NC0021857_Speculative Limits_19990614

NPDES DOCUMENT SCANNING COVER SHEET
NPDES Permit:
NC0021857
Newland WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
201 Facilities Plan
Instream Assessment (67b)
Speculative Limit
Environmental Assessment (EA)
Document Date:
June 14, 1999
This; document is printed on reuse paper - ignore any
content on the reverse side

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
Kerr T. Stevens, Director
June 14, 1999
Mr. Cecil Lewis
Public Works Supervisor
P.O.Box 429
Newland, North Carolina 28657
Dear Mr. Lewis:
tii ecr,5
eMA
NCDENR
Subject: Speculative Limits
Town of Newland
NC0021857
Avery County
This letter is in response to your request (dated April 29, 1999) for speculative effluent limits for
a proposed expansion to the Town of Newland wastewater treatment plant in Avery County. This facility
is currently permitted to discharge up to 0.32 MGD of treated wastewater to the North Toe River, a Class
C-Trout water in the French Broad River Basin (Subbasin 040306). The proposed expansion is for a
design capacity of 0.6 MGD. The proposed discharge location would remain the same, with a drainage
area of approximately 10 square miles and an estimated summer 7Q10 flow of 3.3 cfs. According to the
1995 French Broad River Basinwide Plan, no dissolved oxygen (DO) problems have been documented in
the subject subbasin, and there is no interaction between the few domestic discharges.
Based on the available information, speculative limits for the proposed expansion are presented
in Table 1 (attached). The only changes between the current permit limits and the speculative limits are:
• Increase in monthly effluent flow from 0.32 MGD to 0.6 MGD
• Change in monthly effluent ammonia limits from 6.0 mg/1 to 3.8 mg/l in summer, and
from 17 mg,/1 to 10.0 mg/1 in winter.
• Addition of weekly monitoring for dissolved oxygen in the effluent.
The speculative limits presented here are based on our understanding of the proposal and of
present environmental conditions. These speculative limits are not binding unless they become part of an
issued NPDES permit. Response to a speculative limit request does not guarantee that the Division will
issue the Town of Newland an NPDES permit modification to expand the discharge of treated wastewater
into waters of the State. Nor can we guarantee that the effluent limitations and other requirements
included in any permit will be exactly as presented here. In accordance with the North Carolina General
Statutes, the practicable waste treatment and disposal alternative with the least adverse impact on the
environment must be implemented. Non -discharge alternatives, such as spray irrigation or connection to
a regional wastewater treatment facility, are considered to be environmentally preferable to a discharge.
Therefore, prior to submittal of an NPDES permit modification, a detailed alternatives analysis must be
prepared to assure that the environmentally sound alternative was selected from the reasonably cost-
effective options. A guidance document to assist you or your consultant in preparing an engineering
alternatives analysis (EAA) is enclosed.
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled / 10% post -consumer paper

Town of Newland
Speculative Limits
Page 2
All information pertaining to this request has been sent to our Central Files for storage. If it
becomes necessary to request an NPDES permit modification, please submit a complete application
package including Short Form D, EAA, and appropriate fee. The proposed activity is considered a major
modification, which requires a fee of $215 and is subject to Public Notice.
If you have any additional questions about these limits or the NPDES application process, please
contact Tom Belnick at [phone], extension 543.
Sincerely,
David A. Goodrich
Supervisor, NPDES Unit
Water Quality Section
Enclosures: EAA Guidance, Short Form D Application
cc: Michael Calhoun, Vaughn and Melton Engineers, PO Box 16339, Asheville, NC 28816 (w/enclosure)
Asheville Regional Office, WQ (w/o enclosures)
Central Files (w/o enclosures)
NPDES Files (w/o enclosures)

A (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS- SPECULATIVE'
Permit No. NC0021857=
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from outfall serial number
001. Such discharges shall be limited and monitored by the Permittee as specified below:
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Flow
0.600 MGD
Continuous
Recording
I or E
BOD, 5 day, 20°C
30.0 mg/I
45.0 mg/I
Weekly
Composite
E,I2
Total Suspended Residue
30.0 mg/I
45.0 mg/I
Weekly
Composite
E,I2
NH3 as N (April 1 - October 31)
3.8 mg/l
Weekly
Composite
E
NH3 as N (November 1 - March 31)
10.0 mg/I
Weekly
Composite
E
Total Residual Chlorine
28 ug/I
2/Week
Grab
E
Fecal Coliform (geometric mean)
200/100 ml
400/100 ml
Weekly
Grab
E
Temperature
Daily
Grab
E
pH3
Weekly
Grab
E
Dissolved Oxygen
Weekly
Grab
E
Total Nitrogen (TN)
_
Semi-annual
Composite
E
Total Phosphorus (TP)
Semi-annual
1 Composite
E
Notes:
1 Sample locations: E - Effluent, I - Influent
2 The monthly average effluent BOD5 and TSS concentrations shall not exceed 15% of the respective influent value (i.e., 85% removal).
3 The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Vaughn & Melfon
Consulting Engineers
Post Office Box 16339
Asheville, North Carolina 28816
[phone]
FAX [phone]
April 29, 1999
Mr. Tom Belnick
North Carolina Department of
Environmental 8I Natural Resources
Division of Water Quality
Water Quality Section
P. O. Box 29535
Raleigh, NC 27626-0535
RE: Town of Newland WWTP Expansion
NPDES Permit No. NC0021857
V&M Project No. 39901-01
Dear Mr. Belnick,
The purpose of this letter is to request planning limits for the Newland Wastewater
Treatment Plant Expansion in Avery County. The proposed expansion will increase
the average plant design capacity from 0.32 MGD to 0.6 MGD. New peak design
flow will be 1.0 MGD. The location of the expansion will be at the site of the existing
plant. The outfall is located at latitude 36° 05' 20" and longitude 81 ° 56' 57".
The discharge is to the North Toe River.
Feel free to give me a call if you have any questions with regard to the above.
Sincerely,
VAUGHN 8t MELTON CONSULTING ENGINEERS
Michael A. Calhoun, PE
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Park Terrace Center • 1318-F Patton Avenue • Asheville, North Carolina 28806

SPEC uMirs EQOEN T
-svirrothrodolik,
Mockii fe,s‘ h ffO/Ok/(
IWC Calculations
Town of Newland
NC0021857
Prepared By: Tom Belnick, NPDES Unit
Enter Design Flow (MGD):
Enter s7Q10(cfs):
Enterw7Q10 (cfs):
0.6
3.3
4.8
Residual Chlorine
7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (UG/L)
UPS BACKGROUND LEVEL (U
IWC (%)
Allowable Conc. (ug/I)
Fecal Limit
(If DF >331; Monitor)
(If DF <331; Limit)
Dilution Factor (DF)
NPDES Servor/Current Versions/IWC
Ammonia (NH3 as N)
(summer)
3.3 7Q10 (CFS)
0.6 DESIGN FLOW (MGD)
0.93 DESIGN FLOW (CFS)
17.0 STREAM STD (MG/L)
0 UPS BACKGROUND LEVEL
21.99 IWC (%)
77 Allowable Conc. (mg/I)
200/100m1
4.55
Ammonia (NH3 as N)
(winter)
7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
UPS BACKGROUND LEVEL
IWC (%)
Allowable Conc. (mg/I)
3.3
0.6
0.93
1.0
0.22
21.99
3.8 x Y.5 : i7.1
4.8
0.6
0.93
1.8
0.22
16.23
10.0 Pi-C: `IS
C (fop.) e
ogle}t'i(Qffuiuo
�._ MO, 111/)- N eraie.1.1
I,,M ) e -r 3.
10.0 n(i(t,,'iMl).
ob
6/7/99

_ fda/e ex»1
:m N i lggo
•rN,d O ((pi b)
—� w�noe14014Qohold-
SUMMER A _ I
Discharger
Receiving Stream
MODEL RESULTS
: TOWN OF NEWLAND
: NORTH TOE RIVER
The End D.O. is 8.36 mg/l.
The End CBOD is 7.05 mg/l.
The End NBOD is 2.72 mg/l.
Segment 1
Reach 1
DO Min
(mg/1) Milepoint Reach #
0.00
1
WLA
CBOD
(mg/1)
WLA
NBOD
(mg/1)
45.00 17.10
f� h�ctcr
7.
Ally nl
WLA
DO Waste Flow
(mg/1) (mgd)
0.00
aI�)toi r«K 4�-. fk � RAC ff
0.60000

