20011114 Ver 1_COMPLETE FILE_20010720

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Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Gregory J. Thorpe, Ph.D.
Acting Director
Division of Water Quality
Division of Water Quality
August 29, 2001
CERTIFIED MAIL: 7099 3400 0006 9313 6307
Return Receipt Requested
Mr. Keith Kime
J.K.M. Developers
3246 Swepsonville-Saxapahaw
Graham, NC 27253
SUBJECT: APPROVAL of 401 Water Quality Certification with Additional Conditions
Coble Estates
DWQ Project # 01 1114
Alamance County
Dear Mr. Kime:
You have our approval, in accordance with the attached conditions (WQC #3289) and the
conditions listed below, to discharge fill into 358 linear feet of three unnamed tributaries to
Varnals Creek, Class C NSW Waters, Cape Fear River Basin for the purpose of constructing four
road crossings for the Coble Estates subdivision, Alamance County. The activity must be
conducted as indicated in your application that included Five Wetland Impact Survey Sheets
(Landmark Surveying, Inc. 4/4/01) and the additional information received in the WSRO on
8/27/01.
This approval is only for the impacts listed above and for the activities that you described
in your application received by the Division of Water Quality on July 20, 2001 and in additional
correspondence received on August 27, 2001. We have determined that General Water Quality
Certification Number 3289 covers this fill activity. This Certification allows you to use
Nationwide Permit Number 14 when issued by the US Army Corps of Engineers. Please keep in
mind that there may be additional Federal, State and Local regulations applicable to your project,
such as the Sedimentation and Pollution Control Act, Non-Discharge and Water Supply
Watershed Regulations, whereby you may be required to obtain permits and/or approvals prior to
beginning your project. In addition, this approval will expire when the accompanying 404
Permit expires unless otherwise specified in the General Certification.
This approval is only valid for the purposes and designs that you described in your
application and subsequent correspondence dated August 27, 2001. If you change your project,
you must notify the Division in writing and you may be required to submit a new application for
a new Certification. If the property is sold, the new owner must be given a copy of the
Certifications and approval letter and is thereby responsible for complying with all conditions.
N. C. Division of Water Quality
585 Waughtown Street Winston Salem, NC 27107
Plione [phone]; Fax [phone]; Internet http://wq.ehnr.state.nc.us
Customer Service
1 800 623-7748

Coble Estates
Page 2
If total wetland fill for this project (now or in the future) exceed one acre, compensatory
mitigation may be required as described in 15A NCAC 2H .0506(h). For this approval to be
valid, you must follow the conditions listed in the attached Certifications and the additional
conditions listed below:
1. Deed notifications or similar mechanisms shall be placed on all lots with remaining
jurisdictional wetlands and waters or areas within 50 feet of all streams and ponds. 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. A sample deed notification can be downloaded
from the 401/Wetlands Unit web site at http://h20.enr.state.nc.us/ncwetlands.
2. As-built plans and the attached Certificate of Completion (COC) must be submitted to the
Division upon final construction of the road crossings.
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 from the date of receipt of this letter. To
request a hearing, send a written petition that conforms to Chapter 150B of the North Carolina
General Statutes to the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh,
NC 27699-6714. This Certification and its conditions are final and binding unless you request a
hearing.
This letter completes the review of DWQ Project #01 1114 by the Division of Water
Quality under Section 401 of the Clean Water Act. If you wish to review any of the Water
Quality Regulations mentioned here, you can download a copy through the 401/Wetlands Unit
web site at htip://h20.enr.state.nc.us/ncwetlands. If you have any questions, please contact Mrs.
Jennifer Frye at 336-771-4600, ext. 275 or Mrs. Cyndi Karoly at 919-733-9721.
Sincerely,
Gregory J. Thorpe, Ph.D.
Acting Director, Division of Water Quality
Attachments: GC # 3289 (6/1/00), COC
cc: Wendell Overby, S&EC, PMB 291, 3020-I Prosperity Ch. Rd., Charlotte, NC 28269-7197
John T. Thomas, Raleigh Regulatory Field Office, USACE
Wetlands/401 Unit Central Office
Central Files/ WSRO
Re: 01 1114, Coble Estates, Alamance County
Subject: Re: 011114, Coble Estates, Alamance County
Date: Sat, 01 Sep 2001 14:21:03 -0400
From: John Dorney <[e-mail]>
To: Jennifer Frye <[e-mail]>
CC: Rob Ridings <[e-mail]>
jennifer - please also copy rob on these so he can close out the file. thankx
rob - please handle.
