DEQ-CFW_00023715

S1.313JECT-
FROW
THRU-
TQ
Per yo
�Csultsfilr tile
for the tour h
and 2!" for ez�
receiving and
daily samples
reported se. -rim
concensw0r;
WN'770 !-37ATFS ENVMR':0,,-iN!EN7AL RR.'i-07EC 7 .1, 0 N, A G E ,.0 Y
%
Jul�26. 2017
Rcsults lir (RmA Osk:�eks 4 & 5) NC W."Q Cap Nw F'Car Walens"d
a m: p n ga 0
Unnothy J. F ucklev.
F' us Division Aposwe Nleffiod, a", e-S"o,
Jennitler Orm,�--/ava !eta.
Linda Culpen-per, [Nrw; lair cm'k-'111
Division of 'Watcr P'-'sr�Uvcc
North Carolina Depamment ol'F'nviroarnemal Quafiiy
ir reques! of June 9. 2017, 1 as Pjead toy rovide you with the laboratory analysis
�,onc�ntration oi'(l ii,X in crate sam.ples, collected b� NC DEQ� Fhz,,�,c results is
md fifth wceks k�-'-rc receivoki h� cn.u- latxvatnr'.,on Jul� 14""
:h ofthese two nha3nd:�" of mvekl� szmplingIt is our understanding that we %%ill he
malyAng swni-Ass trom one more week ol':mmnpling as well as,,.A')mc additional
�'Tom be Clemours OutRall, Rcmults frmn thesc additional sampling rounds will be
itel) as thcyl cones available. k%"e vvill also Tepon Scmi-quaraiwive
()faddifior,,l PFS analytes in a later repon.
Each round of samplQ,,� cmmisted ol'a number ofsitcs selected Iq NC DF( Q that included
as Way of "aterlypen cflllwnz, drinking, and w5l, umwN- Saftnpllme rounds 4 and 5
also included iid Hanks and pikes Wt were p0ded by our lal. 4mwry fi r quality o,-m;' ; l
(QCj purposes, It is ou, understanding that duplicate sarnpics wre collmlA at evch site. One of
Me duplicates was providod to our laboratory wilh the gecand sample being providcd, to 11
comract labmaory.Tem Amrica ,Denver. ColoradoL kv WX analyX In nnmds 4 and 5.
Test Armerica £e:as a,,4prmidcd m,-ith field blanks and sj-.ikxs that %%en-pl-repanod by
laboratory. Asults from thes,.: QC' sar"uples -'Ol paw,:ide the has,,> i'm t3mrpa�ing our wAls,%ilh
lem America, Our laboratory to for this analysis are d scribcd in Sun of aT, 2016" an'd
Sirytar etat. 20 1 V Fleemme (A'an flaflUre ofoUr - -ure Liquid
, 'k U"ftra I In. h Press
: sun'O' €- 1. M, B, Px�kcu.V Sonth C' Kn='1% OR€ mx-"-�n� xu' � g
Wmawky skww="V4� nm %AV Ammmmy 5 WAK ka R=3 <4 Cxolma Fm uonsrmsm�
N. Me,1&wn 4 LWY 4 1 W&MMI A. Awk";n F'M;�'kN€x1, ima 4 so 0 WWWWWA Qws!�
F$ H", %4i P and SWUmAnd; WFESAM to Nownd " am 401 AnoM kho I MvM hdU TW*
DEQ-CFW_00023715

j a 1:': 26 , "! 0 17
Chr'gym ato rarphy Mass. sp metry AM- 's sp'�Ctrormctr% (L'PLC-%4SA4S�_%%-c.ek 5:�mn-q)lcs
21 R
run on a I I igh, Resolution Mass Srwctn,.�nkncler, 71'he change in instru,.rn rl*E hatc! no impact pact on our
ability to qua .Atli (...w:n.X iinthe mmnles analzed.
71-be provides a brict'suminary ofresuhs,
rie.L �.DW R tO I -Chemours Out.fid 1002
* T h �, c number 1he li:anutati i ed f mn, I to 5;
ni! ofqt on increas
* 11cak conccntr':-I ions ohseTv d, at the( I hemours ouda I I dccrse d nk,Irly ] 0-fold
from 21,760 to 2.430 ng?'L (and by week 5a 304old decrease to 77 13 11g:1j,
* 'I'he mcdfian -value decr-ased more than tvw-fold from 1 '6 to 04A no L,
ni-
""Ic, excec&d our cali�ra6o� curve (n -9,�ese samples 'were diltacd and the
di I w amil auncertainty in
anal%,,,.�'s %kas; r reatcd� I -h -,v4m jwoccdure imm hices �ondditi
our quanfificaiion, We have lIagg:cd,,vsfflts I sainp ,�� Ics that raquired dilution
* Qualitycon Lrol State ples indicated mv�surcm. is rvere %�.;Ihiri our quality control
"-pecifications %kith one exceplionnoted Wo%k.
c OerA was not c1ciected in cithe ofthe twos rwid h1anks-
o Spiked fieldslari,ples, (n­-3) in-casiuedwillijin 13 V, Tcent of'thc cx'p-ecled
,,alue. One low-level spike sample 00 rigIL) was rneam.ircd at 219,10 ng/L �,vhich
k%as outside of'our:i 20 percent rang c,
0 Dupfiic��'w 1.�; cision onone s.,."'nple (Chernom mal'all 5x dilution) was _5.41.�,
c Standard de% ialiom
FX, -level a �h conf oil ent at ( 11 . spiketheonclow spike devkllion. vvc have hig idence in the c c r i)
resulls Terxirwd here.
Thank. vou for inviting us to hca Part of this 0yon a very important pttNic
health concern in North Camlina. Thcs,., results represent of mul..'�y within our lab but I
would especial1% like toacknowledge Drs. Mark Strynar. Andy James McCord and
Seth Ne"lon in conductirg the hvhoratory amd-yses. Dr% M�,riair Nledima-N.'era v4ho ni"Ovidcd
invaluable sul.Vorz and cosmdinatian_ and N,4s. Sania'l ong Argao who supprwd �M,,d o%vrF,,M
qwOity assurwwc,
[I'Vou have errey que-, 6ons,'.S'�'concertl ,. do.not hesitate to contact ine at 019") 541-2454 o:
crnaii 1 look fi.mvand to our continued work mgtlthcr,
Attach.mc,nt
CC: Ickv B, Afl,,nba h. ActuU-, Det UIN Direclor
Water Pla'otcctiorl Di- vision' il
Region 4 - Atlanta
DEQ-CFW-00023716

Concentration of GenX Measured in Cape Fear Watershed Samples.
Corn-C. Flag
Week
Location I Sample identifier'
4
DW : r Chemo rs Outfall 002
2,43 ':
1
4
DWR 92 - 8faden Bluffs Raw dater intake
6,
4
DWR #3pO Hofferf{q�$$$$���'T P Raw Water
<LOQ
qy $$':
4
D.2 Swefmy Finished
80,5
4
rD Q3 ASR WO
3:7
4
NCDEQ 4 Wrightsville Beach Well #11
<LOQ
2
4
NCDFQ 5 international Paper Raw
59,7
4
NCDEQ I LCFWSA DUPLICATE
88,5
4
NCDEQ 6 International Pa eg-.w nkhed
17,D
4
D[Q 7 NW run-,vick WTP Finished
5Q.7
4
CT Q 8 Pender CO421 WTP Finished
75;D
5
DWR R1 PO Hoffer Paw
<LOQ-
2
5
DWP #2 Chemours Ou f ll_ 02
713
1
5
DWR #3 Bladen Bluffs Raw water
54, t
5
DWR #4 Sladen Bluffs Finished Water
5&9
5
DgWj" , 5&.i..Smithfield Foods well field
<LOQ
2 .
5
g
CDEQI . v"WA rz3
57.7
5
NCDEQ 2 Sweeney WTP finished
95.0
5
NCDEQ 3 AS R well
94,1
5
NCDEQ 4 W`8 Well #11
371
5
NCDQ 5 IP _ Raw
74.2
CD:E-Q6IPFinished
34,1
5
€ C"f°Q 7 NW Brunswick WTP - Finished
69.2
5
NCDEQ 8 Pen;der 421 %qTP - F€n€s§red,
99.
5
NCDEQ 9 WB Well
<LOQ
Flag
I Sw-nple diluted 2
2 Below limit of quanCtavod (L Q) of 10 rg L
*As provided by C Di`
DEQ-CFW 00023717