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HomeMy WebLinkAbout20040271 Ver 1_Other Agency Comments_20020620 (2)HYDRAULICS DESIGN & PERMIT DRAWINGS REVIEW MEETING, ROWAN COUNTY I-2511CB 9-19-02 Team Members: Elizabeth Lusk, NCDOT PDEA(PRESENT) Cynthia Van Der Wiele, NCDWQ(PRESENT) Eric Alsmeyer, USACE(PRESENT) Marla Chambers, NCWRC, (PRESENT) Marella Buncick, USFWS, (ABSENT) Chris Militscher,EPA, (ABSENT) Particpants: Randy Henegar, NCDOT Hydraulics David Chang, NCDOT Hydraulics Roger Thomas, NCDOT Roadway Diane Hampton, NCDOT Div. 9 Jerry Parker, NCDOT PDEA Greg Crosby, NCDOT Hydraulics Subject: 4C Meeting Randy Henegar opened the meeting going over the general outline of the permit, and pointed out some of the points made from the meeting on June 20, 2002. Randy Henegar stated that the Natural Stream Design still had some work left to be done. Elizabeth Lusk and Randy Henegar then proceeded to go over each permit site. Site 1: Marla Chambers brought up the question about diversion channels being used when installing small pipes and the impact that these diversion channels may cause. Randy Henegar and David Chang said that it depended on the site and that in some cases the pipes could be laid in the wet, but in some cases depending on the location of the stream a diversion channel may be necessary to keep the channel on a good alignment. Site 2: Elizabeth Lusk said it was intermittent with mitigation ,and along with Eric Alsmeyer said the sight should be rechecked by PDEA and Hydraulics for additional impacts.Make adjustment in permit drawings if needed. Site 3:Elizabeth Lusk pointed out the non jurisdictional and the jurisdictional part of the stream. Make adjustments in permit drawings if needed. Site 4: No mitigation at this site. Site 5: Randy Henegar handed out additional information on the channel change and natural stream design.Randy Henegar discussed the Morphological Table and the characteristics of the existing creek and how they compared to the reference stream(Big Branch, Surry County) and the differences between them. A question was asked about why stream relocation was put at its current location and about the placement of ramps, service roads and bridges because of the impact these locations will have on Town Creek. Roger Thomas explained why ramps and service roads have been revised due to right of way constraints and design standards. The stream relocation was put in the center of the floodplain and meets the criteria for natural stream design. Randy Henegar talked about the borings that were taken on natural ground along the stream relocation ,and how close bedrock would be to the proposed bed of stream relocation. Also discussed was the stockpiling of bed material from the existing creek so it may be used in the bed of the proposed stream relocation. Site 6: Elizabeth Lusk says there will be fill in wetlands. Perennial stream and that there should be an impact. Site should be looked at again by PDEA and Hydraulicse Site 7: No comments Note: Address Design Build (July contract) and submitting Floodway Modification. Some sites where the wetlands extend just outside the fill slopes will be considered a total impacted area. Site 8: Question of why service road was located where it was. Roger Thomas said he would look into it; and report back to team members.