Jennifer Frye wrote:
> 401 Issued 8129101 - see attached.
> Jennifer Serafin Frye
> Division of Water Quality
> NC Department of Environment and Natural Resources
> Winston-Salem Regional Office
> Winston-Salem, NC 27107
> Voice. 336-771-4608 ext. 275 Fax: [phone]
> ----------------------------------------re:011114Cobleestatesapproval. ------------------
> tatesapproval.doc
> 011114Cobleestatesapproval.docft Word Document
(applicationlmsword)
> En > Download wnloaded with messa??
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I of 1 9/4/019:47 AM
Soil & Environmental Consultants, PA
PMB 291, 3020-I Prosperity Church Road Charlotte, North Carolina 28269-7197 • Phone: [phone] • Fax: [phone]
www.SandEC.com
Y *y 2 0
t1? ? ? ? ? ? July 18, 201
S&EC #5046
US Army Corps of Engineers-Regulatory
Attn: Mr. John Thomas
6508 Falls of Neuse Road, Suite 120
Raleigh, NC 27615
Dear Mr. Thomas and Mr. Dorney:
NCDENR-DWQ
Attn: Mr. John Dorney
2321 Crabtree Blvd., Ste. 250
Raleigh, NC 27604-2260
The purpose of this letter is to request the use of Nationwide Permit 14 for construction of the
proposed Coble Estates subdivision. The proposed Coble Estates subdivision is located south
of Boy Wood Road west of Preacher Holmes south of Graham, NC (35°59'51.54"N,
79°22'37.21"W). The site is shown on the attached USGS Topo Quad vicinity map.
Construction of the road crossing will comply with all of the general conditions stated within
Nationwide Permit 14.
Proposed impacts to jurisdictional waters will total 0.04 acres for impacts associated with four
road crossings (see map). Proposed impacts to stream channels will involve 357 linear feet (1849
sq. ft.). Because proposed impacts involve less than 150 linear feet per stream, S&EC believes
mitigation should not be required for this project. Minimization and avoidance can be
demonstrated through project design where the proposed road crosses stream channels at previous
farm crossings or fords (see maps). Mr. John Thomas was shown the proposed road crossing
locations. Furthermore the crossings are designed as perpendicular as possible to stream
channels. Project engineers have designed more costly headwalls to minimize the two crossings
on stream "B" (see plans). The width of the fill is limited to the minimum necessary for the
crossing.
Included are: (1) a completed Pre-Construction Notification application, (2) signed Agent
Authorization Form, (3) USGS Site Vicinity Map, (4) Soil Survey Map (5) Site Plans, (6)
Wetland Data Forms, and (7) a check for $475 to NCDWQ for 401 fees.
Please call if you have questions or require further information. S&EC can meet on-site if needed
for confirmation. Please allow a couple of days for scheduling.
Sincerely,
Wendell Overby ,J PAYMENT
wo RECEIVED
Greensboro Office:
3817-E Lawndale Drive
Greensboro, NC 27455
Phone: [phone]
Fax: [phone]
Hickorv Area Office:
710 Boston Road
Taylorsville, NC 28681
Phone: [phone]
Fax: [phone]
Raleigh Office:
11010 Raven Ridge Road
Raleigh, NC 27614
Phone [phone]
Fax: [phone]

0 11114
DWQ ID:
Nationwide Permit Requested (Provide Nationwide Permit ft NW14
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 NC Division of Environmental Management (see agency addresses sheet). PLEASE
PRINT.
1. Owner's Name: Keith Kime
2. Mailing Address: 3246 Swepsonville-Saxapahaw Rd
Subdivision Name: Coble Estates
City: Graham
Corps Action ID:
State: N.C. Zip Code: 27253
Project location address, including subdivision name (if different from mailing address
above): South of Boy Wood Rd, West of Preacher Holmes, south of Graham, NC
3) Telephone Number (Home): (Work): [phone]
4) If applicable, agent's name or responsible corporate official, address, phone
number:
Soil & Environmental Consultants, PA Phone: [phone]
PMB 291, 3020-I Prosperity Ch. Road Fax: [phone]
Charlotte, NC 28269-7197
5. Location of work (provide a map, preferable a copy of USGS topographic map or
aerial photograph with scale):
County: Alamance
Nearest town or city: Graham
Specific Location (include road numbers, landmarks, etc.):
South of Box Wood Rd. west of Preacher Holmes, south of Graham,NC (see attached
USGS vicini ma -
6. Impacted or nearest stream/ river: Varnals Creek
River Basin: Cabe Fear
7a. Is project located near water classified as trout, tidal saltwater, (SA), high quality
waters (HQW), outstanding resource waters (ORW), water supply (WS-1 or WS-
II)? YES NO x . If yes, explain:
7b. If the project is located within a North Carolina division of coastal 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?
