NC0021873_Wasteload Allocation_19860918

NPDE!i DOCUWEMT SCANNING COVER SKEET
NPDES Permit:
NCO021873
Mayodan WWTP
Document Type:
Permit Issuance
Wasteload Allocat" lft`�
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
September 18, 1986
This document is printed on reuse paper-1gziore any
content on the rezrerse side

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Date Rec,
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33
WASTE LOAD ALLOCATION
n
Facility Name: /J� Y
nNPDES
�'Ira�u�
Date
�gl
Existing ®
Proposed O
Permit No.: /yC o o 2197 3 Pipe No.:y o/
County: /<'
Design Capacity
p.-7o
(MGD) : f� �, c� S^ Industrial (% of Flow) : O ibmestic
(% of Flow) :
Receiving Stream: _ 41 `fit" K JZ/1 Class: C Sub -Basin:
o 3 o v.Z
U
Reference USGS Quad: / 9 /l1 i J ( Please attach) Requestor: L r 5 Ci .S
Regional office
Cd5 2 U
(Guideline
limitations, if applicable, are to be listed on the back of
this form.)
Design Temp.:
Drainage Area (mi2):
Avg. Streamf low (cfs): s73
��."24(J
7Q10 (cfs) Ib - W
Winter
//3/,Z
7Q10 (cfs) ��O
30Q2 (cfs )
Location of D.C. minimum (miles below outfall):
Slope (fpm) e2 g•(p
Velocity (fps) : K1
(base e ,
per day) : , f Qr&)�ll °� , K2
(base e , oer day) : �9 (� (D �i o2.CL
,
(A) N M
PnWS
t--TV—
Effluent
Characteristics
Monthly
Average
Comments
0
55 I
0
/. (
/
Effluent :'Dnthly
Characteristics i-verage Comments
rii
v 1� _)
ation O Comments: 7 IecON1lh rO
o ation O �J
ion O J/n L�
By:��n�� ✓Yli,166A,0&hn Reviewed By: Date:

For ftWiate Iischargers, List Cwplete Guideline Limitations Uow
EEfluent
Characteristics
Monthly
Aver2ge
Maximum Daily
Average
Comments
w� ,•� �C; � is ��
kill
Grc R CAnC-
Q✓jC`� oc/1 + �,1 S .'! tit L
S
Zype of Product Produced Lbs jDay Produced 1 Effluent Guideline Reference

4
------------- WASTELOAD ALLOCATION APPROVAL. FORM
Facility Name
Type of Waste
Status
Receiving Stream
Stream Class
Subbasin
County
Regional Office
Requestor
Date of Request
Quad
Request No
: TOWN OF MAYODAN
: INDUSTRIAL/DOMESTIC
: 9XISTING
: MAYO RIVER
C
030202
ROCKINGHAM
WSRO
Drainage Area
(sq mi)
: 312.
LISA SAL.EH
Summer 7010
(cfs)
: 76.6
9/10/86
Winter 7010
(cfs)
: 136.
B19NW
Average Flow
(cfs)
: 373
Wasteflow (mgd):
5-Day BOD (mg/1):
Ammonia Nitrogen (mg/1):
Dissolved Oxygen (mg/1):
TSS (mg/1):
Fecal Coliform (#/100ml):
pH (SU):
RECOMMENDED EFFLUENT LIMITS
0.70 1.25
30 30
30 30
1000
6-9
---------------------------------- COMMENTS ------------------------------
RECOMMEND MONITORING FOR ZINC
0. ? A.6 7 - 5 oa ^05w
Af • 7% / (T/✓ st //
�a sA.re w5 )n Sow �/000 d- 6-AJ
-------------------------------------------------------------------------------------
Recommended byQ%
Reviewed by:
Tech. Support Supervisor _-�� --,�------�--
Regional Supervisor _ l✓.JCe�c_�Ss�
Permits & Engineering
Date _/ 6
:3375
& a)
Date _1 1�p
Date -owls_ 8' 6
Date joh --

MODEL RESULTS
Discharger
a
TOWN OF MAYODAN
Receiving Stream p
PllAYO RIVER
The End D.O.
is 7.84
mg/l.
The End CBOD
is 3.31
mg/1.
The End NBOD
-----------------------------------------------------------------------------
is 0.00
mg/l.
WLA
Wl...A
WLA
DO Min
CBOD
NBOD
DO
Waste Flow
(mg/1)
Milepoint Reach #
-------
(mg/1)
----
(mg/1)
(mg/1)
(mgd)
Segment 1
7.54
0.00 1
Reach 1
110
0.00
0.00
0.70000
Reach a
0
0.00
0.00
0.00000

