NC0044164_Renewal (Application)_20200109

NNISkt\
ROY COOPER i lor:.-7Grrvetriur l
MICHAEL S.REGAN w R .
Secretary
LINDA CULPEPPER NORTH CAROLINA
nh;r;rnr Environmental Quality
January 13, 2020
City of Lenoir
Attn: Radford L. Thomas, Dir. of Public Utilities
PO Box 958
Lenoir, NC 28645
Subject: Permit Renewal
Application No. NC0044164
Lake Rhodhiss WTP
Caldwell County
Dear Applicant:
The Water Quality Permitting Section acknowledges the January 13, 2020 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:
httos://dea.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.
Sincerelly,, ,
ep
Wren Thedford
Administrative Assistant
Water Quality Permitting Section
cc: Central Files w/application
ec: WQPS Laserfiche File w/application
North Cara ns Depertrrtrt of Environments Qus;!t I Divson of Water Fesouroes
D E� f Ashev s P.eg�ns Off oe 1209D U.S.7D H•hr.a} I S annsnos, North Caro rs 2fi7?S
t�.;.......� /`� S28-29E-4503

�F!(AlO
MAYOR
CRY
SCOTT E HILD BRAN CITY OF LENOIR JOSEPH L.GIBBONS
NORTH CAROLINA CITY COUNCIL
J.T.BEAL
T.H.PERDUE
J.I.PERKINS
R.S.PRESTWOOD
D.F.STEVENS
C.D.THOMAS
B.K.WILDS
January 9, 2020
Mr. Wren Thedford
NC DEQ—Division of Water Resources RECEIVED
NPDES Unit
1617 Mail Service Center JAN 13 2020
Raleigh,NC 27699-1617
NCDEQIDWRINPDES
Dear Mr. Thedford,
The city of Lenoir requests the renewal of NPDES Permit number 0044164 for wastewater
discharge for the City of Lenoir— Lake Rhodhiss Water Treatment facility. Please find enclosed
one copy of the completed and signed application form.
Since the issuance of the last permit, the facility has added two new filter basins and a
mechanical pre-treatment Acti-flo system that uses Alum and an anionic polymer. These
systems were brought on line in 2019.
If you require further information or have questions regarding the permit application, please
contact me at 828-757-2219 or by email at [e-mail]. You may also contact
Kevin Matheson, Water Treatment Plant Superintendent, at 828-757-4460 or by email at
[e-mail]. Thank you for your assistance.
Sinceldy,
ka odf"rd L. Thomas
Director of Public Utilities
Lenoir AlaNduels
Lenoir
POST OFFICE BOX 958 • LENOIR, NORTH CAROLINA 28645-0958 • [phone]re,
2008
2008

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
Mail the complete application to:
NCDEQ / DWR / NPDES
1617 Mail Service Center, Raleigh, NC 27699-1617
NPDES Permit Number NCO() 4/-I b4
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
Facility Name Ci-ty Of LJ=11o11r. - Rhpci USS UJ,IerTYe neat rete �I
Mailing Address p 0. Box ci 5? /
City L xio i r
State / Zip Code F Y� e2 b 64
Telephone Number (gg ) 757-1 -I 0 RECEIVED
1I
Fax Number ('2� ) 757-`1'4I JAN 1 3 2020
e-mail Address r 1410 t5 (i, . ,€ylolr. tie . (As
NCDEQJDWR/NPDES
2. Location of facility producing discharge:
Check here if same as above ❑
Street Address or State Road 11474- Wafer Works RA.
City G-rz11i Rik
State / Zip Code I V C I z 63()
County CALD E LL
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 Lenoir
Mailing Address P.O. Boy 95
City O1 r
State / Zip Code NC / 0344-
Telephone Number (g2g ) 757-- 11-460
Fax Number (g2� ) 757.`/ I
4. Ownership Status:
Federal 0 State ❑ Private 0 Public V
Page 1 of 3 Version 6/2017

