Brandon Kernen(603)271-0660 / Brandon.Kernen@des.nh.gov

Highly Fluorinated Compound Conference

June 14, 2017

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• UCMR3

• 18 systems - 80 samples

• 3 systems with detections

2013-2015

• Pease Tradeport Water System

• Haven Well - 2,500 ppt PFOSApril 2014

• SGPP facility – Merrimack

• Sink (public water source) – 30 ppt PFOAFebruary 2016

• Former TCI AmherstApril 2016

• Southern NH investigations and statewide assessment

April 2016 to present

AGQS - Ambient Groundwater Quality Standards

(Env-Or 600)◦ PFOA, total of all isomers – 70 ng/L or ppt

◦ PFOS, total of all isomers – 70 ng/L or ppt

◦ Combined total PFOA + PFOS – 70 ng/L or ppt

Soil guidance - direct contact◦ PFOA – 0.5 mg/kg (500 ppb)

◦ PFOS – 0.5 mg/kg (500 ppb)

◦ No leaching based standard

No surface water standard

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****NH is integrating the PFOA+PFOS sampling into all of

applicable regulatory programs****

Identify Potential Sources

+Targeted Well

Sampling

Waste Sites Sampling

700+ sites

Class B Foam

Outreach –Letters &

online forms

New Community Well Siting

Groundwater Discharge

Permits

100+ sites

Public Water Supply

Sampling –Voluntary

400+ sources

Wastewater/ Biosolids

Assessment

Assessment of PFAS

OccurrenceIn NH

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6

869

553

119244

0

100

200

300

400

500

600

700

800

900

1000

<10 10 - <45 45 - <70 ≥70

Nu

mb

er

of

Dete

cti

ons

parts per trillion (ppt)

NHDES Sampling

Results

PFOA + PFOS

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0

50

100

150

200

250

300

350

400

450

FabricCoating (2)

OtherPotentialIndustrial

PFAS Users(7)

Landfills (5) FireDepartments

/ FireTraining (6)

Other UnknownSources

# o

f D

ete

cti

on

s

<10

10 - <45

45 - <70

≥70

(6)

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PFOA +

PFOS

(ppt)

(3)

0

100

200

300

400

500

600# o

f D

ete

cti

on

s

>10 <70 ppt

>70 ppt

PFAS Occurrence

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Analytical

Requirements

• Extended list (9-

23 analytes)

• Low reporting

limits (<5 ppt)

Analytical Issues

• PFOA (linear &

branched)

• Labs reporting

different forms of

same compounds

• Standards from

different vendors are

off by 20%

• PE/PT Testing

Enhanced

Assessment

• Other PFAS

compounds not

typically tested

• Forensic/finger-

printing sources

• Holistic

analytical

approaches

Laboratory Considerations and Challenges

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