I |
| ILCR (Incremental Lifetime Cancer Risk) | The increased potential of acquiring cancer during a life time, as a result of chemical exposure. In Canada, cancer risks are considered negligible where the estimated ILCR is < 1-in-100,000 (<1x10-5). |
| In Situ | In its original place; unmoved unexcavated; remaining at the site or in the subsurface. |
| Industrial | Refers to lands used for heavy industry (i.e., manufacturing, fuel refinement, heavy equipment repair or storage etc). |
| Infiltration Rate | The quantity of water that can enter the soil in a specified time interval. |
| Information Programs and Other Government Initiatives | Government sponsored programs or initiatives for reducing risk through better information, or improved communication, or incentive or certification programs or series of environmental management standards, or labeling of product. |
| Inhalable Particles | All dust capable of entering the human respiratory tract. |
| Inhalation exposure | Chemical exposure via breathing in vapors or small particles. |
| Inorganic Chemicals | Chemical substances of mineral origin, not of basically carbon structure. |
| Insecticide | A pesticide compound specifically used to kill or prevent the growth of insects. |
| Internal Rate of Return (IRR) | Internal Rate of Return (IRR) is the discount rate that generates a zero net present value for a series of future cash flows. IRR is the rate of return that makes the sum of present value of future cash flows and the final market value of a project (or an investment) equal its current market value. IRR provides a simple ‘hurdle rate’, whereby any project should be avoided if the cost of capital exceeds this rate. |
| IRIS (Integrated Risk Information System) | A risk assessment reference website hosted by the US EPA: http://cfpub.epa.gov/ncea/iris/ . |
