20150115 Ver 1_401 Application_20150115

Dewberry
Dewberry Engineers Inc
2301 Rexwoods Drive, Suite 200
Raleigh, NC 27607 -3366
919.881.9939
919.881 9923 fax
www dewberry_com
January 23, 2015
Ms Karen Higgins
NC Division of Water Resources
401 & Buffer Permitting Unit
1650 Mail Service Center
Raleigh, North Carolina 2.7699 -1650
Reference: City of Durham
Green Mill Stream Bank Repairs
Buffer Permit Application
Dewberry Project No. 5oo62103
Dear Ms Higgins
Enclosed are five copies of a Pre - Construction Notification (PCN) Permit Application Package for the City
of Durham Green Mill Stream Bank Repairs Project. For your review we have enclosed five copies of the
PCN Application Form, Attachment A — Additional Information, USGS Quadrangle Map, site photos, site
plan, bank stabilization detail, and the $240 oo application fee
The project titled "Green Mill Stream Bank Repairs" consists of stabilizing the bank of Third Fork Creek
Tributary C in three locations to protect existing sanitary sewer infrastructure and replacing one section of
terra cotta pipe with ductile iron pipe where the terra cotta bell point has become exposed.
The construction described in this permit application will result in approximately 3,383 square feet of
Zone 1 and 5,500 square feet of Zone 2 buffer impacts within a maintained utility easement and 115 linear
feet of stream disturbance. The buffer disturbance is the result of construction access to the repair
locations.
Please contact me with any questions regarding this permit application
Sincerely,
Dewberry Engineers Inc
P \5oo62103 \Adm \Permits \Green Mill \DWQ Cover Letter docx
RECEIVED
Beth Steffens, E
jA" ��l�
Project Manager
GENR-LAND QUA" ? y
Enclosures
STQRMWATER PEFN11Y1R4G
CC: Kenny Willard, City of Durham Water Management
P \5oo62103 \Adm \Permits \Green Mill \DWQ Cover Letter docx

i
F WATe
2 0 1 5 0 1 1 5 office Use Only
Corps action;ID no _
DWQ p �75 0i
Form Version 4 January 2009
Page 1 of 10
PCN Form — Version 14 January 2009
Pre- Construction Notification (PCN) Form
A.
Applicant Information
1.
Processing
1a
Type(s) of approval sought from the Corps
❑X Section 404 Permit ❑ Section 10 Permit
1b Specify Nationwide Permit (NWP) number, 12,13 or General Permit (GP) number
1c
Has the NWP or GP number been verified by the Corpse ® Yes ❑ No
1 d
Type(s) of approval sought from the DWQ (check all that apply),
© 401 Water Quality Certification — Regular ❑ Non -404 Jurisdictional General Permit
❑ 401 Water Quality Certification — Express ❑ Riparian Buffer Authonzabon
le
Is this notification solely for the record
because written approval is not required?
For the record only for DWQ
401 Certification
❑ Yes ❑X No
For the record only for Corps Permit
❑ Yes No
1f
Is payment into a mitigation bank or in -lieu fee program proposed for
mitigation of impacts9 If so, attach the acceptance letter from mitigation bank
or in -lieu fee program
❑ Yes ❑X No
1g
Is the project located in any of NC's twenty coastal counties If yes, answer 1 h
below
El Yes ❑X No
1h
Is the project located within a NC DCM Area of Environmental Concern (AEC)'?
❑ Yes ® No
2.
Project Information
2a
Name of project
Green Mill Utility Maintenance and Stream Bank Stabilization
2b
County
Durham
2c
Nearest municipality / town
City of Durham
2d
Subdivision name
2e,
NCDOT only, T I P or state project no
3.
Owner Information
3a
Name(s) on Recorded Deed
3b
Deed Book and Page No
3c
ae I cabsle Party (for LLC if
pP )
City of Durham (Department of Water Manage n
_�. ,®
3d
Street address
1100 MLK Jr Pkwy a 6t n 1®1 n w�
3e
City, state, zip
Durham, NC 27707 J1 N 2 7 LU iJ
3f
Telephone no,
919 560 4344 DENR -LAND QL Li ,
3g.
Fax no
919 -560 -4340 6 1 ORMWNFER PERIVII STING
3h
Email address
Page 1 of 10
PCN Form — Version 14 January 2009

