This category includes individuals who use or supervise the use of metam-sodium to treat sewer lines.
Q. When may tree roots be considered a pest?
Q. Name several different types of pests.
Q. What is a pesticide?
Q. Distinguish between a General Use Pesticide and Restricted
Q. An applicator that applies or supervises the application
of a restricted use pesticide in any area for a fee is called:
Q. Name the two types of root systems associated with sewer problems.
Q. Name at least three factors around sewer pipes that influence
Q. Describe the two types of root structures found in sewer
Q. Name at least three different non-chemical root control methods.
Q. Name at least three chemical control methods other than metam-sodium.
Q. Explain differences between contact and systemic herbicides
and between selective and nonselective herbicides.
Q. Name several methods used to identify which lines have root
Q. What is a pesticide formulation?
Q. Describe the formulations used with metam-sodium root control
Q. Describe what happens to metam-sodium in the presence of
Q. How can hydrolysis of metam-sodium affect an applicator?
Q. Why is dichlobenil added to metam-sodium as a root control
Q. Explain the difference between the terms "Label" and "Labeling".
Q. Explain the differences between brand, chemical and common
Q. Name and explain the signal words and symbols you may see
on a pesticide label.
Q. What types of hazard statements should you look for on the
Q. Describe how a metam-sodium and dichlobenil root control
product is packaged and labeled.
Q. What are the three components of handling wastewater?
Q. What is the difference between a sanitary sewer and storm
Q. Name several variables in a wastewater collection system
that will influence root control operations.
Q. Describe the series of treatment processes removing waste
Q. What is the purpose of waste treatment ponds (lagoons)?
Q. What is the difference between design flow and actual flow?
Q. How can metam-sodium seriously affect the operation of a
Q. What is the applicator's main concern when treating building
service lateral lines?
Q. How may pesticide enter your body?
Q. Name the three ways pesticides can cause harmful effects.
Q. If pesticide is splashed into the eyes, what should you do?
Q. Why is it necessary to wear PPE?
Q. If you must work in a tight area treated with metam sodium,
where considerable gas is evolving, what is the best respiratory protection
Q. What is a closed handling system?
Q. What are good features to have in a pesticide storage room?
Q. What are the major steps for handling a pesticide spill?
Q. Briefly describe two types of foaming equipment.
Q. Name the foaming techniques used for applying metam-sodium root
Q. When filling a mix tank, how can you prevent back-siphoning?
Q. How can an applicator calculate the amount of chemical required
for a specific job?
Q. Why is it necessary for the certified applicator to communicate
with treatment plant personnel?
Q. How do you calibrate the hose retrieval rate?
Q. How can the applicator determine the effectiveness of root control