20130412 Ver 1_More Info Received_20140718

Strickland, Bev
From: Kulz, Eric
Sent: Friday, July 18, 2014 2:58 PM
To: Strickland, Bev
Subject: FW: [EXTERNAL] Fwd: Hoosier (UNCLASSIFIED)
Attachments: Hoosier Supplemental Data Collection and Monitoring Plan.pdf
13 -0412
- - - -- Original Message---- -
From: Tugwell, Todd SAW [ mailto :Todd.Tugwell @usace.army.mil]
Sent: Friday, July 18, 2014 2:43 PM
To: Williams, Andrew E SAW; Fritz Rohde (Fritz. Rohde @noaa.gov); Chapman, Amy; Baker, Virginia; Beter, Dale E SAW;
Biddlecome, William J SAW; bowers.todd @epa.gov; Crumbley, Tyler SAW; Karoly, Cyndi; Cox, David R.;
Emily Jernigan @fws.gov; Kulz, Eric; Gibby, Jean B SAW; Greer, Emily C SAW; Jones, Scott SAW; Higgins, Karen;
Kathryn Matthews @fws.gov; Kichefski, Steven L SAW; McLendon, Scott C SAW; Sol lod, Steve; Sugg, Mickey T SAW;
Wilson, Travis W.; Wheeler, Tracey L SAW; Wicker, Henry M JR SAW
Cc: John Hutton; Robin.Wiebler @noaa.gov; Pete beniamin @fws.gov; Bryant, Shari L.; Sarah Mcrae
(sarah.mcrae @ncmail.net); Gledhill- earley, Renee; Hall, Dolores
Subject: FW: [EXTERNAL] Fwd: Hoosier (UNCLASSIFIED)
Classification: UNCLASSIFIED
Caveats: NONE
All,
Per the message below, I am forwarding the attached information for those of you planning to participate in the Hoosier
Dam discussion scheduled for the IRT meeting next Tuesday afternoon. We plan to start discussion on this topic at 1
PM.
Thanks,
Todd Tugwell
Special Projects Manager
Wilmington District, US Army Corps of Engineers
11405 Falls of the Neuse Road
Wake Forest, NC 27587
Office: 919 - 846 -2564
Mobile: 919 - 710 -0240
- - - -- Original Message---- -
From: Jernigan, Emily [mailto:emily iernian @fws.ov]
Sent: Friday, July 18, 2014 2:18 PM
To: Tugwell, Todd SAW
Subject: [EXTERNAL] Fwd: Hoosier
Todd,

As discussed earlier, attached is the document from John Hutton that needs to be shared with the IRT prior to our
Tuesday meeting. Thanks for sending this out to the IRT members today.
Thank you!
Emily
---- - - - - -- Forwarded message ---- - - - - --
From: John Hutton <Ihutton @wildlandseng.com>
Date: Fri, Jul 18, 2014 at 11:52 AM
Subject: Hoosier
To: " emily iernian @fws.ov" < emily iernian @fws.ov>
Cc: Angela Allen <aallen @wildlandseng.com>
Emily,
The supplemental data collection and monitoring plan is attached. This document provides a draft of additional baseline
data collection as well as post restoration monitoring and performance standards. I appreciate you sending it out to the
IRT. We will bring additional copies to the meeting on Tuesday.
Thanks
John Hutton I Vice President
0:919.851.9986 x102 M: 919.723.8203
Wildlands Engineering, Inc. <http: / /www.wildlandseng.com />
312 West Millbrook Road, Suite 225
Raleigh, NC 27609
Fil

Emily Jernigan
U.S. Fish and Wildlife Service
PO Box 33726
Raleigh, NC 27363 -3726
(919) 856 -4520 ext. 25
Classification: UNCLASSIFIED
Caveats: NONE

I � 0 1 ir..n.� iro d a d :: i 0 ir..n
The Bank Sponsor, 130 of Chatham, LLC, proposes to establish the Hoosier Dam Umbrella Mitigation Bank
(Bank) to provide compensatory stream mitigation credits to offset unavoidable impacts to jurisdictional
streams authorized under Sections 401 and 404 of the Clean Water Act and Section 10 of the Rivers and
Harbor Act. The proposed Bank site is located on the Rocky River in Chatham County approximately 5
miles upstream of its confluence with the Deep River in Hydrologic Unit 03030003 (Figure 1). The Bank
shall be planned and designed by Wildlands Engineering, Inc. ( Wildlands) and Unique Places, LLC as an
umbrella bank, with the initial bank site encompassing the area of the Hoosier Dam and a significant length
of Rocky River and several tributaries upstream of the current dam.
The Hoosier Dam impounds approximately 16,060 feet of Rocky River (also known as Reeves Lake) and
portions of six perennial tributary streams. The U.S. Fish & Wildlife Service (FWS) has designated sections
of the Rocky River upstream and downstream from Hoosier Dam, as well as a section of Bear Creek just
below the dam, as Critical Habitat for the Cape Fear shiner (Notropis mekistocholas), a federally listed
endangered species (FWS, 1988). The free - flowing /unimpounded sections of the Rocky River and Bear
Creek exhibit very high quality riverine habitat that supports a diverse collection of aquatic species
including the Cape Fear shiner and other species of concern, such as the Eastern creekshell (Villosa
delumbis) and the Carolina creekshell (Villosa vaughaniana) . The dam represents a significant blockage
to aquatic species' migration and as a result, FWS has documented declines in the disconnected Cape Fear
shiner population upstream of the dam (FWS, 1988). Removal of the blockage created by the dam to
provide access to these high - quality reaches would be of substantial long -term benefit to aquatic
communities including the Cape Fear shiner.
The overall objectives of the removal of the Hoosier Dam and restoration of Rocky River and its tributaries
are to
(1) Restore the Hoosier Dam /Reeves Lake impoundment to a lotic ecosystem, providing habitat that
supports an appropriate aquatic community.
(2) Facilitate restoration activities that promote re- colonization of the currently impounded section
of the Rocky River by rare, threatened and endangered species, specifically the Cape Fear shiner.
(3) Improve water quality in the Rocky River by reducing thermal stratification and increasing
dissolved oxygen levels.
10 arnii�::ariiirig I)Ila;nirn
The monitoring plan has been designed to evaluate the success of the Hoosier Dam removal in meeting
the project objectives. It includes baseline monitoring and post - removal monitoring to be conducted
annually for five years or until success criteria are met, whichever occurs first. Monitoring reports will be
submitted to USACE by December 1St of each monitoring year and made available to other members of
the Interagency Review Team (IRT). The monitoring plan structure is based on previous dam removal
projects (Carbonton Dam, Lowell Dam, and Milburnie Dam) and the 2008 guidelines for achieving
compensatory mitigation credit from dam removals published by the NC IRT (2008). The monitoring plan
will be finalized in coordination with the IRT prior to submission of the Mitigation Plan.

