DEQ-CFW_00022339

From: Moore, Zack [/D=EXCHANGELAB5/OU=EXCHANGEADMINISTRATIVE GROUP
(FYD|BOHF2]SPDLT)/CN=REOP|ENTS/CN=D9C3D01D1FC447OG8B39G3DZ3O5AAC7E-ZSK8OORE]
Sent: 7/1I/I0I78:38:46PW1
To: Cris Harrelson <cris.hane|son@brunmickoountyncgov^(cris.hame|[e-mail])
[cris.harre|[e-mail]]
CC: Culpepper, Linda [/o=ExchanXeLabs/ou=[xchangeAdministrative Group
(FYD|8OHFZ33PDO)/cn=Redpient$cn=73d475cbae3Z4aI9687e171Idc9a79c5'|mcu|pepper];3hehee`Mina
[/o=ExchangeLabs/ou=ExchangeAdministrative Group
(FYD|8OHFZ33PDO)/cn=Redpient$cn=e7Zb9b373955417O9fZa93d971ca3]91'mwshehee]
Subject: FVV:Draft language (private}
Attachments: Fina|282218_manua|_l1-JUL174df;Fina|_tmp|t_537PPTGENx_manua|_11-JUL-17.pdt8CPUDCOC.PDF;
COC_OA_282218.pdf
Hi Cris,
I am copying Linda Culpepper with DEQ, since I have no context for reviewing the attached results and I'm not sure what
type of QA/QC was done. Also copying Mina. Thanks.
Zack Moore, MD, MPH
State Epidemiologist and Epidemiology Section Chief
Division ofPublic Health
North Carolina Department ofHealth and Human Services
819546-1725 office
8197330490 fax (secure)
zockmooro&dhhs.nc.00v
2250. McDowell St.
Raleigh, NC27S03
1902Muil Service Center
Raleigh, NC27S0Q-10Q2
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Unauthorized disclosure of juvenile, heath, legally privileged, or otherwise confidential inforrnation, including confidential Information relating to an ongoing State
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From: Cris Harrelson [naiKDIhS.harnelSOn@brungwi[kc0untyn[.gov]
Sent: Tuesday, July 11,2O174:35PM
To: Moore, Zack
Subject: FW: Draft language �privatej
Dr. Moore,
Do you have time to look this one over? This will be released by our Utilities Department.
Cris

From: Ann Hardy
Sent: Tuesday, July 11,2Ul74:2SPM
To: Cris Harrelson ;Amanda Hutcheson
Cc:
Subject: FVV:Draft language {private)
Sent: Tuesday, July 11,ZU174:1OPM
To: Ann Hardy
Cc: Glenn Walker
Subject: Draft language 1privatel
I made some tweaks, but here is the notice. Let me know your thoughts.
Thanks,
Jobo
Based on samples taken by Dr. Detlef Knappe and others in August 2014, but not published until November 2016, levels
of PerUuoroa|ky| Ether Carboxylic Acid (PFECA) known as GENX and similar PFECAswere found in the Cape Fear River
and indrinking water produced bythe Cape Fear Public Utility Authority. Average levels ofGENXfound in the Cape Fear
River onAugust 14,Z014were 631nanogramsper Liter (6]1parts per tri||ion). The median value was ]O4nano8rams
per Liter. Additional testing of Cape Fear Public Utilities water within the treatment process indicated that there was
not significant removal ofGENX during the treatment process. Dr. Knappe'steam did not test the Brunswick County
treated water supply atthat time sothere was no confirmation ofGENXwithin Brunsxvick[ount/s treated
water. Although the treatment process at Brunswick County's Northwest Water Treatment Plant varies significantly
from Cape Fear Public Utilities Sweeney Water Treatment Plant, it is generally thought that traditional water treatment
methods will have only limited success inremoving GENX.
The Division ofEnvironmental Quality, incooperation with various regional utilities, began testing raw water and
finished water at multiple locations beginning the week of June 19, 2017 to determine the levels of GENX and other
similar Perfluoroalkyl Ether Carboxylic Acids (PFECAs) and Perfluoroalkyl substances (PFAs). Additional information un
this testing can be found at Samples were
taken at Brunswick County's Northwest Water Treatment Plant of both the raw water and the finished water on June 22,
June 29th,and July 6mbyDE{lstaff. Additionally, in order to serve as additional sampling validation, Brunswick County
staff took separate samples onJune J9mand July 6thalong with DE[\staff. The samples taken byBrunswick County staff
were sent toadifferent laboratory than that used byDE{Istaff.
Brunswick County has received the laboratory sample results from samples taken on June 29th The levels ofGENX
found in the raw water were 36.8 Parts Per Trillion. The levels found in the finished water were 32.8 Parts Per Trillion. It
is normal to see some variation in samples since they are two different volumes of water and due to the extreme level of
analysis performed (parts per tri||ion). Toprovide asense ofhow much ananogramper Liter (Part Per Trillion)
represents, some references indicate that a part per trillion is equivalent to one drop of water (0.05 ml-) diluted into
20 olympic sized swimming pools (2500 M), or about three seconds out of every one hundred thousand years.
According to a release by the NC Department of Health and Human Services, "There are no U.S. regulatory guideline
levels for GENX. However, as part of the European chemical registration, a 2-year chronic toxicity and cancer study with
rats was performed. They reported a Derived No Effect Level (DNEL) of 0.01 mg/kg bw/day. Based on U.S. risk

