HomeMy WebLinkAbout20120190 Ver 1_Application_20120221�2
STATE OF NORTH CAROLINA 1 201?
DEPARTMENT OF TRANSPORTATI`Os'�'
BEVERLY EAVES PERDUE EUGENE TI 7R
GOVERNOR SECRETAR
February 16 2012
Ms Liz Hair 120190
US Army Corp of Engineers
Asheville Regulatory Field Office
151 Patton Avenue Room 208
Asheville N C 28801 5006
SUBJECT Secondary Road Paving/Bridge #83 Replacement and Pipe replacement, SR
1310 (Robinette Road) Alexander County
Dear Ms Hair
The North Carolina Department of Transportation ( NCDOT) requests authorization to replace
Bridge #83 and a 48 pipe in conjunction with a secondary road paving project on SR 1310
(Robinette Road) in Alexander County
At station 56 + 50 NCDOT proposes to replace an existing timber bridge with 50 foot long triple
pipes a 137" x 67 CMPA for the main flow and double 95' x 67 CMPA s for floodflow The
existing banks immediately upstream and downstream of the floodflow pipes will be excavated
to bankfull elevation and will then taper back to existing contours The excavated benches will
be stabilized with coir fiber matting Approximately 5 10 feet of Class II riprap will be utilized
at the pipe inlet and outlet for stabilization At station 41 +00 NCDOT proposes to replace an
existing 33 foot 48' CMP with a 50 foot 60 CMP Approximately 5 feet of riprap will be used
at the pipe inlet and outlet for structure stabilization Temporary cofferdams /bypass pumping
will be used to divert the stream flow around the construction sites as needed Upon project
completion all areas affected by temporary cofferdams will be restored back to pre project
conditions
The total scope of the work will impact 87 feet of Robinette Creek and an unnamed tributary to
Robinette Creek which is classified as Class B waters by the Division of Water Quality
The project is not located within 'h mile of any critical watershed area nor is SR 1310 a rural or
urban arterial therefore hazardous spill basins are not required Enclosed is the hazardous spill
basin checklist Based upon correspondence with the State Historic Preservation Office (SHPO)
dated 3/14/07 the proposed project area has been reviewed and SHPO has determined that no
historic properties will be affected (ER Number 07 0203)
Post Office Box 47 Shelby North Carolina 28151 0047
SR 1310 Robinette Road
Page 2
February 16 2012
This office has conducted a GIS and field survey for the project threatened /endangered species
The federally listed species for Alexander County (USFWS listed date September 22 2010)
include dwarf flowered heartleaf (Hexastylzs naniflora) and the bog turtle (Glyptemys
muhlenbergu) (T /SA Threatened due to similarity of appearance) National Heritage Program
records document the nearest dwarf flowered heartleaf location 14 5 miles southeast of the
proposed project area (in Catawba County) The heartleaf is usually found on dry to moist ravine
slopes (usually north facing and of the oak hickory pine forest type) and in boggy areas near
sprmgheads There is no suitable habitat within the proposed project area and no species were
observed Natural Heritage Program records document the nearest bog turtle location 3 6 miles
northwest of the proposed project area (in Wilkes County) Bog turtles are typically found in
bogs marshes and wet pastures T /SA species are not subject to Section 7 consultation
however there is no suitable habitat located within the project area and no impact on this species
is anticipated
I have enclosed a pre construction notification for a NW# 14 sketches of planned activities and
location maps relative to the project Please note that any mitigation that may be necessary for
the construction of the project will be provided in accordance with the procedures detailed in the
U S Army Corp of Engineers letter dated September 1 2004 from Mr Ken Jolly to Dr Gregory
J Thorpe
Project information for the 401 Automated Payment Procedure is as follows
• Work order number 150459 55120005 12C 002048 3300
• TIP # NA
• Project Category $240 00 Fee
If you have any questions or concerns please feel free to contact me at (704) 480 -9044 Thank
you for your time and consideration to this matter
Respectfully yours
M L Holder P E
Division Engineer
Twelfth Division
BY 1x2tJ4 YL -'%—
Trish Simon
Division 12 Environmental Supervisor
Enclosures
Cc Brian Wrenn DWQ 401 /Transportation Permitting Unit
Polly Lespmasse DWQ Mooresville Regional Office
W ATF9QG
Office Use Only
Corps action ID no
DWQ project no
Form Version 1 3 Dec 10 2008
Page 1 of 11
PCN Form — Version 1 3 December 10 2008 Version
Pre - Construction Notification PC Form
A Applicant Information
1
Processing
la
Type(s) of approval sought from the
Corps
®Section 404 Permit El Section 10 Permit
1 b Specify Nationwide Permit (NWP) number 14 or General Permit (GP) number
1c
Has the N WP or GP number been verified by the Corps?
❑ Yes
® No
1d
Type(s) of approval sought from the DWQ (check all that apply)
N 401 Water Quality Certification — Regular ❑ Non 404 Jurisdictional General Permit
[:1401 Water Quality Certification — Express ❑ 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 ® 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 impacts? If so attach the acceptance letter from mitigation bank or in lieu
fee program
❑ Yes
® No
1g
Is the project located in any of NC s twenty coastal counties If yes answer 1 h
below
❑ Yes
® 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
SR 1310 Robinette Road (Bridge #83 Replacement and pipe replacement)
2b
County
Alexander
2c
Nearest municipality / town
Taylorswile
2d
Subdivision name
NA
2e
NCDOT only T I P or state
project no
3
Owner Information
3a
Name(s) on Recorded Deed
NCDOT Right of Way
3b
Deed Book and Page No
3c
Responsible Party (for LLC i f
applicable)
3d
Street address
3e
City state zip
3f
Telephone no
3g
Fax no
3h
Email address
Page 1 of 11
PCN Form — Version 1 3 December 10 2008 Version
4
Applicant Information (if different from owner)
4a
Applicant is
❑ Agent ❑ Other specify
4b
Name
Mike Holder
4c Busmes s name
(if applicable)
N C Department of Transportation Division 12
4d
Street address
1710 East Marion Street
4e
City state zip
Shelby NC 28151
4f
Telephone no
704 480 9020
4g
Fax no
704 480 5401
4h
Email address
mholder @ncdot gov
5
Agent/Consultant Information (if applicable)
5a
Name
Trish Simon
5b
Business name
(if applicable)
N C Department of Transportation Division 12
5c Street address
1710 East Marion Street
5d
City state zip
Shelby NC 28151
5e
Telephone no
704 480 9044
5f
Fax no
704 480 5401
5g
Email address
tsimon @ncdot gov
Page 2 of 11
PCN Form —Version 1 3 December 10 2008 Version
B
Project Information and Prior Project History
1
Property Identification
la
Property identification no (tax PIN or parcel ID)
NA
Latitude 35 99123 Longitude - 8124948
Bridge #83 Replacement
lb
Site coordinates (in decimal degrees)
Latitude 35 98909 Longitude -8124575
Pipe Replacement
(DD DDDDDD) ( DD DDDDDD)
1c
Property size
< 10 acres /permit sites Entire project site = 8 1 acres
2
Surface Waters
2a
Name of nearest body of water (stream river etc) to
Robinette Creek and unnamed tributary to Robinette
proposed project
Creek
2b
Water Quality Classification of nearest receiving water
B
2c
River basin
Catawba
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
Bridge and pipe are on a unpaved secondary road that is to be paved Designated landuse is mostly wooded
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
200
3d
Explain the purpose of the proposed project
The purpose of the proposed work is to replace a functionally obsolete bridge and a deteriorating pipe and to pave an
unpaved secondary road to paved road standards for the safety of the traveling public
3e
Describe the overall project in detail including the type of equipment to be used
Station 56 +50 Replace an existing timber bridge with 50 ft CMPA s a 137 x 87 main flow pipe and two double 95 x
67 floodflow pipes The existing bank immediately upstream and downstream of the floodflow pipes will be excavated
down to bankfull elevation and will then taper back to existing contours The excavated benches will be stabilized with
coir fiber matting Approximately 5 10 feet of Class 11 nprap will be utilized at the pipe inlet and outlet for stabilization
Station 41 +00 Replace an existing 33 foot 48 CMP with a 50 ft 60 CMP Approximately 5 feet of nprap will be used at
the pipe inlet and outlet for structure stabilization
Temporary cofferdams /bypass pumping will be used to divert the stream flow around the construction sites as needed
All areas affected by temporary cofferdams will be restored back to pre - project conditions The Project will be
constructed using typical heavy equipment (trackhoe backhoe etc)
Page 3 of 11
PCN Form — Version 1 3 December 10 2008 Version
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?
Comments Jurisdictional determination by Division 12
Environmental Office
❑ Yes ® No ❑ Unknown
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
5
Project History
5a
Have permits or certifications been requested or obtained for
this project (including all prior phases) in the past?
❑ Yes ® No ❑ Unknown
5b
If yes explain in detail according to help file instructions
6
Future Project Plans
6a
Is this a phased project?
❑ Yes ® No
6b
If yes explain
Page 4 of 11
PCN Form — Version 1 3 December 10 2008 Version
C Proposed Impacts Inventory
1 Impacts Summary
la Which sections were completed below for your project (check all that apply)
❑ Wetlands ® Streams tributaries ❑ 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
2b
2c
2d
2e
2f
Wetland impact
Type of jurisdiction
number —
Type of impact
Type of wetland
Forested
(Corps 404 10
Area of impact
Permanent (P) or
(if known)
DWQ —non 404 other)
(acres)
Temporary T
W1 ❑ P ❑ T
❑ Yes
❑ Corps
❑ No
❑ DWQ
W2 ❑ P ❑ T
❑ Yes
❑ Corps
❑ No
❑ DWQ
W3 ❑ P ❑ T
❑ Yes
❑ Corps
❑ No
❑ DWQ
W4 ❑ P ❑ T
❑ Yes
❑ Corps
❑ No
❑ DWQ
W5 ❑ P ❑ T
❑ Yes
❑ Corps
❑ No
❑ DWQ
W6 ❑ P ❑ T
❑ Yes
❑ Corps
❑ No
❑ DWQ
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
3b
3c
3d
3e
3f
3g
Stream impact
Type of impact
Stream name
Perennial
Type of jurisdiction
Average
Impact
number
(PER) or
(Corps 404 10
stream
length
Permanent (P) or
intermittent
DWQ — non 404
width
(linear
Temporary (T)
(INT)?
other)
(feet)
feet)
Site 1 Bridge
® PER
® Corps
S1 ®P ❑ T
Replacement with
Robinette Creek
❑ INT
® DWQ
85
50
pipe
S2 ® P ❑ T
Site 1 Riprap
stabilization
Robinette Creek
® PER
❑ INT
® Corps
® DWQ
85
20
S3 ❑ P ®T
Site 1 Cofferdam
bypass pumping
Robinette Creek
® PER
❑ INT
® Corps
® DWQ
85
100
Site 2 Pipe
S4 ®P ❑ T
Replacement
UT to Robinette
❑ PER
® Corps
25
17
(Increase in pipe
Creek
® INT
® DWQ
length)
S5 []PET
Site 2 Cofferdam
bypass pumping
UT to Robinette
❑ PER
® Corps
25
100
(if needed)
Creek
® INT
® DWQ
S6 ❑ P ❑ T
❑ PER
❑ Corps
❑ INT
❑ DWQ
3h Total stream and tributary impacts
87
31 Comments * Permanent Impacts
Page 5 of 11
PCN Form —Version 1 3 December 10 2008 Version
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 individually list all open water impacts below
4a 4b 4c 4d 4e
Open water Name of waterbody
impact number — (if applicable) Type of impact Waterbody type Area of impact (acres)
Permanent (P) or
Temporary T
01 ❑P ❑T
02 ❑P ❑T
03 ❑P ❑T
04 ❑P ❑T
4f Total open water impacts
4g Comments
5 Pond or Lake Construction
If and or lake construction proposed then complete the chart below
5a 5b 5c 5d 5e
Wetland Impacts (acres) Stream Impacts (feet) Upland
Pond ID Proposed use or purpose I I I (acres)
number of pond
Flooded I Filled I Excavated I Flooded I Filled I Excavated I Flooded
P1
P2
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)
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 6d
Buffer impact
number — Reason
Permanent (P) or for
Temporary T impact
B1 ❑P ❑T
B2 ❑P ❑T
■ ' ■
61 Comments
❑ Neuse ❑ Tar Pamlico ❑ Other
❑ Catawba ❑ Randleman
6e I 6f I 6g
Buffer Zone 1 impact Zone 2 impact
Stream name mitigation (square feet) (square feet)
required'?
❑ Yes
❑ No
❑ Yes
❑ No
❑ Yes
❑ No
6h Total buffer impacts
Page 6 of 11
PCN Form — Version 1 3 December 10 2008 Version
D Impact Justification and Mitigation
1 Avoidance and Minimization
la Specifically describe measures taken to avoid or minimize the proposed impacts in designing project
Bank excavation to bankfull elevation immediately upstream and downstream of the floodflow pipes proposed to allow for high
flow passage and reduce erosion
lb Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques
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 ❑ No
2b If yes mitigation is required by (check all that apply)
❑ DWQ ❑ Corps
2c If yes which mitigat ion 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
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
❑ warm ❑ cool ❑cold
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 7 of 11
PCN Form —Version 1 3 December 10 2008 Version
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
buffer mitigation?
❑ Yes ® No
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
Zone
6c
Reason for impact
6d
Total impact
(square feet)
Multiplier
6e
Required mitigation
(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 8 of 11
PCN Form — Version 1 3 December 10 2008 Version
E
Stormwater Management and Diffuse Flow Plan (required by DWQ)
1
Diffuse Flow Plan
1 a
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
❑ Yes ❑ No
Comments
2
Stormwater Management Plan
2a
What is the overall percent imperviousness of this project?
NA %
2b
Does this project require a Stormwater Management Plan?
® Yes ❑ No
2c
If this project DOES NOT require a Stormwater Management Plan explain why Complies with NCDOT s individual
NPDES permit NCS000250
2d
If this project DOES require a Stormwater Management Plan then provide a brief narrative description of the plan
❑ Certified Local Government
2e
Who will be responsible for the review of the Stormwater Management Plan?
❑ DWQ Stormwater Program
® DWQ 401 Unit
3
Certified Local Government Stormwater Review
3a
In which local government s jurisdiction is this project?
NA
❑ Phase 11
❑ NSW
3b
Which of the following locally implemented stormwater management programs
El
apply (check all that apply)
El ❑ 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
(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 9 of 11
PCN Form —Version 1 3 December 10 2008 Version
F Supplementary Information
1 Environmental Documentation (DWQ Requirement)
la Does the project involve an expenditure of public (federal /state /local) funds or the
® 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
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 ® No
or Riparian Buffer Rules (15A NCAC 2B 0200)?
2b Is this an after the fact permit application?
❑ Yes ® 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
The project is classified as a minimum critiena project which has low potential for cumulative /indirect impacts and will not
result in additional development which could impact water quality
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 10 of 11
PCN Form — Version 1 3 December 10 2008 Version
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 ® No
impacts?
El Raleigh
5c If yes ind icate the USFWS Field Office you have contacted
❑ Asheville
5d What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical
Habitat?
NC Natural Heritage Program database and on site survey
6 Essential Fish Habitat (Corps Requirement)
6a Will this project occur in or near an area designated as essential fish habitats
❑ Yes ® No
6b What data sources did you use to determine whether your site would impact Essential Fish Habitat?
No salt marshes oyster reefs or seagrass beds in the vicinity of the project
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?
The State Historic Preservation Office review of project ER Number 07 0203 3/14/07
8 Flood Zone Designation (Corps Requirement)
8a Will this project occur in a FEMA designated 100 year floodplain?
❑ Yes ® No
8b If yes explain how project meets FEMA requirements
8c What source(s) did you use to make the floodplain determination? FEMA FIRM panal number 37103832
r�
Applicant/Agent s Printed Name
Date
Applicant/Agent s Signature
(Agents signature is valid only if an authorization letter from the applicant
is provided
Page 11 of 11
PCN Form — Version 1 3 December 10 2008 Version
Secondary Road Paving /Bridge #83 Replacement & Pipe Replacement
SR 1310, Robinette Road
Alexander County
SR 152' 1 J
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ette Road 5 SR 1429
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Name TAYLORSVILLE Location 035 9908256 N 081 2418871 W
Date 2/15/2012 Caption BR#83 Rplc/Plpe Rplc/Sec Rd Paving Robinette Rd (SR1310)
Scale 1 inch equals 1000 feet Robinette Crk UT Catawba River Basin
Copynght (C) 1998 Maptech Inc
Class II Rip Rap or shot rock
at allfour corners not to
exceed more than 5 unles
otherwise noted
Take the ditches on the North
end of the stream along the
headwall andthe 5 of riprap in
front of the headwall
Place 5 Class II riprop along the
face of the bench from the end
of the culvert to the excavated
bench @ allfour corners
WOODS
W
\ � W
V
0 F
WOODS � y
\ 0, F T ��
WOODS
Hatched Area to be excavated 1
to create flood bench and to p i
tie area back into he existing y
topography M.
A proposed 95 xG7 x50 CMAP on WOODS
each side of a 137 x87 x50 CMAP
(Main Flow)
Pumping system to be used to
divert the stream around the
construction site as needed
Bed reconstruction to take place
after construction
Any contaminated water within
the construction site isto be
pumped into a silt bag
Silt fence is to be placed around
stockpile and project as it allows
Upon completion of the project all
silt fences are to be placed as
needed Also seeding and mulching
of disturbed areas
Divert runoff into storage basins or
into TRSC A s before leaving the project
Place contaminated devices at the end
of silt fence
Place TRSC As or Special Sediment Control
Fence in the low points with weep holes in
silt fence as needed
Reference the Best Management Practices
for Construction and Maintenance Activities
by the NCDOT Chapter 4
�O
WOODS
TBM �
y� WOODS
PP /
V
WOODS
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12th Div NCDOT
Bridge Maintenance
Replace Bridge
with Culvert
SR 1310 Robinette Rd
Alexander Co
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Upstream
Secondary Road Paving/
Bridge #83 Replacement
a_ St
56 +50
SR 1310 (Robinette Rd)
Alexander County
Downstream
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Secondary Road Paving/
Pipe Replacement @
St 41 +00
SR 1310 (Robinette Rd)
Alexander County
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Unnamed Tributary to
the Lower Little River
Nail Set in the
Base of an 18
Hickory Assume
Elev 100 0
Lyr /
Existing Drainage Ditch..,,
Proposed 60 CMP
Approx 50 Long -
With an inlet Headwall
Existing Drainage Ditch
Robinette Rd
Centerline Pro'osed Rd
I
Existing 48 CMP
Approx 33 Long
to be removed
Class II Rip Rap or shot rock at all four
corners not to exceed more than 5 unless
otherwise noted
Take the ditched on the North end
of the stream along the headwall and
the 5 of Rip Rap in frontof the headwall
Pumping system to be used to divert the
stream around the constuction site as
needed Bed reconstruction to take
place after construction
Any contaminated water within the
construction site is to be pumped
into a silt bag
Silt fence is to be placd around stockpile
and project as it allows
Upon completion of the project all silt
fences are to be placed as needed Also
seeding and mulching of disturbed areas
Divert runoff into storage basins or into
TRSC A s before leaving the project
Place contaminated devices at the end
of silt fence
Place TRSC A s or Special Sediment Control
Fence in the low points with weep holes in
silt fence as needed
Reference the Best Management Practices
for Construction and Maintenance Activities
by NCDOT Chapter 4
12th Div NCDOT
Bridge Maintenance
Pipe Replacement
Robinette Rd SR 1310
Alexander County
S1 y!4-o0
Revised FB B 3 drs
NCDOT
HAZARDOUS SPILL BASIN CHECKLIST
Division 19 County Alexander Project ID 12C 002048
River Basin Catawba Bridge No Bridge #83 and pipe
Route Two sites on SR 1310 (Robinette Road) Stream Robinette
Creek and an UT to Robinette Creek
Water Quality Criteria
Yes No
Stream Crossing Blue Line On USGS lv r
ORW r r
WSI r r"
WS II,III OR IV, Crossing Within 0 5mi of W S Critical Area r r
Roadway Criteria
Route Designation-
Arterial Urban
Arterial Rural
Additional Site Information
Is a Hazardous Spill Basin Required?
Yes No
r ry
F r
Yes No
r r% ow
Criteria Based Upon NCDOT "Best Management Practices for the
Protection of Surface Waters" (March, 1997)
i
EROSION AND SEDIMENTATION
CONTROL PLAN
ALEXANDER COUNTY
� _ WB— # 12C 002 048
PREPARED BY-'
R TODD LUTZ
Certification # 232
STATE OF NORTH CAROLINA
DIVISION OF HIGHWAYS
r
NCG01 Permit Compliance Language for EC Plans
THESE EROSION AND SEDIMENT CONTROL PLANS COMPLY WITH THE
REGULATIONS SET FORTH BY THE NCG 010000 GENERAL CONSTRUCTION
PERMIT EFFECTIVE AUGUST 3, 2011 ISSUED BY THE NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF
WATER QUALITY
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Erosion Control Schedule
S R 1310 Robinette Rd
WB S #12C 002048
1 All adequate temporary erosion control measures will be installed before
clearing and grubbing operations begin
2 As construction progresses, temporary and permanent erosion control
devices shall be installed in a timely manner, according to any
requirements set out in G S 113A -57
3 All siltation and erosion control devices shall be properly maintained
until no longer needed
4 On projects performed by D O T Maintenance Forces, request will
promptly be made to the Division Roadside Environmental Unit for stage
and permanent seeding
5 Any removal of siltation devices will be based on the condition of
established ground cover of that area the device is serving
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North Carolina Department of Transportation
Division of Highways
Division 12, District 2
Date 2/2/12
County Alexander County
Township Little River Township
Road SR 1310 ( Robinette Rd )
Location From SR 1334 ( Mt Olive Ch Rd) to
SR 1311 ( Gill Childers Rd )
Length 5800 Feet (1 1 miles)
Right of way 60 Foot Right of way
Type of Construction Grade, Base and Pave
Notes
This Protect will be built in two phases Phase 1 from approx
Sta 0 +00 — 25 +00 and Phase 2 from Sta 25 +00 — 58 +00
18" Wattles will be used on this protect
See Standard Drawings attached for proper construction of erosion
control devices
EROSION CONTROL
SYMBOLS
DRAINAGE AREA ( refer to calculation sheets)
TEMPORARY ROCK SILT CHECK TYPE A
SILT BASIN TYPE B
TEMPORARY DIVERSION -TDB
TEMPORARY SILT DITCH
TSD -
WATTLE (18 )
%+'fi
WATTLE WITH PAM (18 )
rFr�tot
T""
TEMPORARY ROCK SILT CHECK TYPE B
-
TEMPORARY ROCK SEDIMENT DAM TYPE B a
ROCK PIPE INLET PROTECTION
ROCK LINED DITCH
DIRECTION OF WATER FLOW
BREAKPOINT _ _BP _
ROCK INLET PROTECTION TYPE C
EROSION CONTROL MATTING
PERMANENT SOIL REINFORCEMENT MAT
( PSRM )
SILT FENCE --492 Nei
PIPE OUTLET ENERGY DISSIPATOR Msm
CORE FIBER BAFFLE CFB
INFILTRATION BASIN E��
7 +00
5 +00
3 +00
SR 1310 Robinette Rd
ive Church Rd SR1334
1
8
Sheet 1
Ij
0 +00
10 +00
18
RCP
I 60
RW 18 x9 x3
2 CFB
o
5 /o
Grade
60 day option
8 +00
24
RCP
I
18 x9 x3
2 CFB
_
I
3%
Grade
u
60 day option
�
6 +00
18
RCP
1
18 x9 x3
J
2 CFB
60 day option
F�
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3%
Grade
� --
— —
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4 +00
B
– – – –
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–
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30 day option
''°leant"
I
2 +00
'
S r
Q
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7%
Grade
}
I
14 x7 x2
2 CFB
ive Church Rd SR1334
1
8
Sheet 1
Ij
0 +00
19 +00
17 +00
15 +00
13 +00
11 +00
SR 1310 Robinette Rd
4'
18
18 RCP
u
F�
60 F-
R/W
_0
Sheet 2
4%
Grade
60 day option
14 +00
I 12 +00
18 x9 x3
2 CFB
I 4%
grade
60 day option
I
I
I 10+00
20 +00
JAL
60
I
R/w
18 x9 x3
2 CFB
I
I
60 day option
18 +00
I
1
I
Grade
i
I
16 +00
5 18 x9 x3
2 CFB
F�
60 F-
R/W
_0
Sheet 2
4%
Grade
60 day option
14 +00
I 12 +00
18 x9 x3
2 CFB
I 4%
grade
60 day option
I
I
I 10+00
SR 1310 Robinette Rd
18 x9 x 3
2 CFB
F— I
29 +00 1
18 RCP
I'
— — L
L
27 +00
40
I
I
23 +00
18x9 TTJ
2 CFB
21 +00
60
R/W
30 +00
60
RW
1%
Grade
28 +00
60 day option
18x9x3
2 CFB
F 26 +00
I
18x9x 3
1H i 2 CFB
TT
I 1%
60 day option
1 Ohl
— — I
I
18 RCP I 22 +00
I
60 day option
_ _ I 1%
Grade
— 20 +00
Sheet 3
SR 1310 Robinette Rd
-- 40 +00
— — — — — B P — — — — — —
I
39 +00 �.._ — — I 60 day option
18 x9 x3 I 1%
4 weir �— °� I Grade
2 CFB
18 RCP I 38 +00
I
37 +00 _ _ _ EL IF _ _ _ _ _ _ 1%
Grade
18 x9 x3 F— I
4 weir
2 CFB I 36 +00
18 RCP
I
60 day option
35 +00
B P I 1%
— — — — — — — — — — — — — — Grade
34 +00
33 +00 36 RCP
L3C 2 x 3 2 4 Dandelion
eir RC Drive
B �—
10 I
60 day option
31 +00
E--- I 1%
I Grade
RNV IV 30 +00
Sheet 4
47 +00
18 x9 x3
2 CFB
SR1310 Robinette Rd
— — — — —
B F
— —
60
I RNV
I
17
18 RC
45 +00 I �—
�— 16
E--
E--
43+00 -
12x6x3
4 weir '
2 CFB 24 RCP
I 15
I �
I 60 Pipe 12 x 6 x 3
41 +00 by bridge dept 4 weir
2 CFB
I I 1%
Grade
60
R/W — — — — — B �P — — — — I 40 +00
Sheet 5
50 +00
60
I RNV
I
I
2%
I Grade
I 48 +00
I
60 Day Option
I
I
I
I 46 +00
I
I
I 1%
I Grade
I
I
I
I
I
12 x6 x3
4 weir
I
2 CFB
I 42 +00
I
I 60 Pipe 12 x 6 x 3
41 +00 by bridge dept 4 weir
2 CFB
I I 1%
Grade
60
R/W — — — — — B �P — — — — I 40 +00
Sheet 5
I
I
59 +00 1
1% I
Grade
I
I
Gill Childers SR 1311
i
I
57 +00
1% p
Grade I
7*92xy x3 ir
55 +00
18 x9 x3
4 Weir
2 CFB
63 +00
12 x6 x3
4 Weir
2 CFB
51 +00
.E
i
SR 1310 Robinette Rd
18 RCP
19
56 +00
60 +00
18 x9 x3
60 R/W
I
I
_D
— —
_
PROJECT
I
I
24 RCP
I
I 58 +00
I
I
54 +00
I
I
4%
12 x 6 x3
1%
21
�Fu'
I
Grad 4 Weir
2 CFB
�®
18 RCP
19
56 +00
NAgwimmitir 18 RCP
I I
1%
18 I Grade
B +P — — — — — 50 +00
Sheet 6
18 x9 x3
I
4 Weir
_
2 CFB
I
1%
Grade
60 Day Option
I
I
54 +00
I
I
I
1%
Grade
60 Day Option
I
52 +00
NAgwimmitir 18 RCP
I I
1%
18 I Grade
B +P — — — — — 50 +00
Sheet 6
COIR FIBER BAFFLE
Description
Furnish material install and maintain coin fiber baffles according to the details in the
plans or in locations as directed Coir Fiber Baffles shall be installed in silt basins and
sediment dams at drainage outlets Work includes providing all materials placing
securing excavating and backfilling of Coir Faber Baffles
Materials
(A) Coir Fiber Mat
Matting Provide matting to meet the following requirements
100% coconut fiber (coin) twine woven into high strength matrix
Thickness - 0 30 in minimum
Tensile Strength 1348 x 626 lb /ft minimum
Elongation
Flexibility (mg cm)
Flow Velocity
Weight
Size
C Factor
Open Area (measured)
(B) Staples
34% x 38% maximum
65030 x 29590
Observed 11 ft /sec
20 oz /SY
6 6 x 164 ft (120 SY)
0 002
50%
Provide staples made of 0 125 in diameter new steel wire formed into a u shape not less
than 12" in length with a throat of 1" in width
(C) Posts
Steel posts shall be at least 5 ft in length, approximately 13/8 wide measured parallel to
the fence and have a minimum weight of 125 lb /ft of length The post shall be equipped
with an anchor plate having a minimum area of 14 0 square inches and shall be of the
self fastener angle steel type to have a means of retaining wire and coin fiber mat in the
desired position without displacement
(D) Wire
Provide 9 gauge high tension wire strand of variable lengths
Construction Methods
Place the coin fiber baffles immediately upon excavation of basins Install three (3)
baffles in basins with a spacing of one fourth (1/4) the basin length and according to the
detail sheets Two (2) coin fiber baffles shall be installed in basins less than 20 ft in
length with a spacing of one third (1/3) the basin length
Steel posts shall be placed at a depth of 2 ft below the basin surface with a maximum
spacing of 4 ft The top height of the coir fiber baffles shall not be below the elevation of
the emergency spillway base of dams and basms Attach a 9 gauge high tension wire
strand to the steel posts at a height of 3 ft with plastic ties or wire fasteners Install a
steel post into side of the basin at a variable depth and a height of 3 ft from the bottom of
the basin to anchor coin fiber mat Secure anchor post to the upright steel post in basin
with wire fasteners
The coin fiber mat shall be draped over the wire strand to a minimum of 3 ft of material
on each side of the strand Secure the coin fiber mat to the wire strand with plastic ties or
wire fasteners Place staples across the matting at ends and ,functions approximately 1 ft
apart at the bottom and side slopes of basin Overlap matting at least 6" where 2 or more
widths of matting are installed side by side Refer to details in the plan sheets The
Engineer may require adjustments in the stapling requirements to fit individual site
conditions
Measurement and Payment
Coar Faber Baffles will be measured and paid for by the actual number of linear feet of
coin fiber baffles which are installed and accepted Such price and payment will be full
compensation for all work covered by this section including, but not limited to,
furnishing all materials labor, equipment and incidentals necessary to install the coin
fiber baffles
Payment will be made under
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12 ROLLED EROSION CONTROL PRODUCTS
13 1631 -1 DESCRIPTION
14 Furnish place and maintain a rolled erosion control product (matting) on previously shaped
15 and seeded drainage ditches slopes or other areas at locations shown in the contract or as
16 directed Work includes providing all materials excavation and backfilling placing and
17 securing matting and maintaining the drainage ditch
18 The conditions which occur during the construction of the project will determine the quantity
19 of matting placed The quantity of matting may be increased decreased or eliminated entirely
20 as directed Such vanations in quantity will not be considered as alterations in the details of
21 construction or a change in the character of the work
22 16312 MATERIALS
23 Refer to Division 10
Item Section
Matting for Erosion Control 10608
Staples 10608
24 16313 CONSTRUCTION METHODS
25 Place matting immediately following seeding Provide a smooth soil surface free from stones
26 clods or debris that will prevent the contact of the matting with the soil Preserve the required
27 line grade and cross section of the area covered
28 Unroll matting in the direction of the flow of water and apply without stretching so that it will
29 lie smoothly but loosely on the soil surface Bury the up channel or top of slope end of each
30 piece of matting in a narrow trench at least 6' deep and tamp firmly Where one roll of
31 matting ends and a second roll begins overlap the end of the upper roll over the buned end of
32 the second roll so there is a 4 overlap Construct staple checks 4 on center and every 30 ft
33 longitudinally in the matting or as directed Fold over and bury matting to the full depth of
34 the trench close and tamp firmly Overlap matting at least 4' where 2 or more widths of
35 matting are lard side by side
36 Place staples across matting at ends junctions and check trenches approximately 10 apart
37 Place staples along the outer edges and down the center of each strip of matting 3 ft apart
38 Place staples along all lapped edges 10" apart
39 Install product with netting on the top side when excelsior or straw matting is used
The Engineer may require adjustments in the trenching or stapling requirements to fit
individual cut or fill slope conditions
3 1631 -4 MEASUREMENT AND PAYMENT
4 Matting will be measured and paid in square yards as measured along the surface of the
5 ground over which matting has been acceptably placed
6 Payment will be made under
Pay Item Pay Unit
Matting For Erosion Control Square Yard
PERMANENT SOIL REINFORCEMENT MAT
Description
This work consists of furnishing and placing Permanent Soil Reinforcement Mat, of the
type specified over previously prepared areas as directed
Materials
The product shall be a permanent erosion control reinforcement mat and shall be
constructed of synthetic or a combination of coconut and synthetic fibers evenly
distributed throughout the mat between a bottom UV stabilized netting and a heavy duty
UV stabilized top net The matting shall be stitched together with UV stabilized
polypropylene thread to form a permanent three dimensional structure The mat shall
have the following minimum physical properties
Property
Test Method
Value
Unit
Light Penetration
ASTM D6567
9
%
Thickness
ASTM D6525
040
in
Mass Per Unit Area
ASTM D6566
055
lb /sy
Tensile Strength
ASTM D6818
385
lb /ft
Elongation (Maximum)
ASTM D6818
49
%
Resiliency
ASTM D 1777
>70
%
UV Stability *
ASTM D4355
>80
%
Porosity (Permanent Net)
ECTC Guidelines
>85
%
Maximum Perrmssible Shear
Performance Bench
>8 0
lb /ft2
Stress (Vegetated)
Test
Maximum Allowable Velocity
Performance Bench
>16 0
ft/s
(Vegetated)
Test
*ASTM D1682 Tensile Strength and % strength retention of material after 1000 hours of
exposure
Submit a certification (Type 1, 2, or 3) from the manufacturer showing
(A) the chemical and physical properties of the mat used and
(B) conformance of the mat with this specification
Construction Methods
Matting shall be installed in accordance with Subarticle 1631 3(B) of the Standard
Specifications
All areas to be protected with the mat shall be brought to final grade and seeded in
accordance with Section 1660 of the Standard Specifications The surface of the soil
shall be smooth, firm stable and free of rocks, clods roots or other obstructions that
would prevent the mat from lying in direct contact with the soil surface Areas where the
mat is to be placed will not need to be mulched
Measurement and Payment
Permanent Soil Reinforcement Mat will be measured and paid for as the actual number of
square yards measured along the surface of the ground over which Permanent Soil
Reinforcement Mat is installed and accepted Overlaps will not be included in the
measurement and will be considered as incidental to the work Such payment shall be
full compensation for furnishing and installing the mat including overlaps, and for all
required maintenance
Payment will be made under
Pay Item Pay Unit
Permanent Soil Reinforcement Mat Square Yard
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INFILTRATION BASIN WITH BAFFLES
Description
Provide an infiltration basin to remove sediment from construction site runoff at locations shown
in the erosion control plans See the Infiltration Basin with Baffles Detail sheet provided in the
erosion control plans Work includes constructing sediment basin, installation of coin fiber
baffles, providing and placing geotextile emergency spillway liner, providing coin fiber mat
stabilization for the emergency spillway outlet disposmg of excess materials, removing
geotextile liner and coir fiber mat, backfilling basm area with suitable material and providing
proper drainage when basin area is abandoned
Materials
Item
Section
Geotexhle for Soil Stabilization, Type 4
1056
Staples
1060 -8
Coir Fiber Mat
1060 -14
Coir Fiber Baffle
1640
Anchors Staples, stakes, or reinforcement bars shall be used as anchors
Wooden Stakes
Provide hardwood stakes 12 "- 24" long with a 2" x 2" nominal square cross section. One
end of the stake must be sharpened or beveled to facilitate driving through the coir fiber
mat and down into the underlying soil The other end ofthe stake needs to have a 1 "- 2"
long head at the top with a 1 "- 2" notch following to catch and secure the cor fiber mat
Steel Reinforcement Bars
Provide uncoated #10 steel reinforcement bars 24" nominal length The bars shall have a
4" diameter bend at one end with a 4" straight section at the tip to catch and secure the
coin fiber mat
Staples
Provide staples made of 0 125" diameter new steel wire formed into a u shape not less
than 12" in length with a throat of 1" in width
Construction Methods
Excavate basin according to the erosion control plans with basin surface free of obstructions,
debris, and pockets of low- density material. Excavation into or below the water table shall not
occur, and avoid compacting the bottom of the basm with equipment tires, excavation bucket,
etc Construct the coin fiber baffles according to Roadway Standard Drawings No 1640 01 and
Section 1640 of the Standard Specifications Construct earth berm around perimeter of
infiltration basin as shown in the detail and the earth berm height shall be limited to 3 ft
Construct the emergency spillway according to the Infiltration Basin with Baffles Detail sheet in
the erosion control plans Line emergency spillway with geotextile unrolled in the direction of
flow and lay smoothly but loosely on soil surface without creases Bury edges of geotextile in a
trench at least 5" deep and tamp firmly Make vertical overlaps a minimum of 18" with upstream
geotextile overlapping the downstream geotextile Secure geotextile with eleven gauge wire
staples shaped into a u shape with a length of not less than 12" and a throat not less than 1" in
width. Place staples along outer edges and throughout the geotextile a maximum of 3 ft
horizontally and vertically Geotextile shall be placed to the bottom and across the entire width
