NC0084549_Renewal (Application)_20191125

701'4 STA..7't'``
ROY COOPER ,, --,}
Gtn[•rnor `�
.y1 1
MICHAEL S.REGAN . M•.�•.
secretary ,"',° `", '
LINDA CULPEPPER NORTH CAROLINA
Director Environmental Quality
December 03, 2019
Charlotte Water
Attn: John C. Hubert, Chief of Operations
5200 Brookshire Blvd
Charlotte, NC 28216-3371
Subject: Permit Renewal
Application No. NC0084549
Franklin WTP
Mecklenburg County
Dear Applicant:
The Water Quality Permitting Section acknowledges the November 25, 2019 receipt of your permit renewal application
and supporting documentation. Your application will be assigned to a permit writer within the Section's NPDES WW
permitting branch. Per G.S. 150B-3 your current permit does not expire until permit decision on the application is made.
Continuation of the current permit is contingent on timely and sufficient application for renewal of the current permit. The
permit writer will contact you if additional information is required to complete your permit renewal. Please respond in a
timely manner to requests for additional information necessary to allow a complete review of the application and renewal
of the permit.
Information regarding the status of your renewal application can be found online using the Department of Environmental
Quality's Environmental Application Tracker at:
https://deq.nc.gov/permits-regulations/permit-guidance/environmental-application-tracker
If you have any additional questions about the permit, please contact the primary reviewer of the application using the
links available within the Application Tracker.
SincerAg, ,
VS r
Wren Thedford
Administrative Assistant
Water Quality Permitting Section
ec: WQPS Laserfiche File w/application
DEQ�I North Caro ra Department of Er roc mental Quality I D+vs�on of Water Resou roes
r,./ Mooresv a Reg ura Off ae 1910 East Center Avenue,Surte 301 I Mooresv se,North Caro.na 28119
704. 3-1699

CHARLOTTE
WTER
REGENED
NOV 2 5 2019
November 18, 2019
Division of Water Resources
WQ Permitting Section -NPDES
1617 Mail Service Center NCDEQI0WRINPDES
Raleigh NC 27699-1617
Subject: Renewal NPDES Permit # NC0084549
Franklin Water Treatment Plant
Mecklenburg County
WQPermittingSection,
Charlotte Water would like to request renewal of NPDES permit NC0084549 at the Franklin
Water Treatment Plant. The current permit is set to expire May 31, 2020. Enclosed is the
completed NPDES Permit Applications Short Form C.
Also attached to the Short Form C are:
• Solids Management Plan
• Plant Process Flow Schematic
• Outfall/Discharge Location Map
If you have any questions, please contact me at 704-399-2426 extension 222 or Gabe Sasser at
704-507-5267.
Sincerely I
i,, C. AU-C.----1
John C. uber
Chief or Operations
City of Charlotte
Charlotte Water
Charlotte Water 5200 Brookshire Blvd,Charlotte,NC 28216 charlottewater.org
Operated by the City of Charlotte

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants RECEIVED
Mail the complete application to: NOV 25 2019
N. C. Department of Environment and Natural Resources
Division of Water Quality / NPDES Unit NCDEQ/DWR/NPDES
1617 Mail Service Center, Raleigh, NC 27699-1617
NPDES Permit Number NC0084549
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 Charlotte Water
Facility Name Franklin WTP
Mailing Address 5200 Brookshire Blvd.
City Charlotte
State / Zip Code North Carolina / 28216
Telephone Number (704-399-2142)
Fax Number (704-393-9163)
e-mail Address [e-mail]
cr
2. Location of facility producing discharge:
Check here if same as above
Street Address or State Road
City
State / Zip Code
County
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 City of Charlotte
Mailing Address 5200 Brookshire Blvd
City Charlotte
State / Zip Code North Carolina
Telephone Number 704-399-2142
Fax Number 704-393-9163
4. Ownership Status:
Federal ❑ State El Private ❑ Public
Page 1 of 4 Version 5/2012

