NC0089923_Regional Office Historical File Pre 2018

r
rt rr t
March 1, 2023
William Deal
Charlotte Water
5100 Brookshire Blvd
Charlotte, NC 2216-7
Subject: NPDES Application
Application No. NCO089923
Charlotte Water
Mecklenburg County
Dear Applicant:
The Water Quality Permitting Section acknowledges receipt of your application for a new NPDES WW permit, including
supporting documentation and your check number 106 in the amount o $860. 0 as payment of the application fee.
These items were received in our offices on March 17, 2020, Your application will be assigned to a permit writer within
theSection's NPDES 6S permitting branch. The permit writer will contact: you if additional information is required to
complete evaluation of your application. Your timely and direct response to any such request will help to expedite the
review process, Please note that acceptance of the application does not guarantee a NPDES permit will be issued for the
proposed activity. A permit will only be issued following a complete review of the application, concluding the proposed
discharge is allowable per applicable statutes and riles.
Information retarding the status of your renewal application can be found online using the Department of Environmental
Quality's Environmental Application Tracker t;
rivir nm n I wa -tracker
f you have any additional questions about the permit, please contact the primary reviewer of the application using the
links available within the Application Tracker,
Sincerely,-1l
f
Wren Thodford
Administrative Assistant
Water Quality Permitting Section
c; VV PS taserfiche File w/application
"ems -Ilse

i
NPDUS PERMIT PLICi TIO - SHORT FOR - G
For disc hargc s sr,soeiaatvd with grounrlwater tr li n nt C s.,thttes=
Mail the complete applioation to:
i`. C. Department of Fnvironment and Natural Resources
Division of Water Quality lit NPDES Unit
1617 Mil Service Center, Raleigh, MC 27699- 61
NPDES Permit b NCO
,.....,. _,.... ». ., ,. . , i
If you arv. crtrrlrle,tarati this fiar-rxr in corrr,rater use the 7AH tergj or the up down arrows to nmut,, f"r°orri one
field to the next. To c~ttcMc* the c lktic yourA rttc>use on, top of the box, Otherwise, please pri t carirJjle.
1s Contact information:
tion
Owner Nanie Charlotte Watet
trr'.ac'i 'tY Name Charlotte Water
MailingAddress 5100 Brrvcrokshirc i eaai[evarrl
C"lit. a1.r1ottr
State /Zip (,'ode � Nth 28216
aax-Wrra ber ( }
e rrrra'sl Addrt w leaf i,ch ar1ott.cy.tacy.at
. Location of facility producing discharge:
(,'heck here it satne aas taticrm
Street Address or State l caaei Baxter Street
City Charlotte
state Zip Code NC 28204
County Me°c,lcie$zalaurgl
3. Operator Information,
talc toe of tl2e,fir-rrt, cortsaaltcarct or other a:ratitlt that crlrarcale,s the fiacilit , (Note that this is not rte/errs`ng to the
Name &'inders Utility
Mailing Address 6801 firook,�hire Blvd,
CitytW lraarleatt
Fax r atrr ber
.. Ownership Staters,
Fed,eral
Pogo 1 of
taa.te
i'u btia.
C,.G 310

E
NPDUS PERMIT APPLICATION - SHORT FOB - Gig
t�r�r rii�;<'Iaa„r<.<, <s ��.��c;ittte.ci s�ifla ggt«c�aasrc[a���i�+rle°e.:�f�at�rrif ltac.itltir�;r.
. Products recovered,-
GasolineDiesel l fatcl solvent's
t^rs[.s � Other
r` .
6. Nu leer eaf separate discharge e points:
utfaall Identification number(s) Pool,
Frequency of discharge: Continuous Intermittent
If intermittent:
Daggs per work discharge occurs, 6 _ Duration- 1,2„gftcanths
, Treatment Systent Design fiat
m Name of receiving stream(s) (Pror,r'de a real) showing the exact, locatkart ril``each, rapat,a`Wl, inclrrriin
latitude and longitude):
Little Sugar Creek N 35 12 40.12 W 80 50 M9
10. please list all additives to the treatment system, Including chemicals is or nutrients that have
the potential to be discharged.
Nolte
12. AdditionalInformation
11 applicants (ar�c.lrtelr'r,,c ,c.rt�.aa�ca��j
« A USGIS topographical hicatl rnartr (or (acalay of the relevant portion) which shimrs all outfG: 11:s
sarS:mittry of the nios . recent a nae yticatl r,a,,sultt; (offluenf data, if z asi<.tla.le) containing the
srraa irrttrrrr values for each cheinical detected
NEW Applicants onlya
sa Kngincering Alternative Anaaly,>is
Description of rtt.rnc diaf.ieaaa tre t.zaaent sys' torn crarrrponen't s, m l� acities' and. reirlovaal efficiency
for derte.a..te d a onip Minds, �
> If the treatuient system will Cltx'charge to e§ storm sewer, written tag:."; !'ov al from the
rrtatra.ic ip ality responsible for the st- er ,
A list of any cernic als fecund in detectable arnounts at the, site, with the rrr€tsairaattrn observed
co cehr tza-tticar reyporte d f€ar. each cheta -dead (the taost recent a;ez�r�atrle must be collected Iess
than one year trios to that data of this a pplic.att on)
For lae.ltrolerta n ctrntarninarted sites ... Analyses for Volt.itile Organic Compounds VO C) slrear.rld
Are perfortned. Anal sets for any fated additives likely to tyc; present at the site, a`tnd for phenot
and lead should also be rferrrrted.
For, sites contaatoi anted with scalverit.s or other containinaants E11A Method 624 /6,2
analysis should beperformed,
NA 1 43

