SBCC
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Under Drain SBCC was contracted by the Clark County Water Reclamation District (CCWRD) to prepare an engineering feasibility and predesign report for two critical facilities. First, the cross-town interceptor flowing into the headworks of the East Flamingo Water Resource Center is flowing full with surcharge conditions where the 84-inch Reinforced Concrete Pipe (RCP) line flows into a 69-inch RCP. Second, surge ponds within the wastewater treatment complex do not currently have a designated emergency overflow. SBCC evaluated the two areas of concern, developed solutions to correct the identified problems, and prepared a preliminary design report for moving the solutions forward. The provided work scope included the following task items:


Task 1: Surcharge Elimination

Central Plant 3Evaluate options to eliminate surcharge conditions and provide headspace within the 84-inch and 69-inch lines for airflow and improved hydraulics. SBCC completed Level D Subsurface Utility Engineering (SUE) services in support of the feasibility analysis of improvements to the cross town sewer interceptor. SBCC gathered as-built information on the existing utilities, and utilized the information in the subsequent analysis. SBCC evaluated and prepared a predesign report for a 115 million gallon per day (mgd) lift station (320 mgd peak) as an alternative (at locations both within the treatment Facility boundary and outside the Facility boundary), which included the following options:


Task 2: Emergency Overflow

Evaluated overflow conditions and prepared a preliminary design for emergency overflow while protecting a nearby electrical duct bank. SBCC produced a final report that evaluated the configuration options, identified design criteria, provided a planning level cost estimate, and included the following options: