19990971 Ver 1_COMPLETE FILE_19990919

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Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
John C. Vilas 2/17/05
E'nv Environmental Consulting Services
3764 Rominger Rd
Banner Elk, NC 28604
Subject: Planting Plan approval for Kerner Ridge Project (DWQ # 99-0971, Watauga County)
Dear Mr. Vilas:
Thank-you for your interest in reviving the Kerner Ridge project. Your willingness to use a
variety of species, as well as using larger, container grown trees is to be commended. Absent
from the plan was a commitment to periodically check on the trees and water them if they appear
stressed. Such a commitment should be included in the final plan for this project.
If you have any questions regarding this plan, please contact Larry Eaton at [phone].
Sincerely,
A
PnDmey
etlands/401 Unit
DWQ
21 Crabtree Blvd
sleigh, NC 27604
CC File copy
DWQ Winston-Salem Regional Office
Central Files
401 Wetlands Certification Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604
Phone: [phone] / FAX [phone] / Internet: http://h2o.enr.state.nc.us/ncwetlands
Nose Carolina
Ntura!!y
An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper
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North Carolina Department of Environment and Natural Resources
Division of Water Quality
Michael F. Easley, Governor
September 29, 2004
MEMO
TO: John Vilas
E'nV Environmental Consulting Firm
FROM: John Dorn
RE: Stream mitigation plan f erner Ridge Development (aka
Review of Year Three report
DWQ # 99-0971
Watauga County
William G. Ross, Jr., Secretary
Alan W. Klimek, P.E., Director
Trillium Residential)
DWQ staff have reviewed the Year Three monitdring report for this project and have
visited the site on several occasions over the past year. The Division has been and continues
to be pleased with the progress on this stream restoration\Site and indeed, we have used it as
an example for several training classes. However, the Division has two main issues with
respect to the mitigation report and site. These issues must.. be addressed in order to keep this
project in compliance with the 401 Certification issued on July 17, 2000.
1. The lack of woody vegetation is becoming very evident along portions of the stream
mitigation site and must be addressed this fall in order for this project to remain in
compliance. Given the amount of dense herbaceous growth in the area, we suggest
that containerized trees and shrubs be used since they will more likely to be able to
survive the strong competition from the grasses and herbs. We would be willing to
alter the number of woody plants to be planted accordingly if containerized plants are
chosen. Please provide a final planting plan and schedule for our written approval by
October 30, 2004.
2. The mitigation plan approved by DWQ required macrobenthos samples from the site
before and after the stream relocation for a five year period (during years 2, 3 and 4).
A review of our file shows that we apparently have not received these data. Please
either provide the data as required in the approved mitigation plan or provide a
written proposal to address this deficiency. Again please provide this information to.
us in writing by October 30, 2004.
can be reached at 919-733-9646 if you have any questions. Also please forward a
copy of this letter to your client since we do not appear to have the address of the current
owner.
Cc: Daryl Lamb, DWQ Winston-Salem Regional Office
Andrea Wade, Raleigh Field Office US Army Corps of Engineers
File copy
Central files
401 Wetlands Certification Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1650, One
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604 NofthCarohna
Phone: [phone] FAX [phone] / Internet: hlW://l12o.enr.state.nc.us/newetlands An Equal Opportunity/Affirmative Acton Employer - 50% Recycled/10% Post Consumer Paper Naturally
E'nV
August 31, 2004
Mr. John Domey
NC DENR DWQ
2321 Crabtree Blvd.
Parikview Building
Raleigh, NC 27604-2260
DWQ 97
RE: Kerner Ridge Demahmment
DWQ Proj 99097
Dear Mr. Domey:
1W.

3764 RominW Road
Banner Elk, NC 2$604
Ph1Fax: [phone]
e-mail: [e-mail]
WgLANI)S 401 GROUP
SEP 0 12004
WATER QUALITY SECTION
Enclosed is the year-3 monitoring report describing the stream and wetlands that were constructed for
Kerner Ridge Development. Also is included is the Monitoring Survey, as required in the 401 Permit.
The following items are included in the package:
1. Location Map
2. Monitoring write-up
3. Monitoring Project Plan View
4. Longitudinal Profile
5. Cross-sections
6. Pebble Count Plot
7. Vegetation Agent Map
8. Sampling Site Photo Sheet
If you have any questions regarding this information please call me at 828-297-6946, thank you.
Sincerely,
Joh C. Was
President, E'nV Environmental Consulting Services Inc.
CC: Jeff Dickerson
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Name: BOONE Location: 036° 11'52.4" N 061° 37'56.2" W
Date: 6/28/2004 Caption: Kemer Ridge Location Map
Scale: 1 inch equals 2000 Beet
Kerner Ridge Development
DWQ Project #990971
Stream Monitoring Survey
General:
The Trillium Residential Services project (#990971) has changed ownership and is now
referred to as Kerner Ridge Development. The stream relocation was completed in May
2001 and site development activities commenced immediately thereafter. Site work was
stopped in the fall of 2001 and the project remained dormant until the summer of 2004.
In January of 2003 E'nV Inc. was notified that the property had been sold. The new
owner is Mr. Jeff Dickerson with Kerner Ridge Development. As reported in the Year-2
report the new owners have re-initiated construction activities. Site work began in early
July 2004 and is on-going. All activities appear to be following the original plan and
appear to be in compliance with the Clean Water Act 404/401 permit requirements. This
Year-3 monitoring report will cover stream physical stability and vegetation
establishment. A table describing the project monitoring status and history follows:
Year Description

2001 Project Restoration/Relocation
completed in May

2001 As-Built Report submitted in
November
2002 Adjustment Period

2003 Year 2 Monitoring submitted in
August
2004 Year 3 Monitoring

2005 Year 4 Monitoring/Final Year as
required in CWA 401 Permit
Description of Work:
The project site is adjacentto the East Fork, a major tributary of the South Fork of the
New River located southeast of Boone, NC. The project involved the filling of
approximately 380 linear feet of UT-East Fork, a first order stream with a drainage area
of approximately 100 acres. A new channel of approximately 660 feet in length was
constructed to replace the existing channel. The channel was designed as an `B" channel
according to the criteria in "Applied River Morphology" (Rosgen, 1996). The work
involved the grading out of a broad floodplain through which the new channel was
excavated. The floodplain extends out from the bankfull elevation to provide a flood
prone area width 30 to 100 feet wide. Sod mats were grubbed on-site and used as the
primary method of bank stabilization through the entire length of the constructed channel.
Silky willow stakes were also planted in the immediate riparian areas while the
floodplain area were seeded. The channel was relocated to flow around the perimeter of
the site to facilitate construction of an assisted living facility.
Kerner Ridge Stream Monitoring
Survey Report 1 7/27/04
Year-3 Monitoring
Date Performed: 6/1/04
Site Observations:
Construction activities have commenced on site, currently grading and foundation work
is underway for the assisted living facility. The project will proceed in accordance with
the original plan. The stream corridor and pocket wetlands continue to mature and remain
well vegetated with a variety of facultative and obligate wetland species emerging (see
vegetation assessment). The site has yet to be planted with trees or shrubs beyond the
willows and other live stakes originally installed in the immediate riparian zone.
An unusually large volume of trash and debris from neighboring apartments and trailer
park areas continue to affect flow and aesthetics throughout the project reach. Trash items
present on the day of inspection included numerous full and empty garbage bags, loose
household garbage, construction debris, buckets, tires, and various other items. This
debris inhibited flow in places causing backwater and periodic overbank flow. The
created storm-water pocket wetlands continue to mature and should provide an adequate
biological filter when brought on-line after the project is completed.
The UT-East Fork watershed remains largely forested in the upper reaches with low
density development (single family homes) present primarily along Deerfield road and
higher density development (apartments and trailer park) just above the project reach.
The reach of UT-East Fork immediately above the project reach (middle reach) is
unstable with evidence of active bank erosion and channel migration in places. This reach
is narrow, steep and entrenched, it appears that this reach contributes a substantial
sediment load to the project reach during larger storms. Immediately above the middle
reach is the reference reach. This reach is a stable "B-channel" with a good buffer and no
visible bank erosion or other significant problems. According to the owners of the
reference reach, there has been some timber harvesting and clearing in the upper part of
the watershed. Apparently, during the November 2003 flood, there was significant
erosion in this area that washed a large quantity of sediment down the system and
through the project reach.
Stream Observations:
Since the 2003 monitoring survey the NW NC mountains have received substantial
flooding. On November 19, 2003, Boone, NC and the surrounding regions (Ashe, Avery,
Watauga Counties) received 4+inches of rain. The South Fork of the New River Gage
Station (USGS Sta#03161000) located in Jefferson, NC noted a flow of 6000+ cfs,
comparable to a mean daily streatnflow of approximately 360 cfs. The Kerner Ridge
project reach, located well upstream of the Jefferson gage station, appears to have
handled the floodwaters as designed with no notable bank or bed stability problems.
The stream evaluation performed for this report consisted of a complete longitudinal
profile survey, several cross sections, a classification pebble count, a riparian vegetation
assessment, and a general assessment of the stream corridor. Based on this evaluation the
stream is generally functioning in a stable manner. An examination of current and
Kerner Ridge Stream Monitoring
Survey Report 2 7/27/04
previous data indicates no significant changes in dimension, pattern or profile within the
reach. Two problem areas were noted in the 2003 monitoring report and both were
evaluated again this year.
Problem area 1 is located in the upper part of the project reach between station 1+40 and
1+75. In 2003, the channel in this area was reported to be undersized and dominated by
silt and sand. Based on an evaluation of current and previous cross section and profile
data there has not been any significant channel aggradation, lateral migration or other
noticeable changes in dimension, pattern or profile. The bed continues to be dominated
by sand and silt and there has been noticeable deposition on the banks. The riparian zone
within area 1 is dominated by high quality wetlands, which have benefited from the low
channel banks and frequent overbank flooding in this area. This area will continue to be
monitored but handled a large flood during the past year and appears stable.
Problem area 2 is located along the left bank of the lower project reach, near station
5+40. In 2003 this area was reported to be especially vulnerable to bank failure that might
be caused by overbank flooding and the lack of berm separating the channel from the
upper end of a storm-water pocket wetland. This area was also carefully evaluated during
the 2004 monitoring inspection and survey. Results of this evaluation found no
significant changes in bed or bank characteristics or other adverse changes to dimension,
pattern or profile in this area. In 2003, short term monitoring and a long term repair
strategy was proposed and that recommendation holds for 2004. With the ongoing
construction activity at the site it is anticipated that the recommended repairs in this area
will be completed in the near future.
The remainder of the restored reach appears to be in excellent condition with the
exception of the quantity of litter and trash visible. The measured profile and cross
sections show no significant changes from 2003 and riparian vegetation is thriving as are
wetland areas located throughout the project corridor.
Pebble Counts:
Numerous pebble counts have been performed on the project reach beginning in 1999.
The post-construction counts had shown a coarsening trend from silt to sand (D-50)
between the 2002 and 2003 counts and it was projected that this trend would continue
towards the pre-construction D-50 of 1.05mm. The 2004 count indicated a D-50 of
0.12mm, which is slightly finer than the 2003 D-50 of 0.17mm. Many of the riffles
throughout the reach have become coarse sand and gravel dominated but most pools
remain silty. While it is still felt that channel materials in UT-East Fork will continue to
trend towards the pre-construction value, it appears that the adjustment period,
particularly for pools will take some time.
Vegetation Assessment:
During project construction the banks of the new channel were stabilized with six to ten
inch thick sod-mats that were harvested on-site, these provided immediate bank stability.
All constructed (disturbed ground) areas were immediately sowed with temporary
ryegrass. Following construction,a landscape contractor was hired to continue planting of
Kerner Ridge Stream Monitoring 7/27/04
Survey Report 3
the restored reach. Seeding consisted of sowing all floodplain and riparian areas with a
FACW seed mix. Willow stakes were harvested on-site and planted in the sod mats at the
top of the stream bank throughout the Restored reach. During the 2004 growing season,
the entire project area was observed to be covered with thriving, mostly herbaceous
vegetation; Salix sericea dominates the banks of the lower reach.
Vegetation throughout the Restored reach was assessed on 6/25/04. Dominance was
determined based on approximate percent cover and frequency of occurrence. Dominant
vegetation had the highest percent cover within a given sample plot and occurred within
the most plots. Dominant species are listed in order with the most dominant species listed
first on the attached Kerner Ridge Riparian Vegetation Assessment sheet. The reach was
broken into 5 areas. Areas 1,4, and 5 occur upstream of the project culvert while areas 2
and 3 are downstream (see Vegetation Assessment map).
The riparian area of the Restored reach as a whole is nearly 100% vegetated. The channel
is well shaded in most areas during the growing season. Herbaceous and grass
communities appear to be growing uniformly through the reach; shrubs (primarily Salix
spp.) are nearly continuous along the channel banks in the lower section but nearly absent
in the upper section. FACW and OBL species such as Carex balieyi and Juncus q&sus
dominate the frequently flooded regions of the project reach with newly discovered
species such as Sparganium americanum emerging. Small Cornus amomum and Alnus
serrulata have also begun to emerge in the 2004 survey (see Vegetation Assessment
spreadsheet). It is recommended that riparian shrubs (Silky Willows, Tag Alders, Silky
Dogwood, and/or Elderberry) be replanted in the upper section when the remainder of the
required vegetation is planted.
Conclusions:
The relocated stream and associated floodplain areas appear to be functioning in a stable
manor with regard to dimension, pattern, and profile. Throughout the project reach
riparian wetlands border the channel with a variety of native FACW and OBL species
present. Wetland vegetation richness has increased since the 2003 Vegetation Assessment
with the emergence of new species noted in Vegetation Assessment Areas. Problem Area
1, although undersized, appears stable and frequently floods the adjacent wetlands,
supporting FACW-OBL wetland grass and herbaceous communities. Problem Area 2,
listed in the 2003 report, has become more densely vegetated and appears to have
stabilized over the past year showing little or no increase in erosion or other negative
effects from the November 2003 flood. All remedial actions suggested in this report have
been and will again be communicated to the owner who has indicated that all unfinished
actions and necessary repairs will be accomplished during the current construction.
Kerner Ridge Stream Monitoring 7/2'7/04
Survey Report 4
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Monitoring
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Kerner Ridge 2004 Riparian Vegetation Assessment

Area 1: Aster & Soli o Dominate
Dominant Grass 3 ies d
Indicator
Dominant Herb Species
indicator
Panicum clandestinum FAC Solid o spp. N/A
Juncus effusus FACW Aster spp. N/A
Carex tribuloides FACW+ lm aliens ca is FACW
Carex bat i OBL Onoclea sensibilis FACW

Dominant Shrub Species Other S ecies Observed
Alnus serrulata t2ft OBL Pol onum sa ittatum OBL
Comus amomum -2ft FACW Mentha cardiara FACW
Oenothera biennis FACU
Vemonia noveboracensis FAC
Eu atorium fistulosum FACW
Cal st is se ium FAC-
Carex vul inoidea OBL
Area 2: Salix Dominated
Dominant Grass Species
Indicator
Dominant Herb Specks
Indicator
Panicum clandestinum FAC Aster N/A
Phleum ratense FACU Solida o s pp. N/A
Juncus effusus FACW Vemonia noveboracensis FAC
Sci us cyperinus FACW+ Oenothera biennis FACU

Dominant Shrub Species Other Species Observed
Salix sericia OBL Clematis vir iniana FAC
Comus amomum FACW Impatiens capensis FACW
Carex tribuloides FACW

Area 3: Juncus dominated
Dominant Grass S ecies Indicator Dominant Herb Species Indicator
Juncus mar inatus FACW Trifolium ratense FACU
Juncus effusus FACW Oenothera biennis FACU
Sci us cypennus FACW+ (along fringe of wetland
_
Elocharis obtusa OBL
Other Species Observed
Dominant Shrub Species Carex tribuloides FACW+
Salix sericia OBL Carex balie i OBL
Comus amomum ~2ft FACW

t/o
Area 4: Dominated b emerge bate grasses
li
Dominant Grass species Indicator Dominant Herb Species Indicator
S ar anium americanum 001 Eu torium olatum FACW+
Juncus effusus FACW
Sci us G rinus FACW
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Area 5: JuncuslCarex Dominated
Dominant Grass SPOCIOS Indicator Dominant Herb Species indicator
Juncus effusus FACW Impatiens ca ensis FACW
Carex hibuloides FACW+ Ranuculus recurvatus FAC
Carex bails i OBL Onociea sensibilis FACW
Carex vu{ inoidea OBL

Dominant Shrub Species
Salix sericia OBL
Kerner Ridge Development Site
Photo Sheet 1
5/2004
Monitoring report)
Problem Area 1 (Sited in year 2
Upper Project Reach
Upstream Pocket wetland
Project Culvert
Kerner Ridge Development Site
Photo Sheet 2
5/2004
riparian area
by FACW/OBL wetland grasses.
Silky Willow dominated
Lower Project Reach
Densely vegetated Lower Project Reach
Downstream Pocket Wetland dominated
cA e d 7000
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August 19, 2003
Mr. Todd St. John
NC DENR DWQ
2321 Crabtree Blvd.
Parkview Building
Raleigh, NC 276042260
RE: Kerner Ridge Development
DWQ Project# 990971
Dear Todd:
3764 Rominger Road
Banner Elk, NC 28804
Ph/Far. 828-297-6946
e-mail: johnQenv-eos.com
F 47.
) AA,
LITERQUALITYSECTION
Enclosed is a report describing the stream and wetlands that were constructed for Kemer Ridge
Development. Also included is the Monitoring Survey, as required in the 401 Permit. The following
items are included in the package:
1. Location Map
2. Monitoring writeup
3. Longitudinal profile
4. Crowsections
5. Pebble Count
6. Vegetation assessment
if you have any questions regarding this information please call me at 828-297-6946, thank you.
Sincerely,
Z/ohnC.as
President, E'nV Environmental Consulting Services Inc.
CC: Jeff Dickerson
Kerner Ridge Development
DWQ Project #990971
Stream Monitoring Survey
General:
The Trillium Residential Services project (#990971) has changed ownership and is now
called Kerner Ridge Development. The stream relocation was completed in May 2001.
Over the next several months the site was prepared for the construction of the proposed
Assisted Living Facility. The development stopped at this point and the site has been
dormant since. In January of 2003 E'nV Inc. was notified that the property had been sold.
The new owner is Mr. Jeff Dickerson with Kerner Ridge Development. The site remains
undeveloped, although Mr. Dickerson has indicated his intension of completing the
development in accordance with the previously approved plans. This monitoring report
will cover stream physical stability and vegetation establishment. This is the year-2
report, the As-Built report was submitted in November of 2001.
Description of Work:
The project site is located at the edge of the floodplain for the East Fork, a major tributary
of the South Fork of the New River. Two small tributaries flow through the site, the
larger of these (drainage area =140 acres) flows parallel to Candy Lane along the
southern end of the site and was not impacted except for the immediate area of the tie-in
with the relocated channel. The other tributary drains approximately 100 acres and flows
through the middle of the site. This smaller tributary was relocated to flow around the
perimeter of the site to facilitate construction of an assisted living facility, which to date
has not been constructed.
The project involved the filling of approximately 380 linear feet of an existing stream
channel. A new charnel of approximately 660 feet in length was constructed to replace
the existing channel. The channel was designed as an "E" charnel according to the
criteria m "Applied River Morphology" (Rosgen, 1996). The work involved the grading
out of a broad floodplain through which the new channel was excavated. The floodplain
extends out from the bankfull elevation to provide a flood prone area width 30 to 100 feet
wide. The primary method of frank stabilization for the channel was six to ten inch thick
sod mats on the side slopes along both sides of the entire length of channel. The sod mats
were harvested from the project site. The floodplain area was seeded.
At the approximate midpoint of the proposed channel a culvert crossing was installed for
the entrance drive. A three-culvert system was installed; an approximate 36" by 24"
elliptic pipe was placed in the streambed to carry the bankfull discharge (approx. 20 cfs)
and two identical elliptic pipes were installed above and to the sides of the channel pipe
to carry flows in excess of bankfull.
Year-Two Monitoring
Date Performed: 4/22/03
Site Observations:
The site has yet to be developed beyond the stream relocation and installation of the
building pad. The stream. corridor and pocket wetlands remain. well vegetated with a
variety of wetland species (see vegetation assessment). The site has yet to be planted with
trees or shrubs beyond the willows and other live stakes in the immediate riparian zone.
When the site is developed, trees and shrubs will be planted.
Trash and debris from neighboring apartments and trailer park areas appears to affecting
flow through the upper part of the relocated channel, causing backwater and periodic
overbank flow. Created pocket wetlands appear to be stable with no stormwater currently
routed through them
Stream Observations:
The relocated channel appears to be functioning as designed. There is evidence that flows
have exceeded the channel banks on more than one occasion. The dimension, pattern, and
profile have remained mostly constant since the 9/01 survey (see attached longitudinal
profile and cross-sections). There are no major bank or bed stability problems within the
project reach. There are however two problem areas that should be monitored, one of
these is in the upper part of the channel (between stations 1+40 and 1+75) and the other is
in the lower part (near station 5+40).
Problem Area 1: There is one section (approximately 35 feet between stations 1+40 and
1+75) where the channel is undersized and flows appear to frequently overtop the banks.
Although undersized, this section of channel is functioning in a non-erosive manner and
the frequent overtopping flows have fostered the establishment of well-vegetated
wetlands (see Photo Sheet 2). The issue here is one of channel competency given the
undersized channel. There is no evidence of significant aggradation in this area although
the channel bed remains dominated by silt and very fine sand. Future monitoring in this
area should focus on profile consistency, bed materials, and benthic colonization.
Problem Area 2: In the lower portion of the channel (below the culvert), near station
5+40 the left bank appears to have been overtopped on several occasions. The floodplain
in this area falls away into the upper end of the downstream pocket wetland instead of
remaining flat or increasing in elevation. The channel bank here appears to be more of a
well vegetated bankfull berm, consisting mostly of the installed sod mat. Sod mats in this
immediate riparian area remain intact and stable with a small area of erosion in the
scarcely vegetated area, toward the pocket wetland beyond This area needs to be
monitored in the short term to make sure high flows do not cut through the sod mat. For
the long term this area should be repaired by adding fill and vegetation next to the
existing sod mat and creating a berm approximately S to 10 feet beyond the sod mat to
keep high flows moving down the riparian corridor and out of the pocket wetland. This
work will be done when the site is developed which should be within 12 months.
The pre-construction (original charmel) pebble count on 7-1499 yielded a D50 of 1.05
mm (very coarse sand) with an upstream reference reach survey (5-21-01) D50 of 4.3
mm, fine gravel. The first monitoring pebble count (9-27-01) had a D50<0.062 mm
diameter (silt). The survey conducted on 4/22/03 yielded a D50 of fine sand (approx. 0.17
mun diameter) (see pebble count). The plot provided in this report shows the pebble
counts for the relocated stream trending towards that for the original channel. This
positive trend has occurred during a period of severe drought (7-99 to 9-02) trending back
to normal or even slightly above normal (9-02 to 7-03) weather conditions.
Vegetation Assessment:
During project construction the banks of the new channel were stabilized with six to ten
inch thick sod-mats that were harvested on site, these provided immediate bank stability.
All constructed (disturbed ground) areas were immediately sowed with temporary
ryegrass. Following construction a landscape contractor was hired to continue planting of
the restored reach. Seeding consisted of sowing all floodplain and riparian areas with a
FACW seed mix. Willow stakes were harvested on-site and planted in the sod mats at the
top of the stream bank throughout the Restored reach. During the 2003 growing season,
the entire project area was observed to be covered with thriving, mostly herbaceous
vegetation. The only exception to this is a small area in the lower part of the project area
described as Problem Area 2, this area is described above.
Vegetation throughout the Restored reach was assessed on 6/30/03. Dominance was
determined based on approximate percent cover and frequency of occurrence. Dominant
vegetation had the highest percent cover within a given sample plot and occurred within
the most plots. Dominant species are listed in order with the most dominant species listed
first on the attached Kerner Ridge Riparian Vegetation Assessment sheet. The reach was
broken into 5 areas. Areas 1,4, and 5 occur upstream of the project culvert while areas 2
and 3 are downstream (see Vegetation Assessment map).
The Restored reach as a whole is nearly 100% vegetated. The channel is well shaded in
most areas during the growing season. Herbaceous and grass communities appear to be
growing uniformly through the reach, shrubs (primarily Willow) are frequent to nearly
continuous along the channel banks in the lower section but nearly absent in the upper
section. It is recommended that willows be replanted in the upper section when the rest of
the required vegetation is planted
Conclusions:
In general the relocated stream and associated floodplain area are stable and functioning
as desired. A substantial amount of wetlands have become established throughout the
constructed floodplain. Except for the small area noted above (Problem Area 2) the entire
riparian corridor is densely vegetated with herbaceous species. The trees and shrubs have
not been planted; these should be installed when the site develops, as an assisted living
facility presumably within a year or so.
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Kerner Ridge Riparian Ve e tation 613010

Area: 1
Dominate Grass Species Indicator Dominate Herb Species Indicator
Da lis lomerata FACU Solids o ru osum FAC
Phleum ratense FACU Asters . N/A
Panicum dandestinum FAC Oenothera biennis FACU

Other Species Observed
Impatiens ca ensis FACW
Ambrosia artemisiifo6a FACU
Trifolium ratense FACU
Carex baffle i OBL
E ' eron annuus FACU
Juncus effusus FACW
Leersia o oides OBL

