HomeMy WebLinkAbout20170026 Ver 1_401 Application_20170117AECOMAECOM Technical Services of North Caroliina, Inc. 919 461 1100 tel
1600 Perimeter Park Drive 919 461 1415 fax
Suite 400
Morrisville, NC 27560
www.aecom*com
December 23, 2016 L5 @ 0
Ms. Karen Higgins .IAlyD
0 3 2017 !
Wetlands and Buffer Permitting Unit
NC Division of Water Resources 40E& -B AT17 RES 0
1617 Mail Service Center UFF R p E5
Raleigh, NC 27699-1617
Subject: City of Raleigh Public Utilities Department
Stadium Drive Sanitary Sewer Replacement
Dear Ms. Higgins.-
Enclosed
iggins:Enclosed are five copies of a Pre -Construction Notification (PCN) Permit Application Package for the
City of Raleigh Stadium Drive Sanitary Sewer Replacement project including: Attachment A (project
description), Exhibits (proposed work plan and details), and Attachments 1-3 (reference materials by
others). Also enclosed is the $240.00 application fee.
The project will entail replacement of approximately 40 linear feet of PVC pipe, which is damaged
beneath the streambed, with ductile iron pipe. Copies of this application have been submitted to the
Army Corps of Engineers for coverage under the corresponding Natiowide Permit 12. Additionally,
this work is being coordinated with the North Carolina Division of Mitigation Services and the North
Carolina Department of Transportation.
Please contact me with any questions regarding this permit application.
Sincerely,
AECOM Technical Services of North Carolina, Inc.
7,�5, 'ell
Mary T. Brice, P.E. LEED AP
Senior Environmental Engineer
Attachments
O�O� W A TF 9OG
Office Use Only:
2 0 1 7 0 0 2 6 Corps action ID no.
DWQ project no.
Form Version 1.4 January 2009
Page 1 of 10
PCN Form — Version 1.4 January 2009
Pre -Construction Notification (PCN) Form
A.
Applicant Information
1.
Processing
1 a.
Type(s) of approval sought from the Corps:
❑X Section 4 ermit ❑ Section 10 Permit
1 b.
Specify Nationwide Permit (NWP) number: 12 or General Permit (GP) number:
1c.
Has the NWP or GP number been verified by the Corps?
❑ Yes Efl 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
❑ 401 Water Quality Certification — ExpressX❑ Riparian Buffer Authorization
1 e.
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 ❑X No
1f.
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:
Stadium Drive Sanitary Sewer Repair
2b.
County:
Wake
2c.
Nearest municipality / town:
Raleigh
2d.
2e.
Subdivision name:
NCDOT only, T.I.P. or state project no:
3.
Owner Information lUU1 0 3
3a.
Name(s) on Recorded Deed:
3b.
Deed Book and Page No.
-WATER R E
RES US
01 & BUF
3c.
Responsible Party (for LLC if
applicable):
City of Raleigh Public Utility Department
3d.
Street address:
222 W. Hargett St.
3e.
City, state, zip:
Raleigh, NC, 27601
3f.
Telephone no.:
919-996-4540
3g.
Fax no.:
919-996-1866
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 ❑ 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:
Mary T. Brice
5b.
Business name
(if applicable):
AECOM Technical Services of North Carolina, Inc.
5c.
Street address:
1600 Perimeter Park Dr. Suite 400
5d.
City, state, zip:
Morrisville, NC, 27560
5e.
Telephone no.:
919-461-1358
5f.
Fax no.:
919-461-1415
5g.
Email address:
mary.brice@aecom.com
Page 2 of 10
B.
Project Information and Prior Project History
1.
Property Identification
1a.
Property identification no. (tax PIN or parcel ID):
1b.
Site coordinates (in decimal degrees):
Latitude: 35.98 Longitude: -78.52
1c.
Property size:
acres
2.
Surface Waters
2a.
Name of nearest body of water to proposed project:
Richland Creek
2b.
Water Quality Classification of nearest receiving water:
C, NSW
2c.
River basin:
Neuse River Basin
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:
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:
3d. Explain the purpose of the proposed project:
This project is to facilitate an emergency repair of the City of Raleigh's Public Utilities Departments line adjacent to the south side of the bridge.
3e. Describe the overall project in detail, including the type of equipment to be used:
See Attachment A.
4.
Jurisdictional Determinations
4a.
Have jurisdictional wetland or stream determinations by the
Corps or State been requested or obtained for this property /
ro'ect(including all priorphases) in thepast?
❑ Yes ❑ No ❑X 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 areas?
