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WASHINGTON PESTICIDE LAWS AND SAFETY: WPS
REQUIREMENTS, PESTICIDE FORMULATIONS, AND LABEL
MATH Questions with Answers and Rationales
Section 1: Worker Protection Standard (WPS) Requirements
(Questions)
1. What does the Worker Protection Standard (WPS)
regulate?
A. Only pesticide manufacturing
B. Protection of agricultural workers and pesticide handlers
from occupational pesticide exposure
C. Only residential pesticide use
D. Only structural pest control
Answer: B
Rationale: The WPS is an EPA regulation (40 CFR Part 170)
designed to reduce the risk of pesticide exposure to
agricultural workers (field workers) and pesticide
handlers (those who mix, load, or apply pesticides) on
farms, forests, nurseries, and greenhouses.
2. What is a "worker" under the WPS?
A. Anyone on the farm
B. A person employed for compensation who performs
tasks related to agricultural production (e.g., harvesting,
weeding, irrigation) but does NOT handle pesticides
C. Only pesticide applicators
,https://www.stuvia.com/user/performance
D. Only family members
Answer: B
Rationale: Under WPS, a "worker" performs agricultural
tasks such as planting, cultivating, harvesting, or packing,
but does not handle pesticides. Workers are protected
from exposure to residues on treated crops and surfaces.
3. What is a "handler" under the WPS?
A. A person who only harvests crops
B. A person who mixes, loads, applies, cleans, repairs, or
otherwise handles pesticides or application equipment
C. A person who only sells pesticides
D. A person who transports crops
Answer: B
Rationale: A "handler" is anyone who works directly with
pesticides—mixing, loading, applying, disposing, cleaning
equipment, or performing other tasks involving direct
contact with pesticides. Handlers require more training
and PPE than workers.
4. What is the Restricted Entry Interval (REI) under the WPS?
A. The time before application
B. The period after pesticide application during which
entry into the treated area is restricted for workers and
other persons without proper PPE and training
C. The time between applications
, https://www.stuvia.com/user/performance
D. The storage time
Answer: B
Rationale: The REI is the minimum time after application
when entry to the treated area is prohibited except for
trained and properly equipped early-entry workers. REIs
are listed on the pesticide label.
5. Where is the REI found for a specific pesticide?
A. On the SDS only
B. On the pesticide label, usually in the Agricultural Use
Requirements box under the WPS section
C. In the manufacturer's catalog
D. It is not listed anywhere
Answer: B
Rationale: The REI is specified on the pesticide label,
typically in the "Agricultural Use Requirements" box or
the Directions for Use section, under WPS compliance
information.
6. What is the minimum REI for most pesticides if the label
does not specify a longer interval?
A. 4 hours
B. 12 hours
C. 24 hours
D. 48 hours
Answer: B
WASHINGTON PESTICIDE LAWS AND SAFETY: WPS
REQUIREMENTS, PESTICIDE FORMULATIONS, AND LABEL
MATH Questions with Answers and Rationales
Section 1: Worker Protection Standard (WPS) Requirements
(Questions)
1. What does the Worker Protection Standard (WPS)
regulate?
A. Only pesticide manufacturing
B. Protection of agricultural workers and pesticide handlers
from occupational pesticide exposure
C. Only residential pesticide use
D. Only structural pest control
Answer: B
Rationale: The WPS is an EPA regulation (40 CFR Part 170)
designed to reduce the risk of pesticide exposure to
agricultural workers (field workers) and pesticide
handlers (those who mix, load, or apply pesticides) on
farms, forests, nurseries, and greenhouses.
2. What is a "worker" under the WPS?
A. Anyone on the farm
B. A person employed for compensation who performs
tasks related to agricultural production (e.g., harvesting,
weeding, irrigation) but does NOT handle pesticides
C. Only pesticide applicators
,https://www.stuvia.com/user/performance
D. Only family members
Answer: B
Rationale: Under WPS, a "worker" performs agricultural
tasks such as planting, cultivating, harvesting, or packing,
but does not handle pesticides. Workers are protected
from exposure to residues on treated crops and surfaces.
3. What is a "handler" under the WPS?
A. A person who only harvests crops
B. A person who mixes, loads, applies, cleans, repairs, or
otherwise handles pesticides or application equipment
C. A person who only sells pesticides
D. A person who transports crops
Answer: B
Rationale: A "handler" is anyone who works directly with
pesticides—mixing, loading, applying, disposing, cleaning
equipment, or performing other tasks involving direct
contact with pesticides. Handlers require more training
and PPE than workers.
4. What is the Restricted Entry Interval (REI) under the WPS?
A. The time before application
B. The period after pesticide application during which
entry into the treated area is restricted for workers and
other persons without proper PPE and training
C. The time between applications
, https://www.stuvia.com/user/performance
D. The storage time
Answer: B
Rationale: The REI is the minimum time after application
when entry to the treated area is prohibited except for
trained and properly equipped early-entry workers. REIs
are listed on the pesticide label.
5. Where is the REI found for a specific pesticide?
A. On the SDS only
B. On the pesticide label, usually in the Agricultural Use
Requirements box under the WPS section
C. In the manufacturer's catalog
D. It is not listed anywhere
Answer: B
Rationale: The REI is specified on the pesticide label,
typically in the "Agricultural Use Requirements" box or
the Directions for Use section, under WPS compliance
information.
6. What is the minimum REI for most pesticides if the label
does not specify a longer interval?
A. 4 hours
B. 12 hours
C. 24 hours
D. 48 hours
Answer: B