NPDES PERMIT APPLICATION - SHORT FORM C - GW
For discharges associated with gran aitdwater treatrneint fa,,.ilities.
13. Applicant Certification
I certify that I am familiar with the information eontained lit the application and that to the
best of my knowledge and belief auch Information Is true, complete, and accurate.
William Deal
a-,xaw, of Person Signing Tide
Signature of Applicarit I V'
Narth Carolina Gienerixl 'Statutc 143-215k (b)(2) pry. vide-s tht'it: Any person who knowingly niakeo ;any fialne
slaternent repres(mtation, or certification in, any application, record, report, plati, or other docurnentfilesor
requtrc,d to bvt nviintained under Article 21 or reg,,ilatic3ns of the tnvironmentrd Man at ement Cominiosion
intp1t,incriting ttvt Artic1c,, or who falwiles, tarrijxrs with, or knowingly renders inaecuxate any rtwordingor
rnofflioring (1twice or mithod required tr) be operated or maintained rtncler Article.. 21 or regulations of the
Conimit000n impit-menting that Article, qhall lie guiflt,,y tit' a rnitidvmearior punishable
t�y a fine not to mxcced $25,000, or by not to exceed six tuonth%, or by borhl (18 USA', Sectiom
001 provides ti punishment Ity a fine, of not inore than $2—S,000 or imprisonment not rnore than 5 years, or both,
for a MTnilar offenw..)
llagc 3 of 3 GGW OVO

..,. ... .._ ., �.. Civil & SnvironmentalConsukants.1m,
i
March 9. 2021 }
NCOE"Q Division of Water Resources
N-PD1,"S Complex Permitting, Unit
Raleigh, NNorth Carolina 27699
€.rIJect: Fngineering Alternatives Analysis (}aAA)
CBD to I -SC Scvvcr Construction
Charlotte, North Carolina
C l C Pro c<t l ci -61
On g alf ot` `1-rrrdoitv Water, Civil &� F.rivironmental ('701 SUltants. Inc, (C"F,"O is;mlUes-ling the
issuance of a MIDES permit fikir the discharge of treated groundwater generated from dew attiring
activities during the Baxter Street srartitar sewer lime construction.
s —HOO lrtttmltafatic ra
Charlotte Water
5 100 Brookshire Blvd.
Charlotte,, arlotte, North Carolina 28216
Attention: Bill feral
Phcmc 704- 57-134
1-I'mail wdeal ir'>ci.cha trlc�tte,nc.ca
lrc>`cctitr€
Baxter Street and McDowell `street
Charlotte, North Carolina
Civil & € nvir ttmental ('onsultants, Inc. (C-°IIC;)
5701 Arco Corporate to Drive Suite 400
Charlotte, North Carolina 2827:I
Phone: [phone]tl
Attention: Bruce I e illy, Senior 'inject Manager
Email: breillv(c cec:inc.cor j

Page
�v
IMar°ch 9, 202
1.0 BBC KC.AROUNI
The cahlecct Property consists of roads and associated right-of-ways along Portions of Baxter
Street, South McDowell Street, Morehead Street., Oriole Street. and l,e inoon Avenue. The
adjoining properties appearri to have. existed as an urban area,;generally developed with as mix of`
commercial, residential and undeveloped parcels since at 1929. Previous assessments indicate that
tvvt? contaminant plumes have impacted sails and groundwater beneath Baxter Street related to
historic dry cleaning operations (chlorinated solvents) and underground storage tank release.
Investigations as early as 1997 have consistently detected several constituents above the 15
NCAC.` 021_C 2012 groundwater standards: carbon tetrachloride (CT), t tr°<achloroethr» ne (PC ), an
trichloroe;thene 0"U"). CYYt, pert'im acd groundwater sampling in March 2019 and found the 1 A
NCAC 021..0202 groundwater and the 1 A NCAC 02B surface water standard excee laa ces for
VCE in wells W-3s, iv W-6. and MW- s and toluene: in well N4b-5s (analytical lab results are
attached). The attached site:.. Matta indicates the location of the monitoring wells in relation to the
project location.
The project will consist ofthe construction an of a new sanitary sever line along portions crl" llaxter
Street and McDowell Street by tru ro-tunneling. Groundwater from access pits and borcholes will
be pumped out and treated before discharging directly into Little; Sugar Creek, Fart of the Saa<«,>arr
Creek Watershed. Devvaterainla and treatment activities are estimated to last approximately twelve
(121) months. The collection, treatment, and discharge of treated agmnind aater will he terminated
once construction activities performed below the groundwater table are completed
3.0 ENGINEERING ALTERNATIVES ANALYSIS
3.1 EVALUATION OF WASTEWATER DISC"ARGETO StIR "AWATERS
C..f'C:` reviewed l..mNv —Ftow Characteristics of St€•e<anas„ published by the t SGS in 1993, to, obtain
the following stream flcrry data for Little Sugaar Creek. -
Drainage Area.- Alt .80 square miles
t rumen/Whiter QIO-. 134 cubic: feet per second (c#s)
0Q2 Flow: 87 cf a
W7Q 10 Low 11ow: 55 c°f
Average annual unit rcrnof'f' 1-2 et'sascl. mi

