Orange County NC Website
Browse       Search
25 <br /> Slide #30 <br /> Community Well System <br /> Studied <br /> • Community Well has been permitted by <br /> Orange County <br /> • Sufficient water capacity exists to serve the <br /> planned 43-home community <br /> • Raw data analysis after monitoring two (2) <br /> nearby wells shows that even significant <br /> / withdrawals from the proposed community <br /> well has no impacts shallow or deep nearby <br /> wells <br /> Fox_— <br /> Rothschild <br /> Beth Trahos said they'd heard concerns about the impacts on wells, so they had a study <br /> done on capacity analysis and the impact on adjacent wells. <br /> Ward Marotti said the study they performed was more in depth than what would typically <br /> be done for projects that haven't been rezoned yet. He said there were no measurable impacts <br /> to adjacent wells resulting from full drawdown of the proposed well, and at almost twice the <br /> maximum capacity would be for serving all of the homes at their maximum capacity at one time. <br /> He said they documented variances under normal conditions at adjacent wells, then continued <br /> to collect data from those wells during maximum drawdown of the proposed well. <br /> Beth Trahos said the data was available in the full agenda packet. <br /> Commissioner McKee asked how long the drawdown was. <br /> Ward Marotti said it was 24 hours total, and the steady state was 1 hour, which is typical <br /> protocol. He defined steady state as the pumping out of water to a point where it does not <br /> change the water level within the well being tested. <br /> Commissioner McKee said that he has multiple wells on his property and they have all <br /> had anomalies going on at times. He said he is concerned about anomalies on that much draw <br /> down on surrounding properties. <br /> Chair Bedford asked for an explanation of a statement in the agenda packet, "It is <br /> important to mention that no information was provided for the past, well, installation attempts at <br /> the site that showed no groundwater yield." <br /> Donna Browder from Forestar said they drilled the first well 1,001 feet and got no water. <br /> She said they drilled a second well 600 feet down and hit 90+ gallons per minute. She said they <br /> reason they studied the wells before and after the drawdown was to measure the anomalies that <br /> occurred daily on those wells. She said the drawdown lasted 24 hours, but they studied the <br /> wells two weeks beforehand to find anomalies. <br /> Ward Marotti said they collected several weeks of ambient data prior to the drawdown, <br /> and then several weeks of ambient post draw down, as well as doing the initial drill testing <br /> almost six months prior. He said they had very similar results with capacity. <br />