Site work for a water / sewer project in Mansfield, Texas. Conceptual plans call for site work for a water / sewer project.

The consultant selected for this project will be expected to submit an initial scope and fee estimate along with appropriate backup information. The scope and fee are expected to be submitted within the schedule shown in Section 4. PROJECT BACKFROUND FOR THE CEDAR CREEK SECTION 4 PIPELINE REPLACEMENT: Section 4 of the CC pipeline conveys all water from the Cedar Creek reservoir to the Ennis Booster Pump Station. This pipeline is one of two conveyance methods from the Cedar Creek Reservoir since the IPL JCC1 lake pump station came online. The CC pipeline is located within a 100’ wide ROW in the Trinity Bottoms area. The existing Section 4 pipe is 72-inch C301 PCCP pipe with operating pressures up to 225 psi in the Trinity River Bottoms area near the CC1 Lake PS. This section of pipeline was installed in 1971, with a galvanic cathodic protection system employing zinc anodes installed in the late 1990s. The pipes in this region have historically encountered joint end failures not able to be detected by electromagnetic condition assessment technologies in this flood prone area. These causes have frequently been due to delamination due to poor contractor handling/receipt of delivered pipe, increased likelihood of high-pressure class pre-stressed concrete cylinder pipe being more susceptible to delamination of the exterior concrete coating as the separation distance between pre-stressing wires is reduced, and/or exposure to multiple pressure transient events. Following delamination of the coating, metal loss of pre-stressing wire due to corrosion was occurring unabated until TRWD implemented galvanic cathodic protection in this area in the mid 1990’s. If a pipe break occurs in this area during a major flood event, it could result in an extended CC pipeline operations shutdown spanning several months until flood waters recede, only after which time repairs could be made and the pipeline cleared of mud and debris making this a critical area for rehabilitation. This section of pipeline has 50 out of 1901 pipes with known defects (2.63%) and 18 of those pipes are a repair priority 1 which means the pipe has the potential for failure based on risk analysis. With this 1970s vintage pipe approaching its end of useful life, the low probability of detection, high likelihood of failure, and the limited accessibility in the Trinity River Bottoms especially during extended, frequent flooding events make this section a high-risk portion of the pipeline. This project will require corrosion control engineering services for the new 8.6 miles of planned 90” mortar-lined, polyurethane coated welded steel pipe from ROW station 3458+08 just upstream of the Trinity River to ROW station 3911+61 just downstream of the CC Lake Pump Station. Construction of CC Section 4 work for the 8.6 miles of pipe replacement is expected to be one continuous construction contact. Construction is expected to begin in 2027. Consultant shall provide services for corrosion protection engineering design for the Cedar Creek Section 2 Pipeline Replacement Project, the Section 4 Pipeline Replacement Project, and the Section 1E/1D pipeline and Arlington Outlet improvements. Contract design drawings shall be completed in AUTOCAD Civil 3D. Pipeline cathodic protection locations will also be translated into ESRI GIS mapping. Summarize your entire submittal and add any other comments about your team that you feel would make your team uniquely qualified to perform the corrosion control engineering design for the Cedar Creek Section 2 replacement, the Cedar Creek Section 4 replacement, Section 1D and 1E, and the Arlington Outlet Improvements.