Laserfiche WebLink
For argument sake, lets say there is 20 mgll getting to the ground water. This is <br /> equivalent to 250 pounds of nitrogen in the million.gallons added to the drainfield per <br /> year. This 250 pounds is spread over .6 of an acre. (The application of nitrogen to <br /> lawns is on the same order of magnitude.) The nitrogen, of course, Is added in small <br /> amounts. If the water table is moving, then the nitrogen is diluted and levels of NO3 <br /> would not be a problem. I would not expect nitrates to rise above drinking water <br /> standards. There is a domestic well 100 feet south of the drainfield which could be used <br /> to monitor the nitrates. This well has not been studied for depth. Providing the well has <br /> the correct physical features, it could be sampled periodically for nitrates. It should be ' <br /> sampled now to establish background levels. <br /> The proposed community system does nqt pose a threat to groundwater. The combination <br /> of Irrigating street trees and drainfields will save irrigation water and return highly <br /> treated water to the ground water. i <br /> 1 <br /> Signed <br /> Mike Smith <br /> MHM ENGINEERING STAM P <br /> i <br /> 10 <br />