The Grady Rd. Landfill receives around 1200 tons of waste per day from various sources like restaurants, schools, and construction sites. The waste consists primarily of municipal solid waste (85%) along with some construction and demolition debris (10%) and special wastes (5%). At this landfill, the waste is not separated and is processed using equipment like evacuators, compactors, and bulldozers. The landfill structure involves filling the site in phases with double covers to prevent erosion and contamination of the surrounding area. Water monitoring of the leachate is conducted through groundwater wells and testing every 3 months.
1. What Happens at a Landfill?
Walker Visits Grady Rd. Landfill
02/21/08
2. 1. What types of waste are diverted
to this landfill?
• MSW (Municipal Solid Waste)-85%
• C&D (Construction and Demolition) -10%
• Special Waste-5% (ex: industrial car stuffing,
not MSW but not hazardous)
• NO HAZARDOUS MATERIAL
3. 2. What are the primary sources of
waste for this landfill
• Restaurants
• Schools
• Homes
• Construction sites
4. 3. How much waste do you receive on
a given day?
• Medium-sized land fill (60acres)
• 27,000,000 cubic ft. of airspace
• 180 tons from POLK, 1200 tons/day
5. 4. Is the waste separated in the
landfill?
• Not at Grady
• Some other landfills separate between
different types of waste from different sources
– MSW
– Construction
– Yard waste
6. 5. What are the different jobs and
equipment used to process the waste
at the landfill?
• Evacuators – clear out waste from dropping
site
• Compactors – increase space
• Bulldozers – transport waste
7. 6. What is the basic structure of this
landfill?
• Phase 1
– Double cover
• Phase 2
– Double cover
• No chemicals to promote composition needed
8. 7. What steps do you take to prevent erosion,
run-off from heavy rains, or the spreading of
pathogens, and the subsequent contamination
of the surrounding area?
• Use liners
• test the runoff for lichgate seeping through
9. 8. What water monitoring test do you
conduct on the lechate (biological oxygen
demand, pH, temperature, pressure,
moisture content, movement of fluids)?
• Groundwater wells
• consultants take samples to lab and test every
3 months
10. 9. Do you collect the methane and
recycle it for energy?
• Not yet
• 2012 – methane collection devices being
installed
