Laserfiche WebLink
1 <br /> Mr. Jeff Van Slooten <br /> Page 4 <br /> distance at which an observation well must be located to obtain a <br /> specific drawdown in an equivalent isotropic system. A Kr/KZ <br /> value of 2 .84 is presented on page B-5. This value was <br /> calculated for r=15 feet, or the location of observation well <br /> DSW-4B. Unless and until other values of Kr/KZ are calculated at <br /> other observation wells, the hydraulic conductivity ratio applies <br /> only to the area in the vicinity of DSW-4B. Without similar <br /> calculations for other locations, it is misleading to imply that <br /> the aquifer is equally as anisotropic in other directions or at <br /> other locations. This distinction should be discussed beneath <br /> Equation B. 6 on page B-5. <br /> In summary, it is encouraging to see that a variety of aquifer <br /> test analysis methods were used to examine the data. However, a <br /> more thorough overall explanation describing why each method was <br /> chosen and why it is believed that one method is more appropriate <br /> than the others should be included in the text and appendices. <br /> J <br /> Diane Nork, Engineering Geologist <br /> Technical Services Unit <br /> Toxic Substances Control Division <br />