20140094 Ver 1_401 Application_20140128

January 27, 2014
Ti#y of (6o1bsboro
P.M. Drawer A
Nort4 Carolina
27533-9701
NC DWR, 401 & Buffer Permitting Unit
1650 Mail Service Center
Raleigh, NC 27699-1650
ATTN: Roberto Scheller _
RE: Permit for Emergency Repair of Corps Flood Control Structure
Dear Sir or Madam,
Please find enclosed a permit fee check for $240, five (5) sets of Pre -Construction Notification
applications, and five (5) sets of construction drawings for an emergency repair of the Corps Flood
Control Structure. This repair needs to be done as quickly as possible because a failure of this structure
could cause the City of Goldsboro to lose its water supply for its citizens and Seymour Johnson Air Force
Base.
Today Roberto Scheller and I visited the project site so that he could become familiar with the project
before he begins the permit review process.
Please let me know if you have any questions or need more information.
Thank you.
Sincerely,
QL, o.L,-.
Karen Brashear
Public Utilities Director
[phone] (office)
[phone](cell)
Encl.
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January 22, 2014
(MY of (Salbsbara
I..J.0. Drawer A
Norill (gurolinit
27533-9781
Emily Greer
Program Specialist
U.S. Army Corp of Engineers
Wilmington District- Washington Field Office
2407 West 51h Street
Washington, NC 27889
201 4009 4
TT J]
------------
RE: 401 Water Quality Certification Permit Application for Emergency Repair• -�
to Corps of Engineers Flood Control Structure Weir on Neuse River Cut -Off Near Goldsboro
Dear Ms. Greer:
The City of Goldsboro has worked with together with the U.S. Army Corps of Engineers in 2007 to perform
repairs to the Corps flood control structure weir. This structure has deteriorated and could fail at any time
which could cause water from the main channel of the Neuse River to "short circuit" through the cut-off canal
and leave the City of Goldsboro and Seymour Johnson Air Force Base without a drinking water supply.
Therefore, we ask that you expedite this permit so that emergency repairs of the Corps flood control structure
can begin.
In addition to the permit application is the Section 408 analysis. On the permit application the information
fields for item 3d. and 5b. would not wrap the text so these fields are included in this letter:
3d. The project is to repair the flood control structure as soon as possible due to the potential for
failure which could cause short-circuiting of the water from the main channel of the Neuse and interrupt the
source water supply for the City of Goldsboro and Seymour Johnson Air Force Base.
5b. The City of Goldsboro completed a weir repair in 2007. Prior to that repair action, the City
received approval from the Corps. For this action the Corps of Engineers has completed Section 408 analysis
and we have received a letter of approval to proceed with the work, contingent on receipt of the appropriate
404 permit.
Thank you so much for processing this permit so that we can begin on these emergency repairs. Do not
hesitate to call me if you need any further information.
Sincerely,
T) CL�
Karen Brashear, Public Utilities Director
[phone]
Enc.
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JAN 2 a 2014

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Gid p Office Use Only
MO.
Corps action ID no.
c' ` DWQ project no.
Form Version 14 January 2009
Pre -Construction Notification (PCN) Foran
A. Applicant information
1. Processing
la Type(s) of approval sought from the Corps: ❑X Section 404 Permit ❑ Section 10 Permit I
I b Specify Nationwide Permit (NWP) number: 3 or General Permit (GP) number:
1 c Has the NWP or GP number been verified by the Corps? I ❑ Yes © No
1 d Type(s) of approval sought from the DWQ (check all that apply):
❑X 401 Water Quality Certification — Regular ❑ Non -404 Jurisdictional General Permit
I
j ❑ 401 Water Quality Certification — Express
❑ Riparian Buffer Authorization ,
! to
Is this notification solely for the record
because written approval is not required?
For the record only for DWQ
401 Certification:
❑ Yes ® No
For the record only for Corps Permit:
❑ Yes ❑X No
if
Is payment into a mitigation bank or in -lieu fee program proposed for
mitigation of impacts? If so, attach the acceptance letter from mitigation bank
or in -lieu fee program.
