Pesticide Stewardship Partnership & Urban Pesticide Use Benton - - PowerPoint PPT Presentation

Pesticide Stewardship Partnership & Urban Pesticide Use

Benton County Cooperative Weed Management Area Meeting Feb 28, 2017

3/2/2017 1

The Pesticide Stewardship Partnership Program is being implemented in nine watershed across Oregon These watersheds represent diverse land uses including agricultural, industrial, urban, and forestry uses In several watersheds multiple land uses are being monitored to characterize pesticide use and evaluate current management actions that either prevent or contribute to pesticide residuals in ground and surface waters of the state In four of the watersheds urban pesticide use is being monitored. This includes: Clackamas Yamhill Amazon Middle Rogue

3/2/2017 2

Currently Active PSP Watershed or Pilot Area Monitoring Sites

3/2/2017 3

Surface water quality monitoring occurs at stream locations which are selected jointly by DEQ and PSP watershed partners and may vary from year to year based on previous years findings. Generally there are “long term” sites which do not change. Sampling schedules are based on local knowledge as to when pesticide applications may begin and end. This generally results in sampling occurring beginning in March and running through July and beginning again in September and running through October/November Groundwater monitoring is beginning conducted thru DEQ’s GW assessment monitoring

• program. Thus far Middle Rouge,

Walla Walla have been done with N. Willamette scheduled for 2017.

3/2/2017 4

Herbicides

By far the most detected class of pesticides found in the PSP program are the herbicides accounting for approximately 65 -70% of all the detections occurring between 2010 and 2015. This compares favorably with a recently completed WSDA study in the Puget Sound on urban pesticide use. In urban areas the number of herbicides detected is limited compared to those in rural or agricultural areas; however, the concentrations detected of those found in urban areas tend to be higher. The most commonly detected herbicides in urban areas are: 2,4-D Variety of homeowner products Glyphosate Round-Up Triclopyr Variety of homeowner products Diuron Karmax AMPA Breakdown of Glyphosate 2,6-Dichlorobenzamide Breakdown of Dichlobenil

3/2/2017 5

500 1000 1500 2000 2500 3000 Herbicides Insecticides Moss Control Slug Control Fungicides Mole and Gopher

Urban Puget Sound – Pesticide Use Responses

Number of Positive Responses

Kelly McLain, WSDA 2014 3/2/2017 6

Urban Herbicide Use

A majority of the herbicides used in the urban (Western Oregon/ Washington) environment are for the treatment of lawn weeds. This is followed by treatments for gardens (non-food), driveways, and roof tops. Below is a generalized use chart of pesticide application.

0% 2% 4% 6% 8% 10% 12% 14% McLain 2014

3/2/2017 7

36 20 19 11 14

Urban Puget Sound Most Treated Locations

Lawns Gardens Foundations Roofs Driveways

Kelly McLain, WSDA 2014 3/2/2017 8

Examples of Herbicide Results from Urban Monitoring Locations

3/2/2017 9

Monitoring Station 25624 – South Eugene

3/2/2017 10

1 2 3 4 5 6 7 8

3/24/11 5/24/11 7/24/11 9/24/11 11/24/11 1/24/12 3/24/12 5/24/12 7/24/12 9/24/12 11/24/12 1/24/13 3/24/13 5/24/13 7/24/13 9/24/13 11/24/13 1/24/14 3/24/14 5/24/14 7/24/14 9/24/14 11/24/14 1/24/15 3/24/15 5/24/15 7/24/15 9/24/15 U g / L

2,4 D Results

Amazon Watershed Station 25624

0.5 1 1.5 2

3/24/11 5/24/11 7/24/11 9/24/11 11/24/11 1/24/12 3/24/12 5/24/12 7/24/12 9/24/12 11/24/12 1/24/13 3/24/13 5/24/13 7/24/13 9/24/13 11/24/13 1/24/14 3/24/14 5/24/14 7/24/14 9/24/14 11/24/14 1/24/15 3/24/15 5/24/15 7/24/15 9/24/15 U g / L

Triclopyr Results 2,4-D and Triclopyr are active ingredients in several herbicides including Crossbow & Chaser Many “premixed” products for home use contain several active ingredients

EPA DWS 70 ug/L EPA ALM 26 ug/L HBSL 300 ug/L EPA ALB 13.1 ug/L 3/2/2017 11

MFR Trade Name Form Chemical(s) Scotts Turf Builder Plus Granular 2,4-D, MCPP Lilly-MIller Lawn Weed Killer

• Liq. Conc.

