2016OISCPes-cideDri3Inves-ga-ons–StudyofaNew

SamplingDesign

AAPCOLabCommiFeeMee-ngMarch6-7,2017

2

Wind

TargetFieldSwab,Veg,Soil

Swab-1,Veg-1,Soil-1

Swab-4,Veg-4,Soil-4

Swab-3,Veg-3,Soil-3

Swab-2,Veg-2,Soil-2

ControlSamples?

Sampling

3

•  BoFleneck=vegeta-onsampleprep

•  Swabseasytoanalyze,muchshorterturnaround-methanveg

•  Doswabsamplesprovideallnecessaryinfofordri3cases?

•  Ifyes,swabswillbeanalyzedandvegretained

•  Ifno,analyzevegforaddi-onaldata

•  Ifswabsposi-ve,dowes-llneedtoanalyzeveg?

BackgroundandStudyObjec-ves

4

2016OISCDri3CaseInves-ga-onsSummary

TriclopyrThiencarbazone-methylTetraconazoleTebuconazoleSulfentrazoneSimazineSaflufenacilPyraclostrobinPropiconazoleParaquatMetolachlorMetsulfuron-methylGlyphosateGlufosinate

MetribuzinMetalaxylMetconazoleImidaclopridImazethapyrImazapyr2,4-DDicambaDimethenamidClethodimBifenthrinAzoxystrobinAtrazineAcetochlor

102casestotal

5

Dri3CaseSimazineSample # Sample Description Sample Matrix

Amount Found

Simazine

2016 51 0038 SWABTRIPBLANK Swab BDL

2016 51 0039 VEGETATIONSWABFROMTREE90FTFROMFIELD Swab 7.6 (ng/swab)

2016 51 0040 VEGETATIONFROMTREE90FTFROMFIELD Vegetation 51.9 (ppb)

2016 51 0041 VEGETATIONSWABFROMTREE60FTFROMFIELD Swab 541.4 (ng/swab)

2016 51 0042 VEGETATIONFROMTREE60FTFROMFIELD Vegetation 316.9 (ppb)

2016 51 0043 VEGETATIONSWABFROMPLANT50FTFROMFIELD Swab 33.0 (ng/swab)

2016 51 0044 VEGETATIONFROMPLANT50FTFROMFIELD Vegetation 173.4 (ppb)

2016 51 0045 VEGETATIONSWABFROMTREE30FTFROMFIELD Swab 474.6 (ng/swab)

2016 51 0046 VEGETATIONFROMTREE30FTFROMFIELD Vegetation 850.3 (ppb)

2016 51 0047 VEGETATIONSWABFROMTARGETFIELD30FTINSIDEFIELD

Swab 3322.6 (ng/swab)

2016 51 0048 VEGETATIONFROMTARGETFIELD30FTINSIDEFIELD Vegetation 27347.8 (ppb)

6

Simazineppborng/swab

7

Azoxystrobinppborng/swab

226yds

226yds

183yds

183yds142yds

142yds

125yds

125yds

03

03

1

10

100

1000

SW4 V4 SW3 V3 SW2 V2 SW1 V1 SW0 V0

8

Tebuconazoleppborng/swab

Target

1

10

100

1000

SWVeghive#5-6 Veghive#5-6 SWVeghive#1-4 Veghive#1-4 SW107yd Veg107yd SWmaple Vegmaple SW0 V0

Bush107yd

MapleBeeHives1-4

BeeHives5-6

9

2,4-Dppborng/swab

1413 1413 1083

1083

633

633

303

30303

1

10

100

1000

10000

SW1 V1 SW2 V2 SW3 V3 SW4 V4 SW0

10

Glufosinateppborng/swab

Maple

1

10

100

1000

10000

SW3 V3 SW2 V2 SW1 V1 SW0 V0

CherryBQL

SwabCherryBDL

SwabOrnamentalBDL

Orna-mentalBQL

MapleSwabBDL

11

1.  SwabPosi-ve,VegPosi-ve43%

2.  SwabNega-ve,VegPosi-ve26%

3.  SwabNega-ve,VegNega-ve30%

4.  SwabPosi-ve,VegNega-ve1%

2016OISCDri3CaseInves-ga-onsSummary

143%

226%

330%

41%

1 2 3 4

12

1. WatersolubleA.I.weathercondi-on?

2. Systemic?A.I.absorbed/uptakenbyplants

3. Timepastbetweenapplica-onandsampling?

4. Analy-calcapability,LODs

5. Other?

Q:Why?Swabnega-ve/Vegposi-ve