Name (if known):
Agency/Consultant Company:
Other:
4d.
If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation.
6.
Project History
5a.
Have permits or certifications been requested or obtained for
this project (including all prior phases) in the past?
❑ Yes ❑x No ❑ Unknown
5b.
If yes, explain in detail according to "help file" instructions.
6.
Future Project Plans
6a.
Is this a phased project?
❑ Yes Z No
6b.
If yes, explain.
Page 3 of 10
PCN Form — Version 1.4 January 2009
C. Proposed Impacts Inventory
1. Impacts Summary
1 a. Which sections were completed below for your project (check all that apply):
❑ Wetlands ❑X 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
-
W4 -
Choose one
Choose one
Yes/No
-
W5 -
Choose one
Choose one
Yes/No
-
W6 -
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 T
Excavation
Richland Creek
PER
Corps
20
115
S2
Choose one
-
S3 -
Choose one
-
S4 -
Choose one
-
-
S5 -
Choose one
-
S6 -
Choose one
-
3h. Total stream and tributary impacts
115
3i. Comments:
Page 4 of 10
PCN 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 indivi 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
Pi
Choose one
P2
Choose one
5f. Total:
5g. Comments:
5h. Is a dam high hazard permit required?
❑ Yes ❑ No If yes, permit ID no:
5i. Expected pond surface area (acres):
5j. 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?
❑ 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
Sewer Replacement
Richland Creek
No
1,930
1,300
B2 -
Yes/No
B3 -
Yes/No
B4 -
Yes/No
B5 -
Yes/No
B6 -
Yes/No
6h. Total Buffer Impacts:
1,930
1,300
6i. Comments:
Page 5 of 10
D. Impact Justification and Mitigation
1. Avoidance and Minimization
1a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project.
Stream disturbance will be the minimum necessary to allow for access to project site. Stream will be restored to its original contours upon completion
of the project.
1b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
Work areas will be confined to the minimum extent necessary to perform the work. Disturbed areas will be perpendicular to the buffer to the extent
possible. Erosion control devices and measures will be installed prior to construction and work will be scheduled during a dry period when streamflow
is low.
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?
❑ YesX❑ 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
project?
❑ Mitigation bank
❑ Payment to in -lieu fee program
❑ 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:
S. 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 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
L] Yes ❑X 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
XQ Yes ❑ No
within one of the NC Riparian Buffer Protection Rules?
1b.
If yes, then is a diffuse flow plan included? If no, explain why.
This
linear project at a stream crossing will not require a diffuse flow plan.
❑ 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?
❑ YesX❑ No
2c.
If this project DOES NOT require a Stormwater Management Plan, explain why:
Project does not result in a point discharge or creation of impervious surface.
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 localgovernment's jurisdiction is thisproject?
❑ Phase II
❑ NSW
3b.
Which of the following locally -implemented stormwater management programs
❑ USMP
apply (check all that apply):
❑ Water Supply Watershed
❑X Other: Not required.
3c.
Has the approved Stormwater Management Plan with proof of approval been
❑ Yes ❑ No
attached?
4.
DWQ Stormwater Program Review
El Coastal counties
❑ HQW
4a.
Which of the following state -implemented stormwater management programs apply
❑ ORW
(check all that apply):
❑Session Law 2006-246
X❑Other: Not required.
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)
1a.
Does the project involve an expenditure of public (federal/state/local) funds or the
❑X Yes ❑ No
use of public (federal/state) land?
1 b.
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
❑ Yes No
(North Carolina) Environmental Policy Act (NEPA/SEPA)?
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
❑ Yes ❑ No
letter.)
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 2B .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 ❑X 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.
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.
Project will generate no wastewater.
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 ❑ No
habitat?
5b. Have you checked with the USFWS concerning Endangered Species Act
❑ Yes ❑X 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?
❑ 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:
The project is in FEMA zone AE. No new structures will be placed in the floodplain.
8c. What source(s) did you use to make the floodplain determination?
FEMA Flood Map # 3720184100J (Dated 05/02/06)
Ruffin L. Hall
City Manager
City of Raleigh
Ai
Post Office Box 590
Raleigh, North Carolina 27602 plicant/Age is Signature
Date
(Age9F. signature is valid only if an authorization
letter from the applicant is rovided.
