The department shall use the criteria specified in this part to assign priority and notify a public water supplier in writing that a wellhead protection plan must be prepared for an existing well.
A public water supply well is vulnerable if:
the well water contains ten milligrams per liter or more nitrate plus nitrite nitrogen;
the well water contains quantifiable levels of pathogens as defined in part 7040.0100, subpart 26, or chemical compounds that indicate groundwater degradation as defined in Minnesota Statutes, section 103H.005, subdivision 6;
the well water contains one tritium unit or more when measured with an enriched tritium detection method; or
an enriched tritium analysis of the well water has not been performed within the past ten years; and
information on the well construction is not available; or
the geological material from the land surface to where the groundwater enters the public water supply well is:
solution weathered bedrock;
unconsolidated material 0.062 millimeters (fine sand) or larger; or
a combination of the materials specified in units (a) to (d).
MS s 103I.101
22 SR 668
October 27, 2003
Official Publication of the State of Minnesota
Revisor of Statutes