Area: 2
Dominate Grass Species Indicator Dominate HerbJShrub Species Indicator
Da lis lomerata FACU Salk sericea OBL
Panicum dandestinum FAC Solids o ru osum FAC
Juncus effuses FACW Impatiens ca nsis FACW

Other, Observed
Oer era biennis FACU
E ". ri m nuus FACU
Ambrosia artemisiifolia FACU
Onodea sensibilis FACW
Carex baffle i OBL

Area: 3
Dominate Grass Species Indicator Dominate Herb Species Indicator
Juncus effuses FACW Oenothera biennis FACU
Elocharis obtuse OBL Solids o ru osum FAC
Sci us cyperinus OBL Ambrosia artemisiifolia FACU

Area: 4
Dominate Grass Species Indicator Dominate Herb Species Indicator
Juncus effusus FACW Trifolium ratense FACU
Elocharis obtusa OBL Solids o ru osum FAC
Carex bails i OBL Oenothera biennis FACU

Other Species Observed
Panicum clandestinum FAC
Leersia o aides OBL
Phleum ratense FACU
Ambrosia artemisiifolia FACU

Area: 5
Dominate Grass Species Indicator Dominate Herb Species Indicator
Juncus effusus FACW Eri eron annuus FACU
Carex baile i OBL Solids o ru osum FAC
Leersia o oides OBL Oenothera biennis FACU

Other Species Observed
Da tis lomerata FACU
Panicum clandestinum FAC
Ambrosia artensiifolia FACU
Trifolium ratense FACU

09/1512000 11:17 3368537671 TUTTLt ENTERPRISES PAGE 01
1025 LAMB
FAX
To:
Phone:
Fax phone: 9I 9' 7
13 -W5 9
CC:
-0
of pages including rover sheet

Fa* ohone: 336-853.7671
REMARKS: Urgent n l:or your review 1-i , Reply ASAP [] please comment
09/15/2000 11:17 3368537671 TUTTLI ENTERPRISES
09/81/2000 12:12 M2976946
rx=r wicTLmD OlERA nor4 AND mxa ' ANC'x AGENT
The packet wetlMd WK= Is as the pocket and and series of Sma swelea
waft to the poelcet
'This system don net k=rporme a vegetated filter atlthe outlet.
TW2 system do" incorporme pr=treatmsm, the gran'1 swalas provide a pretreatment
lltno Wn prior to entering pocket wetland.
mwnw ame activities shall be performed as follows:
PAGE 02
PAGE 02
1. Allier emy signiscant runoff producing rain event and at !seat montldlr:
a. Impeet the pocket wetland Wtem f.. excessive seditr?esit atcuna?latioa.
erosion, trssh accumulation, vegetate cover, and getreral conditloa.
b. Check and clear the orifice of any ob ruamm such that drawdown of the
temporary pool occurs witliim z to 5 ys Y deigned-
2. Repair eroded arw immediately, rr.-seed as
vegWwve cover end remove trash as needs
3. IWM and repair the collection system (i,e,
to Iaintain proper Rinctioning,
4. If exceWve seditnent 6") accumulates in
and vegetation will be replaced following re
5. All components of the pocket wetland syste
working order.
6. If the basin must be drained for an amt
Bushing of adin+ent into the receiving
maximum extent practical.
to maintain Sood
pipes, riprap. etc.) Quarterly
pocket wetland it will be removed
dial! be maintained in good
or to perform maintenaace, the
rdy shall be minimized to this
I adtnowledge and agree by my signamrs below the 1 am responsible for the
p.*I,manee of the six maimaaance procedures list above. I agree to MOMY DWQ of
any problems with doe system or prior to any dung s to the system or responsible party,
print name:f d J y/ V/ Gt
Title: (04- ni C A T
/0" ?Oqmkgj
A)
I
09/15/2000 11:17 3368537671 TUTTLE ENTERPRISES
09/9117890 12:12 9282976946
6 ?7o
man:
Dees:
i
a Notary Public for thwmt Countty do he reby certp ppetired before my this day of y,? nt e
e executipof the flprgOirig povow0w
amow1k the du
requiranw tat. Vitus my hand and 0MCW USi, II
SEAL
My eom WWon expires _..4;- -? 2e, - S2 S
2

IL
PAGE 03
PAGL 03
ip
State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
Trillium Residential Services
1025 Lamb Road
Lexington, NC 27295
Dear Madame/Sir:
September 15, 2000
Re: Trillium Residential Services
Watauga County
DWQ # 990971
The Division of Water Quality has reviewed your stream relocation/mitigation and stormwater
management plans dated August 8, 2000 and revisions dated August 30, 2000 and found them acceptable.
If you should have any questions, please feel free to contact Todd St. John at [phone].
Sincerely,
cc:
Winston-Salem DWQ Regional Office ?J
Todd St. John
File
Central Files
Mr. John Vilas, E'nv 3764 Rominger Road, Banner Elk, NC 28604
4401 Reedy Creek Road, Raleigh, NC 27607 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post-consumer paper
Re: Trillium
Subject: Re: Trillium
Date: Wed, 13 Sep 2000 08:49:14 -0400
From: John Domey <[e-mail]>
To: tstjohn <[e-mail]>
CC: "dave.penrose" <[e-mail]>
they agreed in writing to do the biological monitoring so they are stuck
with that. is stormwater okay? if so i can issue approval. please
advise. thankx
tstjohn wrote:
> John and Dave, I checked my voice mail and John
> Vilas has been persistent in attempting to
> receive approval for his stream relocation and
> stormwater plans for this project near the
> Lynnhaven project. Everything is acceptable
> except for the biological monitoring. Maybe a
> cut off for requiring biological monitoring
> should be based on the amount of mitigation
> required vs that provided... since they only
> needed about 300 or so feet of mitigation but
> are providing 660 maybe we could not require
> biological monitoring if impacts are less than
> 500 for this type relocation?
> anyway, it is just an idea, but it would be
> nice to get this one off my desk and stop John
> Vilas from calling me... thanks

Y d
C4
J?

08/29/2000 14:53 8282976946

F?IV L?M111n?1 Caw?? ?w+?olw M+a
?MMw?r nd.
??' iR NC 7?0?1
~. so ow Ivorw
PAGE 01
vim
X33 ?.-_ ...•M
?-;z.
w... X 3 3 - ?s`s y go"
?r r;ll? Pre M
O wRPO o pw wsam c n. c«wmwwe wM.. yl D r1 r11w?M1•
• Q•wrn.?w.
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a
? ? s s a t?.r

a! l e4- )*-,L¢. .,?
S QQ

CIO 11A-- )
08/29/2000 14:53 8282976946
PAGE 02
No.
State of North Car
Department of Environment and
Divisions of Water Q
STORMWATER MANAGEMENT
POCKET WETLAND
PROJECT INFORMATION
Project
Contact Person: _
for projects with multiple pocket wetlands specify v
elevations
Maximum depth elevation:
Permanent pool elevation:,
Overflow elevation:
areas
Permanent pool surface area:
Drainage area:
Impervious area,
volumes
Temporary pool
other parameters
SA/DA from DWQ table:
Diameter of ou
Design rainfall:
Designs TSS removal-,
Resources
APPLICATION FORM
a No.
applies to this form:
08/29/2000 14:53 8282976946
POCKET WETLAND OPERATION AND MADgTENANCE AGREEMENT
The pocket wetland system is defined as the pocket v?etland and series of grass swales
leading to the pocket wetland.
This system does not incorporate a vegetated filter a the outlet.
This system does incorporate pretreatment; the gram -A swales provide a pretreatment
function prior to entering pocket wetland.
Maintenance activities shall be performed as follows:
PAGE 03
1. After every significant runoff producing rainf event and at least monthly;
a. Inspect the pocket wetland system for excessive sediment accumulation,
erosion, trash accumulation, vegetativ cover, and general condition.
b. Check and clear the orifice of any ob coons such that drawdown of the
temporary pool occurs within 2 to 5 d ys as designed.
2. Repair eroded areas immediately, re-seed as n6cessary to maintain good
vegetative cover and remove trash as needed. ,
s, pipes, ripraA etc-) quarterly
3. Inspect and repair the collection system (i.e. stile
to maintain proper functioning. 4. If excessive sediment accumulates in the pock t wetland a plan to remove it must
be developed. Such a plan should incorporate pretreatment measure as well as
measures to minimize disturbance of benefi ' vegetation.
5, All components of the pocket wetland system hall be maintained in good
working order.
6. If the basin must be drained for an emergency r to perform maintenance, the
flushing of sediment into the receiving wat dy shall be minimized to the
maximum extent practical.
I acknowledge and agree by my signature below _ csponsible for the
performance of the six maintenance procedures listed ove. I agree to notify DWQ of
any problems with the system or prior to any changes o the system or responsible party.
Print
08/29/2000 14:53 8282976946
PAGE 04
a Notary Public for the
County of _._.._ .._ , do hereby certify
personally appeared before me this day of -
acknowledge the due execution of the forgoing po r,
requirements. Witness my hand and official seal,
My commission expires
of
, . and
wciland system maintenance
08/29/2000 14:53 8282976946
1?
16
15
1,
13
OuTurr
p"
OUTLET PEPE IS I INCH DIAME-
TER PVC PIPE TURN-DOWN
AND HARDW CLOTH DEBRIS
GUARD. INLET LEVATION SET TO
3116. INSTALL 1/2% GRADE TO
STREAK !
PAGE 05
08/29/2000 14:53 8282976946 PAGE 06
E'nV 3784 RorninW Road

? ?? Banner Elk, NC 288M4
Ph/Fax [phone]
e-mail: envQbaone.net
?a
17
August 10, 2000
Mr. Todd St. John Ni d„::..
NC DENR DWQ
WeNamW401 Unit
4401 Reedy Creek Rd.
Raleigh, NC 27607
RE: Trillium Residential Services (new project mare Happy Valley Homes)
DWQ Project* 990971
Watauga County
Dear Mr. Saint John:
In response to the 401 Water Quojky Certification Approval letter dated July 17, 2000 wee hereby submit
the foiloWng irnfonnatian for your review and approval so that we may begin contraction of the
referenced project:
1. Construction plans for the proposed MIOCOted strearn with details and specifications. (see
sheets 04 and C5)
2. A storm water management plan with duels and specifications designed to remove 70°!o
TSS. (see shed C5)
3. A consolidation of proposed monitoring activities previousy submitted {attached)
If you have any quedb*z regarding this information please call me at 828-297.6948, thank you.
;yit'x,sre?y,
C. Vitas
President, E'nV Environmental Consuttirng Services Inc.
oc: Mr. Ray Howell
Mr. Ricky Dodson
MONITORING PLAN for PROPOSED RELOCATED TRIBUTARY TO EAST FORK
Trillium Residential Services Project
DWQ Project #990971
August 4, 2000
1. The following monitoring plan for plant survival is proposed:
a, The total number and location, by zone, of trees and shrubs planted in the
riparian zone will be recorded on the As-Built plan to be submitted to
DWQ upon project completion
b. Trees and shrubs will be counted in years 2,3 and 4 following construction
and survival rate will calculated for each species and reported.
2. The following monitoring plan for macrobenthos and fish recolonization is
proposed:
a. The QUAL-4 method and DWQ Standard Operating Procedures (DWQ,
Environmental Sciences Branch, Ecosystems Analysis Unit, Biological
Assessment Group, Standard Operating Procedures Biological Monitoring
Document) will be used in collecting and evaluating all samples required
by this plan. A DWQ certified lab will be used to evaluate all samples.
b. Samples from 2 locations at the proposed restoration site will be collected
prior to construction One of these sites will be above the proposed
restoration work and the other within the existing channel to be filled.
c. Upon completion of proposed work samples will be collected at 2 sites in
years 2,3 and 4. One of these sites will be above the restored reach (same
as pre-construction site) and the other within the restored reach. All
sampling sites will be shown on the As-Built plan to be submitted
following construction. Results of sampling will be reported to DWQ
within 6 months of collection.
d. A habitat description will be provided on the DWQ Stream Habitat
Evaluation Form for each sampling site.
3. Streambank stability will be monitored according to the following plan:
a. An As-Built plan will be prepared and submitted following completion of
the project. This plan will consist of a complete "level 2" analysis of the
stream both above the driveway crossing providing dimension, pattern,
profile, and channel material information. Two permanent cross sections
will be established (one above and one below the driveway crossing).
b. This assessment will be repeated in years 2,3 and 4 following completion
of project. A report of findings will be submitted to DWQ within 6 months
of each assessment.
.iE''nV
August 30, 2000
Mr. Todd St. Jahn
NO DENR DWQ
Wetlands/401 Unit
4401 Reedy Creek Rd.
Raleigh, NC 27607
3764 Rominger Road
Banner Elk, NC 28604
PhiFaoc 828-297-6946
e-mail. erwaboone.W
R 2000
-__RE: Trillium Residential Services (new project name HAM Valley Homes)
DWQ Project* 090971
Watauga County
Dear Mr. Saint John:
Included under this cover are the modified moss sections through the proposed pocket wetlands
showing the proposed outlet structure.
If you have any questions regarding this Information please call me at 828-297-6946, thank you,
Sincerely,
ZnC.s
President, EW Environmental Consulting Services Inc.
2,3
2
OUTLET
x PIPE PRO'O E
CH. AN. L s
21
STORAOF
i ?
BANKFULL
STAGE
20
y
4 A,ppRC
M
i
FLOW
F V R SE
1
OUTLET PIPE IS A I INCH PVC
PIPE WITH TURN DOWN AND

1 HARDWARE CLOTH DE13RIS
GUARD. INLET ELEVATION
S SET TO 3119.5. INSTALL AT
1/2% GRADE TO STREAM
z ?
4 c
t
k
Y F
16 0 20 0 100
CROSS SECTION B
State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B.. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
1?•
NC ENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
stormwater management plan must include plans and specifications for stormwater
management facilities designed to remove approximately 70% TSS according to the most
recent version of the NC DENR Stormwater Best Management Practices Manual. Also, before
any permanent building is occupied at the subject site, the facilities, as approved by this
Office, shall be constructed and operational, and the stormwater management plan, as
approved by this Office, shall be implemented.
If you do not accept any of the conditions of this certification, you may ask for an adjudicatory hearing. You
must act within 60 days of the date that you receive this letter. To ask for a hearing, send a written petition, which
conforms to Chapter 150B of the North Carolina General Statutes to the Office of Administrative Hearings, P.O. Box
27447, Raleigh, N.C. 27611-7447. This certification and its conditions are final and binding unless you ask for a
hearing.
This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act. If
you have any questions, please telephone John Dorney at 919-733-9646.
Attachment
cc: Corps of Engineers Raleigh Field Office
Winston-Salem DWQ Regional Office
File copy
Central Files
Todd St. John
Sincere]
John Vilas; En'V ill
Division of Water Quality - Non-Discharge Branch
1621 Mail Service Center Raleigh NC 27669-1621 Telephone [phone] FAX # [phone]
An Equal Opportunity Affirmative Action Employer -
50% recycled/10% post consumer paper
State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
July 17, 2000
Watawga County
DWQ Project # 990971
APPROVAL of 401 Water Quality Certification and ADDITIONAL CONDITIONS
Trillium Residential Services, LLC
1025 Lamp Road
Lexington, NC 27295
Dear Sirs:
You have our approval, in accordance with the attached conditions and those listed below, to place fill material
380 linear feet of streams for the purpose of constructing an extended care facility (Trillium Residential Services) at
Bamboo Road in Boone, NC as described in your application dated August 25, 1999. After reviewing your
application, we have decided that this fill is covered by General Water Quality Certification Number 3108. This
certification allows you to use Nationwide Permit Number 26 when the Corps of Engineers issues it. In addition, you
should get any other federal, state or local permits before you go ahead with your project including (but not limited
to) Sediment and Erosion Control, Coastal Stormwater, Non-Discharge and Water Supply Water shed regulations.
This approval will expire when the accompanying 404 or CAMA permit expires unless otherwise specified in the
General Certification.
This approval is only valid for the purpose and design that you described in your application except as modified
below. If you change your project, you must notify us and you may be required to send us a new application. If the
property-is sold, the new owner must be given a copy of this Certification and approval letter and is thereby
responsible for complying with all conditions. If total wetland fills for this project (now or in the future) exceed one
acre, compensatory mitigation may be required as described in 15A NCAC 2H .0506 (h) (6) and (7). For this
approval to be valid, you must follow the conditions listed in the attached certification and any additional conditions
listed below.
1. Deed notifications or similar mechanisms shall be placed on all remaining jurisdictional wetlands and streams to
notify the state in order to assure compliance for future wetland and/or water impact. These mechanisms shall
be put in place within 30 days of the date of this letter or the issuance of the 404 Permit (whichever is later).
2. Plans for the stream channel relocation, enhancement, or restoration shall be submitted to and approved
in writing by this Office before impacts to waters, streams or wetlands occur. It is recommended the
check list provided in Appendix F in NC DENR's The Internal Technical Guide for Stream Work
in North Carolina, May 2000 be used as a guide to the types of design parameters that must be
addressed in order to obtain plan approval. The stream relocation shall be built according to the
approved plans before any permanent building on the site is occupied. If the stream relocation becomes
unstable, the stream shall be repaired or stabilized using only natural channel design techniques. Rip
rap and other hard structures may only be used as temporary repairs if required by the Division of Land
Resources. Additionally, all repair designs must be submitted to and receive written approval from this
Office before the repair work is performed. If any portion of the relocated stream is used as
compensatory mitigation for stream impacts, that portion shall be preserved in perpetuity through an
easement or some other legally binding mechanism.
3. An additional condition is that a final, written stormwater management plan shall be approved
in writing by this Office before the impacts specified in this Certification occur. The
Division of Water Quality • Non-Discharge Branch
1621 Mail Service Center Raleigh NC 27669-1621 Telephone [phone] FAX # [phone]
An Equal Opportunity Affirmative Action Employer •
50% recycled/10% post consumer paper
3764 Rominger Road
Banner Elk, NC 28804
PIVFax 828-297-6946
e•malh envgboone.net
June 23, 2000
9 R ?
f?
Mr. John DoMey,
.
NC DENR DWQ
We&wdsMI Unit '
WETLANDS G
1621 `Mail Servioe Center WATER Ut S ITY v ...
Raleigh, NC 27699-1621
Re Trillium Rmclential Services (new project name Happy Valley Homes)
DWQ Project`#. SW I
Wateno County
Dear Mr. t)mW,
lrrcJuded under this'wyer are various Items `submitted in response to your letter dated June 6, 2000.
. Two - ategories of inforrrtation,`> (1) charrtnel design inbTnation, and (2) stormwater management
infonratlcm, were requested in the. rid letter: Based on a conversation with Todd St. John the
following Items are provided under this cover.
Channel Design lnkmotion:
a) ` Channel Materials: It Is assumed that the
proposed channel will have a similar particle size
distribution to the adsttrlg'charmei'as they are within 100 fleet of each other and occur vAthin a single.
soils unit:, (Ctdi+" loam 0 -- 2% slopes): `Pebble count data from the existing channel is provided to
satisfy this requireiYo t (sheet I of 9)..
b) Velocity, and shear stress values were requested. These am provided for the adding, proposed
and reference channels on the Channel Design and Reference Reach Specifications table (sheet 2 of
9).
c Regbnal Curve infocmakEon was
requested. Regional awes developed by the, NC.' Stream
F?estoration Institute. for drainage area vs. bankfuli width, area, mean depth, and discharge are provided
(sheets 3&4 of 9). T hese curvesi ?a developed from data collected in the mountain province of North
Cardina. It-must-be panteci ? out that theme is Only 0* data point on these curves from a type E. d rearm
Tench ftad-at Rosman; E4).: Aso the proposed dre irn has 'a drainage area full order of
..
magnitude smoker than the:smallest stream used to generate the regional curves. In each case curves
wens extrapotartaii out #o IWu& t118 dralt"o area of the proposed stream. Two polrb were added to
each curve; one is. the proposed stream, the other is Worley Creek an ungaged E5 in the Watauga
River Basin.
d) Reference Reach lnf xmation was requested: Information on Worley Creels is provided. This is a
stable E5 stream with.a drainage area of 1.2 square miles in the Watauga River Basin (dxxA 2 of 9).
e) Projected velocity inforrnatim for the overbank region was requested. A stream flood analysis using
f the HEC-2 program was perforated pr?eviou$ty to de#erm11W the maximum 10(1 year flood stage and
capa* for the proposed channel and ftoodptain. This same model was rewn with 2 and 10 year
s , x;
-1 W.
® Page 2 June 23, 2000
projected flan Velocities for the left and right ovetbanks as well as the channel am provided in the
%
1 ...
20.00'

?, I ?
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•
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y
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/ 41 1 tt . 1. .
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W. 312. EA$R TRAP
?/ ' ?ry r ME9f ICAL P F.F. ELEV. = 3127 5'
3
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169
sv
S
VARIABLES EXISTING
CHANNEL PROPOSED
CHANNEL WORLEY
CREED xe
Stream 7 051F5 E5 E5
D e, Area 100 ac. 100 ac. 765 ac.
Bmd:full Width
(Wbkf) 7.75 feet 6.0 feet 10.6
Bankfill Mean
De th` ; b 0.67 feet 0.85 feet 1.37
Widtht?Depth Ratio -
bkf) 11.6. , 7.1 7.74
Bankfull Area
Ab S.2 sq ft. 5.1 sq.ft.
- 14.5
$ankfull Max Depth` 1.5 feet 2.0 feet 2.35
Flood Prone Area
Width, 12.5 feet 49 feet >100 feet
Entrencbment Ratio 1.6 8.2 >10
Meander Length Strai& ditch Mean 80 feet,
60 - 100 120 feet
Ratio (LnVWbld na 13.3 ` 11.32
Radius of Curvature na Mean 22 feet,
range 14 --35 28 feet
Ratio na 3.7 2.64
Belt Width (Wblt) : na Mean 25, range 1 S -
30 90 feet
Meamder Width
Ratio , I/Wbkfl Na 4.2 8.5
Sinuosity (k)
(stream
l yells } 1.0 1.65 1.6
Vall.: , ..Slo... - ft/ft 0.015 0.02 0.0106-
Avg. Slope (Savg =
Svalle lk 0.015 .0.012. 0.0056
Pool Slop q S of 0.006 0.0022 0.001
Rile Slo 5 ' 0.023 0.021

D50" 0.85 mm 0.85 mm. 1.8 mm
D84 19 mm 19 mm 20 mm

Veloc' bkf talc 4.74"ftls 5.42 ft/s 5.31 ft/s
Shear; Stress caic 0:534 0.50 0.37
Streanipower `: 2:53, 2.72 1.96
Qbkf = 24:6 27.6 77
A- I L.rIV
mmmm?
NC Rural Mountain Regional Curve
1000 -
Ccnrv.c
NC Rural Mountain Regional Curve
10000 ? ......... ........ ...?....Y....f.. Y.. ?..?.:f................ f.........1......?....... .. . ..................?.........Y......f
VELOMY TABLE
FLOOD MEAN VELOCITY MEAN VELOCITY MEAN VELOCITY
FREQUENCY LEFT OVERBANK 'CHANNEL RIGHT
OVERBANK
2 YEAR 2.13 Vs (range 1.99- 5.07 f/s (range 4.09- 1.97 f/s (range 1.65-
2.28) 5.64 2.25
10 YEAR 2.53 f/s (range 2.34- 5.32.f/s (range 4.50- 2,62 f/s (range 2.40-
2.72 6.13} 2.83).:
100 YEAR 2.8 :Us (range 2.30,
_ 6.90 Vs (range 5.74- 2.91 f/s (range 2.40-
.
3.22 7.54 3:39 .
STOMWATER MANAGEMENT INFORMATION
Total Area De th- a Required Area Provided Area
500% ' 0" to 6" 278 .$. 1980 .f L
40% 6" to 12" 222 .ft. 786 .ft.
10%. 12" to >18" 57 MI. 234. .ft.
TOT ." 557 .ft. 3000 .ft.