of the basin according to the Infiltration Basin with Baffles detail
At the emergency spillway outlet, provide a smooth soil surface free from stones, clods, or debris
that will prevent contact of the coin fiber matting with the soil. Unroll the matting and apply
without stretching such that it will he smoothly but loosely on the soil surface Wooden stakes,
reinforcement bars, or staples may be used as anchors in accordance with the details in the plans
and as directed Place anchors across the matting at the ends approximately 1 ft apart Place
anchors along the outer edges and down the center of the matting 3 ft apart
Measurement and Payment
Silt Excavation will be measured and paid for in accordance with Article 1630 -4 of the Standard
Specifications, as calculated from the typical section throughout the length of the basin as shown
on the final approved plans
Geotextile for Soil Stabilization will be measured and paid for in accordance with Article 270 -4
of the Standard Specifications
Coir Fiber Baffles will be measured and paid for in accordance with Article 1640 -4 of the
Standard Specifications
Coir Fiber Mat will be measured and paid for as the actual number of square yards measured
along the surface of the ground over which coir fiber mat is installed and accepted
No measurement will be made for other items or for over excavation or stockpiling
Payment will be made under
Pay Item Pay Unit
Coir Fiber Mat Square Yard
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NORTH CAROLINA TEMPORARY SILT DITCH
DEPT OF TRANSPORTATION
DIVISION OF HIGHWAYS
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11 TEMPORARY ROCK SEDIMENT DAMS
12 1634 -1 DESCRIPTION
13 Construct maintain and remove devices placed in ditches diversions swales or drainage
14 turnouts to reduce water velocity and contain sediment
15 The actual conditions which occur during the construction of the project will determine the
16 quantity of temporary rock sediment dams constructed The quantity of rock sediment dams
17 may be increased decreased or eliminated entirely as directed Such variations in quantity
18 will not be considered as alterations in the details of construction or a change in the character
19 of the work
20 1634 -2 MATERIALS
21 Refer to Division 10
Item Section
Sediment Control Stone Standard Size No 5 or 57 1005
Stone for Erosion Control Class A or Class B 1042 -1
Coir Fiber Mat 1060 -14
22 1634 -3 CONSTRUCTION METHODS
23 Install coin fiber baffles on the upstream side of each type of dam in accordance with
24 Section 1640 and as directed
25 (A) Type A
26 Place structural stone in the channel ditch diversion swale or drainage turnouts with
27 2 1 side slope on the upstream side and 3 1 side slope on the downstream side Plate the
28 upstream side with sediment control stone approximately 12 thick Use a minimum
29 spacing of 15 ft and as directed for the coir fiber baffles
30 Provide a weir section approximately 2/3 of the channel width and with an 8 ft maximum
31 height from the bottom of the channel In the center of the device, place the weir section
32 approximately 12 lower than the sides of the device or the top of the channel whichever
33 is lower
34 (B) Type B
35 Place structural stone in the channel ditch diversion swale or drainage turnouts with
36 2 1 side slopes and plate the upstream side with sediment control stone approximately
37 12' thick
1 In the center of the device provide a weir section with a 4 ft mmimum width constructed
2 18" lower than the sides of the device or the top of the channel whichever is lower
3 Construct the temporary rock sediment dam Type B with a 5 ft mnnmum thickness
4 measured along the top of the dam structure
5 Use earthen backfill material to extend dam width and create a larger sediment storage
6 volume for the temporary rock sediment dam Type B where needed
7 1634 -4 MAINTENANCE AND REMOVAL
8 Maintain the temporary rock sediment dams remove and dispose of silt accumulations at the
9 sediment dams when so directed
10 Remove temporary rock sediment dams as the project nears completion or at such time as the
11 Engineer deems the device to be no longer useful The Engineer will direct the actual time of
12 removal Prepare seed bed seed and mulch the area in accordance with Section 1660
13 1634 -5 MEASUREMENT AND PAYMENT
14 Payment for temporary rock sediment dams will be made as follows
15 Coir Fiber Baffle with be measured and paid in accordance with Section 1640
16 Stone for Erosion Control Class will be measured and paid in accordance with
17 Section 1610
18 Sediment Control Stone will be measured and paid in accordance with Section 1610
19 Silt Excavation will be measured and paid in accordance with Section 1630
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Section 1605
DIVISION 16
EROSION CONTROL AND ROADSIDE DEVELOPMENT
1 SECTION 1605
2 TEMPORARY SILT FENCE
3 1605 -1 DESCRIPTION
4 Furnish material construct, maintain and remove temporary silt fence in locations shown in
5 the plans or in locations that require surface drainage to be filtered
6 1605 -2 MATERIALS
7 Refer to Division 10
Item Section
Geotextile Type 3 1056
8 (A) Posts
9 Provide steel posts with at least 5 ft long 13/8" wide measured parallel to the fence and
10 1 251b/ft in weight per length Equip with an anchor plate with an area of at least
11 14 0 sq in Ensure a means of retainmg fencing material in the desired position without
12 displacement
13 (B) Woven Wire Fence
14 Provide woven wire fence at least 32 high with 5 horizontal wires vertical wires spaced
15 12" apart, 10 gauge top and bottom wires and 12 1/2 gauge for all other wires
16 (C) Attachment Device
17 Provide No 9 staple with at least 1 1/2 length or other approved attachment device
18 1605 -3 CONSTRUCTION METHODS
19 Install in locations as shown in the plans or as directed
20 Install wire and geotextile as shown in Roadway Standard Drawings
21 Geotextile may be used without the woven wire fence backing under the following conditions
22 (A) The Engineer will approve the geotextile
23 (B) Incline post spacing toward the runoff source at an angle of not more than 20° from
24 vertical
25 (1) Attach geotextile to the post with wire or other acceptable methods
26 (2) Overlap geotextile at least 18" at splice joints
27 (3) Install geotextile that is free of defects rips holes flaws deterioration or damage
28 1605 -4 MAINTENANCE AND REMOVAL
29 Maintain the silt fence until the project is accepted or until the fence is removed Remove and
30 replace deteriorated or ineffective geotextile Remove and dispose of silt accumulations in
31 accordance with Section 1630 when necessary or as directed
32 Leave silt fence in place until site stabilization and remove at project completion Removed
33 silt fence becomes the property of the Contractor Dress and seed and mulch all areas where
34 silt fence is removed in accordance with Section 1660
NCDOT 2012 Standard Specifications 161
Section 1606
1605 -5 MEASUREMENT AND PAYMENT
2 Temporary Silt Fence will be measured and paid in linear feet accepted in place along the
3 ground line of the fence
Silt Excavation will be measured and paid in accordance with Section 1630
5 Seeding and Mulching will be measured and paid in accordance with Section 1660
6 Article 104 5 pertaining to revised contract prices will not apply to this item No revision in
7 the contract unit price will be allowed because of any ovemin or underrun
Payment will be made under
Pay Item Pay Unit
Temporary Silt Fence Linear Foot
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DEPT OF TRANSPORTATION
DIVISION OF HIGHWAYS
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-- WATTLE
Description
Wattles are tubular products consisting of excelsior fibers encased in synthetic netting
Wattles are used on slopes or channels to intercept runoff and act as a velocity break
Wattles are to be placed at locations shown on the plans or as directed Installation shall
follow the detail provided in the plans and as directed Work includes furnishing
materials installation of wattles matting installation, and removing wattles
Materials
Wattle shall meet the following specifications
100% Curled Wood(Excelsior) Fibers
Minimum Diameter
Minimum Density
Net Material
Net Openings
Net Configuration
Minimum Weight
12 in
2 5 lb/ft' +/- 10%
Synthetic
Iin xIin
Totally Encased
20 lb +/ 10% per 10 ft length
Anchors Stakes shall be used as anchors
Wooden Stakes
Provide hardwood stakes a minimum of 2 ft long with a 2 in x 2 in nominal
square cross section One end of the stake must be sharpened or beveled to
facilitate driving down into the underlying soil
Matting shall meet the requirements of section 1060 -8 of the Standard Specifications, or
shall meet specifications provided elsewhere in this contract
Provide staples made of 0 125 diameter new steel wire formed into a u shape not less
than 12 in length with a throat of 1 in width
Construction Methods
Wattles shall be secured to the soil by wire staples approximately every 1 linear foot and
at the end of each section of wattle A mmimum of 4 stakes shall be installed on the
downstream side of the wattle with a maximum spacing of 2 linear feet along the wattle,
and according to the detail Install a minimum of 2 stakes on the upstream side of the
wattle according to the detail provided in the plans Stakes shall be driven into the
ground a minimum of 10 in with no more than 2 in projecting from the top of the wattle
Drive stakes at an angle according to the detail provided in the plans
Only install wattle(s) to a height in ditch so flow will not wash around wattle and scour
ditch slopes and according to the detail provided in the plans and as directed Overlap
adjoining sections of wattles a minimum of 6 in
Installation of matting shall be in accordance with the detail provided in the plans and in
accordance with section 1631 3(B) of the Standard Specifications or in accordance with
specifications provided elsewhere in this contract
The Contractor shall maintain the wattles until the protect is accepted or until the wattles
are removed and shall remove and dispose of silt accumulations at the wattles when so
directed in accordance with the requirements of Section 1630 of the Standard
Specifications
Measurement and Payment
Wattle will be measured and paid for by the actual number of linear feet of wattles which
are installed and accepted Such price and payment will be full compensation for all
work covered by this section including but not limited to furnishing all materials labor,
equipment and incidentals necessary to mstall the Wattle
Matting will be measured and paid for in accordance with section 1631 4 of the Standard
Specifications or in accordance with specifications provided elsewhere in this contract
Payment will be made under
Pay Item Pay Unit
Wattle Linear Foot
WATTLES WITH POLYACRYLAMIDE (PAM)
Description
Wattles are tubular products consisting of excelsior fibers encased in synthetic netting
Wattles are used on slopes or channels to intercept runoff and act as a velocity break
Wattles are to be placed at locations shown on the plans or as directed Installation shall
follow the detail provided in the plans and as directed Work includes furnishing
materials, installation of wattles, matting installation, PAM application, and removing
wattles
Materials
Wattle shall meet the following specifications
100% Curled Wood
Minimum Diameter
Minimum Density
Net Material
Net Openings
Net Configuration
Minimum Weight
;Excelsior) Fibers
12 in
2 51bIW +/ 10%
Synthetic
lm xlm
Totally Encased
20 lb +/ 10% per 10 ft length
Anchors Stakes shall be used as anchors
Wooden Stakes
Provide hardwood stakes a minimum of 2 ft long with a 2 in x 2 in nominal
square cross section One end of the stake must be sharpened or beveled to
facilitate driving down into the underlying soil
Matting shall meet the requirements of section 1060 8 of the Standard Specifications, or
shall meet specifications provided elsewhere in this contract
Provide staples made of 0 125" diameter new steel wire formed into a u shape not less
than 12' in length with a throat of 1 " in width
Polyacrylamide (PAM) shall be applied in powder form and shall be anionic or neutrally
charged Soil samples shall be obtained in areas where the wattles will be placed, and
from offsite material used to construct the roadway, and analyzed for the appropriate
PAM flocculant to be utilized with each wattle The PAM producf used shall be listed on
the--,North Carolina Department of Environment and Natural Resources�(NCDENR)
Division of Water Quality,(DWQ) webs site w
Construction Methods
Wattles shall be secured to the soil by wire staples approximately every 1 linear foot and
at the end of each section of wattle A minimum of 4 stakes shall be installed on the
downstream side of the wattle with a maximum spacing of 2 linear feet along the wattle
and according to the detail Install a minimum of 2 stakes on the upstream side of the
wattle according to the detail provided in the plans Stakes shall be driven into the
ground a minimum of 10 in with no more than 2 in projecting from the top of the wattle
Drive stakes at an angle according to the detail provided in the plans
Only install wattle(s) to a height in ditch so flow will not wash around wattle and scour
ditch slopes and according to the detail provided in the plans and as directed Overlap
adjoining sections of wattles a minimum of 6 in
Installation of matting shall be in accordance with the detail provided in the plans and in
accordance with section 1631 3(B) of the Standard Specifications, or in accordance with
specifications provided elsewhere in this contract
Apply PAM over the lower center portion of the wattle where the water is going to flow
over at a rate of 2 ounces per wattle, and 1 ounce of PAM on matting on each side of the
wattle PAM applications shall be done during construction activities after every rainfall
event that is equal to or exceeds 0 50 in
The Contractor shall maintain the wattles until the project is accepted or until the wattles
are removed, and shall remove and dispose of silt accumulations at the wattles when so
directed in accordance with the requirements of Section 1630 of the Standard
Specifications
Measurement and Payment
Wattles will be measured and paid for by the actual number of linear feet of wattles
which are installed and accepted Such price and payment will be full compensation for
all work covered by this section including but not limited to furnishing all materials
labor, equipment and incidentals necessary to install the Wattles
Matting will be measured and paid for in accordance with section 1631 -4 of the Standard
Specifications or in accordance with specifications provided elsewhere in this contract
Polyacrylamide(PAM) will be measured and paid for by the actual weight in pounds of
PAM applied to the wattles Such price and payment will be full compensation for all
work covered by this section, including, but not limited to, furnishing all materials, labor,
equipment and incidentals necessary to apply the Polyacrylamide(PAM)
Payment will be made under
Pay Item Pay Unit
Polyacrylamide(PAM) Pound
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TEMPORARY ROCK SILT CHECK TYPE A WITH EXCELSIOR MATTING
AND POLYACRYLAMIDE (PAM)
Description
Temporary Rock Silt Checks Type A with Excelsior Matting and Polyacrylamide (PAM)
are devices utilized in temporary and permanent ditches to reduce runoff velocity and
incorporate PAM into the construction runoff to increase settling of sediment particles
and reduce turbidity of runoff Temporary Rock Silt Checks Type A with Excelsior
Matting and PAM are to be placed at locations shown on the plans or as directed
Installation shall follow the detail provided in the plans and as directed Work includes
furnishing materials installation of Temporary Rock Silt Checks Type A, matting
installation, PAM application, and removing Temporary Rock Silt Checks Type A with
Excelsior Matting and PAM
Materials
Structural stone shall be class B stone that meets the requirements of Section 1042 of the
Standard Specifications for Stone for Erosion Control Class B
Sediment control stone shall be #5 or #57 stone, which meets the requirements of Section
1005 of the Standard Specifications for these stone sizes
Matting shall meet the requirements of Excelsior Matting in section 1060 -8(B) of the
Standard Specifications or shall meet specifications provided elsewhere in this contract
Polyacrylamide (PAM) shall be applied in powder form and shall be anionic or neutrally
charged Soil samples shall be obtained in areas where the Temporary Rock Silt Checks
Type A with Excelsior Matting and PAM will be placed, and from offsite material used
to construct the roadway and analyzed for the appropriate PAM flocculant to be utilized
with each Temporary Rock Silt Check Type A The PAM product used shall be listed on
the North Carolina Department of Environment and Natural Resources (NCDENR)
Division of Water Quality (DWQ) web site as an approved PAM product for use in North
Carolina
Construction Methods
Temporary Rock Silt Checks Type A shall be installed in accordance with Section 1633
3(A) of the Standard Specifications Roadway Standard Drawing No 1633 01 and the
detail provided in the plans
Installation of matting shall be in accordance with the detail provided in the plans, and
anchored by placing Class B stone on top of the matting at the upper and lower ends
Apply PAM at a rate of 3 5 ounces over the center portion of the Temporary Rock Silt
- Checks Type A and matting where the water is going to flow over PAM applications
shall be done during construction activities and after every rainfall event that is equal to
or exceeds 0 50 in
The Contractor shall maintain the Temporary Rock Silt Checks Type A with Excelsior
Matting and PAM until the project is accepted or until the Temporary Rock Silt Checks
Type A with Excelsior Matting and PAM are removed and shall remove and dispose of
silt accumulations at the Temporary Rock Silt Checks Type A with Excelsior Matting
and PAM when so directed in accordance with the requirements of Section 1630 of the
Standard Specifications
Measurement and Payment
Temporary Rock Silt Checks Type A will be measured and paid for in accordance with
section 1633 5 of the Standard Specifications or in accordance with specifications
provided elsewhere in this contract
Matting will be measured and paid for in accordance with section 1631 4 of the Standard
Specifications or in accordance with specifications provided elsewhere in this contract
Polyacrylamide(PAM will be measured and paid for by the actual weight in pounds of
PAM applied to the Temporary Rock Silt Checks Type A Such price and payment will
be full compensation for all work covered by this section including, but not limited to
furnishing all materials labor equipment and incidentals necessary to apply the
Polyacrylamide(PAM
Payment will be made under
Pay Item Pay Unit
Polyacrylamide(PAM) Pound
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STATE OF
NORTH CAROLINA
DEPT OF TRANSPORTATION
DIVISION OF HIGHWAYS
RALEIGH, N C
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STEP 1 Input Project Information items to red are REQUIRED
f%Qn Sh esof I
SECTION 1 of 1
Construction time
County
Aloonder
< 6 months (YIN)? Y
HOW (YIN)? N
Elevation
Location
Trout (YIN)? N
Tool ft
Pre`ared B11�3.
From Sta
1 3 + 00
Date—Prepared -
9MMM
to Sta
0 + 00
Level 111 A #
Right/Left Rt
No Elev Data
/
Level Ill A Ex irati
on v _
Y Ditch Grade 7 000
/
Reviewed B
Contributing
Date Reviewed
RNII Width 30
feet
Level III A #
Length of Run X 300
feet
Level III A Expiration
Disturbed Area = 0 21
acres
Drainage Area 1 27
acres
Drainage Area must equal or exceed the Disturbed Area found above
Surface Dewatering Device
Y
r Surface Dewatering Device must be utilized Answer Y
Is this a Typical Section (YIN)?
Y
Will RUSLE2 be used to model
the Non Typical sections?