The primary objectives of the monitoring plan are to:
(1) Determine if an appropriate lotic aquatic community has been re- established in the Lake Reaves
impoundment;
(2) Determine if rare, threatened and endangered species have recolonized the impoundment,
specifically the Cape Fear shiner; and
(3) Determine if thermal stratification is reduced and dissolved oxygen levels have improved.
2.1. BaseIIiiirre Monitoring
2.1.1 Geomorphology
In order to establish baseline geomorphic conditions and the extent of the impoundment upstream of
Hoosier Dam, 20 cross - sections (spaced 600 -1,000 ft apart) have been surveyed along the Rocky River.
These include one section above the impoundment and three sections below Hoosier Dam to be used as
reference conditions. Cross - sections were taken at existing FEMA modeling locations so they could be
utilized to model pre - removal conditions in HEC -RAS. Of the 20 cross - sections, seven will become
permanent sections to be monitored annually post -dam removal.
Cross - sections will also be surveyed on Tributaries 2, 3, 4, and 6 where restoration credits are requested.
These will be placed approximately 25 bankfull widths apart and will be used as permanent cross - sections
for monitoring post -dam removal. The baseline cross sections will serve as a basis for comparison to post
restoration cross sections to verify geomorphic stability.
Velocity measurements have been taken at reference cross - sections upstream of the impoundment and
below the Hoosier Dam using a digital water velocity meter. Measurements were taken at two ft
increments at the cross - sections upstream of the impoundment and four ft increments at wide cross -
sections downstream of dam. At each increment, a velocity measurement was taken at 60% of the water
depth. The reference velocity measurements will serve as a basis for comparison to post restoration
measurements within the currently impounded sections of the Rocky River to verify a return to lotic
conditions.
2.1.2 Water Quality
Local water quality data within the project reach of the Rocky River is not available from federal or state
agencies. Therefore, Wildlands performed an assessment of water quality in Reeves Lake and in the Rocky
River upstream and downstream of the Hoosier Dam between July 15th 2013 and September 6, 2013. This
assessment of water quality was focused on establishing a better understanding of (1) the baseline water
quality in the Rocky River and Reeves Lake, (2) the extent that Reeves Lake may be acting as a source or
sink for pollutants (primarily sediment and nutrients), and (3) the extent to which temperature and
dissolved oxygen (DO) stratification occurs in the impoundment.
To develop a better understanding of the effect Reeves Lake may have on the water quality of the Rocky
River and downstream water bodies, two ISCO Brand water samplers were installed: (1) the Upstream
Station was located upstream of the impoundment approximately 350 feet east of the bridge at Pittsboro
Goldston Rd, and (2) the Downstream Station was located approximately 350 ft downstream of Hoosier
Dam. The two ISCO samplers collected a water sample every four hours, four days a week between July
15, 2013 and September 6, 2013. A total of 72 water quality samples collected at each station were tested

for Total Suspended Solids (TSS), Nitrate ( NO3 -), Ammonium (NH4'), Total Kjeldahl Nitrogen (TKN),
Phosphate (PO4' -), Total Phosphorus (TP) and Total Dissolved Nitrogen (TDN).
All data from samples were separated into two groups by station (Upstream or Downstream) for analysis.
The data populations were then analyzed using a 2- tailed T -test to determine if they were significantly
different from one another (p < 0.05, n =72).
On six dates during the summer of 2013 (7/11/2013, 7/25/2013, 8/2/2013, 8/15/2013, 8/30/2013,
9/6/2013) temperature and DO profiles were measured in Reeves Lake. Each variable was measured for
every foot of depth at a location approximately 100 feet upstream of the Hoosier Dam. Such profiles give
an indication of the extent of thermal stratification in Reeves Lake, a condition known to negatively affect
river - adapted aquatic life.
Results of baseline water quality monitoring have been presented in the Mitigation Bank Prospectus and
will be included in the Mitigation Plan.
2.1.3 Sediment Characterization
Wildlands performed an initial survey of sediment quantity in July 2013. Water depths over 22 feet were
found along the historic alignment of the Rocky River in Reeves Lake for a distance of approximately 1500
feet upstream of the Hoosier Dam. Depths ranging from 15 feet to less than 3 feet were found across the
historic floodplain of the river within the existing impoundment. The crest elevation of the dam is 25 ft
above the thalweg elevation of the stream. A comparison of this preliminary data to the dam height
appears to indicate that extensive sedimentation above Hoosier Dam has not occurred.
To further evaluate sediment Wildlands will perform a detailed bathymetric survey of the impoundment
to determine the extent, character, and depths of sediment upstream of the dam. This will be used to
determine the total quantity of impounded sediment as well as the portion of this that is likely to be
mobilized upon dam removal. Wildlands will perform a sediment characterization to estimate the portion
of fines vs. coarse - grained sediment on a subset of seven of the existing cross - sections surveyed. At cross -
sections where the water is safely wadeable, a Wolman pebble count or sieve analysis will be completed
(depending on the coarseness of substrate). At cross - sections where the water is deep, substrate will be
sampled using a petite -Ponar dredge. Samples will then be classified using a Wolman pebble count or
sieve analysis as appropriate.
Wildlands will also engage staff with the FWS to develop a Tier 1 sediment quality assessment, which
includes a review of impounded sediment character and extent (as described above) and potential sources
of contamination in the contributing watershed. If the Tier 1 review finds that there is potential for
contaminated sediment within the impoundment, a Tier 2 analysis (toxicity testing) will be performed.
This information (mobile sediment load, sediment characterization, estimates of background sediment
load, and findings of the Tier 1 and 2 if conducted), and the sensitivity of downstream aquatic
communities, will inform the Draft Sediment Management Plan that will be submitted to the IRT for
approval. The Sediment Management Plan will be developed such that the risk of short -term impacts to
sensitive aquatic communities downstream is minimized, and long -term impacts are avoided altogether.
2.1.4 Aquatic Community Sampling
Aquatic community biologic sampling will be completed at four lotic stations located outside of the
impoundment (two upstream of the impoundment and two downstream of Hoosier Dam) and seven
sections within the impoundment. The data collected from these stations will be used to establish local