% Total Area th a Required Area Provided Area
50%. 0" to 6" 156 ft: 515 .ft.
40% 6" to 12" 124 .ft. 142 .ft,
10% 12""to>1$" 31 .ft. 63' :t
**w********* TOTAL 311 .ft. 720 .ft.
9 of q

3784 Rominger Road
Banner Sk NO 28604
Ph/Fox 828-297-8948
wmalk envgboone.nat
June 23, 2000
Mr. John Domey
NC DENR DWQ
WedandsF401 unit
1621 Mail Service Center
Raleigh, NO 27699-1621

e k?
&A J
6 2000
I el- -t Zf-M '7110
RE: Trillium R ices (new project name Happy Valley Homes)
DWQ Project 7'1
Watauga County
Dear Mr. Dorney:
Included under this cover are various items submitted in rye to your letter dated June 6, 2000.
Two categories of information, (1) cat wxg design inform madam, and (2) storrm?m W manalgemermt
information, were requested in the refenerxced letter. Based on a conversation with Todd St. John the
folkwAng items are provided under this ever.
Channel Design Information:
a) Channel Materials: It is assumed that the proposed channel will have a sirruiar particle size
didrib ution to the existing channel as they am within 100 feet of each other and occur within a single
soils unit (Chemwoola loam 0 - 2% slopes). Pebble count data from the existing channel is provided to
satisfy this requirement (shear 1 of 9).
b) Velocity, and shear stress values were requested. These are provided for the existing, proposed
and reference channels on the Channel Design and Reference Reach Specifications table (sheet 2 of
9).
c) Regional Curate infomutiam was requested. Regional awes developed by the NC Stream
Restoration institute for drainage area vs. bankfuli width, area, mean depth, and discharge are provided
(sheets 3&4 of 9). These carves were developed from data collected in the mountain province of North
Carolina. It must be pointed out that there Is only are data point on these curves from a type E stream
(French Broad at Rosman, E4). Also the proposed stream has a drainage arw a full order of
magnitude smaller than the smallest stnwn used to generate the regional curves. in each case carves
were extrapolated out to include the drainage area of the proposed stern. Two points were added to
each curve; one is the proposed stream, the other is Wcxley Creek an ungaged E5 In the Watauga
River lain.
d) Reference Reach Information was requested: Information on Worley Creek is provided. This is a
stable E5 strearn with a drainage any of 1.2 square miles in the Watauga River Basin (sheet 2 of 9).
e) Projected velocity infcxrnaaon for the overtamk region was requested. A stream flood analysis using
the HEC-2 program was performed previously to determine the maximum 100 year flood stage and
? for the propowd channel and ftoodplain. This same model waas rerun with 2 and 10 year
E'nV
M#V?1?01nv#waidualM011Si I" so'11 3,5 hw1w
0 Page 2 June 23, 2000
projected f om Velocities for the left and right overbanks as well as the channel are provided in the
L
Velocity Table (sheet 5 of 9).
Stonyw ater Management Information: '2ODU
The NC DWQ stom water management requirement to remove 85% TSS will be achieved
ioombinatim strategy involving primarily grass wales and pocket vw tiara ls. it is stressed that the E
leer intensity devrnent (site imperviousness = 23.80/6) that meets the tool govemrtnt { '
requirements for development in a WS4V PA w thout the use of any BMP's. TSS removal strategy is as
follows:
1) Site runoff collection and conveyance has been designed to minimize flaw concentration, keep
velocities well below erosive thresholds, and eliminate the treed for culverts.
2) Broad, tow angle grass wales are proposed to corwey storr mater mnoff from origin to final
treatment area.
3) Oversized pocket wetlands will be used as primary treatment. Any spillover from the packet
wetlands will pass through additional constructed wedand areas prior to entering the stream.
There are five stotmwater runoff source areas (subbasins) on the site (a previous submittal indicated
four subbasm, hoover one has been subdivided)(see storrm ater plan). Details and specifreatiorrs for
each of the source arms, swates, and pocket %etlands, are provided (sheets 7-9 of 9) along with a
schematic diagram (sheet 6 of 9) of the treatment strategy.
Trees and shrubs will be planted in the riparian zone and proposed w0and area at a density of 500
plants per acre. Species will include Red Maple, Hazel Alder, Silky or Bankers shrub Willow, and Silky
D VAK)od. Plant material will consist of live stakes and Ur to 24" bane tnot whips. The wetland areas
will be seeded with rye or millet (depending on time of yeo as a nurse crop and over seeded with a
facultative wet and obligate v tland seed mixes from Ernst Conservation Seeds at a rate of 10 ibs per
acre.
If you have any questions regarding these responses please tali me at 828-297-6946, thank you.
Sincerely,
g me-
J
Z
'n C. Vilas
President, E'nV Environmental consulting services inc.
cc: Mr. Ray t-kammil
1
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-- ---- --- ----- --- 280.84' L1
?? -= BAMBOO ROAD 60' R/W 510.05'00"W I 1
EXISTING
-
524
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_
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-
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Sid iZM T F I? PZ A AJ ''
t < (. 1 l/l Y?i VS 1 1' 1i RAJ rl A-L 5 1= A V IC 1 5
THE "AFRA V+ 41f X49~ FMM HOOK 169
PEBBLE COUNT DATA
K nu w?scQ ?_ . Fu?-!? No:
R9?8Ch: ?In 164 -PlLe j Date; J-v
r?+ rvJ NUMBER OF PARTICLES
. g Si H !li 13 H o o
3000
2000
10100
am
7W
WD
500
jZ- 400
300
44 !1'
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A
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1 60
50
40 q?
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L ---I L14 20 1
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10

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"VARIABLES EXCSMG
CHANNEL PROPOSED
CHANNEL WORLEY
CREEK re
Stream T G5/F5 E5 E5
P!o e Area 100 ac. 100 ac. 765 ac.
Bankfull Width
Wb 7.75 feet 6.0 feet 10.6
Bankf4U Mean
De th b 0.67 feet 0.85 feet 1.37
Width/Depth Ratio
Wbkf/Dbk fl 11.6 7.1 7.74
Bank full Area
(Abkf) 5.2 sq.ft. 5.1 sq.ft. 14.5
Bankfiall Max Depth
LD?max 1.5 feet 2.0 feet 2.35
Flood Prone Area
Width (Wfipq) 12.5 feet 49 feet >100 feet
Entrenchment Ratio
W a/Wbkf) 1.6 8.2 > 10
Meander Length
(LM) Straight ditch Mean 80 feet,
png
60 - 100 120 feet
Ratio m/Wb na 13.3 11.32
Radius of Curvature na Mean 22 feet,
e 14 --35 28 feet
Ratio (Rc/Wbkf) na 3.7 2.64
Belt Width (Wblt) na Mean 25, range 15 -
30 90 feet
Meander Width
Ratio (W IV%?kf) Na 4.2 8.5
Sinuosity (k)
(stream.

le )
1 vall
q j 1.0 1.65 1.6
_
Valle SlolLe ft/ft
0.015
0.02
0.0106
Avg. Slope (Savg =
Svalle /k 0.015 0.012 0.0056
Pool Slope S pool) 0.0063 0.0022 0.001
Ride Slo S ' 0.023 0.021

D50 0.85 mm 0.85 mm 1.8 nun
D84 19 mm 19 mm 20 mm

Velocity bkf talc 4.74 ft1s 5.42 ft/s 5.31 ft/s
Shear Stress (caic 0.534 0.50 0.37
Stream Power 2.53 2.72 1.96
Qbkf 24.6 27.6 77
a oi?. 9
Page 2 of 3
CX) W°',u-Y
?? IJ1`000-? ? 1C"1J5ivlt?.^ ??
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http://www5.bae. ncsu. edu/programs/extension/wqg/sri/mtncurves.html
6/15/00
[Z?LeJtian 1 C_LA-rrv 2
Page 1 of 3
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6/15/00
VELOMY 'T'ABLE
FLOOD MEAN VELOCITY MEAN VELOCITY MEAN VELOCITY
FREQUENCY LEFT OVERBANK CHANNEL RIGHT
OVERBANK
2 YEAR 2.13 f/s (range 1.99- 5.07 f/s (range 4.09- 1.97 f/s (range 1.65-
2.28) 5.64 2.25
10 YEAR 2.53 f/s (range 2.34 5.32 f/s (range 4.50- 2.62 f/s (range 2.40-
2.72 6.13 2.83)
100 YEAR 2.8 f/s (range 2.30, 6.90 #7s (range 5.74 2.91 f/s (range 2.40-
3.22 7.54 3.39
Ptok4A z lqocte l d? fl-ops-ed
;2 y? - ej?
t) 0 00 Q:9

e?IAAe 1
5- of- I
STORMWATER MANAGEMENT INFQRMATIQN
..M A I 1..?14?..? I ¦ I
AREA DRAINING TO POCKET WETLAND A
Runoff Area 1: 0.37 acres, 35% Impervious
Runoff Volume Q10 = CIA = 1.16 cfs
C=0.45, I=6.98 in/hr, A=-0.37 ac.
Swale 1: length = 210 ft.
Type = V-ditch
Width =10 ft.
Depth = 2 ft.
Slope = 0.02 ft/ft
Cover = Tall Fescue, n = .075
10yr.Q=1.16 cfs
10 yr. Velocity = 1.23 ft/s
Flow Depth = 0.6 ft.
Swale 2: length =120 ft.
Type = Parabolic
Width =10 ft.
Depth =1.0 ft.
Slope = 0.0075 ft/ft
Cover ; Class C grass mix 8" to 12"
n = 0.1
10 yr. Q =1.16 cfs
10 yr. Velocity 0.44 ft/s
Flow Depth = 0.3 ft.
Runoff Area 2: 0.38 acres, 58% Impervious
Runoff Volume Q10 = CIA =1.72 cfs
C=0.65, 1=6.98 in/lul, A=0.38 ac.
Swale 3: length = 80 ft.
Type = Parabolic
Width =15 ft.
Depth =1.0 ft.
Slope = 0.07 ft/ft
Cover = Tall fescue with temp liner
n = 0.075
10 yr. Q = 1.72 cfs
10 yr. Velocity = 1.8 ft/s
Flow Depth = 03 ft.
-3- or 9
STOAMWATER MANAGEMENT INFORMATION
Swale 4: length =180 ft.
Type = Parabolic
Width =10 ft.
Depth =1.0 ft.
Slope = 0,0075 ft/ft
Cover = Class C grass - 8" to 12"
U=0.1
10 yr.Q=2.89cfs
10 yr. Velocity = 0.62 ft/s
Flow Depth = 0.5 ft.
Runoff Area 4a: 0.95 acres, 62% Impervious
Runoff Volume Q 10 = CIA = 4.97 cfs
C=0.75, I=6.98 in/hr, A=0.95 ac.
Swale 5: length =110 ft.
Type = Trapezoidal
Width = 12 ft.
Depth = 1.0 ft.
Side Slopes = 4:1
Bottom Width = 4.0 ft.
Channel Slope = 0.02 ft/ft
Cover = Class C grass 8" to 12"
n=4.i
10 yr. Q = 4.97 cfs
10 yr. Velocity = 1.3 f/s
Flow Depth = 0.5 ft.
Pocket Wetland A:
Total area draining to Pocket Wetland A =1.7 acres
Impervious surface within this drainage area = 0.94 acres
Percent Impervious = 55% < 70% therefore,
SA/DA% for Pocket Wetland A = 0.75%
1.7 ac. * .0075 =.0128 ac. = required surface area = 558 sq.ft.
Depth Distribution of Pocket Wetland A:
% Total Area Depth Range Re aired Area Provided Area
50% 0" to 6" 278 .ft. 1980 .ft.
40% 6" to 12" 222 .ft. 786 .ft.
10% 12" to >18" 57 .ft. 234 .ft.
***************?` TOTAL 557 .ft. 3000 .ft.
8 OF q
STORMWATER MANAGEMENT INFORMATION
AREA DRAINING TO POCKET WETLAND B
Runoff Area 3: 0.65 acres, 26% Impervious
Runoff Volume Q10 = CIA =1.8 cfs
C=0.4, I=6.98 fivk, A=0.65 ac.
Swale 6: length = 130 ft,
Type = V-ditch
Width = 15 ft.
Depth = 1.0 ft.
Slope = 0.02 ft/ft
Cover = Tall Fescue, n = 0.075
10 yr. Q = 1.8 cfs
10 yr. Velocity =1.1 f/s
Flow Depth = 0.5 ft.
Runoff Area 4b: 0.30 acres, 62% Impervious
Runoff Volume Q10 = CIA =1.6 cfs
C--0.75, I=6.98 in/hr, A=0.3 ac.
Swale 7: length =150 ft.
Type = Parabolic
Width =12 ft.
Depth = 1.0 ft.
Slope = 0.014 fttft
Cover = Class C grass 8" to 12"
n = 0.1
10 yr. Q=2.4cfs
10 yr. Velocity = 1.12 f/s
Flow Depth = 0.5 ft.
Pocket Wetland B
Total area draining to Pocket Wetland B = 0.95 acres
Impervious surface within this drainage area = 0.36 acres
Percent Impervious = 38% < 70% therefore,
SA/DA% for Pocket Wetland B = 0.75%
0.95 ac. * .0075 = 0.0071 ac. = required surface area = 310 sq.ft.
Depth Distribution of Pocket Wetland B:
%o Total Area Depth Range Required Area Provided Area
500/0 0" to 6" 156 .ft. 515 .ft.
40% 6" to 12" 124 .ft. 142 .ft,
100/0 12" to >18" 31 .ft. 63 tl,
****'?********** TOTAL 311 .ft. 720 .ft.

