NC0068365_Permit (Issuance)_19991001

NPDES DOCUMENT 5CANNIN`i COVER :MEET
NPDES Permit:
NC0068365
Pilot Mountain
WTP
Document Type:
Permit Issuance``
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File
- Historical
Engineering Alternatives (EAA)
Staff Report
Instream Assessment
(67b)
Speculative Limits
Environmental Assessment (EA)
Permit
History
Document Date:
October 1, 1999
This document is printed csitt reuse paper - ignzore any
content on the reYerse ,aide

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
October 1, 1999
Mr. Billy Pell
Town of Pilot Mountain
Post Office Drawer AA
Pilot Mountain, North Carolina 27041
A7A
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject: Issuance of NPDES Permit NC0068365
Pilot Mountain WTP
Surry County
Dear Mr. Pell:
The Division received your application for a wastewater discharge permit on December 31,
1998. Division personnel have reviewed and approved your application. Accordingly, we are
forwarding the attached NPDES discharge permit. This permit is issued pursuant to the requirements
of North Carolina General Statute 143-215.1 and the Memorandum of Agreement between North
Carolina and the U.S. Environmental Protection Agency dated December 6, 1983, and as subsequently
amended.
If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty
(30) days following receipt of this letter. This request must be in the form of a written petition,
conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of
Administrative Hearings, Post Office Drawer 27447, Raleigh, North Carolina 27611-7447. Unless such
demand is made, this decision shall be final and binding.
Please note that this permit is not transferable except after notice to the Division. The Division
may require modification or revocation and reissuance of the permit.
This permit does not affect the legal requirements to obtain other permits which may be
required by the Division of Water Quality or permits required by the Division of Land Resources, the
Coastal Area Management Act or any other Federal or Local governmental permit that may be
required.
If you have any questions concerning this permit, please contact Charles Weaver at telephone
number [phone], extension 511.
Sincerely,
Original Signed By
David A. Goodrich
Kerr T. Stevens
cc: Central Files
Winston-Salem Regional Office/Water Quality Section
NPDES Unit
Point Source Compliance Enforcement Unit
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
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Permit NC0068365
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful
standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended, the
Town of Pilot Mountain
is hereby authorized to discharge wastewater from a facility located at the
Pilot Mountain WTP
Main Street near U.S. Highway 52
north of Pilot Mountain
Surry County
to receiving waters designated as Toms Creek in the Yadkin -Pee Dee River Basin
in accordance with effluent limitations, monitoring requirements, and other
conditions set forth in Parts I, II, III and IV hereof.
This permit shall become effective November 1, 1999.
This permit and authorization to discharge shall expire at midnight on February 29, 2004.
Signed this day October 1, 1999.
Original Signed By
David A. Goodrich
Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit NC0068365
SUPPLEMENT TO PERMIT COVER SHEET
The Town of Pilot Mountain is hereby authorized to:
1. Continue to operate an existing filter backwash system consisting of the following
components:
• Gravity thickener with plate settlers
• Eight sand drying beds
• Earthen sedimentation lagoon
This facility is located on Main Street (near U.S. Highway 52) north of Pilot
Mountain in Surry County.
2. Discharge from said treatment works at the location specified on the attached
map into Toms Creek, classified C waters in the Yadkin -Pee Dee River Basin.

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30gT.� i�ila fllil �' /•o
804330' ' 5453 MI. TO U.S. 601
pd-1ot Mountain WTI?
NC0068365-001
RECEIVING STREAM: Toms Creek
Stream Classification: C
USGS Quad. No. : B-17NW
USGS Quad. Name: Pilot Mountain
County: Surry
liPA
5461 PINNACLE 4.7 MI. 1 547
WINSTON-SALEM 24 MI.
Mapped, edited, and published by the Geological Survey
1548 27'30"
154
P/NNA
WINST
Latitude: 3623'57"
Longitude: 80°29'18"
Quad f! B l7NW
Receiving Stream: Toms Creek
Stream Class: C
Subbasin: 30703
NC0068365
Town of Pilot Mountain
WTP
SCALE 1 :24000

