Wayde Hunter was on LA Talk Radio with our own Edward Headington in the early afternoon today talking about the Sunshine Canyon Landfill.
If you take this link and then click on start button in the box on the upper left (Original Show Date November 3) it will start the session.  Note that this is the start of the show at 00.00 but if you click on the bar you will be able to move the pointer along to the start of the conversation/interview which is at 29:30.

http://topochange.cr.usgs.gov/landfills.php

Topographic change due to landfill operations has been observed based on some of the features delineated by the elevation differencing and thresholding process. The resulting altered landforms from landfills differ from other anthropogenic activities in that much of the deposited material is not rock and soil that had been previously excavated but man-made material that has been transported to the deposition site.

The figure below shows the Sunshine Canyon landfill in Sylmar, California, an example of topographic change due to landfill operations. The operation and expansion of this landfill continues to be a controversial topic in the local area. The close proximity of the landfill site to a major transportation artery is a reminder that visual impacts of human geomorphic activities can be significant.

the Sunshine Canyon landfill in Sylmar, California
Topographic surface change resulting from landfill operation (Sunshine Canyon landfill in Sylmar, California). The images are NED shaded relief (upper left), SRTM shaded relief (upper right), aerial photograph (lower left), and perspective view (lower right). Change polygons (blue = cut; red = fill) have been overlaid on each image. The arrow indicates the view direction (toward the southwest) for the perspective view.

http://articles.latimes.com/1995-12-09/news/mn-12118_1_sunshine-canyon-landfill

The city of Los Angeles will receive more than $500,000 for environmental and community programs and pay “competitive” trash disposal rates under an agreement finalized Friday to reopen the controversial Sunshine Canyon Landfill above Granada Hills.

The agreement also calls on the owner of the dump, Browning-Ferris Industries Inc., to drop a $400-million lawsuit against the city, according to sources and city reports. Continue reading