8a. Have an Section 404 permits been previously requested for use on this property?
YES ?y NO ® If yes, provide Action ID number of pervious permit and
any additional information (including photocopy of 401 certification).
8b. Are additional permit 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: 190.67
9b. Estimated total number or acres of wetlands located on project site: 4.67
10a. Number of acres of wetlands impacted by the proposed project by:
Filling: 0.04 Excavation:
Flooding: Other:
Drainage: Total acres to be impacted: 0.04
10b. (1) Stream channel to be impacted by the proposed project (if relocated,
provide distance both before and after relocation):
Length before: xing 1=125' xing_2=60' xinp3=66' xing4=107' After: nine
Width Before (based on normal high water contours):
xing 1=10' xing2=3.5' xing3=3.5' xin?4=1.5' Width After: pipe
Average depth before: xingl,23 = 0.2' xing4=.5' After: Dive
(2) Stream channel impacts will result from: (check all that apply)
Open channel relocation: ? Placement 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? N/A.
What is the expected pond surface area? N/A.
12. Description of proposed work including discussion of type of mechanical
equipment to be used (attach plans 81/2" x 11" drawings only):
Grading of upland project area for residential development including construction of
infrastructure including roads using heavy machinery
13. Purpose of proposed work: Construction of residential development on upland areas.
14. State reasons why it is believed that this activity must be carried out in wetlands
(include any measures taken to minimize wetland impacts): For access to upland
areas. Perpendicular crossings Engineered headwalls to minimize impacts.
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. Date contacted: (attach responses from these agencies).
To be done by USACE
16. You are required to contact the state historic preservation officer (SHPO) (see
agency address sheet) regarding the presence of historic properties in the permit
area which may be affected by the proposed project. Date contacted:
To be done by USACE
17. Does the project involve an expenditure of public funds or the use of public (state)
land?
YES ? NO ® If no, go to 18.
a. If yes, does the project require preparation of an environmental document
pursuant to the requirements of the North Carolina Environmental Policy
Act?
YES ? NO
b. If yes, has the document been reviewed through the North Carolina
Department of Administration State Clearinghouse?
YES ? NO ?
If answers to 17b is YES, then submit appropriate documentation from the state
clearinghouse to division of environmental management regarding compliance
with the North Carolina Environmental Policy Act.
Questions regarding the State Clearinghouse review process should be directed to
Ms. Chrys Baggett, Director State Clearinghouse, North Carolina Department of
Administration, 116 West Jones Street, Raleigh, North Carolina 27603-8003,
telephone [phone].
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 used of surrounding property? Residential
f. If applicable, what is proposed method of sewage disposal? On-site septic
g. Signed and dated agent authorization letter, if applicable.
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 Nor Carolina Coastal Management program.
7 ?fA
Owner's/Agent's Si e Date
[Agent's signature valid only if Agent Authorization Letter,from the owner is provided
(18 g.0)]
08/17/00 THU 10:00 FAX [phone] LANDMARK SURVEYING INC X1002/003
08/11/2000 69:39 9198469467 S EC PAGE 02
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Name: SAXAPAHAW Location: 035'59'55.1" N 079' 22'29.5" W
Date: 7/18/2001 Caption: Coble Estates
Scale: 1 inch equals 2000 feet SEC4f5046
QUADS: BURLINGTON, SNOW
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Wetland Delineation Performed By: Soil & Environmental Consultants, Inc.
11010 Raven Ridge Road PMB 291,3020-1 Prosperity Ch. Rd
Raleigh, North Carolina 27614 Charlotte, North Carolina 28269
[phone] [phone]
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: Coble Estates Date: 6 /22/00
Applicant/Owner. Keith Kime County: Alamance
Investigator. W Overby State: NC
Do Normal Circumstances exist on the site? x Yes No Community ID: wetland
Is the site significantly disturbed (Atypical Situation)? Yes x No Transect ID:
Is the area a potential Problem Area? Yes x No Plot ID: flags 1-4
If needed, a lain on reverse.
vWr_PrerrnM
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. Carex sp. Herb OBL 9.
