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23 <br /> C.J. Cornette explained that each blue dot on the map represents a public supply well that <br /> have been 24-hour drawdown tested and are publicly reported as in operation right now by <br /> NCDEQ Public Water Supply. These public supply wells provide an understanding of how wells <br /> in different rock types perform. He explained that by looking at well trends paired with geologic <br /> trends gives an idea of how conducive a site is for a well before drilling begins. He said a well the <br /> measures approximately a gallon per minute per residence is sufficient to support a community. <br /> Despite the practice of prioritizing areas of high likelihood before drilling wells, he explained that <br /> it's impossible to know for sure until drilling begins. The other factors allow for a first glance to <br /> decide if it's even worth drilling. C.J. Cornette said with public water supply wells, there are <br /> guidelines about how far a well can be drilled from certain setbacks. For example, every <br /> community supply well must have a 100 ft radius controlled by the owners of the well, and he said <br /> his company recommends a 110 ft radius. <br /> Slide #12 <br /> Public Supply Well Siting <br /> Distance ft Potential Source of Pollution• <br /> Setback requirements 100 • From any sanitary sewage disposal system,sewer,or sewer pipe unless sewer is <br /> constructed oFwater main materialsand joints,In which the sewer pipe shall be <br /> at least 30 feet from the well. <br /> • From buildings,mobile homes.permanent structures,animal houses or lots, <br /> cultivated areas to which chemicals are applied. <br /> • 1 00' radius controlled by the • Fromachemcalo surface rp g ry <br /> • From a chemical ar etroleum Fuel unde ound storage tank with semnda <br /> containment <br /> operators of t h e well • From an other potential source of Dilution not listed in this table. <br /> 200 • From a subsurface sanitary sewage treatmentand disposal system designed for <br /> 3,000 or more gal tons of wastewater a day,unless your well water source is a <br /> confined a ui€er. <br /> 300 • From Any Cemetery or burial ground. <br /> Soo • From a septage disposal slte. <br /> • Requires a P G o r P E to • coFror a chemical or petroleum fuel underground storage tank without secondary <br /> ntainment <br /> • From the boundary ofa ground wa aminationarea. <br /> submit a sealed letter to NC <br /> • From aSani[ary landfill or nor-permitted <br /> non-hazardous solid waste disposal <br /> site. <br /> D E Q e e rt i fy i n g due diligence 1,000 • From a hazardous waste disposal site or in any location which conflicts with the <br /> North Carolina Hazardous Waste Mans emeot Rules cited as SSA NCAC I3A <br /> regarding setbacks <br /> P,f� A <br />