NR 216.07(3)(d)(d) Procedures to be followed to investigate portions of the municipal separate storm sewer system that, based on the results of field screening or other information, indicate a reasonable potential for containing illicit discharges or other sources of non-storm water. Procedures may include sampling for the parameters listed within par. (i), testing with fluorometric dyes or conducting inspections inside storm sewers where safety and other considerations allow. The department shall be given advanced notice of the time and location of dye testing within an MS4.

NR 216.07(3)(e)(e) Procedures to immediately investigate reports of illicit discharges to its MS4, including cooperation with the department, in order to locate and eliminate illicit discharges.

NR 216.07(3)(f)(f) Procedures for immediate notification of the department in accordance with ch. NR 706, of a spill or release of a hazardous substance, into or from an MS4.

NR 216.07(3)(g)(g) Procedures to prevent, contain and respond to spills that may enter the municipal separate storm sewer system.

NR 216.07(3)(h)(h) Appropriate measures to eliminate any leakage or discharge from sanitary conveyance systems into municipal separate storm sewer systems.

NR 216.07(3)(i)(i) A field screening analysis for illicit connections and illicit discharges at all major outfalls, plus any additional selected field-screening points designated by the municipality or the department. At a minimum, a screening analysis shall include a narrative description of visual observations made during dry weather periods. If any flow is observed, field analysis shall be conducted to determine the presence of illicit discharges. All field analysis shall include a narrative description of the color, odor, turbidity, the presence of an oil sheen or surface scum, and a description of the flow rate as well as any other relevant observations regarding the potential presence of non-storm water discharges. In addition, the field analysis shall include sampling for pH, total chlorine, total copper, total phenol and detergents unless the permittee obtains concurrence from the department to perform alternative sampling that is more effective to detect illicit discharges such as with ammonia, potassium or bacteria. The field screening points shall be established using the following:

NR 216.07(3)(i)2.2. Field screening points shall be located where practicable at the farthest manhole or other accessible location downstream in the system. Safety of personnel and accessibility of the location shall be considered in making this determination.

NR 216.07(3)(i)3.3. Consideration shall be given to hydrological conditions, total drainage area of the site, population density of the site, traffic density, age of the structures or buildings in the area, history of the area and land use types.

NR 216.07(4)(4) Construction site pollutant control. Except for construction sites that are exempted under s. NR 216.42 (2) to (11), a program to implement and maintain erosion and sediment control best management practices to reduce pollutants in storm water runoff from construction sites with one acre or more of land disturbance, and sites of less than one acre if they are part of a larger common plan of development or sale. This program shall encompass any adjacent developing areas that are planned to have a minimum density of 500 people per square mile, the urbanized area and developing areas whose runoff will connect to the MS4. The program shall include all of the following:

NR 216.07(4)(a)(a) The implementation and enforcement of a legal authority to comply with ss. NR 151.11 and 151.23, as well as sanctions to ensure compliance, to the extent authorized by law.

NR 216.07(4)(b)(b) Procedures for site planning which incorporate consideration of potential water quality impacts.

NR 216.07(4)(c)(c) Requirements for erosion and sediment control best management practices.

NR 216.07(4)(d)(d) Procedures for identifying priorities for inspecting sites and enforcing control measures which consider the nature of the construction activity, topography, the characteristics of soil and receiving water quality.

NR 216.07(4)(e)(e) Requirements for construction site operators to manage waste such as discarded building materials, concrete truck washout, chemicals, litter, and sanitary waste at the construction site so as to minimize adverse impacts to water quality.

NR 216.07(4)(f)(f) Procedures for receipt and consideration of information submitted by the public.

NR 216.07(5)(5) Post-construction site storm water management. A program to develop, implement and enforce controls on discharges from new development and redevelopment projects that disturb one acre or more of land, including projects less than one acre that are part of a larger common plan of development or sale, that discharge into the MS4. This program shall encompass any adjacent developing areas that are planned to have a minimum density of 500 people per square mile, the urbanized area and developing areas whose runoff will connect to the MS4. The program shall include all of the following:

NR 216.07(5)(a)(a) The implementation and enforcement of a legal authority to comply with ss. NR 151.12 to 151.128 and 151.24 to 151.249.

NR 216.07(5)(b)(b) Procedures for site planning which incorporate consideration of potential water quality impacts.

NR 216.07(5)(c)(c) Requirements for source area control and regional best management practices.

NR 216.07(5)(d)(d) Procedures for inspecting and enforcing maintenance of best management practices.

NR 216.07(6)(a)(a) A storm water management program and an operation and maintenance program that includes a training component and has the ultimate goal of preventing or reducing pollutant runoff and meeting the requirements of sub. (10). The program shall include all of the following activities: