DEQ-CFW_00003161

Grzyb, Julie
From: Grzyb, Julie
Sent: Friday, June 16, 2017 5:00 PM
To: Culpepper, Linda
Subject: perfluoroalkyl ether carboxylic acids to test for
Attachments: PFECAs slides.pptx
Linda,
The two perfluoroalkyl ether carboxylic acids we are interested in having the lab test for are PFMOAA and PF02HxA.
The MS/MS transition range for PFMOAA is 180.0 —►85.0
And the MS/MS transition range for PF02HxA is 245.1—► 85.0
Mark should know that for any samples that biological growth could occur (i.e. instream) Detlef recommends adding some nitric acid as described below:
Methods used for sample collection are outlined in the NERL/HEASD SOP No. EMAB-113-0 entitled "Sample Collection Protocol for PFCs in Surface and Well
Water (4). The specific sampling method was dependent on the source of water being sampled; however, the basic process involved rinsing the collection bottle
with three volumes of water followed by filling on the fourth iteration and adding 5 mL of 35% nitric acid as a preservation agent. Duplicate samples were
collected at a rate of 10%. Samples were labeled with unique codes as well as the appropriate information providing time, date, location and water source type.
Samples were maintained at ambient temperature after collection. All samples were shipped on February 20, 2009 to the RTP PFC laboratory for analysis, with
chain of custody (CoC) forms recording collection, shipment, and receipt (Appendix 1).
Connie and I talked about this afterwards, we may want to hold off analyzing samples for these ethers and learn what we can about them first. We know they
are there and perhaps Chemours and EPA can tell us everything they know about them first so we can find out if they will be eliminated when the wastestreams
from the vinyl ethers is treated with RO and if they pose any health risks.
Julie
Julie A Grzyb
Supervisor
NPDES Complex Permitting
NC DEQ / Division of Water Resources / Water Quality Permitting
919 807 6390 office
DEQ-CFW 00003161

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iulie.grzyb(a).ncdenr.- ov
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DEQ-CFW 00003162