 |
SRP Geographical Information Systems (GIS)The Immediate Environmental Concern (IEC) GIS Layer
|
|
The Immediate Environmental Concern (IEC) GIS Layer
Introduction
The GIS IEC layer identifies and locates active IEC sites. IECs involve a condition at a contaminated site where people are exposed to hazardous substances
that exceed applicable health-based criteria or standards. IECs are priority sites for the Department with direct oversight and expedited cleanup timeframes.
Current Site Remediation Program (SRP) regulations require a GIS compatible map to be submitted when an IEC is identified. The IEC Technical Guidance includes
more specific GIS guidelines for IEC mapping. The GIS IEC layer is updated nightly. There are three types of IECs displayed on the GIS IEC layer: potable well,
vapor intrusion, and direct contact. Descriptions for each type of IEC are provided below:
-
Potable Well IEC - A potable well IEC exists when discharges of hazardous substance(s) result in contaminants above the Class II Ground Water Remediation
Standards in water being used for potable purposes (per N.J.A.C. 7:26C).
-
Vapor Intrusion IEC - A vapor intrusion IEC exists when discharges of hazardous substance(s) result in contaminants above an indoor air Rapid Action
Level (RAL) in a building and there is a demonstrated pathway between the subsurface hazardous substance release and the RAL exceedance in the overlying building.
-
Direct Contact IEC - A direct contact IEC exists when discharges of hazardous substance(s) result in the presence of contaminants above acute health
effects levels in the upper six inches of the soil column and there is actual or potential for human contact via dermal contact, ingestion, or inhalation. An
acute health effect is when an adverse human health impact could result from an exposure of less than two weeks.
Definitions
| IEC Definitions |
|---|
| Immediate Environmental Concern (IEC) |
IECs are priority cases that involve a condition at a contaminated site where people are exposed to contamination at levels that exceed applicable
screening levels or standards. IEC conditions can include drinking contaminated water (potable water), breathing contaminated indoor air (vapor intrusion), and contact
with contaminated soil (direct contact).
|
| Source |
The source is where the initial contamination occurred. At times the source is "unknown" and only the receptors are known. |
| Receptor |
A receptor for an IEC is any human. |
| Vapor Intrusion |
Vapor intrusion is the migration of volatile chemicals from the subsurface into overlying buildings through subsurface soils or preferential
pathways such as underground utilities.
|
Reports
There are two IEC reports on the SRP Data Miner page. The first report includes all active IECs sorted by county
and municipality. The second report gives the user the opportunity to select one municipality at a time. The IEC reports include additional data such as "PI Number",
"Case Manager" and "IEC Type."
Other Resources
Contacts
Additional information concerning an IEC case can be obtained by contacting Andrew Sites of the Immediate Concern Unit (ICU) at (609) 530-2582 or the Licensed Site
Remediation Professional (LSRP), if one is associated with the case, based on the LSRP contact information provided in the IEC layer.
|
|
|
