HomeMy WebLinkAbout20061166 Ver 1_Monitoring Report_20110121ASCOM
AECOM 919.872.6600 tel
8540 Colonnade Center Drive Suite 306 919.872.7996 fax
Raleigh, NC 27615
LP - I ? U LD
Letter of Transmittal
Attention: Cyndi Karoly
City of Raleigh Former Pond
Area Restoration, Neuse River
Project reference: Wastewater Treatment Plant Project number: 60138732.0017
We are sending you the following:
Number of originals: Number of copies: Description:
1 2010 Former Farm Pond Area Annual Monitoring Report
Date: January 19, 2011
On behalf of the City of Raleigh Public Utilities Department, AECOM is pleased to submit the 2010
annual monitoring report for the restoration of the 2 former pond areas at the Neuse River
Wastewater Treatment Plant in Raleigh, NC.
Annual monitoring of the two former pond sites was performed as required by the U.S. Army Corps
of Engineers and NC Division of Water Quality for a period of five years. This is the fifth and final
annual monitoring report. No further action is recommended at this time.
We look forward to your review and concurrence.
Sincerely,
Peter M. Th au, Ph.D., P.G., P.H.
rem.
JAAI
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Program Manager
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,x Environment Prepared for:
City of Raleigh Public Utilities Dept
Raleigh, North Carolina
Former Farm Pond Area Annual
Monitoring Report
Prepared by:
AECOM
Raleigh, NC
60138732.0016
January 2011
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JAN 2 1 2011
MR-WATEROJA D
SMIDSTnRJft*RW.WH
A=COM Environment Prepared for:
City of Raleigh Public Utilities Dept
Raleigh, North Carolina
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Former Farm Pond Area Annual
Monitoring Report
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Prep ed By
Jennifer Cassada, Senior Staff Specialist
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Rev ewed By
Peter M.Thibod au, Ph.D., PG, PH
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Prepared by:
AECOM
Raleigh, NC
60138732.0016
January2011
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AECOM Environment ii
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List of Figures
Figure 1 Site Location Map
Figure 2 Cody's Pond As-Built Survey
Figure 3 Pond #1 As-Built Survey
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January 2011
AECOM
Environment
1-1
1 1.0 Introduction
L
' The City of Raleigh Public Utilities Department (CORPUD) performed fill removal and site restoration
activities associated with former farm ponds identified as Cody's Pond and Pond #1 at the Neuse
River Waste Water Treatment Plant (NRWWTP), Raleigh, North Carolina (Figure 1) (the Site).
AECOM provided planning and technical oversight for the fill removal and site restoration activities as
well as the required annual monitoring. This report contains the results of the fifth and final annual
monitoring of the restored streams.
The restored streams are located in the southern portion of the Site, among agricultural fields (Figure
1). The 1.1-acre former Cody's Pond was decommissioned in 1996 and partially back-filled with soil
and construction/demolition (C/D) debris. Portions of the earthen dam remained in place, and the pre-
existing intermittent stream continued to flow through the area. The 1.5-acre former Pond #1 was
decommissioned prior to 1993 and subsequently partially back-filled with Class A biosolids, soil, and
C/D debris. The former farm pond areas are surrounded by a rolling topography that support crop
' fields and interspersed brush and woodland areas.
Fill removal activities consisted generally of soil and fill characterization, material segregation, off-site
' disposal, site re-grading, and establishment of vegetation in the excavated and disturbed areas about
the Cody's Pond and Pond #1 project sites. Additional work included the replacement of a culvert and
stream crossing at the Cody's Pond site and re-establishment of the drainage channel at the Pond #1
site. Following excavation, each site was re-graded in accordance with the approved Restoration
' Plan, and then seeded with a native grass seed mix and tree species.
The riparian buffers were planted to a width of at least fifty feet on each side of the channel. The
' plantings at the Cody's Pond site included a mesic mixed hardwood forest zone and a headwater
forest zone. The planting plan for the Pond #1 site includes a mesic hardwood forest zone. Planting
at the two sites was performed in December 2005 by CORPUD staff. Additional trees were planted in
' January 2009 at both sites.
Annual surveys are being conducted as required by the U.S. Army Corps of Engineers (Corps) and
North Carolina Division of Environment and Natural Resources - Division of Water Quality (NCDWQ).
' Data have been collected and submitted to the Corps and NCDWQ each year at the same general
time of the year for five years (2006 - 2010) following construction. Yearly monitoring includes
reference photos and evaluations of channel stability, and plant survival. As-built surveys (Figures 2
' and 3) and the first annual monitoring were conducted in 2006. The second, third, and fourth annual
monitoring events were conducted in August 2007, August 2008, and August 2009 respectively.
Permanent cross-sections were established at the time of the as-built surveys to be used as
' representative segments of the streams.
