The depression of heads around a pumping well caused by the withdrawal of product. Any licensed engineering firm that is involved in the assessment of an environmentally contaminated site. The consultant is hired by the Responsible Party. Any hazardous material which has been introduced to the environment and is not naturally occurring. A material accumulated on top of the groundwater.
Free product is often mobile.
A soil sample obtained without using a coring device. Frequently used during tank removals. The rate of inclination of a slope. The degree of deviation from horizontal. The air space at the top of a water or soil sample.