4.
Applicant Information (if different from owner)
4a
Applicant is
❑X Agent ❑ Other, specify
4b
Name
4c
Business name
(if applicable)
4d
Street address,
4e
City, state, zip
4f
Telephone no
4g
Fax no
4h
Email address
5.
Agent/Consultant Information (if applicable)
5a
Name
Elizabeth B. Steffens, PE
5b
Business name
(if applicable)
Dewberry Engineers Inc.
5c
Street address
2301 Rexwoods Drive, Suite 200
5d
City, state, zip
Raleigh, NC 27607
5e. Telephone no.
984- 232 -6795
5f
Fax no
919 -881 -9923
5g
Email address
esteffens @dewberry corn
Page 2 of 10

B.
Project information and Prior Project History
1.
Property Identification
1 a
Property Identification no (tax PIN or parcel ID)
0810 -20 -82 -2460
1 b
Site coordinates (in decimal degrees)
Latitude 35 954774 Longitude -78 938331
1c
Property size
acres
2.
Surface Waters
2a
Name of nearest body of water to proposed project
Third Fork Creek Tributary C
2b
Water Quality Classification of nearest receiving water
WS- IV,NSW
2c
River basin
Cape Fear
3.
Project Description
3a Describe the existing conditions on the site and the general land use in the vicinity of the project at the time of this
application
See Attachment A - Additional Information
3b.
List the total estimated acreage of all existing wetlands on the property 0
3c
List the total estimated linear feet of all existing streams (intermittent and perennial) on the property
3d Explain the purpose of the proposed project
See Attachment A - Additional Information
3e Describe the overall project in detail, including the type of equipment to be used
See Attachment A - Additional Information
4.
Jurisdictional Determinations
4a
Have jurisdictional wetland or stream determinations by the
Corps or State been requested or obtained for this property /
project (including all prior phases) in the past?
[] Yes ❑ No E9 Unknown
Comments
4b
If the Corps made the jurisdictional determination, what type
of determination was made?
❑ Preliminary ❑ Final
4c
If yes, who delineated the jurisdictional areas9
Name (if known)
Agency /Consultant Company
Other
4d
If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation
5.
Project History
5a
Have permits or certifications been requested or obtained for
this project (including all prior phases) in the past
[]Yes El No Unknown
5b
If yes, explain in detail according to "help file" instructions
6.
Future Project Plans
6a
Is this a phased project?
❑ Yes ❑X No
6b If yes, explain
See Attachment A - Add +tional Information
Page 3 of 10
PC Form —Version 14 January 2009

C. Proposed Impacts Inventory
1. Impacts Summary
1 a Which sections were completed below for your project (check all that apply)
❑ Wetlands ® Streams —tributaries X❑ Buffers ❑ Open Waters ❑ Pond Construction
2. Wetland Impacts
If there are wetland impacts proposed on the site, then complete this question for each wetland area Impacted
2a
Wetland impact
number
Permanent (P) or
Temporary T
2b
Type of impact
2c
Type of wetland
2d,
Forested
2e
Type of jurisdiction
Corps (404,10) or
DWQ (401, other)
2f
Area of
impact
(acres)
W1
Choose one
Choose one
Yes /No
-
W2
Choose one
Choose one
Yes /No
W3 -
Choose one
Choose one
Yes /No
X14 -
Choose one
Choose one
Yes /No
-
W5 -
Choose one
Choose one
Yes /No
Wg -
Choose one
Choose one
Yes /No
2g Total Wetland Impacts.
2h Comments
3. Stream Impacts
If there are perennial or intermittent stream Impacts (including temporary impacts) proposed on the site, then complete this
question for all stream sites Impacted
3a
Stream impact
number
Permanent (P) or
Temporary (T)
3b
Type of impact
3c.
Stream name
3d
Perennial (PER) or
intermittent (INT)?
3e
Type of
jurisdiction
3f
Average
stream
width
(feet)
3g
Impact
length
(linear
feet)
S1 P
Stabilization
Third Fork Creek
PER
DWQ
10
60
S2 P
Stabilization
Third Fork Creek
PER
DWQ
10
40
S3 P
Stabilization
Third Fork Creek
PER
DWQ
10
15
S4
Choose one
-
-
S5
Choose one
S6
Choose one
-
3h Total stream and tributary impacts
115
31 Comments
Stream Crossing will be removed immediately after completion of construction and the area restored to its original conditions
Page 4 of 10
PC Form —Version 1 4 January 2009

