NC0084573_Permit Issuance_20100312

North Carolina
Beverly Eaves Perdue
Governor
Mr. Barry L.'McKinnon, P.E.
County of Lincoln
115 West Main Street
Lincolnton, NC 28092
46if�
NCDENR
Department of Environment and
Division of Water Quality
Coleen H. Sullins
Director
March 12, 2010
Subject: Issuance of NPDES Permit NCO084573
Lincoln County WTP
Lincoln County
Dear Mr. McKinnon:
Natural Resources
Dee Freeman
Secretary
Division personnel have reviewed and approved yogr application for renewal of the subject permit. 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 October 15, 2007 (or as subsequently amended).
This final permit includes no changes from the draft permit sent to you on January 20, 2010.
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 (6714 Mail Service Center, Raleigh, North
Carolina 27699-6714). 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 Bob Sledge at telephone number [phone]
or via e-mail at [e-mail].
Sincerely,
Coleen H. Sullins
cc: Central Files
Mooresville Regional Office/Surface Water Protection Section
NPDES Unit
1617 Mail Service Center, Raleigh, North Carolina 27699.1617 One
hocatfon: 512 N. Salisbury St. Raleyh, North Carolina 27604 NorthCarolina
Phone: 919rvv.nc 300 \ FAX: [phone] \Customer Service: 1-877-623-6748 �a�f�
Internet www.ncwaterquality.org L
An Equal Opportunity\ Affirmalive Acton Employer atu"

Permit NCO084573
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
IUMPETIM
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions 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
County of Lincoln
is hereby authorized to discharge wastewater from a facility located at the
Lincoln County WTP
7674 Tree Farm Road
Lincoln County
to receiving waters designated as Lake Norman (Little Creek Arm) in the Catawba 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 April 1, 2010.
This permit and authorization to discharge shall expire at midnight on March 31, 2015.
Signed this day March 12, 2010.
St
oleen H. Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission

• Permit NCO084573 `
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby
revoked, and as of this issuance, any previously issued permit bearing this number is no longer
effective. Therefore, the exclusive authority to operate and discharge from this facility arises under the
permit conditions, requirements, terms, and provisions included herein.
The County of Lincoln
is hereby authorized to:
1. Continue to operate a water treatment plant with a discharge of dechlorinated, filter -backwash
wastewater. This facility is located at the Lincoln County WTP, at 7674 Tree Farm Road in
Lincoln County.
2. Discharge from said treatment works at the location specified on the attached map into Lake
Norman (Little Creek Arm), classified WS-IV & B; CA waters in the Catawba Rive` Basin.

Permit NCO084573
A. (I.) 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 from outfall 001. Such discharges shall be limited and monitored
by the Permittee as specified below:
EFFLUEN
CHARACTERISTIC
LIMITS '
MONITORING REQUIREMENTS
,..
Monthly..Daily
Average
Maximum
Measurement
Fre uenc
Type. ; ; ,
Sample T e.: ..
Sample Locat on
Flow
Weekly
Instantaneous
Effluent
Total Suspended Solids
30.0 mg/L
45.0 mg/L
2/Month
Grab
Effluent
Total Residual Chlorines
28,yu
2/Month
Grab
Effluent
pH2
2/Month
Grab
Effluent
Turbidity
2/Month
Grab
Effluent
Aluminum
Quarterly3
Grab
Effluent
Manganese
YJ
Quarterly3
Grab
Effluent
Fluoride
Quarterly3
Grab
Effluent
Total Copper
Quarterly3
Grab
Effluent
Total Iron
Quarterly3
Grab
Effluent
Total Nitrogen
Quarterly3
Grab
Effluent
Total Phosphorous
Quarterly3
Grab
Effluent
Whole Effluent Toxicity4
Quarterly
Grab
Effluent
Footnotes:
1. The Division shall consider all effluent TRC values reported below 50 µg/L to be in compliance
with the permit. However, the Permittee shall continue to record and submit all values reported by
a North Carolina certified laboratory (including field certified), even if these values fall below 50
lam•
2. The pH shall not be less than 6.0 standard units, nor greater than 9.0 standard units.
3. Monitoring should be performed in conjunction with toxicity testing.
4. See Condition A. (2.) for toxicity testing requirements. Toxicity testing should be performed during
the months of March, June, September and December, and sampling should coincide with sampling
for parameters covered by footnote 3.
There shall be no floating solids or foam in other than trace amounts.
All samples must be collected from a typical discharge event.