❑ Yes ❑X No
1 g
Is the project located in any of NC's twenty coastal counties. If yes, answer 1 h
below.
❑Yes ❑X No
1 h. Is the project located within a NC DCM Area of Environmental Concern (AEC)?
❑ Yes © No
2.
Project Information
2a
Name of project: Neuse River Cut-off Flood Control Sheet Pile Weir Repair Project
2b
County: Wayne
2c
Nearest municipality / town: Goldsboro, NC
2d
Subdivision name:
2e
NCDOT only, T.I.P. or state project no:
3.
Owner information
3a
Name(s) on Recorded Deed.
US Army Corps of Engineers- House Document No. 327, 77th Congress, 1 Session
3b
Beed Book and Page No.
Deed Book 306, Page 167, Tract No. 1 E
3c. Responsible Party (for LLC if
applicable):
i
3d
Street address*
3e
City, state, zip
3f
Telephone no.:
3g
Fax no.:
3h
Email address:
Page 1 of 10
PCN Form —Version 1 4 January 2009

4. Applicant Information (if different from owner) ,
4a. Applicant is: ❑ Agent QX Other, specify: Municipality
4b Name:
Scott A. Stevens, City Manager
4c Business name
(if applicable):
City of Goldsboro
;
4d. Street address:
200 N. Center Street, P.O. Drawer A
4e. City, state, zip:
Goldsboro, NC 27533 1
i 4f Telephone no..
919-580-4330
4g. Fax no.
919-580-4344
4h Email address
sstevens@goldsboronc gov
, 5. Agent/Consultant Information (if applicable)
5a. Name:
Karen Brashear, Public Utilities Director
5b
Business name
(if applicable).
City of Goldsboro
5c
Street address:
200 N. Center Street, P.O. Drawer A
5d
City, state, zip:
Goldsboro, NC 27533
5e
Telephone no.:
919-735-3329, ext. 101 i
5f
Fax no:
919-735-8907
59
Email address:
[e-mail]
Page 2 of 10

�B-:�Project�Inform�atlonnd Prior Project History
I. Property Identification
1 a Property identification no. (tax PIN or parcel ID):
1 b. Site coordinates (in decimal degrees). Latitude: -78.039 Longitude 35.353
1c Property size:
acres
12. Surface Waters
2a. Name of nearest body of water to proposed project: Neuse River
2b Water Quality Classification of nearest receiving water. Nutrient Sensitive
. 2c. River basin. Neuse River
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:
The US Army Corps of Engineers built a 6,400 foot cutoff channel In 1941 that was 19 fnnt n"n n-4 7n f—i ....a ..___
constructea a tl000 control structure weir. This structure has fallen into disrepair and the cutoff channel has widened over time to widths ranging from ;
i 75' to 200'
1 3b List the total estimated acreage of all existing wetlands on the property:
3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property- 6,400
3d Explain the purpose of the proposed project: i
The project is to repair the flood control structure as soon as possible due to the potential for failure. A failure could cause short-circuiting of water from{
3e Describe the overall project in detail, including the type of equipment to be used:
A sheet pile weir wall will be placed next to the existing deteriorating weir The existing riprap onsite will be placed to protect the flood control structure
4. Jurisdictional Determinatlons
4a Have jurisdictional wetland or stream determinations by the ❑ Yes ❑X No ❑ Unknown
Corps or State been requested or obtained for this property / Comments:
project(including all priorphases) In thepast?
4b. If the Corps made the jurisdictional determination, what type
of determination was made? ❑ Preliminary ❑ Final
4c. If yes, who delineated the jurisdictional areas? Agency/Consultant Company.
Name (if known): Other:
14d 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 ❑x Yes ❑ No ❑ Unknown
this project (including all prior phases) in the past?
5b. If yes, explain in detail according to "help file" instructions.
The City of Goldsboro completed a weir repair in 2007 Prior to the repair action, the City received approval from the Corps for this action from the Co
6. Future Project Plans
6a Is this a phased project? ❑ Yes Q No
6b If yes, explain
Page 3 of 10
PCN Form — Version 1.4 January 2009

C. Proposed Impacts Inventory
I. impacts Summary
1 a. Which sections were completed below for your project (check all that apply):
❑ Wetlands ❑X Streams — tributaries ❑ Buffers ❑ Open Waters ❑ Pond Construction
2. Wetland Impacts
;r inere are weuana
impacts proposed on the
site, then complete this question for
each wetland area impacted.
