NC0083119_Permit Issuance_19991223

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
December 23, 1999
Mr. Andy C. Lovingood
Director of Engineering
P.O. Box 308
Concord, North Carolina 28026
e�A
NCDENR
Subject: NPDES Permit Issuance
Permit No. NCO083119
Coddle Creek Water Treatment Plant
Cabarrus County
Dear Mr. Lovingood:
In accordance with your application for discharge permit received on March 2, 1999 by the Division,
we are forwarding herewith the subject permit to discharge under the subject state - NPDES 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 take notice that this permit is not transferable except after notice to the Division of Water Quality.
Part IL EA. addresses the requirements to be followed in case of change in ownership or control of this discharge.
The Division of Water Quality 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 the Michael Myers at telephone number [phone] Ext. 508.
c iofffilySigned By
David A. Goodrich
Kerr T. Stevens
cc: Central Files
Mooresville Regional Office/WQ Section
NPDESZTnit1
Point Source Compliance Enforcement Unit
1617 MAIL SERVICE CENTER, RALEIGH, NORTH CAROLINA 27699-161 7 -TELEPHONE [phone]/FAX [phone]
AN EQUAL OPPORTUNITY AFFIRMATIVE ACTION EMPLOYER - 50% RECYCLED/ 10% POST -CONSUMER PAPER
VISIT US ON THE INTERNET AT http://h2o.enr.state.nC.us/NPDES

Permit No. NCO083119
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PFR MTT
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,
City of Concord
is hereby authorized to discharge wastewater from a facility located at
Coddle Creek Water Treatment Plant
NC Highway 73
Concord
Cabarrus County .
to receiving waters designated as Coddle 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 February 1, 2000.
This permit and authorization to discharge shall expire at midnight on January 31, 2004.
Signed this day December 23, 1999.
Original Signed By
David k Goodrich
Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit No. NCO0831 19
SUPPLEMENT TO PERMIT COVER SHEET
City of Concord
is hereby authorized to:
1. Continue operation of two wastewater storage treatment lagoons for the treatment of water
treatment plant filter backwash, at the Coddle Creek Water Treatment Plant.
2. Discharge filter backwash water from said treatment works at the location specified on the attached
map through outfall 001 into Coddle Creek which is classified C waters in the Yadkin -Pee Dee River
Basin.

Discharge Location
Facffity
alq
Latitude:
0
35 25'57" Sub -Basin 03-07-08
Location
I-R.
Longitude:
8e41'40"
Quad #
F16NW
Stream Class:
C
Receivi!X Strewn
CODDLE
North
City of Concord
NCO083119
PL-n-nitted Flow.
N/A
Coddle Creek Water Treatiment. Plant

Permit NCO0831 19
A. (IL) EFFLUENT. LIMITATIONS AND MONITORING REQUIREMENTS - Final
During the period beginning on the effective date and lasting until expiration, the Permittee is
authorized to discharge from outfall 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
Locationl
Flow
Weekly
Instantaneous
E
Total Suspended Residue
30.0 mg/1
45.0 mg/1
2/Month
Grab
E
Setteable Solids
0.1 ml/I
0.2 mUl
Weekly
Grab
E
Turbidity2
Weekly
Grab
U,D
Iron
Weekly
Grab
E
Aluminum
Weekly
Grab
E
Total Residual Chlorine
Weekly
Grab
E
Footnotes:
1. Sample locations: E - Effluent; U - Upstream; D - Downstream
2. The discharge shall not cause the turbidity of the receiving stream to exceed 50 NTU. If the
turbidity exceeds these levels due to natural background conditions, the discharge level cannot
cause any increase in the turbidity in the receiving water.
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.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