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
5. Tye,treatment plant:
Conventional (Includes coagulation, flocculation, and sedimentation, usually followed y
filtration and disinfection) With c:11+1onal MedaniccJ Pre-frad-w►&+ (/\efi'410).
❑ 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)
e R ss- ext-co 1 ba i Ver p hiss
Raw um,-ter l5 10 l �Vom l�n
7. Describe the treatment process(es) for the raw q ter: is1><
{ro +11e /Ylecha.nieal Prztrea�vne4 ur<<-ES ijhere, Al vrt io c pol,ivner, 0 bo . Se it._a r
Co& t�la-ior, •Ploecul on. Se l'tmen ovx is -Shen Dpe� rm to di rat r d t
( & ) e silos uen dined wi-4h Suds wt or' lord -Eor c5etofe1 jO
S -the n -1 +e( an , 't �i l Eras is a vv ,, t(it
rtdv � r world&+ 0r, IA 4 aA ti 1 JaO cis Y1Pces50.Y'�,A"b Jon
It��er is. ti+ea� {real wife (-tzS; F4, £O 33So bore, be1nc, �ur"pe� ink �►e_ c,ts�ri u
.-ter
dosed. wit" Corroskon tvOnibi�ing zfne_-Cams Spie wt.
8. Describe the wastewater and the treatment processes) for wastewater generated by tkie
facility: Wa5tewetier eo145isks rlvmos'IQ_ oc -ailr kwash. tauter cncl San and
$edlw,en-t
ud Co l feciect 'vo►ti. 4t 1 ma-Vat_ sy � iv\ `fh2 S��vnert °v�
�sl �
basim We have. -Iwo cyl�ndriro eo►nevete �,oldtn9 -Funks: a O.4Mer �kc i d
Latter -funk av\d a 0. 6MC� (zlur+2�SAnct S( je tank. SuPereta�a 1�9
-tile -funks 1n-To c� lagoorn op e, deelhlorrivvd, ���k Nat�.$o ,
as generated id, Aluen+ -On ro�,5 uv\ o�� ll P'P_ Col back 1►n lake 4 h(ss.
Ana �5 d(SCharge.�. �s �. i
9. Number of separate discharge points: 1 Outfall Identification number(s) 001
10. Frequency of discharge: Continuous Er Intermittent ❑
If intermittent:
Days per week discharge occurs: 7 Duration:
11. Plant design potable flowrate 12 MGD
Backwash or reject flow O. 29 MGD
12. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including
latitude and longitude): Lakes Rk 11 hi 55 - Cudaw ba
13. Please list all water treatment additives, including cleaning chemicals or disinfection
treatments, that have the potential to be discharged.
Alum / aluminum sulfate Yes No
Page 2 of 3 Version 6/2017

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
Iron sulfate / ferrous sulfate Yes No_
Fluoride (Yes ) No
Ammonia nitrogen / Chloramines Yes 0.12)
Zinc-orthophosphate or swee.twater CP1236 Yes No
List any other additives below:
Art on .0 �l\imeX;J`�oc�auvn NAP �ori�e,,5odlurr>t g IOW _, Carus 3350- ne me hosPhat�
We, hawe. -fie vxbil►fy -fv Feed Poikssium Perw►arla ede. and ,C .ivated. Carbon of bte raW
ula+er inickke , but ha.Ve- hot -N -{ ern sinee_ no) deeper wer ink WaS ottline in �l I .
5o u.v n Heel roxi de_ is coed -for Pt{ adjvstvnevnt and ur al ldo li ni4y if needed 4ar PYe-tru wlea+
14. Is this facility located on Indian country? (check one)
Yes ❑ No Tj
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].
Solids Handling Plan
16. NEW Applicants
Information needed in addition to items 1-1 5:
New applicants are strongly recommended to contact a permit coordinator with the
NCDENR Customer Service Center.
Was the Customer Service Center contacted? ❑ Ye ❑ 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.
R.15464 L-. I hoVY1C15 .b a 11+ li-tle5 Direedor
Printed name of Person Signing Title
ld-32,_ 2_.%)
f'Signat�� o Applicant 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
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 3 of 3 Version 6/2017

