Under wet-weather conditions, upstream modeled overflows and system surcharging occur in the Hatfield Wastewater Basin. The project included the design and construction of 12- to 36-inch trunk sewers and the elimination of seven lift stations. All flows were diverted to a deep, 42-inch trunk sewer.
The $5.9-million project also included the study of service areas to determine the feasibility of eliminating the seven lift stations, Phase I ESA and permitting. The project was located in an urban portion of the city, which required close coordination with the Pearland ISD for bus route alternatives, US Postal Service for continued mail delivery, traffic control for continued access to private property, as well as alternative backfill analysis to reduce the potential for pavement settlement. Soils in the Pearland area are known to be highly expansive with a high ground water table. The contractor was required to de-water the trench section prior to pipe installation, and a select backfill material was required underneath pavement sections.
City of Pearland
Construction Services, Environmental Science, Water/Wastewater Utilities