Tenaska, Inc.
Shiro, Texas
CES provided an evaluation for land application design. This included a complete soils characterization to determine the potential issues the land application site might present both to equipment and management.

CES also developed a crop management plan for the Texas Natural Resource Conservation Commission (TNRCC) as part of the permit requirements. This site was also thoroughly investigated to establish the baseline soil fertility. As this work was being completed, the preliminary design and engineering costs estimates were developed for the pump station, pipeline, electrical distribution, land application system and controls. CES was retained to manage the establishment of the Bermuda grass to meet the cropping requirements of the site. The site became operational in 2000.

As part of the project, CES:

• Adapted site with poor physical soil properties to manage blow-down water.
• Developed cropping plan to treat high salinity water from generator cooling towers.
• Received praise from the Texas regulator agency, the TNRCC, for high quality site characterization study and management plans.
• Provided fast track turn-key construction that maintained the generator startup schedule; eight months, start to finish.
• Provides operational services.
• Provides on-going monitoring and reporting services.

Tenaska Features

• Phase I: Land application 5 pivots, Phase II: 7 pivots and solid set
• Pump station
• Land application to 193 acres

Portland General Electric Company
Portland, Oregon
The Portland General Electric Company (PGE) selected the Port of Morrow industrial park, located near Boardman, Oregon, as the site for the construction of the Coyote Springs co-generation power plant. Between 1994 and 1996, CES assisted PGE and Port of Morrow in obtaining permit modifications for the Port's 3,000 acre land application system to accept the process water from the proposed facility (boiler water and cooling tower water). This work included blended process water characterization, predicted effects of application to land and groundwater, a statement of knowledge describing existing and proposed process water discharges, as well as a work plan for the revised re-use system.

CES also conducted an updated soil and hydrogeologic characterization as it related to acceptance of the PGE process water. CES was able to demonstrate to the Oregon Department of Environmental Quality (DEQ) that the addition of the process water would not have detrimental effects on the Portland application program. Permit modifications were issued by the DEQ and the facility was constructed and began operation in 1997.

Hermiston Generating
Hermiston, Oregon
CES was retained to complete design plans and water discharge permitting for a process water land application system to reuse all cooling tower blow-down water. The project involved the assessment and economic analysis of potential land application sites, the design of a five-mile process water pipeline, pump stations, integration with existing irrigation system components, regulatory permitting and operational management and monitoring plans. The project became operational in 2001.