State of North Carolina
Department of Environment
m and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
Certified Mail Return Receipt Requested
Trillium Residential Services
1025 Lamb Road
Lexington, NC 27295
Dear Madame/Sir:
T.WMAI
NCDENR
June 6, 2000
Re: Trillium Residential Services
Watauga County
DWQ # 990971
The Division of Water Quality has reviewed your response to our request dated September 21, 1999 for
additional information regarding the subject 401 Water Quality Certification application for the subject
project. The information provided was not complete because the proposed stream mitigation plans lack
necessary information in order to determine if plans constitute a restoration project. Also, the stormwater
management plan was not complete since it did not include a wet detention pond as mentioned in our
September 21, 1999 correspondence. This information is needed by DWQ in order for us to decide whether
this project is approvable.
Specifically, in regards to the stream restoration design, please address the items checked on the attached
Stream Work Check List. Also, please provide the stormwater management plans that include, plan details
and calculations for a wet detention pond or wetland designed to remove 85% TSS per the NCDENR
Stormwater Best Management Practices Manual, April 1999.
I can be reached at 919-733-1786 if you have any questions. Until this information is received, I will place
this project on hold due to incomplete information (15A NCAC 2H.0507(a)(4)).
Attachment
Sincerely,
rDomey
ifi o
n Program
cc: Winston-Salem DWQ Regional Office
Todd St. John
File
Central Files
Mr. John Vilas, E'nv 3764 Rominger Road, Banner Elk, NC 28604
4401 Reedy Creek Road, Raleigh, NC 27607 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post-consumer paper
40n
NCDENR
DIVISION OF WATER QUALITY
June 5, 2000
Memorandum To: John Dorney
From: Todd St. Joh
Subject: Trillium Residential Services
DWQ# 990971
Watauga County
I ?C- Wk I
1ola
?A-u
I reviewed the stream restoration plan dated April 26, 2000 and
management plan dated proposed for the subject project. The stormwat
plan proposes to provide "sheet flow" off of the impervious areas for
grassed swales for the remainder of the site. The plans do not provide
indicate if sheet flow will be achieved and if the grassed swales are p c
Neither BMP is considered to remove. the full 85% TSS. The "On lc

stormwater
:r management
rt of the site and
lough detail to
)erly sized.
Letter (9/21,

kL'11 ) I I
1999)" o manage ment re i n s. he stream --??
restoration p an i not provide enough information to provide an adequate review of the
project. I have checked several items on the attached checklist that need to be provided in Z,y
order to complete our review. In addition to the "checked" items, design details should be r
provided for the channel 30 feet above and 60 feet below the driveway crossing as it may
not conform to the proposed natural channel design criteria.

E'nV
Environmental Consulting Services Inc.
3764 Rominger Road
Banner Elk, NC 28604
Ph/Fax [phone]
e-mail: [e-mail]

May 22, 2000
Mr. John Domey
NC DENR DWQ
Wetlands1401 Unit
1621 Mail Service Center
Raleigh, NC 27699-1621
RE: Trillium Residential Services (new project name Happy Valley Homes)
DWQ Project #: 990971
Watauga County
Dear Mr. Domey:
W2 420
Included under this cover are various items submitted in response to your letter dated 09/21/1999.
Item list::
a) Site and Grading plan - Sheet C1- Happy Valley Homes
b) Floodplain Map copy
c) Narrative for Alternatives Analysis and Stormwater Management Strategy (2 pages)
d) Trillium Assisted Living, Stormwater Subbasin Map
e) Statement from local government stating compliance with Watershed Protection rules
f) Compensatory Mitigation Proposal - addendum -
g) Copy of NC WRC letter of concurrence
If you have any questions regarding these responses please call me at 828-297-6946, thank you.
Sincerely,
ZhhnnC.ilas
President, E'nV Environmental Consulting Services Inc.

cc: Ms. Jennifer Frye
Mr. Ray Howell
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ALTERNATIVES ANALYSIS
rr
DS
W ND
WATE UAI?TY -.As can be seen from the attached plan sheet C-1 and copy of the floodplain map of this
area there are no practical site layout alternatives which would accommodate the
proposed development without impacting the stream flowing through the middle of the
site. Several elements of this site plan have been modified previously (grassed overflow
parking areas and building foundation constructed as earth retaining wall) to reduce site
imperviousness and maintain setbacks from streams as well as to provide a substantial
area for the proposed stream channel.
It should be stressed that this project will result in the replacement of an F4/5 stream type
with an E4/5 stream type (see original application narrative). The existing channel has a
history of alteration (notice the straight, ditch-like alignment), which minimizes length
through this site. The proposed channel will increase total length by approximately 75%,
provide a broad functional floodplain where none currently exists, and provide a 7 to 1
wetland mitigation ratio.
STORMWATER MANAGEMENT STRATEGY
As can be seen from the enclosed plan sheet, this site has been designed to disperse, not
concentrate stormwater runoff. There are no stormwater culverts proposed with this
project except for a short length of 10" pipe under a sidewalk. This site is located in a
WS-IV watershed area and has been designed in compliance with the impervious area
limits for these areas. Site imperviousness is 23.8%. The total area of this project site is
5.53 acres. All of the site impervious area is located in a 4.29 acre area on the north side
of Candy Lane; the remaining 1.24 acres is located to the south of Candy Lane and will
remain vacant.
There are four drainage subbasins on this project site, three of these discharge to
vegetated buffer areas through grassed swales (see attached stormwater subbasin map).
The drainage areas and 10-year design discharges (in parentheses) for subbasins 1,2, and
3 are 0.37 acres (1.2 cfs), 0.38 acres (1.68 cfs), and 0.65 acres (1.8 cfs) respectively. The
forth subbasin is 1.25 acres with a design 10-year discharge of 6.54 cfs. This area has
been designed to sheet flow into the constructed wetland and floodplain area adjacent to
the proposed relocated stream. The sheetflow perimeter is approximately 480 feet long.
The design 10-year average rate of flow along this perimeter would be 0.012 cfs.
We feel that overall this site will result in a net benefit to water quality over time
primarily do to three factors:
(1) The stream relocation aspect of this project will result in the addition of 280 linear
feet of channel. The new channel will be an E-4/5 type channel as opposed to the
existing F-4/5 channel. From a water quality perspective an E-channel is far
superior to an F-channel in large part due to the presence of a broad functional

floodplain and its increased ability to handle large flows from its watershed (this
should be a particularly valuable asset as this area develops).
(2) The wetland creation aspect of this project will result in the addition of
approximately 6000 square feet of wetlands over what currently exists (approx.
1000 sq. ft. in the bottom of the F-channel). All of the proposed wetlands will
occur within the floodplain of the proposed E-channel enhancing the flood-flow
and pollutant assimilative capacity of this area.
(3) The stormwater management aspect of this project is designed to minimize any
negative impacts from this project by dispersing flows, keeping velocities far
below erosive thresholds, and utilizing swales, buffers and other natural
vegetative practices so as to eliminate the need for perpetual maintenance.
As a final point it should be noted that the stream relocation and wetland creation are
proposed in a highly visible area in the front of this site. With some promotion, this area
will have the potential to demonstrate that stream relocation, wetland creation and
stormwater management can be both functional and attractive in an area where such
examples are virtually non-existent.
CO 2 ?- z
L71",
May 16, 2000
T 1 =ivn of Boom
E'nV Environmental Consulting Services Inc.
Mr. John Vilas
3764 Rominger Road
Banner Elk, NC 28604
Re- Happy Valley Homes Watersbed Requirement
SR 1524 and Candy Lane
Dear John:
Plans for the Happy Valley Homes Assisted Living Center were submitted to the office of
Planning and Inspections on May 12, 2000. Per you request, this property is located in a WS-IV-
PA watershed which allows a maximum of 24% built upon area. for all non residential
development. In reviewing this submittal, the built upon area for this development is 23.8%
which meets this requirement under Article XI II, Watershed Protection, in the Town of Boone
Unified Development Ordinance,
If I can be of further assistance to you, please let me know.
Sincerely,
0p?el daw"AmMrA
Dave C. Weatherman
Development Coordinator
P.O. DRAVVEA 192 • ROONE, NORTH CAROLINA 28807
0
hIA.OM I0%"640 Pw.
(-e) I o-);?! I
COMPENSATORY MITIGATION PROPOSAL
Trillium Residential Services (Happy Valley Homes)
1. Trees and shrubs will be planted in the riparian zone and proposed wetland area at
a density of 500 plants per acre. Species will include Red Maple, Hazel Alder,
Silky or Bankers shrub Willow, and Silky Dogwood. Plant material will consist of
live stakes and 18" to 24" bare root whips.
2. Construction of the proposed channel will be completed in the dry and will occur
as the first phase of site construction. Flows from the existing channel will not be
turned into the new channel until the channel has been stabilized. The NC WRC
has stated that they "do not believe this project will cause significant effects to
waters supporting trout." (see attached letter from Joe Mickey dated 9/10/99) All
reasonable efforts will be made to avoid to the stream or buffer during the
November to April spawning period.
The following monitoring plan for plant survival is proposed:
a. The total number and location, by zone, of trees and shrubs planted in the
riparian zone will be recorded on the As-Built plan to be submitted to
DWQ upon project completion.
b. Trees and shrubs will be counted in years 2,3 and 4 following construction
and survival rate will calculated for each species and reported.
4. The following monitoring plan for macrobenthos and fish recolonization is
proposed:
a. The QUAL-4 method and DWQ Standard Operating Procedures (DWQ,
Environmental Sciences Branch, Ecosystems Analysis Unit, Biological
Assessment Group, Standard Operating Procedures Biological Monitoring
Document) will be used in collecting and evaluating all samples required
by this plan. A DWQ certified lab will be used to evaluate all samples.
b. Samples from 2 locations at the proposed restoration site will be collected
prior to construction. One of these sites will be above the proposed
restoration work and the other within the existing channel to be filled.
c. Upon completion of proposed work samples will be collected at 2 sites in
years 2,3 and 4. One of these sites will be above the restored reach (same
as pre-construction site) and the other within the restored reach. All
sampling sites will be shown on the As-Built plan to be submitted
following construction. Results of sampling will be reported to DWQ
within 6 months of collection.
d. A habitat description will be provided on the DWQ Stream Habitat
Evaluation Form for each sampling site.

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
5 I
1 • ?
NC ENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
December 9, 1999
Trillium Residential Services
1025 Lamb Road
Lexington, North Carolina 22295
Dear Sirs:
Re: Trillium Assisted Living Facility
DWQ #: 990971
Watauga County
An additional extension for response to our 21 September 1999 letter is hereby
granted for your project until July 3, 2000. Since this is the second extension for this
project, no additional extensions will be allowed. If the questions in our 21 September
1999 letter are not answerediri writing by July 3, 2000, then this project will be
withdrawn.
Please call me at 919-733-9646 if you have any questions.
Cc:
John Vilas, E'nV
Winston-Salem DWQ Regional Office
Raleigh Field Office-Corps of Engineers
File Copy
Central Files
Dave Penrose
Jeff Coutu; DWQ

Wetlands/401 Unit 4401 Reedy Creek Road Raleigh, North Carolina 27607
Telephone [phone] FAX # [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post consumer paper
E'nV
=11Vm'01unum 1 W Consu" Services Inc.
December 3, 1999
NC Department of Environment and Natural Resources
Division of Environmental Management
Water Quality Certification Program
4401 Reedy Creek Rd.
Raleigh, NC 27607
Attn: Mr. John R. Domey
RE: DWQ Project# 990971
Dear Mr. Domey:
3764 Rominger Road
Banner Elk, NC 28604
Ph/Fax [phone]
e-mail: [e-mail]
C'
41
On behalf of my client, Trillium Residential Services L.-C., and regarding the above referenced project,
I am requesting an additional seven month extension of the deadline rioted in your 9/21/99 letter to my
client (I had previously requested and received a 6 week extension). The requested extension would
terminate on or about July 3, 2000. This extension is needed to resolve outstanding local government
permitting issues. If additional information is needed at this time please contact me, John Vilas, at 828-
297-6946.
Thank you for your consideration in this matter.
Sincerely,
John C. Vilas
President, E'nV Environmental Consulting Services Inc.

