City of Denton
- environmental
- Denton, Texas
Project Scope
Cell 3 – 18 acres
Cell 4 – 30 acres
Construction Type
New
Project Delivery Method
Design-Bid-Build
Project Components
Cell 3 (2018) - 0.6 million cubic yards of excavation, groundwater underdrain system, composite landfill liner consisting of a 2-feet compacted clay liner, 60-mil HDPE geomembrane, geocomposite drainage layer, with 2-feet protective cover soil, and a leachate collection system. A 12-ft by 70-ft 60-ton capacity pit type truck scale, reinforced concrete on-site access roadway.
Cell 4 (2021) – 0.5 million cubic yards of excavation, groundwater underdrain system, composite landfill liner consisting of a 2-feet compacted clay liner, 60-mil HDPE geomembrane, geocomposite drainage layer, with 2-feet protective cover soil, and a leachate collection system. A pre-RCRA Subtitle D waste separation liner consisting of a geocomposite gas venting layer, 40-mil LLDPE geomembrane, geocomposite drainage layer with 2-feet protective cover soil.
Parkhill was selected by the City of Denton to perform design, construction administration, and TCEQ liner conformance reporting for the construction of the Denton Solid Waste and Recycling Services Cell 3 and 4 projects. These projects allow the City of Denton to plan for the next 5 to 6 years of solid waste and recycling services.
Cell 3 included the construction of 18 acres of the lined cell. This cell construction consisted of approximately 0.6 million cubic yards of excavation, underdrain system installation, 65,500 cubic yards of compacted clay liner installation, 840,000 square feet of high-density polyethylene and geo-composite drainage layer installation, and leachate collection system installation. Construction was completed in May 2018, and the first waste was placed in June 2018.
Cell 4 is a 30-acre composite lined cell including a 4-acre Pre-Subtitle D separation liner. The liner system is comprised of a groundwater underdrain, compacted clay liner, 60-mil HDPE geomembrane, geocomposite drainage layer, with 2 feet of protective cover soil, and a leachate collection system. The separation liner consists of a geocomposite gas venting layer, a 40-mil LLDPE geomembrane, and a geocomposite drainage layer. Construction was completed in October 2021 and the first waste was placed in November 2021.
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