2. Liquidambar styraciflua Tree FAC+ 10.
3. Juncus effuses Herb FACW 11.
4. Dulichium Arundinaceum Herb OBL 12.
5. Eulailia viminea Herb FAC+ 13.
6. Liriodendron tulipifera Tree FAC 14.
7. 15.
8. 16.
Percent of Dominant Species that are OBL, FACW,or FAC
(excluding FAG : 100
Remarks:
uvnani nr_v
Recorded Data: Wetland Hydrology Indicators:
-
-Stream, Lake or Tide Gauge Primary Indicators:
Aerial Photographs x Inundated
Other xSaturated in Upper 12 Inches
-Water Marks
x No Recorded Data Available -Drift Lines
-Sediment Deposits
-Drainage Patterns in Wetlands
Field Observations: Secondary Indicators (2 or more required):
x Oxidized Root Channels in Upper 12 Inches
Depth of Surface Water: 1 (in.) Water-Stained Leaves
Local Soil Survey Data
Depth to Free Water in Pit: 0 (in.) x FAC-Neutral Test
-Other (Explain in Remarks)
Depth to Saturated Soil: 0 (in.)
Remarks:
Wetland Delineation Performed By:
11010 Raven Ridge Road
Raleigh, North Carolina 27614
[phone]
Project/Site: Coble Estates
%n1LS
Plot ID: wetland
Map Unit Name Drainage Class: poorly
(Series and Phase): Wehadkee Field Observations
Taxonomy (Subgroup): Fluvaquentic Endoague pts Confirm Mapped Type? x Yes - No
Profile Description:
Depth Matrix Color Mottle Color Mottle Texture, Concretions,
(inches) Horizon (Munsell Moist) (Munsell Moist) Abundance/Contrast Structure, etc.
0-12 A/B 10YR6/2 SCL
Hydric Soil Indicators:
Histosol -Concretions
_
_Histic Epipedon -High Organic Content in Surface Layer in Sandy Soils
Sulfidic Odor -Organic Streaking in Sandy Soils
_
x Aquic Moisture Regime x Listed on Local Hydric Soils List
x Reducing Conditions x Listed on National Hydric Soils List
x Gleyed or Low-Chroma Colors -Other (Explain in Remarks)
Remarks:
WETLANDS DETERMINATION
Hydrophytic Vegetation Present? _& __Yes _No
Wetland Hydrology Present? x Yes _No
Hydric Soils Present? x Yes _No
Remarks:
Soil & Environmental Consultants, Inc.
PMB 291,3020-1 Prosperity Ch Rd
Charlotte, North Carolina 28269
[phone]
Is this sampling point within a wetland?
x Yes No
Wetland Delineation Performed By: Soil & Environmental Consultants, Inc.
11010 Raven Ridge Road PMB 291,3020-1 Prosperity Ch. Rd
Raleigh, North Carolina 27614 Charlotte, North Carolina 28269
[phone] [phone]
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: Coble Estates Date: 6122/00
Applicant/Owner. Keith IGme County. Alamance
Investigator. W. Overby State: NC
Do Normal Circumstances exist on the site? x Yes No Community ID: mix pine/hw
Is the site significantly disturbed (Atypical Situation)? _Yes x No Transect ID:
Is the area a potential Problem Area? _Yes x No Plot ID: upland
(If needed, explain on reverse.
VFGFTATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. Pinus taeda Tree FAC 9. Juniperus virginiana Tree FACU-
2. Pinus echinata Tree NI 10. Comus florida Shrub FACU
3. Ulmus alata Tree FAC 11.
4. Aoer rubrum Tree FAC 12.
5. Lonicera japonica Vine FAG 13.
6. Quercus alba Tree FACU 14.
7. Liriodendron tulipifera Tree FAC 15.
8. Liquidambar styraciflua Tree FAC+ 16.

Percent of Dominant Species that are O BL, FACW,or FAC
(excluding FAG : 55
Remarks:
HYDROLOGY
-Recorded Data: Wetland Hydrology Indicators:
Stream, Lake or Tide Gauge Primary Indicators:
-Aerial Photographs -Inundated
-Other -Saturated in Upper 12 Inches
-Water Marks
x No Recorded Data Available -Drift Lines
-Sediment Deposits
-Drainage Patterns in Wetlands
Field Observations: Secondary Indicators (2 or more required):
-Oxidized Root Channels in Upper 12 Inches
Depth of Surface Water: n/a (in.) Water-Stained Leaves
-Local Soil Survey Data
Depth to Free Water in Pit: n/a (in.) _FAC-Neutral Test
-Other (Explain in Remarks)
Depth to Saturated Soil: n/a (in.)