N
oRt
Regression Constant, C 659 Table 2 7 (Level 111 Ref Manual)
Rainfall Factor R 160 Figure 2 1
Erodibility Factor K 024 Table 2 2 or Web Soil Survey (http Asoildatamart nres usda gow)
Soil Type Pacolet Rion informational purposes only
STEP 2 Ditch Liner requirements Utilize the Required Uner tab and note recommendations on plans.
STEP 3 Velocity Control Requirements
TYPE ROCK SILT CHECKS 6 spacedat ®feet Choose between Type a Rock Silt
Checks or Wattles
OR WATTLES
See the HELP Tab for additional clarification and an example on how to place on plans
Start with Option 5
OPTION 4 Using RUSLE2 Analysis to determine required storage
OPTION 4A For DRAINAGE AREA < 3 Acre Use V =CRKs to determine storage
Regression Constant C 659
Rainfall Factor R 160
Erodibility Factor K 024 From Step 1 above
Soil Type Pacolet Rion
Ddchlme Slope s 0 07000 tuft
V= 145254 ft /ac/yr
Required Storage Volume= 300 11 ft3 See Option 5
OPTION 4B For DRAINAGE AREA < 3 Acre Use RUSLE2 Modeling to determine storage
Sediment Delivery from RUSLE2 0 00 tons/acre/yr
Converting to R3/ac4r NIA ft /aclyr
Required Storage Volume= NIA fe See Option 5
OPTION 4C Using the Required Storage Volume from Option 4A or 48 to determine # of Wrapped TRSC- A/Watdes Required
These devices can be used to satisfy the velocity requirements in Step 3
Storage from Wrapped Type A Rock Silt Checks or Wattles Option of using Wrapped Type A Rock Silt
Enter Ditch Front Slope Gradient (H V) 2 1 Checks or Wattl s
Enter Ditch Back Slope Gradient (H t7 is 1
Enter Device Height 15 ft
Area Behind Device 3 94 e
Length of Ditch Behind Device 2143 ft 3 See Option 5
Storage Behind Device (assumes 651 effeclency) 18 28 ft
Wrapped TRSC- A/Watdes required X Go to Option 5,
Total NIA ft
COMMENTS Designer still has the opt on of usinq Opt on 5 or t
.2n A I bra �-, o r
uS�
30 day (3)0 f io n A&.5 1 Y1
4 Rt
OPTION 6 Alternative Designs
IMPORTANT Before using Option 6 be sure that the information in Step 1 is accurate!
There may be cases where the RUSLE2 Analysis (Option 4) yields an excessive number of devices to achieve
storage requirements and site constraints disallow infiltration and skimmer basin (option 5) installation
Therefore it will be necessary to utilize the option below that best fits your situation The 60 Day Option
Is not available for projects Involving HQW or Trout Waters
'"The minimum basin size for a skimmer to function property is 20 x10 If the basin dimensions are
less than this size an infiltration basin must be utilized regardless of dewatering fame
30 DAY OPTION
Under these circumstances it vmill be necessary to provide a minimum of 23 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 30 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which indicates that for any given 30 day period in NC the maximum amount of
Rainfall Energy that can be expected is 23 / of the annual total
In this situation
23 / of RUSLE2 Required Volume
Design Depth (ft)
Proposed Basin Side Slopes
1-MO-46.. A..h —in
8418 ft3
z �
1 5 1 side slopes
Web Sod Survey (http, //soildatamart nres u gov
o m /sec 110 Use Infiltration or
154 Skimmer Basin
06
--- --- - - - - -- - - - -- - -
Sat Hydraulic Con Ksat, micr
Soil Permeability in/hr
Soil Permeability in/hr
Dewatenn Time (Days)
Dewatenn Time (Days)
N/A
Basin Design
Basin Design
Mmrmum 2 1(L
149 Ratio
Suggested Top Width ft
Suggested Top Length (ft)
5
Suggested Top Len (ft)
0
10
Final Design To Len ft
Final Design Top Width ft
7
3
Final Design Top Len ft
Weir Width ft
14
Final Design De ft
15
2
Orifice Diameter in
Weir Width ft
4
0
Skimmer Sae (in)
V city storage (et')
15
Onfice Diameter in
025
Dewatenn Time (Days)
2
V iify Storage (fe)
94 00
OK
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
Wattles are required for Trout or HQW waters
60 DAY OPTION
Under the circumstances d will be necessary to provide a minimum of 43 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 60 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which indicates that for any given 60 day period in NC the maximum amount of
Rainfall Energy that can be expected is 43 / of the annual total
In this situation
43 A of RUSLE2 Required Volume
Design Depth (ft)
Proposed Basin Side Slopes
A—e.eie
15738 fY°
3
1 5 1 side slopes
Web Soil Survey http / /soddatamart nres usda gov/)
m /sec 0 0 Skimmer Basin
0 00 Required
Sat Hydraulic Can (Ksat micro
Soil Permeability in/hr
Dewatenn Time (Days)
N/A
Basin Design
Minimum 2 f (L W Ratio
Suggested To Width ft
6
Suggested Top Length (ft)
12
Final —Design To Width ft
0
Final Design To Len ft
0
Final Design De ft
3
Weir Width ft
4
Skimmer Size (in)
15
Orifice Diameter in
025
Dewatenng Time (Days)
0
V city storage (et')
000
Too Low
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
) N- to pn the EC-lrlan whether the 30�q-r to lay e't/en is userAl M
GENERAL NOTES
If the project involves HQW or Trout Waters wattles in conjunction with PAM (polyacrylamide) must be installed according
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Printed Jan 11, 2012
STEP 1 Input Project Information items in red are REQUIRED
Construction time
Alexander
< 6 months (Y /N)?
Y
HQW (YIN)?
N Elevation
Trout (YIN)?
N Tool ft 1
From Sto 3 +
00
to Ste 0 +
00 s
Right/Left
Lt No Elev Data /
/ Ditch Grade
7 000 /
Contributing
Date Reviewed
RIW Width
30 feet
Length of Run X
300 feet
(0 Z-7
SECTION 1 of 1
County
Alexander
1W
1
s
'EROsion DESign
Location
2 1
Prepared By
&IRUM 3.
Date`Pre aced
1 5 1
Level III A#
a
_
e
0
_
Level III A Ex [ration
Reviewed B
Area Behind Device
Date Reviewed
Level III A#
Length of Ditch Behind Device
2143 ft
Level III A Expiration
Disturbed Area = 021 acres
Drainage Area 03 acres
Drainage Area must equal or exceed the Disturbed Area found above
Surface Dewatering Device N
Is this a Typical Section (YIN)? Y
Will RUSLE2 be used to model
the Non Typical sections? N
Regression Constant, C 659 Table 2 7 (Level llf Ref Manual)
Rainfall Factor R 160 Figure 2 1
Erodibility Factor K 024 Table 2 2 or Web Soil Survey (http Asoddatamart nres usda govl)
Soil Type Pacolet Rion informational purposes only
STEP 2 Ditch Liner requirements Utilize the Required Liner tab and note recommendations on plans
STEP 3 Velocity Control Requirements
TYPE ROCK SILT CHECKS 6 spaced at 43 feet Choose between Type Rock Silt
Checks or Wattll es
OR WATTLES
See the HELP Tab for additional clarification and an example on how to place on plans
Start with Option 4A
OPTION 4 Using RUSLE2 Analysis to determine required storage
OPTION 4A For DRAINAGE AREA < 3 Acre Use V =CRKs to determine storage
Regression Constant C 659
Rainfall Factor R 160
Erodibility Factor K 024 From Step I above
Soil Type Pacolet Rion
Ditchline Slope s 0 07000 Wit
V= 146264 ft /aclyr
Required Storage Volume= 300 11 ft' Using 82 / of Rainfall Factor see note in cell
C4 Move on to Option 4C
OPTION 4B For DRAINAGE AREA < 3 Acre Use RUSLE2 Modeling to determine storage
Sediment Delivery from RUSLE2 0 00 tons /acre/yr
Converting to It'/acyr NIA ft /ac/yr
Required Storage Volume= NIA ft3 See Option 4A
OPTION 4C Using the Required Storage Volume from Option 4A or 4B to determine # of Wrapped TRSGA/WaXes Required
These devices can be used to satisfy the velocity requirements in Step 3
Storage from Wrapped Type A Rock Sift Checks or Wattles
Option of using Wrapped Type A Rock Silt
1
Enter Ditch Front Slope Gradient (H 19
2 1
Checks or lhattles
Enter Ditch Back Slope Gradient (H V)
1 5 1
Enter Device Height
1 5 it
Area Behind Device
3 94 f?
Length of Ditch Behind Device
2143 ft
Excessive number of devices required Go to
Storage Behind Device (assumes 65'/ effec /ency)
18 28 ft3
Option 5
Wrapped TRSC- ANYatdes required X
17 0
Total 31078
ft
COMMENTS
Designer still has the option of using Option 5 or 6
7 (18 ) wattles will be used for storage = (112 cu ft ) and a 10 x20 x3 TRSD B = ( 276 cu it ) will also be used to meet the
total required storage Total storage =( 389 cu ft )
PAM will be applied on the last wattle before the TRSD B
Plan 5 ee {' / Q l91-
STEP 1 Input Project Information items in red are REQUIRED
SECTION 1 of 1
Construction time
659
County
Alexander
Erodibility Factor K
024
< 6 months (YIN)? Y
Sod Type
Pacolet Rion
Ddchline Slope s
_
HOW (YIN)? N
Elevation
V= 62262 ft ° /actyr
Location
Trout (YIN)? N
Tool ft
Pre red{By
Quci _
From Sta
3 + 00
Date` Pre red
to Sta
6 + 00
Level 111 A ## --
Right/Left. Rt
No Elev Data
/
Level III A Ex iratlon — _ �R
/ Ditch Grade 3 000
/
Reviewed B
Contributing
Date Reviewed
WIN Width 30
feet
Level III A #
Length of Run X 300
feet
Level III A Expiration
Disturbed Area = 021
acres
Drainage Area 1 3
acres
Drainage Area must equal or exceed the Disturbed Area found above
Surface Dewatering Device
Y
r Surface Dewatering Device must be utilized Answer Y
Is this a Typical Section (YIN)?
Y
Will RUSLE2 be used to model
the Non Typical sections?
N
Regression Constant, C 659 Table 2 7 (Level N Ref Manual)
Rainfall Factor R 160 Figure 2 1
Erodibildy Factor K 024 Table 2 2 or Web Soil Survey (http / /soddatamart nres usda gow)
Sod Type Pacolet Rion informational purposes only
STEP 2 Ditch Liner requirements Utilize the Required Liner tab and note recommendations on.plans
STEP 3 Velocity Control Requirements
Choose between Type Rock Silt
TYPE B ROCKSILT CHECKS 2 spacedat 100 feet
Checks or Wattles
OR WATTLES
See the HELP Tab for additional clarification and an example on how to place on plans
Start with Option 5
OPTION 4 Using RUSLE2 Analysis to determine required storage
OPTION 4A For DRAINAGE AREA < 3 Acre Use V =CRKs to determine storage
Regression Constant C
659
Rainfall Factor R
160
Erodibility Factor K
024
From Step 1 above
Sod Type
Pacolet Rion
Ddchline Slope s
0 03000 ft/ft
V= 62262 ft ° /actyr
Required Storage Volume= 128 62 ft3 See Option 5
OPTION 4B For DRAINAGE AREA < 3 Acre Use RUSLE2 Modeling to determine storage
Sediment Delivery from RUSLE2 0 00 tonslacretyr
Converting to ft3/aor NIA ft /ac/yr
Required Storage Volume= NIA ft3 See Option 5
OPTION 4C Using the Required Storage Volume from Option 4A or 4B to determine # of Wrapped TRSC- A/WaMes Required
These devices can be used to satisfy the velocity requirements in Step 3
Storage from Wrapped Tyne A Rock Silt Checks or Wattles Option of using Wrapped type A Rock Silt
Enter Ditch Front Slope Gradient (H V9 2 1 I Checks or Wattles
Enter Ditch Back Slope Gradient (H %0 15 1
Enter Device Height 1 5 ft
Area Behind Device 3 94 fe
Length of Ditch Behind Device 50 00 ft See Option 5
Storage Behind Device (assumes 6510 effeciency) 42 66 ft3
Wrapped TRSGA/Watt /es required X Go to Option 5
Total NIA ft
MENTS Designer still has the option of us ng Option 5 or 6
60 Day Option
Infiltration Basin
OPTION 6 Alternative Designs
IMPORTANT Before using Option 6 be sure that the information in Step 1 is accurate!
There may be cases where the RUSLE2 Analysis (Option 4) yields an excessive number of devices to achieve
storage requirements and site constraints disallow infiltration and skimmer basin (option 5) installation
Therefore it will be necessary to utilize the option below that best fits your situation The 60 Day Option
Is not available for projects involving HOW or Trout Waters
—The minimum basin size for a skimmer to function property is 20 x10 If the basin dimensions are
less than this size an infiltration basin must be utilized regardless of dewatering time
30 DAY OPTION —
Under these circumstances it will be necessary to provide a minimum of 23 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 30 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which indicates that for any given 3D day period in NC the maximum amount of
Rainfall Energy that can be expected is 23 / of the annual total
In this situation
23 / of RUSLE2 Required Volume
Design Depth (ft)
Proposed Basin Side Slopes
Infiltrahnn Analvnis
3 3608- ft
1 5 1 side slopes
Web Sod Survey (h / /soddatamart.nres usda gov/)
m /sec 0 D Skimmer Basm
0 00 Required
N/A
Sat Hydraulic Con (Ksat micro
Soil Permeability in/hr
Dewatenn Time (Days)
Basin Design
Minimum 2 1(L Ratio
IM" ested To Width ft
3
Suggested Top Length (ft)
6
Final Design To Width ft
5
_
Final Design To Len ft
10
Final Design De it
T 3
Weir Width ft -
4
Skimmer Size (in)
15
Onfice Diameter m
025
Dewaterin Time (Days)
1
Verity Storage (tr')
52 50
OK
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
Wattles are required for Trout or HQW waters
60 DAY OPTION=
Under these circumstances it will be necessary to provide a minimum of 43 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 60 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which indicates that for any given 60 day period in NC the maximum amount of
Rainfall Energy that can be expected is 43 / of the annual total
In this situation
43 / of RUSLE2 Required Volume
Design Depth (ft)
Proposed Basin Side Slopes
Inrilhr=hnn Anah —,.
6745 ft3
3 •
1 5 1 side slopes
Web Soil Survey (http / /soildatamart nrcs usda gov
O miSeC 13 0 " Use Infiitiation or
1 82 Skimmer Bas .
08
Sat Hydraulic Con Ksat mitt
Soil Permeability in /hr
Dewaterin Time (Days)
Basin Design
Minimum 2 1(L K9 Ratio
Suggested To Width ft
4
Suggested Top Length (ft)
8
Final Design To Width ft
9
Final Design To7p Len ft
18
Final Desi n De ft
3
Weir Width ft
4
Skimmer Size (in)
15
Orifice Diameter m
025
Dewaterin Time (Days)
4
verify Stora In')
- 20250,
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
Nicen fhcEGrlan whefh_e °1fhe�30 �r fiUa�ay e�i+en is used. i
GENERAL NOTES
If the project involves HQW or Trout Waters wattles in conjunction with PAM (polyacrylamide) must be installed according
r�
59 in
ft
73iIH
03=
I5
755
,I 1
for
�a
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i
1 {
€
I
t
�li Iti
1
v
m
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c
n
4
N
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Spa 3 foo - 6+00
r
4
c
I
u
STEP 1 Input Project Information items in red are REQUIRED
Construction time
Alexander
< 6 months (YIN)?
Y
HQW (YIN)?
N
Elevation
Level III A#
Level III AiEx nation
Trout (YIN)?
N
Tool tt
Date Reviewed
From Sta
6 +
00
Level III A Expiration M
to Sta
7 +
50
Right/Left.
Rt
No Elev Data
/
/ Ditch Grade
3 000 /a
Contributing
RIW Width
30 feet
Length of Run X
150 feet
pica n S � ec f /
SECTION 1 of 1
County
Alexander
. .
e e
Location
Prepared B
G�9Rrri=t �s
Date Pre aced
Level III A#
Level III AiEx nation
From Step 1 above
Reviewed B
Pacolet Rion
Date Reviewed
Ditchline Slope s
Level III A #
Level III A Expiration M
Disturbed Area = 0 10 acres
Drainage Area 1 1 acres
Drainage Area must equal or exceed the Disturbed Area found above
Surface Dewatenng Device Y I Surface Dewatering Device must be utilized Answer Y
Is this a Typical Section (YIN)? Y
Will RUSLE2 be used to model
the Non Typical sections? N
Regression Constant, C 659 Table 2 7 (Level 1/1 Ref Manual)
Rainfall Factor R 160 Figure 2 1
Erodibildy Factor K 024 Table 2 2 or Web Soil Survey (hitp.//soddatamart firs usda govl)
Soil Type Pacolet Rion informational purposes only
STEP 2 Ditch Liner requirements Utilize the Required Liner tab and note recommendations on plans.