Page 10 of 10
Attachment A
r- y� � -� .� aF•
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Stadium Drive Sanitary Sewer Replacement, Wake Forest
Lat. 35.984679, Long. -78.519744
An 8 -inch PVC sanitary sewer is damaged where it crosses Richland Creek on the south side of the Stadium Drive bridge. The
stream bed width is approximately 20 feet. A closed circuit television inspection of the pipe shows that it is deflected in the
centerline of the stream. City of Raleigh Sewer Maintenance staff has noted sewer back-ups upstream of the deflected pipe
and there is concern that a sanitary sewer overflow will result.
Approximately 40 linear feet of PVC pipe at the stream crossing will be replaced with restrained -joint ductile iron pipe. In
order to perform the work one tree, which is in close proximity to an existing manhole, will be removed. Erosion control
measures will be installed prior to the work and work will be performed in the dry. Streambed material will be harvested
prior to pipe replacement and will be replaced in the bed after pipe replacement is complete. It is expected that a tire or
track -mounted back -hoe and excavator will be used to replace the pipe, reconstruct the streambank and stabilize the
streambank.
The work area is within a recent stream restoration performed by the North Carolina Division of Mitigation Services. That
office has provided as -built drawings and planting schemes from the original project (Attachments 1, 2, and 3). Once the
sewer replacement is complete the stream bed, banks, and buffer areas will be restored to original contours and plantings
per the as -built drawings.
In order to minimize disturbance to the stream, streambanks, and buffers, all work will be confined to the underside and
south side of the bridge. The dewatering plan includes installing an upstream pool under the bridge. The pump will be
lowered onto the streambank from the bridge so that no vehicular access is necessary on the north side of the bridge. This
work is being coordinated with the NC DOT.
7v
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j
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r. Wr
44
An 8 -inch PVC sanitary sewer is damaged where it crosses Richland Creek on the south side of the Stadium Drive bridge. The
stream bed width is approximately 20 feet. A closed circuit television inspection of the pipe shows that it is deflected in the
centerline of the stream. City of Raleigh Sewer Maintenance staff has noted sewer back-ups upstream of the deflected pipe
and there is concern that a sanitary sewer overflow will result.
Approximately 40 linear feet of PVC pipe at the stream crossing will be replaced with restrained -joint ductile iron pipe. In
order to perform the work one tree, which is in close proximity to an existing manhole, will be removed. Erosion control
measures will be installed prior to the work and work will be performed in the dry. Streambed material will be harvested
prior to pipe replacement and will be replaced in the bed after pipe replacement is complete. It is expected that a tire or
track -mounted back -hoe and excavator will be used to replace the pipe, reconstruct the streambank and stabilize the
streambank.
The work area is within a recent stream restoration performed by the North Carolina Division of Mitigation Services. That
office has provided as -built drawings and planting schemes from the original project (Attachments 1, 2, and 3). Once the
sewer replacement is complete the stream bed, banks, and buffer areas will be restored to original contours and plantings
per the as -built drawings.
In order to minimize disturbance to the stream, streambanks, and buffers, all work will be confined to the underside and
south side of the bridge. The dewatering plan includes installing an upstream pool under the bridge. The pump will be
lowered onto the streambank from the bridge so that no vehicular access is necessary on the north side of the bridge. This
work is being coordinated with the NC DOT.
25' 0 50' .
LEGEND
__ A t� Z- 1 ZONE 1 RIPARIAN BUFFER PROPERTY LINE
1" 50' Ny�,����
!F' ~ ` Z- 2 ZONE 2 RIPARIAN BUFFER — — — — — EASEMENT LINE
EXISTING SANITARY SEWER STREAM IMPACTS
r - EXISTING STREAM BUFFER IMPACTS
r
t. .sup
' � � ♦ �•y � � ti ; �/fir- �/
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C
• P
STADIUM DRIVE SANITARY SEWER REPLACEMENT
'This map was developed using GIS base data from Wake County GIS (Naps) and as -built
plans obtained from third parties. AECOM assumes no liability for any errors, omissions or
inaccuracies in the information provided.
AirsNOTE:
: RESTORE CHANNEL CONTOURS AND
y, PLANTING TO CONDITIONS SHOWN IN
• ' RICHLAND CREEK STREAM RESTORATION
RECORD DRAWING, SHEETS 5-C AND 6-C,
PREPARED BY ECOLOGIC ON 7/28/10.
CROSS SECTION FOR PROPOSED WORK IS
AT APPROXIMATELY 0+50 ACCORDING TO
RICHLAND CREEK STREAM RESTORATION
STATIONING, PLEASE REFER TO SHEET 6-B.
