Clackamas Basin Council Meeting

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Clackamas Basin Council Meeting
APRIL 2008

• DEQ Clackamas River Basin Pesticide Monitoring
• 2005-2007 Findings
• Kevin Masterson
• Oregon Department of Environmental Quality
• [phone]
• masterson.kevin_at_deq.state.or.us

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Overview

• Summary of Pesticide Stewardship Partnership
  approach
• DEQ Clackamas Pesticide Monitoring
• Where and when was monitoring conducted?
• Monitoring Results
• Next steps for monitoring and stewardship
  activities

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Pesticide Stewardship PartnershipsOverview
KEY STEPS IN PARTNERSHIP PROJECTS

• Monitor for current use pesticides in
• surface waters from drift runoff
• Identify streams with elevated pesticide
  concentrations
• Collaborate to implement voluntary
  best management practices
• Follow-up monitoring to determine water quality
  improvements over time

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Pesticide Stewardship PartnershipsHistorical
Perspective
HOOD RIVER PILOT PROJECT
Chlorpyrifos Monitoring Lower Neal Creek
2000-2004
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DEQ Pesticide Monitoring Overview

• What have we sampled for?
• Organophosphate (OP) insecticides and 2 triazine
  herbicides
• Why sample for these?
• Current use products
• OP pesticides very toxic to aquatic life

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Clackamas Pesticide Monitoring Locations
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2005 - 2007 Clackamas Pesticide Monitoring
Activity

• Monitoring time frames and frequency
• Spring March June (weekly)
• Fall September November (3 x)
• 2005-2007 monitoring data comparison
  considerations
• Grab samples at times when pesticide
  application is likely to occur
• 197 samples collected and analyzed through June
  2007
• 2007 results include spring, but not fall samples
• Analytical detection limit 0.025 µg/l (parts
  per billion)

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DEQ Clackamas Monitoring Results General
Findings

• All Sites
• 9 of 17 (53) pesticides and breakdown products
  tested for were found at least once
• Two organophosphate (OP) insecticides were found
  at levels that exceed state water quality
  criteria
• Site-Specific
• The greatest number of pesticides and most WQ
  criteria exceedances were found in North Fork
  Deep Creek
• Multiple OP detections in Noyer Creek, including
  highest chlorpyrifos concentration
• The herbicide simazine was found most frequently
  and at the highest concentrations in Sieben Creek

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Azinphos-methyl WQS (0.01 ug/l)
Diazinon Acute WQ Guidance Value (0.08 ug/l)
Dizainon chronic WQ guidance value (0.05 ug/l)
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Azinphos-methyl WQS (0.01 ug/l)
Diazinon Acute WQ guidance value (0.08 ug/l)
Dizainon chronic WQ guidance value (0.05 ug/l)
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Azinphos-methyl WQS (0.01 ug/l)
Diazinon Acute WQ guidance value (0.08 ug/l)
Dizainon chronic WQ guidance value (0.05 ug/l)
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Azinphos-methyl WQS (0.01 ug/l)
Diazinon Acute WQ guidance value (0.08 ug/l)
Dizainon chronic WQ guidance value (0.05 ug/l)
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Next StepsMonitoring and Stewardship Activities

• DEQ expanding list of pesticides to be included
  in lab analyses, such as
• Phenoxy herbicides (e.g., 2,4-D)
• Carbamates (e.g., Carbaryl)
• Fungicides (eg. Chlorothalonil)
• Working towards more stable funding for
  monitoring efforts
• State agencies (DEQ, ODA, ODF, Health) working
  together on statewide pesticide water quality
  plan
• Clackamas may be focus of pilot project
• How do we build on existing partnerships and
  projects in the Clackamas to maximize
  effectiveness?
• Enlist all key player ? Basin Council, grower
  groups, SWCD, OSU Extension, state agencies,
  water providers, local governments ....others?