NC0021857_Speculative Limits_20000502

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
Limits
Environmental Assessment (EA)
Document Date:
May 2, 2000
Miss document its pririted on reuse paper - ignore any
content gait the relireriese aside

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
May 2, 2000
Mr. Cecil Lewis
Public Works Supervisor
P.O.Box 429
Newland, North Carolina 28657
Dear Mr. Lewis:
AvTon
NCDENR
Subject: Speculative Limits
Town of Newland
NC0021857
Avery County
This letter is in response to your request (dated November 22, 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 0.4 MGD, which revises the previously requested speculative limit
for 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 0.4 MGD
• Change in monthly effluent ammonia limits from 6.0 mg/1 to 5.2 mg/1 in summer,
and from 17 mg/1 to 14.0 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
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
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Town of Newland
Speculative Limits
Page 2
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) was previously enclosed with the last speculative limit request.
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
cc: Michael Calhoun, Vaughn and Melton Engineers, PO Box 16339, Asheville, NC 28816
Asheville Regional Office, WQ
Central Files
NPDES Files

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:
EFFLUENT CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Locations
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,l"
Total Suspended Residue
30.0 mg/I
45.0 mg/I
Weekly
Composite
E,I2
NH3 as N (April 1 - October 31)
5.2 mg/I
Weekly
Composite
E
NH3 as N (November 1 - March 31)
14.0 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
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.