Exhibit 1 ��M
�,�� ~�°^^ ••°�_ °'�^°'�' _°^'__'°^= STADIUM DRIVE EROSION CONTROL MEASURES
Exhibit 2
This map was developed using GIS base data from Wake County GIS (iMaps, and as -built
�OM
plans obtained from third parties. AECOM assumes no liability for any errors, omissions or
inaccuracies in the information provided. E `' h I b i
ap tleMopea us
AEM iDab kan �%e Cnunry GI YOMaysl u ul
"'GAEOMassumes abAiryl m STADIUM DRIVE TRAFFIC CONTROL PLAN
Exhibit 4
PROVIDE HIGH STRENGTH
DOUBLE STITCHED J
TYPE SEAMS
WN IN SPOUT
HIGH STRENGTH STRAPPING
FOR HOLDING HOSE IN PLACE
HEAVY DUTY
DIRTBAG 55��#- WATER FLOW
OR EQUAL FROM PUMP
ACCEPTED DEWATERING DEVICE (SILT BAG) PROVIDE
POSITIVE DRAINAGE FROM SILT BAG TO STREAM
OPENING TO ACCOMMODATE
UP TO 4' DISCHARGE HOSE :o -w
SEDIMENT DIKE
AGGREGATE UNOERLAYMENT �-
(3- THICK NCDOT NO. 57 STONE)
DEWATERING BAG NOTES:
1. THE DEWATERING BAG SHALL BE MADE OF
NON -WOVEN GEOTEXTILE WITH A MIN. SURFACE
AREA OF 225 SQUARE FEET.
2. ALL STRUCTURAL SEAMS SHALL BE SEWN WITH A
DOUBLE STITCH USING A DOUBLE NEEDLE MACHINE
WITH HIGH STRENGTH THREAD.
3. THE SEAM STRENGTH SHALL WITHSTAND 100 LB/IN
USING ASTM D-4884 TEST METHOD.
4. THE GEOTEXTILE FABRIC SHALL BE A 10 OZ
NON -WOVEN FABRIC.
5. DISCHARGE FROM THE DEWATERING BAG SHALL BE
DIRECTED SUCH THAT PRE -DISTURBANCE
HYDROLOGY IS NOT CHANGED.
DEWATERING BAG
HOSES DIVERSION PUMPS
EWATERING P INTAKE HOSE
D
PUMP
INTAKE HOSE FLOW
CLEAN WATER
WORK AREA
LENGTH NOT TO EXCEED
THAT WHICH CAN BE
COMPLETED IN ONE DAY
PLAN VIEW
SUMP -HOLE OR POOL
(12'70 18" DEEP, 2' DIA.)
NOTES:
1. SANDBAG DIKES SHALL BE SITUATED AT THE UPSTREAM AND
DOWNSTREAM ENDS OF THE WORK AREA AND STREAM FLOW
SHALL BE PUMPED AROUND THE WORK AREA. THE PUMP
SHOULD DISCHARGE INTO A STABLE VELOCITY DISSIPATER
CONSTRUCTED OF RIP RAP OR SANDBAGS.
2. WATER FROM THE WORK AREA SHALL BE PUMPED TO A
SEDIMENT FILTERING MEASURE SUCH AS A DEWATERING BASIN,
SEDIMENT BAG, OR OTHER ACCEPTED DEVICE. THE MEASURE
SHALL BE LOCATED SUCH THAT THE WATER DRAINS BACK
INTO THE CHANNEL BELOW THE DOWNSTREAM SANDBAG DIKE
WITHOUT CAUSING OUTLET EROSION BETWEEN THE SILT BAG
AND CHANNEL.
3. AT THE END OF EACH WORK DAY, THE DISTURBED CHANNEL
SHALL BE MATTED.
4. WHEN REPLACING CULVERTS, THE CONTRACTOR SHALL PLACE
SAND BAGS ACROSS THE ENTIRE DOWNSTREAM FACE OF EACH
PIPE TO PREVENT BACKFLOW DURING PUMP AROUND
ACTIVITIES.
TEMPORARY PUMP AROUND Exhibit 5
0
N
FLOW
NOTES
1. CONTRACTOR IS RESPONSIBLE FOR
MAINTAINING WORK IN THE DRY.
2. PUMPING MAY BE REQUIRED TO KEEP
WORK AREA DEWATERED.
3. ENCROACHMENT INTO WATERCOURSE
SHOULD BE MINIMIZED.
4. COFFERDAM SHALL BE REMOVED WHEN
WORK IS COMPLETE AND SHALL NOT BE
LEFT UNATTENDED FOR ANY 24 HOUR
PERIOD.
