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PMP and Homeowner Use of Pyrethroids

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PMP and Homeowner Use of Pyrethroids PMP and Homeowner Use of Pyrethroids Cheryl Wilen Area IPM Advisor UC Statewide IPM Program and UCCE Rain / Irrigation Urban Application Runoff Carries Runoff Plants / Soil Pesticides Paved Surfaces to Creeks Di sc Even treated Dischargeha water has rg Storm Drain Outfall pesticide detections!! Figure courtesy SF Bay Regional Water Board, based on U.C. IPM Project drawing Bay Area Diazinon & Chlorpyrifos Use Decreased from 2000-2003 130,000 120,000 Chlorpyrifos Diazinon 110,000 100,000 90,000 Lb AI 80,000 70,000 60,000 50,000 40,000 2000 2001 2002 2003 Bay Area Pyrethroids Use Increased Greatly 700,000 600,000 500,000 400,000 Cypermethrin Bifenthrin 300,000 200,000 100,000 0 2001 2002 2003 2004 Urban Use of Pesticides • Primarily pyrethroids – bifenthrin, cyfluthrin, cypermethrin, deltamethrin, esfenvalerate, lambda- cyhalothrin, permethrin, tralomethrin – malathion, fipronil, carbaryl •Why? •Ants •Spiders •Garden Pests CalAg Use and Formulation • Ants were the problem where people were most likely to use a pesticide (48%) followed by snails/slugs (13%) • 50% of pesticides used in previous 6 months were ready to use sprays (aerosol) Scenarios for Surface Water Protection Drift Runoff Ag Non-Production Ag (golf Production courses), Outdoor Structural, Residential, Industrial, and Institutional Use Proposed Regulations* If the pesticide is: injected into soil; immediately incorporated into soil; applied to animal burrows; injected into or painted or wicked onto plants; applied to water in compliance with all regulatory requirements; or is an enclosed baits OR the pest control business making the pesticide application is certified by an organization that has adopted the standards or requirements of a green or sustainable program approved by the director, and the application be in compliance with those standards or requirements THEN These uses and sites are exempt from the requirements presented in the draft surface water regulation concepts. *Abridged for Structural Proposed Regulations* • Do not make applications if a storm event, forecasted by the National Weather Service, is to occur within 48 hours following the application; AND • All outdoor non-termiticide applications to impervious surfaces such as sidewalks, driveways, and structure walls shall be limited to spot and crack-and-crevice applications only. This does not apply to applications to building foundations, up to a maximum height of three feet; AND • Sweep pesticide granules off nonpervious surfaces; AND • If the concrete slab is not to be poured before rainfall is possible, cover termiticides after application to prevent runoff; AND • Do not make intentional applications to saturated soils; AND • Do not apply within ten feet of any drain; AND • Except when applying to sewers or drains as directed on the pesticide label, do not apply directly into sewers or drains, or to any area like a gutter where drainage to sewers, storm drains, or sensitive aquatic sites can occur; AND • Do not apply unless the property operator or resident has been advised not to allow irrigation runoff for 72 hours after application Timeline • November 2009 – DPR to meet with committees of the organizations that represent wastewater treatment facilities and storm water agencies to discuss potential requirements to protect surface water. • January or February 2010 to ~July 2010 – DPR will start meeting with representatives of the agricultural industry and pest control businesses to discuss potential requirements to protect surface water. • After ~July 2010 to ~July 2011 – If DPR decides to adopt regulations to protect surface water, DPR will draft a regulation package to initiate the formal process of regulation adoption.. All interested stakeholders will have an opportunity to comment on any formal proposal during the formal adoption process. .
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