reference conditions to evaluate the project success post dam - removal. Biologic sampling will consist of
fish community sampling, mussel and snail sampling, macroinvertebrate sampling, and habitat
assessment.
Fish community sampling will be conducted in the fall of 2014 by The Catena Group or Alderman
Environmental Services. Fish sampling reaches will be located around two cross - sections upstream of the
impoundment, two cross - sections downstream of the impoundment, and two cross - sections within the
impoundment. Sampling reaches will be between 200 and 400 meters and will be completed using a
combination of Seine nets and dip nets in shallow riffle areas and electrofishing in deep pool areas in order
to sample various habitats. This will establish baseline data on the lotic fish community surrounding the
impoundment.
Mussel /snail and macroinvertebrate sampling will be completed in the fall of 2014 at 11 of the 20 cross -
sections surveyed in the existing conditions assessment. Two sections will be located above the
impoundment and two below Hoosier Dam. This sampling will establish a baseline condition from which
to map the departure of species from lentic to lotic within the impoundment.
Habitat evaluation will be performed at the seven cross - sections located within the impoundment in order
to characterize habitat availability for rare, threatened and endangered species. This will be done using
the NCDWR Habitat Assessment protocol.
2.2 Ainirru..a4I Monitoring Post Darr) RennovaII
2.2.1 Geomorphologic Monitoring
The geomorphology of Rocky River and its tributaries will transform post -dam removal as the river
transitions from a lentic to a lotic system. Geomorphic monitoring will be conducted annually to
characterize that transformation and highlight the development of lotic habitat within the previously
impounded reach. Monitoring activities will include geomorphic feature classification (e.g riffle, pool, run,
glide), a total station survey (or appropriate survey technique for the water level post- dam removal),
stream velocity measurements, sediment characterization, and NCDWR Habitat Assessment protocol.
Permanent cross - sections will be established along the length of Rocky River and tributaries where
mitigation credits are requested. Cross - sections will be spaced approximately 25 bankfull widths apart
and will be permanently marked with rebar on each bank. The bank pins will be georeferenced with a
handheld GPS unit to aid in location each monitoring year. Cross - sections locations will be selected after
dewatering of the impoundment in order to include an array of geomorphic features (e.g. riffle, pool, run,
glide). If possible, cross - sections will be located at sections used for baseline monitoring. Cross - sections
will serve as a permanent geomorphic and biologic monitoring station.
Stream Reach
# Geomorphic Monitoring Stations
Rocky River
7
Tributary 2
4
Tributary 3
4
Tributary 4
5
Tributary 6
2

