Pekin Landfill

The Pekin Landfill, Tazewell County, project provided about 10,000 tons of mud for use as final cover topsoil on this old landfill in need of proper closing. Supplemental Environmental Project funds from Dynegy Energy were used to bring mud from Lower Peoria Lake to the landfill.

October 14-18, 2007. East Peoria to Pekin Landfill.

Sediment is removed from Lower Peoria Lake at East Peoria with a Cable Arm Clamshell bucket and loaded onto deck barges. Note the mud is stiff and does not run off the end of the barge. A hydraulic clamshell bucket on an excavator arm loaded the mud into trucks for the 17 mile trip to the landfill. The mud was dumped on the top of the landfill's clay cap. It had the consistency of toothpaste and did not run. A small bulldozer was used to consolidate the piles. The last photo shows the depth of sediment over the cap.

clamshell bucket loading river sediment into barge close up of clamshell bucket loading river sediments into barge half full barge with river sediments view of mud spreading out in the barge view of full barge with river sediments heavy equipment that has a clamshell bucket loading dump truck with river sediments trucks driving into the site to unload the mud semi size dump trucks unloading sediments onto the landfill semi truck size dump trucks unloading sediment onto field river sediments falling quickly out of the end of the dump truck another unloading shot worker watching the unloading of a dump truck bulldozer spreading mud around view over the landfill with the mud spread over it and heavy equipment in the background view over the landfill with mud spread out, heavy equipment in the background and workers on the edge of the mud field

October 19, 2007. Pekin Landfill.

A press conference with local officials, a representative of Attorney General Lisa Madigan and Lt. Gov. Pat Quinn was held on Oct. 19. Quinn and Madigan arranged the funding for the project. Note the lack of vegetation on the clay cap.

dignitaries watching the mud poor out from a semi truck sized dump truck dignitaires watching Lt. Gov. Quinn speak at the press conference at Pekin Landfill

November 2007. Pekin Landfill

The first two photos taken on the 11th show sediment drying on the site and desiccation cracks are forming. By the 30th the top of the sediment is dry and crumbling as soil structure begins to form. Rainwater accumulates in the cracks reducing runoff and the risk of erosion prior to vegetation becoming established.

dignitary looking over field of mud on top of Pekin Landfill view of dried mud cracks over the landfill view of wets spots in the middle of the mud field

March 28, 2008. Pekin Landfill.

After a winter of freezing and thawing, the top six inches of sediment has developed granular soil structure. Soil is falling into the desiccation cracks.

researcher walking over partially formed soil close up of hand holding granular soil

July 23, 2008. Pekin Landfill.

Vegetation is well established on the topsoil formed from the sediment and makes a sharp contrast with the landfill clay cap. Most of the vegetation is from seeds blown onto the site. Cracks are still visible in some areas.

thick grass vegetation on the mud plot another view of plants on the newly formed soil view of a few cracks in the mud where plants haven't started growing yet

March 24, 2009. Pekin Landfill.

After a second winter of weathering, soil structure is well formed (first photo). The topsoil and plants are visible on top of the original (light tan colored) landfill surface.

rich dark top soil with a lady's foot in in the photo for comparison dried grasses over landfill researcher checking over top soil with dried grasses from last fall

September 15, 2010. Pekin Landfill.

After three years vegetation is well established on the new layer of topsoil. A variety of plants have colonized the area and wildlife is taking advantage of the lush vegetation.

grass covering the landfill with two trucks and an ATV in the background researchers walking up the side of the landfill checking its progress view of yellow wild flowers growing over the landfill