A. Installation To Comply With State Regulations: Sanitary sewers and water lines shall be installed in accordance with the plans and specifications prepared for the subdivider by a registered professional engineer and approved by the city. The construction of the sanitary sewers and water lines shall be in accordance with the "Standard Specifications For Water And Sewer Main Construction In Illinois", current edition, and any additions or revisions thereto from the effective date hereof, and no construction shall be initiated until the Illinois environmental protection agency has issued the applicable construction permits for the proposed improvements. (1996 Code § 26-110; amd. 2010 Code)
B. Lot Width And Area:
1. Lots which cannot reasonably be served by either a public sanitary sewer or a public water system shall have a minimum width of one hundred feet (100'), measured at the building line, and a minimum area of twenty thousand (20,000) square feet.
2. Lots that can reasonably be served by either a public water system or by a public sewer system, but not by both, shall have a minimum width of seventy five feet (75'), measured at the building line, and a minimum area of ten thousand (10,000) square feet. (1996 Code § 26-110)
3. In the case of unusual soil conditions or other physical factors which may impair the health and safety of the neighborhood in which a subdivision may be located, upon recommendation of the county department of public health, the city engineer may increase lot area requirements established in subsections B1 and B2 of this section as may be necessary.
C. Storm Sewer System:
1. A storm sewer system designed for the adequate removal of stormwater shall be provided by the subdivider. The extent to which storm sewer facilities shall be required shall be based upon an analysis of need prepared for the subdivider by a registered professional engineer. The analysis shall be based upon the rational method of computing stormwater runoff using the one hour rainfall to be expected at a twenty (20) year frequency. Times of concentration, soil infiltration rates, and other variable factors to be used in the analysis shall be discussed with and approved by the city during the preliminary consideration for the subdivision. The final design calculations shall be submitted with the roadway plans. (1996 Code § 26-110; amd. 2010 Code)
2. All storm drains and culverts shall be fifteen inches (15") or larger.
3. All storm sewer pipe material shall conform to the applicable sections of the standard specifications and shall be either reinforced concrete pipe meeting the requirements of AASHTO M170, or precoated galvanized corrugated steel pipe meeting the requirements of AASHTO M24-5 and M246, sheet coated with polymer coating thickness of 0.010 inch (0.25 mm) on both surfaces. All pipe shall be accompanied with the supplier's affidavit stating that the pipe is in conformance with said standard specifications. (1996 Code § 26-110)
4. Surface inlets installed in the curb and gutter shall be provided by the subdivider at spacings of a maximum of four hundred feet (400') with no inlet draining a total roadway length in excess of four hundred (400) linear feet. (1996 Code § 26-110; amd. 2010 Code)
5. A collection system to collect surface and subsurface water, including sump pump discharges, shall be provided by the developer, and installed prior to acceptance of the streets by the city. (2010 Code)
D. Time For Installation Of Lines: The water and sewer lines shall be laid to the property lines of each lot at the time of the installation of the main lines.
E. Water System:
1. The subdivider shall provide the subdivision with a source of water for domestic use by a complete water main supply system which shall be connected to the water facility system serving the city. (1996 Code § 26-110)
2. All water mains shall be a minimum of six inches (6") in size and shall be class 200 PVC meeting ASTM 1785-67 with bell ring joints meeting ASTM D1869, cement lined cast iron pipe with push- on or mechanical joints, or polyethylene pipe meeting ASTM requirements. (1996 Code § 26-110; amd. 2010 Code)
3. Fire hydrants meeting the current city specifications shall be installed at intervals not to exceed six hundred feet (600').
4. The proposed water supply system and materials must be approved by the city.
F. Plans And Profiles: The subdivider shall furnish the city with two (2) complete sets of plans and profiles as approved by the various authorities. (1996 Code § 26-110)