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HomeMy WebLinkAbout20041905 Ver 1_Information Letter_20050315e~~ NCDENR htrCEIVEb M.C. gr~ot of EUR A ~ ~ ~ I S^hrat::n-,Salts I f<o:~;:na f:.::~; North Carolina Department of Environment and Natural Resources Division of Parks and Recreation Michael F. Easley, Governor William G. Ross Jr., Secretary Lewis R, Ledford, Director March 10, 2005 Ms. Sue Homew d NC DENR 'nston Salem Regional Office Divisi f Water Quality, Water Quality Section ~'SWaughtown Street Winston Salem, NC 27107 Dear Ms. Homewood: The North Carolina Division of Parks and Recreation (Division) appreciates the opportunity to comment on the proposed paving of SR 1127 (Shawnee Road). Beach Creek Bog, recently protected by the North Carolina Division of Parks and Recreation for its unique characteristics, is adjacent to the proposed paving project. Beech Creek Bog is considered nationally significant and represents the first example of a southern Appalachian bog in the State Parks system. Unlike northern bogs of glacial origin, southern Appalachian bogs form in poorly drained depressions or on gentle slopes. Beech Creek Bog is noteworthy because both the bog itself and the surrounding watershed show very little disturbance and contain natural communities of excellent quality. There are a number of rare and threatened species that inhabit the bog and associated uplands including Northern Saw-whet Owl (Aegolius acadicus), Alder Flycatcher (Empidonax alnorum), Northern Long-eared Myotis (Myotis Septentrionalis), Least Weasel (Mustela nivalis), Gray's Lily (Cilium grayi), Bog clubmoss (Lycopodiella inundata) and a number of rare mollusks. The potential for impacts from the paving of SR 1127 on this unique bog complex has led to the submission of these comments. The Division's preferred alternative for the project would be no paving at all (keeping the entire stretch of Shawnee Road adjacent to the bog as a "gap") since this option would result in no change in the current volume and chemistry of runoff. In addition, this option would also alleviate some of the secondary and commutative impact concerns associated with this project. This option would also eliminate the use of de-icing chemicals along the stretch of road adjacent to the bog. 1615 Mail Service Center, Raleigh, North Carolina 27699-1615 One Phone: 919-733-4181 • FAX: 919-715-3085 • Internet: www.ncsparks.net NorthCarolina An Equal Opportunity • Affirmative Action Employer - 50 % Recycled • 10 % Post Consumer Paper ~atura!!t~ Mr. Ms. Homewood Page 2 March 10, 2005 Our second alternative would be to design the paving of SR 1127 to reduce the impact of de- icing material on the Bog. Areas where splash or spray from salted roads can be transported through air and impact sensitive vegetation. In addition, wetlands that directly adjoin roadway ditches and that receive runoff in the form of salty snowmelt waters are also potential management concerns. Protection of the bog is feasible attained by designing the paved section of the road to minimize runoff directed towards the bog. The Division suggests crowning the straight section of the road adjacent to the bog (see section A in the enclosed map). Crowning of this section will allow sheet flow on half the road adjacent to the bog and ditching on the other half of the road. The ditch will be discharged at its current location (located at the intersection of sections A and B on the enclosed map)_ The next section of road should be super-elevated away from the bog (see section B). The super elevated section should be ditched and the discharge -point should be at the end of this section (see point C ~on the enclosed map). This discharge point allows for the maximum distance between the discharge of stormwater and the bog. We appreciate the Division of Water Quality's efforts to protect this unique bog community that supports a "globally rare" ecosystem. If you have further questions regarding these comments please don't hesitate to call me at (919) 715-8711 Sincerely, . / ...-.-,~U~--.- Brian L. Strong Resource Management Specialis cc: Heath Slaughter, DOT Environmental Officer Walt Gravley, West District Superintendent Larry Trivette, Elk Knob State Natural Area Superintendent Scott Pohlman, NC Natural Heritage Program Enclosure February 2005 0 1000 [uuu reel Beech Creek Bog State Natural Area N Road Pavin 9