The Independent Tribune, Inc.
NORTH CAROLINA
CABARRUS COUNTY
On this, the a i N" day of ,C 19 ti L
of THE INDEPENDENT TRIBUNE, Inc., after being duly
sworn, says that the annexed advertisement was duly
inserted in the paper on the following dates:
(C'CfcLCL(-" �. 1001C/
and was published therein once a week for
weeks. The total cost of this advertisement $ r7c 5 (IL,
Subs ribed and sworn to the day above first mentioned.
1
My Commission Expires -
-i'NOTICE bar red in the
STATE Ocons ooM ^
STATE OF NORTH formulation
of final Public notice of infant to issue OYZ✓G 4�/
CAROLINA determinations regarding the a State NPDES permit to the IV(,.
m ENVIRONMENTAL proposed permit. A public following:
7-'MANAGEMENT hearing may be held where 1. NPEDES InVW
�['� �COMMISSION the Director of the Division of The City of Con
165I OFFICE BOX 29535 Water Quality finds a 308, Concord. NC 28026 has
.+.-RALEIGH, NORTH significant degree of public applied for renewal of the
+*CAROLINA27626-0535 Interest in a proposed permit. NPDES permit for filter
NOTIFICATION OF INTENT backwash water generated
TO ISSUE A STATE NPDES A copy of the draft permit is from its water !resonant plant.
PERMIT available by writing or calling The facility la permitted to
the Division of Water quality , discharge treated filler
On the bases of thorough 1617 Mail Service Center, backwash wastewater from
shaft review and application of Raleigh, North Carolina on cuMall Into Coddle Creek,
AdiUe 21 of Chapter 143, 27699-1617 [phone], a class C Water In the Yadkin -
General Statues of North eidenslan 538. Pee Dee River Basin. No
Carolina. Public Law 92-500 parameters are water quality
and other lawful standards The application and other limited at this time. This
and regulations, the North information may be Inspected discharge may affect future
Carolina Environmental at these locations during water quality based effluent
Management Commission normal office hours. Copies of limitation for additional
proposed to issue a permit to the Information on file are discharges within this portion
discharge to the persons available upon request and of the watershed
Wed! behw effective and payment of the costs of No. 727 Od. 8, 1999
subject to special conditions. production. All such
comments or requests
Persons wishing to comment regarding proposed perm6
upon or object to the should make reference to the
proposed determinations are NPDES permit number Wed
Invited to submit same In below.
writing W the above address g9M
no later than 30 days from the DavidAGooddch
publish date. At comments Ker T. Stevens, Director
received prior to that date will Division W Water Quality
N'D
V+'' 9 \999
NOQOUOG� oFF\cE
ciw�e cv iti 4
(r,1�9

DENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NCO083119
Facility Information
Applicant/Facility Name:
Coddle Creek Water Treatment Plant
Applicant Address:
P.O. Box 308 Concord, NC 28026
Facility Address:
6935 Davidson Highway, Concord, NC 28027
Permitted Flow
N/a
Type of Waste:
Water Treatment plant filter backwash
Facility/Permit Status:
Renewal
County:
Cabarrus
Miscellaneous
Receiving Stream:
Coddle Creek
Regional Office:
Mooresville
Stream Classification:
C
USGS Topo Quad:
F16NW
303(d) Listed?:
Yes
Permit Writer:
Michael Myers
Subbasin:
03-07-11
Date:
September 24, 1999
Drainage Area (mi2):
N/a
Summer (cfs)
N/a
Winter 7Q10 10 (cfs):
N/a
Average Flow (cfs):
N/a
IWC (%):
N/a
Primary SIC Code:
4941
SUMMARY
This facility maintains one outfall, 001. Wastewater from filter backwash is treated using two wateiwater
storage/treatment lagoons and discharged into Coddle Creek.
The receiving stream (Coddle Creek) is classified as C waters and is on the 303(d) list as an impaired water.
The May 1998 Yadkin -Pee Dee River Basinwide Water Quality management Plan concludes that this stream
is does not supports its designated uses because of nonpoint source pollution.
TOXICITY TESTING:
Current Requirement: None
Recommended Requirement: None recommended.
COMPLIANCE SUMMARY:
No NOVs and plant has one noncompliance during the time period 1/1/96 — 7/1/99. The non compliance
resulted from the discharge of water outside of the limit for settleable solids.
INSTREAM MONITORING:
This facility is required to monitor turbidity of the receiving stream both upstream and downstream from the
outfall. A turbidity limit has been implemented.
PROPOSED CHANGES:
The flow limit has been removed from the permit. The since the wastewater treatment facility is not RO there
is no need to limit flow.
Excluding flow the limits and monitoring requirements outlined in the previous permit remain consistent with
the minimum requirements for this type of facility. Therefore, it is recommended that this permit be renewed
without changes.
Coddle Creek Water Treatment Plant Fact Sheet
NPDES Renewal
Page I

