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32 <br /> concern. The farther apart the wells are, the less likely they are to <br /> influence each other <br /> • What is the impact of a well if it is near the headwaters of a stream? <br /> o Since the creeks are usually a few feet deep, and community wells are <br /> around 55 feet deep, it is unlikely that it would be taking water from the <br /> stream. <br /> o Surface water is transported away from the site; wells use deeper water that <br /> is recharged farther from the site <br /> o If groundwater is feeding a spring, and you tap into the groundwater ahead of <br /> that spring,you may affect the spring. Community wells are less likely to do <br /> that kind of thing than a private residence well. <br /> • Do wells have an effect on the water table's pressure? <br /> o Community wells in crystalline rock(like in Orange County)would generally <br /> not have an effect on the water table or the aquifer <br /> • Can any portion of our county be predictable or not for water supply/aquifer? <br /> o Yes and no. Every well is different. We can use the information at our disposal <br /> to reduce the risk or randomness in drilling, but there will always be risk. <br /> • Can wells be tested ahead of approval for zoning change or building? <br /> o Yes, and they should be.This work can be completed prior to any <br /> development on a property. No development work should be undertaken <br /> without ensuring that well water(or another water source) can sustain the <br /> development. <br /> • What are the most common human impacts on well yield? <br /> o Usually irrigation-related (especially for landscaping) <br /> o Otherwise,just the regular consumption and use of water <br /> • Impacting other wells? <br /> o All wells run the risk of impacting other wells, community or private. <br /> Community wells are typically focused on due to the higher demand they <br /> require with more residences connected. However, the increased efficiency <br /> of operators and distribution systems with the higher scruple of regulatory <br /> agencies means they are also generally maintained and monitored to a <br /> higher degree than private wells. <br /> 0 24-hour drawdown tests performed on community wells area great <br /> opportunity to monitor nearby wells for fracture interconnectivity. <br /> • Costs to drill? <br /> o This can vary widely, but the major expenses in drilling are the surface <br /> casing, well diameter, and depth requirements. <br />