2,4-D, MCPP, dicamba Ortho GroundClear Complete Veg. Killer liquid Glyphosate, Imazapyr Ortho Weed-B-Gone Liquid Triclopyr, MCPP, dicamba Preen Garden Weed Preventer Granular Trifluralin Scotts Turf Builder with Halts (30-3-4) Granular Pendimethalin Spectracide Triple Strike Liquid Diquat, Fluazifop, Dicamba Examples of Homeowner Products with Multiple A.I.’s

3/2/2017 12

50 100 150 200 250 300 350 400 450

5/9/13 6/9/13 7/9/13 8/9/13 9/9/13 10/9/13 11/9/13 12/9/13 1/9/14 2/9/14 3/9/14 4/9/14 5/9/14 6/9/14 7/9/14 8/9/14 9/9/14 10/9/14 11/9/14 12/9/14 1/9/15 2/9/15 3/9/15 4/9/15 5/9/15 6/9/15 7/9/15 8/9/15 9/9/15 10/9/15 n g / L

2,6-Dichlorobenzamide

Amazon Watershed Station 25624 In several cases, WQ monitoring does not detect the original pesticide but rather the breakdown product or

• metabolite. In some cases that

metabolite may be more toxic than the original pesticide or may be more mobile in the environment

20 40 60 80 100 6/3/13 8/3/13 10/3/13 12/3/13 2/3/14 4/3/14 6/3/14 8/3/14 10/3/14 12/3/14 2/3/15 4/3/15 6/3/15 8/3/15 10/3/15 n g / L

Dichlobenil (Casoron)

EPA HHBM 29 ug/L EPA HHBM 60 ug/L 3/2/2017 13

Amazon Watershed Station 25624

100 200 300 400 500 600 700 800

n g / L

Glyphosate Results

50 100 150 200

n g / L

AMPA Results

EPA DWS 700000 ng/L EPA ALB 1800000 ng/L EPA ALM 249500000 ng/L 3/2/2017 14

20 40 60 80 100 120 140 160 180 200

3/24/11 5/24/11 7/24/11 9/24/11 11/24/11 1/24/12 3/24/12 5/24/12 7/24/12 9/24/12 11/24/12 1/24/13 3/24/13 5/24/13 7/24/13 9/24/13 11/24/13 1/24/14 3/24/14 5/24/14 7/24/14 9/24/14 11/24/14 1/24/15 3/24/15 5/24/15 7/24/15 9/24/15

n g / L

Diuron Results

Amazon Watershed Station 25624 Diuron is a broad spectrum herbicide used in agricultural, urban, and rural areas. It is the generally the most detected herbicide in the watersheds sampled. Indications are that its primary use in these settings is right of way maintenance. It has limited registered use In urban landscape environments.

EPA ALBM 2400 ng/L 3/2/2017 15

Monitoring Station 34234 – South McMinnville

3/2/2017 16

0.2 0.4 0.6 0.8 1 1.2 1.4 1.6

4/7/10 7/7/10 10/7/10 1/7/11 4/7/11 7/7/11 10/7/11 1/7/12 4/7/12 7/7/12 10/7/12 1/7/13 4/7/13 7/7/13 10/7/13 1/7/14 4/7/14 7/7/14 10/7/14 1/7/15 4/7/15 7/7/15 10/7/15

u g / L

2,4-D Results

EPA DWS 70 ug/L 0.1 0.2 0.3 0.4 0.5 0.6 0.7

4/7/10 7/7/10 10/7/10 1/7/11 4/7/11 7/7/11 10/7/11 1/7/12 4/7/12 7/7/12 10/7/12 1/7/13 4/7/13 7/7/13 10/7/13 1/7/14 4/7/14 7/7/14 10/7/14 1/7/15 4/7/15 7/7/15 10/7/15