It is division policy to implement Fe monitoring for all water treatment plants and Al monitoring if alum is
utilized during the treatment process. Most facilities utilize either ferric sulfate or alum but rarely both,
therefore the need for monitoring of both Fe and Al should be examined. Permits should require that either
Fe or AL be monitored (depending on which coagulant is used) with a footnote requiring the other be
monitored only if used in the treatment process.
PROPOSED SCHEDULE FOR PERMIT ISSUANCE:
Draft Permit to Public Notice:
Permit Scheduled to Issue:
STATE CONTACT:
If you have any questions on any of the above information or on the attached permit, please contact Michael
Myers at [phone] ext. 508.
REGIONAL OFFICE COMMENT: This is a minor permit renewal therefore the regional office comments
will be solicited during the public comment period.
Copies of the following are attached to provide further information on the permit development:
• Reasonable Potential Analysis (majors only)
• Existing permit effluent sheets with changes noted (existing facilities only)
• Draft Permit
Coddle Creek WaterTrcat1T1cnt Plant Dart Sheet
NPDES Renewal
Page 2

NPDES Recommendation by:
Signature Date
Regional Office Comments
Q� j £Ce�� e ts✓t vat�o i7o w w/ M lt�e-
aT o t4 r C-c —t(T J .!-SS1J-�w-�� '✓"`.`cam l`�/�lwLr%
Date
Regional Recommendation by:
Signature
Reviewed and accepted by:
Date
Regional Supervisor:
Signature
NPDES Unit Supervisor:
/ � �jJjc`
Date
/ZTEI y
Si ature
0
Coddle Crock water Treatment Plant Fact Sheet
NPDES Renewal
t'tl^_e

To: Permits and Engineering Unit
Water Quality Section
Attention: Charles Weaver
SOC PRIORITY PROJECT: No
Date: June 4, 1999
NPDES STAFF REPORT AND RECOMMENDATIONS
County: Cabarrus
NPDES Permit No.: NCO083119
MRO No.: 99-70
PART I - GENERAL INFORMATION
1. Facility and Address: Coddle Creek Water Treatment Plant
L
City of Concord
Post Office 308
Concord, N.C. 28025
2. Date of Investigation: May 28, 1999 r
3. Report Prepared By: Michael L. Parker, Environ. Engr. II
4. Person Contacted and Telephone Number: Rick Wood, [phone]
5. Directions to Site: From the junction of SR 1430 (N. Crisco Rd.) and Hwy. 73 in western
Cabarrus County, travel 0.7 mile west on Hwy. 73. The entrance to the WTP is on the left
(south) side of Hwy. 73 just before crossing Coddle Creek.
6. Discharge Point(s), List for all discharge Points: -
Latitude: 350 25' 57"
Longitude: 800 41' 40"
Attach a USGS Map Extract and indicate treatment plant site and discharge point on map.
USGS Quad No.: F 16 NW
7. Site size and expansion area consistent with application: Yes.
8. Topography (relationship to flood plain included): The WTP site is located adjacent to
the 100 year flood plain, however, no WWT facilities appear to be located at or near the
100 year flood plain elevation.
9. Location of Nearest Dwelling: None within 300 feet of the site.

Page Two
10. Receiving Stream or Affected Surface Waters: Coddle Creek
a. Classification: C
b. River Basin and Subbasin No.: Yadkin 030711
C. Describe receiving stream features and pertinent downstream uses: A reservoir
has been constructed = 2500 feet upstream of the discharge point. A minimum
release of 6.0 cfs is expected from the dam. The receiving stream is well defined,
and has a drainage area that is generally rural both upstream and downstream. This
Office is aware of no other discharges and/or water intakes within a mile
downstream of this proposed facility.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of Wastewater: 0.6 MGD (Based on Rated Capacity of WTP).
b. What is the current permitted capacity: 0.6 MGD
C. Actual treatment capacity of current facility (current design capacity): 0.6 MGD
d. Date(s) and construction activities allowed by previous ATCs issued in the
previous two years: N/A
e. Description of existing or substantially constructed WWT facilities: The existing
WWT facilities consist of two (2) wastewater storage/treatment lagoons that can
be used alternately or in series depending on the plant's needs prior to discharge to
Coddle Creek.
f. Description of proposed WWT facilities: There are no proposed WWT facilities at
this time.
g. Possible toxic impacts to surface waters: Data collected in a study by DWQ of
WTP effluents has found a variety of concerns (toxicity from chlorine, aluminum,
etc.), that warrant further attention. The WLA should address these contaminants
and the potential for toxic impacts.
h. Pretreatment Program (POTWs only): N/A
2. Residual handling and utilization/disposal scheme: Once residual disposal becomes
necessary, the applicant proposes to dispose of the alum residuals generated by this facility
in a private landfill owned by BFI.
3. Treatment Plant Classification: Class I
4. SIC Code(s): 4941
Wastewater Code(s): 21
MTU Code(s): 50001