A geomorphic survey will be completed at each monitoring station annually on the tributaries and in
monitoring years one and five on the mainstem using an appropriate survey technique based on the depth
of water. Each station will be referenced by its location and geomorphic feature (e.g. riffle, run, pool, and
glide). Results will be used to track the stability of each cross - section and the development of habitat
features across the width of the channel (e.g. micropools, riffles, undercut banks) post- dam removal.
Stream velocity measurements will be taken in coordination with geomorphic surveys at each monitoring
station to evaluate aquatic habitat suitability for lotic species as well as sediment transport. Inasmuch as
possible, measurements will be taken at comparable discharges at each cross - section each year. A digital
water velocity meter will be used to record velocity measurements at evenly spaced intervals. For water
depths less than 2.5 ft, measurement will be taken at 60% of the water depth. For water depths greater
than 2.5 ft, measurements will be taken at 20% and 60% of the water depth.
Substrate in the Rocky River and its tributaries is expected to coarsen post- dam removal as the alteration
in hydraulics will facilitate flushing of fines. This coarsened material will provide enhanced habitat for a
lotic aquatic community. Substrate monitoring will be conducted annually at monitoring stations to track
the coarsening of substrate over time. At cross - sections where the water is safely wadeable, a Wolman
pebble count or sieve analysis will be completed (depending on the coarseness of substrate). At cross -
sections where the water is deep, substrate will be sampled using a petite -Ponar dredge. Samples will
then be classified using a Wolman pebble count or sieve analysis.
In addition to the survey, velocity measurements, and substrate analysis a NCDWQ Habitat Assessment
will be performed at each cross - section. This will be used in conjunction with the aquatic community
sampling to determine if an environment suitable for lotic aquatic organisms is developing post -dam
removal.
Success criteria for geomorphic monitoring along restoration reaches of Rocky River and its tributaries
includes the following:
(a) Progression from a homogenous lentic waterway towards a geomorphically heterogeneous
lotic system including the establishment of riffle, pools, runs and glides.
(b) Demonstration of stable channel geometry.
(c) Coarsening of the stream substrate in the previously impounded reaches as indication of the
establishment of lotic habitat.
(d) Increase in NCDWR stream habitat scores.
2.2.2 Aquatic Biological Community Sampling
Aquatic biological community sampling will be completed to trackthe establishment of lotic species within
the previously impounded reaches of Rocky River and its tributaries. It will also be completed to track the
re- colonization of rare, threatened and endangered species, specifically the Cape Fear shiner. Sampling
will be conducted at permanent biological monitoring stations located within the previously impounded
reaches of Rocky River and its tributaries as well as at two reference stations upstream of the
impoundment and two downstream of the Hoosier Dam. All stations will be located on riffles /runs,
however surveys will be conducted an adequate distance up- and down - stream from the station to
capture a variety of habitat types. Biological monitoring stations may be re- located during the monitoring
years if geomorphic shifts occur and the previous years' sampling station is no longer located on a

