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feels it is necessary for a simulation of the leachate flux rate to be done under these <br />conditions. DMG would also like to know which exact "worst case" quantity of leachate <br />resulted in modeled exceedance of the water quality parameters in the alluvium, and to what <br />extent the standards were exceeded. <br />3) In Appendix D, in the HELP data sets, a key is needed to clarify which materials are being <br />evaluated in each layer, since they aze only identified hereby Material Texture Number. The <br />basis upon which the values for layer thickness were chosen should also be made clear, since <br />some of these numbers do not match previously mentioned distances or sedimentary layer <br />depths. <br />Please submit this information as soon as possible so [ha[ DMG may complete our evaluation of <br />the CKD disposal on site, and determine whether any modifications to your permit may become <br />necessary. DMG hopes to make a determination regarding this portion of your permit by <br />September 30, 1999. <br />If you have any further questions, please contact me at (303) 866-3567.. <br />Sincerely, <br />~~~~~ <br />Christina L. Kamnikar <br />Environmental Protection Specialist <br />Cc: Cazl B. Mount, DMG <br />H. Bruce Humphries, DMG <br />Harry H. Posey, DMG <br />Paul Banks, Banks & Gesso <br />St. Vrain Community Watch Dogs Group <br /> <br />