20030570 Ver 5_Staff Comments_20130712

Strickland, Bev
From:
Lucas, Annette
Sent:
Friday, July 12, 201310:03 AM
To:
Smith, Cherri L
Cc:
Strickland, Bev
Subject:
03- 0570v5 Ligon Mill Extension — Level Spreaders 2 &3 — CONDITION
Attachments:
03- 0570v5 Ligon Mill Extension — Level Spreaders 2 &3 — CONDITION.docx
Cherri,
Diffuse flow condition attached,
Thanks,
Annette
Annette M. Lucas, PE
Environmental Engineer
NCDENR I DWQ I Wetlands and Stormwater Branch
1650 Mail Service Center, Raleigh, NC 27699 -1650 Nlailj
512 N. Salisbury St, Raleigh, NC 27604 1 9, Floor (Location & :Panel,
Phone: [phone] Fax: [phone] Email: Ann (, tt, U11,
Website; http:// portal.ncdenr.org/web /wg/swp/ws /401
Before printing this email, please consider your budget and the environment.
E -mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties.

03- 0570v5 Ligon Mill Extension — Level Spreaders 2 &3 — CONDITION
AML comments
July 12, 2013
1. Diffuse Flow Plan ADDroval by the Division
The Division approves the diffuse flow plan consisting of two level spreaders and all associated
stormwater conveyances, inlet and outlet structures, and the grading and drainage patterns
depicted on plan sheets dated July 16, 2008, which are incorporated by reference and are
enforceable by the Division. The following conditions also apply:
a) The maximum allowable drainage area for Level Spreader 2 shall be 88,862 square feet and the
maximum allowable built -upon area within that drainage area shall be 35,284 square feet. The
maximum allowable drainage area for Level Spreader 3 shall be 108,900 square feet and the
maximum allowable built -upon area within that drainage area shall be 37,026 square feet. Any
changes to these maximum areas shall require the applicant to submit and receive approval for
a revised stormwater management plan by the Division.
b) The footprint of all diffuse flow devices as well as an additional 10 -foot wide area on all sides of
the devices shall be located in either public rights -of -way, dedicated common areas or recorded
easement areas. The final plats for the project showing all such rights -of -way, common areas
and easement areas shall be in accordance with the approved plans.
c) The approved diffuse flow plan shall be constructed and operational before any permanent
building or other structure is occupied at the site.
d) The diffuse flow plan may not be modified without prior written authorization from the Division.
A copy of the approval letter and the modified SMP shall be submitted to the DWQ Webscape
Unit prior to the commencement of the modifications.
e) Maintenance activities for the level spreaders shall be performed in accordance with the
notarized O &M agreements signed by Eric Keravuori (Town Engineer, Town of Wake Forest) on
July 2, 2013. The O &M agreement shall transfer with the sale of the land or transfer of
ownership /responsibility for the BMP facility. The Division shall be notified promptly of every
transfer.
f) The applicant and /or authorized agent shall provide a completed Certificate of Completion form
to the Division within thirty (30) days of project completion (available at
http: / /porta I. ncden r.org/ web /wq /swp /ws/ 401 /certsa nd perm its /apply /forms).