Ila
2b.
2c.
2d. 2e. 2f
Wetland impact
Type of impact
Type of wetland
Forested Type of jurisdiction I Area of
number
Permanent (P) or
Corps (404,10) or j impact
�Tem ora T
DWQ (401, other) (acres)
W1
Choose one
Choose one
Yes/No
-
W2
Choose one
Choose one
Yes/No
Choose one
I W3
Choose one
Choose one
Yes/No
W4
Choose one
Choose one
Yes/No
S5
W5 -
Choose one
Choose one
Yes/No
Choose one
M -
Choose one
Choose one
Yes/No
29. Total Wetland Impacts:
2h Comments:
1 Comments:
3h. Total stream and tributary Impacts I
Page 4 of 10
PCN Form — Version 1.4 January 2009
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 —�
3b.
3c.
3d. 3e. 3f. 3g
Stream impact
Type of impact
Stream name
Perennial (PER) or Type of Average Impact i
number
intermittent (INT)? jurisdiction { stream i length {
Permanent (P) or
R width (linear
Temporary (f)
(feet) I feet) {
I S1 T
Type In (Other)
Neuse
PER Corps 138 20
S2
Choose one
' S3
Choose one
S4
Choose one
S5
Choose one
—�
i
S6
Choose one
i~
1 Comments:
3h. Total stream and tributary Impacts I
Page 4 of 10
PCN Form — Version 1.4 January 2009

4 Open Water Impacts
i If there are proposed impacts to lakes, ponds, estuaries, tributaries, sounds, the Atlantic Ocean, or any other open water of
the U.S. then individually licf nu
4a.
Open water
415
Name of walerbody
-- - --
- 4c.
4d. 4e
impact number
Permanent (P) or
(if applicable)
Type of impact
Waterbody Area of impact (acres)
, p
i Temporary
type ;
I
O1
Choose one
Choose
O2
IO3
Choose one
Choose
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.
i
5a.
5b. 5c.
5d.
5e.
Pond ID number
Proposed use or
Wetland Impacts (acres)
Stream Impacts (feet)
Upland i
purpose of pond
(acres) ;
Flooded Filled Excavated
Flooded Filled Excavated
P1
-
Choose one
i
P2
Choose one
5f. Total:
5g Comments.
i
5h. Is a dam high hazard per required?
❑ Yes © No
If yes, permit ID no:
I ni txpectea pons surrace area (acres):
51 Size of pond watershed (acres):
5k Method of construction:
6. Buffer Impacts (for DWQ)
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?
6b. 6c.
Buffer Impact Reason for impact
number —
Permanent (P) or
Temporary T
81 NA
B2
~ B3
64
B5
B6
61 Comments.
❑ Neuse ❑ Tar -Pamlico ❑ Catawba ❑ Randleman ❑ Other:
6d. 6e. i 6f. 6g.
Stream name Buffer j Zone 1 Zone 2
mitigation i impact impact
required? ; (square (square
Neuse i No
Yes/No
Yes/No
Yes/No
YeslNo
Yes/No
6h Total Buffer Impacts:
Page 5 of 10

D. Impact Justification and Mitigation
1 a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project
There should not be any Impacts to buffer areas since the repair work is contained with the nprap protected channel.
I
1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques
The construction will take place during low now conditions when river levels are lower than the top of the existing weir structure elevation The
I construction work will occur on the downstream side of the existing weir structure which hopefully will eliminate the need of a coffer dam.
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
I
2c. If yes, which mitigation option will be used for this I
project?
❑Mitigation bank
El to in -lieu fee program
ram
❑ 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:
l
i
'
4. Complete if Making a Payment to In -lieu Fee Program
14a. 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
i 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.
s
Page 6 of 10
PCN Form — Version 1.4 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 QX No I
buffer mitigation?
