This page contains information on the process of how SHWD identifies and evaluates orhpan sites in Wyoming.
Orphan Site Identification
Once a site is identified as a potential orphan site, DEQ will determine whether the site is in fact an orphan site. Sites can be identified as potential orphan sites by:
- Referral from other DEQ programs or state agencies
- Citizen complaints, including anonymous complaints
- Evidence of contamination on adjacent properties
- Data submitted voluntarily by property owners or their representatives
- Research efforts by the DEQ or its contractors
If you believe there may be a potential orphan site in your community, please contact Cindi Martinez at (307) 777-2948.
Orphan Site Evaluation
Orphan Sites are evaluated based on the following:
- Potential Contaminants: the toxicity/hazard of the contaminant(s), concentration of the contaminant(s) in soil and groundwater, and hazardous vapors and particulates from the contaminant(s).
- Local Environment: the depth of groundwater and proximity to surface water.
- Human Exposure: proximity to drinking water source and land use.
- Ecological Receptor: whether there is important/sensitive habitat or threatened or endangered species near the site.
DEQ uses an Orphan Site Evaluation Worksheet to document the risks at a site.