Permit NCO084573
A. (2.) CHRONIC TOXICITY MONITORING (QUARTERLY)
The permittee shall conduct guarterly chronic toxicity tests using test procedures outlined in the "North
Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998, or subsequent
versions.
The effluent concentration defined as treatment two in the procedure document is 90 %. The testing
shall be performed as a Ceriodaphnia dubia May pass/fail t6st. The tests will be performed during
the months of March, June, September and December. Effluent sampling for this testing shall be
performed at the NPDES permitted final effluent discharge below all treatment processes.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR-1) for the month in which it was performed, using the parameter
code TGP3B. Additionally,, DWQ Form AT-1 (original) is to be sent to the following address:
Attention: NC DENR I DWQ / Environmental Sciences Section
1621 Mail Service Center
Raleigh, N.C. 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Section no
later than 30 days after the end of the reporting period for which the report is made.
Test data shall be complete and accurate and include all supporting chemical/physical measurements
performed in association with the toxicity tests, as well as all dose/response data. Total residual
chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for
disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is
required, the permittee will complete the information located at the top of the aquatic toxicity (AT) test
form indicating the facility name, permit number, pipe number, county, and the month/year of the
report with the notation of "No Flow" in the comment area of the form. The report shall be submitted
to the Environmental Sciences Section at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, then
monthly monitoring will begin immediately. Upon submission of a valid test, this monthly test
requirement will revert to quarterly in the months specified above.
Should any test data from this monitoring requirement or tests performed by the North Carolina
Division of Water Quality indicate potential impacts to the receiving stream, this permit may be re-
opened and modified to include alternate monitoring requirements or limits.
If the Permittee monitors any pollutant more frequently then required by this permit, the results of such
monitoring shall be included in the calculation & reporting of the data submitted on the DMR & all AT
Forms submitted.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival, minimum control organism reproduction, and appropriate environmental controls,
shall constitute an invalid test and will require immediate follow-up testing to be completed no later
than the last day of the month following the month of the initial monitoring.

A:•
==
.
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director
January 20, 2010
MEMORANDUM
To: Britt Setzer
NC DENR I DEH I Regional Engineer
Mooresville Regional Office
From: Bob Sledge
NPDES Unit
Subject: Review of Draft NPDES Permit NCO075205
County of Lincoln — Lincoln County WTP
Lincoln County
Dee Freeman
Secretary
Please indicate below your agency's position or viewpoint on the draft permit and return this form by
February 19, 2010. If you have any questions regarding the draft permit, please contact me at (919)
807-6398 or via e-mail at [e-mail].
RESPONSE: (Check one)
Concur with the issuance of this permit provided the facility is operated and maintained properly,
the stated effluent limits are met prior to discharge, and the discharge does not contravene the
designated water quality standards.
R
Concurs with issuance of the above permit, provided the following conditions are met:
F—I Opposes the issuance of the above permit, based on reasons stated below, or attached:
Signec
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 One
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604 NofffiCarolina
Phone: [phone] FAX: [phone] Customer Service:1-877-623-6748 //
Internet: www.ncwaterquality.org 61atltrally
An Equal Opportunity 1 Affirmative Action Employer

The Charlotte Observer Publishing Co.
Charlotte, NC
North Carolina ) ss Affidavit of Publication
Mecklenburg County)
THE CHARLOTTE OBSERVER
---------------------------------------------------------------------------
DINA SPRINKLE
NCDENR/DWO/POINT SOURCE BRANCH
1617 MAIL SERVICE CENTER
RALEIGH NC 27699
REFERENCE: 30063432
6430976 Lincoln cty/statesvi
Before the undersigned, a Notary Public of said
County and State, duly authorized to administer
oaths affirmations, etc., personally appeared,
being duly sworn or affirmed according to Law,
doth depose and say that he/she is a
representative of The Charlotte Observer
Publishing Company, a corporation organized and
doing business under the laws of the State of
Delaware, and publishing a newspaper known as The
Charlotte Observer in the city of Charlotte,
County of Mecklenburg, and State of North Carolina
and that as such he/she is familiar with the
books, records, files, and business of said
Corporation and by reference to the files of said
publication, the attached advertisement was
inserted. The following is correctly copied from
the books and files of the aforesaid Corporation
and Publication.
N�nm�aOM CamEnioetl Manegemem
Cotnmi%IonINPDES Unit
1617 Mau Satbice Center
Notice of Intent to Ileiri. a NPD $l617
lewater Permd
The Nei Coroina Errvimnmenlel Manageni Co annei
P-Peaes to issue a NPDES wastewater aiacherge parr,W are
Pe2on(e) lWee below.
Written mmmnnu w.e.e...,, — _______ .
Armin the Cat
The city of stau
the Fourth Cr
diacherge atrei
reo.Dae A,ie..F
Aaaue North
NC00fA593 for
Catawba Count
to 1948 Norm
Nwer Basin.
L 30976
PUBLISHED ON: 01/24 - -- --�
AD SPACE: 76 LINE
FILED ON: 01/29/10
NAME: TITLE: J IIJ
DATE:
In Testimony Whereof I have hereunto set my hand and affixed my seal, the
day and year aforesaid. My Commission Expires May 17, 2011 Votary: JkAt.,XPy Commission Expires: _/_/_
•owiyueury.or8, or oy cabin,
01. Permit NC0 aa573 for the
for
al of
Wrohe hd W
to hreatiaer
Ceci
the Catawba