January 2011
AECOM
Environment
2-1
' 2.0 Ongoing Monitoring Activities
1
AECOM visited the site on July 15, 2010 to perform the annual survey for 2010.
2.1 Cody's Pond Site
' The natural vegetated buffer was maintained in the upstream section, west of the culvert, throughout
the fill removal and site restoration process. The remainder of the buffer area along the restored
stream section was planted with a 50-foot wide vegetative buffer including mostly various grasses and
several species of trees and shrubs. The species were selected to mimic natural headwater stream
forests (i.e., black gum, sycamore, poplar) near the channel and mesic mixed hardwood forests (i.e.,
oaks, hickories, beech, elm) on the upper slopes. Additional trees, 100 black gum (Nyssa sylvatica)
' and 100 southern red oak (Quercus falcata), were planted in January 2009 as supplemental plantings.
Representative photographs were taken at each of the established cross-sections (Appendix A). The
stream appears to be stable and vegetation is established within the channel, along the banks and
' within the buffer zone.
Dominant herbaceous vegetation within the buffer zone included broomsedge (Andropogon
' virginicus), lespedeza (Lespedeza sp.), horseweed (Conyza canadensis), and various grasses.
Scattered throughout the buffer zone are the trees that were planted in December 2005 and January
2009; some volunteer trees were also noted, growing along with the trees planted in the buffer zone..
' Species represented include sycamore (Plantanus occidentalis), loblolly pine (Pinus taeda), tulip
poplar (Liriodendron tulipifera), sweet gum (Liquidambar styraciflua), southern red oak (Quercus
falcata), and black gum (Nyssa sylvatica).
' Non-dominants in the buffer zone include tag alder (Alnus serrulata), common ragweed (Ambrosia
artemisiifolia), pokeberry (Phytolacca americana), dewberry (Rubus flagellaris), blackberry (Rubus
argutus), and winged sumac (Rhus copallina).
' Vegetation on the banks and within the stream channel was dominated by rice cutgrass (Leersia
oryzoides), jewelweed (Impatiens capensis), tag alder, stilt-grass (Microstegium vimineum), and false
' nettle (Boehemeria cylindrica). Non-dominants in this area included soft rush (Juncus effusus),
common ragweed, various grasses, mimosa (Albizia julibrissen), pokeweed, honeysuckle (Lonicera
japonica), princess tree (Paulownia tomentosa), Chinese privet (Ligustrum sinense), and multiflora
' rose (Rosa multiflora).
2.2 Pond #1 Site
' The former Pond #1 site was restored to a headwater stream with a small wetland within the area of
the former pond. The restored stream was designed to approximate the dimension and profile of the
stream that likely existed before the pond was created and later filled. It is a low gradient stream with
shallow banks and fringing wetland areas.
' Representative photographs were taken at each of the established cross-sections (Appendix A). The
stream appears to be stable and vegetation is established within the channel, along the banks and
within the buffer zone.
January 2011
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AECOM
Environment
The natural vegetated buffer was maintained in the upstream section of the stream that marked the
edge of fill removal and construction activities. This area was expanded and the remainder of the
stream section was planted to include a 50-foot wide vegetative buffer. Species were selected to
mimic natural headwater stream forests (i.e., black gum, sycamore, poplar). Additional trees, 300
black gum and 100 southern red oak, were planted in January 2009.
2-2
Vegetation within the buffer area was dominated by horseweed (Conyza canadense), blackberry
(Rubus argutus), various grasses, Japanese honeysuckle (Lonicera japonica), and lespedeza
(Lespedeza sp.). Non-dominants in the area included soft rush, willow (Salix nigra), beaksedge
(Rhynchospora spp.), dog fennel (Eupatorium capillifolium), and multiflora rose (Rosa multiflora).
Scattered throughout the buffer zone are the trees and shrubs that were planted in 2005 and 2009
including the following species: redbud (Cercis canadensis), sycamore, arrow-wood (Vibernum
dentatum), green ash (Fraxinus pennsylvanica), willow oak (Quercus phellos), sugarberry (Celtis
laevigata), American elm (Ulmus americana), tulip poplar (Liriodendron tulipifera), southern red oak,
and black gum.
Vegetation on the banks and within the stream channel was dominated by cattail (Typha latifolia),
smartweed (Polygonum sp.), tearthumb (Polygonum sagittatum), sedges (Carex sp.), rushes (Juncus
sp.), climbing hempweed (Mikania scandens), and false nettle (Boehemeria cylindrica). Non-
dominants in the area included tag alder, boneset (Eupatorium perfoliatum), duck potato (Sagittaria
sp.), bulrush (Scirpus sp.), partridge pea (Chamaecrista fasciculata), black willow (Salix nigra), curly
dock (Rumex crispus), and blackberry.
Vegetation within the wetland area near cross-section 4 was dominated by cattails and soft rush with
bulrush, smartweed, curly dock, false nettle, and sedges non-dominant.
