Orange County NC Website
... For slug tests performed in <br />homogeneous, isotropic formations that <br />would be classified as aquifers, the <br />Bouwer and Rice model provides estimates <br />within 30values. In less - permeable, <br />clay -rich formations, however, estimates <br />may overpredict formation conductivity <br />by more than 100 %. The Bouwer and Rice <br />model introduces the largest error <br />(can easily exceed an order of <br />magnitude) in the presence of a <br />low - permeability skin. Uncertainty <br />about anisotropy can also be the <br />source of considerable error. ... <br />3. No large scale testing was performed - no pumping <br />tests <br />4. No downhole distribution of the hydrologic parame- <br />ters were obtained - no flowmeter tests <br />5. Only one temporal snapshot of the water table <br />was obtained DURING THE DRY SEASON. <br />Seasonal water table fluctuations and their implica- <br />tions for leaching contaminants from the landfill have <br />not been investigated. <br />6. Wetlands within the landfill indicate groundwater - <br />surface water interactions. Yet their implications for <br />7 <br />