Other environmental considerations aren’t always related to ecosystems, from cultural or historic preservation to site contamination. Site contamination is a particularly important issue because as communities increasingly become more densely developed, it’s often necessary to reclaim land that was previously used for heavy industrial, agriculture, or recreation purposes. In these situations, the land can be contaminated from the previous use and remediation is required prior to redevelopment, particularly when being converted to residential, medical, or educational land uses.