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Sample questions
According to the product label, what is the maximum concentration of metallic copper allowed in a single treatment for aquatic weeds?
- 0.4 ppm
- 1.0 ppm
- 9.1 ppm
- 14.9 ppm
Show answer
Do not exceed 1.0 ppm metallic copper in any single treatment for aquatic weeds.🔗 Source
In waters destined for drinking water, what additional requirement must be met?
- The water must be treated with a higher concentration of copper
- The application must be done via aerial spray only
- The water must receive additional and separate potable water treatment
- The water must be tested for fish toxicity first
Show answer
In waters destined for drinking water, must receive additional and separate potable water treatment.🔗 Source
Which of the following is a listed application method for Nautique?
- Direct surface spray, subsurface through weighted hoses, aerial application, or metering/injecting into flowing water
- Only direct surface spray in stagnant water
- Subsurface injection only in deep lakes
- Hand-spraying individual plants
Show answer
Application methods include direct surface spray, subsurface through weighted hoses, aerial application, or metering/injecting into flowing water.🔗 Source
When treating aquaculture ponds where fish are present, what is the maximum allowable concentration of metallic copper per treatment?
- 1.0 ppm
- 0.4 ppm
- 9.1 ppm
- 13.2 ppm
Show answer
Do not exceed 0.4 ppm when treating aquaculture ponds with fish present.🔗 Source
What PPE is required for an applicator according to the label instructions?
- Nitrile or butyl rubber gloves, protective eyewear, and coveralls over long-sleeved shirt and long pants
- Latex gloves, safety glasses, and short-sleeved shirts
- Chemical-resistant gloves, face shield, and shorts
- Nitrile gloves, sunglasses, and long pants only
Show answer
Applicators must wear coveralls (Tyvek suit or similar) over long-sleeved shirt and long pants; socks and chemical resistant footwear; chemical-resistant gloves (nitrile or butyl rubber); and protective eyewear (goggles, safety glasses, or face shield).🔗 Source
When applying Nautique to flowing water, how should the applicator determine the necessary drip rate (ml/min) to maintain the desired ppm?
- By measuring the water depth
- By measuring the plant density
- By using Table 2 based on the flow rate (cfs)
- By calculating the total volume of the water body
Show answer
For flowing water, use Table 2 to determine drip rate (ml/min) based on flow rate (cfs) to maintain desired ppm.🔗 Source
What is the total metallic copper equivalent contained in Nautique?
Show answer
It contains Copper Ethylenediamine Complex (13.2%) and Copper Triethanolamine Complex (14.9%), providing a total metallic copper equivalent of 9.1%.🔗 Source
If a user intends to treat waters containing rapidly reproducing toxic algae that pose a public health threat, what is required if they wish to apply copper at intervals shorter than 14 days?
- A permit from the EPA
- Authorization from applicable state, local or tribal water resources authorities
- The use of a higher concentration of copper
- No additional authorization is required if the algae is toxic
Show answer
In situations where rapidly reproducing toxic algal species pose a public health threat, must receive authorization from applicable state, local or tribal water resources authorities before applying copper at intervals shorter than 14 days.🔗 Source
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