Specifications include, but are not limited to: Contract 210 Part D - Furnishing and installing approximately 5,315 LF of 54-inch Gravity Sewer and appurtenances from the doghouse MH connection with the existing BCUA 72-inch Gravity Sewer in Bell Drive to and including the final connection just downstream of the Force Main Discharge Chamber on Railroad Avenue installed under Contract Part C, all in Ridgefield, from Station 117+03 to Station 170+18. Includes installation of approximately 415 LF of 54-inch Gravity Sewer in a 78-inch Steel Casing by Jacking, with the remainder installed by open cut. Includes demolition and/or abandoning of existing gravity sanitary sewers as shown and specified and the installation of new chambers, manholes and appurtenances. Includes one new meter chamber. Includes removal and replacement of existing storm and sanitary sewers in Church Street. Includes maintenance of sanitary sewer flow including by-pass operations as required to make all necessary connections to the existing sanitary sewer systems and maintain flow in existing facilities to be removed, replaced, or disturbed by the work. The Work consists of furnishing all equipment, superintendence, labor, skill, material and all other items necessary for the construction including but not limited to the following where applicable to each Contract: A. Clear work areas. B. Maintenance and protection of traffic. C. Install and maintain soil erosion control measures. D. Perform test pits. E. Earthwork, including excavation, backfill, compaction, importing, removal, and grading. F. Concrete work. G. Maintain sewer flow at all times of construction. H. Install and operate dewatering equipment. I. Install dual 24î SDR9 DIPS HDPE pipes utilizing directional drilling and/or open cut methods. J. Construct air/vacuum release valve chamber(s).