J
SOC Priority Project: No
To: Permits and Engineering Unit
Water Quality Section
Attention: Charles Weaver
Date: January 7, 2010
NPDES STAFF REPORT AND RECOMMENDATION
County: Lincoln
Permit No. NCO084573
PART I - GENERAL INFORMATION
1. Facility and address: Lincoln County Water Treatment Plant
7674 Tree Farm Lane
Denver, North Carolina 28037
2. Date of investigation: November 5, 2009
Report prepared by: B. Dee Browder, Environmental Engineer I
4. Persons contacted and telephone number: Mr. Barry Mckinnon, [phone].
Directions to site: From the intersection of Hwy 16 and Webb Road in eastern Lincoln
County, travel east on Webb Road approximately 1.1. miles and turn left on Tree Farm
Road. Travel approximately 0.2 mile on Tree Farm Road and the WTP is located on the left
side of Tree Farm Road.
6. Discharge point(s), list for all discharge points:
Latitude: 35° 31' 35" Longitude: 80° 59' 35"
7. Site size and expansion area consistent with application? Yes.
8. Topography (relationship to flood plain included): Moderately sloping; the WTP is not
located within the 100 year flood plain.
9. Receiving stream or affected surface waters: Lake Norman
a. Classification: WS-IV & B
b. River Basin and subbasin no.: Catawba 030832
C. Describe receiving stream features and pertinent downstream uses: The facility
discharges into a cove associated with the Little Creek arm of Lake Norman. There
was no evidence of impacts associated with this discharge at the time of the site visit.

PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted: 0.975 MGD (ultimate design capacity)
b. Current permitted capacity of the wastewater treatment facility: 0.975 MGD
C. Actual treatment capacity of the current facility (current design capacity): 0.975MGD
d. Date(s) and construction activities allowed by previous Authorizations to Construct
issued in the previous two years: N/A
e. Please provide a description of existing or substantially constructed wastewater
treatment facilities:
Raw water treatment process: Raw water is taken from Lake Norman and injected
with liquid alum. It then passes through flocculators, across sedimentation basins, is
injected with mixed oxidant for disinfection and filtered through multimedia filters.
It is injected with fluoride, caustic soda and phosphate and sent to the clear wells.
Wastewater process: Back wash and sedimentation sludge are sent to the clarifiers.
Sodium thiosulfate is broadcast on the backwash filter prior to the backwash process
at a 1 gallon/35,000 gallons of backwash water ratio. When solids settle the
supernate is discharged to the lake. 60,000 to 70,000 gallons are discharge per 48
hour period. The sludge is mixed with polymer and pumped to the vacuum drying
bed. When the sludge cracks it is removed for further drying. It is disposed of at the
Lincoln County Landfill for fill dirt.
f. Please provide a description of proposed wastewater treatment facilities: NIA
g. Possible toxic impacts to surface waters: N/A
h. Pretreatment Program (POTWs only): Not required.
2. Residuals handling and utilization/disposal scheme: Residuals are hauled to the Lincoln
County Landfill for fill material when sufficiently dry.
3. Treatment plant classification: No change from previous rating.