STEP 3 Velocity Control Requirements
Choose between Type B Rock Silt
TYPE B ROCK SILT CHECKS spaced at 75 feet Checks or Wattles
OR WATTLES
See the HELP Tab for additional clarification and an example on how to place on plans
Start with Option 5
OPTION 4 Using RUSLE2 Analysis to determine required storage
OPTION 4A For DRAINAGE AREA < 3 Acre Use V=CRKs to determine storage
Regression Constant C
659
Rainfall Factor R
160
Erodibility, Factor K
024
From Step 1 above
Sod Type
Pacolet Rion
Ditchline Slope s
0 03000 ft/ft
V= 62252 ft °Iac/yr
Required Storage Volume= 64 31 ft3 See Option 5
OPTION 48 For DRAINAGE AREA < 3 Acre Use RUSLE2 Modeling to determine storage
Sediment Delivery from RUSLE2 0 00 tons /acre/yr
Converting to tt3/ac/yr NIA ft /ac/yr
Required Storage Volume= F N/A ft3 See Option 5
OPTION 4C Using the Required Storage Volume from Option 4A or 4B to determine # of Wrapped TRSC -A/WaW Required
These devices can be used to satisfy the velocity requirements in Step 3
Storage from Wrapped Type A Rock Sift Checks or Wattles Option of using Wrapped Type A Rock Silt
Enter Ditch Front Slope Gradient (H V) 2 1 Checks or Wattles
Enter Ditch Back Slope Gradient (H V) 15 1
Enter Device Height 1 5 ft
Area Behind Device 3 94 fe
Length of Ditch Behind Device 5000 ft 3 See Option 5
Storage Behind Device (assumes 65•/ effeciency) 42 66ff ft l
Wrapped TRSGA/Wattles required X Go to Option 5)
Total N/A ft
nr.....eurc Desioner still has the option of usinq Option 5 or 6
USE The 60 Day opbi
USE Infiltration Basin
T 8t
OPTION 6 Altematfve Designs
IMPORTANT Before using Opbon 6 be sure that the information in Stop 1 is accurate)
There may be cases where the RUSLE2 Analysis (Option 4) yields an excessive number of devices to achieve
storage requirements and site constraints disallow infiltration and skimmer basin (option 5) installation
Therefore it will be necessary to utilize the option below that best fits your situation The 60 Day Option
is not available for projects involving HOW or Trout Waters
'"The minimum basin size for a skimmer to function properly is 20 x10 If the basin dimensions are
less than this size an Infiltration basin must be utilized regardless of dewatenng time
30 DAYJOPTION
Under these circumstances it will be necessary to provide a minimum of 23 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 30 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which indicates that for any given 30 day period in NC the maximum amount of
Rainfall Energy that can be expected is 23 / of the annual total
In this situation
23/ of RUSLE2 Required Volume
Design Depth (ft)
Proposed Basin Side Slopes
Infitratinn Analysis
18 04 fC�
3 �
1 5 1 side slopes
Web Soil Survey htt /lsolldatamart nres usda goy
m /sec 0 0 Skimmei Basin
0 00 Required
NIA
Sat Hydraulic Con (Ksat micro
Soil Permeabil in/hr
Dewaterin Time (Days)
Basin Design
Minimum 2 1(L
No Ratio
Su ested To Width ft
2
Suggested Top Length (ft)
Suggested Top Length (ft)
4
Final Design To Width ft
Final Design To Width ft
5
Final Design To Len ft
Final Design To Len ft
10
Final Design De ft
Final Design De ft
3
Weir Width ft
Weir Width ft
4
Skimmer Size (in)
Skimmer Sae (in)
Is
Onfice Diameter In
Onfice Diameter in
025
Dewatenng Time (Days)
Dewatenn Time (Days)
1
V my St rage in'►
v rift' storage Ift'j
52 50
OK
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
Wattles are required for Trout or HQW waters
60 DAY OPTION
Under these circumstances it will be necessary to provide a minimum of 43 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized wrthin 60 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which indicates that for any given 60 day penod in NC the maximum amount of
Rainfall Energy that can be expected is 43 / of the annual total
In this situation
43/ of RUSLE2 Required Volume
Design Depth (ft)
Proposed Basin Side Slopes
Infiltration Analvam
33 72 ftj
3 �
0 1 side slopes
Web Soil Survey h / /soiidatamartnres usda goy
misec 11 0 Use Infiltration or
1� Skimmer Basm
10
Sat Hydraulic Con Ksat micro
Soil Permeability in/hr
Dewaterin Time (Days)
Basin Design
Minimum 2 1(L K9 Ratio
Suggested To Width ft
3
Suggested Top Length (ft)
6
Final Design To Width ft
9
Final Design To Len ft
18
Final Design De ft
3
Weir Width ft
4
Skimmer Size (in)
Is
Onfice Diameter In
025
Dewatenng Time (Days)
10
V my St rage in'►
860
OK
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
'Nate ion the EC Nan whether the 30 or 60 Oy option is. usesf.
GENERAL NOTES
If the project Involves HQW or Trout Waters wattles in conjunction with PAM (polyacrylamide) must be Installed according
0 Rt
Printed Jan 12, 2012
STEP 1 Input Protect Information items in red are REQUIRED
Construction time
Alexander
< 6 months (YIN)?
Y
HQW (YIN)?
N
Elevation
Level ll A # � I
Trout (YIN)?
N
Tool ft
Reviewed B
From Sta
7 +
50
Level III A #
to Ste
10 +
00
Right/left
Rt
No Elev Data
/
/ Ditch Grade
5 000 /a
Contributing
RM Width
30 feet
Length of Run X
250 feet
Pia n SA &t- t / (' RQ
SECTION 1 of 1
County
Alexander
•
Location
Pre ared By
Date' Pre led
LlYM`ifiOM - _
Level ll A # � I
_ •
Level III Ab"4 iratlon -IMPWM
Reviewed B
Date Reviewed
Level III A #
Level 111 A Expiration
Disturbed Area = 017 acres
Drainage Area 2 17 acres
Drainage Area must equal or exceed the Disturbed Area found above
Surface Dewatering Device Y Surface Dewatering Device must be utilized Answer Y
Is this a Typical Section (YIN)? Y
Will RUSLE2 be used to model
the Non Typical sections? N
Regression Constant, C 659 Table 2 7 (Level Ill Ref Manual)
Rainfall Factor R 160 Figure 2 1
Erodibildy Factor K 024 Table 2 2 or Web Soil Survey (httpJ/sciddatamart nres usda govl)
Soil Type Pacolet Rion informational purposes only
STEP 2 Ditch Liner requirements Utilize the Required Liner tab and note recommendations on plans-
STEP 3 Velocity Control Requirements
Choose between Type B Rock Solt
TYPE B ROCK SILT CHECKS spaced at 50 feet Checks or Wattles
OR WATTLES
See the HELP Tab for additional clanfication and an example on how to place on plans
Start with Option 5
OPTION 4 Using RUSLE2 Analysis to determine required storage
OPTION 4A For DRAINAGE AREA < 3 Acre Use 1FCRKs to determine storage
Regression Constant C 659
Rainfall Factor R 160
Erodibility Factor K 024 From Step 1 above
Sod Type Pacolet Rion
Ddchlme Slope s 0 05000 Rift
V= 103753 W /ac/yr
Required Storage Volume 176 64 1`0 See Option 5
OPTION 4B For DRAINAGE AREA < 3 Acre Use RUSLE2 Modeling to determine storage
Sediment Delivery from RUSLE2 0 00 tonslacre/yr
Converting to ft3/aclyr NIA ft /aclyr
Required Storage Volume= NIA ft See Option 5
OPTION 4C Using the Required Storage Volume from Option 4A or 4B to determine # of Wrapped TRSGA/Wattles Required
These devices can be used to satisfy the velocity requirements in Step 3
Storage from Wrapped Type A Rock Silt Checks or Wattles Option of using Wrapped Type A Rock Silt
Enter Ditch Front Slope Gradient (H V) ? 1 1 Checks or Wattles
Enter Ditch Back Slope Gradient (H V) 15 1
Enter Device Height 15 ft
Area Behind Device 3 94 fe
Length of Ditch Behind Device 30 00 ft See Op
lion 5
Storage Behind Device (assumes 65•/ effectency) F- 25 59 ft3
Wrapped TRSC- A/Wattles required X L - Go to-Option 5�
Total N/A It
COMMENTS Designer st if has the opt on of using Option 5 or 1
USE The 60 Day Option
USE Infiltration Basin
oR�
OPTION 6 Alternative Designs
IMPORTANT Before using Option 6 be sure that the information In Stop 1 is accurate=
There may be cases where the RUSLE2 Analysis (Option 4) yields an excessive number of devices to achieve
storage requirements and site constraints disallow infiltration and skimmer basin (option 5) installation
Therefore it will be necessary to utilize the option below that best fits your situation The 60 Day Option
Is not available for projects Involving HOW or Trout Waters
"The minimum basin size for a skimmer to function property is 20 x10 If the basin dimensions are
less than this size an Infiltration basin must be utilized regardless of dewatenng time
30 DAY OPTION_
Under these circumstances it will be necessary to provide a minimum of 23 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 30 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which indicates that for any given 30 day period in NC the maximum amount of
Rainfall Energy that can be expected is 23 / of the annual total
In this situation
230/ of RUSLE2 Required Volume
Design Depth (ft)
Proposed Basin Side Slopes
1..614 -0— An.1 -1.
5011 ft'
3
1 5 1 side slopes
Web Soil Survey (http / /soildatamart nres usda ovi)
misec 0 0 Skimmer Bas,
0 00 Required
WA
Sat' Hydraulic Cori (K at, micro
Sod Permeabil in/hr
Dewaterin Time (Days)
Basin Design
Minimum 2 1(L
lA� Ratio
Suggested To Width ft
3
Suggested Top Length (ft)
Suggested Top Length (ft)
6
Final Design To Width ft
Final Design To Width ft
5
Final Desi n To Len ft
Final Design To Len ft
10
Final Design De ft
Final Design De ft
3
Weir Width ft
Weir Width ft
4
Skimmer Size (in)
Skimmer Size (in)
is
Orifice Diameter m
Onfice Diameter in
025
Dewatenng Time (Days)
Dewaterin Time (Days)
1
Verify storage (n')
V rify St rage (ft')
5250
OK
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
Wattles are required for Trout or HQW waters
60 DAY OPTION
Under these circumstances it will be necessary to provide a minimum of 43 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 60 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which indicates that for any given 60 day period in NC the maximum amount of
Rainfall Energy that can be expected is 43 / of the annual total
In this situation
43/ of RUSLE2 Required Volume
Design Depth (ft)
Proposed Basin Side Slopes
93 68 ft'
3
1 5 1 side slopes
Web Soil Survey (htfp / /soildatamart.nres usda govo
misec 11 2 Use Infiitrahon or
1 56 Skimmer Basin
10
Sat Hydraulic Con Ksat micro
Soil Permeability in /hr
Dewatenn Time (Days)
Basin Design
Minimum 2 1(L lAq Ratio
Suggested To Width ft
4
Suggested Top Length (ft)
8
Final Design To Width ft
9
Final Desi n To Len ft
18
Final Design De ft
3
Weir Width ft
4
Skimmer Size (in)
is
Orifice Diameter m
023
Dewatenng Time (Days)
4
Verify storage (n')
20250
OK
D
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
�!Vite n theTEC Flan whefhelihe�30 er i0jitay �'tiiniis us_ed�I
GENERAL NOTES
if the project involves HQW or Trout Waters wattles in conjunction with PAM (polyacrylamide) must be installed according
d
F v If 1
1 y
R�� '�c✓^k&x s��4 '�.: ` 'ax,- a'x yl .zlry �i��"!`, _,�;,
t � ,�_ I bra• .�,a �!'' •� y� r3 I�- �+..�;.� -� " } �, � '�vf j�'� '�'� `'�� 4�'Y�
el
`vim � i ,''�•+,
�,r, ,pia '�Y�3. �h i � �_� { • � iL �,. t�''- �'� �" � ` g 4°�'�.r = h, .�.a* - _ _
... _ . .fro.. t-,� •.. ..'�. '•. - -. .= ..•.
1
r
STEP 1 Input Project Information items in red are REQUIRED
Construction time
Alexander L.J"ERODES
l b` iMMK3 —
< 6 months (YIN)?
Y
Level III A #.._
HQW (YIN)?
N
_
Elevation
Trout (YIN)?
N
Tool ft
From Sta
F 10 +
00
to Sta
F 12 +
00
Right/Left
Rt
No Elev Data /
/ Ditch Grade
4 000
Ao
Contributing
RIW Width
30
feet
Length of Run X
200
feet
Disturbed Area =
014
acres
Plan Shoo a
SECTION 1 of 1
ORf-
County
Location
Pre i red By
Alexander L.J"ERODES
l b` iMMK3 —
DaffPr'e area
UTTIHIM -
Level III A #.._
_
e
Level III A Ex i6t-lon -__ _ _
Reviewed B
Date Reviewed i
Level III A#
Level III A Expiration
Drainage Area 1 1 acres
Drainage Area must equal or exceed the Disturbed Area found above
Surface Dewatenng Device Y Surface Dewatenng Device must be utilized Answer Y
Is this a Typical Section (YIN)? Y
Will RUSLE2 be used to model
the Non Typical sections? N
Regression Constant, C 659 Table 2 7 (level ill Ref Manual)
Rainfall Factor R 160 Figure 2 1
Erodibility Factor K 024 Table 2 2 or Web Soil Survey (http//soi/datamart nrcs usda gow)
Soil Type Pacolet Rion informational purposes only
STEP 2 Ditch Liner requirements Utilize the Required Liner tab and note recommendations on plans
STEP 3 Velocity Control Requirements
Choose between Type B Rock Silt
TYPE B ROCK SILT CHECKS spaced at 67 feet Checks or Wattles
OR WATTLES
See the HELP Tab for additional clarification and an example on how to place on plans
Start with Option 5
OPTION 4 Using RUSLE2 Analysis to determine required storage
OPTION 4A For DRAINAGE AREA < 3 Acre Use IF -CRKs to determine storage
Regression Constant C 659
Rainfall Factor R 160
Erodibility Factor K 024 From Step 1 above
Soil Type Pacolet Rion
Ditchline Slope s 0 04000 tuft
V= 83002 It /ac/yr
Required Storage Volume= F 11433 fe See Option 5
OPTION 48 For DRAINAGE AREA < 3 Acre Use RUSLE2 Modeling to determine storage
Sediment Delivery from RUSLE2 0 00 tons/acrelyr
Converting to Olac/yr WA ft° /acryr
Required Storage Volume= ---NIA fe See Option 5
OPTION 4C Using the Required Storage Volume from Option 4A or 4B to determine # of Wrapped TRSC- A/Watf/es Required
These devices can be used to satisfy the velocity requirements in Step 3
Storage from Wrapped Type A Rock Silt Checks or Wattles Option of using Wrapp d Type A Rock Silt
Enter Ditch Front Slope Gradient (H V) 2 1 I Checks or Wattles
Enter Ditch Back Slope Gradient (H io 15 1
Enter Device Height 1 5 ft
Area Behind Device 394 If
Length of Ditch Behind Device 37 50 ft See Option 5
Storage Behind Device (assumes 651 effeclency) � 31 99 ft
Wrapped TRSC- AANatties required X{ Go to Option 5
Total NIA ft°
COMMENTS Designer still has the option of using I
USE 60 Day Option
USE Infiltration Basin
)phon 5 or 6
OPTION 6 Aflemative Designs
IMPORTANT Before using Option 6 be sure that the information In Step 1 is accurate)
There may be cases where the RUSLE2 Analysis (Option 4) yields an excessive number of devices to achieve
storage requirements and site constraints disallow infiltration and skimmer basin (option 5) installation
Therefore it will be necessary to utilize the option below that best fits your situation The 60 Day Option
is not available for projects involving HOW or Trout Waters
—The minimum basin size for a skimmer to function properly Is 20 x10 If the basin dimensions are
less than this size an infiltration basin must be utilized regardless of dewatering time
30DAY(OP,TIONj�
Under these circumstances it will be necessary to provide a minimum of 23 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 30 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which indicates that for any given 30 day period In NC the maximum amount of
Rainfall Energy that can be expected is 23 / of the annual total
In this situation
23 / of RUSLE2 Required Volume
Design Depth (ft)
Proposed Basin Side Slopes
Infiltr hnn Analvcie
32 07 ft? F
1 5 1 side slopes
Web Sod Survey h ! /soddatamart nres usda gov
m /sec 0 0 Skimmer Basm
0 00 Required
NIA
Sat Hydraulic Con (Ksat micro
Soil Permeability m /hr
Dewatenn Time (Days)
Basin Design
Minimum 2 1(L K Ratio
Suggested To Width ft
3
Suggested To Length (ft)
6
Final Design To Width ft
5
Final Design To Len ft
10
Final Design De ft
3
Weir Width ft
4
Skimmer Size (in)
Is
Orifice Diameter in
025
Dewaterin Time (Days)
1
Verity Storage (R')
52 50
OK
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
Wattles are required for Trout or HOW waters
60_DAYJOP,�TION
Under these circumstances it will be necessary to provide a minimum of 43 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 60 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which indicates that for any given 60 day period in NC the maximum amount of
Rainfall Energy that can be expected is 43 / of the annual total
In this situation
43/6 of RUSLE2 Required Volume
Design Depth (ft)
Proposed Basin Side Slopes
Infiltration Analvsis
59 95 fe
3
1 5 1 side slopes
Web Soil Survey http / /soildatamartnres usda goyiI
misec 11 2 Use Infiltration or
1 56 Skimmer Basin
10
Sat Hydraulic Con Ksat micro
Soil Permeability In/hr
Dewatenn Time (Days)
Basin Design
Minimum 2 1(L Vlq Ratio
Suggested To Width ft
4
Suggested Top Length (ft)
8
Final Design To Width ft
9
Final Design To Len ft
18
Final Design De it
3
Weir Width ft
4
Skimmer Size (in)
Is
Orifice Diameter in
025
Dewatenng Time (Days)
4
V rHy Storage (it')
202 50
OK
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Slit Check or Wattle upgrade from this outlet device
'Note in the ECTIan whether the 3,0 er 40 afaieptien is used. _ _
GENERAL NOTES
If the project involves HOW or Trout Waters wattles in conjunction with PAM (polyacrylamide) must be installed according
0 R¢
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Sfa 10 60 lo? faG a �
Printed Jan 12, 2012
flan Sh��t a
STEP 1 Input Project Information items in red are REQUIRED
Construction time
Mexander
s . .
Emusion
< 6 months (YIN)?
Y
Date Prepared
HQW (YIN)?
N
Elevation
Reviewed B
Trout (YIN)?
N
Tool ft
From Sta
F1-2+
00
to Sta
1 16 +
00
Right/Left
Rt
No Elev Data
/
/ Ditch Grade
4 000
%
Contributing
RIW Width
30
feet
Length of Run X
400
feet
SECTION 1 of 1
GQ Rt
County
Location
Mexander
s . .
Emusion
Pte ared By
2RIMAKI
Date Prepared
Level Ili A
Level III A Ex Iration
_ IMPIAM A
•
/
Reviewed B
>
Date Reviewed
Level III A #
Level III A Expiration
Disturbed Area = 0 28 acres
Drainage Area 2 34 acres
Drainage Area must equal or exceed the Disturbed Area found above
Surface Dewatenng Device N I Surtace Dewatenng Device must be utilized Answer Y
Is this a Typical Section (YIN)? Y
Will RUSLE2 be used to model
the Non Typical sections? N
Regression Constant, C 659 Table 2 7 (Level 111 Ref Manual)
Rainfall Factor R 160 Figure 2 1
Erodibildy Factor K 024 Table 2 2 or Web Sort Survey (httpAsoildatamart nres usda govl)
Soil Type Pacolet Rion informational purposes only
STEP 2 Ditch Liner requirements Utdrre the Required Liner tab and note recommendations on plans.
