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Discussion Slides for Greater Yamhill
PSP
SAG Meeting
ODA HQ Office
January 16th 2020
Yamhill PSP Historyu Decision made in 2006 to initiate a PSP in the Yamhill
u WF Palmer Creek on DEQ “303(d)” list of impaired waters for chlorpyrifos based on USGS monitoring
u Watershed council and SWCD expressed strong interest
u Diverse agriculture and some small urban centers
u Monitoring began in 2007 throughout the sub-basin u As many as 8 locations monitored in early years
u Regular outreach and communications activitiesu OSU Integrated Plant Protection Center and Extension
workshops on IPM and pesticide risk reduction
u Watershed council membership meetings and WF Palmer events in Dayton
u Pesticide dealers/crop consulted and included in meetings
Yamhill PSP – Current Approach and Status
Currently there are two areas of focus within the Greater YamhillPesticide Stewardship Partnership
v Palmer Creek Sub-Watershedv Cozine Creek Sub-Watershed
The shift to these sub-watersheds began in to focus attention on smaller more intensively utilized areas which had demonstrated the greatest consistent impact from pesticides
A review of several years of historical data has indicated onlyminimal to no sustained reductions in pesticide concentrations in These sub-watersheds
Pesticide loading analysis has revealed additional data that mayhelp in further explaining why improvement has been lacking
34 pesticide ingredients or degradates detectedwith 9 exceeding a benchmark at least once
Yamhill PSP Monitoring Plans
u Beginning in 2020 monitoring will be scaled back by approximately 50% in the Yamhillu WF Palmer Creek:
u Webfoot Bridge (furthest downstream) = 1x per month
u SE Palmer Creek Rd and SE Lafayette Hwy = 3x in spring
u Cozine Creek:
u Middle Cozine = 1x per month
u Lower Cozine = 1x per month
u Steam discharge measurements will increase on Cozine Creek to better characterize hydrology and further loading analysis
PSP Areas of Interest Greater Yamhill
0
5
10
15
20
25
30
35
W.F.Palmer Ck @ SELafayette
W.F. Palmer Ck @ SE PalmerCk Rd
W.F. Palmer Ck @ WebfootBr.
Estimated Total Pesticide Loading (2018)Po
unds
per
Year
3764
0 3763
9
3423
2
0
2
4
6
8
10
12
14
16
18
Herbicide Metabolite Fungicide Insecticide
Estimated Total Pesticide Loading by Type (2018)
W.F.Palmer Ck @ SE Lafayette W.F. Palmer Ck @ SE Palmer Ck RdW.F. Palmer Ck @ Webfoot Br.
Pounds
per
Year
PSP Areas of Interest Mid-Coast Planning PartnershipGreater Yamhill
4.5
4.6
4.7
Middle Cozine Lower Cozine
Estimated Total Pesticide Loading (2018)
3423
5
3423
4
Pounds
per
Year
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
Herbicide Metabolite Fungicide Insecticide
Estimated Total Pesticide Loading by Type (2018)
Middle Cozine Lower Conzine
Pounds
per
Year