6b If yes, then identify the square feet of impact to each zone of the riparian buffer that requires mitigation. Calculate the
1 amount of mitigation required
Zone
6c
Reason for impact
6d
Total impact
(square feel)
Multiplier
6e
Required mitigation
(square feet)
l Zone 1
3 (2 for Catawba)
i 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 Pian (required by DWQ)
1. Diffuse Flow Plan
1 a. Does the project include or is it adjacent to protected riparian buffers identified
within
❑ Yes
one of the NC Riparian Buffer Protection Rules?
❑X No
lb If yes, then is a diffuse flow plan included? If no, explain why.
E] Yes ❑ No
I
2. Stormwater Management Plan
2a What is the overall percent imperviousness of this project?
oda
i 2b. Does this project require a Stormwater Management Plan?
❑ Yes19 No
2c If this project DOES NOT require a Stormwater Management Plan, explain why.
i
2d If this project DOES require a Stormwater Management Plan, then provide a brief, narrative description of the plan.
I
I
j
I
2e Who will be responsible for the review of the Stormwater Management Plan?
! 3. Certified Local Government Stormwater Review
j 3a In which local government's jurisdiction is this projects
Wayne County
❑ Phase II
3b Which of the followinglocal ly-implemented stormwater management programs
❑ NSW
apply (check all that apply):
USMP
�
Water Supply Watershed
❑ Other
3c. Has the approved Stormwater Management Plan with 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
j
I (check all that apply):
❑Session Law 2006-246
i
Mother:
+ 4b. Has the approved Stormwater Management Plan with proof of approval been
❑ Yes ❑ No
attached?
5. DWQ 401 Unit Stormwater Review j
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
I 1. Environmental Documentation (DWQ Requirement)
i
1 a Does the project Involve an expenditure of public (federal/state/local) funds or the I Yes E] No
use of public (federal/state) land?
1 b. If you answered "yes" to the above, does the project require preparation of an I
environmental document pursuant to the requirements of the National or State ❑ Yes OX No
(North Carolina) Environmental Policy Act (NEPA/SEPA)? i
1c 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.) A Record of Environmental Consideration was completed on 3 Jan 2014 by the
E] Yes QX No
Comments: WPlmington District REC's do not require review by the Clearinghouse
r--
2. Violations (DWQ Requirement)
�--r-
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, i
❑ Yes & No
or Riparian Buffer Rules (15A NCAC 2B .0200)?
2b. Is this an after -the -fact permit application?
❑ Yes O No
2c. If you answered "yes" to one or both of the above questions, provide an explanation of the violation(s):
I
3. Cumulative Impacts (DWQ Requirement)
3a. Will this project (based on past and reasonably anticipated future Impacts) result in
additional development, which could impact nearby downstream water quality?
X
El Yes No
.. v. n wv _-- Y- v .1— cwV ..441111' o M --l— — 4-1 H"G bullluict vw III IFOW 01101YO14 III tsuuuP Val1UC WIl1I UPC
' most recent DWQ policy. If you answered "no," provide a short narrative description.
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.
Page 9 of 10
PCN Form —Version 1.4 January 2009

i
5. Endangered Species and Designated Critical Habitat (Corps Requirement) i
5a. Will this protect occur in or near an area with federally protected species or
habitat?
❑ Yes ❑X No
5b Have you checked with the USFWS concerning Endangered Species Act
impacts?
❑ Yes Q No
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?
❑ Yes Q 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
Sf:1f115 (P n Nafinn7l N;cfnrir True} iincinnoiinn n erf:e,n ..3 :-❑ Yes IRI No
i North Carolina history and archaeology)?
7b What data sources did you use to determine whether your site would impact historic or archeological resources'
I
i 8. Flood Zone Designation (Corps Requirement)
8a Will this project occur in a FEMA -designated 100 -year floodplain?
Q Yes ❑ No
8b. If yes, explain how project meets FEMA requirements.
j The existing Corps of Engineers flood control structure was designed by the Corps. Repair of this structure will maintain the same elevation as the
original structure.
I
8c What source(s) did you use to make the floodplain determination?