STEP 3 Velocity Control Requirements
TYPE BROCK SILT CHECKS �� spacedat 67 feet Choose Type Rock Silt
Chpecks ecks or Wattles
OR WATTLES
See the HELP Tab for additional clarification and an example on how to place on plans
Start with Option 5
OPTION 4 Using RUSLE2 Analysts to determine required storage
OPTION 4A For DRAINAGE AREA < 3 Acre Use V=CRKs to determine storage
Regression Constant, C 659
Rainfall Factor R 160
Erodibddy Factor K 024 From Step 1 above
Sod Type Pacolet Rion
Ditchline Slope s 0 04000 ft/ft
V= 83002 ft /actyr
Required Storage Volume= F-2-2866 ft3 See Option 5
OPTION 4B For DRAINAGE AREA < 3 Acre Use RUSLE2 Modeling to determine storage
Sediment Delivery from RUSLE2 0 00 tonslacre/yr
Converting to ft3 /ac/yr NIA ft /actyr
Required Storage Volume= F NIA ft3 See Option 5
OPTION 4C Using the Required Storage Volume from Option 4A or 4B to determine # of Wrapped TRSGA/Wattfes Required
These devices can be used to satisfy the velocity requirements in Step 3
Storage from Wrapped Type A Rock Silt Checks or Wattles Option of using Wrapped Type A Rock Silt
Enter Ditch Front Slope Gradient (H 10 2 1 Checks or Wattles
Enter Ditch Back Slope Gradient (H 10 15 1
Enter Device Height 1 5 ft
Area Behind Device 3 94 f?
Length of Ditch Behind Device 37 50 ft 3 See Option 5
Storage Behind Device (assumes 651 effectency) 319 ft
Wrapped TRSGA/Warges required X Go to Option 5
Total NIA ft
COMMENTS Designer still has the option of using Opt on 5 or
USE 60 Day Option
USE Infiltration Basin
OPTION 6 Aftematrve Designs
IMPORTANT Before usin O tion 6 be sure that the information in Step 1 is accurate!
There may be cases where the RUSLE2 Analysis (Option 4) yields an excessive number of devices to achieve
storage requirements and site constraints disallow Infiltration and skimmer basin (option 5) installation
Therefore it will be necessary to utilize the option below that best fits your situation The 60 Day Option
Is not available for projects involving HOW or Trout Waters
—The minimum basin size for a skimmer to function properly is 20 x10 If the basin dimensions are
less than this size an infiltration basin must be utilized regardless of dewatering time
30 DAY OPTION
Under these circumstances it will be necessary to provide a minimum of 23 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 30 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which indicates that for any given 30 day period in NC the maximum amount of
Rainfall Energy that can be expected is 23 / of the annual total
In this situation
23 / of RUSLE2 Required Volume
Design Depth (ft)
Proposed Basin Side Slopes
Infiltration snnivsic
T7-1 6414 ft' L
1 5 1 side slopes
Web Soil Survey htt J /soildatamart nres usda gov
misec 0 0 Skimmer Basin
0 00 Required
N/A
Sat Hydraulic Con (Ksat micro
Soil Permeability in/hr
Dewaterin Time (Days)
Basin Design
Minimum 2 1(L
K9 Ratio
Su ested To Width ft
4
Suggested Top Length (ft)
8
Final Design Top Width it
_ 5
Final Design To Len ft
10
Final Design De ft
3
Weir Width ft -,-
4
Skimmer Size (in)
is
Orifice Diameter in
025
Dewaten Time (Days)
1
V rlfy St rage ire'!
52 50
Too Low
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
Wattles are required for Trout or HOW waters
60 DAY OPTION
Under these circumstances it will be necessary to provide a minimum of 43 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 60 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which indicates that for any given 60 day period in NC the maximum amount of
Rainfall Energy that can be expected is 43 / of the annual total
In this situation
43 / of RUSLE2 Required Volume
Design Depth (ft)
Proposed Basin Side Slopes
Infilhr lh.n An.ly m
11991 ft3
3 W
1 5 1 side slopes
Web Soil Survey (http / /soildatamart nres usda gov
m /sec 11 2 Use Infiltration or
1 57 Skimmer Basin
10
Sat Hydraulic Con Ksat, micro
Soil Permeability m1hr
Dewatenng Time (Days)
Basin Design
Minimum 2 1(L
WJ Ratio
Suggested To Width ft
5
Suggested Top Length (ft)
10
Final Design To Width ft
9
Final Design To Len ft
18
Final Design De ft
3
Weir Width ft
4
Skimmer Size (in)
Is
Orifice Diameter m
026
Dewatering Time (Days)
4
Verity storage (n')
202 50
OK
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
N,te ,n fh'e E'C /an wh'e_ther fNe 3011i0��layi,'ORR is used :.
GENERAL NOTES
if the project involves HOW or Trout Waters wattles in conjunction with PAM (polyacrylamide) must be installed according
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STEP 1 Input Project Information items in red are REQUIRED SECTION 1 of 1
Construction time
< 6 months (YIN)?
Y
HOW (YIN)?
N
Elevation
Trout (Y /N)?
N
Tool ft
_ From Ste
16 +
00
to Ste
19 +
00
RightlLeft
Rt
No Elev Data /
/ Ditch Grade
1 000 A
OR,A
Contributing
RM Width 30 feet
Length of Run X 300 feet
Disturbed Area = 021 acres
Drainage Area 1 59 acres
Drainage Area must equal or exceed the Disturbed Area found above
Surface Dewatenng Device Y Surface Dewatenng Device must be utilized Answer Y
Is this a Typical Section (Y /N)? Y
Will RUSLE2 be used to model
the Non Typical sections? N
County Alexander
Location
Pre ared +B -it- Gds 3+ • DEShin
Date Pre ared — i
Level III A#
Level III A Expiration
Reviewed B 1
Date Reviewed
Level III A # {
Level III A Expiration
Regression Constant, C 659 Table 2 7 (Level Ill Ref Manual)
Rainfall Factor R 160 Figure 2 1
Erodibility Factor K 024 Table 2 2 or Web Soil Survey (http Asoi /datamart nres usda gow)
Soil Type Pacolet Rion informational purposes only
STEP 2 Ditch Liner requirements Util¢e the Required Liner tab and note recommendations on -plans
STEP 3 Velocity Control Requirements
Velocity control is not required
TYPES ROCK SILT CHECKS spaced at wA feet The outlet device frorn Option 4 5
OR WATTLES or 6 will be sufficient
See the HELP Tab for additional clanfication and an example on how to place on plans
Start with Option 5
OPTION 4 Using RUSLE2 Analysts to determine required storage
OPTION 4A For DRAINAGE AREA < 3 Acre Use V=CRKs to determine storage
Regression Constant C 659
Rainfall Factor R 160
Erodibility Factor K 024 From Step 1 above
Soil Type Pacolet Rion
Ditchline Slope s 0 01000 Wit
V= 20761 ft' /ac/yr
Required Storage Volume= 42 8671`0 See Op ton 5
OPTION 4B For DRAINAGE AREA < 3 Acre Use RUSLE2 Modeling to determine storage
Sediment Delivery from RUSLE2 0 00 tons /acretyr
Converting to It3/aC/yr N/A ft' /ate
Required Storage Volume= F NIA ft3 See Option 5
OPTION 4C Using the Required Storage Volume from Option 4A or 4B to determine # of Wrapped TRSC- A/Wattles Required
These devices can be used to satisfy the velocity requirements in Step 3
Storage from Wrapped Type A Rock Silt Checks or Wattles Option of using Wrapped Type A Rock Silt
Enter Ditch Front Slope Gradient (H W 2 1 Checks or Wattles
Enter Ditch Back Slope Gradient (H 10 15 1
Enter Device Height 1 5 It T
Area Behind Device 3 94 fe
Length of Ditch Behind Device 150 00 ft See Option 5
Storage Behind Device (assumes 651 effeclency) 127 97 ft3
Wrapped TRSC- A/Wattles required X Go to Option 5
Total N/A ft'
COMMENTS Designer still has the option or using i
USE 60 Day Option
USE Infiltration Basin
1 Wattle with PAM Will be added before last device
)ption 5 or 6
Contributing
RM Width 30 feet
Length of Run X 300 feet
Disturbed Area = 021 acres
Drainage Area 1 59 acres
Drainage Area must equal or exceed the Disturbed Area found above
Surface Dewatenng Device Y Surface Dewatenng Device must be utilized Answer Y
Is this a Typical Section (Y /N)? Y
Will RUSLE2 be used to model
the Non Typical sections? N
County Alexander
Location
Pre ared +B -it- Gds 3+ • DEShin
Date Pre ared — i
Level III A#
Level III A Expiration
Reviewed B 1
Date Reviewed
Level III A # {
Level III A Expiration
Regression Constant, C 659 Table 2 7 (Level Ill Ref Manual)
Rainfall Factor R 160 Figure 2 1
Erodibility Factor K 024 Table 2 2 or Web Soil Survey (http Asoi /datamart nres usda gow)
Soil Type Pacolet Rion informational purposes only
STEP 2 Ditch Liner requirements Util¢e the Required Liner tab and note recommendations on -plans
STEP 3 Velocity Control Requirements
Velocity control is not required
TYPES ROCK SILT CHECKS spaced at wA feet The outlet device frorn Option 4 5
OR WATTLES or 6 will be sufficient
See the HELP Tab for additional clanfication and an example on how to place on plans
Start with Option 5
OPTION 4 Using RUSLE2 Analysts to determine required storage
OPTION 4A For DRAINAGE AREA < 3 Acre Use V=CRKs to determine storage
Regression Constant C 659
Rainfall Factor R 160
Erodibility Factor K 024 From Step 1 above
Soil Type Pacolet Rion
Ditchline Slope s 0 01000 Wit
V= 20761 ft' /ac/yr
Required Storage Volume= 42 8671`0 See Op ton 5
OPTION 4B For DRAINAGE AREA < 3 Acre Use RUSLE2 Modeling to determine storage
Sediment Delivery from RUSLE2 0 00 tons /acretyr
Converting to It3/aC/yr N/A ft' /ate
Required Storage Volume= F NIA ft3 See Option 5
OPTION 4C Using the Required Storage Volume from Option 4A or 4B to determine # of Wrapped TRSC- A/Wattles Required
These devices can be used to satisfy the velocity requirements in Step 3
Storage from Wrapped Type A Rock Silt Checks or Wattles Option of using Wrapped Type A Rock Silt
Enter Ditch Front Slope Gradient (H W 2 1 Checks or Wattles
Enter Ditch Back Slope Gradient (H 10 15 1
Enter Device Height 1 5 It T
Area Behind Device 3 94 fe
Length of Ditch Behind Device 150 00 ft See Option 5
Storage Behind Device (assumes 651 effeclency) 127 97 ft3
Wrapped TRSC- A/Wattles required X Go to Option 5
Total N/A ft'
COMMENTS Designer still has the option or using i
USE 60 Day Option
USE Infiltration Basin
1 Wattle with PAM Will be added before last device
)ption 5 or 6
OPTION 6 A/tematfve Designs
IMPORTANT Before using Option 6 be sure that the information in Step 1 is accurate!
There may be cases where the RUSLE2 Analysis (Option 4) yields an excessive number of devices to achieve
storage requirements and site constraints disallow infiltration and skimmer basin (option 5) installation
Therefore it will be necessary to utilize the option below that best fits your situation The 60 Day Option
is not available for projects involving HQW or Trout Waters
"The minimum basin size for a skimmer to funcbon property is 20x10 If the basin dimensions are
less than this size an infiltmilon basin must be utilized regardless of dewatering time
301DAYd,OPTION
Under these circumstances it will be necessary to provide a minimum of 23 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 30 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level 111 Reference Manual which indicates that for any given 30 day period in NC the maximum amount of
Rainfall Energy that can be expected is 23 / of the annual total
In this situation
23 / of RUSLE2 Required Volume
Design Depth (ft)
Proposed Basin Side Slopes
Infimratinn Analvsis
12 03 fe
3 1 7
1 5 1 side slopes
Web Soil Survey h / /sorldatamartnres usda govn
misec 0 0 Skimmer Basin
0 00 Required
WA
Sat. Hydraulic Con (Ksat micro
Soil Permeability in/hr
Dewaterin Time (Days)
Basin Design
Minimum 2 1(L
W) Ratio
Suggested To Width ft
2
Suggested Top Length (ft)
Suggested To Length (ft)
4
Final Design To Width ft
Final Design To Width ft
5
Final Design To Len ft
Final Design To Len ft
10
Final Design De ft
Final Design De ft
3
Weir Width ft
Weir Width ft
4
Skimmer Size (in)
Skimmer Size (in)
1 5
Orifice Diameter in
Orifice Diameter in
025
Dewatering Time (Days)
Dewatenn Time (Days)
1
V rFiy Storag (R')
Verify Storage (fe)
52 5
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
Wattles are required for Trout or HOW waters
60 DAY OPTION
Under these circumstances it will be necessary to provide a minimum of 43 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 60 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which Indicates that for any given 60 day period in NC the maximum amount of
Rainfall Energy that can be expected is 43 / of the annual total
In this situation
43 / of RUSLE2 Required Volume
Design Depth (ft)
Proposed Basin Side Slopes
Infiltrafinn Anaivsis
2248 ft'
3 �
1 5 1 side slopes
Web Sod Survey (h / /soddatamart nres usda gov/)
misec 9 0 Use Infiltration or
1 26 Skimmer Basin
12
Sat Hydraulic Con Ksat micro
Soil Permeability in/hr
Dewatenn Time (Days)
Basin Design
Minimum 2 1(L M Ratio
Suggested To Width ft
2
Suggested Top Length (ft)
4
Final Design To Width ft
9
Final Design To Len ft
18
Final Design De ft
3
Weir Width ft
4
Skimmer Size (in)
Is
Orifice Diameter in
025
Dewatering Time (Days)
4
V rFiy Storag (R')
202 50
OK
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
WiFfean the EC Plan whether the 30 or 60 days #tfen is used.
GENERAL NOTES
If the project involves HOW or Trout Waters wattles in conjunction with PAM (potyacrylamide) must be installed according
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STEP 1 Input Project Information items in red are REQUIRED
Construction time
< 6 months (YIN)? Y
HOW (YIN)? N Elevation
Trout (YIN)? N Tool ft
From Sta 1 19 + 00
to Ste 1 22 + 00
7A Rt
SECTION 1 of 1
Right/Left Rt
No Elev Data
/
Level III A Expiration _ itioidekow
/ Ditch Grade 1 000
A
Reviewed B
Contributing
Date Reviewed
R1W Width 30
feet
Level III A #
Length of Run X 300
feet
Level III A Expiration
Disturbed Area = 021
acres
Drainage Area 197
acres
Drainage Area must equal or exceed the Disturbed Area found above
Surface Dewatenng Device
Y
Surface Dewatenng Device must be utilized Answer Y
Is this a Typical Section (YIN)?
Y
Will RUSLE2 be used to model
the Non Typical sections?
N
Regression Constant, C 659 Table 2 7 (Level l/l Ref Manual)
Rainfall Factor R 160 Figure 2 1
Erodibillty Factor K 024 Table 2 2 or Web Soil Survey (http Asoddatamart nres usda govQ
Soil Type Pacolet Rion informational purposes only
STEP 2 Ditch Liner requirements Utilize the Required Liner tab and note recommendations on plans.
STEP 3 Velocity Control Requirements
Velocity control is not required
TYPE B ROCK SILT CHECKS spaced at N/A feet The outlet device from Option 4 5
OR WATTLES or 6 will be sufficient
See the HELP Tab for additional clarification and an example on how to place on plans
Start With Option 5
OPTION 4 Using RUSLE2 Analysis to determine required storage
OPTION 4A For DRAINAGE AREA < 3 Acre Use V=CRKs to determine storage
Regression Constant C 659
Rainfall Factor R 160
Erodibility Factor K 024 From Step 1 above
Soil Type Pacolet Rion
Ditchline Slope s 0 01000 Wit
V= 20751 it /acJyr
Required Storage Volume= 42 87 ft3 See Option 5
OPTION 46 For DRAINAGE AREA < 3 Acre Use RUSLE2 Modeling to determme storage
Sediment Delivery from RUSLE2 0 00 tons /acrefyr
Converting to ft3 /ac/yr. N/A It3laclyr
Required Storage Volume= F NIA ft3 See Option 5
OPTION 4C Using the Required Storage Volume from Option 4A or 4B to determine # of Wrapped TRSC- AANatties Required
These devices can be used to satisfy the velocity requirements in Step 3
Storage from Wrapped Tyne A Rock Silt Checks or Wattles Option of using Wrapped Type A Rock Silt
Enter Ditch Front Slope Gradient (H V) 2 1 Checks or Wattles
Enter Ditch Back Slope Gradient (H V) 15 1
Enter Device Height 1 5 It
Area Behind Device 3 94 f?
Length of Ditch Behind Device 150 00 ft See Option 5
Storage Behind Device (assumes 651 effeciency) 127 97 ft3
Wrapped TRSGAAWatties required X Go to Option 5
Total N/A ft
COMMENTS Designer still has the option of using Option 5 or 6
USE 60 Day Option
USE Infiltration Basin
1 Wattle with PAM Will be added before last device
OPTION 6 A/temabve Designs
IMPORTANT Before using Option 6 be sure that the information in Step 1 Is accurate!
There may be cases where the RUSLE2 Analysis (Option 4) yields an excessive number of devices to achieve
storage requirements and site constraints disallow Infiltration and skimmer basin (option 5) Installation
Therefore it will be necessary to utilize the option below that best fits your situation The 60 Day Option
is not available for projects Involving HOW or Trout Waters
"The minimum basin size for a skimmer to function property Is 20 x10 If the basin dimensions are
less than this size an Infiltration basin must be utilized regardless of dewatenng time
30 DAY OPTION_
Under these circumstances It will be necessary to provide a minimum of 23 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 30 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which indicates that for any given 30 day period in NC the maximum amount of
Rainfall Energy that can be expected is 23 / of the annual total
In this situation
23 A of RUSLE2 Required Volume
Design Depth (ft)
Proposed Basin Side Slopes
Infiltration Analvsis
F-1203
fe
3 �
1 5 1 side slopes
Web Sod Survey (http / /soildatamart nres usda gov/)
misec 0 0 Skimmer Basm
0 00 Required
NIA
Sat Hydraulic Con (Ksat micro
Soil Permeability in/hr
Dewatenng Time (Days)
Basin Design
Minimum 2 1(L
Ratio
Su ested To Width ft
2
Suggested Top Length (ft)
Suggested Top Len (ft)
4
Final Design To Width ft
Final Design To Width ft
5
Final Design To Len ft
Final Design To Len ft
10
Final Design Depth ft
Final Design De ft
3
Weir Width ft
Weir Width ft
4
Skimmer Size (in)
Skimmer Size (in)
15
Onfice Diameter in
Orifice Diameter in
025
Dewatenng Time (Days)
Dewaterin Time (Days)
1
Verity Storage Ift ►
V riry Storage (ft')
52 50
OK
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
Wattles are required for Trout or HOW waters
60 DAY OPTION_ "
Under these circumstances it will be necessary to provide a minimum of 43 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 60 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which indicates that for any given 60 day period in NC the maximum amount of
Rainfall Energy that can be expected is 43 A of the annual total
In this situation
43 / of RUSLE2 Required Volume
Design Depth (ft)
Proposed Basin Side Slopes
Infiltration Analvsis
22 48 fC'
3 V
1 5 1 side slopes
Web Sod Survey (http / /soildatamart nres usda ovn
m /sec 9 0 Use Infiltration or
1 26 Slimmer Basin
12
Sat Hydraulic Con Ksat micro
Soil Permeability inthr
Dewatenn Time (Days)
Basin Design
Minimum 2 1(L Ratio
Suggested To Width ft
2
Suggested Top Length (ft)
4
Final Design To Width ft
9
Final Design To Len ft
18
Final Design Depth ft
3
Weir Width ft
4
Skimmer Size (in)
15
Onfice Diameter in
025
Dewatenng Time (Days)
4
Verity Storage Ift ►
202 50
OK
PAM must be Introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
N�tetan ihejEC fla�wh`efh p h�30 er i0��ay�'�i'fi�n is used
GENERAL NOTES
If the project involves HOW or Trout Waters wattles in conjunction with PAM (polyacrylamide) must be installed according
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STEP 1 Input Project information items in red are REQUIRED
Construction time
Alexander
< 6 months (YIN)?
