Seymour Landfill Operator Applauded for Applying for Permission to Put Slopes on Plateau

The top of every landfill should be rounded, and certainly never a flat plateau, and if your landfill has a flat plateau you should go right now to the regulators and the planners and ask for more capacity to be allowed to ask for a rounded contour with surface slopes initially at no shallower than 1 in 20, whcih after settlement will end up probably at only 1 in 20 which is only just enough to stop sighnificant ponding. In essence you need the surface water from a landfill cap to flo off it quickly. UK research in the 1990s showed this need for a good shedding slope to the top of a landfill to reduce leachate production, to be a big factor in all cases studied.




Here is an extract from the original article:

TRENT HILLS -- The key to a landfill achieving its full potential is that it be well-rounded. Northumberland County will be making that argument when it applies to the Ministry of the Environment to increase the capacity of the Seymour landfill by 39,000 cubic metres so the mound atop the waste disposal site will be rounded.

The landfill's approved final contours is for a plateau on top which will lead to increased infiltration of precipitation into the landfill and cause "higher than necessary leachate generation rates," manager of planning and technical support Adam McCue said in a report to County council April 18.

If the ministry agrees to the request for additional waste material and cover soil, Seymour Landfill's operating life would be extended by up to two years, he said.

With its capacity currently valued at $95 per tonne, the landfill would produce an additional $1.85 million in revenue during that time, he added.

Mo Pannu, director of transportation and waste management, said the site's capacity is expected to run out by the end of this year or early in 2013.

He said it will take four to five months for the application to be processed.

The application to the ministry will cost $22,700. The County also approved an expenditure of $42,500 to develop detailed design, operations and closure plan in support of the request. Both expenses will be funded from savings in this year's transportation and waste management department budgets.

View the original article here