Cc: Mr. Ricky Dodson
Mr. Daniel Tuttle
10/12/1999 10:59 8282976946
' "nV
October 12, 1M
NC Capartra t of Emko ment and Natural Resatuces
Division d En*cwrartlsl Meanage m t
Walar Quolky CaNcellon Program
4401 Reedy Creek Rd.
Raleigh, NC 27607
Altn: W. Jdm R. Domey
RE: DAQ Project # 880971
Deer W. DmW.
PAGE 02
am Romimw Road
awnx Elk NC 2006
PNFac as-2 -aw
otno: onv®eom.rAt
On behalf of rrry dlent, TrE m Reeidenfid Services LLC., and regwdng d a above rakrarmd pr aject,
I a fn reweefing a six vvm k eoctanaicn d the deadline noted in your W1/98 War to my clW t. This
extension a needed to raec*m outdmft local gmerrrr wd pem ttlng how. . If addtiaml Nf inellm
is needed at this lime please conw d ma, John Mim, at 828.2974W46.
Thank you for your onne ideratlon in this ;, otter.
Sirxw*,
1 ??
.John C. vim
Preddle r. EW Erwka rm tal Co wAtlng Services Inc.
CM Mr. Ricky Dodson
Mr. Darrel Tuttle
State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
CERTIFIED MAIL-RETURN RECEIPT REQUESTED
Trillium Residential Services
1025 Lamb Road
Lexington NC 27295
Dear Sirs:
LT!WAA •
A&14
2
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
September 21, 1999
DWQ Project # 990971
Watauga County
The Division of Water Quality has reviewed your plans for the discharge of fill material into 380 linear feet located
at Bamboo Road and Candy Lane in Boone in Watauga County for construction of an assisted living facility. Insufficient
evidence is present in our files to conclude that your project must be built as planned in waters and/or wetlands in
accordance with 15A NCAC 211.0506. Therefore, unless modifications of the proposal are made as described below, we
will have to move toward denial of your 401 Certification as required by 15A NCAC 2H .0507(e) and will place this project
on hold as incomplete until we receive this additional information, we are requesting (by copy of this letter) that the U.S.
Army Corps of Engineers place your project on administrative hold.
Please provide us with information supporting your position that states your project must be constructed as planned
and that you have no practicable alternative to placing fill in these waters and/or wetlands. Specifically can you construct
your project without relocating the stream? A large site plan may help us understand site constraints. Also a wet detention
pond will be needed to handle runoff from this site before it enters surface waters. Finally since the stream is classified as
Water Supply (WS-M a statement from the local government that the water supply rules are being met will be needed to be
provided. Any documentation such as maps and narrative that you can supply to address alternative designs for your project
may be helpful in our review of your 401 Certification. Also this project will require compensatory mitigation as described
in 15A NCAC 2H.0506(h). Your mitigation proposal is insufficient because because:
1) tree species densities to be planted;
2) schedule for stream relocation;
3) a monitoring plan for plant survival as well as macrobenthos and fish recolonization including annual reports
to DWQ; and
4) provision of an as-built plan upon completion. Please contact Mr. Dave Penrose of my staff at 919-733-9502
with regard to these details.
Please respond within three weeks of the date of this letter by sending a copy of this information to me and one
copy to Ms. Jennifer Frye Winston-Salem Regional Office at 585 Waughtown Street Winston-Salem NC 27107. If we do
not heaLfrpm you in three weeks, we will assume that you no longer want to pursue this project and we will consider the
project as withdrawn. I can be reached at 919-733-9646 if you have any questions.
i cerely,
o R. Do y
cc: Winston-Salem DWQ Regional Office
Wilmington Office Corps of Engineers
Central Files
John Dorney
Raleigh Field Office Corps of Engineers
John Vilas; Environmental Consulting Services
Dave Penrose
Jeff Coutu; DWQ
990971.nty
Wetlands/401 Unit 1621 Mail Service Center Raleigh, North Carolina 27699-1621
Telephone [phone] FAX # [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post consumer paper

n

4 ` E?•

k [[I?t 4
W J am, ? a- COPY
111\131-1 I
® North Carolina Wildlife Resources Commission®
512 N. Salisbury Street, Raleigh, North Carolina 27604-1188, 919-733-3391
Charles R. Fullwood, Executive Director
MEMORANDUM
TO: Steve Chapin, Permit Coordinator
Asheville Office, U.S. Army Corps of Engineers
FROM: Joe H. Mickey, Jr., Stream Restoration Coordinator
Habitat Conservation Program
1t12t1 signed
DATE: September 10, 1999 Joe W&PIV
SUBJECT: Review of an application by Trillium Residential Services, LLC, to relocate an unnamed tributary
to the East Fork New River in order to construct the Deercroft Assisted Living Facility, Watuaga
County.
Mr. John Vilas, En'V Environmental Consulting Services, Inc., on behalf of his client, Trillium Residential
Services, is requesting a letter of concurrence from the North Carolina Wildlife Resources Commission (NCWRC)
to obtain a 404 permit from the U.S. Army Corps of Engineers. The NCWRC has reviewed information provided
by the applicant, and field biologists on our staff are familiar with habitat values of the project area. These
comments are provided in accordance with provisions of the Clean Water Act of 1977 (33 U.S.C. 466 et. seq.) and
the Fish and Wildlife Coordination Act (48 Stat. 401, as amended; 16 U.S.C. 661-667d).
The applicant proposes to fill approximately 380 feet of stream channel and construct a new channel of
approximately 660 feet in length. The new "E" channel is designed according to "Applied River Morphology"
(Ro.sgen 1996). The new channel has been designed to reconnect the stream to its floodplain and create a stable
riparian corridor with wetlands. At the approximate midpoint of the channel a culverted crossing will be installed
for the entrance drive.
Based on the information provided by the applicant and our information on the range of trout in the project
area, we do not believe this project will cause significant effects to waters supporting trout. Therefore, we do not
object to the project as proposed in the submitted plan. We are pleased a new, longer stream channel will be
constructed that maintains proper dimension, pattern and profile and adjacent wetlands. We are also pleased with
the applicant's proposal to use a 3 culvert road crossing system. One 30" culvert to carry bankfull discharge and two
42" culverts installed above and to the sides of the 30" culvert to carry excess bankfull flows.
Thank you for the opportunity to review and comment on this project. If you have any questions regarding
these comments, please contact me at 336/366-2982.

cc: John Vilas, applicant's agent
*- ohn Dorney, DWQ
MEMORANDUM
TO: John Dorney Regional Contact: Jennifer Frye
Non-Discharge Branch WO Supervisor: I arry Coble
Date: Q/1 pia
SUBJECT: WETLAND STAFF REPORT AND RECOMMENDATIONS
Facility Name Trillium Residential Services
Project Number 99 0971
Recvd From APP
Received Date 8/31/99 Recvd By Region 9/9/99
Project Type residential
County Watauga
County2
Region Winston-Salem
Certificates Stream
Permit Wetland Wetland Wetland Stream Class Acres Feet
Type Type Impact Score Index Prim. Supp. Basin Req. Req.
F26 F P7 OO N F 10-1-3 wsiv F__ 71,701. 6-62F
F_ ON F
Mitigation Wetland
MitigationType Type Acres Feet
Create r- 0.16 660.00
Is Wetland Rating Sheet Attached? 0 Y 0,N Did you request more info? 0 Y 0 N
Have Project Changes/Conditions Been Discussed With Applicant? 0 Y 0 N
Is Mitigation required? 0 Y O N Recommendation: 0 Issue O Issue/fond 0 Deny
Provided by Region: Latitude (ddmmss) 36°12'8" Longitude (ddmmss) 81°39'26"
Comments:
1. If this is considered "commercial prosy", issue of stormwater management needs to be
addressed- Since they are creating 7000 square feet of riparian wetlands, this may be sufficient to
abate storm flows
?_ Relocation needs to be coordinated with Wildlife Resources Commission.
Recommend that work utilize existing channel bed and bank materials and native vegetation
when possible
d Recommend the minimization of fertilizers adjacent to channel.
CONTINUED -----NEXT PAGE
cc: Regional Office Page Number 1
Central Office
C-- 41]?
Er?virlonmental Consulting ServkeS Inc.
3764 Rominger Road
Banner Elk, NC 28604
Ph/Fax [phone]
e-mail: [e-mail]
August 25, 1999 '
NC Department of Environment and Natural Resources WETLANDS G fi?tl .
Division of Environmental Management WATER UALITY SECTION
Water Quality Certification Program
4401 Reedy Creek Rd.
Raleigh, NC 27607
To Whom It May Concern:
Included in this packet are seven copies of the PCN Application for the Trillium Assisted Living Facility
in Boone NC. A check in the amount of $475.00 is included to cover the permit fee. John Vilas with
E'nV Environmental Consulting Services Inc. is the listed agent for the owner/applicant; a letter of
authorization is included. All questions regarding the application may be directed to Mr. Vilas at 828-
297-6946.
Please let us know if any additional information is required, Thank you.
Sincerely,
ZnC.las
President, E'nV Environmental Consulting Services Inc.
PAYMENT
RECEIVED
. f - .
DEM ID: CORPS ACTION ID:'
NATIONWIDE PERMIT REQUESTED (PROVIDE NATIONWIDE PERMIT #):
PRE-CONSTRUCTION NOTIFICATION APPLICATION
FOR NATIONWIDE PERMITS THAT REQUIRE:
1) NOTIFICATION TO THE CORPS OF ENGINEERS
2) APPLICATION FOR SECTION 401 CERTIFICATION
3) COORDINATION WITH THE NC DIVISION OF COASTAL MANAGEMENT
SEND THE ORIGINAL AND (1) COPY OF THIS COMPLETED FORM TO THE APPROPRIATE
FIELD OFFICE OF THE CORPS OF ENGINEERS (SEE AGENCY ADDRESSES SHEET). SEVEN
(7) COPIES SHOULD BE SENT TO THE N.C. DIVISION OF ENVIRONMENTAL MANAGEMENT
(SEE AGENCY ADDRESSES SHEET). PLEASE PRINT.
1. OWNERS NAME : / X21 LL ! cA nj K S i ?? E?TI.k L ?` J? 1/ic r?S G• L•
2. MAILING ADDRESS: ' 14A15 ko,+o
SUBDIVISION NAME:
CITY: L c-wo J& i O•y STATE:
Ive-
ZIP CODE: aL? z?l S
' PROJECT LOCATION ADDRESS, INCLUDING SUBDIVISION NAME (IF DIFFERENT FROM
MAILING ADDRESS ABOVE):
E OLVK?o0 ?_o c%_J - 1 cpo Ke (Jl1
3. TELEPHONE NUMBER (HOME) : (WORK): ?b - AS 3 " T6 3
4. IF APPLICABLE: AGENT'S NAME OR RESPONSIBLE CORPORATE OFFICIAL, ADDRESS,
PHONE NUMBER:
T_?,?^ V Jct_ s A f-- h lz op, otc, mg yj, -sl 4-,.i c 5ef`?.,-(,c s 1,rt C
5. LOCATION OF WORK (PROVIDE A MAP, PREFERABLY A COPY OF USGS TOPOGRAPHIC
MAP OR AERIAL PHOTOGRAPHY WITH SCALE):
rAiAaCA NEAREST TOWN OR CITY: own ?. A/C
COUNTY : Wcd
1
SPECIFIC LOCATION (INCLUDE ROAD
NUMBERS LANDMARKS', ETC.): TA a ?,,J a
1.
o,+ 4e- nos-4eu-s+ Corner BT 7 i???2i SpC??ZJ? o? a'?+^'??av ?Oacl
aA. a Y I-w^P- i^ 130ote , AJG. AG/'os'S
T STREAM/RIVER: l A v- n "n" j 41" h- 40 E G`S1 P/'/<
6. IMPACTED OR NEARES
RIVER BASIN: Soa b Fick M j 7a. IS PROJECT LOCATED NEAR WATER CLASSIFIED AS TROUT, TIDAL SALTWATER
(SA), HIGH QUALITY WATERS (HQW), OUTSSTANjINIFREYES, SOURCE WATERS (ORW), WATER
SUPPLY ??++ (WS-I OR WS-II)? , YES T[ ] 1
LG?S lZ?F`? is o,, p?S' it?l'I' / 11f7w1 S?KcJlY1?
ads T?" PA
7b. IS THE PROJECT LOCATED WITHIN A NORTH CAROLINA DIVISION OF OASTAL
MANAGEMENT AREA OF ENVIRONMENTAL CONCERN (AEC)? YES [ ] NO [ )
7c. IF THE PROJECT IS LOCATED WITHIN A COASTAL COUNTY (SEE PAGE 7 FOR
LIST OF COASTAL COUNTIES), WHAT IS THE LAND USE PLAN (LUP) DESIGNATION?
/VA
8a. HAVE ANY SECTION 404 PERMI S BEEN PREVIOUSLY REQUESTED FOR USE ON
THIS PROPERTY? YES [ ] NO IF YES, PROVIDE ACTION I.D. NUMBER OF
PREVIOUS PERMIT AND ANY ADDITIO INFORMATION (INCLUDE PHOTOCOPY OF 401
CERTIFICATION):
8b. ARE ADDITIONAL PE IT REQUESTS EXPECTED FOR THIS PROPERTY IN THE
FUTURE? YES [ ] NO IF YES, DESCRIBE ANTICIPATED WORK:
9a. ESTIMATED TOTAL NUMBER OF ACRES IN TRACT OF LAND:o Qc?S
9b. ESTIMATED TOTAL NUMBER OF ACRES OF WETLANDS LOCATED ON PROJECT SITE:
0.' fccAQS /OCc?+?cX l'l 104W $flb+' A i?'d?S u/?c1 Qc gs c9T 5,6L.-JI ?t-
t (h?atie? ?arr1<<-t "M ?c1/?G?? Lcc^-e. .
J 2
10a. NUMBER OF ACRES OF WETLANDS IMPACTED BY THE PROPOSED PROJECT BY:
FILLING: /000 So. EXCAVATION :
FLOODING:
DRAINAGE:
OTHER:
TOTAL ACRES TO BE IMPACTED : 0-'0,2 OCC
10b. (1) STREAM CHANNEL TO BE IMPACTED BY THE PROPOSED PROJECT (I£
RELOCATED, PROVIDE DISTANCE BOTH BEFORE AND AFTER RELOCATION):
LENGTH BEFORE: 3 go FT AFTER: 660 - FT
WIDTH BEFORE (based on normal high water contours): WgkF *. FT
WIDTH AFTER: S.a W gkF - 0 FT
AVERAGE DEPTH BEFORE: Dg??r D. FT AFTER: Dkkt 0. 8S FT
. (2) STREAM CHANNEL IMPACTS WILL RESULT FROM: (CHECK ALL THAT APPLY)
OPEN CHANNEL RELOCATION: xPLACEMENT OF PIPE IN CHANNEL:
CHANNEL EXCAVATION: CONSTRUCTION OF A DAM/FLOODING:
OTHER:
11. IF CONSTRUCTION OF A POND IS PROPOSED, WHAT IS THE SIZE OF THE
WATERSHED DRAINING TO THE POND? AA4
WHAT IS THE EXPECTED POND SURFACE AREA? AIA
12. DESCRIPTION OF PROPOSED WORK INCLUDING DISCUSSION OF TYPE OF
MECHANICAL EQUIPMENT TO BE USED (ATTACH PLANS: 8 1/2" X 11" DRAWINGS
ONLY):