PART III - OTHER PERTINENT INFORMATION
Is this facility being constructed with Construction Grant Funds or are any public monies
involved? N/A
2. Special monitoring or limitations (including toxicity) requests: None.
Important SOC, JOC or Compliance Schedule dates (Please indicate): N/A
4. Alternative Analysis Evaluation: N/A
PART IV - EVALUATION AND RECOMMENDATIONS
The pemvttee, has requested reissuance of the subject permit.
Although additional drying of the alum sludge outside the vacuum was not part of the original
operational plan this change to operations has not resulted in any detrimental effects to this portion
of the plant site and had not affected adjacent properties.
The equipment associated with the treatment and disposal of wastewaters generated at this facility
consists of two(2) clarifiers, sludge vacuum with associated pumps, polymer tank and pump,
additional drying on open concrete pad for sludge and other associated appurtenances.
Please include the description of declorination at the filter basin backwash in the permit description.
MRO recommends that
`/ILJ a L—_ 1OLdD
Water Quality Regional Supervisor Date

r�or cOG4�i. Fly
COUNTY OF LINCOLN NORTH CAROLINA
r� ncea°`�r f
115 WEST MAIN STREET, 211 FLOOR CITIZENS CENTER. LINCOLNTON, NORTH CAROLINA 28092
DEPARTMENT OF PUBLIC WORKS
PHONE [phone]
FAX [phone]
Mrs. Dina Sprinkle
NC DENR/DWQ/Point Source Branch
1617 Mail Service Center
Raleigh, NC 27699-1617
November 9, 2009
Re: NPDES Permit NCO084573 Renewal Request
Dear Mrs. Sprinkle,
I am writing this letter to you to formally request the renewal of our WTP NPDES permit,
NC0084573. I apologize for the lateness of this request. You should find the permit
application filled out completely with all pertinent information and diagrams requested. Since
our last NPDES permit renewal, the plant capacity was increased from 3.0 mgd to 3.99 mgd
due to the installation of tube settlers in our sedimentation basins.
If you have any further questions, please feel free to contact me at your convenience.
I
i2t]?.E.
Senior Utility Engineer
RECEIVED
DENR - WATER OUALITY
PAINT SOURCE BRANCH

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
Mall the complete application to:
N. C. Department of Environment and Natural Resources
Division of Water Quality / NPDES Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
NPDES Permit Number NC0084573
If you are completing this form in computer use the TAB key or the up - down arrows to move from one
field to the next To check the boxes, click your mouse on top of the box. Otherwise, please print or type.
1. Contact Information:
Owner Name
Lincoln County
Facility Name
Lincoln County WTP
Mailing Address
115 West Main Street
City
Lincolnton
State / Zip Code
NC 28092
Telephone Number
[phone]
Fax Number
[phone]
e-mail Address
[e-mail]
2. Location of facility producing discharge:
Check here if same as above ❑
Street Address or State Road 7674 Tree Farm Lane
City
Denver
State / Zip Code
NC 28037
County
Lincoln
3. Operator Information:
Name of the firm, consultant or other entity that operates the facility. (Note that this is not referring to the
Operator in Responsible Charge or ORC)
Name
Lincoln County
1: 1
V r_ 1 )
Mailing Address
115 West Main Street
City
Lincolnton
r;OU o
.n
State / Zip Code
NC 28092
Telephone Number
(704 )736-8495
DENR - WATER
QUALITY
Fax Number
[phone]
POINT SOURCE
BRANCH
4. Ownership Status:
Page 1 of C-WTP 03105

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
Federal ❑ State ❑ Private ❑ Public
5. Type of treatment plant:
® Conventional (Includes coagulation, flocculation, and sedimentation, usually followed by
filtration and disinfection)
❑ Ion Exchange (Sodium Cycle Cationic ion exchange)
❑ Green Sand Filter (No sodium recharge)
❑ Membrane Technology (RO, nanofiltration)
Check here if the treatment process also uses a water softener ❑
6. Description of source water(s) (Le. groundwater, surface water)
Surface Water
7. Describe the treatment proceas(es) for the raw water.
Raw water is taken from Lake Norman and injected with liquid slam. It is then passed
through flocculatora, across sedimentation basins, injected with mixed oxidant for
disinfection and then filtered through multi -media filters. It is then injected With
flouride, caustic soda and phosphate. It is then sent to the clear wells.
S. Describe the wastew and the treatment processes) for wastewater generated by the
facility.
Back wash and sedimentation sludge are sent to the clarifiers. When the solids settle out,
the supernate is discharged to the lake. The sludge is mixed with polymer and pumped
to the vacuum drying bed. When the sludge cracks, it is removed for farther drying. It is
then loaded and sent to the Lincoln County Landfill for fill dirt.
9. Number of separate discharge points: 1
Outfall Identification number(s) 1
10. Frequency of discharge: Continuous ❑ Intermittent
If intermittent:
Days per week discharge occurs: 4 Duration: 2 hours
11. Plant design potable flowrate 3.99 MGD
Backwash or reject flow 0.04 MGD
12. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including
latitude and longitude}
Little Creek Cove - Lake Norman/Catawba River
Page 2 of 4 C-WTP 03/05

