Solid Waste Engineering |
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Cross-section of a landfill.
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The solid waste engineering team at Daniel B. Stephens & Associates, Inc. (DBS&A) has successfully completed projects involving all of the design and construction oversight activities required for the most complex landfill projects. We maintain a superior record of meeting the cost, quality, and schedule expectations of landfill clients in both the public and private sectors. As a result, DBS&A is the firm of choice for many landfill operators in the western U.S., including municipalities, counties, private operators, the Department of Energy, and the Department of Defense.
DBS&A is a national leader in the design of alternative landfill covers for arid regions. An alternative landfill final cover offers the opportunity to save millions of dollars and provides improved cover performance for erosion control and long-term maintenance. DBS&A has gained regulatory approval for and has demonstrated the successful performance of this cost-saving design at several sites, resulting in recent widespread acceptance. We also offer in-house capabilities in computer-aided drafting (CAD) for efficient production of engineering design drawings and geotechnical soil testing by DBS&A's Hydrologic Testing Laboratory. In addition, DBS&A has developed the equipment and test methodology for the air-entry permeameter (AEP), a highly efficient and less costly soil test that replaces standard test methods. |
Solid Waste Engineering Services |
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- Landfill Design and Construction
- Facility siting studies
- Design of landfill cells and hydraulic structures
- Liner and cover design and installation
- Alternative cover design and performance demonstrations
- Landfill gas collection systems
- Leachate management system evaluation
- Erosion protection
- Slope stability analysis
- Public hearings/public involvement
- Construction management
- QA/QC testing and inspection
- Soils testing
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- Landfill Site Investigations
- Soil and water sampling and monitoring
- Soil/groundwater remediation systems
- Vadose zone monitoring systems
- Stormwater management evaluation
- Landfill gas monitoring (Tier 1, 2, and 3)
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- Operational Services
- Support and evaluation of landfill operations
- Long-range planning and budgeting
- Cost assessments/rate studies
- Operation plans
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- Regulatory Compliance
- Landfill permitting
- Expansion plans
- Air quality permitting
- Regulatory agency negotiations
- Closure plans
- Solid waste management plans
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