SW1191201_Stormwater Narrative_20210818

Narrative
(Major Modifications in Red)
1. General Information
a. Project Name: DPS—North Carolina National Guard Morganton Regional Readiness Center,
Phase 11: New Construction
b. Address: 5155 Western Avenue, Morganton, NC
c. Total Site Area: 536.44 Acres (Parcel Area), 35 acres (Site Area)
d. Disturbed Area: 34.33 Acres
e. Wetland Area: 0 Acres (there are no wetlands onsite).
f. Jurisdictional Streams and Stream Buffers: There is one jurisdictional stream on the property
to the north of the site. There will be no impacts to the stream or stream buffer due to this
project.
g. Ownership: North Carolina National Guard
h. Proposed Development: The North Carolina National Guard plans to construct a Regional
Readiness Center (RRC) on the site of the former Dept of Corrections Western Youth
Correctional Institution. The proposed project includes demolition of the existing buildings and
construction of the RRC to be occupied by four National Guard units.
This site was originally permitted to treat the BUA with a single wet pond SCM located in the
northwest of the site. The wet pond was also designed and permitted to overtreat future
expansion areas noted in the permitted plans. During Construction, the owner decided to
change the future helipad area (on the east side of the site) to an expanded motor pool
parking area.
The revision results in an increase in impervious area beyond what was originally permitted.
To capture and treat this additional impervious area, a second wet pond SCM is added at the
south east corner of the site.
In the original permit, this area was outside the drainage and treatment areas for the
permitted wet pond and changes associated with this major modification do not impact that
wet pond.
Phasing:
• This project includes two complete and separate "phases" which are publicly bid
and constructed separately.
• Phase I of the project included the relocation of existing Department of
Corrections buildings to the CRV Correctional facility just south of the site of which
Land Disturbance Permit BURKE 2019-012 was issued on March 14, 2019 (see
attached). Construction of Phase I is underway and will be complete in February
2020 prior to beginning this project / Phase 11).
• This project / Phase 11 will be bid in February 2020 after complete close out of
Phase I project; Construction for Phase II is planned to begin February 2020
and end August 2021). — Construction is currently underway
Existing Land Disturbance Permit (Phase I project): BURKE 2019-012 / Express Review
Existing Land Disturbance Permit (Phase 11 project): BURKE 2020-013
k. Existing Stormwater Permit: SW1191201
I. NCDEQ Compliance Issues: None.
m. Water & Sewer Service: This project will utilize water and sewer services through the City of
Morganton.
n. Historic Sites: N/A This is not a historic site and there are no historic features on this site.
o. Public Funding This project is being funded through the state Connect NC Bond through the
North Carolina National Guard.

p. FEMA FIRM # 3710270000J, dated September 5, 2007 indicates that the site is outside the
limits the 100-year flood plain.
q. Soils on the site consist of predominately FaB, FaC, FaD (Fairview sandy clay loam) and Ur
(Urban land).
r. Pre -development BUA (On -Site): 5.41-ac
s. Post -development BUA (On -Site): 18.45-ac