DEQ-CFW_00021470

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Subject: RE: Wilmington GenXSampling/Analysis
Also, in attendance for NC DEQ was Morelia King, Nick Jones, and that Mark ? is Mark Brantley.
Quality Assurance Officer
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<Strynar.Mark@epa.8ov>; Medina4/era, Myriam <Medina-Vera.K8yriam@epa.8ov>; Kano|y, [yndi
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Satterwhite, Dana <dana.sattenwhite@ncdenr.8uv>
Subject: Wilmington GenX Sampling/Analysis
OEQ-CFVV_00021470

Thank you all for participating in Tuesday's call intended to coordinate efforts and facilitate communication with respect
towater sampling/analysis inWilmington. My notes from the meeting are below. |fcorrection orclarification iu
needed, please "respond aU"
Attendees
Region4: Scott Sivertsen
EPA/ORD/NERL: Tim Buckley; Mark Strynar; Myriarn Medina -Vera; Andy Lindstrom
The agenda for discussion included the following:
l. What question are we attempting to address with this sampling effort?
J. What isthe sampling design?
3. What isthe status and timeline ofthe Cy\PP?
4. Given split sample analysis (contract lab and NERL lab), how will differences in reported concentrations be
managed?
5. What is the plan for communicating results and who has the lead?
G. What isthe project timeline?
7. Dovveneed on -going coordination meetings?
Action items / notes include:
* Chris Johnson was identified asthe PO[for NCDECL
w The primary question to be addressed by the sampling is whether GenX concentrations have decreased since
concentrations reported inSun etal. 2U16paper from samples taken in2O13.
w Some aspects ofthe sampling design were described: sampling will beconducted ofsource and finished
drinking water aswell assource effluent. Linda Culpepper was identified asthe person responsible for the
sampling plan who can provide additional detail
* Sampling began Monday 19 June and is planned to continue for three more weeks. Approximately 5Dsamples
are expected to be collected. Split samples will be sent to RTP and contract lab Test America in Colorado
w Mark Strynarindicated that he canturn'around samples in 1-2 weeks.
* The QAPP is being developed by Linda Culpepper of NC DEQ but she was not on the call to describe status.
w The list of target analytes has yet to be determined. There is interest in chemicals related to GenX
production. It was suggested that the analyte list be determined by consensus among NC DEQ, R4, and EPA-
RTP.
* The need for blanks and spike samples were discussed. |twas suggested that spike samples beinthe
concentration range uf7Un8/L.
* The contract laboratory conducin8analysis isTest America inColorado. Mark Strynarisgoing tocontact the lab
to obtain analysis method.
Communications plan has not been developed; NC DEQ has the lead
* Samples will bedelivered inbatches. N[DBQwill deliver samples toRTP.
* Tim Buckley agreed to set upweekly meetings for planning and coordination
* Mark Strynar and Tim Buckley will be visiting R4 Athens lab 6/I6 & 27 to provide tech transfer on GenX analysis
Timothy lBuckley, PhD
Director of the Exposure Methods & Measurements Division
OEQ-CFVV_00021471

National Exposure Research Laboratory
lU9TVVAlexander Drive
Research Triangle Park, N[ 27711
Email:
URL
Phone: (9l9)541'2454(0);FAX: -0239
OEQ-CFVV_00021472