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(A) All development and subdivision of land within the city and within the one and one-half mile area of extraterritorial subdivision jurisdiction shall conform to the standards adopted within this chapter, as well as the standards adopted herein by reference.
(B) The following standards are herein adopted by reference:
(1) Illinois Department of Transportation (IDOT) Standard Specification for Road and Bridge Construction;
(2) Standard Specifications for Water and Sewer Main Construction in Illinois;
(3) IDOT Drainage Manual;
(4) Illinois Urban Manual, dated December 2002 or more recent publication date. (The Illinois Urban Manual is a compilation and updating of the Standards and Specifications for Soil Erosion and Sediment Control (the Yellow Book) published by the Illinois Environmental Protection Agency; and
(5) Illinois Procedures and Standards for Urban Soil Erosion and Sedimentation Control (the Green Book) prepared by the Northeastern Illinois Soil Erosion and Sedimentation Control Steering Committee.
(C) In the event there exist conflicts among or between any of these adopted standards and/or the provisions of this chapter and Development Manual, the stricter standard shall prevail. Three copies of each of these
standards have been on file in the office of the City Clerk for a period of 15 days prior to the ordinance adopting this Manual and shall remain on file in the City Clerk’s office.
(D) The requirements set forth in this Development Manual shall be considered as minimum requirements and nothing contained herein shall be construed to mean that the subdivider cannot construct or provide improvements of a higher type.
(E) All proposed water and sanitary sewer facilities shall comply with the minimum requirements and recommendations of the Environmental Protection Agency of the state, the City Engineer and the City Council. When a proposed subdivision is reasonably accessible to a public sewer system and/or water distribution system, the subdivider shall provide the subdivision with a complete sanitary system and/or water distribution system to be connected to the proper public system(s). An analysis of the demand for water service and discharge into the sanitary sewer receiving system may be required by the City Engineer to determine if there are any significant system-wide impacts that may harm the city’s utility system or services.
(F) Upon the city’s review of any development and upon its determination, communicated to the applicant in writing, that a traffic safety or service level concern or any other such infrastructure service or public safety concern may reasonably exist relating to the construction or development to be permitted by the city, the city may subsequently require the applicant, at applicant’s cost, to submit a traffic study or such other study as may be needed to address the identified concern. The city may accept such studies as presented by the developer, however, the city may require additional studies to be prepared as necessary to ensure the standards herein are conformed to and that the public safety and welfare is protected. The city may, at its discretion, direct the conduct of such studies and may require such studies to be paid for by the developer/subdivider.
(G) Minimum testing standards: The following table sets minimum testing standards for infrastructure construction in development governed by Ch. 154 of this code.
MINIMUM TESTING STANDARDS INFRASTRUCTURE
The developer shall provide written test reports for all tests required herein. He or she shall also provide certification by the testing agency that the tests sections selected were representative of the item constructed in the field. The testing agency shall further certify that all tests were completed in accordance with the specified standards and according to the generally accepted standards of the industry.
Bituminous concrete pavement, BAM
Developer shall provide 4 density tests per mix per day for each lift, using the nuclear method (ASTM D2950).
Compact all bituminous concrete binder and surface courses to an average density of 93% of the theoretical density, with no individual tests less than 91%. Compact all BAM to a minimum of 90% of the theoretical density.
Developer shall provide representative ASTM D698 (Standard Proctor) tests for each type of material to be field tested for compaction.
Compact all fill within the building pad or within the proposed roadway to at least 95% of the maximum dry density in accordance with ASTM D698, in lifts not exceeding 8-inch loose thickness.
Developer shall provide 1 compaction test per 1,000 s.y. of surface area for each lift, using the nuclear method (ASTM D2922 and D3017).
Portland cement concrete curbs
Developer provides the following tests: slump (ASTM C143); air entrainment (ASTM C231); compressive strength (ASTM C39 and C31). Concrete shall be Class S1 per IDOT standard specifications Art. 606 and 1020. Minimum concrete compressive strength shall be 3,500 psi at the age of 14 days.
Air entrainment and slump: once each per day min. and once per 50 c.y. concrete. Compressive Strength: Cast 3 6-inch dia. x 12-inch cylindrical test specimens per day min. or 3 per each 50 c.y. of concrete each day. Cast all 3 specimens from a single batch of concrete. Test the first concrete specimen at the age of 7 days. Test the second concrete specimen at the age of 14 days. Test the third concrete specimen in the event the 14-day test does not indicate compliance with specified strength requirements or as directed by the City Engineer. 6.4 bag mix is required.
Portland cement concrete pavement
Developer provides the following tests: slump (ASTM C143); air entrainment (ASTM C231); compressive strength (ASTM C39 and C31). Concrete shall be Class S1 per IDOT standard specifications §§ 420 and 1020. Minimum concrete compressive strength shall be 3,500 psi at the age of 14 days.
Air entrainment and slump: once each per day min. and once per 50 c.y. concrete. Compressive Strength: Cast 3 6-inch dia. x 12-inch cylindrical test specimens per day min. or 3 per each 50 c.y. of concrete each day. Test concrete specimens as prescribed for PCC Curbs. 6.4 bag mix is required.
Developer shall provide the following tests upon completion of construction: exfiltration of air under pressure; deflection of thermoplastic piping; manhole vacuum test; and lamping. Areas not passing tests shall be corrected and retested. City Engineer may increase required frequency of tests if initial tests fail minimum requirements.
Frequency and technique per the Standard Specifications for Water and Sewer Main Construction in Illinois, Art. 31-1.11, utilizing methods C, D and E.
(Ord. 3319, passed 2-22-2005)