 7 . 64 1 . 69 133 . 94
1 4 3 . 15 6 . 96 7 . 62 1 . 68 133 . 94
1 4 3 . 25 6. 96 7 . 60 1 . 67 133. 94
1 4 3 . 35 6. 96 7 .58 1 . 66 133 . 94
1 4 3 . 45 6 . 96 7 .56 1 . 66 133 . 94
1 4 3 . 55 6. 97 7 .53 1 . 65 133 . 94
1 4 3 . 65 6. 97 7 . 51 1 . 64 133 . 94
1 4 3 . 75 6. 97 7 . 49 1 . 63 133 . 94

1 4 3 . 85 6. 97 7 . 47 1 . 62 133 . 94
1 4 3 . 95 6. 98 7 .45 1 . 62 133. 94
1 4 4 . 05 6. 98 7 .43 1 . 61 133. 94
1 4 4 . 15 6. 98 7 .41 1 . 60 133 . 94
1 4 4 .25 6. 98 7 . 38 1 .59 133. 94
1 4 4 . 35 6. 99 7 . 36 1 . 59 133 . 94
1 4 4 . 45 6. 99 7 . 34 1 . 58 133 . 94
1 4 4 .55 6. 99 7 . 32 1 . 57 133 . 94
1 4 4 . 65 6. 99 7 . 30 1 . 57 133 . 94
1 4 4 . 75 7 . 00 7 .28 1 . 56 133 . 94
1 5 4 . 75 6. 95 7 .54 2 . 17 134 . 87
1 5 4 . 85 6. 95 7 . 52 2 . 16 134 . 87
1 5 4 . 95 6. 95 7 .50 2 . 15 134 . 87
1 5 5 . 05 6. 95 7 .48 2 . 14 134 . 87
1 5 5 . 15 6. 95 7 . 45 2 . 13 134 . 87
1 5 5 .25 6. 95 7 . 43 2 . 12 134 . 87
1 5 5 . 35 6. 95 7 . 41 2 . 11 134 . 87
1 5 5 . 45 6. 95 7 . 39 2 . 10 134 . 87
1 6 5 . 45 6. 87 10 . 68 2 . 08 136. 42
1 6 5 . 47 6. 87 10 . 68 2 . 07 136. 42
1 6 5 . 49 6. 87 10 . 67 2 . 07 136. 42
1 16 5 .51 6. 87 10 . 66 2 . 07 136. 42
1 6 5 .53 6. 87 10 . 66 2 . 07 136. 42
1 6 5 . 55 6 . 87 10 . 65 2 . 07 136. 42
1 6 5 . 57 6 . 87 10 . 65 2 . 06 136. 42
1 6 5. 59 6. 87 10 . 64 2 . 06 136. 42
1 6 5 . 61 6. 87 10 . 63 2 . 06 136. 42
1 6 5 . 63 6. 86 10 . 63 2 . 06 136. 42
1 6 5. 65 6. 86 10 . 62 2 . 06 136. 42
1 7 5 . 65 6. 86 10 . 62 2 . 06 136. 42
1 7 5. 75 6. 86 10 .59 2 . 05 136. 42
1 7 5 . 85 6. 85 10 .56 2 . 04 136. 42
1 7 5 . 95 6. 85 10 . 53 2 . 03 136 . 42
1 7 6 . 05 6. 84 10 . 50 2 . 02 136 .42
1 7 6. 15 6. 84 10 .47 2 . 01 136. 42
1 7 6.25 6. 84 10 .44 2 . 00 136. 42
1 7 6. 35 6. 83 10 . 41 1 . 99 136. 42
1 7 6. 45 6 . 83 10 . 38 1 . 98 136. 42
1 7 6.55 6. 83 10 . 36 1 . 97 136. 42
1 7 6. 65 6. 82 10 . 33 1 . 97 136. 42
1 7 6 . 75 6. 82 10 . 30 1 . 96 136 . 42
1 7 6 . 85 6. 82 10 .27 1 . 95 136 . 42
1 7 6. 95 6. 82 10 .24 1 . 94 136 . 42
1 7 7 . 05 6. 81 10 . 21 1 . 93 136. 42
1 7 7 . 15 6. 81 10 . 18 1 . 92 136. 42
1 7 7 . 25 6. 81 10 . 15 1 . 91 136. 42
1 7 7 . 35 6 . 81 10 . 12 1 . 90 136. 42
1 7 7 . 45 6. 81 10 . 09 1 . 89 136 . 42
1 7 7 .55 6. 81 10 . 07 1 . 89 136. 42
1 7 7 . 65 6. 80 10 . 04 1 . 88 136. 42
{ Seg # Reach # { Seg Mi { D .O. { CBOD { NBOD Flow {

SUMMER
S F CATAWBA R MODEL W/O PROP .
