20141310 Ver 2_Correspondence_20210519

Strickland, Bev
From: Alexander Elkan <[e-mail]>
Sent: Wednesday, May 19, 2021 10:40 AM
To: [e-mail]
Cc: Homewood, Sue; Pete Goria; Bob Zarzecki; Patrick K Smith Smith
Subject: [External] mcconnell center
Attachments: McConnell Center - Proposed Wetland Contours - 05-18-2021.pdf
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Hello David —
Following up on our discussion Monday, Mr. Goria proposes to complete the restoration work in accordance with the
attached schematic and below grading parameters.
We ask that at your earliest convenience you please review and confirm or let us know of any proposed revisions. Once
approved by USACE, Mr. Goria intends to immediately proceed to carry out the work.
Thank you.
PROPOSED GRADING OPERATIONS:
1. Surveyor to install grading stakes at roughly 30 foot (+/-) intervals to define the
proposed contour lines shown on the attached sketch map. Stakes to be
labeled with proposed final grade elevation and depth of cut. Surveyor will
remove Photo Point stakes for reinstallation later. Other remaining stakes
(from previous work) will be removed prior to staking.
2. Contractor to determine means and methods of grading. However, based on
expected wetness at depth (observed in test pits) grading will likely be
performed in a generally east to west direction working from the edge of water
to the existing 708.00 contour.
NOTE: If excessively wet conditions are encountered during grading such
that heavy equipment cannot operate or other conditions indicating
further cut is not necessary (ie. stumps or buried vegetation indicating the
old pond bed) we will notify USACE and DWR with proposed modifications
this plan. Visible, sizeable debris (concrete, tires, etc.) will be removed.
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3. North and east boundaries of wetland restoration area will be graded such that
there is a transition of slopes from below the existing water surface (where
present) to the adjacent restored wetland surface.
4. Perform perimeter grading so as to limit open water within newly graded
wetland area (assume average water surface at approx. Elev. 705.50').
5. Reasonable efforts will be made to limit disturbance of existing stable vegetated
slopes along south and west edge of restored wetland area. However, one or
more access paths down slope will be required.
6. Grading will be undertaken along the toe of the existing upland slope (along
south and west edge of restored wetland) with a goal of establishing stable
transition slopes to wetland surface. Where practicable, slopes will be graded
to 2H:1V or flatter but steeper slopes may result in certain areas due to existing
contours. Efforts will be made to grade to the contours described on the
attached sketch map to the extent practicable, however contours at toe of slope
may be adjusted during grading based on field conditions.
7. Removed clean fill will be stockpiled or graded elsewhere in upland areas on
site and stabilized in a manner consistent with erosion control practices.
8. Visible, sizeable rubble, debris, and trash at the surface of the final graded
restored wetland surface will be removed and disposed of.
9. Following the completion of grading activities, surveyor to reinstall Photo Points
at their respective original locations and install elevation benchmark pins (for
contour elevations shown on map) along toe of upland slope. If practicable,
similar elevation benchmarks will be installed along north edge of wetland
(however, pedestrian access may be limited).
10. Meet on site with USACE (and DWR if desired) to review final site grading and
comparison with benchmark elevations prior to seeding.
11. Once grading is completed and approved by USACE, stabilize wetland surface
per Wetland Restoration Notes and Planting Plan described on Wetland
Restoration Plan (Sheet ESH WL 3). If necessary, erosion control matting may be
installed on steeper slope areas.
Alex
2

Alexander Elkan, Partner
BROOKS
U PIERCE
FOUNDED 1897
t: 336.271.3134
336.232.9034
2000 Renaissance Plaza
230 North Elm Street
Greensboro, NC 27401
P.O. Box 26000 (27420)
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I - PHOTO POINTS PNT# I , PNT#2 AND PNT#3
ARE MARKED WITH STEEL T-POSTS (PAINTED
ORANGE FOR EA5E OF LOCATION).
2, THE LOCATION Of PHOTO POINTS WERE
SURVEYED AND DEPICTED ON THE A5-BUILT
SURVEY MAP (SY OTHERS).
3. THE DIRECTIONAL ORIENTATION of PHOTO
POINT5 ARE APPROXIMATE AND INTEND
FOR REPRESENTATION PURPOSES ONLY
INTENDED
Figure 5 - Photo Points Map
S&EC Project No. 13795. D2
Lot 9 McConnell Center
Wetland Restoration As -Built Report
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