N.Y. Comp. Codes R. & Regs. tit. 6 § 327.6

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

Section 327.6 - Authorized chemicals and specifications

(a) Copper sulfate for algae.

(1) Active ingredient. CuSO ₄[*]5H ₂O.

(2) Purpose. Authorized for algae control.

(3) Periods of treatment. Generally, May to September. Treatments later than Labor Day will require special authorization.

(4) Dosage. Not to exceed 0.3 ppm CuSO ₄[*]5H ₂O in the upper six feet of depth in ponds or lakes with over two acres of surface area. Not to exceed 0.3 ppm CuSO ₄[*]5H ₂O in the total volume of ponds with two acres or less of surface area. The above is based on water of average alkalinity for the State (100 ppm or over). In softer waters, a reduced dosage may be required.

(5) Method of application. No permit shall be issued for the direct broadcasting of crystals or "snow". Copper sulfate should be applied as a liquid using spray equipment or as a solid placed in a burlap bag dragged behind a boat.

(6) Repeat treatments. Shall not be authorized at any interval of less than two weeks.

(7) Water-use restrictions. Bathing and livestock watering shall be prohibited for at least 24 hours following a treatment.

(b) Diquat for submerged and emergent vegetation.

(1) Active ingredient. Diquat dibromide--6, 7-dihydrodipyrido (1, 2-a:2), (1- c)-pyrazidinium dibromide.

(2) Purpose. Authorized for the control of emergent plants having leafy growth lying flat on the water surface and for the control of aquatic plants growing beneath the water surface.

(3) Periods of treatment. Generally spring and late summer. Treatment after September 1 may require special authorization.

(4) Dosage. Maximum application is two gallons (35.3%A.I) per surface acre of water.

(5) Treatment area. Shall not extend beyond 200 feet from shore or beyond a maximum depth of six feet, whichever gives the greatest distance from shore.

(6) Repeat treatments. No permit shall be issued for a second treatment within the same season.

(7) Water-use restrictions. Treated waters shall not be used for irrigation, bathing, fishing, or by man or animals for drinking or food processing for a period of 14 days after treatment.

(c) Low-volatile esters, salts and amines of 2,4-D for emergent vegetation.

(1) Active ingredient. Calculated as 2,4-dichlorophenoxy acetic acid.

(2) Purpose. Authorized only for the control of emergent plants having a large part of their leafy growth projecting above or lying flat on the water surface.

(3) Periods of treatment. Restricted to late spring or early summer when the chemical is most effective.

(4) Dosage. Use of chemical solutions for dosage of up to eight pounds active ingredient per acre may be permitted in the treatment of dense stands. Use of pellets for subsurface application requires special authorization.

(5) Treatment area. Shall not extend beyond 200 feet from shore or beyond a maximum depth of six feet, whichever gives the greater distance from shore.

(6) Water use restrictions. Use of the waters for irrigation shall be prohibited for a period sufficient to permit the decay of the phytotoxicity. The treated waters and those waters affected by the treatment shall not be used for other purposes during the treatment and for at least 24 hours thereafter.

N.Y. Comp. Codes R. & Regs. Tit. 6 § 327.6