The client operates a coal-fired power plant in the Mid-Atlantic. The plant utilizes a series of low volume wastewater ponds (LVWWP) to manage the facility’s wastewater, including coal combustion residuals (CCR). The client must utilize the existing pond space to construct a new pond system that complies with the recently promulgated CCR rules. The engineering solution has to account for operational needs during construction, location standards and other compliance issues, and a groundwater monitoring system.
To date, TRC has provided comprehensive engineering and design services to develop a 60% bid package which will be used to select a contractor for the clean closure and reconstruction of the LVWWP, which will be reduced from 5 to 3 ponds. Engineering services provided to date include: geotechnical evaluations; wastewater evaluations, civil, geotechnical, electrical and mechanical designs, and permitting requirements. TRC also conducted pilot studies to evaluate various dewatering and treatment technologies, including hydraulic dredging via geotubes and conventional filter systems. Additionally, TRC evaluated present and forward-looking compliance/design issues, including location standards and structural integrity criteria. TRC also completed a comprehensive groundwater evaluation, including the development of a groundwater monitoring plan for CCR compliance. TRC will continue to provide engineering, compliance and construction support as other CCR deadlines approach, including closure/post closure plans, hydraulic capacity evaluations, groundwater sampling, assisting the client with the selection of a contractor, and providing construction oversight during field activities.
TRC’s in-house engineering and construction services group enabled the early-on rapid development of clean closure/reconstruction options and cost estimates to support the client’s financial needs. Additionally, TRC’s integrated engineering/construction team also produced the required bid documents in an expedited fashion, allowing the client to meet their bid schedule without going into another construction season.
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