Will Posi-Shell Damage my Leachate Collection System?

NO - Posi-Shell has been used at conventional and bioreactor landfills for 20 years with no documentation of damage to leachate collection systems. The cement ingredients in Posi-Shell harden on the surface of the waste at the time of application. This one-time hydraulic cement reaction occurs only when the cover is first applied. If the hardened material later breaks up and is transported by liquids to the leachate system, it behaves the same as any other dirt, dust or other solid particles in the leachate. Soil covers contribute far more available solids than thin Posi-Shell coatings, and C&D landfills with a large amount of old cement materials do not report any greater incidence of leachate line clogging than MSW landfills.

It is true that leachate collection piping often exhibits a scaly hard build-up known in the landfill industry as “Bio-Rock,” however, this occurs in landfills not using Posi-Shell as frequently as in those which do. Bio-Rock is generally formed by complex biochemical oxidation-reduction reactions with leachate solids slowly flowing through the intermittent semi-aerobic conditions in the leachate collection pipes. This explains pipe camera observations that there are no “stalagtites” forming downward from the perforation holes; instead the Bio-Rock builds in thin, hard layers from the bottom up, beginning at the leachate flow-line in the pipe.

You can use Posi-Shell with complete confidence, based upon decades of experience, that no damage will be done to your leachate collection system. The important key to a well functioning leachate collection system is regular, normal cleaning of collection lines to remove “Bio-Rock” before it clogs the line; this maintenance is equally important for landfills using Posi-Shell or for landfills using any other type of cover.

Some of the winners

Here are a couple of the winners at our InfoEx conference, Shawn Peckham and Mike Torrecillas - congratulations guys.

InfoEx 2009

Waste Expo and InfoEx 2009 in Las Vegas are history now, but those who attended certainly enjoyed great opportunities to learn and to win. At InfoEx the speakers from across the country provided great insight into the savings they are enjoying using Posi-Shell. Guests with a wide range of needs and questions got answers and a chance to see the product applied in person.

Our door prize winners will certainly enjoy their Wii entertainment system, GPS, digital camera and digital frame.

If you missed out this year - there's always next year, and your chance to win. But if you are using ANY other daily cover - don't wait till next year. We can start saving you money now.

Do you believe?

We're out to prove that at whatever given quality level you prefer, Posi-Shell is the least expensive ADC available in North America. Our sales staff are equipped with product and equipment to go to any site and prove that claim to be true.



We have the versatility in Posi-Shell to provide alternate daily cover that does it's job - but can also be turned into a great erosion control cover, intermediate cover.... and so much more. Why would anyone want to use anything else?

Waste Expo - will you be there?

We're actively preparing for the upcoming InfoEx conference and reception at the Waste Expo. There are no better people than our customers to tell you about how well Posi-Shell works in the field.

If you're going to be there - we'd love to see you. Call us to register and be sure to stop by our booth #13003 at the show.

InfoEx June 9th

June 9th Landfill Service Corporation is proud to announce a new event, InfoEx. Taking place in association with the Waste Expo in Las Vegas, Nevada at the Las Vegas Convention Center. The InfoEx Conference is your opportunity to interact with industry professionals who share your challenges.

Join us for a practical session and learn how Posi-Shell can help you confront the economic issues we are facing in 2009. Our speakers (all long-term Posi-Shell users) will share with the group how, by using Posi-Shell, they have....

• Reduced their operating costs significantly


• Extended the life of their landfill dramatically


• Increased their versatility

This is a few hours you won't want to miss!

Contact Nancy Crane at 800.800.7671 for registration information. Register by April 15 to receive a free Landfill Service Corporation Hat. We hope to see you there.

Welcome Back

Customers in the Central Region can look forward to an old face visiting them again. Jim Shumsky is back servicing the Central Region. We're excited to have him and know he'll take great care of that Region.