Scott A Stevens, City Manager
Applicant/Agent's Printed Name
Applicant/Agent's Signature
Date
(Agent's signature is valid only if an authodzaf;on
letter from the applicant is provided
Page 10 of 10

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SHEET PILE DAM PROFILE VIEW
SCALE: V=10'
0 10' 20'
2 +00
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2 +16
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PROJECT: 13821007.00
DATE: JULY 2013
DRAWING NO.
02
SHEET
02 OF 04
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CONTRACTOR DESIGNED CONTROL
OF WATER UPSTREAM OF THE
EXISTING SHEET PILE CREST. -L
ADDITIONAL MEASURES DESIGNED BY
THE CONTRACTOR MAY BE NEEDED
DOWNSTREAM OF THE WORK AREA.
/ \
PROPERTY LINE FOR MAR
MAC AGGREGATES LLC
20.00'
/7
i
ROD-DRIVE-2
V /
B -1
ROD-DRIVE-1
B -2
ACCESS
DIRECTION V1
SECTION IS SHOWN
SECTION INDICATOR
I1 roxm
PROPERTY LINES ESTIMATED BASED ON DATA PROVIDED BY WAYNE
COUNTY. THE CITY OF GOLDSBORO HAS ARRAINGED FOR ACCESS
THROUGH MAR -MAC AGGREGATES TO PERFORM THE WORK. ACCESS TO
THE LIMITS OF WORK WILL BE DESIGNATED DURING THE
PRECONSTRUCTION MEETING. NO ACCESS WILL BE ALLOWED ON THE
SCOTT JAMES LENDELL PROPERTY. THE CONTRACTOR IS RESPONSIBLE
FOR VERIFICATION OF PROPERTY LIMITS PRIOR: TO THE START OF WORK.
PROPERTY LINE FOR
SCOTT JAMES LENDELL
20.00' _
EXISTING SHEET PILE WEIR
E &S DAM PLAN VIEW
SCALE: 1"=60'
0 60' 120'
SECTION NUMBER*
DRAWING NUMBER ON
WHICH SECTION APPEARS
PLAN, SECTION OR PLAN, SECTION OR DETAIL TITLE
DETAIL NUMBER
PLAN / SECTION / DETAIL
ADDITIONAL INFORMATION
OPTIONAL ADDITIONAL INFORMATION
NOTES
:0 IFA
.110 WAI
DETAIL NUMBER
4 4
A -110
DRAWING NUMBER ON
WHICH DETAIL APPEARS
DETAIL INDICATOR
VERBAL SCALE **
SCALE: 1- 1/2 " =1'0
0
-�-- -- 1.50"
SCALE INDICATOR
* SECTION AND ELEVATION INDICATORS ARE SIMILAR. SECTION AND ELEVATION NUMBERS ARE
COMBINED AND SEQUENTIAL ON EACH DRAWING.
** VERBAL SCALE IS SHOWN FOR CONVENIENCE. ALL DRAWINGS SHOULD BE CHECKED TO INSURE
THAT THE SCALE BAR ITSELF IS SHOWN AT ACTUAL SIZE. DRAWINGS NOT PLOTTED AT THEIR
INTENDED SIZE (ANSI D 22" x 34 ") WILL NOT SCALE PROPERLY.
COARSE DRAINFILL / GRAVEL
1. THE CONTRACTOR IS RESPONSIBLE FOR PROVIDING A CONTROL OF WATER PLAN THAT ALLOWS
ACCESS TO THE CONSTRUCTION AREA AND PROVIDES MEASURES FOR ENSURING EMPLOYEE
SAFETY.
2. THE CONTRACTOR SHALL COORDINATE SITE ACCESS THROUGH THE MAR -MAC AGGREGATE FACILITY.
3. AN EROSION AND SEDIMENT CONTROL PERMIT IS NOT REQUIRED FOR THIS CONSTRUCTION
HOWEVER EROSION AND SEDIMENT CONTROL MEASURES AS SHOWN ON THIS DRAWING SHALL BE
INSTALLED AND MONITORED BY THE CONTRACTOR.