Permit NC0068365
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - FINAL
During the period beginning on the effective date of this permit and lasting until expiration, the Permittee is
authorized to discharge filter backwash from outfall 001. Such discharges shall be limited and monitored by
the Permittee as specified below:
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Daily
Maximum
Measurement
Frequency
Sample Type
Sample Location
Flow
Weekly
Instantaneous
Effluent
Total Suspended Solids
30.0 mg/l
45.0 mg/I
2/Month
Grab
Effluent
Settleable Solids
0.1 mg/I
0.2 mg/l
Weekly
Grab
Effluent
Turbidity1
Weekly
Grab
Upstream & Downstream
Iron
Weekly
Grab
Effluent
Total Residual Chlorine
Weekly
Grab
Effluent
Aluminum
Weekly
Grab
Effluent
Footnotes:
1. The discharge from this facility shall not cause turbidity in the receiving stream to exceed 50 NTU. If the
instream turbidity exceeds 50 NTU due to natural background conditions, the discharge cannot cause
turbidity to increase in the receiving stream.
All samples collected should be from a representative discharge event.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

NCDENR/DIVISION OF WATER QUALITY
Water Quality Section/NPDES Unit
Apri18, 1999
MEMORANDUM
To: Larry Coble
WSRO — Water Quality Supervisor
From: Mark McIntire 714.4.4—
NPDES Unit
Subject: Draft NPDES Permits
Attached with this memorandum are draft NPDES permits for the following facilities:
etaltUrb
N.C. Dept. of EHNR
APR 1 2 1999
Winston--Sc=s!ern
Regional Office
NPDES Permit #
Facility Name
County
Basin
NPDES Contact
NC0037854
Winston-Salem - Elledge WWTP
Forsyth
030704
Mark !Mclntire
NC0055093
RJ Reynolds - Tobaccoville Plant
Forsyth
030704
Mark Mclntire
NC0068365
Pilot Mountain WTP .
Surry
030705
Charles \Veaver
NC0084425
Davidson Water, Inc. WTP
Davidson
030704
Charles Weaver
NC0084212
Davie County - Sparks Rd. \VTP
Davie
030702
Charles Weaver
Please have your appropriate staff review the draft permits and forward any comments to me.
Thanks for you assistance.
cc: Mark McIntire — Basin File
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NC DENR / DWQ / NPDES Unit - FACT SHEET FOR PERMIT DEVELOPMENT
Permit NC0068365
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Facility:
Town of Pilot Mountain WTP
NPDES Permit:
NC0068365
Permitted Flow:
No Limit
Facility Class:
I
Type of Waste:
WTP — Filter Backwash
Permit Status:
Renewal
County:
Surry
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iy •.':.. treat _ y�,�..�,?: ��:'> i;�. i�i C.-r,. _�.,` t..,
tream� aracte
Irr .
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Receiving Stream:
Toms Creek
Stream Classification:
C
Subbasin:
30703
Drainage Area (mi2):
N/A
Summer 7Q10 (cfs)
N/A
Winter 7Q10 (cfs):
N/A
. 30Q2 (cfs):
N/A
Average Flow (cfs):
N/A
IWC (%):
N/A
•
; •P� , _
--z #::-:-At?Miscellaneousy s ` i'f _
;-
l..":
4
Regional Office:
Winston-Salem
USGS Topo Quad:
B17NW
Changes Incorporated into Permit Renewal
Proposed Changes
Changed description of installed
components (Supplement page)
Parameters Affected,
N/A
Basis ,forr change(s))
Info from current permit
application
Summary,
Components in use are described in a staff report (dated February 10, 1994) and the permit renewal application
(received December 31, 1998).
DMRs were reviewed by personnel from the WSRO during Compliance Evaluation Inspections on May 16, 1996
and April 8, 1997. Their DMR reviews covered the period from April 1995 to January 1997, with the following
violations noted:
No DMR data — samples lost (December 1995)
. TSS violation — lagoon wall collapsed (March 1996)
The 4/8/97 CEI noted that sludge disposal questions remained unresolved, but that the Town planned to send
sludge to a municipal landfill. The renewal application submitted indicated that a "local landfill" received dried
sludge from the facility.
I reviewed DMRs from February 1997 to October 1998. No violations were noted. A tornado caused a loss of
power at the facility laboratory from May 7-9, 1998. Upstream and downstream readings were consistent — no
discernible impact from the discharge.
Page 1 of 2

NC DENR / DWQ / NPDES Unit - FACT SHEET FOR PERMIT DEVELOPMENT
Permit NC0068365
The receiving stream is not impaired or threatened. No segments of Toms Creek (in subbasin 30703) appear on
the latest 303(d) list. Toms -Creek was on the 1996 303(d) list but was removed from the 1998 303(d) list based
on more recent data.
Proposed Schedule for Permit Issuance
Draft Permit to Public Notice: March 31, 1999
Permit Scheduled to Issue: July 1, 1999
State Contact
If you have any questions on any of the above information or on the attached permit, please contact
Charles Weaver at:
[phone], extension 511
[e-mail]
Copies of the following are attached to provide further information on the permit development:
• Draft Permit
r� - , /,, _
NPDES Recommendation by: 1v'r Date: % 7 /
Regional Office Comments
%io c c r►z/j n-12l✓Z iJ fro R23 on,
n,
Regional Recommendation by: � Date: Li / zo 1 qc
Reviewed By:
Regional Supervisor: £) . Date: 9 _2 6 `I
NPDES Unit: ' , (- ti J Date: 14)` `6\
Page 2 of 2

PUBLIC NOTICE
STATE OF NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
POST OFFICE BOX 29535
RALEIGH, NORTH CAROLINA 27626-0535
NOTIFICATION OF INTENT TO ISSUE A STATE NPDES PERMIT
On the basis of thorough staff review and application of Article 21 of Chapter 143, General Statutes of
North Carolina, Public Law 92-500 and other lawful standards and regulations, the North Carolina
Environmental Management Commission proposes to issue a permit to discharge to the persons listed
below effective 5/25/99 and subject to special conditions.
Persons wishing to comment upon or object to the proposed determinations are invited to submit same in
writing to the above address no later than 5/10/99 . All comments received prior to that date will be
considered in the formulation of final determinations regarding the proposed permit. A public meeting may
be held where the Director of the Division of Environmental Management finds a significant degree of
public interest in a proposed permit.
A copy of the draft permit is available by writing or calling the Division of Environmental Management,
P.O. Box 29535, Raleigh, North Carolina 27626-0535, [phone].
The application and other information may be inspected at these locations during normal office hours.
Copies of the information on file are available upon request and payment of the costs of reproduction.
All such comments or requests regarding a proposed permit should make reference to the NPDES permit
number listed below.
Daw �e1 /R9
4
•\err E Sa. tS Director
4b)it, Division of Environmental Management
Public notice of intent to issue a State NPDES permit to the following:
1. NPDES Permit NC0068365. The Town of Pilot Mountain (P.O. Drawer AA, Pilot Mountain, NC
27041) has applied for renewal of the NPDES permit renewal for the Pilot Mountain Water Treatment
Plant, located on Main Street northwest of Pilot Mountain in Surry County. The facility discharges filter
backwash from one outfall into Toms Creek, a Class C stream in the Yadkin -Pee Dee River Basin.
Turbidity is water quality limited. This may affect future water quality based effluent limitations for
additional dischargers within this portion of the watershed.

Permit NC0068365
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period begin
authorized to dischargfrom outfall 001. Such discharges shall be limited and monitored by the Permittee as
specified below:
ing on the effective date of this permit and lasting until expiration, the Permittee is
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ITORING REQUIREM
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Flow
Weekly
Instantaneous
Effluent
Total Suspended Solids
30.0 mg/I
45.0 mg/I
2/Month
Grab
Effluent
Settleable Solids
0.1 mg/I
0.2 mg/I
Weekly
Grab
Effluent
Turbidity1
50 NTU
Weekly
Grab
Upstream & Downstream
Iron
Weekly
Grab
Effluent
Total Residual Chlorine
Weekly
Grab
Effluent
Aluminum
Weekly
Grab
Effluent
pH2
Weekly
Grab
Effluent
Footnotes:
1. The discharge from this facility shall not cause turbidity in the receiving stream to exceed 50 NTU. If the
instream turbidity exceeds 50 NTU due to natural background conditions, the discharge cannot cause
turbidity to increase in the receiving stream.
2. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be
monitored weekly at the effluent by grab sample.
All samples collected should be from a representative discharge event.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

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TOWN OF PILOT MO1UNTAIN
FROM THE OFFICE OF
Mr. Charles H. Weaver, Jr.
NC DENR / DWQ /NPDES
P.O. Box 29535
Raleigh, North Carolina 27626-0535
Dear Mr. Weaver:
P. O. DRAWER AA
PILOT MOUNTAIN, N. C. 27041
December 28, 1998
PHONE [phone]
Subject: Renewal of NPDES permit NC0068365
Pilot Mountain WTP
Surry County
Please find enclosed the completed renewal form for NPDES NC0068365 which expires on
June 30, 1999. It is my understanding that an original and two copies along with the application fee must be
submitted 180 days prior to expiration. I hope the documents herein comply with this requirement.
There have been no changes in the "alum sludge" removal system at our water plant. The water treatment
plant itself is operating on a reduced schedule and this results in a 65% reduction of sludge to be removed.
The sludge that is removed is dried and hauled to a local landfill. No inventory records are kept on
these amounts as this is currently not required for "alum sludge."
If after review of the material herein you have any questions about our facility please contact John Martin
at 336-368-4592.
Sincerely,
Billy T. Pell