NC0061719_Woodlake Dam_20100108

ATA
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Land Resources
Land Quality Section
James D. Simons, PG, PE Beverly Eaves Perdue, Governor
Director and State Geologist . Dee Freeman, Secretary
January 8, 2010
Woodlake Partners Limited Partnership
c/o Mr. Gregory Dean Blevins, Woodlake Dam Operator
150 Woodlake Boulevard
Vass, North Carolina 28394
RE: Woodlake Dam
Moore County
MOORE-040 H
Cape Fear River Basin
Dear Mr. Blevins:
DER-F RO
f WQ
A review has been made of the project status report, dated October 19, 2009 received by this office on
October 22, 2009 for the referenced dam. We concur with the phased recommendations outlined in this
report by Mr. B. Dan Marks, PhD, PE, based upon a Notice of Deficiency dated February 12, 2009.
In accordance with my letter of October 22, 2009, the items listed below may be performed as maintenance.
Further submission'of plans or specifications for this work will not be required. The work may proceed as
proposed.
1. _ Replacement or repair of the wooden access bridge to the original bottom drain intake
structure.
2. Removal of woody vegetative growth on the upstream embankment slope. Once the
vegetation is removed, the riprap wave protection must be repaired and maintained.
The following proposed work must be designed by a North Carolina professional engineer. The engineer
must submit plans, specifications and design data, and secure approval prior to beginning construction
activities:
1. As noted in the report, "the concrete spillway structure is in need of significant remediation to
upgrade the performance and integrity of the structure."
2. Replacement of spillway walkway and gate lifting mechanisms. The gates must remain
operable during this process. Operation of the gates prior to and during significant storm
events approaching the spillway design storm is critical to safe operations and performance of
the dam.
1612 Mail Service Center, Raleigh, North Carolina 27699-1612 • Telephone [phone] / FAX: [phone]
512 North Salisbury Street, Raleigh, North Carolina, 27604 • Internet:http://www.dlr.enr.state.nc.us/pages/landqualitysection.html

Mr. Gregory Dean Blevins
Woodlake Dam
January 8, 2010
Page 2 of 2
Before beginning repair work on the referenced dam, 2 sets of plans and specifications for repair work to
the spillway must be filed with the Division of Land Resources for approval pursuant to Title 15A,
Subchapter 2K of the North Carolina Administrative Code. Each phase of the repair work may be
submitted separately for approval pursuant to a proposed time line for each phase of work.
Additional improvements noted in a report dated June 18, 1999 by S&ME, Inc. were recommended to be
"completed in the next phase of repairs." These repairs included:
1. Repair of deteriorated concrete in vicinity of sluice gates.
2. Fill in depression approximately 40 feet left of chute.
3. Repair damaged concrete by protecting and/or replacing slab surface.
4. Repair sluice gates, i.e. deteriorated metal and gaskets.
Final Approval of the repairs made in 1999 was contingent upon these additional items being completed "in
the near future." At this time, repair plans for all items pertinent to the safe operation of this dam must be
included in the submittal for approval. These items were confirmed during an inspection by Land Quality
staff on January 6, 2010.
Also, there is no record that the Woodlake Dam has an Operation and Maintenance Plan (OMP) or an
Emergency Action Plan (EAP) on file with this office. These items were included as stipulations of the
Approval to Repair dated August 17, 1988. The OMP & EAP are pertinent to the safe operation of this
dam and will be required to be submitted prior to final approval of any necessary repairs at this time.
Without proper operation of all ten gates, the spillway systems combined do not meet minimum criteria for
the required spillway design storm, and may overtop the dam.
Please contact Mr. Steve Cook, Regional Engineer; at telephone number [phone] or me at telephone
number [phone] should you have any questions concerning this matter. We look forward to
receiving final design documents from you.
Sincerely,
teven M. McEvoy, P
State Dam Safety Engi
Land Quality Section
cc: Mr. Steve Cook, Land Quality Regional Engineer
Mr. B. Dan Marks,_PhD, PE
DWQ Regional Supery sor i``
File Name: MOORE-040 20100108 PDR Woodlake Dam