ASAP Sewer Line Rehabilitation—North Texas Municipal Water District, Wylie, TX
Rafael Ortega served as project principal for the rehabilitation of for the trenchless rehabilitation of 17,650 LF of 27” to 42” diameter sewer and included 50 manholes for North Texas Municipal Water District in an effort to extend the useful life of a concrete sewer interceptor installed in 1984. The project was complicated due to tree mitigation requirements of the City of Allen and Plano, limited site access to minimize impacts to existing parks, the requirements of sensitive property owners (established tree farm and two golf courses), and the extent of the floodplain.
FEMA Disaster Mitigation for Wastewater Facilities Induced by Hurricane Harvey—City of Houston, Houston, TX
A+ Services provided engineering services for consolidation and upgrades for flood mitigation efforts in the City of Houston’s North Belt and Cedar Bayou wastewater services areas. This project involved evaluations for diverting wastewater flows for consolidating and abandoning wastewater lift station facilities as part of the Hurricane Harvey disaster recovery and mitigation program. The focus was to mitigate or eliminate facilities located in flood-prone areas. Recommended improvements in the Cedar Bayou service area consisted of three replacement lift stations for on-site flood mitigation and elevating pump control panel and critical electrical equipment at one lift station. Recommended improvements in the North Belt service area consisted of a new 2.8 MGD lift station, 10,500 LF of 14-inch force main, and 1,320 LF of 12, 18 and 24-inch gravity sewers for diverting flows from the WCID #76 WWTP to the North Belt WWTP. Additionally, construction cost estimates were prepared for the recommended mitigation improvements totaling approximately $7.9M.
Lower East Bank Interceptor Sewer—Dallas Water Utilities, Dallas, TX
A+ Services is providing technical support as a sewer tunnel design consultant on a 1.5-mile, 96” and 84” interceptor sewer in downtown Dallas. The project involves the design and crossing of several major downtown arterial streets, channel under Trinity River, major storm box culverts and large horseshoe storm sewers, and sanitary sewer siphon and junction box structures before connecting to the diversion facility. Installation of proposed sewer will involve a combination of trenchless and open cut methods. As a design consultant to Gresham Smith and Partners, A+ Serviced has provided the development of geotechnical data and exploration program, constructability review on the preliminary design, evaluation and development of design alternatives, and review of project specifications. Final design is expected to be forthcoming.
Post Oak Construction Management—Uptown Development Authority, Houston, TX
A+ Services served as the Lead Construction Engineer for the Uptown Development Authority. In this role, the firm supported the Authority’s $150M construction program to reconstruct the infrastructure within the Galleria Area. The most notable project involved the reconstruction of over 9,000 LF of Post Oak Boulevard from Richmond Avenue to IH-610. As part of the project, the existing six lanes of traffic was shifted outwards to accommodate the placement of two dedicated bus lanes down the middle of the road. Construction required significant traffic control and phasing. Utility improvements included the construction of over 15,000 LF of 42” to 12” sanitary sewers and almost 18,000 LF of 12” water lines, including the relocation of numerous water meter vaults and multiple adjustments to an existing 24” water line. To facilitate construction of the main project and reduce the impact to the local retail/commercial and residential stakeholders, construction of some of the utility relocations started in advance of the main reconstruction work.