Y
HOW (YIN)?
N
Elevation
Pre ared B'
Trout(Y /N)?
N
{Tool ft
1
From Sta
22 +
00
Date Reviewed
Level III A #
to Sta
1 24 +
75
Right/Left
Rt
No Elev Data
/
/ Ditch Grade
1 000 A
Contributing
RIW Width
30 feet
Length of Run X
275 feet
p/an 5At" f 3
SECTION 1 of 1
M(J--
5
County
Alexander
Location
G�`tt7RMtz
+ 4_ IBM
Pre ared B'
Date -'Pre red -
Level III A
1
Level III A Ex irabon _ &�
Reviewed B
t
Date Reviewed
Level III A #
Level III A Expiration
Disturbed Area = 0 19 acres
Drainage Area 131 acres
Drainage Area must equal or exceed the Disturbed Area found above
Surface Dewatering Device Y Surface Dewatenng Device must be utilized Answer Y
Is this a Typical Section (Y /N)? Y
Will RUSLE2 be used to model
the Non Typical sections? N
Regression Constant, C 659 Table 2 7 (Level 111 Ref Manual)
Rainfall Factor R 160 Figure 2 1
Erodibillty Factor K 024 Table 2 2 or Web Soil Survey (http Asoddatamait nres usda gow)
Soil Type Pacolet Rion informational purposes only
STEP 2 Ditch Liner requirements Utilize the Required Liner tab and note recommendations on plans
STEP 3 Velocity Control Requirements
Velocity control is not required
TYPES ROCK SILT CHECKS 0 spacedat NIA feet The outlet device from Option 4 5
OR WATTLES or 6 will be sufficient
See the HELP Tab for additional clarification and an example on how to place on plans
Start with Option 5
OPTION 4 Using RUSLE2 Analysis to determine required storage
OPTION 4A For DRAINAGE AREA < 3 Acre Use V-CRKs to determine storage
Regression Constant C 659
Rainfall Factor R 160
Erodibility Factor K 024 From Step 1 above
Sod Type Pacolet Rion
Ditchline Slope s 0 01000 Wit
V= 20751 ft' /aGyr
Required Storage Volume= F 39 30 ft3 See Option 5
OPTION 4B For DRAINAGE AREA < 3 Acre Use RUSLE2 Modeling to determine storage
Sediment Delivery from RUSLE2 0 00 tons /acre/yr
Converting to ft 3 /aclyr N/A ft /actyr
Required Storage Volume= NIA ft3 See Option 5
OPTION 4C Using the Required Storage Volume from Option 4A or 4B to determine # of Wrapped TRSC- A/Wattles Required
These devices can be used to satisfy the velocity requirements in Step 3
Storage from Wrapped Type A Rock Silt Checks or Wattles Option of using Wrapped Type A Rock Silt
Enter Ditch Front Slope Gradient (H V9 2 1 I Checks or Wattles
Enter Ditch Back Slope Gradient (H to 1 5 1
Enter Device Height 15 ft
Area Behind Device 3 94 fe
Length of Ditch Behind Device 150 00 ft
3 See Option 5
Storage Behind Device (assumes 65'/ effedency) 12797 ft
Wrapped TRSGAlWatt/es required X Go to Option 5
Total N/A ft
COMMENTS Designer still has the option of using Option 5 or 6
USE 60 Day Option
USE Infilration Basin
OPTION 6 Alternative Designs
IMPORTANT Before using O tion 6 be sure that the information in Stop 1 Is accurate!
There may be cases where the RUSLE2 Analysts (Option 4) yields an excessive number of devices to achieve
storage requirements and site constraints disallow infiltration and skimmer basin (option 5) installation
Therefore it will be necessary to utilize the option below that best fits your sduabon The 60 Day Option
Is not available for projects Involving HOW or Trout Waters
"The minimum basin size for a skimmer to function properly is 20 x10 If the basin dimensions are
less than this size an infiltration basin must be utilized regardless of dewatering time
30]DAY(QPTI0 Nt♦
Under these circumstances it will be necessary to provide a minimum of 23 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 30 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level Ili Reference Manual which indicates that for any given 30 day period in NC the maximum amount of
Rainfall Energy that can be expected is 23 / of the annual total
In this situation
23 / of RUSLE2 Required Volume
Design Depth (ft)
Proposed Basin Side Slopes
Infiltrahen Analvgm
110211111?
3 �
1 5 1 side slopes
Web Soil Survey h / /soildatamart nres usda gov
m/sec 0 0 Skimmer Basin
0 00 Required
WA
Sat Hydraulic Con (Ksat micro
Soil Penmeabil m1hr
Dewaten Time (Days)
Basin Design
Minimum 2 1(L tM1q Ratio
Suggested T Width ft
2
Suggested Top Length (ft)
4
Final Design To Width ft
5
Final Design To Len ft
10
Final Design ft
3
Weir Width 11
4
Skimmer Size (in)
Is
Orifice Diameter in
025
Dewatenn Time (Days)
1
V rift' Storage (f e)
5250
OK
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
Wattles are required for Trout or HQW waters
60]DAY(OPTION=
Under these circumstances it will be necessary to provide a minimum of 43 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 60 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which indicates that for any given 60 day period in NC the maximum amount of
Rainfall Energy that can be expected is 43 / of the annual total
In this situation
43 A of RUSLE2 Required Volume
Design Depth (ft)
Proposed Basin Side Slopes
Infiltration Anahrsis
20 61 fe
3
1 5 1 side slopes
Web Soil Survey (h / /soildatamart nres usda gov
m /sec 86 1 Use Infiltration or
12 OS Skimmer Basin
01
Sat Hydraulic Con Ksat, micro
Soil Permeability in/hr
Dewatenn Time (Days)
Basin Design
Minimum 2 1(L iM1q Ratio
Suggested To Width ft
2
Suggested Top Length (ft)
4
Final Design T Width ft
9
Final Design To Len ft
18
Final Design ft
3
Weir Width ft
4
Skimmer Size (in)
Is
Orifice Diameter in
025
Dewatenng Time (Days)
4
Verify Storage (ft')
2 O 50
OK
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
GENERAL NOTES
If the project involves HQW or Trout Waters wattles to conjunction with PAM (polyacrylamide) must be installed according
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STEP 1 Input Project Information Items in red are REQUIRED
Construction time
< 6 months (YIN)? Y
HQW (YIN)? N Elevation
Trout (YIN)? N Tool ft
From Sta 1 22 + 00
® L t-
SECTION 1 of 1
to Sta
1 24 + 75
Levehlll A #
n— ' _ x 4
Right/Left Lt
No Elev Data
/
Level 111 A Expiration �, v
/ Ditch Grade 1 000
/
Reviewed B
Contributing
Date Reviewed
RM Width 30
feet
Level III A #
Length of Run X 275
feet
Level III A Expiration
Disturbed Area = 019
acres
Drainage Area 02
acres
Drainage Area must equal or exceed the Disturbed Area found above
Surface Dewatenng Device
N
Is this a Typical Section (YIN)?
Y
Will RUSLE2 be used to model
the Non Typical sections?
N
Regression Constant C
659
Table 2 7 (Level 111 Ref Manual)
Rainfall Factor R
160
Figure 2 1
Erodibility Factor K
024
Table 2 2 or Web Sort Survey (httpAsoddatamartnres usda govQ
Sod Type
Pacolet Rion
Informational purposes only
STEP 2 Ditch Liner requirements Utilize the Required Liner tab and note recommendations on plans
STEP 3 Velocity Control Requirements
Velocity control is not required
TYPE B ROCK SILT CHECKS DO spaced at NIA feet The outlet device from Option 4 5
OR WATTLES or 6 will be sufficient
See the HELP Tab for additional clarification and an example on how to place on plans
Start with Option 4A
OPTION 4 Using RUSLE2 Analysis to determine required storage
OPTION 4A For DRAINAGE AREA < 3 Acre Use V=CRKs to determine storage
Regression Constant C 659
Rainfall Factor R 160
Erodibility, Factor K 024 From Step 1 above
Sod Type Pacolet Rion
Ditchline Slope s 0 01000 ftift
V= 20751 it /ac/yr
Required Storage Volume= 39 30 ft, Using 82 / of Rainfall Factor see note in cell
C4 Move on to Option 4C
OPTION 4B For DRAINAGE AREA < 3 Acre Use RUSLE2 Modeling to determine storage
Sediment Delivery from RUSLE2 0 00 tons /acre/yr
Converting to lt3/aclyr WA ft' /aclyr
Required Storage Volume= N/A ft3 See Option 4A
OPTION 4C Using the Required Storage Volume from Option 4A or 4B to determine # of Wrapped TRSC- A/Watt/es Required
These devices can be used to satisfy the velocity requirements in Step 3
Storage from Wranoed Tyne A Rock Sift Checks or Wattles Option of using Wrapped Type A Rock Silt
Enter Ditch Front Slope Gradient (H V) 2 1 I Checks or Wattles
Enter Ditch Back Slope Gradient (H V) 15 1
Enter Device Height 1 5 ft GOOD Place measure(s) on EC Plan Start
Area Behind Device 3 94 ft2
Length of Ditch Behind Device 150 00 ft with the first device close the outlet
3 paint as possible and then space a them evenly
Storage Behind Device (assumes 65•/ effeciency) 12797 ft
Wrapped TRSGA/WatUes required X 1 01 up the grade PAM should not be placed on
Total 12797 ft
the last BMP at outlet
.vmmcri 10 Designer still has the option of us ng Option 5 or 6
2 (18 ) wattles Anll be used for storage = ( 256 cu ft) and a 6 x12 x2 TRSD B = (60 cu ft) will also be used
Total storage =( 316 cu ft )
'AM will be applied on the last wattle before the TRSD B
STEP 1 Input Project Information items in red are REQUIRED
Construction time
i
Alexander
s
< 6 months (YIN)?
Y
HQW (YIN)?
N
Elevation
Level 111 A #
Level 111 A Ex lrab6n
Trout (YIN)?
N
Tool ft
Date Reviewed
From Sta
29 -00
Level III A Expiration
to Sta
1 25 +
25
Right/Left
Rt
No Elev Data
/
/ Ditch Grade
1 000 /
Contributing
WIN Width
30 feet
Length of Run X
375 feet
Q Rt
SECTION 1 of 1
County
Location
i
Alexander
s
s .
a
Prepared By
RECL _
Date Prepared
Level 111 A #
Level 111 A Ex lrab6n
_ _
e
Reviewed B
Date Reviewed
i
Level III A#
Level III A Expiration
Disturbed Area = 0 26 acres
Drainage Area 1 28 acres
Drainage Area must equal or exceed the Disturbed Area found above
Surface Dewatenng Device Y I Surface Dewatenng Device must be utilized Answer Y
Is this a Typical Section (YIN)? Y
Will RUSLE2 be used to model
the Non Typical sections? N
Regression Constant, C 659 Table 2 7 (Level I// Ref Manual)
Rainfall Factor R 160 Figure 2 1
Erodibility Factor K 024 Table 2 2 or Web Soil Survey (httpAsoddatamart nres usda gow)
Soil Type Pacolet Rion informational purposes only
STEP 2 Ditch Liner requirements Utilize the Required Liner tab and note recommendations on plans
STEP 3 Velocity Control Requirements
TYPE B ROCK SILT CHECKS 1 spaced at 188 feet Choose between Type B Rock Silt
Checks or Wattles
OR WATTLES
See the HELP Tab for additional clarification and an example on how to place on plans
Start With Option 5
OPTION 4 Using RUSLE2 Analysis to determine required storage
OPTION 4A For DRAINAGE AREA < 3 Acre Use V =CRKs to determine storage
Regression Constant C 659
Rainfall Factor R 160
Eroditi ty Factor K 024 From Step 1 above
Sod Type Pacolet Rion
Ditchline Slope s 0 01000 Wit
V= 20751 ft /ac/yr
Required Storage Volume= F 53 59 ft3 See Option 5
OPTION 4B For DRAINAGE AREA < 3 Acre Use RUSLE2 Modeling to determine storage
Sediment Delivery from RUSLE2 0 00 tonslacre/yr
Converting to ft3 /ac/yr NIA ft3 /actyr
Required Storage Volume= F NIA ft3 See Option 5
OPTION 4C Using the Required Storage Volume from Option 4A or 4B to determine # of Wrapped TRSGA/Wattles Required
These devices can be used to satisfy the velocity requirements in Step 3
Storage from Wrapped Type A Rock Silt Checks or Wattles Option of using Wrapped Type A Rock Silt
Enter Ditch Front Slope Gradient (H V) 2 1 Checks or Wattles
Enter Ditch Back Slope Gradient (H V) 15 1
Enter Device Height 1 5 ft
Area Behind Device 3 94 fe
Length of Ditch Behind Device 150 00 ft 3 See Option 5
Storage Behind Device (assumes 651 effeciency) 127 97 ft
Wrapped TRSGA/Wattles required X Go to Option 5
Total NIA ft
COMMENTS Designer still has the option of using
USE Infiltration Basin
USE 60 Day option
)ption 5 or 6
OPTION 6 Altemative Designs
IMPORTANT Before using Option 6 be sure that the information in Step 1 is accuratel
There may be cases where the RUSLE2 Analysis (Option 4) yields an excessive number of devices to achieve
storage requirements and site constraints disallow infiltration and skimmer basin (option 5) installation
Therefore it will be necessary to utilize the option below that best fits your situation The 60 Day Option
is not available for projects involving HQW or Trout Waters
—The minimum basin size for a skimmer to function properly is 20 x10 If the basin dimensions are
less than this size an infiltration basin must be utilized regardless of dewatering time
30 DAY OPTION
Under these circumstances it will be necessary to provide a minimum of 23 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 30 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which indicates that for any given 30 day period in NC the maximum amount of
Rainfall Energy that can be expected is 23 / of the annual total
In this situation
23 / of RUSLE2 Required Volume
Design Depth (ft)
Proposed Basin Side Slopes
Infiltration Analysis
15 03 ft�
3
1 5 1 side slopes
Web Soil Survey (http / /soildatamart nres usda govn
m /sec 0 0 Skimmer Basm
0 00 Required
Sat Hydraulic Con (Ksat micro
Soil Permeability m/hr
Dewatenng Time (Days)
N/A
Basin Design
Minimum 2 1(L WJ Ratio
Suggested To Width ft
2
Suggested Top Length (ft)
4
Final Design To Width ft
5
Final Design To Length ft
10
Final Design De ft
3
Weir Width ft
4
Skimmer Size (in)
is
Orifice Diameter in
025
Dewatenng Time (Days)
1
V riry storage (fl
5250
OK
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
Wattles are required for Trout or HQW waters
60 DAY OPTION —
Under these circumstances it will be necessary to provide a minimum of 43 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 60 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which indicates that for any given 60 day period in NC the maximum amount of
Rainfall Energy that can be expected is 43 / of the annual total
In this situation
43 / of RUSLE2 Required Volume
Design Depth (ft)
Proposed Basin Side Slopes
Infiltration Analvsis
28 1-5--lit
3
1 5 1 side slopes
Web Soil Survey (http / /soildatamart nres usda govn
Sat Hydraulic Con (Ksat micro
Soil Permeability in /hr
Dewatenng Time (Days)
01
Basin Design
Minimum 2 1(L K9 Ratio
Suggested To Width ft
3
Suggested Top Length (ft)
6
Final Design To Width ft
9
Final Design To Length ft
18
Final Design Depth ft
3
Weir Width ft
4
Skimmer Size (in)
15
Orifice Diameter in
025
Dewatenng Time (Days)
4
Venry Storag (te)
202 50
OK
m /sec 86 0 Use infiltration or
12 04 Skimmer Basil
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
GENERAL NOTES
If the project involves HQW or Trout Waters wattles in conjunction with PAM (polyacrylamide) must be installed according
nlm' a
Printed Jan 23, 2012
STEP 1 Input Project Information items in red are REQUIRED
Construction time
Alexander
< 6 months (YIN)?
Y
HOW (YIN)>
N
Elevation
Date Prepared
Trout (Y /N)?
N
Tool ft
•
i
From Sta
27 +
00
Level 111 A Expiration
to Sta
1 25 +
25
Length Ditch Behind Device
STEP 2 Ditch Liner requirements Utilize the Required Liner tab and note recommendations on plans
Right/Left
Lt
No Elev Data
/
/ Ditch Grade
1 000 /
Contributing
OR WATTLES
RIW Width
30 feet
Length of Run X
175 feet
(!!D Z-t
SECTION 1 of 1
County
Alexander
V
® .