u g / L

Triclopyr Results

EPA ALM 26 ug/L HBSL 300 ug/L

Yamhill Watershed Station 34234

3/2/2017 17

Yamhill Watershed Station 34234

100 200 300 400 500 600 n g / L

Glyphosate Results

EPA DWS 700000 ng/L 500 1000 1500 2000 2500 n g / L

AMPA Results

EPA ALM 249500000 ng/L 3/2/2017 18

200 400 600 800 1000 1200 1400 1600 1800

4/7/10 7/7/10 10/7/10 1/7/11 4/7/11 7/7/11 10/7/11 1/7/12 4/7/12 7/7/12 10/7/12 1/7/13 4/7/13 7/7/13 10/7/13 1/7/14 4/7/14 7/7/14 10/7/14 1/7/15 4/7/15 7/7/15 10/7/15

n g / L

Diuron Results

EPA ALBM 2400 ng/L

Yamhill Watershed Station 34234

3/2/2017 19

Because of the proximity of the sampling site to agricultural lands it is likely that there is some herbicides being detected that are not related to strictly urban use. Yamhill Watershed Station 34234

50 100 150 200

4/7/10 7/7/10 10/7/10 1/7/11 4/7/11 7/7/11 10/7/11 1/7/12 4/7/12 7/7/12 10/7/12 1/7/13 4/7/13 7/7/13 10/7/13 1/7/14 4/7/14 7/7/14 10/7/14 1/7/15 4/7/15 7/7/15 10/7/15

n g / L

Atrazine Results

500 1000 1500 2000 4/7/10 7/7/10 10/7/10 1/7/11 4/7/11 7/7/11 10/7/11 1/7/12 4/7/12 7/7/12 10/7/12 1/7/13 4/7/13 7/7/13 10/7/13 1/7/14 4/7/14 7/7/14 10/7/14 1/7/15 4/7/15 7/7/15 10/7/15

n g / L

Simazine Results

EPA ALB 2240 ng/L EPA DWS 3000 ng/L EPA ALB 1 ng/L EPA DWS 4000 ng/L 3/2/2017 20

Yamhill Watershed Station 34234

500 1000 1500

4/7/10 7/7/10 10/7/10 1/7/11 4/7/11 7/7/11 10/7/11 1/7/12 4/7/12 7/7/12 10/7/12 1/7/13 4/7/13 7/7/13 10/7/13 1/7/14 4/7/14 7/7/14 10/7/14 1/7/15 4/7/15 7/7/15 10/7/15

n g / L

Metolachlor Results

50 100 150 200 250

4/7/10 7/7/10 10/7/10 1/7/11 4/7/11 7/7/11 10/7/11 1/7/12 4/7/12 7/7/12 10/7/12 1/7/13 4/7/13 7/7/13 10/7/13 1/7/14 4/7/14 7/7/14 10/7/14 1/7/15 4/7/15 7/7/15 10/7/15

n g / L

Metribuzin Results

EPA ALB 10000 ng/L EPA ALB 8700 ng/L 3/2/2017 21

Water quality monitoring for urban use herbicides can be complicated in areas that transition from agricultural / forestry land use to urban This is due to the fact that in several cases herbicides are registered for use in homeowner, agricultural, and forestry applications, for example: Metolachlor Agricultural, residential lawns (cert. app) Metsulfuron Methyl Agricultural, residential, forestry Glyphosate Agricultrual, residential, forestry Simazine Agricultural, residential, forestry Benefin Agricultural, residential Triclopry Industrial, right-of-way, residential, forestry

3/2/2017 22

Future Considerations for PSP’s

Six of the nine PSP areas will be looking more intensely at urban monitoring locations with monitoring sites located to reduce the possibility of other potential sources of contamination

Take Away’s

 Urban pesticide use is contributing to water quality impacts  This contribution can impact aquatic life and possibility human health  Need to look equally at all sources of herbicide contamination and develop management measures for various land uses  Need for development of effective outreach and education trageted to urban home owners regarding safe and effective herbicide use

3/2/2017 23