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
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) (i.e. groundwater, surface water)
Surface Water
7. Describe the treatment process(es) for the raw water:
Raw water storage in on-site reservoirs; The initial raw water treatment includes the addition of
powdered activated carbon followed by aluminum sulfate for coagulation, applied at the head
works of the plant. The water then passes through flocculation before entering the
sedimentation basins. Chlorine is added just before filtration. Following filtration, lime,
fluoride and chlorine are added to the water prior to flowing to clearwells.
8. Describe the wastewater and the treatment process(es) for wastewater generated by the
facility:
Spent filter backwash water and basin blow-downs are sent to ta surge basin; controlled flow to 2
clarifiers, basin effluent flow is treated with a polymer to floc solids for settling in the clarifiers;
clarified water is de-chlorinated prior to discharge to ta tributary to Stewart Creek; Solids are
transferred to a residuals basin, pumped to a pair of thickeners, dewatered, using belt presses
and removed using a private solids-handling company.
9. Number of separate discharge points: 2
Outfall Identification number(s) 001, 002
10. Frequency of discharge: Continuous ® Intermittent ❑
If intermittent:
Days per week discharge occurs: Duration:
11. Plant design potable flowrate 132 MGD
Backwash or reject flow .680 MGD
12. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including
latitude and longitude):
Tributary to Stewart Creek
13. Please list all water treatment additives, including cleaning chemicals or disinfection
treatments, that have the potential to be discharged.
Alum / aluminum sulfate Yes
Iron sulfate / ferrous sulfate No
Page 2 of 4 Version 5/2012

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
Fluoride Yes
Ammonia nitrogen / Chloramines No
Zinc-orthophosphate or sweetwater CP1236 No
List any other additives below:
Chlorine, Powdered Activated Carbon, Lime,
Liquid Linear Phosphate, Sodium Bisulfite
14. Is this facility located on Indian country? (check one)
Yes ❑ No
15. Additional Information:
Provide a schematic of flow through the facility, include flow volumes at all points in
the water treatment process. The plan should show the point[s] of addition for
chemicals and all discharges routed to an outfall [including stormwater].
(Included in the back of the application packet)
Solids Handling Plan (Included in the back of the application packet)
16. NEW Applicants
Information needed in addition to items 1-15:
New applicants are highly encouraged to 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 Exchange 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.
John C. Huber Chief of Operations
Pri ig-d name of Person gning Title
` 1 11/18/19
S* ature o Applica t Date
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 Environmental Management Commission implementing that Article,shall be guilty of a misdemeanor punishable by a fine not to exceed$25,000,or by
Page 3 of 4 Version 5/2012

•
Franklin Water Plant
Sludge Management Plan
The following is a narrative description of the sludge management plan of the Franklin Water Treatment
Plant Alum Residuals Facility. It describes the flow of the generated water treatment plant alum
residuals and the water used to convey the residuals to the Alum Residuals treatment process.
The Franklin Water Treatment Plant Alum Residuals Facility processes the accumulated water treatment
chemical precipitate (aluminum sulfate)from the Franklin and Vest Water Treatment Plants for removal
and clarifies the water associated with this precipitate for discharge. Franklin Water Treatment Plant
basin blowdowns and filter wash residuals are delivered directly by gravity flow to the Alum Residuals
Facility's surge control basins;Vest Water Treatment Plant basin blowdowns and filter wash residuals
are shipped via tanker truck from Vest to the Alum Residuals Facilities residuals basin.
The Franklin Water Treatment Plant water and solids mixture is temporarily held in two surge control
basins to prevent large surge flows to the clarifiers. Surge control basins effluent water flow can be
treated with a polymer solution as it flows to a pair of clarifiers. The solids that are present floc together
and readily settle in the clarifiers. The clarified water flows over the clarifiers'weirs into a splitter box
for dechlorination and is discharged to a tributary of Stewart Creek.
The solids that have settled in the clarifiers accumulate until they are returned to the residuals basin.
The unthickened residuals are temporarily held in the residuals basin until they are transferred to a pair
of thickeners. During the transfer, the residuals can be treated with polymer to aid in the settling of the
solids in the thickeners. While the transfer is occurring, any clear water that flows over the thickeners'
weirs is returned to the surge control basins for removal through the clarifiers.
The residuals solids settle in the thickeners. The thickened residuals are then pumped onto two 3-meter
filter belt presses. The solids can be treated with a polymer prior to being dewatered on the presses.
The press filtrate flows to a sump pit where the filtrate is pumped to the surge control basins for
removal through the clarifiers. The solids are scraped off the presses and the press cake falls onto a
conveyor. The conveyor delivers the press cake to a waiting trailer. The trailer hauls off the press cake
solids to Irwin Wastewater Plant for storage. At this site,the alum sludge is mixed with bio-solids from
the City of Charlotte's Wastewater plants. The solids are then land applied under the City's Class "B"
land application permit#WQ0000057 Version 2.0.
There is also a secondary discharge under the same permit that is monitored monthly. This stream is
not part of the alum residuals process.

•
�,, /t .ter � .w r •y�'�.. i ' . t r.� S� /
-r - .i:-: ;t!� �i ,, �� A _ Th_ 0- r �-AV,\a
jir
` �✓i •sue-_-:e - S?'$-'4:'�r_4• ) �"
k ft,...C.V,
. ;=; �.: a — `` •1, I
•
,,,,, 4,,,;,,v-: :*t...-.-4..-„ft„,-;:::4";• -- ..-:,*-.:--„,,,f,,,:-,',. -7,--,A\
ort.le
hitertz,44,A. 4', 7,41 %-----,ITO.ffli'i;-,',, ,---!,.-'.NsfivAW.oc,:..a.,,r-D1,..-4' rA
jkleifir
.diciii `\ i‘i 4, ,
i. Wit. •1f' .. :,,-„- �-' . _-Z---- `` � � � 1.
i*-.41Ver‘4‘1-P'-'-'" z‘4-__0--7*" .i..;,.V4.•`?-r\''''?:\''., '— - trce_ r_j
;:tva,-- migNIthi_ _ \", -rp--..„•,..- . %. .- _., . %.,/ \Tel
Nirla •11114"—Nti - --------1441'44-1186'1". -/„. -.7-8.,,-- "tri.-:;,e.•.- : -4>liNik--
r<e 1,-"-:-- -1Th"----Ir-- ' *44:4--sk.,V,': .........,r
`Cir)\,‘ 4n , 1.„._,..,.t,7,::::„_.._s,iv.:1
.......i.„.14 \i
-g. , ...:.„..1.„_
:tuvoir,.,,,tiii...!,<11),..... _ ,0 .
, i ,. tas,
, Not. 1. ,x______J., i___
_____,
_•,76... ..,....„ ..
, _ ,
�� -,A,!. ...-,_-„:-
s i=�.•? ;!'... / i.._( �_, !• ✓- ma`s-v,, "-. .. *1.. t
.,..ta_ k.,t4
:A -
•��� FV.:-'34 '`• `$ .+ � ..Jim-� „5 ;-,-... . `
,s• a 111���� SI
_9j, 4' ter;- - i�F0.
\ TyJ„�/f
'' ' •- fit'•' ✓ ' .4'WO Outfall 001 &002 IL 1� " ' !! �J :
:a=± � ��'"`` zF �: y,. [flows south] 1 ,kee
_.z.:a...,''' ,.....y,-,...X
Vi-""�Y�r ,—fix -P i,_X k✓�`\, =:!'"
" �'}Y sty-- �` f• -:S•; \ i .:%•f�+�,, �! � �'�� /�) I ) �
-'' r 4� ‘11 yin ,zc'S _ + �'• ��� 4L 4.
Brookshire Blvd �'` ,� ,' t:�� 1‘40.-,4. \ �v z•
.. �y, .,� ��>y
VW:WI' .116,..s jorha• ...40_,„, 110:,:.._ _4-..,,..0-44- , ..#5,, ..._ ____,00,.s‘• -z:r.- :,;1;-,.--- -",- .1"'''.:404"/"„ - - ":7',..)4 A
��1 •
Approximate '� '. ` .. a• -• -7:3 �'
"� Facility Boundary �_}�•. 1_.t7--,_'cam ---.w:vni� " NiorN...:46,4;,,4,
�' \ f `, „..,_ _..„,,, 1 y � 3.. `
•
rip , ....::
` UT to Stewart Creek '' ?-: `' 1� ,N..- '° ' ,--,, .
i•
' southeast] �''�- `; ?: :t > ��na�:r o, ,- r. .- _ ',,•
[flows sou as ] '-�,..;, 1 �. _-,f -
s.
a , �_t254,1m. . , �� 'd �t�2�'' t � iip1 z+r''r�s >r• , ` y s� :�
�_ '� FEZ ;�g ��`� �' + l S" 47 f t>> ._,i
? ,•6pY". �•}' 4dsB
..v.
„Jo: v.i�••'$'- .tea 5.:.�s` b.�_cgA+.. i
/ `. , .ohs'°,sr_ ,7 .z% .� h t
3 f" y Jam" —L - �' ✓� % .�til'.`.p '�''l�yv--5,�/ � 't,t0`� ��. `- \� - •9.1
? ' o°'J4Y �'SI ram,!•Se�a7�'°e \ �:5 ' i = r�� may.�, Fi � !' a
it,s ,r`' - - - %a:;ii fC, ..t 1 ,v1\, ,,if r �- ca j✓ \ r , 0tilt k , ,
F,E, Z, .•.i \ � .,,,,..„.• ..a ' •• i ' Jam/' � .y' y Oy �ti`_ i4811
• ,��' ,,• ' ;. ' , f. ,,,¢- Stewart Creek 1j ✓..
$..1.:eptr,' ;44 Si%• o r. ' Y , i_ , ., �. day O tt r\
s of AR 4a'`4it is—.,-- ,}�� ...,.s �,s 's �i;�.F. • ' :'` � �F " "�ii"3 x+ti, "v .:� -.,
Charlotte Water Facility
Franklin Water Treatment Plant (WTP) Locationagiaa„
5200 Brookshire Blvd, Charlottee NC 28216 Scale 1:24,000
Receiving Stream: UT to Stewart Creek Stream Class: C
Stream Segment: 11-137-1-2 Sub-Basin: 03-08-34
Drainage Basin: Catawba HUC: 03050103 NPDES Permit NC0084549
Latitude: 35°16'48" Longitude: 80°53'09" North j,.t�
State Grid/USGS 0uad: F15SW/Mountain Island Lake,NC 1 Mecklenburg County

