Subregional operating group: salt river outfall interceptor rehabilitation
Project Owner: City of Phoenix
Project Type: Construction Manager at Risk
Construction Dates: 06/17 to 03/18
ON AIRPORT MANHOLE & PIPELINE REHABILITATION SCOPE OF WORK
This scope of work included the rehabilitation of active polyvinyl chloride (PVC)-lined reinforced concrete sanitary sewer pipeline and manholes within the property serviced by Phoenix Sky Harbor International Airport. This scope of work included the assessment and rehabilitation of 24 manholes and approximately 14,000 feet of pipeline, and the installation of 19 new manhole top plates to repair the deteriorated existing frame and covers.
To support the scope of work outlined above the setup, operation and demobilization of an approximately 17,000-feet, 60 million gallons-per-day sanitary sewer bypass pumping operation was required.
This scope of work entailed two suction pits that were installed just south of the East Economy Parking Lot with the discharge piping following the Salt River and Old Tower Road, and then crossing 24th Street to two discharge manholes in the South Mohave Parking Lot. This scope of work included installation of three 10-foot diameter manholes and the modification of one 5-foot diameter manhole, placement of temporary piping required to meet the flow demand, and various bypass piping roadway crossings, which includes 24th Street, Old Tower Road, the East Economy Parking Lot, and the Southwest Airlines Parking Lot.
OFF AIRPORT MANHOLE REHABILITATION SCOPE OF WORK
This scope of work included the rehabilitation of 32 active sanitary sewer manholes which were located outside the property of Phoenix Sky Harbor International Airport. This scope of work included installation of coating systems and structural repairs in all parts of the existing manholes as indicated in the contract documents. The majority of the work consisted of repairs of existing defective corrosion coatings, and there were 11 manholes recommended for structural rehabilitation with a structural insert.