Section NR 108.05 - Design requirements(1) Final plans and specifications shall incorporate accepted engineering practices. If new or innovative equipment or methods are proposed in the plans, sufficient data, based upon practical application, experimental or otherwise, shall be submitted to show that satisfactory results can be secured.(2) Waterworks, exclusive of the distribution system, shall be designed to provide for the estimated requirements based on a projected 20-year growth. Water distribution systems shall be designed for the estimated ultimate tributary population. These requirements may be modified by the department where it can be shown that a shorter design period is more cost-effective, more environmentally sound or that additional distribution system capacity will be provided in a future phase of construction.(3) Sewage treatment facilities shall be designed to provide capacity for estimated future flows in accordance with s. NR 110.09(2) (j). Interceptors shall be designed to provide capacity for estimated future flows in accordance with s. NR 110.10(2). Collector sewers shall be designed for the estimated ultimate flow.Wis. Admin. Code Department of Natural Resources NR 108.05
Cr. Register, November, 1974, No. 227, eff. 12-1-74; r. and recr. (2) and cr. (3), Register, December, 1978, No. 276, eff. 1-1-79.