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If the past use and occupation of the land can be traced and documented via former owners, aerial photographs and other relevant records, this information can be used to produce a site history. Where a full site history establishes that the land was not likely to be contaminated by current or former land uses, further investigation of the site may be avoided.

The information to be compiled for a site history includes, but is not limited to:

  • Zoning, development & building records
  • Land Use; previous, present & proposed
  • Statements from previous owners
  • Aerial photographs
  • Site photographs
  • Historical use of adjacent land
  • Local usage of ground & surface waters
  • Relevant complaint history

In addition, the concentrations of contaminants in soil and water that are considered to require further health investigation have been determined for many commonly used chemicals and heavy metals. A list of these threshold levels can be viewed by clicking on this link:

Display # 
# Web Link Hits
1   Link   Site Contamination
2   Link   Threshold levels