# 1 Oregon Association of Nurseries Meeting

DEQ/USGS Clackamas River Basin Pesticide Monitoring: 2005-2007 Findings

Kevin Masterson Oregon Department of Environmental Quality (503) 229-5615 masterson.kevin@deq.state.or.us 

## JUNE 24, 2008 

# 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



# Pesticide Stewardship Partnerships: Overview

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 KEY STEPS IN PARTNERSHIP PROJECTS 

# Pesticide Stewardship Partnerships: Historical Perspective

HOOD RIVER PILOT PROJECT

0.000 0.050 0.100 0.150 0.200 0.250

2001 2002 2003 2004
YearChlorpyrifos (ug/L)

0.00 0.10 0.20 0.30 0.40 0.50 0.60Frequency of Detection

Average Frequency 

### Chlorpyrifos Monitoring: Lower Neal Creek 2000-2004



# 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 Fenvalerate + Esfenvalerate Chlorpyrifos (Lorsban, Dursban) Pyriproxyfen Malathion Oxygen Analog Imidan Malathion Diazinon Methylparathion Azinphos-methyl Oxygen Analog Atrazine Azinphos-methyl (Guthion) Simazine Phosmet Oxygen Analog Dimethoate Chlorpyrifos oxon Ethoprop (Mocap) 

# USGS and DEQ Clackamas Study Area

# 2 Clackamas Pesticide Monitoring Locations

Sieben Creek

• At Hwy 212, adjacent to Shadowbrook Mobile Home Park 

## Rock Creek

• At 172 nd 

### , Stoney Brook Court 

## Trillium Creek

• At Andregg Street, near Damascus 

## Noyer Creek

• Off of Hwy 212, near St. Paul Lutheran Church between Damascus & Boring 

## North Fork Deep Creek

• In Boring, between 2 nd 

### & 3 rd 

### electric tower from trailhead for Springwater Corridor R oc k C r e e k

N o y e r C r .

N . F o r k D e e p C k

D e e p C k 

## Aerial view of DEQ monitoring locations

N. Fork Deep Creek

Nurseries Golf Course 

# Mixed Land Use Agriculture • Berries • Christmas Trees • Nurseries • Strawberries


# “Urban” • Housing Developments • Shopping Centers • Golf Courses 

# Forestry • Private • Federal



# 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) 

# Differences Between DEQ and USGS Monitoring in Clackamas Basin

Subset of USGS pesticides (7) 86 to 198 pesticides Pesticides Analyzed 

## DEQ USGS Activity

5 tributaries that were included in USGS study Tributaries plus Clackamas River & treated drinking water Sample Locations Grab samples Spring: weekly Fall: 3X per year? (total = 197 samples) Tribs: 2 spring & 2 fall storms Clackamas R/Treated Drinking Water: Fixed Interval & Storms (total = 119 samples) Sampling Schedule 2005 - 2007 2000 - 2005 Sample period

# 3 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 Percent of Sampling Events that Pesticides Detected

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

2005 2006 2007Pesticides detected (%)

Clackamas Pesticide Detection Frequency: All Sites 2005-2007

0% 5% 10% 15% 20% 25% 30%AzinphosmethylChlorpyrifosDiazinonProphosSimazineAtrazineDimethoateDetection Frequency 

### North Fork Deep Creek at Springwater Trail Detection Frequencies

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%AzinphosmethylChlorpyrifosDiazinonProphosSimazineAtrazineDimethoateDetection Frequency (%) 

### 2005 2006 2007



## Noyer Creek at St. Paul Church Hwy 212 Detection Frequencies

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%AzinphosmethylChlorpyrifosDiazinonProphosSimazineAtrazineDimethoateDetection Frequency (%) 

### 2005 2006 2007 

## Rock Creek at 172nd Stony Brook Ct. Detection Frequencies

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%AzinphosmethylChlorpyrifosDiazinonProphosSimazineAtrazineDimethoateDetection Frequency (%) 

### 2005 2006 2007

# 4 Sieben Creek at Hwy 212 Detection Frequencies

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%AzinphosmethylChlorpyrifosDiazinonProphosSimazineAtrazineDimethoateDetection Frequency (%) 

### 2005 2006 

## North Fork Deep Creek at Springwater Trail Average Pesticide Concentrations

0.000 0.050 0.100 0.150 0.200 0.250 0.300AzinphosmethylChlorpyrifosDiazinonProphosSimazineAtrazineDimethoateMean (ug/L) 