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Lincoln County Public Works
Water Treatment Plant Discharge
NPDES PERMIT NCO084573
Quad Map: Denver
Scale
km 1
ml
Latitude
35"
31'
38" N
Longitude
81"
00'
19.1" W
Basin: AU403050101150030
Receiving Stream: Little Creek Cove/Lake Norman
Stream Class: WSIV-C
Ion

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
13. Please list all water treatment additives, including cleaning chemicals or disinfection
treatments, that have the potential to be discharged.
Liquid Alum, Sodium Thiosulphate, Caustic Soda
14. Is this facility located on Indian country? (check one)
Yes ❑ No ED
15. Additional Information:
Provide a schematic of flow through the facility, include flow volumes at all points in
the treatment process, and point of addition of chemicals.
Solids Handling Plan
16. NEW Applicants
Information needed in addition to items 1-15:
New applicants must contact a permit coordinator with the NCDENR Customer
Service Center.
Was the Customer Service Center contacted? ❑ Yes ❑ No
Analyses of source water collected
Engineering Alternative Analysis
Discharges from Ion E'nchaug+e and Reverse Osmosis plants shall be evaluated using a
water quality model.
17. Applicant Certification
I certify that I am familiar with the information contained in the application and that to the
best of my knowledge and belief such information is true, complete, and accurate.
North Carolina General Statute 143-215.6 (b)(2) provides that Any person who knowingly makes any false
statement representation, or certification in any application, record, report, plan, or other document files or
required to be maintained under Article 21 or regulations of the Environmental Management Commission
implementing that Article, or who falsifies, tampers with, or knowingly renders inaccurate any recording or
monitoring device or method required to be operated or maintained under Article 21 or regulations of the
Page 3 of 4 C-WTP 03/05

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
Environmental Management Commission implementing that Article, shall be guilty of a misdemeanor
punishable by a fine not to exceed $25,000, or by imprisonment not to exceed six months, or by both. (18
U.S.C. Section 1001 provides a punishment by a fine of not more than $25,000 or imprisonment not more than
5 years, or both, for a similar offense.)
Page 4 of 4 C-WI? 03/05

Lincoln County WTP, Lincoln County North Carolina
Raw Water Intake and Treatment Schematic
Raw Water Inntake
( Up to 3.99 mgd )
IFlash I
hlistrs r
Flocculators
Sedimentation
Basins
Mixed 4sidant
Injection
(21ng/1)
Multi -Media
Filters
Alum kiection
(AN-g. 16nig/1)
(Based on Turbidity-)
Caustic Soda ( When
needed for PH adj.)
(AN-g. 0.; mg/1)
Clear
Wells
Permit No. NCO084573
To LC Distribution
System
Flouride
Caustic Soda (Finished
Water PH adj. )
Phosphate (Corrosion)
Injection

Lincoln County WTP, Lincoln County North Carolina
Waste Discharge Schematic
Line from Wet Well to Clarifiers
Clarifier 14 j-►I Clarifier
Discharge Luce to Lake
Sludge Line to Doing Bed
\'swum SluJge ftimp
Permit No. NCO084573
Sludge /
Line Drain
to Wet to Wet
Well Well
Polymer Tank and Puw I I I I Sludge Drying Bed
Sodium Thiosulfate
I
(Added at filter backwash as
needed to dechloruiate filter
Waste Line
water)
from WTP
Multi media
Filters.
Sludge Discharge from Wetwell
to Drying Bed via Sludge Pump
To Landfill
Supernate Discharge from
Clarifiers to Lake
Drain

Lincoln County WTP, Lincoln County North Carolina Permit No. NCO084573
Solids Handling Plan
Solids from the WTP, once they are dried out (See # 8) are loaded onto a roll off
dumpster with a small front end loader and taken to the Lincoln County Landfill to be
used as fill dirt.

Co
*_ COUNTY OF LINCOLN, NORTH CAROLINA
CA 115 WEST MAIN STREET. 2NV FLOOR CITIZENS CENTER. LINCOLNTON. NORTH CAROLINA 28092
DEPARTMENT OF PUBLIC WORKS
PHONE [phone]
FAX [phone]
SLUDGE HANDLING PLAN NARRATIVE
While sludge is pumped from the clarifiers, it is mixed with a polymer and sent to a vacuum
bed to dry. Once the cake on the vacuum bed cracks, it is removed by a front end loader from
the bed to allow for further drying. Once the sludge is sufficiently dry, it is loaded by the
front end loader to a roll -off container. This container is taken to the Lincoln County Landfill
and used as fill dirt.
Barry L. McKinnon, P.E.
Senior Utility Engineer