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<br /> <br /> <br />Review Comments for the Dowe Flats Mining and Reclamation Plan (Application for <br />;Regular 112 Permit) <br />August 10, 1993 <br />,Page 3 <br />5. Exhibit G -Ground Water: Has a ground water analysis been completed to <br />determine the effect, both in quality and flow, of the mining operations on the <br />permitted wells in and adjacent to the mining boundary? The City requests such <br />a study be performed prior to the commencement of mining operations. As with <br />surface water, additional background monitoring data should be acquired to <br />determine the existing quality of wells that may be affected. The applicant does <br />not appear to consider groundwater level to be an issue, however seasonal <br />groundwater can be very high throughout the area. Both quality and quantity <br />issues should be investigated further. <br />Comments concerning the Special Use Permit Application: (Docket SU-93-14) <br />1. The feedlot/dairy at the site should have increased treatment and runoff control. <br />It does not seem that a feedloUdairy operation is the primary intended use for this <br />property and real concerns about operations and maintenance at the site exist. <br />It would be best if the feedlot operations were terminated. <br />2. We will need additional information on the septic system contemplated. What <br />is the age and condition of the existing system? Is it adequate for the increased <br />use. It would be highly recommended to discontinue use of the existing system <br />and install a new system on the downstream side of the Highland Ditch. <br />3. On page 7, the application states existing water rights will be used. What water <br />rights are being referred to? Will they need a change of use decree? What water <br />will be used for augmentation requirements? Has an augmentation study been <br />performed yet? <br />4. On page 68, the applicant states support for the St. Vrain Creek Corridor trail <br />system. Does this imply agreement to a trail access along any stream corridor <br />owned by the applicant and a trail under the future haul road bridge crossing of the <br />creek? <br />5. Boulder County should require a set mining phasing plan to insure the entire <br />site is not mined at one time and appropriate revegetation efforts are initiated on <br />a reasonable schedule. <br />6. The application notes some blasting vibrations will be experienced offsite. <br />What will the magnitude of these vibrations be in the vicinity of the City of <br />Longmont's treated water storage tank? <br />