20090139 Ver 1_Staff Comments_20090310

09-0139 EPCOR USA North Carolina - Roxboro Plant
AML Comments
March 10, 2009
Please re-submit your site plans on full plan sheets at a scale of no smaller than
1"=50' with topographic contours shown.
2. Please show the entire stormwater drainage system for the site, including all
stormwater inlets, pipes, swales and outlets, on the plan sheets.
3. Please provide an inventory of imperviousness surfaces in each drainage area.
The inventory should include all proposed building footprints, roads, driveways,
sidewalks, gravel-surfaced areas, amenity areas, etc. A Stormwater Management
Plan (SMP) must be provided for any drainage areas that exceed 24 percent
imperviousness. For each BMP, provide a completed BMP Supplement Form
with all the required items (see http://l12o.enl-.state.nc.uslsu/bnlp forms.htm). Per
NCAC 2B 15A: 02H.1000, a "drainage area" is defined as "the entire area
contributing surface runoff to a single point."