20090204 Ver 1_More Info Letter_20090416

C A
NCQENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director
April 16, 2009
Western Carolina University
Wiley Harris, Director of Facilities Planning Design and Construction
3476 Old Cullowhee Rd
Cullowhee, NC 28723
Subject: Request for More Information
401 Water Quality Certification
Millennial Initiative Project
DWQ Project # 09-0204
Jackson County
Response deadline: May 22, 2009
REQUEST FOR MORE INFORMATION
Dear Mr. Harris:
Dee Freeman
Secretary
The Division of Water Quality (DWQ) has performed a preliminary review of a 401 Water Quality Certification
application submitted for the above referenced property. Additional information will be required in order to
complete the review process.
Please provide the following information so that we may continue to review your project.
Additional Information Requested:
Please locate all wetlands, streams, and other waters of the State as overlays on the site plan, or a
note on the plans that states that none exist. Wetlands and streams were indicated on Figure 2 of
the aerial photo supplied. The plans did not clearly indicate water features. Also, during a site
visit by DWQ there appeared to be more wetland areas within the project area than indicated on
the aerial photo supplied.
Please provide an 8t/2 x 11 inch copy of the NRCS County Soils map with the project location
shown.
Please provide a legend on the plans submitted, as certain symbols were not clearly identified in
the drawings.
4. Please indicate whether or not the proposed impacts have already been conducted. During the
DWQ site visit the large field at the southeast corner as indicated on Figure 2 in the aerial photo
Location: 2090 U.S. Highway 70, Swannanoa, North Carolina 28778
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748
Internet: www ncwaterquality.org
An Equal Opportunity i Affirmative Action Employer
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Western Carolina University
April 16, 2009
Page 2 of 3
has been filled and graded. DWQ representatives were told this area would be used by the Fire
Department as additional parking. Parking would be considered an impervious area and will
need a stormwater control installed.
Please provide cross section details showing the provisions for aquatic life passage. The cross
section typicals supplied were hard to read. A cross section of the culvert to be installed is
needed for review.
6. Provide one BMP Supplement Form for each proposed BMP and Required Items Checklist
(http://h2o.enr.state.nc.us/su/bmp forms.htm) along with all required items. Some of the items
listed on the Required Items Checklist that were omitted include:
a. A delineation of all drainage areas. It appears that the majority of the site will drain to the
sand filter trenches, with the exception of the north and east cut slope drain, and a very small
portion of the south roof drains will drain to the bioretention pond.
b. On-site soil borings at the location of the proposed BMPs.
c. A planting plan for the proposed biorention cell.
d. Design calculation sheets for all proposed BMP(s) sized for both on-site and off-site
drainage. Supporting calculations must be signed, dated and sealed
e. A notarized Operation & Maintenance Agreement for each BMP.
7. The supplement forms provided, Plans D-1.06, and sheets Form S W401-Sand Filter appear to
conflict. Are the sand filter trenches open or closed designs? Most of the stormwater appears to
be piped to these trenches, but it is unclear if the trenches are designed for piped stormwater or
just overland flow stormwater.
8. Please provide calculations to show that the outlet velocity will achieve a non-erosive velocity of
two feet per second or less for the peak flow from the 10-year storm. The outlet structure for the
sand filter trenches is receiving a large area of re-concentrated flows.
9. A Finding of No Significant Impact (FONSI) will need to be received through the State Clearing
House prior to issuance of the 401 Certification.
Please provide your response in writing to the addresses below prior to May 22, 2009. Four copies of the
required information should be provided to the 401 Permitting Unit at:
Ms. Cyndi Karoly
401 Permitting Unit
1650 Mail Service Center
Raleigh, NC 27699-1650
„Western Carolina University
April 16, 2009
Page 3 of '3
and a single copy to the Asheville Regional Office at:
Ms. Linda Wiggs
Surface Water Protection Section
2090 US HWY 70
Swannanoa, NC 28778
If we do not hear from you by the deadline, we will assume that you no longer want to pursue this project and
we will consider the project withdrawn.
This letter only addresses the preliminary application review and does not authorize any impacts to wetlands,
waters or protected buffers. Please be aware that any impacts requested within your application are not
authorized (at this time) by the DWQ. Please call Linda Wiggs 828-296-4500, if you have any questions.
Sincerely,
Roger C. Edwards
Regional Office Supervisor
Surface Water Protection Section
cc: US Army Corps of Engineers Asheville Field Office
David McHenry - North Carolina Wildlife Resources Commission
Cyndi Karoly - 401 Permitting Unit
Jackson County Planning
ARO File copy
Central Files
Mulkey Inc.-Cindy Carr
PO Box 33127
Raleigh, NC 27636-3127
GIWPDATA\DEMWQ\Jackson\401 s\09-0204WCU-Add Info doc