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<br />Summary (Hydrology) <br /> <br />Except for QW, the sections describing the general hydrology are well presented. The <br />discussion on lateral movement and discharge sites of groundwater seems incomplete. <br />Data collections must be made along generally acceptable procedures adopted by the <br />hydrologic community. <br />Chemical analysis should be complete, reviewed for anomalies, periodically verified by <br />a 3rtl party, and analyzed by a EPA approved lab. <br />The monitoring plan must be redesigned and started immediately to establish current <br />baseline conditions and long term impacts. <br />Hydrologic interpretations are depended upon good data. Some data incorporated in <br />the EIS could lead to erroneous conclusions by regulatory agencies about existing <br />conditions. Decisions should be based on good science. <br />Worst case scenarios, although reduced to a low probability by the project managers, <br />should be addressed for both short term and long term impacts. <br />Section 5.4 cumulative impacts ignores concerns expressed in the report, especially <br />chapter 4 (pg. 4-14). Hydrology is a big impact possibility! The five lines that <br />summarize this potential seem very incomplete . <br />Cannot address subsidence -probably should be reviewed with previous EIS reports <br />on solution mining. <br />Specific comments are shown on the attached pages from the EIS (attachment 2.). <br />Respectfully Submitted <br />Bob Tobin <br />cc: Woodword Clyde <br />RBC <br />Steigers <br />