Specifications include, but are not limited to: 2019 Sanitary Sewer Rehabilitation Phase B (CIPP) (north of Harry, east of Hydraulic (various locations). The 18” pipe is corrugated metal with what may be a tar based coating. The Contractor shall design their liner for fully deteriorated pipe and groundwater. The minimum liner thickness used shall be 13.5 mm. If the active groundwater leaking into the sanitary sewer line requires dewatering or other measures to prevent it from interfering with curing of the CIPP, that extra cost shall be subsidiary to the bid item for CIPP liner installation. According to well drilling records, the groundwater in this area has ranged between 16 feet to 34 feet below the ground. Extra cleaning will be required due to sand infiltration and that cost shall be subsidiary to the bid item for CIPP liner installation.