20050150 Ver 2_More Info Received_20080506

Town of Holly Springs-Green Oaks Parkway, Corps ID# 20060193, DWQ#2005-0150 v3 Page 1 of 1
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From: [e-mail]
Date: May 6, 2008 17:35
To: <[e-mail]. mil>, <[e-mail]>
Cc: <[e-mail]>, <[e-mail]>
Subject: Town of Holly Springs-Green Oaks Parkway, Corps ID# 20060193,
DWQ#2005-0150 v3
Attachments: Green Oaks Parkway - REVISED Construction
Sequence 04-21-08.pdf (15 KB)
5-5-08 013.jpg (1953 KB)
Cyndi/Monte-
The compliance/restoration construction per the amended 401 and USACE-authorized activities to resolve the
404/401 violations at Green Oaks Parkway continue and have made progress.
The contractors are currently working on headwall construction and backfill, and grade control structures/stream
stabilization in the section of Green Oaks Parkway near New Hill Road (Crossings 1, 2, and 3). Attached are
pictures of the completed upstream section of Crossing 1.
In order to accommodate the multiple crews working in the limited areas of these headwalls within the limits of
disturbance, S&EC has revised the construction sequence for implementing the compliance measures
(attached). .
We will continue to document progress and notify you when crossings/segments are completed. Please feel free
to give me a call should you have any questions or need additional information.
Thanks,
Chad
Chad Evenhouse, PWS
Kimley-Horn and Associates, Inc.
PO Box 33068
Raleigh, NC 27636-3068
Ph: 919-677-2121 Fax: [phone]
Chad. Evenhouse@kimley-horn. com
https: //webmail.ncmail.net/cp/ps/MailNiewMsgController?d=ncmail.net&contentSeed=155... 5/9/2008
Green Oaks Parkway - Construction Sequence Alternates
REVISED - April 22, 2008
The following Construction Sequence Alternates are intended to provide general sequencing
guidance for the remaining headwall construction and proposed stream, wetland and buffer
restoration (repair and stabilization) measures for a series of six culvert crossings along the
Green Oaks Parkway in Holly Springs, NC.
One of two general conditions currently exists at each end (upstream and downstream) of each
of the crossing locations;
A) Headwall Already Constructed & Restoration Remaining, or
Applies to: Crossing #3 Upstream and Downstream
Crossing #5 Upstream Only
Crossing #6 Upstream Only
Crossing #7 Downstream Only
B) Both Headwall Construction & Restoration Remaining
Applies to: Crossing #1 Upstream and Downstream
Crossing #2 Upstream and Downstream
Crossing #5 Downstream Only
Crossing #6 Downstream Only
Crossing #7 Upstream Only
The following general Construction Sequences shall apply at all locations:
1. Confirm required Limits of Disturbance (LOD) with representatives of the Town of
Holly Springs (TOHS), Wakefield Development, Fowler Contracting, and Soil &
Environmental Consultants, PA (S&EC) (performed on January 28, 2008).
2. Surveyors to re-stake remaining headwall foundations as needed (and directed by
Wakefield). Fowler and Wakefield to confirm headwall staking and coordinate any
modifications in LOD's with S&EC prior to installation of tree protection fencing.
S&EC to notify TOHS of LOD changes.
Fowler to install tree protection fence along newly defined LOD's. Fowler to relocate
(or install new) silt fencing, riprap & gravel checkdams, and other necessary sediment
control devices as deemed necessary.
4. S&EC to inspect installed tree protection fence and sediment control devices for
conformance with LOD's and with design intent, and provide additional
recommendations to Fowler as needed.
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S&EC to provide written confirmation to TOHS that LOD's are in general accordance
with those limits described in the Repair & Stabilization Plan approved by USACE
and DWQ.
Depending on local conditions Sequence A or Sequence B will be followed.
A) If Headwall Alreadv Constructed & Restoration Remaining then:
6A. Fowler to backfill around footings (pump out standing water as needed).
7A. EDGE Development to perform local stream, wetland and buffer restoration. S&EC
to provide on-site construction observation as required throughout the duration of
construction. S&EC to provide necessary guidance/modifications to repairs based on
site conditions encountered during construction. EDGE to stabilize restoration areas
(seeding, mulching, matting, and planting). S&EC to approve local work upon
completion.
8A. Fowler (and where appropriate EDGE) to reinstall local temporary sediment control
devices upon completion of local construction activities. S&EC to notify TOHS and
Wakefield of the completion of local construction activities. EDGE moves to next
restoration location.
B) If Both Headwall Construction & Restoration Remaining then:
6B. Fowler to spray paint (or otherwise mark) footer locations and stake out permanent
impacts. Fowler (or their surveyor) to certify that footing and headwall are located as
shown on plans.
7B. Fowler to excavate for headwall footings, construct formwork and pour concrete
footings. Remove formwork.
8B. Fowler to construct headwall formwork and pour concrete headwall. Fowler to
backfill headwall and stabilize surrounding slopes. Fowler (or their surveyor) to
certify that footing and headwall were constructed as shown on the plans.
9B. EDGE to perform local stream, wetland and buffer restoration. S&EC to provide on-
site construction observation as required throughout the duration of construction.
S&EC to provide necessary guidance/modifications to repairs based on site conditions
encountered during construction. EDGE to stabilize restoration areas (seeding,
mulching, matting, and planting). S&EC to approve local work upon completion.
I OB. Fowler (and where appropriate EDGE) to reinstall local temporary sediment control
devices upon completion of local construction activities. S&EC to notify TOHS and
Wakefield of the completion of local construction activities. Fowler moves to next
restoration location.
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NOTES:
1. Construction shall be performed in an upstream to downstream direction at each
crossing location unless otherwise approved by S&EC based on site conditions.
2. S&EC shall provide weekly updates to TOHS and Wakefield outlining the progress of
construction.
3. Planting operations including the installation of livestakes, trees and shrubs may be
delayed until all restoration activities have been completed and weather conditions are
suitable for plant installation. Such delays are in concert with planting efforts described
in the approved Stabilization and Repair Plan.
4. S&EC to prepare Certificate of Completion for restoration efforts for submittal to
USACE and DWQ upon completion of work.
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