WQ0009772_More Information Requested_20141020

A A&
RCDENR
� • C! r ,��r � � • It • r � �
-Pat McCrory John ESkvarla, 111
Governor Secretary
October 20, 2014
MARTIN LASHUA — REGIONAL DIRECTOR
CAROLINA WATER SERVICE, INC. OF NORTH CAROLINA
POST OFFICE BOX 240908
CHARLOTTE, NORTH CAROLINA 28224-0908
Subject: Application No. WQ0009772
Additional Information Request #2
Monteray Shores WWTP
High -Rate Infiltration System
Currituck County
Dear Mr. Lashua:
Division of Water Resources' Central and Regional staff has reviewed the additional information package
received September 18, 2014. However, additional information is required before the review may be
completed. Please address the items on the following page no later than the close of business on
November 19, 2014.
Please be aware that you are responsible for meeting all requirements set forth in North Carolina rules and
regulations. Any oversights that occurred in the review of the subject application package are still the
Applicant's responsibility. In addition, any omissions made in responding to the outstanding items, or
failure to provide the additional information on or before the above requested date may result in your
application being returned as incomplete.
Please reference the subject application number when providing the requested information. All revised
and/or additional documentation shall be signed, sealed and dated (where needed), with three copies
submitted to my attention at the address below.
If you have any questions regarding this request, please do not hesitate to contact me at [phone] or
nathaniel.thomburga,ncdenr.gov. Thank you for your cooperation.
Sincerely,
Nathaniel Thornburg, Engineer
Division of Water Resources
cc: Randy Sipe — Washington Regional Office, Water Quality Regional Operations Section
Robert G. Burgin, Jr., PE — Burgin Engineering, Inc. (PO Box 1804, Irmo, SC 29063)
Permit Application File WQO0O9772
1636 Mail Service Center, Raleigh, North Carolina 27699-1636
Phone: [phone] Internet: http://portal.ncdenr.org/web/wg
An Equal Opportunity 1 Affirmative Action Employer— Made in part with recycled paper

Mr. Martin Lashua
October 20, 2014
Page 2 of 2
1. Please amend Application Item VH.9.b. to include the correct high -rate infiltration basin surface area
at the freeboard water elevation.
2. Please complete the Applicant's Certification on Page 13 of the resubmitted High -Rate Infiltration
System Application (FORM: HRIS 11-13).
3. As requested in the July 18, 2014 additional information letter, per Application Instruction I, please
submit two 11 x 17 -inch plan sets that have been signed, sealed and dated by a North Carolina
licensed Professional Engineer. Please ensure that these plan sets include the September 8, 2014
revisions.
4. Please address the following concerns regarding the proposed green area:
a. The comment response and/or Sheet C-800 did not include any documentation that the Permittee
has access rights to the proposed additional green area. According to the Currituck County GIS,
the northwest portion of the proposed green area is owned by Currituck County. Please provide
documentation of access for the proposed green area
b. Per 15A NCAC 02H .0404(g)(7), the designated green area to be suitable for waste disposal.
Based on a comparison of Sheet C-800 to aerial photographs, the proposed green area contains
several ponds, a canal, and a marina, as well as areas what appear to be wetlands. Also, in some
locations the proposed green area appears to be shown to extend off the shoreline'west into the
sound. Please remove these areas from the proposed green area, and amend the plans and
application accordingly.
c. Per 15A NCAC 02H .0404(g)(7), the use of streets and roadways as green area are prohibited.
Plan Sheet C-800 shows streets, driveways, and parking lots included in the proposed green area.
Please remove these areas from the proposed green area, and amend the plans and application
accordingly.
d. Plan Sheet C-800 identifies some portions of the proposed green area as existing irrigation areas.
Please clarify this designation, and amend the plans and application if necessary.
5. In the Hydrogeologist's letter included in the additional information package, it is recommended that
the upper portion of sand from the infiltration basin be removed and replaced this fall. Also, the notes
for the profile view of the basin, shown on revised Plan Sheet C-802, state that the upper 2 feet of
sand will be removed and replaced. Meanwhile, the comment responses for the Operation and
Maintenance Plan propose future inspection and possible maintenance of the basin, there is no
mention of any proposed work in the near future. Please amend the Operation and Maintenance Plan
to clarify the short term and long term maintenance plans for the high -rate infiltration basins.
6. The ;flow allocation spreadsheet included in the additional information package shows different
amounts of flow available to Outer Banks Ventures. Specifically, on one line this flow is given as
176;496 GPD, and on another line it is given as 186,496 GPD. Please clarify the actual amount of the
flow allocation for Outer Banks Ventures.