*** MODEL SUMMARY DATA #**
Discharger : TOWN OF MAYODAN Subbas i n : 030202
Receiving Stream : MAYO RIVER Stream Class: C
Summer 7010 : 76.6 Winter 7QiO : 136.
Design Temperature: 24.
!LENGTH! SLOPE! VELOCITY 1 DEPTH! K1 1 Ki 1 K2 1 K2 : KN 1 KN 1 KNR 1 KNR 1
1 mile 1 ft/mil fps 1 ft ;design 3201 Wesign! 3201 Wesign 3201 Wesign 320°
-----------------------------------------------------------------------------------------------------
i ,
Segment 1 1 0.301 28.60: 1.080 1 2.19 1 0.68 1 0.56 129.66 1 27.191 0.00 1 0.00 0 0.00 1 0.00 1
Reach 1 1 i 1 1 1 t 11 It 1 11 It t Is
Segment 1 1 0.90: 3.001 0.563 1 3.04 1 0.45 1 0.37 1 1.62 1 1.491 0.00 1 0.00 1 0.00 0.00 t
Reach 2 11 0 1 f 1
-----------------------------------------------------------------------------------------------------
Flaw
1 CLOD ;
NBOD ;
D.O. :
1
cfs
S mg/ 1
mg/l 1
mg/1 1
Segment 1
Leach 1
Waste
1
1.085
11110.000 1
0.000 a'
0.000
Headwaters!
76.600
', 2. 000 :
0 . 000
7. 650
Tributary
:
().t_)00
Is 0.00(,) i
0. 000
c).00c:)
* Runoff
1
0.580
1 2.000 1
0.000 1
7.650
Segment 1
Reach 2
Waste
t
0. 000
t 0. . 000 1
0.000 It
0 . C)c)(_)
Tributary
1
(.').000
1 0.000 ;
0.000 0
0.000
Runoff
:
0.580
2.000 1
0.000 1
7.650
* Runoff flaw is in cfs/mile

MODEL_ RESULT.c.)
Discharger TOWN OF MAYODAN
Receiving Stream MAYO RIVER
The End D..O. is 7.75 ing/l.
The End (.-.'BOD is 4.39 mg/l..
The End NBOD is 0.00 mg/l.
WLA
WLA
WLA
DO Min CPBOD
NBOD
DO
Waste Flow
(mg/1) Milepoint Reach # (Mg/3.)
(fng /l)
(Mg/1)
(mgd)
Segment 1 7.46 0.00 1
Reach I li 0
00
0.1 00
1.25000
Reach 2 0
0.00
0.00
0.00000

V
r
*** MODEL.. SUMMARY DATA ***
Discharger : TOWN OF MAYODAN
Receiving Stream : MAYO RIVER
Summer 7Q10 : 76.6
Design Temperature: 24.
SUbb as i n : 03f.)202
Stream Class: C
Winter- 7010 : 136.
!LENGTH! SLOPE! VELOCITY : DEPTH KI 1 K1 1 K2 1 K2 1 KN 1 KN 1 KNR 1 KNR 1
file 1 ft/mil fps 1 ft !design! a201 !design! a201 Wesignt 120° idesigni D201 1
-----------------------------------------------------------------------------------------------------
Segment 1 1 0.301 28.601 1.089 1 2.19 1 0.68 1 0.56 129.91 1 27.421 0.00 1 0.00 ; 0.00 0.00
Reach 1 f 1 1 11 1 Is i 1 1 i 1 1 1
I 1 I f 1 1 1 1 1 1 ! 1 1
Segment 1 1 0.90► 3.001 0.567 1 3.05 1 0.45 1 0.37 1 1.63 t 1.501 0.00 0.00 1 0.00 1 0.00 1
Reach 2 1 1 I 1 1 i 1 1 1 i11
-----------------------------------------------------------------------------------------------------
Flow 1 CBOD 1 NBOD 1 D. O. 1
cfs mg/l 1 mg/l mg/1 1
Segment 1 'Reach i
Waste 1 1.938 1110.000 0.000 0.000
Headwaters! 76.600 1 2. f:yt" 0 i 0. 000 7.650
Tributary 1 0.000 1 0.000 1 0.000 0 i 0.000
* Runoff 1 0.580 1 2.000 1 0.000 1 7.650
Segment 1 Reach 2
Waste 1 0. o0fry
Tributary 1 0.000 i
* Runoff 1 0.580 1
2.000 1 0.000 7.650
* Runoff flow is in cfs/mile

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