I
Franklin Water Treatment Plant
Process Flow Diagram as of 15 January 2018
lb , , ,
dare
Carbon Chbnne Alum Chbnne Chlorine Flounde Lore
ooside Clearwell Clearwel
L J L J 2
6 MG 12 MG
36 MGD r 36 MGD High Service
Sedimentation ► ► Pump Station 1
Franklin Plant Raw Water Filter Module
Reservoir 3 f Pump Station 1 Motlule el 128 MGD
250 MG 198 MGD brasher] Clearwell Clearwell
Water 3 4
• 4 MG 4 MG
Catawba Catawba 24 MGD _� MGD (IMG
pt bleyS�imenetion ► Fltet:r Motlule River Pump Water
Station System
Clearwel Clearwel
Finished 5 6
Franklin Plant Raw Water water
Reservoir 1/2 ►, Pump Station 2 I 4 MG 6MG
72 MGD _
Ilr — Pump Station 2
Module ter 114 MGD
Clearwel Clearwel
Backwash 7 8
• Water 6MG 6MG
Sed Basin
Residuals
Sodium
• esulrne
Backwash Water Clarifier Clarifier
—1► Lagoon 1 _40. 1 Effluentuent —
•
700 kG 333 kG
i 0 Dechlonnaaon '— Stewoart
Contact Chamber Creek
Backwash Water Clanfier
-+ Lagoon 2 2
700 kG 667 kG
• S Residuals)
W
f-' .f,... Clarifier
Polymer PolymerSludge
hickene Residuals
1 1 Basin
• • e• ckene 90 kG 450 kG
r Dewatering
•
Land Apprceton Facility
Thi Unthlckened
2 Residuals
Thickened 90 kG
Residuals