GASTONIA WWTP @ 25 CFS MIN REL
---------- MODEL RESULTS ----------
Discharger : PROPOSED GASTONIA-S F CATAWBA
Receiving Stream : SOUTH FORK CATAWBA RIVER
----------------------------------------------------------------------
The End D.O. is 7 . 25 mg/l .
The End CBOD is 6.55 mg/l .
The End NBOD is 1 . 30 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 7 . 13 0 . 65 2
Reach 1 45 . 00 90 . 00 0 . 00 0 . 05000
Reach 2 0 . 00 0 . 00 0 . 00 0 . 00000
Reach 3 0 . 00 0 . 00 0 . 00 0 . 00000
Reach 4 273 . 00 0 . 00 0 . 00 0 . 30000
Reach 5 45 . 00 90 . 00 0 . 00 0 . 60000
Reach 6 297 .20 0 . 00 0 . 00 1 . 00000
Reach 7 45 . 00 90 . 00 . 0 . 00 0 . 00090

*** MODEL SUMMARY DATA ***
Discharger : PROPOSED GASTONIA-S F CATAWBA Subbasin 030836
Receiving Stream : SOUTH FORK CATAWBA RIVER Stream Class: WSIII
Summer 7Q10 : 121 . 0 Winter 7Q10 : 223 . 0
Design Temperature: 26. 0
ILENGTHI SLOPEI VELOCITY I DEPTHI Kd I Kd I Ka I Ka I KN I
I mile I ft/mi1 fps I ft Idesignl @204� Idesignl @20;� Idesignl
--------------------------------------------------------------------------------
I I I I I I I I I I
Segment 1 1 0 . 101 4 . 501 0 .214 1 2 . 79 1 0 . 28 1 0 .21 1 0 . 97 1 0 . 85I 0 . 48 1
Reach 1 1 1 1 1 1 1 1 1 1 1
--------------------------------------------------------------------------------
I I I I I I I I I I
Segment 1 1 0 .55I 4 .501 0 .214 1 2 . 79 1 0 .28 1 0 .21 1 0 . 97 1 0 . 851 0 . 48 1
Reach 2 1 1 1 1 1 1 1 1 1 1
----------------------------------------------------------------------------------
I I I I I I I I I I
Segment 1 1 1 . 801 4 .501 0 . 581 1 3 .73 1 0 .29 1 0 . 22 1 2 . 62 1 2 . 301 0 .48 1
Reach 3 1 1 I 1 1 1 1 1 1 1
----------------------------------------------------------------------------------
I I I I I I I I I I
Segment 1 1 2 . 30I 4 .501 0 .582 1 3. 73 1 0 .29 1 0 .22 1 2 . 63 1 2 . 311 0 .48 1
Reach 4 1 1 1 1 1 1 1 1 l 1
------------------------------------------------------------------------------------
I I I I I I I I I I
Segment 1 1 0 . 701 4 .501 0 .586 13 .73 1 0 . 29 1 0 .22 1 2 . 64 1 2 . 321 0 . 48 1
Reach 5 1 1 1 1 1 1 1 1 1 1
--------------------------------------------------------------------------------
I I I I I I I I I I
Segment 1 1 0 .201 4 .501 0 .591 1 3 . 74 1 0 .29 1 0 .22 1 2 . 67 1 2 . 341 0 . 48 1
.Reach 6 I 1 1 1 1 1 1 1 1 1
--------------------------------------------------------------------------------
Segment 1 1 2 . 001 4 .501 0 .591 1 3 . 74 1 0 .29 1 0 .22 1 2 . 67 1 2 . 341 0 . 48 1
Reach 7 1 1 1 I 1 1 1 1 1 1
-------------------------------------------------------------------_--------------
I Flow I CBOD I NBOD I D.O.