SANDBAG COFFERDAM
A
WORK AREA
LENGTH NOT TO EXCEED
THAT WHICH CAN BE
COMPLETED IN ONE DAY
PLAN VIEW
IMPERVIOS
MEMBRANE
WORK AREA
FLOW
SECTION A -A
CROSS SECTION OF SANDBAG COFFERDAM
Exhibit 6
BASE FLOW + 1 FOOT
(2 FOOT MAX.)
MINIMUM 1
GAUGE LIQ
WIRES
SILT FENCE
8'-0" MAXIMUM
VARIABLE AS DIRECTED BY THE ENGINEER
MINIMUM 12-1/2
GAUGE INTERMEDIATE
WIRES
GRADE
NOTE:
1. USE SILT FENCE ONLY WHEN DRAINAGE
AREA DOES NOT EXCEED 1/4 ACRE AND
NEVER IN AREAS OF CONCENTRATED FLOW.
2. END OF SILT FENCE NEEDS TO BE
TURNED UPHILL.
3. REMOVE SEDIMENT DEEPER THAN 12"
AND REPAIR ANY UNDERMINING IMMEDIATELY.
4. FOR REPAIR OF SILT FENCE FAILURES,
USE NO. 57 WASHED STONE. FOR ANCHOR
WHEN SILT FENCE IS PROTECTING CATCH
BASIN.
5. CONTRACTOR SHALL BE RESPONSIBILE
FOR PLACEMENT AND REMOVAL OF FENCE.
6. CONTRACTOR SHALL BE RESPONSIBLE
FOR RESTORING DISTURBED AREAS TO
PRE -CONSTRUCTION CONDITION.
Exhibit 7
STEEL POST
WOVEN WARE FABRIC
SILT FENCE FABRIC
26"
FILL SLOPE
i
N
,-GRADE
6" MINIMUM COVER
2'-0"
OVER SKIRT •
1,,;.,,
ANCHOR SKIRT AS
DIRECTED
BY ENGINEER •
SIDE
VIEW
MINIMUM 12-1/2
GAUGE INTERMEDIATE
WIRES
GRADE
NOTE:
1. USE SILT FENCE ONLY WHEN DRAINAGE
AREA DOES NOT EXCEED 1/4 ACRE AND
NEVER IN AREAS OF CONCENTRATED FLOW.
2. END OF SILT FENCE NEEDS TO BE
TURNED UPHILL.
3. REMOVE SEDIMENT DEEPER THAN 12"
AND REPAIR ANY UNDERMINING IMMEDIATELY.
4. FOR REPAIR OF SILT FENCE FAILURES,
USE NO. 57 WASHED STONE. FOR ANCHOR
WHEN SILT FENCE IS PROTECTING CATCH
BASIN.
5. CONTRACTOR SHALL BE RESPONSIBILE
FOR PLACEMENT AND REMOVAL OF FENCE.
6. CONTRACTOR SHALL BE RESPONSIBLE
FOR RESTORING DISTURBED AREAS TO
PRE -CONSTRUCTION CONDITION.
Exhibit 7
GRAVEL ENTRANCE SHALL BE MINIMUM 50 FEET IN LENGTH AND 12
FEET IN WIDTH WITH 20 F00T RADIUS AT EXISTING ROADWAY
PLAN VIEW
NOTES:
1. AGGREGATE SIZE - USE 2-3 INCH WASHED STONE (SURGE
STONE OR RAILROAD BALLAST).
2. GRAVEL PAD THICKNESS - 6 INCHES MINIMUM.
3. WIDTH - 20 FT. MINIMUM OR FULL WIDTH AT ACCESS POINTS
OF THE VEHICULAR ENTRANCE AND EXIT AREA, WHICHEVER IS
GREATER.
4. LENGTH - 50 FT. MINIMUM.
5. LOCATION - INSTALL CONSTRUCTION ENTRANCES AT LOCATIONS
SHOWN ON THESE PLANS TO LIMIT SEDIMENT FROM LEAVING
THE SITE AND TO PROVIDE FOR MAXIMUM UTILITY BY ALL
CONSTRUCTION VEHICLES. CONTRACTOR SHALL INSTALL
ADDITIONAL GRAVEL CONSTRUCTION ENTRANCES NOT INDICATED
ON THE PLANS REQUIRED FOR STAGING AND/OR BORROW
AREAS AND MAINTAIN AT NO ADDITIONAL EXPENSE TO THE
OWNER. CONTRACTOR SHALL SUPPLEMENT AND MAINTAIN
GRAVEL CONSTRUCTION ENTRANCES AT HIS EXPENSE UNTIL
FINAL ACCEPTANCE.
