Existing Public Water and Wastewater Large Transmission Mains Water
The water infrastructure in the 56th Street Redevelopment Area is owned and managed by the City of Tampa. The study area has one major water main: 42” water main running east on E Hanna Avenue, turning south on N 56th Street, and continuing east on E Hillsborough Avenue. According to City of Tampa GIS records, this transmission main is ductile iron and was installed in 1989. Since ductile iron pipe has a service life expectancy of 50 or more years so this main should have a fair amount of remaining useful life. Figure 16 is a map of the existing water distribution infrastructure in this area. Wastewater Several wastewater force mains owned by the City of Tampa run along the boundaries of the redevelopment area ranging from 12-inch to 4-inch. A 12-inch cast iron force main runs along E Sligh Avenue on the north edge of the redevelopment area. Cast iron force main stopped production/ installation in the 1980’s and was replaced with ductile iron pipe/PVC pipe. It is expected the 12-inch cast iron force main is nearing the end of its useful life and needs to be replaced. A 12-inch PVC force main runs along Orient Road on the east edge of the redevelopment area, and a 12-inch force main of ductile iron and PVC runs along E Hillsborough Avenue on the south edge of the redevelopment area. The installation dates of the force mains are unknown however, a few observations can be made. The 12-inch force main composed of ductile iron and PVC may have issues with H2S gas corrosion, which is why this force main could be pieced together with both PVC and ductile iron. Ductile iron and PVC force mains have an expected useful life of 50 to 60 years and are assumed to be in fair condition. Only a few gravity mains are located in the redevelopment area, which is mainly comprised of small lift stations and force mains. The only Lift Station owned by the City of Tampa is located on the eastern portion of the area and feeds into the force main along Orient Road. Figure 17 is a map of the existing wastewater infrastructure in this area. Septic Tanks The study area has a mix of sewer and septic systems to treat the wastewater. Existing County data lists a total of 61 tanks, most of them located in the western portion of the redevelopment area. Locations of the septic tanks are shown on the wastewater infrastructure map (Figure 17 ) . Based on the existing available data provided by the County there are no current plans to convert septic to sewer in this study area. The 2018 Hazen and Sawyer Hillsborough County Septic Tank Conversion - Neighborhood Prioritization Report, identifies areas that should be prioritized for septic to sewer conversion. In this report, parcels that already had wastewater service were removed from the study and only parcels that were single family residential were labeled as a priority for conversion. Therefore, the 56th Street Redevelopment Area was not prioritized for conversion and it is unknown at this time if there are plans for future septic to sewer conversion. One location with existing single family residential and septic at Orient Road and Zeimis Drive may be a candidate for septic to sewer conversion.
40 56th Street Redevelopment Area Infrastructure Assessment Hillsborough County
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