13. PURPOSE OF PROPOSED WORK:
S C.-, '. -W C' r- tV'?j t
3
14. STATE REASONS BELIEVED MINIMIZE WETLANDCARRIED
OUT IN WETLANDS.
IMPACTS):
e j DO
rn tcc?'S ?- W to ci
/w w'

15. YOU ARE REQUIRED TO CONTACT THE U.S. FISH AND WILDLIFE SERVICE
(USFWS) AND/OR NATIONAL MARINE FISHERIES SERVICE (NMFS) (SEE AGENCY
ADDRESSES SHEET) REGARDING THE PRESENCE OF ANY FEDERALLY LISTED OR
PROPOSED FOR LISTING ENDANGERED OR THREATENED SPECIES OR CRITICAL HABITAT
IN THE PERMIT AREA THAT MAY BE AFFECTED BY THE PROPOSED PROJECT.-
ATTACH RESPONSES
CONTACTED:
FROM THESE AGENCIES.)
16. YOU ARE REQUIRED TO CONTACT THE STATE HISTORIC PRESERVATION OFFICER OF HISTO (ROPE) (SEE
WHICH MAYREGARDING
AFFECTEDRBYETHE PROPOSEDRIC
INAGENCY PERRMITSAREASHEET)
PROPERTIES
PROJECT. DATE CONTACTED:
17. DOES THE PROJECT INVOLVE AN EXPENDITURE OF PUBLIC FUNDS OR THE USE OF
PUBLIC (STATE) LAND?-
YES [I NO X (IF NO, GO TO 18)
a. IF YES, DOES
THEEREPROJECT QU REMENTSREQUIRE
THEENORTHICAROLINA ENVI ONMENTAL
DOCUMENT PURSUANT
POLICY ACT?
YES [ ] NO [ I
b. IF YES, HAS THE DOCUMENT BEEN REVIEWED ETHROUGH THE NORTH CAROLINA
DEPARTMENT OF ADMINISTRATION
YES [ ] NO [
IF ANSWER TO 11b IS YES, THEN SUBMIT APPROPRIATE DOCUMENTATION FROM THE
STATE CLEARINGHOUSE
THE NORTH CAROLINA ENVIRONMENTAL AGEMENT
COMPLIANCE WITH
QUESTIONS REGARDING THE STATE CLEARINGHOUSE REVIEW PROCESS SHOULD BE
DIRECTED TO MS. CHRYS BAGGETT, DIRECTOR STATE CLEARINGHOUSE, NORTH
CAROLINA DEPARTMENT DMI ISTRATION(919) WESTJONES STREET, RALEIGH,
NORTH CAROLINA 2
4
18. THE FOLLOWING-ITEMS SHOULD BE INCLUDED WITH THIS APPLICATION IF
PROPOSED ACTIVITY INVOLVES THE DISCHARGE OF EXCAVATED OR FILL MATERIAL
INTO WETLANDS:
a. WETLAND DELINEATION MAP SHOWING ALL WETLANDS, STREAMS, LAKES
AND PONDS ON THE PROPERTY (FOR NATIONWIDE PERMIT NUMBERS 14, 18, 21, 26,
29, AND 38). ALL STREAMS (INTERMITTENT AND PERMANENT) ON THE PROPERTY
MUST BE SHOWN ON THE MAP. MAP SCALES SHOULD BE 1 INCH EQUALS-50 FEET OR 1
INCH EQUALS 100 FEET OR THEIR EQUIVALENT.
b.• IF AVAILABLE, REPRESENTATIVE PHOTOGRAPH OF WETLANDS TO BE
IMPACTED BY PROJECT.
C. IF DELINEATION WAS PERFORMED BY A CONSULTANT, INCLUDE ALL DATA
SHEETS RELEVANT TO THE PLACEMENT OF THE DELINEATION LINE.
d. ATTACH A COPY OF THE STORMWATER MANAGEMENT PLAN IF REQUIRED.
e. WHAT IS LAND USE OF SURROUNDING PROPERTY?
+. m" 11" -
I k
f. IF APPLICABLE, WHAT IS PROPOSED METHOD OF SEWAGE DISPOSAL?

g. SIGNED AND DATED AGENT AUTHORIZATION LETTER, IF APPLICABLE. ?nclcc?(¢?J
NOTE: WETLANDS OR WATERS OF THE U.S. MAY NOT BE IMPACTED PRIOR TO:
1) ISSUANCE OF A SECTION 404 CORPS OF ENGINEERS PERMIT,
2) EITHER THE ISSUANCE OR WAIVER OF A 401 DIVISION OF
ENVIRONMENTAL MANAGEMENT (WATER QUALITY) CERTIFICATION, AND
3) (IN THE TWENTY COASTAL COUNTIES ONLY), A LETTER FROM THE
NORTH CAROLINA DIVISION OF COASTAL MANAGEMENT STATING THE PROPOSED
ACTIVITY IS CONSISTENT WITH THE NORTH CAROLINA COASTAL MANAGEM$NT
PROGRAM. %
C V h nvArc?lnsn
OW ER' S GENT' S SIGNATURE ? SnruZeS
4A C. ?S
(AGENT'S SIGNATURE VALID ONLY
IF AUTHORIZATION LETTER FROM
THE OWNER IS PROVIDED (18g.))
DATE
5
THE TRILLIUM RESIDENTIAL SYSTEMS, L.L.C.
1025 LAMB ROAD
LEXINGTON, NC 27295
[phone]
August 19, 1999
To Whom It May Concerti:
Please a31ow this letter to stave as official authorization for E'nV Environmental Consulting
Services Inc. to act as agent for Trillium Residential Services L.L.C. for the purpose of
applying for permits and addressing permit elated issues associated with the dcvelopmcnt
of an assisted living facility at the comor of Bamboo Road and Candy Lane in Boone, NC.
Sincerely,
Daniel W. Tuttle
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TRILLIUM PERMIT APPLICATION
ATTACHMEENT1
12: Description of proposed work - The project site is located at the edge of the floodplain for East Fork, a
major tributary of the South Fork of the New River. Two small tributaries flow through the site, the larger
of these (drainage area = 140 acres) flows parallel to Candy Lane along the southern end of the site and will
not be impacted except for the immediate area of the tie-in of the proposed channel. A 30 foot wide mostly
undisturbed no-fill zonetbuffer will be maintained along this larger tributary. The other tributary drains
approximately 100 acres and flows through the middle of the site. This smaller tributary is proposed to be
relocated to flow around the perimeter of the site to facilitate construction of an assisted living facility. The
only wetlands on the site are located on low flats in the two tributary channels. Wetland impacts are
confined to those areas within the channel to be filled and are estimated to be approximately 1000 sq. ft.
The project will involve the filling of approximately 380 linear feet of an existing stream channel. A new
channel of approximately 660 feet in length will be constructed to replace the existing channel. The
proposed channel is designed as an "E" channel according to the criteria in "Applied River Morphology"
(Rosgen, 1996). Channel specifications are noted in the table below. The proposed work will involve the
grading out of a broad floodplain through which the new channel will be excavated. The floodplain will
extend out from bankfull elevation to provide a flood prone area width 30 to 100 feet wide. The primary
method of stabilization for the proposed channel will be to install six to ten inch thick sod mats on the side
slopes along both sides of the entire length of channel. The sod mats will be harvested from the project site.
The sod mats will be covered with light or medium duty erosion control matting and staked in using
willow, dogwood and other types of stakes. The floodplain area will be seeded and landscaped with wet
tolerant trees and shrubs.
At the approximate midpoint of the proposed channel a culverted crossing will be installed for the entrance
drive. A three culvert system is proposed; a 30" culvert will be placed in the streambed to carry the
bankfull discharge (approx. 20 cfs) and two 42" culverts will be installed above and to the sides of the 30"
pipe (see detail). Flows in excess of bankfull will be passed through the 42" pipes.
Standard construction equipment (bulldozer, trackhoe, backhoe) will be used to build the new channel; it is
not anticipated that any specialized equipment will be required. The installation of the proposed channel
will be the first phase of construction. Flow will not be turned into the channel until all initial stabilization
measures have been installed Erosion control measures will be installed and maintained along the existing
channel until flow is diverted to the new channel.
13: Purpose of Proposed Work - The purpose of the stream relocation is to provide an area on which to
construct the Deercroft Assisted Living Facility. The small tributary flowing through the middle of the site
is located such that there is not room to develop the site unless it is moved or piped The existing stream is
classified as an "F " stream type (Rosgen, 96). It is likely that this stream was altered in the past to facilitate
agricultural land uses and other development. This likely alteration is evidenced by the straight-line
configuration of both streams on this tract. In addition to being straightened the stream is severely
entrenched (entrenchment ratio 1.6) through the proposed project site. Bank erosion is light to moderate, at
the present time, but as the watershed develops over the next decade, bank erosion is likely to become more
severe.
The proposed project will relocate the stream to a broad floodplain corridor around the perimeter of the
site. The proposed channel will be a type "E" channel (Rosgen, 96). Total stream length through the site
will increase from 380 feet to 660 feet (includes a 45 foot culvert section). The proposed stream will
meander through this corridor, the flood prone area will extend out from the channel at bankfull stage
(Bankfull/Bankheight Ratio = 1). Much of the flood prone area is designed to be wetland, particularly in
the portion of the site below the proposed driveway. In the long run it is anticipated that this project will
result in an improvement of the stream and riparian corridor through the site.
This project will restore a more natural configuration to a previously altered channel,. It has been designed
to reconnect the stream to its floodplain and create stable riparian corridor with wetlands. The project
should result in a channel which is better able to accommodate future, development induced, changes in
flow regime while retaining the water quality enhancing characteristics of a stable "E" type stream and
associated floodplain. To the extant practicable stormwater runoff from the developed area will be
discharged into the wetland area; this should serve to reduce impacts to water quality from this
development.
VARIABLES EXISTING CHANNEL PROPOSED CHANNEL
Stream Type F4, F5 E4, E5
Drainage Area 100 ac. 100 ac.
Bankfull Width Wbk 7.75 feet 6.0 feet
Bankfull Mean Depth (Dbkt) 0.67 feet 0.85 feet
Width/Depth Ratio Wbkf/Dbk 11.6 7.1
Bankfull Area (Abkf) 5.2 .ft. 5.1 .ft.
Bankfull Max Depth (Dmax) 1.5 feet 2.0 feet
Flood Prone Area Width W a 12.5 feet 49 feet
Entrenchment Ratio
W a/Wbk 1.6 8.2
Meander Length m Straight ditch Mean 80 feet, range 60 - 100
Ratio m/Wbk na 13.3
Radius of Curvature c na Mean 22 feet, range 14 35
Ratio Rc/Wbk na 3.7
Belt Width Wblt na Mean 25, range 15 - 30
Meander Width Ratio
Wblt/Wbk Na 4.2
Sinuosity (k)
stream length/valley length) 1.0 1.65
Valley Slope ft/ft 0.015 0.02
Avg. Slope Sav = Svalle /k 0.015 0.012
Pool Slope (Spool) 0.0063 0.0022
Riffle Slope Sriffj 0.023 0.021

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TRILLIUM PROJECT
EXISTING CHANNEL SECTION
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TRILLIUM PROJECT

PROPOSED CHANNEL TYPICAL SECTION
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mean depth = 0.67'
max depth = 1.45'
area = 5.2 sq.ft.
Wbkf = 7.75'
W/D =11.57
Wfpa = 12.5'
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max depth = 1.8'
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W/D = 6.9
area = 5.2 sq.ft.
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