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23 <br /> 1 C.J. Cornette explained that each blue dot on the map represents a public supply well <br /> 2 that have been 24-hour drawdown tested and are publicly reported as in operation right now by <br /> 3 NCDEQ Public Water Supply. These public supply wells provide an understanding of how wells <br /> 4 in different rock types perform. He explained that by looking at well trends paired with geologic <br /> 5 trends gives an idea of how conducive a site is for a well before drilling begins. He said a well <br /> 6 the measures approximately a gallon per minute per residence is sufficient to support a <br /> 7 community. Despite the practice of prioritizing areas of high likelihood before drilling wells, he <br /> 8 explained that it's impossible to know for sure until drilling begins. The other factors allow for a <br /> 9 first glance to decide if it's even worth drilling. C.J. Cornette said with public water supply wells, <br /> 10 there are guidelines about how far a well can be drilled from certain setbacks. For example, <br /> 11 every community supply well must have a 100 ft radius controlled by the owners of the well, and <br /> 12 he said his company recommends a 110 ft radius. <br /> 13 <br /> 14 Slide #12 <br /> Public Supply Well Siting <br /> Distance R_ _ Potential Source of Polludon <br /> • <br /> Setback requirements 100 • From anysanitary sewage disposal system,sewer,or sewer pipe unless sewer is <br /> constructed of water main materials and Itumm,In which the sewer pipe shall be <br /> at least 50 feet from the well- <br /> 9 <br /> elt+ 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 • From acherecalorp g secondary <br /> + From a chemical or petroleum Fuel underground storage tank with <br /> cnntalnment <br /> operators of the well + Froman other potential source of nitution not listed in this table. <br /> 200 + From a subsurface sanitary sewage treatment and 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 infer. <br /> 300 • Froman camels or burial round. <br /> 500 From aseptage disposal stu. <br /> • Requires a PG or PE to • From a chemical or petroleum fuel underground storage tank without secondary <br /> containment, <br /> on area. <br /> submit a sealed letter to NC • From a sanitary <br /> boundary ofa ground noninahrclous <br /> Fromasanitary landfill or non-permitted non-hazardous solid waste disposal <br /> site. <br /> DEQ certifying due diligence 1,000 . From a hazardous waste d sposal site ar in any locatlan which conMcts with the <br /> North Carolina Hazardous Waste Mana anent Nulesdted as 15ANCAC AfiL <br /> regarding setbacks <br /> 15 ARM a <br /> 16 <br /> 17 <br />