Showing posts with label soil cover. Show all posts
Showing posts with label soil cover. Show all posts

Tuesday, June 28, 2011

Landfill Litter Management

Here I'll summarize some basic techniques for managing, or controlling, litter at landfills.

1.   Develop a Litter Management Plan

Prepare a written plan that describes the litter management programs for your landfill.  This plan should outline bylaws or ordinances and how enforcement is done.  The plan should include policies and procedures for managing improperly contained waste loads.  It should include procedures for directing customers on-site and describe operating procedures for site litter controls.   With this plan, you should identify how you will monitor the effectiveness of the litter controls and you should include a practical response plan for litter clean-up. 

2.   Present a professional image.  

If you maintain a pleasing appearance at your landfill, you gain a greater degree of cooperation of your customers.  They will appreciate the effort to keep a site clean and are far more likely to take more care in how they transport their own loads are are far more likely to pay attention to site rules and site staff directions.  This can help your operation in more ways that just litter control, but it is an important piece of a litter management program.



3.   Cover

Cover includes cover of waste transporting vehicles and cover of waste disposed in the landfill.  Waste loads should be secured, tarped, or enclosed to prevent litter along roads leading to the landfill and along the landfill site roads.  This generally requires cooperation of legal enforcement agencies to be effective. 

Waste that is deposited at the landfill should be covered within practical reason to minimize exposure of the waste to wind. 

4.  Shelter to Prevent Wind-Blown Litter

An active working face that is sheltered from wind will minimize the amount of wind blown litter.   Shelter can be provided using natural wind breaks such as tree cover and sometimes topographical features.   Using portable wind-breaks placed on the upwind side of an active working face has also proven to be effective in reducing the speed of wind, thus reducing the amount of blowing litter. 




5.  Catch Litter

Most landfills use a variety of litter 'catch' fences to trap litter so that it doesn't escape the landfill.  This can include portable fences placed around the active working face,  temporary intermediate fencing placed through the landfill property, and perimeter fences at the site property lines.  




6.   Retrieve Litter

With effective litter control fences and operation procedures, there will be times when litter still escapes the active landfill area, or the landfill property.   The litter program MUST include a retrieval or clean up program in a timely way so that any fugitive litter does not collect for any unacceptable length of time.

Monday, June 27, 2011

Exposed to Wind

How much waste that is exposed to the wind can be directly related to the amount of wind blown litter you will have.  A large working face that is un-sheltered will certainly result in a high amount of wind blown litter.   Keeping an active working face as small as possible, or practical, is an important part of litter control.  In high wind conditions, it may be necessary to reduce the size of the exposed face, even if it means that inbound vehicles need to line up in a cue and await their turn. 


Sheltering the working face by taking advantage of surrounding topography may be effective in some circumstances and not so much in others.  More on this later when we discuss wind patterns and turbulence.   Using artificial wind breaks can provide some reduction in wind speed, and this will be discussed in a later post.   In this photo, this landfill is using a combination of fencing systems to provide shelter and to catch litter.  But most importantly, the working face is kept as small as possible to reduce the amount of waste exposed to the wind. 

Compacted Waste


Litter will be more easily wind blown when it is not compacted than if it is compacted.  Waste collection vehicles with compacted loads will have less litter wind blown as they unload than will the un-compacted loads.  Waste that is compacted on the working face is less likely to become wind blown than waste left in piles and exposed to the wind.    It should be remembered though that by pushing waste in windy conditions may actually add to the wind blown litter problem. 

It is important that the equipment operator understands that when spreading waste piles, the waste should be  pushed along the fill surface and not carried and dropped.  

Soil Cover

Covering the working face with soil will eliminate exposed waste and it cannot be pick up in the wind.    The equipment operator should advance the soil cover over the top bench of the daily cell to minimize exposure during the day.  Soil cover or an alternative cover is normally placed over the face at the end of a day's operation.  In some high wind conditions, the operator may need to apply a 'sprinkling' of soil cover over the working face during the day's operation to help control blowing litter.