4. THE CONTRACTOR IS RESPONSIBLE FOR RE- ESTABLISHING VEGETATIVE COVER AFTER
CONSTRUCTION. THE SPECIFICATIONS FOR SEEDING CAN BE FOUND IN SECTION 32 92 19 OF THE
PROJECT TECHNICAL SPECIFICATIONS.
n SEDIMENT FENCE
STEEL POST
24" MAX.
FABRIC HEIGHT
MATERIALS:
WIRE MESH FENCE
FABRIC FASTENED TO UPSLOPE
SIDE OF POSTS
BACKFILL TRENCH WITH GRAVEL
24" MIN.
12" OF FABRIC INSTALLED BURIED
4" MIN.
SEDIMENT FENCE
1. USE A SYNTHETIC FILTER FABRIC OF AT LEAST 95% BY WEIGHT OF POLYOLEFINS OR POLYESTER, WHICH IS CERTIFIED BY THE MANUFACTURER OR SUPPLIER AS CONFORMING TO
THE REQUIREMENTS IN ASTM D 6461, WHICH IS SHOWN IN PART BELOW. SYNTHETIC FILTER FABRIC SHOULD CONTAIN ULTRAVIOLET RAY INHIBITORS AND STABILIZERS TO PROVIDE
A MINIMUM OF 6 MONTHS OF EXPECTED USABLE CONSTRUCTION LIFE AT A TEMPERATURE RANGE OF 0 TO 120 °F.
TEMPORARY SILT FENCE MATERIAL PROPERTY REQUIREMENTS
ENSURE THAT THE HEIGHT OF THE SEDIMENT FENCE DOES NOT EXCEED 24 INCHES
TEST MATERIAL UNITS SUPPORTED, SILT
UNSUPPORTED, SILT TYPE OF VALUE
FENCE
FENCE
OF
GRAB STRENGTH ASTM D 4632 N (LBS)
NECESSARY, SECURELY FASTEN THE
FOR THE NEXT RAIN AND
MACHINE DIRECTION 400
550
MARV
(90)
(90)
TO
X- MACHINE DIRECTION 400
450
MARV
(90)
(90)
OR PLASTIC ZIP TIES SHALL HAVE A
PERMITTIVITY2 ASTM D 4491 SEC -1 0.05
0.05
MARV
APPARENT OPENING SIZE Z ASTM D 4751 MM 0.60
0.60
MAX. ARV3
(US SIEVE #) (30)
(30)
FOR SUPPORTED SEDIMENT FENCE. SUPPORT POSTS
% 70% AFTER
70% AFTER
THE GROUND TO A MINIMUM OF 24 INCHES.
ULTRAVIOLET STABILITY ASTM D 4355 RETAINED 500 HOURS OF
500 HOURS OF
TYPICAL
STRENGTH EXPOSURE
EXPOSURE
PROPOSED LINE OF POSTS AND UPSLOPE FROM THE
1 SILT FENCE SUPPORT SHALL CONSIST OF 14 GAUGE STEEL WIRE WITH A MESH SPACING OF 150 MM (6 INCHES), OR PREFABRICATED POLYMER MESH
6.
OF EQUIVALENT STRENGTH.
ON
2 THESE DEFAULT VALUES ARE BASED ON EMPIRICAL EVIDENCE WITH A VARIETY OF SEDIMENT. FOR ENVIRONMENTALLY SENSITIVE AREAS, A REVIEW OF
7.
PREVIOUS EXPERIENCE AND /OR SITE OR REGIONALLY SPECIFIC GEOTEXTILE TESTS IN ACCORDANCE WITH ASTM D 5141 SHOULD BE PERFORMED TO
CONFIRM SUITABILITY OF THESE REQUIREMENTS.
8.
3 AS MEASURED IN ACCORDANCE WITH ASTM D 4632.
2. POSTS FOR SEDIMENT FENCES SHALL BE 1.33 LB /LINEAR FT STEEL WITH A MINIMUM LENGTH OF 5 FT. POSTS SHALL HAVE PROJECTIONS TO FACILITATE FASTENING THE FABRIC.
3. FOR REINFORCEMENT OF STANDARD STRENGTH FILTER FABRIC, USE WIRE FENCE WITH A MINIMUM 14 GAUGE AND A MAXIMUM MESH SPACING OF 6 INCHES.
rnNr,TR I IrTT(1N NnTFC -
1.
