Specifications include, but are not limited to: constructing Water Distribution System to serve Turkey Creek 4th Addition-Phase III tied with Sanitary Sewer System to serve Turkey Creek 4th Addition-Phase III ; All sanitary sewers constructed, regardless of size or pipe type, will be air tested by the contractor, per the specifications in this section. If a bid item is not included for testing, all costs associated with air testing shall be considered SUBSIDIARY to other items of work. Water and sanitary sewer pipe shall not be installed by boring and jacking methods directly unless approved by the engineer. All carrier pipes within casing shall be approved restrained joint pipe that shall extend a minimum of three feet (3’) past each end of the casing. Steel casing shall be installed by boring and jacking methods where specified by the plans. Pipe will not be allowed to be bored and jacked directly.