DEQ-CFW_00022635

From: Johnson, Chris [/O=EXCHANGELABS/OU=[XCHANGEADMINISTRATIVE GROUP
(FYD|BOHF2]SPDLT)/CN=REOP|ENTS/CN=147G89]FAF]749D2BA3E82OE14EDCEE2'OOHNSON10]
Sent: 7/13/I0I79:II:23PW1
To: Lucas, Jill K8[/h=[xchangeLabs/ou=ExchangeAdministrative Group
(FYD|8OHFZ33PDO)/cn=Redpient$cn=7187fc41O6394e6Oa5e554ccZ79c0d7Z-jm|ucas];Kritzer,]amie
[/o=ExchangeLabs/ou=ExchangeAdministrative Group
(FYD|8OHFZ33PDO)/cn=Redpient$cn=cee93c49d01445a3b54Ibb3Z7dcdc84O-jbkritzer];3attemvhite,Dana
[/o=ExchangeLabs/ou=ExchangeAdministrative Group
(FYD|8OHFZ33PDO)/cn=Redpient$cn=b5cf94a2dac14Z2ObIb5a7OO5IQ745cO-dsattemvhit]; Culpepper, Linda
[/o=ExchangeLabs/ou=ExchangpAdministrative Group
(FYD|BOHF2]SPDQ]/cn=Redpient$cn=7]d475cbae324a29687el7l1dc9a79c5-|mcu|pppper];Holman, Sheila
[/o=ExchangeLabs/ou=ExchangpAdministrative Group
(FYD|BOHF2]SPDQ]/cn=Redpient$cn=94a3fG9G74d34b769b3bd8]4a97lO5c5-schu|man]
CC: Karo|KCyndi[/n=[xchanDeLabs/nu=ExchangeAdministrative Group
(FYD|BOHF2]SPDQ]/cn=Redpient$cn=57d607f90af4584aefpdb666c924ebf-cbkann|y]
Subject: RE: Question ontreated v. untreated water samples in Cape Fear
The intake for CFPUA's Sweeney Water Plant is about 26 miles upriver from the plant itself (L[PWSA.)Best estimate is
that, for average treatment volumes, it takes approximately two days for water entering the pumping station at Lock&
Dam #1toreach the plant. Then, there isanother period oftime related tuthe treatment process. |nthe past, the
residence time through the plant was about Ohours.
If these values are still fairly accurate, the water being sent out of the Sweeney plant was drawn into the pumping
station about J8daysearlier. I don't know if I would consider this a "quotable" estimate, but will give you a rough idea.
Chris Johnson
WCDEQ--DVVR
Water Sciences Section
CorresPondence with this erna.i! address is suNect to the Nor0i Caro�ina Pubk Records Law and may be disdosed to third parties.
From: Lucas, Jill K4
Sent: Thursday, July l3 20171I:56PK8
To: Johnson, Chris <[e-mail]>; Kritzer, Jamie <jam ie.kritzer@ ncdenr.gov>; Satterwhite, Dana
<dana.sattenwhite0Dncdenr.8ov>;Culpepper, Linda <|indazu|pepper@ncdenr.8ov>;Holman, Sheila
^ahei|a.ho|man0Dncdenr.8ov^
Subject: RE: Question ontreated v. untreated water samples in Cape Fear
Does this mean that the finished sample value is for "older" w/ater— in that in was drawn into the process earlier and
potentially reflects a different exposure?
Jill
Sent: Thursday, July 1] 201712:00PM
To: Kritzer, Jamie Satterwhite, Dana Culpepper, Linda
'
'Hu|man' Sheila
Cc: Lucas, Jill K4
Subject: RE: Question ontreated v. untreated water samples in [ape Fear
Areview ofthe field sheets would suggest that the samples were not collected in a way that would take water residence
time through the Sweeney Plant into account. These samples should just beconsidered snapshots ofthe water
conditions atthe time collected.

I spoke with Mark Strynar from EPA this morning and he stated that chlorine should have no impact on the results. They
did a test using tap water to help confirm this.
Chris Johnson
WCDE[.-DWR
Water Sciences Section
Corresoondpncp with this emai! addess is subject to the North C.aroiina Public Records Law and rnay be disciosed to third Part�es.
From: Kritzer, Jamie
Sent: Thursday, July 13 201711:14AM
To: Satterwhite, Dana ; Johnson, Chris Culpepper, Linda
'
�Ho|man' Sheila
Cc: Kritzer, Jamie Lucas, Jill M
Subject: Question on treated v. untreated water samples in Cape Fear
Below is language we received from CFPUA on Tuesday that raises a question regarding the chlorine and treated versus
untreated water?
[FPUA: "We should be careful not to compare raw and finished water levels since the samples were not an attempt to
coordinate the timing of flow through the plant. Simply put, we didn't try to sample the same water slug going into the
p|antandcomin0outofthep|ant--theravvandhnishedsamp|esw/enejusttakenunthesameday."
8ocould DEQsay the same thing? |nother words, were the finished and raw samples timed sothat wewould belooking
at the same water parcels or no?
Jamie Kritzer
Communications Director
N.C. Department of Environmental Quality
419-707-8602
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