I cfs I mg/l I mg/1 1 mg/l I
Segment 1 Reach 1
Waste 1 0 . 077 1 45 . 000 1 90 . 000 1 0 . 000
Headwatersl' 25 . 000, E 4 . 000 1 1 . 000 1 7 .300
Tributary 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 300
* Runoff 1 0 . 000 I 2 . 000 1 1 . 000 1 7 . 300
Segment 1 Reach 2
Waste 1 0 . 000 1 0 . 000 1 0 . 000 1 0 . 000
Tributary 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 300
* Runoff 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 300

Segment 1 Reach 3
Waste I 0 . 000 1 0 . 000 I 0 . 000 I 0 . 000
Tributary 1 96. 000 1 2 . 000 1 1 . 000 1 7 .300
* Runoff I 0 . 000 1 2 . 000 1 1 . 000 1 7 .300
Segment 1 Reach 4
Waste 1 0 . 465 1273 . 000 1 0 . 000 1 0 . 000
Tributary 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 300
* Runoff 1 0 . 000 I 2 . 000 I 1 . 000 I 7 . 300
Segment 1 Reach 5
Waste 1 0 . 930 145. 000 190 . 000 I 0 . 000
Tributary 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 300
* Runoff 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 300
Segment 1 Reach 6
Waste 1 1 . 550 1297 .200 1 0 . 000 1 0 . 000
Tributary 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 300
* Runoff 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 300
Segment 1 Reach 7
Waste 1 0 . 001 1 45. 000 190 . 000 1 0 . 000
Tributary 1 0 . 000 1 2 . 000 I 1 . 000 I 7 . 300
* Runoff I 0 . 000 I 2 . 000 I 1 . 000 I 7 . 300
* Runoff flow is in cfs/mile

SUMMER
S F CATAWBA R MODEL W/O PROP .
GASTONIA WWTP @ 25 CFS MIN REL
Seg # I Reach # I Seg Mi D.O. I CBOD I NBOD I Flow
1 1 0 . 00 7 .28 4 . 13 1 .28 25 . 08
1 1 0 . 01 7 .27 4 . 12 1 .27 25 . 08
1 1 0 . 02 7 .27 4 . 12 1 .27 25 . 08
1 1 0 . 03 7 .27 4 . 12 1 .27 25 . 08
1 1 0 . 04 7 .27 4 . 11 1 .27 25 . 08
1 1 0 . 05 7 .26 4 . 11 1 .27 25 . 08
1 1 0 . 06 7 .26 4 . 11 1 .26 25 . 08
1 1 0 . 07 7 .26 4 . 10 1 .26 25 . 08
1 1 0 . 08 7 .26 4 . 10 1 .26 25 . 08
1 1 0 . 09 7 .25 4 . 10 1 .26 25 . 08
1 1 0 . 10 7 .25 4 . 09 1 . 26 25 . 08
1 2 0 . 10 7 .25 4 . 09 1 .26 25 . 08
1 2 0 . 15 7 . 24 4 . 08 1 .25 25. 08
1 2 0 .20 7 .23 4 . 06 1 .24 25 . 08
1 2 0 .25 7 . 21 4 . 05 1 .23 25 . 08
1 2 0 . 30 7 . 20 4 . 03 1 .22 25 . 08
1 2 0. 35 7. 19 4 . 01 1 .22 25 . 08
1 2 0 . 40 7 . 18 4 . 00 1 .21 25 . 08
1 2 0 .45 7 . 17 3 . 98 1 .20 25 . 08
1 2 0 .50 7 . 16 3 . 97 1 . 19 25 . 08
1 2 0 .55 7 . 15 3. 95 1 . 18 25. 08
1 2 0 . 60 7 . 14 3 . 93 1 . 18 25 . 08
1 2 0 . 65 7 . 13 3 . 92 1 . 17 25 . 08
1 3 0 . 65 7 .26 2 . 40 1 . 03 121 . 08
1 3 0 . 75 7 .27 2 . 39 1 . 03 121 . 08
1 3 0 . 85 7 .28 2 . 38 1 . 02 121 . 08
1 3 0 . 95 7 . 30 2 . 38 1 . 02 121 . 08
1 3 1 . 05 7 . 31 2 . 37 1 . 01 121 . 08
1 3 1 . 15 7 . 31 2 . 36 1 . 01 121 . 08
1 3 1 .25 7 . 32 2 .35 1 . 00 121 . 08
1 3 1 . 35 7 . 33 2 .35 1 . 00 121 . 08
1 3 1 . 45 7 . 34 2 . 34 0 . 99 121 . 08
1 3 1 .55 7 .35 2 . 33 0 . 99 121 . 08
1 3 1 . 65 7 .36 2 . 32 0 . 98 121 . 08
1 3 1 . 75 7 . 37 2 . 32 0 . 98 121 . 08
1 3 1 . 85 7 . 38 2 .31 0 . 97 121 . 08
1 3 1 . 95 7 . 39 2 .30 0 . 97 121 . 08
1 3 2 . 05 7 . 39 2 . 30 0 . 96 121 . 08
1 3 2 . 15 7 . 40 2 .29 0 . 96 121 . 08
1 3 2. 25 7. 41 2 . 28 0. 95 121. 08
1 3 2 . 35 7 .42 2 .28 0 . 95 121 . 08
1 3 2 . 45 7 .42 2 .27 0 . 95 121 . 08
1 4 2 . 45 7 . 39 3. 30 0 . 94 121 .54
1 4 2 . 55 7 . 40 3.29 0 . 94 121 .54
1 4 2 . 65 7 . 40 3 .28 0 . 93 121 .54
1 4 2 . 75 7 . 41 3 .27 0 . 93 121 .54
1 4 2 . 85 7 . 41 3 .26 0 . 92 121 .54
1 4 2 . 95 7 . 42 3 .25 0 . 92 121 .54
1 4 3 . 05 7 . 42 3 .24 0 . 91 121 .54
1 4 3 . 15 7 .43 3 .23 0 . 91 121 .54
1 4 3 . 25 7 . 43 3. 22 0 . 90 121 .54
1 4 3 . 35 7 . 44 3 .21 0 . 90 121 .54
1 4 3 . 45 7 .44 3 .20 0 . 90 121 . 54
1 4 3 . 55 7 . 44 3. 19 0 . 89 121 .54
1 4 3 . 65 7 . 45 3 . 18 0 . 89 121 . 54
1 4 3 . 75 7 .45 3 . 17 0 . 88 121 . 54

1 4 3. 85 7 .46 3 . 16 0 . 88 121 . 54
1 4 3 . 95 7 . 46 3 . 16 0 . 87 121 .54
1 4 4 . 05 7 . 46 3 . 15 0 . 87 121 .54
1 4 4 . 15 7 . 47 3 . 14 0 . 87 121 .54
1 4 4 .25 7 . 47 3 . 13 0 . 86 121 .54
1 4 4 . 35 7 . 47 3 . 12 0 . 86 121 .54
1 4 4 . 45 7 . 48 3 . 11 0 . 85 121 .54
1 4 4 . 55 7 . 48 3 . 10 0 . 85 121 .54
1 4 4 . 65 7 .49 3 . 09 0 . 84 121 .54
1 4 4 . 75 7 . 49 3 . 08 0 . 84 121 .54
1 5 4 . 75 7 .43 3 . 40 1 .52 122 . 47
1 5 4 . 85 7 . 43 3 . 39 1 .51 122 . 47
1 5 4 . 95 7 . 43 3 . 38 1 .50 122 . 47
1 5 5 . 05 7 . 43 3 . 37 1 . 49 122 . 47
1 5 5 . 15 7 . 44 3 . 36 1 . 49 122 . 47
1 5 5 .25 7 . 44 3 . 35 1 . 48 122 . 47
1 5 5 . 35 7 . 44 3. 34 1 .47 122 . 47
1 5 5 . 45 7 . 44 3.33 1 . 46 122 . 47
1 6 5 . 45 7 . 35 7 . 00 1 .45 124 . 02
1 6 5 . 47 7 . 34 6. 99 1 . 45 124 . 02
1 6 5 . 49 7 . 34 6. 99 1 . 44 124 . 02
1 6 5 .51 7 . 34 6 . 99 1 . 44 124 . 02
1 6 5 .53 7 . 34 6 . 98 1 . 44 124 . 02
1 6 5 .55 7 . 34 6 . 98 1 . 44 124 . 02
1 6 5 .57 7 . 34 6. 97 1 . 44 124 . 02
1 6 5 .59 7 .34 6. 97 1 . 44 124 . 02