Remarks:
Wetland Delineation Performed By: Soil & Environmental Consultants, Inc.
11010 Raven Ridge Road PMB 291,3020-1 Prosperity Ch Rd
Raleigh, North Carolina 27614 Charlotte, North Carolina 28269
[phone] [phone]
Project/Ske: Coble Estates
cnu c
Plot ID: upland
Map Unit Name Drainage Class: well
(Series and Phase): Geor4eville Field Observations
Taxonomy (Subgroup): Topic Hapludult Confirm Mapped Type? x Yes - No
Profile Description.
Depth Matrix Color Mottle Color Mottle Texture, Concretions,
(inches) Horizon (Munsell Moist) (Munsell Moist) Abundance/Contrast Structure, etc.
0-5 Ap 10YR4/4 SiL
5-10 E 10YR515 SiL
10-30 Bt 2.5YR4/8 C
Hydric Soil Indicators:
Histosol -Concretions
_
_Histic Epipedon -High Organic Content in Surface Layer in Sandy Soils
Sulfidic Odor -Organic Streaking in Sandy Soils
_
Aquic Moisture Regime -Listed on Local Hydric Soils List
_Reducing Conditions -Listed on National Hydric Soils List
_Gleyed or Low-Chroma Colors -Other (Explain in Remarks)
Remarks:
WETLANDS DETERMINATION
Hydrophytic Vegetation Present? x Yes No Is this sampling point within a wetland?
Wetland Hydrology Present? Yes x No Yes x No
Hydric Soils Present? Yes x No
Remarks: SOIL 80,

~ - 1
® North Carolina Wildlife Resources Commission
Charles R. Fullwood, Executive Director
MEMORANDUM
TO
FROM:
DATE:
John Dorney, Wetland Scientist
Wetlands/401 Water Quality Certification Unit
vision of Water Q lity
ov a \ ?,,,,
Danielle R. Pender, Pie id Wont Region Coordinator
Habitat Conservation Program
10 September 2001
SUBJECT: Pre-construction Notification Application for Coble Estates Subdivision,
Alamance County, North Carolina. DWQ ID: 011114
Biologists with the North Carolina Wildlife Resources Commission (NCWRC) have
reviewed the subject pre-construction notification. A site inspection was conducted on 30
August 2001 by NCWRC biologists to further assess impacts to fish and wildlife resources. Our
comments are provided in accordance with provisions of the Clean Water Act of 1977 (as
amended), the Fish and Wildlife Coordination Act (48 Stat. 401; as amended; 16 U.S.C. 661-
667d), and North Carolina General Statutes (G.S. 113-131 et seq.).
The applicant proposes to impact 357 linear feet of stream with culverts and fill for
access roads associated with a 191-acre residential development, Coble Estates Subdivision. The
streams that run through the project are tributaries to Varnals Creek. Varnals Creek is a tributary
of the Haw River in the Cape Fear River basin. There are records for the presence of Federal
Species of Concern and state threatened, yellow lampmussel (Lampsilis cariosa) and the state
significantly rare, Eastern creekshell (Villosa delumbis) in the Haw River downstream of its
confluence with Varnals: Creek. In addition to the impacts that will occur due to the road access
points, the site map indicates 38 individual lots that have streams or wetlands within the lot
boundaries. There was no mitigation plan or details for avoidance to streams and wetlands
associated with these individual lots submitted with this application. Stormwater runoff
management plans were also omitted from this application. However, current road construction
Mailing Address: Division of Inland Fisheries • 1721 Mail Service Center • Raleigh, NC 27699-1721
Telephone: [phone] ext. 281 • Fax: [phone]

Page 2
10 September 2001
Coble Estates Subdivision
DWQ ID: 011114
reveals that grass swales will be used rather than curb and gutter, which will help minimize the
overall cumulative impacts of this project.