NCDH) - DWR
CEC project 190-615
Page 3
March 9. 2020
Little Sugar C reek is classified as as Class C dishable./,swimmable) ,satcr located within the
Catawba River Basin aral Is listed as all impaired �vatervvaN, on the North C'arolma 303(d) List. The
total rnaximuryi daily limits (TNIDI.$) include as fecal coliform litnit ot'less than 9.4x 1 W2 cfu/ 100
int, and as turbidity limit of less than cat' 50 NIU, There is also ail ill for dissolved oxygen of no
less than as dail� average oJ'5 mg/l, and instantaneous value t4,4 during 7QW Strearn
conditions.
The prclposed groundvsater treatment system consists of 1.100 gallon surge tank, two parallel
particle fifters, two 1.000 pound carbon vessels connected in series. and ancillary piping.
instrumentation, and wily ing,'The system has as flow capacity of 50 gpin and it: ill havean operating
t1oNv rate of-25 gpni. Groundwater generated by deNateririg activities mill he pumped tt') the SUrge
tanto equalize flo-vk and settle larg, r SLIspended solids. Pumps I and 2 will transfer the supernau-Itu
through the particle fifters to the carbon vessels that contain virgin coconut carbon, CE(
anticipatesthat the treatment system will sufficientb, rcrnove organics and turtlidity to levels below
detection, Iht. process flow diagram is included as an anachment, The proposed location of the
treatment system and outfall is shov\n on the attached site plan.
3.2 NON-MUNKAPAL FLONN' 11ROJECTION
from the treatment systern will be.25 gzallons per ininute (36,00) gpd)
3.3 FEASIBILIT Y EVAUTATION OF ALTERNNTIVES
In accordance �knh 15A NCAC 211,010i(c)(2). CEC evaluated the technical and economic
feasibility of\vastewater disposal alternati,es reflerenced in the Analysis
(,FAA) Ciuktance docurticia.
3 -3, 1, Connection to Ixisting Waste\,\,arer 1'reattTlent Svstenl
BaSCd On as reViCW OftlIC CitV cat Charlotte Sewer tJ'se Ordinance, the municipal treatment plants
owned and operated by the (.Ity do not accept ground%valer discharges per Section '43-79 (b)( 14),
Additionally. (TV approached DART, as Charlotte -based company specialized in vvaste disposal,
and they stated that disposal and treatment of),,roundwater would cost $0,40 per gallon. Based on
the pr( e(ud flov rate and anticipated duration ot'devvateringy activities, the disposal cost xvould
be approxirnateK '56.5 million dcerning this altcruati�e cost prohibitiae,

N('DI,'Q - DWR
TV ProJect 190-615
Page 4
s1arch 9, 2020
and Application and Infiltration (Jallerics
Due the Hinited land available adjacent to the pru, cct site and setback requirements, land
Halt p] ic ation and infiltration galleries are technically itif'casible as wastewater disposal methods.
Nearby properties are currently valued as $4 -10 million per acre, making these options cost
prohibitive (supporting documentation attached), A table detailing the capital and operating costs
for these options is included as an attachment,
3 J 3 ln-Situ Remediation \V'clls
Due the limited land availa[fle adjacent to the pr(ject site, the installation (,'Woll-site inJ ection wells
technically infeasible as wastmater disposal method. Nearby properties arc currently valued a
s
$4 -10 miltion per acre making this option cost. prohibitive (supporting documentatk-in attached).
A table detailing the capital and operating costs for these options is included as an attachment,
4.0 CLOSING
If you have any questions or conintents please contact Bruce% Reill,, by phone at 980-260-21 30 or i�mafl at breillv,'icccincxom.
,oit IJU tj$q1to,
CAI P,
SincerelN,,
ell
('1VIL & E' NVI RONMEN"I'Af, C'ONSULA"ANTS, INCt
o' x
V
0inton Ingmai, P.E, Bruce 1), Reilly.
ProJect Consultam, Senior Proliect Mana.,ger
('AI1LX and 16r EVALhaed Alternaatives
Proposed Site Plan
Proposed GW Treatment System Process Flow, Diagram
tMarch 2019 Analytical Data
Properq Valuation Documentation
larch 2019 GroundwaterMonitoring Resmits
('ertified Mail Receipts
Deliverx. Tracking Information
cc: Mr, Freddie Young. Sanders Ultility
Mr, William Deat, Charlotte Water