(A) Each lot in the subdivision shall be provided at the property line with a connection to a public sanitary sewer system. The termination or termini of the subdivision sewerage system shall be located at a point acceptable to the City Engineer. The construction of the sewer system shall conform to the approved plans and specifications and all work should be properly inspected and approved by the City Engineer. Trenches shall be backfilled per the requirements of this chapter.
(B) Where connection to a public sanitary sewer system is not feasible, subdivisions with lots greater than 40,000 square feet may be on a temporary septic system where standard seepage test or other investigations, conducted by the Madison or St. Clair County health officials or their representatives, indicated that the ground in the subdivision is suitable for individual sewage disposal facilities dependent upon seepage of the effluent into the soil. These temporary systems may remain until such time that a public sewerage system can take and treat the wastes. Nothing in this division (B) shall waive the requirement in division (A) above to construct the on-site collection system in anticipation of public sewers.
(C) Sewer systems and sewage treatment facilities shall meet the requirements set forth by the State Environmental Protection Agency, Department of Public Health of the state, applicable public sewer system and the city. No oxidation ponds, seepage lagoons or holding lagoons, will be permitted. Sanitary and storm sewer systems shall not be combined. “Package plants” or other private multi-user treatment facilities are prohibited with the one and one-half mile extraterritorial subdivision review jurisdiction area.
(D) Sewer mains with house service stubs to each lot shall be installed prior to the construction of street pavements. Service stubs shall be installed at the centerline of each lot and shall extend to within one foot of the front lot line. Sewer laterals may not share a common trench.
(E) Design of public sewers shall follow the Standard Specifications for Water and Sewer Main Construction in Illinois, the city’s standard specifications, and 35 Ill. Admin. Code subtitle C, chapter 2, part 370: Illinois Recommended Standards for Sewage Works.
(F) In subdivisions not required to install community sewage collection systems under this section, individual sewage disposal systems may be permitted.
(G) Regardless of locations, lot size or number of lots, a subdivision shall be disapproved where the city or Madison or St. Clair Counties’ Department of Public Health official finds that the drainage, soil conditions, disposal facilities or other conditions will tend to produce health problems.
(H) Sanitary sewers shall be extended through the end of all stub streets and capped. They shall also be extended in such other areas as necessary to facilitate future extensions for anticipated development.
(I) Sanitary sewers shall be noted on dedicated plan and profile sheets or on a utility plan. Plans shall also include details for manholes, laterals, trench excavation and any specialties. Profiles shall include grades and pipe size including manhole tops and inverts. Grading plan shall include finished floor and basement floor elevations to facilitate review of freeboard requirements. Where lift stations are included, these shall be detailed with all relevant piping, structures, pumps and site information.
(J) Lift station and force main calculations are required with sanitary sewer plans and shall be constructed in accordance with city’s standard specifications and the requirements of this Manual.
(K) Detailed calculations for gravity sewer design as well as copies of the IEPA permit applications shall be submitted for every development within the city limits or its one and one-half mile jurisdiction.
(Ord. 3319, passed 2-22-2005)