Definitions. For purposes of this section, the following terms are defined below:
AQUIFERGeologic formation composed of rock, sand or gravel that contains significant amounts of potentially recoverable water.
IMPERVIOUS SURFACEMaterials or structures on, above or below the ground that do not allow precipitation or surface water to penetrate directly in the soil.
INTERIM WELLHEAD PROTECTION AREA (IWPA)Where the Zone II has not yet been delineated and approved by the Massachusetts Department of Environmental Protection (DEP), an interim wellhead protection area shall consist of the area within a one-half-mile radius (2,640 feet) measured from the well or wellfield for sources whose approved pumping rate is 100,000 gpd or greater. Regulations applying to a Zone II shall apply equally to an interim wellhead protection area.
MININGThe removal or relocation of geologic materials such as topsoil, sand, gravel, metallic ores or bedrock.
RECHARGE AREASAreas that collect precipitation or surface water and carry it to aquifers. Recharge areas may include areas designated as Zone I, Zone II or Zone III.
TOXIC OR HAZARDOUS MATERIALAny substance or mixture of physical, chemical or infectious characteristics posing a significant, actual or potential hazard to water supplies or other hazards to human health if such substance or mixture were discharged to land or water of the Town of Barre. Toxic or hazardous material include, without limitation, synthetic organic chemicals, petroleum products, heavy metals, radioactive or infectious wastes, acids or alkalis, and all substances defined as toxic or hazardous under MGL c. 21C and 21E and 310CMR 30.00, and also include such products as solvents and thinners in quantities greater than normal household use.
WELLHEAD PROTECTION DISTRICTThe zoning district defined to overlay other zoning districts in the Town. The Wellhead Protection District may include specifically designated recharge areas.
ZONE IThe protective radius required around a public water supply well or wellfield. For purposes of this bylaw, the required radius is 400 feet.
ZONE IIThat area of an aquifer which contributes water to a well under the most severe pumping and recharge conditions that can be realistically anticipated (180 days of pumping at safe yield, with no recharge from precipitation). It is bounded by the groundwater divides which result from pumping the well and by the contact of the aquifer with less permeable materials such as till or bedrock. In some cases, streams or lakes may act as recharge boundaries. In all cases, Zone II shall extend up gradient to its point of intersection with prevailing hydro-geologic boundaries (a groundwater flow divide in contact with till or bedrock, or a recharge boundary).