Specifications include, but are not limited to: Manhole Adjustment 1. Manhole adjustments greater than 12” of concrete rings must be accomplished by removing existing Cone Section or flat top with a taller cone section. ; Valve Box and Main Line Cleanout Adjustment 1. Casting adjustments greater than 2” of concrete rings must be accomplished by changing the riser section to a taller section. 2. Paving rings are not permitted during initial casting installation. ; perform all Work necessary for the construction of water distribution systems less than or equal to 36- inch in diameter. All pipe greater than 12 -inch diameter shall be zinc coated ductile iron ; After Final flushing and before the water main is placed in service, the Contractor shall collect samples and have the samples tested for bacteriological and aesthetic quality (Parameters to include disinfectant residual, total coliform bacteria, standard heterotrophic plate count test, turbidity, pH, alkalinity, total chlorine, odor and specific conductance).