4. Open Water Impacts
If there are proposed impacts to lakes, ponds, estuaries, tributaries, sounds, the Atlantic Ocean, or any other open water of
the U S then indiv ually list all open water impacts below
4a
Open water
Impact number
Permanent (P) or
Temporary T
4b
Name of waterbody
(if applicable)
4c
Type of Impact
4d
Waterbody
type
4e
Area of impact (acres)
01
Choose one
Choose
02
Choose one
Choose
03
Choose one
Choose
04
Choose one
Choose
4f Total open water impacts
4g Comments
5. Pond or Lake Construction
if pond or lake construction proposed, the complete the chart below
5a
Pond ID number
5b
Proposed use or
purpose of pond
5c
Wetland Impacts (acres)
5d
Stream Impacts (feet)
5e
Upland
(acres)
Flooded
Filled
Excavated
Flooded
Filled
Excavated
P1
Choose one
P2
Choose one
5f Total:
5g Comments
5h Is a dam high hazard permit required?
❑ Yes ❑ No If yes, permit ID no,
51 Expected pond surface area (acres)
5j. Size of pond watershed (acres)
5k Method of construction
6. Buffer Impacts (for DWA)
If project will Impact a protected riparian buffer, then complete the chart below If yes, then individually list all buffer impacts
below If any impacts require mitigation, then you MUST fill out Section D of this form
6a. Project is in which protected basin?
0 Neuse ❑ Tar - Pamlico ❑ Catawba ❑ Randleman ❑ Other
6b
Buffer Impact
number —
Permanent (P) or
Temporary T
6c
Reason for impact
6d
Stream name
6e
Buffer
mitigation
required?
6f
Zone 1
impact
(square
feet )
6g
Zone 2
impact
(square
feet
131 T
Construction Access
Third Fork Creek
No
1,220
830
B2 T
Construction Access
Third Fork Creek
No
1,540
4,240
B3 T
Construction Access
Third Fork Creek
No
623
430
B4
Yes/No
B5 -
Yes /No
B6 -
Yes/No
6h Total Buffer Impacts:
3,383
5,500
61 Comments The buffer impacts will occur within a maintained sanitary sewer easement
Page 5 of 10

D. Impact Justification and Mitigation
1. Avoidance and Minimization
la Specifically describe measures taken to avoid or minimize the proposed impacts in designing project
See Attachment A - Additional Information
1 b Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques
Impacts to area will be minimized by confining work area to minimum extents possible and using erosion control devices A pump- around or coffer
dams will be used to ensure all work occurs in the dry
2. Compensatory Mitigation for Impacts to Waters of the U.S. or Waters of the State
2a Does the project require Compensatory Mitigation for
impacts to Waters of the U S or Waters of the State?
❑ Yes ❑X No
2b If yes, mitigation is required by (check all that apply)
❑ DWQ ❑ Corps
2c If yes, which mitigation option will be used for this
projects
❑ Mitigation bank
❑ Payment to in -lieu fee program
y p g
❑ Permittee Responsible Mitigation
3. Complete if Using a Mitigation Bank
3a Name of Mitigation Bank
3b Credits Purchased (attach receipt and letter)
Type Choose one
Type Choose one
Type Choose one
Quantity
Quantity
Quantity
3c Comments
4. Complete if Making a Payment to In -lieu Fee Program
4a Approval letter from in -lieu fee program is attached
❑ Yes
4b Stream mitigation requested
linear feet
4c If using stream mitigation, stream temperature
Choose one
4d Buffer mitigation requested (DWQ only)
square feet
4e Riparian wetland mitigation requested
acres
4f Non - riparian wetland mitigation requested
acres
4g Coastal (tidal) wetland mitigation requested
acres
4h, Comments
5. Complete if Using a Permittee Responsible Mitigation Plan
5a If using a permittee responsible mitigation plan, provide a description of the proposed mitigation plan
Page 6 of 10
PCN Form — Version 14 January 2009

6. Buffer Mitigation (State Regulated Riparian Buffer Rules) —required by DWQ
6a Will the project result in an impact within a protected riparian buffer that requires
Yes ® No
buffer mitigation?
6b If yes, then identify the square feet of impact to each zone of the riparian buffer that requires mitigation Calculate the
amount of mitigation required
6c
6d
6e
Zone
Reason for impact
Total impact
Multiplier
Required mitigation
(square feet)
(square feet)
Zone 1
3 (2 for Catawba)
Zone 2
1 5
6f Total buffer mitigation required:
6g If buffer mitigation is required, discuss what type of mitigation is proposed (e g , payment to private mitigation bank,
permittee responsible riparian buffer restoration, payment into an approved in -lieu fee fund)
6h Comments
Page 7 of 10

