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<br />cottonwoods and ripazian vegetation alive using this technique. At the very least, we want this <br />approach tested in a modeling scenario before Camilletti Pit #2 is approved. <br />The adjacent wetlands will die. This conclusion is stated by Gerdson, "Ofgreoter concern are the <br />adjacent wetlands to the proposed gravel mining operation ... It is obvious that the water table will be <br />lowered extensively below the existing wetlands bordering the proposed mining operation. The <br />dewatering of the wetlands will inhibit further growth of the wetland species, and cause them to <br />perish, due to the lack of saturated soils. " According to Dr. Cooper, "Water table drawdown more <br />than 0.5 to 0.75 m during the summer will result in wetland plant death and the loss of the wetlands. " <br />This does not mitigate the potential negative effects to wildlife and wildlife habitat as zoning laws <br />require. <br />Gerdson also says "Planting cuttings or seedlings in open areas 6-10 feet apart may reduce the <br />concern of lateral accretion of the Yampa River towards the gravel pit by stabilizing the stream banks. <br />Although this requires several growing seasons for the seedlings to establish extensive root systems, <br />this will enhance the health of the ecosystem and provide for long-term development of the cottonwood <br />canopy and create riparian habitat. A 100 foot buffer from all riparian species is necessary to <br />properly mitigate the cottonwoods and wetland vegetation to establish and sustain along-term healthy <br />riparian corridor. " Dr. Cooper says, "All of this information is incorrect. Cottonwoods cannot stop <br />lateral stream movement. You cannot establish seedlings or cuttings well above the water table, etc." <br />Gerdson reports that "A 100' buffer from the cottonwood drip line would ensure the health of the <br />cottonwoods given the above mitigation techniques (outlined in his report)"but Dr. Cooper says there <br />is no analysis in his report that leads to this conclusion. It appears that Gerdson has taken Mr. <br />Camilletti s desire for a compromise between the 50 feet (from the tree dripline) that he wants and the <br />250 foot buffer that Planning Department recommended. Perhaps that is the conversation that was <br />held when we saw Mc Camilletti and Mr. Gerdson together on the property when the study was being <br />conducted. <br />Dr. Cooper says that "His (Gerdson's) drawdown figures indicate that drawdowns of more than 1 m, <br />su~cient to injure or kill cottonwoods, will occur along his transect A at 60-6~ m from the pit, and <br />along transect B at 90-95 m. from the p;r, These are 7.3+ times morn than 100 feor, Ifthe modoting is <br />redone to address the likelihood that the seep face in the pit will be at the pit bottom, not at 4-7 m <br />above the bottom, then drawdowns could extend much further." We want the modeling redone from <br />the pit bottom by an expert in this field. If this is not done, you do not know that a 100' buffer <br />provides enough space for adequate mitigation. <br />This gravel mining operation should not be approved unless you are sure mitigation techniques will <br />work to the satisfaction of the County's Zoning Resolution. Gerdson's statement that, "Many site- <br />specific questions still remain to determine the actual impacts associated with the gravel mining <br />operation, which will 6e answered if mining is allowed" is totally unacceptable. We agree with Dr. <br />Cooper when he says that permitting the gravel pit as an experiment to see what actually happens is <br />not realistic. We may not have the influence of those who live in Steamboat, but we are not guinea <br />pigs. We are County residents and deserve to at least have the appearance of adequate representation <br />by our County officials. <br />Again, any decision solely based on the validity of [he Gerson report as it relates to visual and noise <br />and wildlife habitat mitigation must be considered arbitrary and capricious. <br />