Case Study
40 West Landfill Cell 1, Hagerstown, MD
EFI installed two 60 mil textured HDPE liner layers, a geosynthetic clay liner, and protective geotextile for Cell 1 at 40 West Landfill in 2000.
Historical scope checked against the original EFI 40 West Landfill case history on September 23, 2026. Schedule statements describe the 2000 project. The source lists multiple material areas without assigning each area to a liner layer, so no combined area is reported here.
Historical record reviewed .
The Challenge
Problem
Washington County needed a new solid waste landfill after its existing facility reached capacity and could not expand. Following excavation by the general contractor, the first cell required the geosynthetic layers specified by SCS Engineers.
Our Approach
Solution
Environmental Fabrics, Inc. installed a secondary 60 mil textured HDPE liner over the prepared subgrade, a geosynthetic clay liner above it, and a primary 60 mil textured HDPE liner. A 16 oz. geotextile separated the primary liner from the drainage layer. The original EFI case history records installation starting in September 2000 and finishing ahead of schedule; the landfill began accepting waste in November.
Historical record
Documented Scope
Project Details
- Two layers of 60 mil textured HDPE geomembrane installed
- Geosynthetic clay liner between the primary and secondary HDPE layers
- 16 oz. protective geotextile above the primary liner
- Installation completed ahead of schedule, according to the 2000 case history
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