Sludge Management Plan for Lake Rhodhiss Water Treatment Facility
City of Lenoir, North Carolina
The City of Lenoir's Lake Rhodhiss Water Treatment Facility is a Conventional
Water Treatment Plant, with a capacity to treat 12 million gallons per day. We
also have added a mechanical pretreatment Acti-flo system in 2019 that uses
Alum and an anionic polymer to mix with sand to more rapidly settle the floc
before going to the sedimentation basins. Sludge produced by the plant consists
of alum sludge and some sand from the coagulation/ sedimentation processes,
and solids removed from the mixed media filter beds during backwashing. Our
facility has two cylindrical concrete thickening/ holding tanks to aid in sludge
management: a 400,000 gallon backwash water tank, and a 500,000 gallon alum
sludge tank. Filter backwash water flows to the 400,000 gallon receiving tank
where solids are thickened and released to the 500,000 gallon alum sludge tank,
and the clear supernatant is then decanted to the discharge outfall. Alum sludge
is mechanically removed continuously from our sedimentation water treatment
basin via a track-vacuum system and flows into the 500,000 gallon alum sludge
tank. Here solids from both tanks are thickened mechanically, and when
necessary chemically. The sludge/solids are then transferred to a City-owned
tanker truck and transported to the Lower Creek Wastewater Treatment Plant
where they are mixed with the biological waste sludge. The sludge is belt pressed
and the solids produced are then hauled to the Sanitary Landfill for disposal.

Ci4-y of 1_,...noiy• lArrP
-.4
--.1. ....._
.-, -4
-........ I
4,
c.I fr
-4 - -4
FNI
— E cn r`•g
TOE MEV:1104 1,,I.1,-I IC'3
d 0..z.-..s
tot.f ay:ti.M,,, ...t :‘,.
ii 1 r •CT) m is , [Ti El , T II' TOC ELEV:1099.. -..... d
--,
___
el ...... i . I •i g ,
CHOMCAL FEED 36"MPT EFT1JJENT f/-- ';‘)I cl-, ;
RE-RO.MED I IIIINIII c., i 4 8
.. ;::::::::::::::::::::::::::::::•::: , .
_. ...t,,..t.t,tia.I.M
3111.FILTERED WATER
MECHANICAL -r
.-."v ItIttitt
PRE-TREATAIENT .MM miX r1C<CULATC, SE,VEtt-Ant..t...,::::: I ALTERS
I 12-MP "._Lt_ gi (4 EXIST.) CHEMICAL FEED
(2 NEW) ; RE-ROUTED
gl
1 i
st,tmr:mkt,
If It.LI, A tit •
I I
I •
: I .
5 iAci-D FL-OW 1 —......
..,..14 f/A0M4514*Pant i
...... t 'a•.Mt.I t, .
. :
hitOM:St:
RA*WAMR WA,AND 1
i cA,CS 1.1,
----- TO--,t:,Tr.
- I
1 tt.,t3d-
§ _.
tutri:wA,:i FANt
EA.....
_ ••
4.'..U••••• 1 I
_
,
x .
. r .
\/ •
I
1
500,000 GALLON
— ,----- ,,zr
ALUM SLUDGE TANK
MODIFIED I.
Mtt..1(1,i ACMG',AMON ''—i=- M*
FLUME
0.1''' 0.3 mecID. Wostekihr FloW
al- COI
agfadt ,,t1,1-1iF3
C°C r4 1 rtOtes: 35.7g3-6/3 hi i_aijittde
PROCESS FLOW DIAGRAM —?l• 4C))69 14/ Lorb3;144de
NOT TO SCALE