SUMMER
A -1-
I Seg # I Reach # I Seg Mi I D.O. I CBOD I NBOD
1 1 0.00 6.02 11.45 4.54
1 1 0.10 6.83 11.10 4.39
1 1 0.20 7.34 10.77 4.25
1 1 0.30 7.68 10.45 4.12
1 1 0.40 7.89 10.15 4.00
1 1 0.50 8.03 9.87 3.88
1 1 0.60 8.13 9.60 3.77
1 1 0.70 8.19 9.35 3.66
1 1 0.80 8.23 9.10 3.56
1 1 0.90 8.26 8.87 3.47
1 1 1.00 8.28 8.65 3.38
1 1 1.10 8.30 8.44 3.29
1 1 1.20 8.31 8.24 3.21
1 1 1.30 8.32 8.05 3.13
1 1 1.40 8.33 7.86 3.05
1 1 1.50 8.34 7.69 2.98
1 1 1.60 8.34 7.52 2.91
1 1 1.70 8.35 7.36 2.84
1 1 1.80 8.35 7.20 2.78
1 1 1.90 8.36 7.05 2.72
I Seg # I Reach # I Seg Mi I D.O. I CBOD I NBOD
(
I
Flow I
4.23
4.36
4.48
4.61
4.73
4.86
4.99
5.11
5.24
5.36
5.49
5.62
5.74
5.87
5.99
6.12
6.25
6.37
6.50
6.62
Flow I

t. A.3
*** MODEL SUMMARY DATA ***
Discharger .
Receiving Stream .
Summer 7Q10 .
Design Temperature:
TOWN OF NEWLAND
NORTH TOE RIVER
3.3
23.0
Subbasin : 040306
Stream Class: C-TROU
Winter 7Q10 : 4.8
LENGTH SLOPE VELOCITY DEPTH Kd Kd Ka Ka KN
mile ft/mi fps ft design @20° design @20° design
Segment 1
Reach 1
1.90
35.60
0.378
0.98
0.45
0.39
25.88
24.24
0.63
Flow
cfs
Segment 1 Reach 1
Waste
Headwaters
Tributary
* Runoff
0.930
3.300
0.000
1.260
CBOD NBOD D.O.
mg/1 mg/1 mg/1
45.000 17.100 0.000
2.000 1.000 7.720
2.000 1.000 7.720
2.000 1.000 7.720
* Runoff flow is in cfs/mile

(SUMMER`'
W/efriue,i/ 00 11014 ^s 1.0
MODEL RESULTS
Discharger : TOWN OF NEWLAND
Receiving Stream : NORTH TOE RIVER
The End D.O. is 8.36 mg/l.
The End CBOD is 7.05 mg/l.
The End NBOD is 2.72 mg/l.
Segment 1
Reach 1
DO Min
WLA WLA WLA
CBOD NBOD DO Waste Flow
(mg/1) Milepoint Reach # (mg/1) (mg/1) (mg/1) (mgd)
7.12
0.00 1
45.00 17.10
5.00 0.60000

s
SUMMER
yr,le
•
j Seg # I Reach #
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
I Seg # I Reach #
1
1
Seg Mi ( D.O.
0.00 7.12
0.10 7.53
0.20 7.79
0.30 7.96
0.40 8.08
0.50 8.15
0.60 8.20
0.70 8.24
0.80 8.26
0.90 8.28
1.00 8.30
1.10 8.31
1.20 8.32
1.30 8.32
1.40 8.33
1.50 8.34
1.60 8.34
1.70 8.35
1.80 8.35
1.90 8.36
Seg Mi I D.O.
1
1
CBOD
11.45
11.10
10.77
10.45
10.15
9.87
9.60
9.35
9.10
8.87
8.65
8.44
8.24
8.05
7.86
7.69
7.52
7.36
7.20
7.05
CBOD
1
1
NBOD
4.54
4.39
4.25
4.12
4.00
3.88
3.77
3.66
3.56
3.47
3.38
3.29
3.21
3.13
3.05
2.98
2.91
2.84
2.78
2.72
NBOD
1
1
Flow I
4.23
4.36
4.48
4.61
4.73
4.86
4.99
5.11
5.24
5.36
5.49
5.62
5.74
5.87
5.99
6.12
6.25
6.37
6.50
6.62
Flow I

