---
type: "Bill"
title: "Creating a work group on aerial pesticide applications in forestlands."
description: "Creating a work group on aerial pesticide applications in forestlands."
jurisdiction: "us/states/wa"
legislature: "Washington Legislature"
session: "2019-2020"
identifier: "SB 5597"
citation: "Washington SB 5597 (2019-2020)"
classification: ["bill"]
subjects: ["PEST CONTROL AND PESTICIDES", "AERONAUTICS", "FOREST LAND"]
status: "enacted"
primary_sponsors: ["Rolfes"]
version_count: 2
action_count: 33
vote_count: 3
first_action: "2019-01-24"
last_action: "2019-05-09"
source: "openstates"
source_identifier: "ocd-bill/35f6b39b-adc7-4f72-8f29-afa415d41631"
source_url: "http://apps.leg.wa.gov/billinfo/summary.aspx?bill=5597&year=2019"
source_hash: "9fb4fba4b16b7854cc32f3edfb335b1fc3d3e5c51cdfb1042ac4679c13a8263a"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-wa"]
---

# Washington SB 5597 (2019-2020) — Creating a work group on aerial pesticide applications in forestlands.

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2019-20/Htm/Bills/Senate%20Bills/5597.htm)
2. **Substitute Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2019-20/Htm/Bills/Senate%20Bills/5597-S.htm)

## Votes

- 3rd Reading & Final Passage (#16) — **47–0** (pass) · upper
- Final Passage as Amended by the House (#35) — **48–1** (pass) · upper
- Final Passage as Amended by the House (#11) — **95–1** (pass) · lower

## Sponsors

- Rolfes — primary (person)
- Conway — cosponsor (person)
- Hasegawa — cosponsor (person)
- McCoy — cosponsor (person)
- Saldaña — cosponsor (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2019-01-24** First reading, referred to Agriculture, Water, Natural Resources & Parks. `reading-1`
- **2019-02-21** AWNP - Majority; 1st substitute bill be substituted, do pass. `passage`
- **2019-02-21** Minority; without recommendation.
- **2019-02-22** Passed to Rules Committee for second reading.
- **2019-02-26** Placed on second reading by Rules Committee.
- **2019-03-04** 1st substitute bill substituted. `substitution`
- **2019-02-21** AWNP - Majority; 1st substitute bill be substituted, do pass. `passage`
- **2019-02-21** Minority; without recommendation.
- **2019-02-22** Passed to Rules Committee for second reading.
- **2019-02-26** Placed on second reading by Rules Committee.
- **2019-03-04** 1st substitute bill substituted. `substitution`
- **2019-03-04** Rules suspended. Placed on Third Reading.
- **2019-03-04** Third reading, passed; yeas, 47; nays, 0; absent, 0; excused, 2. `reading-3`
- **2019-03-06** First reading, referred to Rural Development, Agriculture, & Natural Resources. `reading-1`
- **2019-04-03** RDAN - Majority; do pass with amendment(s).
- **2019-04-03** Referred to Rules 2 Review.
- **2019-04-10** Rules Committee relieved of further consideration. Placed on second reading.
- **2019-04-16** Committee amendment not adopted. `amendment-failure`
- **2019-04-16** Floor amendment(s) adopted.
- **2019-04-16** Rules suspended. Placed on Third Reading.
- **2019-04-16** Third reading, passed; yeas, 95; nays, 1; absent, 0; excused, 2. `reading-3`
- **2019-04-22** Senate concurred in House amendments.
- **2019-04-22** Passed final passage; yeas, 48; nays, 1; absent, 0; excused, 0. `passage`
- **2019-04-24** President signed. `passage`
- **2019-04-24** Speaker signed. `passage`
- **2019-04-25** Delivered to Governor.
- **2019-05-09** Governor signed. `executive-signature`
- **2019-05-09** Chapter 355, 2019 Laws. `became-law`
- **2019-05-09** Effective date 7/28/2019. `became-law`
- **2019-02-07T18:30:00+00:00** Scheduled for public hearing in the Senate Committee on Agriculture, Water, Natural Resources & Parks at 01:30 PM
- **2019-02-21T18:30:00+00:00** Scheduled for public hearing in the Senate Committee on Agriculture, Water, Natural Resources & Parks at 01:30 PM
- **2019-03-22T14:00:00+00:00** Scheduled for public hearing in the House Committee on Rural Development, Agriculture, & Natural Resources at 10:00 AM
- **2019-04-03T12:00:00+00:00** Scheduled for public hearing in the House Committee on Rural Development, Agriculture, & Natural Resources at 08:00 AM

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/35f6b39b-adc7-4f72-8f29-afa415d41631`. Confidence: reported (aggregated from official Washington legislature records).