2004-08-13_REVISION - M1987064 (2)

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No structures are declared in this revision. The map reflects that the affected area is within 200 feet from several fences. Please provide a description of each fence plus ownership information, as well as a statement as to how the structure will not be damaged or how damage will be remediated. Please provide similaz information on any ditches that may be located on or within 200 feet of the affected azea. Geotechnical Stability Exhibit The east river bank is an azea whose stability has been questioned and must be further evaluated. Thank you for providing a copy of the hydrologic study by Winfield Wright. Though the pond azea to be amended to the permit is not in close proximity to the river, the existing permitted azea includes that upstream portion of the river channel and riverbank. Some of that upstream segment of the riverbank is currently riprapped for protection. Other segments aze planned for future riprap installation. The riprap detail provided in [his amendment describes several types of riprap to be installed, which will be evaluated by Division staff. Additionally, the portions of it that exist now will likewise be evaluated for stability, to help estimate the effectiveness of similar types that are still to be installed. This office will contact the operator for scheduling an onsite visit. Other Items Please note that your written response to this letter constitutes additional application material, and as such, must be additionally filed with the county clerk and recorder (similaz to the filing of original amendment materials). Please place a complete copy with the clerk and recorder of all materials submitted to this office, and obtain a receipt for the filing. The receipt must provided to this office prior to the decision date. The decision date was originally set for August 25, 2004. Due to the time needed for the Division's additional engineering evaluation of [he riverbank stability and armoring, and time needed for a response by the operator, the decision date will be extended an extra 30 days (pursuant to Rules 1.4.1(7) and (9)). The new date is set for September 24, 2004. If all adequacy issues are addressed before that date, this office will issue its decision. This office is obligated to state that if all adequacy issues are not addressed satisfactorily by the close of business on the decision date, and no extension has been approved, this application maybe denied. Written Objections and Pre-hearing Conference During the pre-hearing conference that was convened this morning, the one objector who participated in the conference chose to withdraw as an objector party. The other objectors lost their party status by not attending the conference. The Boazd hearing that was tentatively scheduled for the September 22-23, 2004 meeting will not be held. The operator should note, however, that the jurisdictional issues raised in the letters of objection must be addressed, as explored in this letter. Please respond to all items at your eazliest convenience. For questions or responses, I may be reached at the Division's Durango field office: 701 Camino del Rio, Room 125, Durango, CO 81301; telephone 970-247-5193. I look forwazd to receiving your adequacy responses. Sincerely, ~~ \J~ Bob Oswald Enduonmental Protection Specialist Ec: Harry Posey, DMG Cc: Dave Dillon, Sandco, Inc., P.O. Box 4440, Durango, CO 81302 A:\sandco am01 paz/rco