1 6 5 . 61 .7 . 33 6. 96 1 . 44 124 . 02
1 6 5 . 63 7 . 33 6. 96 1 . 43 124 . 02
1 6 5 . 65 7 . 33 6. 96 1 . 43 124 . 02
1 7 5 . 65 7 . 33 6. 96 1 . 43 124 . 02
1 7 5 . 75 7 . 33 6. 94 1 . 43 124 . 02
1 7 5 . 85 7 . 32 6. 91 1 . 42 124 . 02
1 7 5 . 95 7 . 31 6. 89 1 . 41 124 . 02
1 7 6. 05 7 .31 6. 87 1 . 41 124 . 02
1 7 6. 15 7 . 30 6. 85 1 . 40 124 . 02
1 7 6. 25 7 . 30 6. 83 1 . 39 124 . 02
1 7 6 . 35 7 .29 6. 81 1 . 38 124 . 02
1 7 6. 45 7 .29 6.79 1 . 38 124 . 02
1 7 6.55 7 .28 6.77 1 . 37 124 . 02
1 7 6. 65 7 .28 6. 75 1 .36 124 . 02
1 7 6. 75 7 .27 6. 73 1 . 36 124 . 02
1 7 6. 85 7 .27 6. 71 1 .35 124 . 02
1 7 6 . 95 7 .27 6. 69 1 . 34 124 . 02
1 7 7 . 05 7. 26 6. 67 1. 34 124 . 02
1 7 7 . 15 7 .26 6. 65 1 . 33 124 . 02
1 7 7 .25 7 .26 6. 63 1 . 32 124 . 02
1 7 7 . 35 7 .25 6. 61 1 .32 124 . 02
1 7 7 . 45 7 .25 6.59 1 . 31 124 . 02
1 7 7 .55 7 .25 6 .57 1 . 31 124 . 02
1 7 7 . 65 7 . 25 6.55 1 . 30 124 . 02
Seg # I Reach # I Seg Mi I D .O. I CBOD I NBOD I Flow

SUMMER
GASTONIA @ 8 MGD, NH3=2 . 4 (TOX
BOD5=30, BKGRD=2 & 1 MG/L
---------- MODEL RESULTS ----------
Discharger : PROPOSED GASTONIA-S F CATAWBA
Receiving Stream : SOUTH FORK CATAWBA RIVER
------------------------------------------------------------------------
The End D .O. is 6. 80 mg/l .
The End CBOD is 10 . 04 mg/l .
The End NBOD is 1 . 88 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 . 89 0 . 65 2
Reach 1 45 . 00 90 . 00 0 . 00 0 . 05000
Reach 2 60 . 00 10 . 80 5 . 00 8 . 00000
Reach 3 0 . 00 0 . 00 0 . 00 0 . 00000
Reach 4 273 . 00 0 . 00 0 . 00 0 .30000
Reach 5 45 . 00 90 . 00 0 . 00 0 . 60000
Reach 6 297 . 20 0 . 00 0 . 00 1 . 00000
Reach 7 45 . 00 90 . 00 0 . 00 0 . 00090

*** MODEL SUMMARY DATA ***
Discharger : PROPOSED GASTONIA-S F CATAWBA Subbasin 030836
Receiving Stream : SOUTH FORK CATAWBA RIVER Stream Class: WSIII
Summer 7Q10 : 121 . 0 Winter 7Q10 : 223 . 0
Design Temperature: 26. 0
ILENGTHI SLOPEI VELOCITY I DEPTHI Kd I Kd I Ka I Ka I KN I
I mile I ft/mil fps I ft Idesignl @201h Idesignl @20;h Idesignl
--------------------------------------------------------------------------------
I I I I I I I I I I
Segment 1 1 0 . 101 4 . 501 0 . 214 1 2 . 79 1 0 .28 1 0 . 21 1 0 . 97 1 0 . 851 0 . 48 1
Reach 1 I I I I 1 I I I I l
--------------------------------------------------------------------------------
I I I I I I I I I I
