Anyone who could give me a summary of Donna Cousin's novel LANDSCAPE....pls

The novel, Landscape, details the struggle of Mark Grant, as he coped with the loss of his job. At the height of his corporate career, he loses his job.... the one thing that held his full attention. As a result, Mark picks himself up and starts small but profitable landscape business. Over the course of the novel, he learns that his company is part of a vast network, threatening not only his livelihood, but the lives of his family, friends, and countless others as well. When Mark starts to collect evidence of illegally dumped biohazardous waste to present to the Department of Environmental Health, he finds his family the objects of threats.