2"-3" WASHED STONE
(SURGE STONE OR
RAILROAD BALLAST)
J \-GEOTEXTILE FABRIC UNDER ENTIRE SUITABLE SUBGRADE
6" MINIMUM LENGTH AND WIDTH OF STONE
CROSS SECTION
CONSTRUCTON ENTRANCE Exhibit 8 ��
SITE
EXISTING ROADWAY
50' MINIMUM
ACCESS
J \-GEOTEXTILE FABRIC UNDER ENTIRE SUITABLE SUBGRADE
6" MINIMUM LENGTH AND WIDTH OF STONE
CROSS SECTION
CONSTRUCTON ENTRANCE Exhibit 8 ��
EROSION CONTROL NOTES:
1. THE CONTRACTOR SHALL EXERCISE EVERY REASONABLE PRECAUTION THROUGHOUT THE CONSTRUCTION OF
THE PROJECT TO PREVENT EROSION AND SILTATION. EROSION CONTROL MEASURES SHALL BE INSTALLED
AND MAINTAINED IN ACCORDANCE WITH NORTH CAROLINA SEDIMENT AND EROSION CONTROL GUIDELINES
AND AS DIRECTED BY THE DESIGNER.
2. ALL REPAIR WORK SHALL BE PERFORMED IN DRY OR ISOLATED AREAS, WITH NO STANDING WATER OR
WATER FLOWING THROUGH THE WORK AREA.
3. ALL EXCAVATED MATERIAL SHALL BE STOCKPILED WITHIN THE LIMITS OF DISTURBANCE FOR LATER REUSE
OR DISPOSAL. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLING APPROPRIATE STABILIZATION MEASURES
AROUND THE STOCKPILE AREA AND ANY TEMPORARY OR PERMANENT SPOIL AND TOPSOIL PILES TO
PREVENT EROSION AND SEDIMENTATION. ALL PERMANENT OR TEMPORARY SPOIL PILES SHALL HAVE SILT
FENCE INSTALLED ON THE LOW SIDE OF THE SPOIL PILES.
4. A TEMPORARY PUMP -AROUND SHALL BE UTILIZED BY THE CONTRACTOR DURING WORK ON THE STREAM
TO DIVERT FLOW FROM AND DEWATER THE DESIGNATED AREAS IN ORDER TO WORK. THE TEMPORARY
PUMP -AROUND USED BY THE CONTRACTOR SHALL MEET ALL REQUIREMENTS SPECIFIED IN THESE DETAILS.
THE TEMPORARY PUMP -AROUND SHALL BE INSTALLED AND REMOVED IN ACCORDANCE WITH THE
MANUFACTURER'S GUIDELINES. TWENTY-FOUR (24) HOURS PRIOR TO THE INITIATION OF PUMP -AROUND
ACTIVITIES, THE CONTRACTOR SHALL MEASURE THE APPROXIMATE FLOW RATE AT THE PUMP -AROUND
LOCATION. THE FLOW RATE SHALL BE SUBMITTED TO THE DESIGNER FOR APPROVAL. THE CONTRACTOR
SHALL, THEREAFTER, UTILIZE A PUMP(S) SUFFICIENT TO ACCOMMODATE 120% (1.2 TIMES) THE APPROVED
FLOW RATE.
5. IN THE EVENT OF A STORM, THE CONTRACTOR WILL BE RESPONSIBLE FOR THE REMOVAL OR PROTECTION
OF ANY EQUIPMENT, TOOLS, MATERIALS OR OTHER ITEMS NEEDED TO COMPLETE THE WORK THAT COULD
BE AFFECTED BY STORM FLOWS.
SILT FENCE SHALL BE INSTALLED AS DEPICTED ON THE PLANS PRIOR TO THE COMMENCEMENT OF
DISTURBANCE ACTIVITIES, SILT FENCE SHALL BE TEMPORARILY REMOVED IN ISOLATED WORK AREA TO
PERMIT GRADING OF THE RESTORED STREAM. IMMEDIATELY FOLLOWING THE COMPLETION OF STABILIZATION
MEASURES FOR EACH ISOLATED AREA AND PRIOR TO THE INITIATION OF WORK ON ANOTHER SECTION,
THE SILT FENCE SHALL BE REINSTALLED AT ITS ORIGINAL LOCATION. SILT FENCE SHALL BE MAINTAINED
HEREAFTER AND SHALL NOT BE REMOVED UNTIL GROUND COVER HAS BEEN FULLY ESTABLISHED WITHIN
THE LIMITS OF DISTURBANCE. SILT FENCE SHALL ALSO BE INSTALLED ON THE LOW SIDE OF ANY
TEMPORARY STOCKPILES OF EXCAVATED MATERIAL.