Segment 1 1 0 .551 4 . 501 0 .289 1 2 . 94 1 0 . 28 1 0 . 21 1 1 .31 1 1 . 151 0 . 48 1
Reach 2 1 1 1 1 1 1 1 1 1 1
---------------------------------------------------------------------------------
I I I I I I I I I I
Segment 1 1 1 . 801 4 .501 0 . 625 1 3. 77 1 0 .29 1 0 .22 1 2 . 82 1 2 . 471 0 . 48 1
Reach 3 1 1 1 1 1 1 1 1 1 1
-----------------------------------------------------------------------------------
1 I I I I I I I I I
Segment 1 1 2 . 301 4 . 501 0 . 626 1 3 . 78 1 0 .29 1 0 . 22 1 2 . 83 1 2 . 481 0 .48 1
Reach 4 1 1 1 1 1 1 1 1 1 1
---------------------------------------------------------------------------------
I I I I I I I I I I
Segment 1 1 0 .701 4 .501 0 . 630 1 3 . 78 1 0 .29 1 0 .22 1 2 . 84 1 2 . 491 0 .48 1
Reach 5 1 1 1 1 1 1 1 1 1 1
--------------------------------------------------------------------------------
I 1 I I I I I I I I
Segment 1 1 0 .201 4 . 501 0 . 635 1 3 . 78 1 0 . 29 1 0 .22 1 2 . 87 1 2 . 511 0 . 48 1
Reach 6 1 1 1 1 1 1 1 1 1 1
--------------------------------------------------------------------------------
I I I I I I I I I I
Segment 1 1 2 . 001 4 .501 0 . 635 1 3 .78 1 0 .29 1 0 .22 1 2 . 87 1 2 .511 0 . 48 1
Reach 7 1 1 1 1 1 1 1 1 1 1
---------------------------------------------------------------------------------
I Flow I CBOD 1 NBOD 1 D.O. 1
I cfs I mg/1 I mg/1 I mg/l I
Segment 1 Reach 1
Waste 1 0 . 077 1 45 . 000 1 90 . 000 1 0 . 000
Headwatersl 25 . 000 1 2 . 000 1 1 . 000 1 7 .300
Tributary 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 300
* Runoff 1 0 . 000 I 2 . 000 1 1 . 000 1 7 . 300
Segment 1 Reach 2
Waste 1 12 . 400 1 60 . 000 1 10 . 800 1 5 . 000
Tributary 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 300
* Runoff 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 300

Segment 1 Reach 3
Waste 1 0 . 000 1 0 . 000 1 0 . 000 1 0 . 000
Tributary 1 96. 000 1 2 . 000 1 1 . 000 1 7 . 300
* Runoff 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 300
Segment 1 Reach 4
Waste 1 0 . 465 1273 . 000 1 0 . 000 1 0 . 000
Tributary 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 300
* Runoff 1 0 . 000 1 2 . 000 1 1 . 000 1 7 .300
Segment 1 Reach 5
Waste 1 0 . 930 1 45 . 000 1 90 . 000 1 0 . 000
Tributary 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 300
* Runoff 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 300
Segment 1 Reach 6