Page Three
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant Funds or are any public monies
involved (municipals only)? Public monies were used to construct this facility.
2. Special monitoring or limitations (including toxicity) requests: None, pending receipt and
approval of the WLA.
3. Important SOC/JOC or Compliance Schedule dates: N/A
4. Alternative Analysis Evaluation
a. Spray Irrigation: Insufficient area available.
b. Connect to regional sewer system: None available.
C. Subsurface: Insufficient area available.
d. Other disposal options: N/A
PART IV - EVALUATION AND RECOMMENDATIONS
The applicant request renewal of the subject permit. There have been no changes to the
WTP and/or the permit since the permit was last renewed. It is requested in this renewal request
that consideration be given to eliminating the permit limitation for flow. Since this information
provides no useful benefit, this Office has no objection and recommends that the flow limitation
be removed.
Pending receipt of the revised WLA, additional WWT facilities may be necessary to
reduce pollutants that may be expected in discharges of this type. Therefore, pending approval of
the WLA, it is recommended that NPDES Permit be issued.
c
C Signature of Report Preparer Date
Water Quality Regional Sup
h:ldsrldsr991codd1crk.wtp
ea AL/---'6n
isor Date

Ilrlkk/r..
March 31, 1999
Mr. Charles H. Weaver, Jr.
NC DENR/DWQ/NPDES
P. O. Box 29535
Raleigh, North Carolina 27626-0535
RE: Coddle Creek Water Treatment Plant
NPDES Permit NCO083119
City of Concord, Cabarrus County
Dear Mr. Weaver:
Enclosed please find the NPDES permit renewal package for the City of Concord's Coddle
Creek Water Treatment Plant. As you and I discussed during our recent telephone conversation,
this is the first renewal of the NPDES permit. Generally, the water plant produces 6.0 million
gallons per day of potable water for public consumption through our water distribution system.
The plant treats raw water from the Coddle Creek Reservoir with contact clairifiers and mixed
media filters. Both processes, clarification and filtration require backwashing. The filters must
be backwashed with potable water. However, the clarifiers are backwashed with raw water from
the reservoir. The backwash is treated onsite by two (2)-settling basins prior to discharge into
Coddle Creek, downstream of the reservoir. Approximately 50 percent of discharge is raw water
from the clarifiers.
Charles, as we discussed, we believe that during this first renewal of the permit is the time to
address the flow limit. We understand that the original DWQ/NPDES staff reports did not ask
for or recommend flow limits. We also understand that several water treatment plans with
settling basins similar to ours are permitted without flow limits. With this precedent, together
with the compliance history of the facility, the City of Concord hereby requests that effluent flow
limits be removed from our permit. We propose to sample during representative flows for all
other effluent limitations and monitoring requirements as they are now.
We have discussed this issue with Mr. Terry Gross, the regional water treatment plant expert for
NCDENR/DEH — Public Water Supply Section. Mr. Gross indicated his support of this request.
We have also discussed flow issues with Mr. Rex Gleason with the Moresville Regional Office.
He stated no objections and deferred us to your office for approval.
Sludge Management Plan
The settling basins have not required removal of the settled solids as of yet. We do anticipate
this to become a necessity within the next 1-1/2 years. Our sludge management plan for the
ENGINEERING DEPARTMENT
City of Concord • P.O. Box 308 • 66 Union Street, South • Concord, North Carolina 28025 • [phone] • Fax [phone] • TDD 1-800-735-8262

f
Mr. Charles H. Weaver, Jr.
March 31, 1999
Page 2 of 2
settling basins is to contract dewater and haul the sludge. The sludge will be dewatered onsite
then hauled to BFI's landfill within the City limits of Concord. The City has a contract with BFI
for municipal solid waste disposal. The sludge if not landfilled by BFI will be mixed with soil
and used as daily cover for the landfill. We have already spoken with several firms for the
dewatering and hauling contract.
We look forward to your timely review and approval. Should you have need for additional
information, please do not hesitate to contact my office at [phone], ext. 303.
Sincerely,
C TY OF CONCORD
ANDY C. LOVINGOOD, P.E.
DIRECTOR OF ENGINEERING
Enclosures
ACL/dll
cc: Rex Gleason, P.E.
Tim Lowder, P.E.
Henry Waldroup