E. Stormwater Management and Diffuse Flow Plan (required by DWQ)
1.
Diffuse Flow Plan
1a
Does the project include or is it adjacent to protected riparian buffers identified
® Yes ❑ No
within one of the NC Riparian Buffer Protection Rules?
lb
If yes, then is a diffuse flow plan Included? If no, explain why
Protect will not after diffuse flow patterns to the stream
❑ Yes ❑X, No
2.
Stormwater Management Plan
2a. What is the overall percent imperviousness of this project?
0
2b
Does this project require a Stormwater Management Plan?
❑ Yes E9 No
2c
If this project DOES NOT require a Stormwater Management Plan, explain why
Project area is less than 1 acre
2d
If this project DOES require a Stormwater Management Plan, then provide a brief, narrative
description of the plan
2e
Who will be responsible for the review of the Stormwater Management Plan
3.
Certified Local Government Stormwater Review
3a
In which local government's jurisdiction is this project?
City of Durham
❑ Phase II
3b
Which of the following locally- implemented stormwater management programs
❑ NSW
❑ USMP
apply (check all that apply)
❑ Water Supply Watershed
[] Other
3c
Has the approved Stormwater Management Plan vinth proof of approval been
❑ Yes ❑ No
attached?
4. DWQ Stormwater Program Review
❑Coastal counties
❑HQW
4a
Which of the following state - implemented stormwater management programs apply
❑ORW
(check all that apply)
❑session Law 2006 -246
❑Other
4b
Has the approved Stormwater Management Plan with proof of approval been
❑ Yes ❑ No
attached?
5. DWQ 401 Unit Stormwater Review
5a
Does the Stormwater Management Plan meet the appropriate requirements'?
❑ Yes ❑ No
5b
Have all of the 401 Unit submittal requirements been met?
❑ Yes _ ❑ No
Page 8 of 10
PCN Form — Version 1 4 January 2009

F. Supplementary Information
1. Environmental Documentation (DWQ Requirement)
la Does the project Involve an expenditure of public (federal /state /local) funds or the
Yes
El No
use of public (federal /state) land?
lb If you answered "yes" to the above, does the project require preparation of an
environmental document pursuant to the requirements of the National or State
El Yes
® No
(North Carolina) Environmental Policy Act (NEPA/SEPA)?
1 c If you answered "yes" to the above, has the document review been finalized by the
State Clearing House? (if so, attach a copy of the NEPA or SEPA final approval
letter )
❑ Yes
❑ No
Comments
2. Violations (DWQ Requirement)
2a. Is the site in violation of DWQ Wetland Rules (15A NCAC 2H 0500), Isolated
Wetland Rules (15A NCAC 2H 1300), DWQ Surface Water or Wetland Standards,
[]Yes
❑X No
or Riparian Buffer Rules (15A NCAC 213 0200)?
2b Is this an after - the -fact permit application?
❑Yes
❑X No
2c If you answered "yes" to one or both of the above questions, provide an explanation of the violation(s)
3. Cumulative Impacts (DWQ Requirement)
3a. Will this project (based on past and reasonably anticipated future impacts) result in
❑Yes
®No
additional development, which could impact nearby downstream water quality?
3b If you answered "yes" to the above, submit a qualitative or quantitative cumulative impact analysis in accordance with the
most recent DWQ policy If you answered "no," provide a short narrative description
Project will not alter the capacity of the sanitary sewer system
4. Sewage Disposal (DWQ Requirement)
4a Clearly detail the ultimate treatment methods and disposition (non - discharge or discharge) of wastewater generated from
the proposed project, or available capacity of the subject facility
Wetted debris will be collected onto a truck and transported to a City of Durham dewatering facility that will allow for evaporation
of wastewater
collected during this project
Page 9 of 10
PCN Form — Version 1 4 January 2009

