2.1 ORS Chapter 634, OAR 603-057 & the Oregon Agency Map
Key Takeaways
- ORS Chapter 634 is the State Pesticide Control Act; OAR Chapter 603, Division 057 contains the rules ODA adopts to implement it.
- State pesticide law may be more restrictive than federal law but never less restrictive, and several Oregon rules supersede permissive label language.
- ODA is the lead state agency for pesticide registration, licensing, certification and enforcement, and implements parts of the Worker Protection Standard.
- PARC coordinates pesticide incident reports across agencies but holds no regulatory authority of its own.
- ORS 634.057 preempts most local government pesticide regulation, with narrow exceptions in ORS 634.060 and 634.063.
The Oregon Pesticide Control Act & the Agencies That Enforce It
Why this is on the exam: Domain 4 of the ODA Laws and Safety outline lists "Agency responsibilities" first, and one of the seven agencies named is ORS 634 & OAR 603. The Oregon Core Manual Addendum opens with an entire chapter on which Oregon agency does what. Expect items that hand you a scenario — a fish kill, a worker illness, a spray drift complaint, a forestry helicopter application — and ask which agency you call.
1. Two Layers of Oregon Law: Statute and Rule
Oregon pesticide law is built in two layers, and the exam expects you to keep them straight:
| Layer | Citation | Who writes it | What it contains |
|---|---|---|---|
| Statute | ORS Chapter 634 — the State Pesticide Control Act | The Oregon Legislative Assembly | Definitions, registration mandate, license types, prohibited acts, penalty ceilings, recordkeeping duty, the school IPM law |
| Rule | OAR Chapter 603, Division 057 — Pesticide Control | The Oregon Department of Agriculture (ODA), under rulemaking authority granted by the statute | Fees, license categories and subcategories, standards of competence, record details, chemical-specific limitations, the civil penalty formulas |
ODA has administered this framework since 1953, and has held annual cooperative enforcement agreements with the U.S. EPA covering FIFRA enforcement since 1976.
[!IMPORTANT] State law may be more restrictive, never less. The Oregon Core Manual Addendum states the rule plainly: "State pesticide laws may be more restrictive, but not be less restrictive than federal laws." Several Oregon rules — clopyralid, neonicotinoids on Tilia, chlorpyrifos — supersede the product label. If the label permits a use that an OAR prohibits, the Oregon prohibition wins.
ORS 634.005 — the declared purpose
The Act's own policy statement says its purpose is to regulate the formulation, distribution, storage, transportation, application and use of pesticides in the public interest. That framing is why ODA can act on economic harm (crop destruction, misbranding, fraudulent service claims) as well as on health and environmental harm.
2. Who Regulates Pesticides in Oregon
┌──────────────────────────────────────────────────────────────────────────┐
│ OREGON PESTICIDE AGENCY MAP (Addendum, Chapter 1) │
│ │
│ ODA — Oregon Department of Agriculture, Pesticides Program │
│ • THE lead state agency. Registers pesticide products, licenses and │
│ certifies applicators/consultants/apprentices/operators/dealers, │
│ and carries out enforcement. Also implements parts of the WPS. │
│ │
│ DEQ — Department of Environmental Quality │
│ • Water quality; NPDES pesticide permits; pesticide WASTE disposal │
│ (OAR Chapter 340, Division 109). │
│ │
│ OHA — Oregon Health Authority │
│ • Human health investigation and surveillance of pesticide illness; │
│ drinking water program. │
│ │
│ Oregon OSHA (DCBS) │
│ • Worker safety on the job: respirator programs, hazard communication,│
│ employee training and complaints. │
│ │
│ ODF — Oregon Department of Forestry │
│ • Forest Practices Act (ORS Chapter 527); FERNS notifications for │
│ forest chemical operations. │
│ │
│ ODFW — Department of Fish and Wildlife │
│ • Fish and wildlife kills. │
│ │
│ PARC — Pesticide Analytical and Response Center │
│ • Interagency coordinating body for pesticide incident reports. │
│ │
│ OSU PSEP — Oregon State University Pesticide Safety Education Program │
│ • Education and pre-licence training; NOT a regulator. │
└──────────────────────────────────────────────────────────────────────────┘
The Pesticide Analytical and Response Center (PARC)
PARC is the piece candidates most often miss. It is not a regulator and holds no enforcement authority of its own. PARC is a coordinating centre: it receives reports of pesticide incidents, routes each report to whichever agencies have jurisdiction (ODA for use violations, OHA for human illness, DEQ for water, ODFW for wildlife, Oregon OSHA for worker safety), tracks the investigation, and reports annually. If an exam item describes an incident touching more than one agency's turf, PARC is the coordinating answer; if it describes a use violation, ODA is the enforcement answer.
Local government preemption
ORS 634.057 preempts city, county and other local pesticide regulation, with narrow exceptions in ORS 634.060 and 634.063 (a local government may still regulate its own pesticide use on its own property, for example). An exam item that has a city ordinance banning a state-registered product is testing preemption: local governments generally may not write their own pesticide use rules.
3. Reading a Citation on the Exam
Oregon exam items frequently quote a citation instead of describing the rule. Learn to decode them:
- ORS 634.016 — every pesticide product distributed, sold or offered for sale in Oregon must be registered with ODA, annually.
- ORS 634.116 — pesticide operator licence, including the financial-responsibility (insurance) requirement.
- ORS 634.146 — records required of pesticide operators, and the three-year retention period.
- ORS 634.372 — the list of prohibited acts.
- ORS 634.700–634.750 — the IPM in Schools law.
- ORS 634.900 — civil penalty ceilings.
- ORS 634.992 — criminal penalties (Class A misdemeanour).
- OAR 603-057-0130 — applicator's records and reports.
- OAR 603-057-0140 — pesticide dealer records.
- OAR 603-057-0378 / -0388 / -0392 / -0545 — clopyralid / four neonicotinoids on Tilia / aminocyclopyrachlor / chlorpyrifos.
A pesticide application results in a bee kill, a stream fish kill, and two farm workers reporting illness. Which Oregon body exists specifically to coordinate an incident that crosses several agencies' jurisdictions?
An Oregon administrative rule prohibits applying a product to a site that the federally approved label expressly allows. What is the applicator's legal obligation?