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By Brian Tippetts Liability or asset? Well-planned landfills are seen as community assets. The same, however, cannot be said of orphan and latchkey landfills. Orphan landfills , lacking a caretaker, become de facto wards of the government, languishing with minimal attention. Latchkey landfills have a caretaker, but one who takes only minimal legal care of the property. Orphan and latchkey alike, these landfills are unwanted—resented for their long-term care costs—while their potential values remain hidd...... continue reading
From: MSW Management Topics: Landfill, Materials, Special Wastes
By Larry Trojak Despite an impressive upturn in recycling rates nationwide in the last decade or so, it’s inevitable that landfills will continue to reach capacity, prompting closure, capping, and a move to alternate sites. Such was the case when the Rock Prairie Road Landfill near College Station, TX, a fixture to the area for more than 30 years, maxed out, shifting disposal to the newly constructed Twin Oaks Landfill. Operated by the Brazos Valley Solid Waste Management Agency (BVSWMA, pronounced buh-...... continue reading
From: MSW Management Topics: Environment, Landfill, Operations
By Don Talend Landfill grading, and cross-slope grading in general, poses a unique challenge for automated grade control technology: that of holding grade by accounting for cross-slope dozer blade angle. A New York contractor that was awarded the contract to cap a landfill on Long Island, NY, recently employed an automated grade control system that suits cross-slope grading and maximized dirtmoving efficiency on a site that represented anything but an ordinary cut-and-fill project. Capping the 28-acre L...... continue reading
From: MSW Management Topics: Landfill, Operations, Technology
By N.C Vasuki Closure of landfill cells involves the costly effort of capping to meet USEPA’s regulatory requirements. After closure, the landfill cell cap must be monitored and maintained for a minimum period of 30 years. The long-term maintenance costs include collection and treatment of leachate, as well as the collection and utilization of landfill gas for use as fuel or for flaring to meet the regulatory requirements. In addition, the landfill owner must also monitor the quality of the groundwater ...... continue reading
From: MSW Management Topics: Financial, Landfill, Materials
Written by Mark W. Cadwallader Alternative Daily Cover materials (ADCs) and earthen daily covers have different capabilities in this regard. Degradable plastic landfill cover, an ADC classified by ASTM D6523 as a “Non-Reusable Geosynthetic,” has been found to provide an effective continuous water runoff barrier, a property that also extends to air pollution and odor control. This study tests and compares the fluid barrier performance of daily cover materials. It reports the results of several simul...... continue reading
From: MSW Management Topics: Airspace, Compaction, Landfill
Written by Penelope B. Grenoble Southern California’s Puente Hills Landfill, one of the largest landfills in the country, will shut down operations on October 31, 2013, with 127 million tons of waste in place and 10-plus million tons short of its permitted capacity. The site has been in operation since 1957, first as a private dump, and since 1970 as a sanitary landfill owned and operated by the Sanitation Districts of Los Angeles County (LACSD). According to LACSD Division Engineer Robert Asgian, ...... continue reading
From: MSW Management Topics: Environment, Landfill, Maintenance
Written by Neal Bolton All landfills are similar; but then again, they aren’t. Some landfills are simply more efficient and more competitive than others. One important characteristic of a competitive landfill is the ability to use airspace effectively—important because it results in reduced operating costs, deferred capital costs, and a more competitive bottom line. Sure, there are variations in wastestream, site conditions, local weather patterns, and other important criteria, but after filtering throu...... continue reading
From: MSW Management Topics: Airspace, Landfill, Technology
Written by Aaron Kubichka Today, more and more landfill properties are being vegetated with native species, grasses in particular. The US Environmental Protection Agency (EPA) even promotes the use of native grasses at landfills. This makes sense because native grasses provide long-term cost savings, enhance habitat value, and are more sustainable than the traditional highway mixes. Native grasses are typically managed using prescribed burning techniques. Fire releases nutrients for grasses, ...... continue reading
From: MSW Management Topics: Environment, Landfill, Operations
Written by Neal Bolton Waste compaction is a cornerstone of landfill operations. A survey I once conducted indicated that waste compaction is one of the highest operational priorities for a landfill manager—No surprise there. But what is surprising is how limited—as an industry—our thinking is. Now to be sure, I’m not tossing every manager into this basket. There are many standouts—those who go far beyond simply putting a compactor in the budget…and then leaving it up to the crew to “compact the ga...... continue reading
From: MSW Management Topics: Compaction, Landfill, Wastes
Written by Neal Bolton It’s funny, you know, how much emphasis we put in to tracking our landfill’s airspace consumption rate—but how little understanding we have of the basic components that control it. When it comes to the technical side of the equation, we have surveyors, engineers, and financial folks who follow proven, accepted procedures for designing landfills, measuring airspace, and managing money. We come up with detailed reports on in-place density, effective density, airspace utilizatio...... continue reading
From: MSW Management Topics: Airspace, Compaction, Landfill
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