LAKE RHODHISS
. ,, .. .
WATER TREATMENT FACILITY
P
- So Ss f CITY OF LENOIR
,.
FACILITY INFORMATION
j eL, \,IJA+4k S App I."J y L'''
DESIGN CAPACITY: 120 MOD
-----__
,-'
AVERAGE DAILY FLOW:4.5MGD
''' I'V'WITATIeVa ,1311 t?'.il,L. ,
GEOGRAPHIC AREA SERVED cC1ATLyDwELOF LENL COCOUNTYy
III
JOYCETON
rffges.4,v,..a.mpc.it.1-,co;, ' -57501,',IMMERMAgg:ZirVer:- ...i ' ,.,.
4;''
HUDSON
A" .. ,.
‘: 04 SAWNI1J-S
BATON
-,,,qttyAk„.•
0 •CA-1,4t4,1114,''''-:.-.R _t/ K_ il
6i..
,
Al
0 ,-..0.-''%---'-.I,,;,.',L.'.e:..,k.F,.:,.%,7lJ.,-mk,,',V-;`;i-4',ID V&It?1,L4•,_r'.t::1f.-,4'_
-
p
.,;•..-,,-0•,":'-_..ft,.V,i 4,,,,..,!,,,•,-3.'%i r1AtAN C AL OPERATING
-0 COST: S.441,
c0/DR1 3,s6 k 14
lAiik) 0k4c04 /.'i4- /0(2d.
-g I. Li-i'1 6ct W:. tywe 41,.: ---,1-0-0,, ,....iik, ,t. 4,,-..:, 4,47...,.. .1,,.„„w• .,,,0!‹.-:.„It,••. ...A.,,,,,--i,,:..„.,,,
-•'.•. ;
Nt%,-- I o g t-a f ' ''''''' ,,,T., , "iiii_VZ4* .•.(J.,z't4,-.
• Z:- Or._ftaT,L._,-.=!;.,, - .‘77.„,4 ,1..,.. ,:t..,....,:.....-
,,,,,A, ' 1,:,:=,,d_tA '.';tc•:>-.6.t,IV,i, _,
•,..,.
. ," .3.,; \ rtp; Aig".C.,-*-,,I.' • ,,
., .
.,....,,,,•-;:::: ,-.,, „c'.&,,,,*.*
egl,°N. • Vk'',,,, _.4_,,,.,c.-, .,,ft,o.A ,,-,i,vgiv.4-
7--• , ,,...,--. c \ LAKe V.‘4'.....etk','?",,.'itg.,1 ' '',4 a'
'',"7!-:,<_=.„1..... ..:4:-'4:y::;,:•::;:k4 ''''' '''''''.?..\ . '.9.°°°'''''' .• f tV41 TI'D‘°171171".4''''''d *-.1:4' . 1.11261\71114‘11'2-':-44' ' •
I ';;'...`,''.''I' .;'-,-:',-\ .-,„... 7't&Z'-•?-de
• •
' ''"::::. ' - ''--' "t:-,:.•-+---5,-•-',i
s'-',,-.-4,9"•,,',,tn-- ',. ,
;NI-al,'.11fA,'4-'•-,o,A',„.,10'
Vc.',10:q59.• 4.%, ,Ak't.tg7 x...k..• irrio.--6:ag,<..1,;,
.i.-•:. '-,•;,...•.,:.-._,.-- , --,.c. .,•• ', .. ok.,„.z.,,,„4, . ,,c...,
'. '.:14, ;;•:::'''''''''''.%;'::::''',''',\ \ •-,,,:".*t.Y
• •
$
::-,'i:N''4-''''.-::,:•-:::,_:--;:-,-'..•-,•,..._\
-:il.:I•,:e.1.,,t?Z--,:;:i:.-:::::,?:•---'• \
_ %I*-,`,-,1-34•1':"J:ii?"•:-r ':.-7',:*...-, \_
•. i•ID . *-- .74,-.1,-,.-- •,...„ fj4p."54,Ali,_. •A''
, , ,--,
ze-4 r_ler4---R-,.---- -•,. ---.
„,,,-...:,,, - , -_?_.., \
'..‘.':-.I:::•:';'7_,:7.1i:r1..'',F ii?„7.7-;7:,;-.;:;:'. _ \
,A• ------.,,„ ..,' .k ‘
.'-'-'-e-
...•.,":;I;'.s:',.;;.,`,.:.,' ,I'2I.,:1,:.,,.:.,.., ..:.
-6I cik.k-
v- 0‘ - ' " -;.--,-3,‘.' ••. : ,-, \
r'' MCG111 - ' '1 -
L._