5. Endangered Species and Designated Critical Habitat (Corps Requirement)
5a Will this project occur in or near an area with federally protected species or
❑Yes E:1 No
habitat?
5b Have you checked with the USFWS concerning Endangered Species Act
❑Yes El No
impacts?
5c If yes, indicate the USFWS Field Office you have contacted
-
5d What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical
Habitat?
6. Essential Fish Habitat (Corps Requirement)
6a Will this project occur in or near an area designated as essential fish habitat?T
❑ Yes ❑ No
6b. What data sources did you use to determine whether your site would impact Essential Fish Habitat?
7. Historic or Prehistoric Cultural Resources (Corps Requirement)
7a Will this project occur in or near an area that the state, federal or tribal
governments have designated as having historic or cultural preservation
❑ Yes ❑ No
status (e g , National Historic Trust designation or properties significant in
North Carolina history and archaeology)?
7b. What data sources did you use to determine whether your site would impact historic or archeological resources?
8. Flood Zone Designation (Corps Requirement)
8a Will this project occur in a FEMA- designated 100 -year floodplain?
❑X Yes ❑ No
8b If yes, explain how project meets FEMA requirements
This project did not decrease the capacity of the floodplain and malntained flow patterns
8c What source(s) did you use to make the floodplain determination?
FEMA Firm Map #372008100K Effective Date August 2, 2007
C14y A
W 41r.r- /1A
I �Z 2 15
ANDY BKo&PVN
Applicant/Ag is Signature
Applicant/Agent's Printed Name
Date
gent's signature is valid only d an authorization
letter from the applicant Is provided
Page 10 of 10

Attachment A —Additional Information
B.3.3.a Describe existing conditions and land use-
Over time, a nearby stream has cut the bank away exposing a manhole Recent storm events have exposed points
of the terra -cotta line between manholes in the stream bed At two other sites along the stream, stream bank
erosion is threatening to expose the existing sanitary sewer line All the sites are located on an easement that has
been maintained within the last 10 years Land use in the vicinity of the project is residential
B. 3.3.d Explain the purpose of the proposed project
The purpose of the proposed project is to protect the sanitary sewer lines and manholes by relocating the stream
bank around the sewer infrastructure and stabilizing the stream bank to prevent further erosion In addition, a
section of terracotta pipe will be replaced with ductile iron pipe The two other sections of the stream bank that is
starting to erode will be stabilized by the City
B. 3.3.e. Detailed project description including equipment to be used
Natural stream movement has resulted in the movement of a blue line stream directly over a terra -cotta sanitary
sewer line A stream pump around will be established prior to beginning construction to ensure all work occurs in
the dry
The stream bank will be reestablished around the manhole and then stabilized A section of terracotta pipe that is
within the stream bed will be removed from the manhole to across the stream and past the opposite bank
approximately 30 If The disturbed area will be covered with coir matting and reseeded upon completion of
construction
Where the stream bank is eroding away the City will stabilize the bank according to the attached details
Temporary stream crossings will be installed to allow for personnel and equipment access during construction
Traditional construction equipments such as dump trucks and excavators will be used during this project
D.1.a Specifically describe measures taken to avoid or minimize the proposed impacts in designing project.
The placement of rip -rap will be limited to the area immediately surrounding the washout near the exposed bell
joint and will not intrude into the stream Bank stabilization and site restoration elsewhere will be achieved with
coir matting and re- seeding A pump- around will be used during stream relocation to ensure all work occurs in the
dry

Figure 1: Facing north, Location 1. Erosion of the streambank has exposed the entire height
of the sanitary sewer manhole. The clay sanitary sewer pipe crossing the creek is in danger
of becoming exposed. The top of the pipe outlet can be seen at the base of the manhole
(indicated). Fallen trees threaten the integrity of the infrastructure.
Figure 2: Facing east, Location 1. Erosion of the streambank has exposed the entire height
of the sanitary sewer manhole. The clay sanitary sewer pipe is almost exposed within the
creek. Fallen trees threaten the integrity of the infrastructure. Project is located within a
maintained sewer easement.
Green Mill Lane Sewer Replacement and Bank Stabilization

Figure 1: Facing north, Location 1. Erosion of the streambank has exposed the entire height
of the sanitary sewer manhole. The clay sanitary sewer pipe crossing the creek is in danger
of becoming exposed. The top of the pipe outlet can be seen at the base of the manhole
(indicated). Fallen trees threaten the integrity of the infrastructure.
Figure 2: Facing east, Location 1. Erosion of the streambank has exposed the entire height
of the sanitary sewer manhole. The clay sanitary sewer pipe is almost exposed within the
creek. Fallen trees threaten the integrity of the infrastructure. Project is located within a
maintained sewer easement.
Green Mill Lane Sewer Replacement and Bank Stabilization