Waste 1 1 . 550 1297 .200 1 0 . 000 1 0 . 000
Tributary 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 300
* Runoff 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 300
Segment 1 Reach 7
Waste I 0 . 001 1 45 . 000 1 90 . 000 1 0 . 000
Tributary 1 0 . 000 1 2 . 000 1 1 . 000 1 7 .300
* Runoff 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 300
* Runoff flow .is in cfs/mile

SUMMER
GASTONIA @ 8 MGD, NH3=2 .4 {TOX
BOD5=30, BKGRD=2 & 1 MG/L
Seg # I Reach # I Seg Mi { D.O. I CBOD I NBOD { Flow I
1 1 0 . 00 7 . 28 2 . 13 1 .28 25 . 08
1 1 0 . 01 7 .28 2 . 13 1 .27 25 . 08
1 1 0 . 02 7 . 28 2 . 13 1 .27 25 . 08
1 1 0 . 03 7 . 27 2 . 13 1 .27 25 . 08
1 1 0 . 04 7 .27 2 . 13 1 .27 25. 08
1 1 0 . 05 7 . 27 2 . 12 1 .27 25 . 08
1 1 0 . 06 7 .27 2 . 12 1 .26 25 . 08
1 1 0 . 07 7 .27 2 . 12 1 .26 25 . 08
1 1 0 . 08 7 .27 2 . 12 1 .26 25 . 08
1 1 0 . 09 7 .27 2 . 12 1 .26 25 . 08
1 1 0 . 10 7 .27 2 . 12 1 .26 25 . 08
1 2 0 . 10 6.52 21 .27 4 .42 37 . 48
1 2 0 . 15 6. 45 21 .20 4 .39 37 . 48
1 2 0 .20 6. 39 21 . 14 4 . 37 37 . 48
1 2 0 . 25 6. 33 21. . 08 4 .35 37 . 48
1 2 0 . 30 6. 27 21 . 02 4 . 33 37 . 48
1 2 0 . 35 6 . 21 20 . 95 4 . 31 37 . 48
1 2 0 . 40 6 . 16 20 . 89 4 .28 37 .48
1 2 0 . 45 6 . 10 20 . 83 4 .26 37 .48
1 2 0 .50 6. 04 20 . 77 4 .24 37 . 48
1 2 0 .55 5 . 99 20 . 71 4 .22 37 . 48
1 2 0 . 60 5 . 94 20 . 64 4 .20 37 . 48
1 2 0 . 65 5 . 89 20 . 58 4 . 18 37 . 48
1 3 0 . 65 6. 90 7 . 22 1 . 89 133 . 48
1 3 0 . 75 6. 91 7 .20 1 . 88 133 .48
1 3 0 . 85 6 . 91 7 . 18 1 . 87 133 .48
1 3 0 . 95 6 . 91 7 . 16 1 . 87 133 . 48
1 3 1 . 05 6 . 92 7 . 13 1 . 86 133 . 48
1 3 1 . 15 6. 92 7 . 11 1 . 85 133 . 48
1 3 1 . 25 6. 92 7 . 09 1 . 84 133 . 48
1 3 1 . 35 6 . 93 7 . 07 1 . 83 133 .48
1 3 1 . 45 6 . 93 7 . 05 1 . 82 133 .48
1 3 1 . 55 6 . 94 7 . 03 1 . 81 133 . 48
1 3 1 . 65 6 . 94 7 . 01 1 . 81 133 .48
1 3 1 . 75 6. 94 6. 99 1 . 80 133 . 48
1 3 1 . 85 6. 95 6. 97 1 . 79 133 . 48
1 3 1 . 95 6. 95 6. 95 1 . 78 133 . 48
1 3 2 . 05 6. 95 6. 93 1 .77 133 . 48
1 3 2 . 15 6. 96 6. 91 1 .76 133 . 48
1 3 2. 25 6. 96 6. 89 1 . 76 133. 48
1 3 2 . 35 6. 97 6 . 87 1 .75 133. 48
1 3 2 . 45 6. 97 6 . 85 1 .74 133. 48
1 4 2 . 45 6 . 94 7 .78 1 .73 133 . 94
1 4 2 .55 6 . 95 7 . 75 1 . 73 133 . 94
1 4 2 . 65 6. 95 7 . 73 1 . 72 133 . 94
1 4 2 . 75 6. 95 7 . 71 1 .71 133. 94
1 4 2 . 85 6. 95 7 . 69 1 .70 133 . 94