ENSURE THAT THE HEIGHT OF THE SEDIMENT FENCE DOES NOT EXCEED 24 INCHES
ABOVE THE GROUND SURFACE.
2.
2.
CONSTRUCT THE FILTER FABRIC FROM A CONTINUOUS ROLL CUT TO THE LENGTH
OF
THE BARRIER TO AVOID JOINTS. WHEN JOINTS ARE
NECESSARY, SECURELY FASTEN THE
FOR THE NEXT RAIN AND
FILTER FABRIC ONLY AT A SUPPORT POST WITH 4 FEET MINIMUM OVERLAP TO THE
NEXT POST.
UNDERMINING THE FENCE DURING CLEANOUT.
3.
SUPPORT STANDARD STRENGTH FILTER FABRIC BY WIRE MESH FASTENED SECURELY
TO
THE UPSLOPE SIDE OF THE POSTS USING TIE WIRES.
EXTEND THE WIRE MESH SUPPORT
STABILIZE IT AFTER THE CONTRIBUTING DRAINAGE AREA HAS BEEN
TO THE BOTTOM OF THE TRENCH. FASTEN THE WIRE REINFORCEMENT, THEN FABRIC
ON THE UPSLOPE SIDE OF THE FENCE POST. WIRE
OR PLASTIC ZIP TIES SHALL HAVE A
MINIMUM 50 —POUND TENSILE STRENGTH.
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4.
SPACE POSTS A MAXIMUM OF 6 FT FOR UNSUPPORTED SEDIMENT FENCE AND 8
FT
FOR SUPPORTED SEDIMENT FENCE. SUPPORT POSTS
SHOULD BE DRIVEN SECURELY INTO
7 U
THE GROUND TO A MINIMUM OF 24 INCHES.
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5.
EXCAVATE A TRENCH APPROXIMATELY 4 INCHES WIDE AND 8 INCHES DEEP ALONG THE
PROPOSED LINE OF POSTS AND UPSLOPE FROM THE
BARRIER.
6.
PLACE 12 INCHES OF THE FABRIC ALONG THE BOTTOM AND SIDE OF THE TRENCH.
ON
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7.
BACKFILL THE TRENCH WITH SOIL PLACED OVER THE FILTER FABRIC AND COMPACT.
8.
DO NOT ATTACH FILTER FABRIC TO EXISTING TREES.
MAINTENANCE NOTES:
1.
INSPECT SEDIMENT FENCES AT LEAST ONCE A WEEK AND AFTER EACH SIGNIFICANT RAINFALL EVENT (1/2 INCH
OR GREATER). MAKE ANY REQUIRED REPAIRS IMMEDIATELY.
2.
SHOULD THE FABRIC OF A SEDIMENT FENCE COLLAPSE, TEAR, DECOMPOSE OR BECOME
INEFFECTIVE, REPLACE
IT PROMPTLY.
3.
REMOVE SEDIMENT DEPOSITS AS NECESSARY TO PROVIDE ADEQUATE STORAGE VOLUME
FOR THE NEXT RAIN AND
TO REDUCE PRESSURE ON THE FENCE. TAKE CARE TO AVOID
0
UNDERMINING THE FENCE DURING CLEANOUT.
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4.
REMOVE ALL FENCING MATERIALS AND UNSTABLE SEDIMENT DEPOSITS AND BRING THE
AREA TO GRADE AND
STABILIZE IT AFTER THE CONTRIBUTING DRAINAGE AREA HAS BEEN
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PROPERLY STABILIZED WITH SEED AND MULCH.
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NEUSE RIVER FLOOD TABLE
PROJECT: 13821007.00
WATER SURFACE
FLOW RATE
FLOODING EVENT
ELEVATION
(CFS)
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PLATE TO SHEET PILE.
2 -YEAR FLOOD
63.0
9,700
5 -YEAR FLOOD
66.0
14,700
10 -YEAR FLOOD
68.4
18,700
0 +00
80
70
50
40
20
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EXIS
TEMPORARY COFFER DAM
BE DESIGNED BY CONTRACT!
