All construction shall be in accordance with the current Standard Specifications for Water and Sewer Main Construction in Illinois and the Environmental Protection Agency of the state, except as follows:
A. All lines shall be capable of transmitting direct light between manholes;
B. Infiltration shall not exceed two hundred gallons per day per inch diameter per mile, this test procedure is to be used only for sewers located below the water table, otherwise exfiltration or air tests shall be conducted;
C. Exact location of all service wye connections shall be shown on the as built drawings, as measured from the nearest downstream manhole; stakes shall be placed according to Standard Drawing No. 6, located at the end of this title;
D. Unstable trench bottom material shall be removed and replaced with stone or gravel.
(Ord. 81-10 § 11.1 (C), 1980).