N.Y. Comp. Codes R. & Regs. tit. 6 § 646-4.18

Current through Register Vol. 46, No. 25, June 18, 2024

Section 646-4.18 - Stormwater management plan requirements for developed areas

(a) Pursuant to Environmental Conservation Law, section 43-0112(2) the commission shall prepare a study of the feasibility of reducing the impacts of stormwater runoff in areas where development has already occurred. The recommendations of such study shall be incorporated into stormwater management plans and stormwater regulatory programs. Municipalities nevertheless should identify, early in the planning process, geographic areas and land-based activities requiring attention to alleviate adverse stormwater related impacts upon water quality and erosion. Municipalities are also encouraged to begin to consider policies and methods to address such impacts prior to completion of the study.

(b) The plan may include in relation to such geographic areas and land-based activities:

(1) a description and location of major stormwater outfall points;

(2) an analysis of existing data on flows and pollutants discharged from major stormwater outfalls and an evaluation of the need to gather additional data in order to:

(i) establish baseline levels of elements and compounds being discharged at major stormwater out falls; and

(ii) rank major stormwater outfalls in order of the amount, levels and volume of stormwater and pollutant loads being discharged;

(3) specific objectives which can reasonably be expected to be undertaken by State and local government to reduce or prevent any increase in stormwater runoff and stormwater pollution from new development or redevelopment. In setting specific objectives, the plan shall evaluate the following:

(i) construction of new stormwater management facilities such as siltation traps, catch basins, and/or retention ponds, independently, or as part of any public road project or other development;

(ii) improved maintenance of existing stormwater management facilities;

(iii) targets for reduction in volume of road deicing sand and salts;

(iv) improvements in runoff controls at road sand and salt storage areas;

(v) reduction in the volume of fertilizers and pesticides applied to public and private lands;

(vi) action to improve spring cleanup of road sand and salt including identification of suitable disposal sites;

(vii) alteration of existing stormwater facilities to reduce the volume of stormwater mixed with surface water flows from the undeveloped upland thereby reducing the volume of polluted water to be controlled;

(viii) action to stabilize eroding areas such as road banks, stream crossing sites, sand and gravel mines; and

(ix) action to improve street sweeping, litter and lawn clipping and other housekeeping measures; and

(4) an identification of ponds and wetlands and areas of watercourses now receiving stormwater and an evaluation of their potential to absorb additional stormwater flows and pollutants without undue adverse impacts to the wetland or watercourse.

N.Y. Comp. Codes R. & Regs. Tit. 6 § 646-4.18

Amended New York State Register March 17, 2021/Volume XLIII, Issue 11, eff. 3/17/2021