SHEET PILE DAM PLAN VIEW
SCALE: V=30'
0 30' 60'
1 +00
IG 2286553.94, 584971.78
ING AND GRUBBING 0.13 ACRES
kS NECESSARY FOR SHEET PILE
LATION
UBBING 0.12 ACRES ONLY AS
ITE ACCESS AND SHEET PILE
REMOVE THE CORRUGATED HDPE u,
PIPE FROM THE OLD SHEET PILE WEIR. o
CUT THE OLD SHEET PILE SECTION TO EL 53.0.
— G/�IJ 1 IIV V JI-iGG 1 rILC
EXISTING GRADE
EL 53.0
EXISTING RIPRAP
REMOVE RIPRAP TO EL 53.
INSTALL RIPRAP TO EL 53.
6" BEDDING ( NCDOT #57 STONE)
NON -WOVEN GEOTEXTILE
5
�- -- 5.00' 4
PIC EL 56.0
AZ 26 SHEET PILE, A572 -GR50 STEEL
14.00' (MIN)
EL 51.0 ,
4.00' MIN r
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— 10.00 (MIN) - -�
EL 29.0
PROPOSED REPAIR SECTION
SCALE: 1"=5'
0 5' 10'
INSTALL LARGEST RIPRAP AVAILABLE ON
SITE AND CHINK IN SMALLER STONE OF
APPROXIMATELY NCDOT CLASS B SIZE.
EXISTING RIPRAP
NON -WOVEN GEOTEXTILE TO BE
INSTALLED BENEATH BEDDING STONE
9" BEDDING ( NCDOT #57 STONE)
REMOVE EXISTING RIPRAP AS NEEDED DURING SHEET
PILE INSTALLATION. ONCE INSTALLATION OF THE SHEET
PILES IS COMPLETE, INSTALL THE GEOTEXTILE, BEDDING
STONE, AND RIPRAP AS SHOWN IN THIS DETAIL.
REPLACE RIPRAP DOWNSTREAM
OF THE SHEET PILE WEIR
5
EXISTING RIPRAP — 3.00' 4 / EXISTING RIPRAP
EXISTING SHEET PILE
20'
_ NON -WOVEN GEOTEXTILE TO BE
INSTALLED BENEATH. STONE
9" BEDDING ( NCDOT #57 STONE)
REMOVE EXISTING RIPRAP AS NEEDED DURING SHEET
PILE INSTALLATION. ONCE INSTALLATION OF THE SHEET
PILES IS COMPLETE, INSTALL THE GEOTEXTILE, BEDDING
STONE, AND RIPRAP AS SHOWN IN THIS DETAIL.
AZ 26 SHEET PILE, A572 -GR50 STEEL
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SCALE: 1 " =5'
Mill
0 5' 10'
2 +16p
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7.50' - 42.00' - - -- - - - - - -- - - - - -- 1000.50' - -- - 42.00' -' 7.50'
REPLACE RIPRAP DOWNSTREAM
OF THE SHEET PILE WEIR E;L 51
3 _
PROPOSED SHEET PILE WEIR EL 56.0 3.00' 1
4.00'
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PROJECT: 13821007.00
USE SPACER PLATES AS
- -.
DRAWING NO.
NECESSARY TO WELD COVER
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SCALE: 3" =1'Q"
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NOTES
1. THE RIPRAP FOR THE PROJECT SHALL BE RE -USED FROM THE SITE. THE CONTRACTOR IS
RESPONSIBLE FOR OBTAINING THE ENGINEERS APPROVAL ON THE SIZE AND LOCATION OF RIPRAP
PLACEMENT PRIOR TO PLACING THE RIPRAP. THE DESIGN INTENT IS TO PROVIDE LARGER RIPRAP
JUST DOWNSTREAM OF THE WEIR.
1 +00
4 PROPOSED REPAIR PROFILE
SCALE- 1 " =10'
0 1!:0' 20'
1 +50
2 +00
3 /s' COVER PLATE BEND AS
NECESSARY TO ACHIEVE
THE DIMENSIONS SHOWN.
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