January 2011
AECOM Environment 3-1
3.0 Conclusion
Both of the restored streams appear to be in stable condition. Vegetation within the buffers as well as
on the banks of the streams and within the stream channels is well-established and consistent with
other streams in the area.
Annual monitoring of the two former pond sites was performed as required by the Corps and NCDWQ
for a period of five years. This is the fifth and final annual monitoring event. No further action is
recommended at this time.
January 2011
I AECOM Environment
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Map Location Neuse River Wastewater Treatment Plant N Figure 1
KY "!? va Former Cody's Pond and Former Pond #1
Image Source: USGS Topographic Quadrangles AZ CO,M
TN Clayton, NC and Garner, NC
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8540 Colonnade Center Drive, Suite 306
Raleigh, NC 27615
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AECOM Environment
Appendix A
1
Monitoring Survey
' Photographs
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January 2011
AECOM Environment 1
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Photo 2 - Overview of Cross Section 1 - Former Cody's Pond - View to the northwest across the
stream.
January 2011
Photo 1 - Overview of Former Cody's Pond. View to the north.
AECOM
Environment 2
Photo 3 - Cross Section 1 - Former Cody's Pond. View across the stream (northwest).
January 2011
Photo 4 - Cross Section 1 - Former Cody's Pond - View upstream (southwest).
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AECOM
Environment
Photo 5 - Cross Section 1 - Former Cody's Pond. View downstream (northeast).
Photo 6 - Overview of Cross Section 2 - Former Cody's Pond - View to the northwest across the
stream.
3
' January 2011
AECOM Environment 4
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Photo 7 - Cross Section 2 - Former Cody's Pond - View across the stream (northwest).
January 2011
Photo 8 - Cross Section 2 - Former Cody's Pond. View upstream (southwest).
AECOM Environment 5
Photo 9 - Cross Section 2 - Former Cody's Pond - View downstream (northeast).
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Photo 10 - Overview of Cross Section 3 - Former Cody's Pond. View northwest across the stream.
January 2011
AECOM Environment 6
Photo 11 - Cross Section 3 - Former Cody's Pond - View across the stream (northwest).
January 2011
AECOM Environment 7
Photo 13 - Cross Section 3 - Former Cody's Pond - View downstream (northeast).
P;
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Photo 14 - Overview of downstream section of stream - Former Cody's Pond. View northeast from the
road crossing.
January 2011
AECOM
Environment g
I it c y- - . may, f.
Photo 15 - Overview of upstream section of stream - Former Cody's Pond - View southwest from the
road crossing.
January 2011
AECOM Environment g
x
Photo 16 - Overview of Former Pond 1. View to the southwest.
Photo 17 - Overview of Cross Section 1 - Former Pond 1 - View to the southeast across the stream.
January 2011
AECOM Environment 10
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Photo 18 -Cross Section 1 - Former Pond 1 - View across the stream.
January 2011
Photo 19 - Cross Section 1 - Former Pond 1. View upstream (northeast).
AECOM Environment 11
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Photo 20 - Cross Section 1 - Former Pond 1 - View downstream (southwest).
Photo 21 - Overview of Cross Section 2 - Former Pond 1. View northwest across the stream.
January 2011
AECOM
Environment 12
Photo 22 - Cross Section 2 - Former Pond 1 - View across the stream (southeast).
January 2011
Photo 23 -Cross Section 2 - Former Pond 1. View upstream (northeast)
AECOM Environment 13
Photo 25 - Overview of Cross Section 3 - Former Pond 1. View northwest across the stream.
January 2011
Photo 24 - Cross Section 2 - Former Pond 1 - View downstream (southwest).
AECOM
Environment 14
Photo 26 - Cross Section 3 - Former Pond 1 - View across the stream (southeast).
January 2011
Photo 27 - Cross Section 3 - Former Pond 1 - View upstream (northeast).
AECOM Environment 15
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Photo 29 - Overview of Cross Section 4 - Former Pond 1. View northwest across the stream.
January 2011
Photo 28 - Cross Section 3 - Former Pond 1 - View downstream (southwest).
AECOM
Environment 16
January 2011
Photo 30 - Cross Section 4 - Former Pond 1 - View across the stream.
Photo 31 -Cross Section 4 - Former Pond 1. View upstream (northeast).
AECOM Environment 17
Photo 33 - Overview of Cross Section 5 - Former Pond 1. View northwest across the stream.
4P
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Q
January 2011
Photo 32 - Cross Section 4 - Former Pond 1 - View downstream (southwest).
AECOM Environment 18
Photo 34 - Cross Section 5 - Former Pond 1 - View across the stream (southeast).
January 2011
Photo 35 -Cross Section 5 - Former Pond 1. View upstream (northeast).
I AECOM Environment 19
January 2011
Photo 36 - Cross Section 5 - Former Pond 1 - View downstream (southwest).