*** MODEL SUMMARY DATA ***
fr3
Discharger :
Receiving Stream .
Summer 7Q10 .
Design Temperature:
TOWN OF NEWLAND
NORTH TOE RIVER
3.3
23.0
Subbasin : 040306
Stream Class: C-TROU
Winter 7Q10 : 4.8
LENGTH SLOPE VELOCITY DEPTH Kd Kd Ka Ka KN
mile ft/mi fps ft design C4)20° design @20° design
Segment 1
Reach 1
1.90
35.60
0.378
0.98
0.45
0.39
25.88
24.24
0.63
Flow
cfs
Segment 1 Reach 1
Waste
Headwaters
Tributary
* Runoff
0.930
3.300
0.000
1.260
CBOD NBOD D.O.
mg/1 mg/1 mg/1
45.000 17.100 5.000
2.000 1.000 7.720
2.000 1.000 7.720
2.000 1.000 7.720
* Runoff flow is in cfs/mile

MODEL RESULTS
Discharger : TOWN OF NEWLAND
Receiving Stream : NORTH TOE RIVER
The End D.O. is 10.60 mg/l.
The End CBOD is 5.95 mg/l.
The End NBOD is 5.14 mg/l.
Segment 1
Reach 1
DO Min
(mg/1) Milepoint Reach #
8.13
0.00 1
WLA WLA WLA
CBOD NBOD DO Waste Flow
(mg/1) (mg/1) (mg/1) (mgd)
45.00 45.00 0.00 0.60000

WINTER
Seg # I Reach # I Seg Mi I D.O. 1 CBOD I NBOD I Flow I
1 1 0.00 8.13 8.98 8.14 5.73
1 1 0.10 8.85 8.73 7.90 5.91
1 1 0.20 9.36 8.50 7.67 6.09
1 1 0.30 9.72 8.28 7.45 6.27
1 1 0.40 9.97 8.08 7.24 6.45
1 1 0.50 10.14 7.88 7.05 6.63
1 1 0.60 10.27 7.70 6.87 6.81
1 1 0.70 10.36 7.52 6.69 6.99
1 1 0.80 10.42 7.36 6.53 7.17
1 1 0.90 10.47 7.20 6.37 7.35
1 1 1.00 10.50 7.05 6.22 7.53
1 1 1.10 10.52 6.90 6.08 7.71
1 1 1.20 10.54 6.76 5.94 7.89
1 1 1.30 10.56 6.63 5.81 8.07
1 1 1.40 10.57 6.51 5.69 8.25
1 1 1.50 10.58 6.39 5.57 8.43
1 1 1.60 10.58 6.27 5.45 8.61
1 1 1.70 10.59 6.16 5.34 8.79
1 1 1.80 10.60 6.05 5.24 8.97
1 1 1.90 10.60 5.95 5.14 9.15
Seg # I Reach # ( Seg Mi I D.O. I CBOD I NBOD I Flow I

*** MODEL SUMMARY DATA ***
C�3
Discharger
Receiving Stream :
Summer 7Q10
Design Temperature:
TOWN OF NEWLAND
NORTH TOE RIVER
3.3
12.0
Subbasin : 040306
Stream Class: C-TROU
Winter 7Q10 : 4.8
LENGTH SLOPE VELOCITY DEPTH Kd Kd Ka Ka I KN
mile ft/mi fps ft design @20° design Q20° design
Segment 1
Reach 1
1.90
35.60
0.479
1.02
0.30 0.43
25.81
30.71I 0.27
Flow
cfs
Segment 1 Reach 1
Waste
Headwaters
Tributary
* Runoff
0.930
4.800
0.000
1.800
CBOD NBOD D.O.
mg/1 mg/1 mg/1
45.000 45.000 0.000
2.000 1.000 9.700
2.000 1.000 9.700
2.000 1.000 9.700
* Runoff flow is in cfs/mile