Owner/Client
Homer City Generation, L.P.
Location
Homer City, PA
CEC Services
- Site Selection and Characterization
- Site Grading/Earthwork Analysis
- Geotechnical Engineering
- Stormwater Management/BMP Design
- Aquatic & Terrestrial Habitat Surveys
- Wetlands & Waters Delineations
- Clean Water Act, Section 401/404 Permitting
- Threatened & Endangered Species Surveys/Wildlife Surveys
- Hydrogeologic Site Investigations
- Groundwater Monitoring and Assessment
- NPDES Permitting Support
- CCR and Industrial Waste Management
- Landfill Design and Permitting
- Leachate Management and Treatment
- Waste Characterization
- Stormwater BMP Design and Inspections
Owner Objective
Homer City Generation, L.P. (HCG) owns and operates three coal-fired electric generating units and related facilities. The coal-fired electric generating units have a capacity of approximately 1,800 megawatts, of which it sells energy, capacity and ancillary services to power marketers and load-serving entities in 14 states. HCG was looking to expand its coal ash landfill, which was nearing permitted capacity, by 10 million cubic yards.
CEC Approach
CEC ecological, hydrogeologic and engineering professionals worked with HCG to design a landfill expansion that would minimize stream/wetland impacts and maximize the available airspace while maintaining a design what was constructible and feasible. CEC used an innovative approach to evaluate potential secondary impacts to streams/wetlands as a result of the landfill expansion including extensive surface water and infiltration modeling, locating sediment basins near streams and using infiltration galleries. CEC conducted a hydrogeologic investigation and prepared a site characterization report and groundwater monitoring system, as well as prepared a 401/404 permit application for impacts to streams and wetlands.
The Pennsylvania Department of Environmental Protection (PADEP) has approved the surface water/infiltration modeling and the hydrogeologic site characterization and has issued the 401/404 permits. The detailed engineering design is currently under review by PADEP.
