N.Y. Comp. Codes R. & Regs. tit. 6 § 328.6

Current through Register Vol. 46, No. 45, November 2, 2024

Section 328.6 - Authorized chemicals and specifications

Rotenote for extermination of undesirable fish. (Removal of entire fish populations.)

(a) Purpose. Authorized for extermination of entire fish complexes where reasonable as a basis for sound fisheries management. Not authorized for partial treatments or elimination of a single species from the population.

(b) Periods of treatment. In waters with outlets, or possible outlets at high water, treatment will be authorized from July to mid-September. Waters without outlets may be treated up to October 15. Later treatment will require special authorization.

(c) Dosage. Not to exceed 0.5 to 1.0 ppm rotenone and vehicle of five percent by weight emulsifiable rotenone, or two and one-half percent synergized emulsifiable rotenone. The high dosage should be considered only for waters which are weedy, turbid or of high alkalinity.

Note:The issuing agent should check the volume and dosage and for this purpose insist that an adequately sized scale map complete with soundings be provided by the applicant.

(d) Treatment area. Entire lakes and ponds shall be treated, including any tributary system. Permits will not be issued for streams or parts of streams unless within such tributary system.

(e) Method of application. Diluted solution shall be sprayed for effective coverage and to avoid uneven distribution. Shallow waters and ponds up to five acres and tributaries should be treated by hand pumps. Larger waters and those over 15 feet in depth should be treated with pressure or centrifugal pumps. The suction side may be used to draw and mix water and chemical before they are sprayed on the surface. A proportionate amount should be distributed to the deeper water by dragging a weighted discharge hose. Tributaries are to be treated for several days after the pond treatment.

(f) Posting of treated area. If the applicant is unable or does not desire to control access and use of the area, he shall post it to indicate the treatment given.

(g) Water-use restrictions. While rotenone at the recommended concentration is not harmful to man or animals after distribution, less is known of the effect of vehicle and additives. Due to the possibility of high localized and surface concentrations:

(1) Watering animals shall be restricted for two weeks following treatment.

(2) Swimming shall be restricted until the water has become non-toxic to fish or for not less than two weeks if the toxicity is dissipated sooner.

(3) Use as a private water supply shall be restricted for the same time and same reasons as swimming. Treatment of a public water supply must be authorized by the supply agency. In this case, restriction shall be left to the supply agency.

N.Y. Comp. Codes R. & Regs. Tit. 6 § 328.6