§ 26-503. Definitions.

Aquifer means any stratum or zone of rock beneath the surface of the earth capable of containing or producing water from a well.

Director means the director or his/her designee of the Fulton County Department of Environment and Community Development.

DRASTIC means the standardized system for evaluating groundwater pollution potential using the hydrogeologic settings described in U.S. Environmental Protection Agency document EPA-600-2-87-035. (Note: the DRASTIC methodology is the most widely used technique for evaluating pollution susceptibility).

Pollution susceptibility means the relative vulnerability of an aquifer to being polluted from spills, discharges, leaks, impoundments, applications of chemicals, injections and other human activities in the recharge area.

Pollution susceptibility map means the relative vulnerability to pollution prepared by the department of natural resources, using the DRASTIC methodology. (Georgia Department of Natural Resources Hydrologic Atlas 20: Groundwater Pollution Groundwater Pollution Susceptibility Map of Georgia).

Recharge area means any portion of the earth's surface where water infiltrates into the ground to replenish an aquifer.

Septic tank means an approved watertight structure installed underground to receive sewage from a building, effecting separation and organic decomposition of sewage solids and discharging effluent to an absorption field or another element of an onsite sewage management system.

Significant recharge areas means those areas mapped by the Georgia Department of Natural Resources in Hydrologic Atlas 18 (1989 edition). Mapping of recharge areas is based on outcrop area, lithology, soil type and thickness, slope, density of lithologic contacts, geologic structure, the presence of karst, and potentiometric surfaces.

(Ord. No. 02-0928, § 3, 8-21-02)