### 2005 2006 2007 Chlorpyrifos Chronic WQS (0.041 ug/l) Chloryprifos Acute WQS (0.083 ug/l) 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)



## North Fork Deep Creek at Springwater Trail Maximum Pesticide Concentrations

0.000 0.200 0.400 0.600 0.800 1.000 1.200 1.400 1.600 1.800AzinphosmethylChlorpyrifosDiazinonProphosSimazineAtrazineDimethoateMaximum (ug/L) 

### 2005 2006 2007

Azinphos-methyl WQS (0.01 ug/l )

Chlorpyrifos Chronic WQS (0.041 ug/l) Chloryprifos Acute WQS (0.083 ug/l)

Diazinon Acute WQ guidance value (0.08 ug/l) Dizainon chronic WQ guidance value (0.05 ug/l) 

## Noyer Creek at St. Paul Church Hwy 212 Average Pesticide Concentrations

0.000 0.050 0.100 0.150 0.200 0.250 0.300AzinphosmethylChlorpyrifosDiazinonProphosSimazineAtrazineDimethoateMean (ug/L) 

### 2005 2006 2007
Azinphos-methyl WQS (0.01 ug/l )

Chlorpyrifos Chronic WQS (0.041 ug/l) Chloryprifos Acute WQS (0.083 ug/l)

Diazinon Acute WQ guidance value (0.08 ug/l) Dizainon chronic WQ guidance value (0.05 ug/l)



## Noyer Creek at St. Paul Church Hwy 212

Maximum Pesticide Concentrations

0.000 0.500 1.000 1.500 2.000 2.500AzinphosmethylChlorpyrifosDiazinonProphosSimazineAtrazineDimethoateMaximum (ug/L) 

### 2005 2006 2007
Azinphos-methyl WQS (0.01 ug/l )

Chlorpyrifos Chronic WQS (0.041 ug/l) Chloryprifos Acute WQS (0.083 ug/l)

Diazinon Acute WQ guidance value (0.08 ug/l) Dizainon chronic WQ guidance value (0.05 ug/l) 

## Sieben Creek at Hwy 212 Maximum Pesticide Concentrations

0.000 0.100 0.200 0.300 0.400 0.500 0.600 0.700 0.800 0.900 1.000AzinphosmethylChlorpyrifosDiazinonProphosSimazineAtrazineDimethoateMaximum (ug/L) 

### 2005 2006 2007

# 5 USGS Clackamas Monitoring Results

0 10 20 30 40 50 60SimazineAtrazineMetolachlorDiuron2,4-DDiazanonTriflualinPrometonTriclopyrMetalaxylChlorpyrifosCarbarylDacthal% Detections 

# USGS 2000 - 2005 Clackamas SW Monitoring % Detections (for n >90)

0 10 20 30 40 50 60NapropamideAtrazineSimazineDiuronDiazanonMetolachlorTriflualinMetalaxylChlorpyrifosPrometonEthoprop2,4-DDacthalCarbarylTriclopyr% Detections 

# USGS 2000 - 2004 Clackamas SW Monitoring % Detections

0 10 20 30 40 50 60 70 80 90 100Metolachlor2,4-DSimazineGlyphosateAtrazineDiuronNapropamideEthopropTriclopyrPrometonCarbarylDiazanonTriflualinChlorpyrifosDacthalMetalaxyl% Detections 

# USGS 2005 Clackamas SW Monitoring Top % Detections (n = 33)

0 5 10 15 20 25 30 35 40 45 50AtrazineSimazineMetolachlorDiuronTriflualinDiazanonMetalaxylChlorpyrifosPrometonNapropamideDacthalCarbaryl2,4-DTriclopyrEthopropGlyphosateNumber of Detections 2000-200 4 2005 

# USGS Clackamas SW Monitoring Comparison 2000-04 vs. 2005 (# Detections)

Year cut off

0 10 20 30 40 50 60 70 80 90 100Metolachlor2,4-DSimazineGlyphosateAtrazineDiuronNapropamideEthopropTriclopyrPrometonCarbarylDiazanonTriflualinChlorpyrifosDacthalMetalaxyl% Detections 2000-2004 2005 

## USGS Clackamas SW Monitoring Comparison 2000-04 vs. 2005 (% Detections)

# 6 Next Steps: Monitoring 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 Æ Basin Council, grower groups, SWCD, OSU

Extension, state agencies, water providers, local governments .......others?