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CONSTRUCTION ACCESS /
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1 90, S1 APPROXIMATE 0 LF OF b \
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o CONSTRUCTION ACCESS
APPROXIMATE LOCNnON
OF SANITARY-SEWER
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1 SANITARY SEWER
I B2 = 1540 SF ZONE 1 /
4240 SF ZONE 2 /
1
1
I
1 /
1 /
SCALE 1" = 50/
I 50' 25' 0' 50' 100'
ORA�� ® DATE TITLE
9989 Dewberr 01/12/2014 GREEN MILLSTREAM BANK REPAIRS
"ll. Y
Dewberry Engineers, Inc
%WOODS DRIVE PROJ. No.
SUITE 200
REPAIRS SITES 1 AND 2
SUITE 2
RALEIGH, NC 27007 50062103
PHONE [phone]
FAX [phone]
NCSELS # F 0929
/
AP ROXIMATE LOCATION
Of STREAM BANK
= APPROXIMATE 40
:AM BANK REPAIR
SHEET NO.
1
%I

c
29
O J,
B3 = 623 SF ZONE 1
\ 430 SF ZONE 2
SITE ACCESS
CA R
=o,oFESSio•,�ti9i 0�
'a SEAL
43 96 _
G1 �
71411111 ii ``
/
APPROXIMATE SEAR
OF
SANITARY SEWER
1
SS
q+/+
ar
63
S3 = APPROXIMATE 20 LF OF
STREAM BANK REPAIR
APPROXIMATE LOCATION OF
STREAM BANK
SS
APP OXIMATE LOCATION
OF S
1
1
\SC1" 330'
30' 15' 0' 30' 60'
r`•••,, ® DATE TITLE
'�•�•�'
y01/12/2014 GREEN MILL STREAM BANK REPAIRS D e wb e r r
F,�•�•�
Dewberry Engineers, Inc
SUITE2
XWOODS DRIVE PROS. No. REPAIRS SITE 3
SUITE 200
RALEIGH 7 50062103
PHONE [phone] 9939
FAX [phone]
NCBELS # F 0929
Ss
— o
rn
m --a
SHEETnN,' Q:,
.-41 t
t+.s
Cz
i Z4 �2

APPROXIMATE EXISTING GROUND
TIE TO GRADE
NOTES
1. RIP RAP AND GEOTEXTILE ALONE SHOULD NOT BE USED ON SLOPES GREATER THAN 2H:1V.
.5 T MIN
111 I B 1 111
r`•••,, Dewberry ® DATE TITLE SHEEP NO
's•*• +' 01/12/2014 GREEN MILL STREAM BANK REPAIRS 3
Dewberry Engineers, Inc
2301 REXWOODS DRIVE PROJ No
SUITE 200 BANK STABILIZATION DETAIL
RALEIGH 7
PHONE 9119988188199939 50062103
FAX [phone]
N(:RFI C A F E Q
2.
ON SLOPES BETWEEN 2H:1V AND 1.51-1:1V RIP RAP MAY BE
BEDDED IN 6" OF #57 STONE. CONSULT ENGINEER PRIOR
C A R �
INSTALLATION.
QOFESS %O;��Ji�
3.
THICKNESS OF RIP RAP (T) SHOULD BE NO LESS THAN 1.5
X D50 (APPROXIMATELY 21" FOR CLASS II).
�'9•
•�
4.
DEPTH OF THE TOE SHOULD BE APPROXIMATELY 1.5 X THICKNESS (APPROXIMATELY 30 FOR CLASS II).
SEAL
5.
RIP RAP SLOPE PROTECTION � IS MODIFIED FROM VDH &T AND
NCDENR LAND QUALITY SECTION EROSION AND
43096
SEDIMENT CONTROL DESIGN MANUAL.
�,,°°77(��Gjj
,
6.
BOULDERS 3 -4 FEET IN DIAMETER IN LOWER 1/2 AND 1 -2
FEET DIAMETER IN UPPER 1/2
111 I B 1 111
r`•••,, Dewberry ® DATE TITLE SHEEP NO
's•*• +' 01/12/2014 GREEN MILL STREAM BANK REPAIRS 3
Dewberry Engineers, Inc
2301 REXWOODS DRIVE PROJ No
SUITE 200 BANK STABILIZATION DETAIL
RALEIGH 7
PHONE 9119988188199939 50062103
FAX [phone]
N(:RFI C A F E Q