Section R. 299.2935 - Engineering reports; basis of design; minimum requirementsRule 35.
(1) Before submission of plans and specifications, an engineering report or basis of design, or both, shall be submitted to the department for review and approval.(2) An engineering report shall be required for all proposed projects dealing with construction of treatment facilities and major sewer systems. The engineer, when preparing the report, shall consider the material set forth under section 11, engineering report, of the recommended standards for sewage works, wherever applicable to the facility for which the report is being prepared.(3) A basis of design shall be required for all proposed projects and may be included in the engineering report. Basis of design forms for treatment facilities and pump stations are available from the division office. The basis of design for sewer systems shall include, depending on applicability to the sewer system for which the basis of design is being prepared, but not necessarily be limited to, the following: (a) A general map of the service area showing the location of the existing and proposed sewer system.(b) The service area in acres.(c) The present and future population densities per acre and total population.(d) The present and future per capita sewage contribution; average and maximum.(e) A description of commercial and industrial waste contributions.(f) The present and design flow rates, average and maximum.(g) The size of pipe, grade, and, where appropriate, the size of pump station, number and capacity of pumps, size and length of force main, and point of discharge.(h) An analysis of the effect of the proposed additional flows on the existing sewerage system.(i) A detailed explanation of steps to be taken in case of power failure or equipment breakdown, including a description of special reserve units available for emergency treatment, storage, or transportation of the wastewater.(j) An analysis and determination as to the applicability of sections 2 and 5 of Act No. 245 of the Public Acts of 1929, as amended, being §§323.2 and 323.5 of the Michigan Compiled Laws, and Part 13 of the General Rules of the water resources commission, being R 323.1311 to R 323.1329 of the Michigan Administrative Code.Mich. Admin. Code R. 299.2935