assessment calculations, this corresponds to a concentration in drinking water of 70,909 ng/L of GENX — more than 100
times greater than the mean value of 631 ng/L detected in the Cape Fear River. Based upon these data, the GENX levels
detectedin2O13'2Ol4w/ou|dbeexpectedtoposea|ovvrisktuhumanhea|th." The average level of3ZO Parts Per
Trillion from Brunswick County's June 29, 2017 samples are 19 times lower than the August 2014 samples.
Officials from NC DHHS and the Department of Environmental Quality (DEQ) are working with the EPA to learn more,
and it is expected that later this week or early next week the samples from DEQ will be available along with additional
information on Health Risk Levels from the North Carolina Division of Health and Human Services.
The full listing ofJune 29,2U17sampling results are included below. Sampling was performed inaccordance with EPA
K4ethodS7l.
Raw Water
Finished Water
Percent
Constituent
Sample
Sample
Reduction
perf|uorobutanesu|fonioacid (PFBS)
ND
ND
perf|uorohexanoioacid (PFHxA)
11.6
8.91
23%
perf|uoro-J-propoxypropanoicacid (GenX)
36.8
32.8
11%
perf|uoroheptanoicacid (PFHpA)
107
574
4696
perf|uorohexanesu|fonicacid (PFHx5)
4.68*
ND
10096
perf|uorouctanoicadd (PFOA)
9.99
4.88
51%
perf|uorononanoicacid (PFNA)
*
ND
100Y6
perf|uorooc1anesu|fonicacid (PFOS)
14.3
5.22*
63%
perf|uorodecanoicacid (PFDA)
ND
100Y6
perf|uoroundecanoicacid (PFUnA)
ND
ND
perf|uorododecanoicacid (PFDoA)
ND
ND
perf|uorotridecanoicacid (PFTrDA)
ND
ND
perf|uorotetradecanoicadd (PFTA)
ND
ND
known standard does not read this low but the result is above the minimum detection limit of the equipment
ND Non Detectable
The combined Health Risk Advisory level for PFOS and PFOA is 70 Parts Per Trillion. The combined amount found inthe
finished water sample was 1O.lParts Per Trillion. Brunswick County will provide additional information asitbecomes
Director
Brunswick County Public Utilities
POBox 249
Bolivia, NC 28422
Utility Operations Center
250 Grey Water Road NE
Supply, NC 28462
OEQ-CFVV_00022341

910-253-5776 fax
Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties by an authorized State
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DEQ-CFW-00022342