20060659 Ver 1_Staff Comments_20080117

06-0659 Trenton Road SD
AML comments
January 17, 2008
1. The filter strip for the level spreader located at the outlet of FES 40 appears to be
too steep to allow for diffuse flow based on the incomplete topographic lines
depicted on Figure 3. Please EITHER relocate the level spreader to a location
with appropriate slopes in the filter strip OR provide a BMP that removes 30 or
more percent of the nutrients rather than using a level spreader. If you choose to
provide a BMP, please provide a DWQ BMP Supplement Form with all required
items. BMP Supplement Forms are available on the following web site:
http:/lh2o.enz-.state.nc.us/su/bmp_fotms.htm.
2. For the proposed dry detention pond and the other two proposed level spreaders,
please provide an up to date DWQ BMP Supplement Form with all required items
so that the DWQ may review those designs (available on the web site above).