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Chapter 12 - Glossary of Terms <br /> Data Element. A specific type of information required by the Minnesota Department of Health to <br /> prepare a wellhead protection plan. <br /> Drinking Water Supply Management Area (DWSMA). The surface and subsurface areas <br /> surrounding a public water supply well, including the wellhead protection area,that must be managed <br /> by the entity identified in the wellhead protection plan. (Minnesota Rules,part 4720.5 100, subpart 13). <br /> This area is delineated using identifiable landmarks that reflect the scientifically calculated wellhead <br /> protection area boundaries as closely as possible. <br /> Emergency Response Area(ERA). The part of the wellhead protection area that is defined by a one- <br /> year time of travel within the aquifer that is used by the public water supply well(Minnesota Rules <br /> part 4720.5250, subpart 3). It is used to set priorities for managing potential contamination sources <br /> within the DWSMA. <br /> Emergency Standby Well. A well that is pumped by a public water supply system only during <br /> emergencies, such as when an adequate water supply cannot be achieved because one or more primary <br /> or seasonal water supply wells cannot be used. <br /> Inner Wellhead Management Zone(IWMZ). The land that is within 200 feet of a public water <br /> supply well (Minnesota Rules,part 4720.5 100, subpart 19). The City of Pequot Lakes must manage <br /> the IWMZ to help protect it from sources of pathogen or chemical contamination that may cause an <br /> acute health effect. <br /> Nonpoint Source Contamination. Refers to contamination of the drinking water aquifer that is <br /> caused by polluted runoff or pollution sources that cannot be attributed to a specifically defined origin, --, <br /> e.g.,runoff from agricultural fields, feedlots,or urban areas. <br /> Point Source Contamination. Refers to contamination of the drinking water aquifer that is attributed <br /> to pollution arising from a specifically defined origin, such as discharge from a leaking fuel tank, a <br /> solid waste disposal site, or an improperly constructed or sealed well. <br /> Primary Water Supply Well. A well that is regularly pumped by a public water supply system to <br /> provide drinking water. <br /> Seasonal Water Supply Well. A well that is only used to provide drinking water during certain times <br /> of the year, either when pumping demand cannot be met by the primary water supply well(s) or for a <br /> facility, such as a resort,that is closed to the public on a seasonal basis. <br /> Vulnerability. Refers to the likelihood that one or more contaminants of human origin may enter <br /> either 1) a water supply well that is used by the City of Pequot Lakes or 2)an aquifer that is a source of <br /> public drinking water. <br /> WHP Area(WHPA). The surface and subsurface area surrounding a well or well field that supplies <br /> a public water system,through which contaminants are likely to move toward and reach the well or <br /> well field(Minnesota Statutes,part 103I.005, subdivision 24). <br /> WHP Plan Goal. An overall outcome of implementing the WHP plan,e.g.,providing for a safe and <br /> adequate drinking water supply. <br /> WHP Measure. A method adopted and implemented by a City of Pequot Lakes to prevent <br /> contamination of a public water supply, and approved by the Minnesota Department of Health under '1 <br /> Minnesota Rules,parts 4720.5110 to 4720.5590. <br /> WHP Plan Objective. A capability needed to achieve one or more WHP goals,e.g., implementing <br /> WHP measures to address high priority potential contamination sources within 5 years. <br /> 23 <br />