20120432 Ver 1_Staff Comments_20120524

Leucas, Annette
From Lucas Annette
Sent Thursday May 24 2012 3 21 PM
To Witherspoon Lauren
Cc Lucas Annette
Subject 12 X412 SGWSA WWTP Imprnvement,,
Attachments 12 0432 SGWSA WWTP Improvements docx
Lauren
A hold bullet is attached It looks like they need a stormwater plan
Thanks
Annette
Annette M Lucas PE
Environmental Engineer
NCDENR I DWQ I Wetlands and Stormwater Branch
1650 Mail Service Center Raleigh NC 27699 1650 (Mail)
512 N Salisbury St Raleigh NC 27604 1 9u' Floor (Location & Parcels)
Phone [phone] Fax [phone] Email Annette Lucas6�),ncdenr gov
Website http / /portal ncdenrorg/web/wq/swp/ws/401
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12 0432 SGWSA WWTP Improvements
AML comments
May 24 2012
1 It appears that this site may be over 24% impervious and that a piped storm drainage system has
been used Please either
a Provide evidence showing that this protect meets all of the requirements for low density
development found in Appendix A of General Condition 3890 available at
http //portal ncdenr org/c /document librar /get file'?uuid= 9e7c74e6 1036 44dd b70f
8e93e7ef6fbe &groupId =38364
b Provide a Stormwater Management Plan that removes a minimum of 85 percent TSS and
30 percent TN and TP from the stormwater generated by this project For each proposed
BMP please provide a completed BMP Supplement Form with all the required items
The BMP Supplement Forms are available at the following web site
http //portal ncdenr org/web/wq/ws/su/bmp manual