7. ALL DISTURBED SOILS WILL BE SEEDED FOR VEGETATIVE STABILIZATION FOLLOWING THE GUIDELINES
DESCRIBED ON THIS SHEET AND ACCORDING TO THE FOLLOWING SCHEDULE: TEMPORARY OR PERMANENT
SEEDING MUST BE APPLIED ON ALL GRADED SLOPES AND FILL WITHIN SEVEN CALENDAR DAYS,
PERMANENT SEEDING MUST BE APPLIED TO ALL DISTURBED AREAS WITHIN 15 WORKING DAYS OR 90
CALENDAR DAYS.
8. ALL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE CHECKED FOR STABILITY AND FUNCTIONAL
OPERATION FOLLOWING EVERY RUNOFF PRODUCING RAIN EVENT AND/OR AT LEAST ONCE PER WEEK. ANY
NEEDED MAINTENANCE OR REPAIRS SHALL BE MADE IMMEDIATELY TO MAINTAIN ALL MEASURES AS
DESIGNED. ACCUMULATED SEDIMENT SHALL BE REMOVED FROM CONTROL MEASURES WHEN THEY REACH
APPROXIMATELY 50% OF THEIR FUNCTIONAL CAPACITY. THESE MEASURES SHALL BE REMOVED IF
DISTURBED DURING MAINTENANCE. ALL SEEDED AREAS SHALL BE FERTILIZED, RESEEDED, AND MULCHED,
AS NECESSARY, TO PROMOTE THE ESTABLISHMENT OF VEGETATIVE COVER.
Exhibit 9
*THESE NOTES WERE TAKEN FROM THE RICHLAND CREEK STREAM RESTORATION PLANS, PREPARED BY KCI, DATED
MARCH 27, 2015. THE INTENT IS TO REPAIR OR REPLACE THE STREAM TO EXISTING CONDITIONS OR BETTER.
SEDIMENT AND EROSION CONTROL NOTES AECOM
a
EROSION CONTROL NOTES CONTINUED:
GROUND STABILIZATION
STABILIZATION
SITE DESCRIPTON
TIME
PERIMETER DIKES, SWALES,
7 DAYS
DITCHES, AND SLOPES
HIGH QUALITY WATER (HOW)
7 DAYS
ZONES
SLOPES STEEPER THAN 3:1
7 DAYS
SLOPES 3:1 OR FLATTER
7 DAYS
ALL OTHER AREAS WITH SLOPES
7 DAYS
FLATTER THAN 4:1
INSPECTIONS
WEEKLY INSPECTIONS REQUIRED.
RAIN GAUGE MUST BE PRESENT AT SITE.
INSPECTIONS REQUIRED AFTER 0.5" RAIN EVENTS.
INSPECTIONS ARE ONLY REQUIRED DURING
"NORMAL BUSINESS HOURS".
INSPECTION REPORTS MUST BE AVAILABLE
ON-SITE DURING BUSINESS HOURS UNLESS A SITE
SPECIFIC EXEMPTION IS APPROVED.
RECORD MUST BE KEPT FOR 3 YEARS AND
AVAILABLE UPON REQUEST.
ELECTRONICALLY AVAILABLE RECORDS MAY BE
SUBSTITUTED UNDER CERTAIN CONDITIONS.