Stream piping and placing fill in aquatic resources can result in significant negative
impacts to downstream areas and eliminate fish and wildlife habitat. Stream piping reduces the
infiltration of storm water and associated pollutants, as well as the dissipation of stream energy.
Piping a stream and placing it underground obviously removes both aquatic and terrestrial
habitat. Existing uses by wildlife are lost and future opportunities to improve aquatic diversity,
even if water quality improves, are precluded. The loss of pervious substrate due to residential
development may exacerbate. channel degradation due to increased stormwater runoff. However,
we will not object to the project provided that the following recommended conditions are
incorporated into the permit to reduce impacts to fish and wildlife resources.
Remaining wetlands and streams within the Coble Estates Subdivision site should be
protected from additional impacts by placing them in a permanent conservation easement
to prohibit filling, draining, flooding, and excavation.
2. In order to minimize stream impacts, while retaining some measure of wildlife habitat,
we recommend a 100-foot undisturbed, native, forested buffer along perennial streams,
and a 50-foot buffer along intermittent streams and wetlands. Maintaining undisturbed,
forested buffers along these areas will minimize impacts to fish and wildlife resources,
water quality, aquatic habitat both within and downstream of the project area, and help
prevent the extirpation of endangered and threatened species. In addition, wide riparian
buffers are helpful in maintaining stability of stream banks and for treatment of pollutants
associated with urban stormwater. Whereas a grassed buffer, particularly fescue, is a
vegetated buffer, it will not provide the necessary and highly valuable functions offered
by forested buffers.
3. If culverts must be used, the culvert should be designed to allow for aquatic life passage.
Generally, this means that the culvert or pipe invert is buried at least one foot below the
natural streambed. If multiple cells are required, the second and/or third cells should be
placed so that their bottoms are at stream bankfull stage (similar to Lyonsfield design).
This will allow sufficient water depth in the culvert or pipe during normal flows to
accommodate fish movements. If culverts are long, baffle systems are required to trap
gravel and provide resting areas for fish and other aquatic organisms. If multiple pipes or
cells are used, at least one pipe or box should be designed to remain dry during normal
flows to allow for wildlife passage. In addition culverts should maintain stream
dimension, pattern, and profile above and below the culvert. Riprap should not be placed
on the streambed and disturbance of the stream channel must be limited to only what is
necessary to install the pipes. Heavy equipment should be operated from the bank rather
than in the stream channel to minimize sedimentation and reduce the likelihood of
introducing other pollutants into the stream. If concrete will be used, work must be
accomplished so that wet concrete does not contact stream water or wetland areas.
Page 3
10 September 2001
Coble Estates Subdivision
DWQ ID: 011114
4. Stringent erosion control measures should be installed where soil is disturbed and
maintained until project completion. This is especially important in areas adjacent to
streams and wetlands. Temporary or permanent herbaceous vegetation should be planted
on all bare soil within 15 days of ground disturbing activities to provide long-term
erosion control. We encourage the applicant to utilize onsite vegetation and materials for
bank stabilization, to minimize the use of riprap (or hard stabilization methods), and to
maximize the use of native vegetation for stabilization and shade. We request that
matting along with vegetation be used to stabilize the side slopes adjacent to wetlands to
.prevent soil erosion into these sensitive areas.
6. Locate sewers and other utilities as far away from creeks as functionally possible and
minimize stream crossings. It is preferable that sewers be located outside the riparian
buffers.
7. A stormwater management plan should be implemented in order to reduce both the short-
term and long-term impacts associated with the construction of roadways in new
neighborhoods. Stormwater runoff can accelerate erosion of stream banks and scouring
of the stream channel. Additionally, the pollutants (e.g., sediment, heavy metals,
herbicides, pesticides, and fertilizers) washed from roads and urban landscapes can
adversely affect and extirpate species downstream of developed areas. Grassed swales in
place of curb and gutter and on-site stormwater management (i.e. bioretention areas) can
be installed to produce no net change in the hydrology of the watershed and are
recommended. These designs often cost less to install and significantly reduce
environmental impacts from residential development. Many of these recommendations
have been applied in Maryland in efforts to protect the Chesapeake Bay from water
quality degradation.
Thank you for the opportunity to review this pre-construction notice. If you require
further assistance, please contact our office at [phone].
cc: Todd Tugwell, USACOE, Raleigh
E-mail: Jennifer Frye, WSRO
Stephen T. Hall, NHP
WT/drp