1 4 2 . 95 6. 95 7 . 67 1 . 69 133 . 94
1 4 3 . 05 6. 96 7 . 64 1 . 69 133 . 94
1 4 3 . 15 6. 96 7 . 62 1 . 68 133 . 94
1 4 3. 25 6 . 96 7 . 60 1 . 67 133 . 94
1 4 3 . 35 6 . 96 7 .58 1 . 66 133 . 94
1 4 3 . 45 6. 96 7 . 56 1 . 66 133 . 94
1 4 3. 55 6 . 97 7 .53 1 . 65 133 . 94
1 4 3 . 65 6. 97 7 .51 1 . 64 133 . 94
1 4 3 .75 6. 97 7 . 49 1 . 63 133 . 94

�1 4 3. 85 6 . 97 7 . 47 1 . 62 133 . 94
1 4 3 . 95 6. 98 7 . 45 1 . 62 133 . 94
1 4 4 . 05 6. 98 7 . 43 1 . 61 133 . 94
1 4 4 . 15 6. 98 7 . 41 1 . 60 133 . 94
1 4 4 .25 6. 98 7 . 38 1 . 59 133 . 94
1 4 4 . 35 6. 99 7 . 36 1 .59 133 . 94
1 4 4 . 45 6 . 99 7 . 34 1 .58 133 . 94
1 4 4 . 55 6 . 99 7 . 32 1 .57 133 . 94
1 4 4 . 65 6 . 99 7 . 30 1 .57 133 . 94
1 4 4 . 75 7 . 00 7 .28 1 .56 133 . 94
1 5 4 . 75 6. 95 7 .54 2 . 17 134 . 87
1 5 4 . 85 6. 95 7 .52 2 . 16 134 . 87
1 5 4 . 95 6. 95 7 .50 2 . 15 134 . 87
1 5 5 . 05 6. 95 7 . 48 2 . 14 134 . 87
1 5 5 . 15 6. 95 7 . 45 2 . 13 134 . 87
1 5 5 .25 6. 95 7 . 43 2 . 12 134 . 87
1 5 5 . 35 6. 95 7 . 41 2 . 11 134 . 87
1 5 5. 45 6 . 95 7 . 39 2 . 10 134 . 87
1 6 5 . 45 6. 87 10 . 68 2 . 08 136. 42
1 6 5 . 47 6. 87 10 . 68 2 . 07 136. 42
1 6 5. 49 6. 87 10 . 67 2. 07 136. 42
1 6 5 .51 6. 87 10 . 66 2 . 07 136. 42
1 6 5 .53 6. 87 10 . 66 2 . 07 136. 42
1 6 5 .55 6. 87 10 . 65 2 . 07 136. 42
1 6 5 .57 6. 87 10 . 65 2 . 06 136. 42
1 6 5 .59 6. 87 10 . 64 2 . 06 136. 42
1 6 5 . 61 6. 87 10 . 63 2 . 06 136 . 42
1 6 5. 63 6. 86 10 . 63 2 . 06 136. 42
1 6 5 . 65 6. 86 10 . 62 2 . 06 136. 42
1 7 5 . 65 6. 86 10 . 62 2 . 06 136. 42
1 7 5 . 75 6. 86 10 . 59 2 . 05 136. 42
1 7 5 . 85 6. 85 10 .56 2 . 04 136. 42
1 7 5 . 95 6. 85 10 .53 2 . 03 136. 42
1 7 6. 05 6. 84 10 .50 2 . 02 136.42
1 7 6. 15 6. 84 10 . 47 2 . 01 136 . 42
1 7 6. 25 6 . 84 10 . 44 2 . 00 136 . 42
1 7 6. 35 6. 83 10 . 41 1 . 99 136. 42
1 7 6. 45 6. 83 10 . 38 1 . 98 136. 42
1 7 6.55 6. 83 10 . 36 1 . 97 136. 42
1 7 6. 65 6. 82 10 . 33 1 . 97 136. 42
1 7 6. 75 6. 82 10 . 30 1 . 96 136 .42
1 7 6 . 85 6. 82 10 .27 1 . 95 136. 42
1 7 6. 95 6. 82 10 .24 1 . 94 136. 42
1 7 7 . 05 6. 81 10. 21 1. 93 136. 42
1 7 7 . 15 6. 81 10 . 18 1 . 92 136. 42
1 7 7 .25 6. 81 10 . 15 1 . 91 136. 42
1 7 7 . 35 6. 81 10 . 12 1 . 90 136. 42
1 7 7 . 45 6. 81 10 . 09 1 . 89 136 . 42
1 7 7 . 55 6 . 81 10 . 07 1 . 89 136 .42
1 7 7 . 65 6. 80 10 . 04 1 . 88 136. 42
Seg # Reach # Seg Mi D.O. CBOD NBOD Flow