TEMPORARY SEED MIX:
THE CONTRACTOR SHALL UTILIZE THE FOLLOWING SEED/FERTILIZER MIX IN SEEDING ALL DISTURBED AREAS WITHIN
THE PROJECT LIMITS:
SUMMER MIX (APRIL 15 - AUGUST 15)
GERMAN MILLET..... SETARIA ITALICA 20 LBS/ACRE
BROWNTOP MILLET UROCHLOA RAMOSA 20 LBS/ACRE
WINTER MIX (AUGUST 15 - APRIL 15)
RYE GRAIN SECALE CEREALE 100 LBS/ACRE
WHEAT TRITICUM AESTIVUM 20 LBS/ACRE
PERMANENT SEED MIX (CONSERVATION EASEMENT)
THE CONTRACTOR SHALL UTILIZE THE FOLLOWING SEED AND FERTILIZER SPECIFICATION IN ALL STREAMSIDE AND
FLOODPLAIN NATURAL AREAS:
APPLICATION RATE (IN MIX)
PERMANENT NATIVE SPECIES % OF MIX LBS/ACRES
ORCHARD GRASS - DACTYLIS GLOMERATA 7 1.5
BLUESTEM - ANDROPOGON GLOMERATUS 7 1.5
VIRGINIA WILDRYE - ELYMUS VIRGINICUS 7 1.5
RIVER OATS - CHASMANTHIUM LATIFOLIUM 7 1.5
PURPLE LOVE GRASS - ERAGROSTIS SPECTABILIS 7 1.5
DEERTONGUE - PANICUM CLANDESTINUM 32.5 7.5
SWTICHGRASS - PANICUM VIRGATUM 32.5 7.5
TOTALS 100 22.5
TEMPORARY NURSE CROP
ONE OF THE FOLLOWING SPECIES
WINTER MIX (AUGUST 15 - APRIL 15)
RYE GRAIN - SECALE CEREALE
WHEAT - TRITICUM AESTNUM
SUMMER MIX (APRIL 15 - AUGUST 15)
GERMAN MILLET - SETARIA ITALICA
BROWNTOP MILLET - UROCHLOA RAMOSA
APPLICATION RATE (IN MIX)
LBS/ACRES
40
30
10
10
FERTILIZER AND LIMESTONE SHALL BE APPLIED AT THE RATE OF 500 LBS/ACRE AND 2000 LBS/ACRE,
RESPECTIVELY. FERTILIZER SHALL BE 5-10-10 ANALYSIS. UPON SOIL ANALYSIS A DIFFERENT RATIO OF
FERTILIZER MAY BE USED.
•THESE NOTES WERE TAKEN FROM THE RICHLAND CREEK STREAM RESTORATION PLANS, PREPARED BY KCI, DATED
MARCH 27, 2015. THE INTENT IS TO REPAIR OR REPLACE THE STREAM TO EXISTING CONDITIONS OR BETTER.
SEDIMENT AND EROSION CONTROL NOTES
EROSION CONTROL NOTES CONTINUED:
SEEDBED PREPARATION:
THE SEEDBED SHALL BE COMPRISED OF LOOSE SOIL AND NOT COMPACTED. THIS MAY REQUIRE LIGHT MECHANICAL
LOOSENING OF THE SOIL. SOIL AMENDMENTS SHOULD FOLLOW THE FERTILIZER AND LIMING DESCRIPTION IN THE
ABOVE SECTIONS. FOLLOWING SEEDING, MULCHING SHALL FOLLOW THE BELOW APPLICATION METHODS AND
AMOUNTS.
MULCHING:
SEEDED AREAS ARE TO BE PROTECTED BY SPREADING STRAW MULCH UNIFORMLY TO FORM A CONTINUOUS
BLANKET (75% COVERAGE = 2 TONS/ACRE) OVER SEEDED AREAS. CONTRACTOR MAY PROPOSE ALTERNATE
METHODS OF SEED, FERTILIZER AND LIMING (HYDRO -SEEDING) UPON SUBMISSION TO THE DESIGNER OF
CALCULATIONS SHOWING THE EQUIVALENCY OF THE PROPOSED METHOD.
STREAM ZONE PLANTING:
LIVE STAKES: 1.5' TO 2' LENGTHS, Xz" TO 2" DIAMETER, 3 ROWS AT 2' CENTER SPACING ON ALL STREAM BANK,
RANDOM SPECIES PLACEMENT
COMMON NAME SCIENTIFIC NAME
BLACK WILLOW SALIX NIGRA
SILKY WILLOW SALIX SERICEA
SILKY DOGWOOD CORNUS AMOMUM
ELDERBERRY SAMBUCUS CANADENSIS
NOTES: COIR MATTING AND LIVE STAKES SHALL BE INSTALLED ALONG ANY DISTURBED BANKS WITHIN THE REPAIR
AREAS THAT DO NOT HAVE SOIL LIFTS. AT LEAST THREE OF THE LISTED SPECIES MUST BE INSTALLED AND NO
SINGLE LIVE STAKING SPECIES SHALL COMPOSE MORE THAN 40% OF THE TOTAL NUMBER OF LIVE STAKES TO BE
INSTALLED.
;THESE NOTES WERE TAKEN FROM THE RICHLAND CREEK STREAM RESTORATION PLANS, PREPARED BY KCI, DATED
MARCH 27, 2015. THE INTENT IS TO REPAIR OR REPLACE THE STREAM TO EXISTING CONDITIONS OR BETTER.
SEDIMENT AND EROSION CONTROL NOTES ECOM
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020591101
6-C
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