riffle /run. Of the seven potential monitoring stations within the impoundment of the Rocky River, the
ones with the best potential for the redevelopment of Cape Fear shiner habitat will be chosen for
sampling.
Stream Reach
# Biological Monitoring Stations
Rocky River
11 Total: 2 upstream of previous impoundment, 2 downstream of
Hoosier Dam, potentially 7 within restoration reach
Tributary 2
1
Tributary 3
1
Tributary 4
1
Tributary 6
1
Macroinvertebrates sampling will be conducted annually at each biological monitoring station by the
Catena Group or Alderman Environmental Services and will follow the NCDWR's Standard Qualitative
method. Results will be analyzed for relative abundance of Ephemeroptera, Plecoptera and Trichoptera
taxa (EPT) as well as total benthic taxa. Mussel and snail community sampling will be completed in years
four and five, as it has been shown that the re- colonization process takes longer for these communities
post -dam removal.
Fish surveys will be conducted annually by the Catena Group or Alderman Environmental Services at each
biological monitoring station following dam - removal. Survey reaches will extend up to 200m on either
side of the monitoring station in order to assess a variety of habitat niches from an array of geomorphic
features. A combination of electrofishing and seine netting /dip netting will be used as appropriate to
sample various habitat features along the reach. NCIBI methods may be used in certain conditions.
Inasmuch as is possible, surveys will be completed under similar conditions (time of year, flow rate,
turbidity) at the biological monitoring stations in order to generate species - specific "Catch Per Unit Effort"
(CPUE) data sets.
Biological sampling from the reference monitoring stations will be used to evaluate success. A sampling
station will be considered successful if monitoring values for that station converge with or exceed
reference station values. Success criteria for Aquatic Biological Community Sampling along restoration
reaches of Rocky River and its tributaries includes the following:
(a) Establishment of a range of lotic- adapted fish, mussels, snails and macroinvertebrates.
(b) Increases in class size distribution (from juvenile to adult post -dam removal), relative abundance
as indicated by CPUE, distribution and occupancy of available habitat, and species diversity of
freshwater fish.
(c) An increase in relative abundance and species diversity of macroinve rte brates, snails and mussels.
2.2.3 Rare, Threatened and Endangered Species Re- colonization.
Cape Fear shiner and additional rare, threatened and endangered species identified during baseline
aquatic biological community monitoring will be monitored for re- colonization. This monitoring will be
conducted annually by The Catena Group or Alderman Environmental Services during the aquatic
biological community sampling. Both companies hold appropriate permits to conduct population surveys
for sensitive and protected species.

Success criteria for rare, threatened and endangered species re- colonization along restoration reaches of
Rocky River and its tributaries includes the following:
(a) Increase in appropriate habitat for Cape Fear shiner or other species identified during baseline
monitoring.
(b) Increase in presence /abundance of known associate species of the Cape Fear shiner or other
species identified during baseline monitoring.
(c) Increase in presence /abundance of Cape Fear shiner or other species identified in the baseline
monitoring.
2.2.4 Water Quality Monitoring
Water quality improvement in the restoration reach of Rocky River is expected post -dam removal.
Dewatering the impoundment and removing Hoosier Dam should reduce thermal stratification and
increase dissolved oxygen levels in the water column. The improvement in water quality is expected to
facilitate the re- colonization of lotic aquatic species within the previously impounded reaches.
Water quality monitoring will include temperature and dissolved oxygen. Wildlands will use a YSI meter
to sample temperature and dissolved oxygen along the mainstem at the seven previously mentioned
permanent sampling stations within the currently impounded reach. Wildlands will use the same
sampling protocol at the monitoring stations upstream of the impoundment and downstream of the dam
for comparison. Temperature and dissolved oxygen at the sampling stations within the tributaries as well.
Samples will be taken seasonally during each monitoring year to account for variations in temperature
and dissolved oxygen as well as to thoroughly document the progressive alteration in water quality post -
dam removal. Inasmuch as possible, samples will be taken under similar conditions (e.g. temperature and
discharge).
Macroinvertebrate sampling, as discussed in the Aquatic Biological Community Sampling, will be used as
an indicator for water quality in addition to the water temperature and chemistry sampling.
Success criteria for Water Quality Sampling along restoration reaches of Rocky River and its tributaries
includes the following:
(a) Reduction in thermal and dissolved oxygen stratification along the previously impounded reaches
of Rocky River and its tributaries
(b) Improvement in benthic biotic indices scores (decrease = improvement)

WTLDLANDS
E N G IN E E R I N G
312 W. Millbrook Road, Suite 225
Raleigh, NC 27609
Tel: [phone]
Finn License No. F -0831
Date:
07-17-2014
Job Number:
005 -14005
Project Engineer:
ANA
Drawn B
y'
ANA
Checked By:
JH
HOOSIER DAM REMOVAL
BIOLOGICAL MONITORING LOCATIONS