EROsio,n DESign
Location
Pre ared B y
,i 'E3,
Date Prepared
Is this a Typical Section (YIN)? Y
Level III A #
Will RUSLE2 be used to model
•
i
Level 111 A Ex irate n �{ —
Reviewed B
Date Reviewed
Level III A #
Regression Constant C 659 Table 2 7 (Level I// Ref Manual)
Level 111 A Expiration
Disturbed Area = 012 acres
Storage from Wrapped Type A Rock Silt Checks or Wattles
Drainage Area 0 12 acres
Drainage Area must equal or exceed the Disturbed Area found above
Enter Ditch Front Slope Gradient (H 110
Surface Dewatenng Device N
Is this a Typical Section (YIN)? Y
Enter Ditch Back Slope Gradient (H to
Will RUSLE2 be used to model
the Non Typical sections? N
1 5 ft
Regression Constant C 659 Table 2 7 (Level I// Ref Manual)
Rainfall Factor R 160 Figure 2 1
394 fiz
Erodibility Factor K 024 Table 2 2 or Web Soil Survey (http Asoddatamart nrcs usda gov/)
Soil Type Pacolet Rion informational purposes only
Length Ditch Behind Device
STEP 2 Ditch Liner requirements Utilize the Required Liner tab and note recommendations on plans
STEP 3 Velocity Control Requirements
Storage Behind Device (assumes 65•/ effectency) (
127 97 ft3
Velocity control is not required
TYPE 8 ROCK SILT CHECKS DO spaced at NIA feet
The outlet device from Option 4 5
OR WATTLES
or 6 will be sufficient
See the HELP Tab for additional clarification and an example on how to place on plans
Start with Option 4A
OPTION 4 Using RUSLE2 Analysts to deter/nine required storage
Total 12797 It
OPTION 4A For DRAINAGE AREA < 3 Acre Use V =CRKs to determine storage
Regression Constant, C 659
Rainfall Factor R 160
Erodibility Factor K 024 From Step 1 above
Soil Type Pacolet Rion
Ditchline Slope s 0 01000 ft/ft
V= 20751 ft /actyr
Required Storage Volume= 25 01 ft3 Using 82 / of Ra nfall Factor see note in cell
C4 Move on to Option 4C
OPTION 48 For DRAINAGE AREA < 3 Acre Use RUSLE2 Modeling to determine storage
Sediment Delivery from RUSLE2 0 00 tons /acretyr
Converting to ft'/actyr NIA ft /ac/yr
Required Storage Volume= NIA ft3 See Option 4A
OPTION 4C Using the Required Storage Volume from Option 4A or 4B to determine # of Wrapped TRSC- AANatt/es Required
These devices can be used to satisfy the velocity requirements in Step 3
Storage from Wrapped Type A Rock Silt Checks or Wattles
Option of using Wrapped Type A Rock Silt
Enter Ditch Front Slope Gradient (H 110
2 1
Checks or Wattles
Enter Ditch Back Slope Gradient (H to
15 1
Enter Device Height
1 5 ft
h
Behind Device
Area Be
394 fiz
GOOD Place measure(s) on EC Plan Start
Length Ditch Behind Device
150 00 ft
with the first device as close to the outlet
Storage Behind Device (assumes 65•/ effectency) (
127 97 ft3
Point possible and then space them evenly
Wrapped TRSGA/Wattles required X !
1 0
up the a grade PAM should not be placed on
the last BMP at outlet
Total 12797 It
COMMENTS
= (127 97cu ft ) and a 6 x12 x2 TRSD -B = ( 60 cu it ) will also be used
Total storage =(187 97cu ft )
PAM will be applied on the last wattle before the TRSD B
on 5 or
STEP 1 Input Project Information items in red are REQUIRED
Construction time
< 6 months (Y/N)? Y
HOW (YIN)? N Elevation
Trout (Y /N)? N Tool 1t
From Sta 1 32 + 50
�a Rr
SECTION 1 of 1
to Sta 1 29 + 00
Level 111 A* Irm
Right/Left. Rt
No Elev Data
/
Level III A Ex irab n
/ Ditch Grade 1 000
/
Reviewed B
Contributing
Date Reviewed
RIW Width 30
feet
Level III A #
Length of Run X 350
feet
Level III A Expiration
Disturbed Area = 024
acres
Drainage Area 114
acres
Drainage Area must equal or exceed the Disturbed Area found above
Surface Dewatenng Device
Y
Surface Dewatenng Device must be utilized Answer Y
Is this a Typical Section (YIN)?
Y
Will RUSLE2 be used to model
the Non Typical sections?
N
Regression Constant, C
659
Table 2 7 (Level III Ref Manual)
Rainfall Factor R
160
Figure 2 1
Erodibildy Factor K
024
Table 2 2 or Web Soil Survey (blip Asoddatamartnres usda govl)
Soil Type
Pacolet Rion
informational purposes only
STEP 2 Ditch Liner requirements Utilize the Required Liner tab and note recommendations on plans
STEP 3 Velocity Control Requirements
TYPE B ROCK SILT CHECKS r� spaced at 175 feet Choe a between Type Rock Silt
Checks a Wattll e
OR WATTLES
See the HELP Tab for additional clarification and an example on how to place on plans
Start with Option 5
OPTION 4 Using RUSLE2 Analysts to determine required storage
OPTION 4A For DRAINAGE AREA < 3 Acre Use V =CRKs to determine storage
Regression Constant C 659
Rainfall Factor R 160
Erodibility Factor K 024 From Step 1 above
Soil Type Pacolet Rion
Ditchline Slope s 0 01000 ft/ft
V= 20751 ft /ac/yr
Required Storage Volume= 50 02 ft3 See Option 5
OPTION 4B For DRAINAGE AREA < 3 Acre Use RUSLE2 Modeling to determine storage
Sediment Delivery from RUSLE2 0 00 tons /acre/yr
Converting to R3/ac/yr NIA It /actyr
Required Storage Volume= F N/A ft" See Option r
OPTION 4C Using the Required Storage Volume from Option 4A or 4B to determine # of Wrapped TRSGA/Watt /es Required
These devices can be used to satisfy the velocity requirements in Step 3
Storaoe from Wrapped Type A Rock Silt Checks or Wattles Option of using Wrapped Type A Rock Silt
Enter Ditch Front Slope Gradient (H V) 2 1 Checks or Wattles
Enter Ditch Back Slope Gradient (H V) 1 5 1
Enter Device Height 1 5 ft
Area Behind Device 3 94 fe
Length of Ditch Behind Device 150 00 It
Storage Behind Device (assumes 651 effectency) i w 127 97a ft3 See Option 5
Wrapped TRSC- A/Wattles required X _yGo to Option 5
Total NIA ft
COMMENTS
Infiltration Basin
Option 5 or 6
OPTION 6 Altematroe Designs
IMPORTANT Before using Option 6 be sure that the information in Step 1 is accurate!
There may be cases where the RUSLE2 Analysis (Option 4) yields an excessive number of devices to achieve
storage requirements and site constraints disallow Infiltration and skimmer basin (option 5) installation
Therefore it will be necessary to utilize the option below that best fits your situation The 60 Day Option
is not available for projects Involving HOW or Trout Waters
"The minimum basin size for a skimmer to function properly is 20 x10 If the basin dimensions are
less than this size an infiltration basin must be utilized regardless of dewatenng time
30 DAY OPTION
Under these circumstances It well be necessary to provide a minimum of 23 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 30 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which indicates that for any given 30 day penod in NC the maximum amount of
Rainfall Energy that can be expected is 23 / of the annual total
In this situation
23 / of RUSLE2 Required Volume
Design Depth (ft)
Proposed Basin Side Slopes
Infiltration Analysis
_1403 ft
3 �
1 5 1 side slopes
Web Soil Survey (http / /solldatamart nres usda govo
Sat Hydraulic Con (Ksat micro
Sod Permeability m /hr
Dewaterin Time (Days)
NIA
Basin Design
Minimum 2 1(L
I9 Ratio
Suggested To Width ft
2
Suggested Top Length (ft)
Suggested Top Length (ft)
4
Final Design To Width ft
Final Design To Width ft
5
Final Design To Len ft
Final Design To Length ft
10
Final Design Depth ft
Final Design Depth ft
3
Weir Width ft
Weir Width ft
4
Skimmer Size (in)
Skimmer Size (in)
15
Orifice Diameter in
Orifice Diameter in
0 25
Dewaterng Time (Days)
Dewatenn Time (Days)
1
Verify Storage (f)
V rKy Storage (ft )
5250
OK
m /sec 0 0 Skimmer Ba in
0 00 Required
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
Wattles are required for Trout or HOW waters
60 DAY OPTION
Under these circumstances it will be necessary to provide a minimum of 43 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 60 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which indicates that for any given 60 day period in NC the maximum amount of
Rainfall Energy that can be expected is 43 / of the annual total
In this situation
43 / of RUSLE2 Required Volume 26 23 ft
Design Depth (ft) 3
Proposed Basin Side Slopes 1 5 1 side slopes
Infiltration Analysis
Web Soil Survey (http / /soildatamartnres usda govn
Sat Hydraulic Con (Ksat micro
Soil Permeability in /hr
Dewatenng Time (Days)
10
Basin Design
Minimum 2 1 (L 149 Ratio
Suggested To Width ft
3
Suggested Top Length (ft)
6
Final Design To Width ft
9
Final Design To Len ft
18
Final Design Depth ft
3
Weir Width ft
4
Skimmer Size (in)
is
Orifice Diameter in
025
Dewaterng Time (Days)
4
Verify Storage (f)
20250
OK
m /sec 11 2 Use infiltration or
1 56 Skimmer Bism
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
GENERAL NOTES
If the project involves HQW or Trout Waters wattles In conjunction with PAM (polyacrylamide) must be installed according
STEP 1 Input Project Information items in red are REQUIRED
Construction bme
Storage from Wrapped Type A Rock Silt Checks or Wattles
< 6 months (YIN)?
Y
Enter Ditch Front Slope Gradient (H V)
HQW (YIN)?
N
Elevation
Trout (YIN)?
N
Tool ft
From Sto 34 +
50
to Sta 1 33 +
00
3 94 fig
Right/Left
Rt
I No Elev Data Y
/ Ditch Grade
1 000
A
Contnbuting
150 00 It
RIW Width
30
feet
Length of Run X
150
feet
Disturbed Area =
010
acres
(0 Rl--
SECTION 1 of 1
Drainage Area 03 acres
Drainage Area must equal or exceed the Disturbed Area found above
Surface Dewatering Device N
Is this a Typical Section (YIN)? Y
Will RUSLE2 be used to model
the Non Typical sections? N
Regression Constant C 659 Table 2 7 (Level I// Ref Manual)
Rainfall Factor R 160 Figure 2 1
Erodibildy Factor K 024 Table 2 2 or Web Soil Survey (htipJ/soildatemart nres usda gow)
Soil Type Pacolet Rion tnformational purposes only
STEP 2 Ditch Liner requirements Utilize the Required Liner tab and note recommendations on plans
STEP 3 Velocity Control Requirements
Velocity control is not required
TYPE B ROCK SILT CHECKS spaced at NIA feet The outlet device from Option 4 5
OR WATTLES or 6 will be sufficient
See the HELP Tab for additional clarification and an example on how to place on plans
Start with Option 4A
OPTION 4 Using RUSLE2 Analysis to detennine required storage
OPTION 4A For DRAINAGE AREA < 3 Acre Use V=CRKs to determine storage
Regression Constant C 659
Rainfall Factor R 160
Erodibility Factor K 024 From Step 1 above
Sod Type Pacolet Rion
Ditchline Slope s 0 01000 ft/ft
V= 20751 ft /ac/yr
Required Storage Volume= 21 44 ft3 Using 82 of Rainfall Factor see note in cell
C4 Move on to Option 4C
OPTION 4B For DRAINAGE AREA < 3 Acre Use RUSLE2 Modeling to determine storage
Sediment Delivery from RUSLE2 0 00 tons /acre /yr
Converting to ft3/ac/yr NIA ft /ac/yr
Required Storage Volume= NIA ft" See Option 4A
OPTION 4C Using the Required Storage Volume from Option 4A or 4B to determine # of Wrapped TRSC- A/WatBes Required
These devices can be used to satisfy the velocity requirements in Step 3
Storage from Wrapped Type A Rock Silt Checks or Wattles
Option of using Wrapped Type A Rock Silt
Enter Ditch Front Slope Gradient (H V)
2 1
I
Checks or Wattles
Enter Ditch Back Slope Gradient (H V)
15 1
Enter Device Height
15 It
3 94 fig
GOOD Place measure(s) on EC Plan Start
Area Behind Device
+Kith the first d vice as close the outlet
Length of Ditch Behind Device
150 00 It
a
Point as passible and then space them evenly
Storage Behind Device (assumes 651 effeciency)
127 97 ft3
up the grade PAM should not be placed on
Wrapped TRSC- A/WatUes required X
1 0
the last BMP at outlet
Total 12797 ft
COMMENTS Designer stilt has the option of using i
2 (18 ) wattles will be used for storage = ( 255 94 cu ft)
A 12 x 24 x 3 TRSD B will be used at outlet
PAM will be applied on the last wattle before the TRSD B 7
)ption 5 or 6
STEP 1 Input Project Information items in red are REQUIRED
Construction time
< 6 months (YIN)? Y
HOW (YIN)? N Elevation
Trout (Y /N)? N Tool ft
From Ste 34 + 50
a a
�t
SECTION 1 of 1 is
to Ste 1 37 + 00
3 k
Levenui A IF
L+YA — _ �! "- • A
Right/Left Rt
No Elev Data
/
Level III AIEx iratfon
' cn-L
/ Ditch Grade 1 000
/
Reviewed B
Contributing
Date Reviewed
RM Width 30
feet
Level III A #
Length of Run X 250
feet
Level III A Expiration
Disturbed Area = 017
acres
Drainage Area 161
acres
Drainage Area must equal or exceed the Disturbed Area found above
Surface Dewatenng Device
Y
Surface Dewaterng Device mus be utilized Answer Y
Is this a Typical Section (Y /N)?
Y
Will RUSLE2 be used to model
the Non Typical sections?
N
Regression Constant, C 659 Table 2 7 (Level 111 Ref Manual)
Rainfall Factor R 160 Figure 2 1
Erodibility Factor K 024 Table 2 2 or Web Soil Survey (httpAsoddatamartnres usda govl)
Sod Type Pacolet Rion informational purposes only
STEP 2 Ditch Liner requirements Utilize the Required Liner tab and note recommendations on plans
STEP 3 Velocity Control Requirements
Velocity contras is not required
TYPE B ROCK SILT CHECKS spaced at N!A feet 711 outlet device from Option 4 5
OR WATTLES or 6 will be sufficient
See the HELP Tab for additional clarification and an example on how to place on plans
Start with Option 5
OPTION 4 Using RUSLE2 Analysis to determine required storage
OPTION 4A For DRAINAGE AREA < 3 Acre Use V =CRKs to determine storage
Regression Constant C 659
Rainfall Factor R 160
Erodibility Factor K 024 From Step 1 above
Soil Type Pacolet Rion
Ditchline Slope s 0 01000 ft/ft
V= 20751 ft' /ac/yr
Required Storage Volume= 35 73 ft3 See Option 5
OPTION 4B For DRAINAGE AREA < 3 Acre Use RUSLE2 Modeling to determine storage
Sediment Delivery from RUSLE2 0 00 tons /acre /yr
Converting to ft3 /ac/yr NIA ft /ac/yr
Required Storage Volume= NIA ft3 See Option 5 I
OPTION 4C Using the Required Storage Volume from Option 4A or 4B to determine # of Wrapped TRSC- A/Wattles Required
These devices can be used to satisfy the velocity requirements in Step 3
Storage from Wrapped Type A Rock Silt Checks or Wattles Option of using Wrapped Type A Rock Silt
Enter Ditch Front Slope Gradient (H V) 2 1 1 Checks or Wattles
Enter Ditch Back Slope Gradient (H V) 15 1
Enter Device Height 1 5 ft
Area Behind Device 3 94 fe
Length of Ditch Behind Device 150 00 ft
Storage Behind Device (assumes 65/ effeclency) r x 1 7 974fe Se Option 5
Wrapped TRSC- ANVatUes required X Go to Option 5
Total NIA it
COMMENTS Designer stilt has the option of usinq
USE 60 Day option
USE Infiltration Basin
Two wattles with PAM will be added before the last device
7ption 5 or 6
OPTION 6 Altematnee Designs
IMPORTANT Before using Option 6 be sure that the Information in Step 1 is accurate!
There may be cases where the RUSLE2 Analysis (Option 4) yields an excessive number of devices to achieve
storage requirements and site constraints disallow infiltration and skimmer basin (option 5) installation
Therefore it will be necessary to utilize the option below that best fits your situation The 60 Day Option
is not available for projects involving HQW or Trout Waters
—The minimum basin size for a skimmer to function properly is 20 x10 If the basin dimensions are
less than this size an infiltration basin must be utilized regardless of dewatenng bme
30 DAY OPTION 1
Under these circumstances it will be necessary to provide a minimum of 23 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 30 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which indicates that for any given 30 day period in NC the maximum amount of
Rainfall Energy that can be expected is 23 / of the annual total
In this situation
23 / of RUSLE2 Required Volume F-1002 ft'
Design Depth (ft) 3
Proposed Basin Side Slopes 1 5 1 side slopes
Infiltration Analvsis
Web Soil Survey (http / /soildatamart nres usda govn
Sat Hydraulic Con (Ksat micro
Sod Permeability m /hr
Dewatenng Time (Days)
Basin Design
Minimum 2 1 (L W) Ratio
Suggested To Width ft
2
Suggested Top Length (ft)
4
Final Design To Width ft
5
Final Design To Length ft
10
Final Design Depth ft
3
Weir Width ft
4
Skimmer Size (in)
15
Orifice Diameter in
025
Dewatenng Time (Days)
1
Verity St rag (it I d
5250
OK
misec NIA
0 0 Skimmer Sasin
000 Recl
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
Wattles are required for Trout or HQW waters
60 DAY OPTION
Under these circumstances it will be necessary to provide a minimum of 43 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 60 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which indicates that for any given 60 day period in NC the maximum amount of
Rainfall Energy that can be expected is 43 / of the annual total
In this situation
43 / of RUSLE2 Required Volume F 18 74 ft
Design Depth (ft) a
Proposed Basin Side Slopes 1 5 1 side slopes
Infiltration Anaivsis
Web Soil Survey (http / /soildatamart nres usda govn
Sat Hydraulic Con Ksat micro
Sod Permeability (in/hr)
Dewatering Time (Days)
Basin Design
Minimum 2 1(L W) Ratio
Suggested To Width ft
2
Suggested Top Length (ft)
4
Final Design To Width ft
9
Final Design To Length (it)
18
Final Design Depth ft
3
Weir Width ft
4
Skimmer Size (in)
is
Orifice Diameter m
025
Dewatenng Time (Days)
4
Verify Storage (n')
20250
OK
misec 11 2 Use infiltration or
1 56 Skimmer 8 ssi
10
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
GENERAL NOTES
If the project involves HQW or Trout Waters wattles in conjunction with PAM (polyacrylamide) must be installed according
1 f►
STEP 1 Input Project Information items in red are REQUIRED
Construction time
659
< 6 months (Y /N)?
Y
HOW (Y /N)?
N
Elevation
024
Trout (Y /N)?
N
Tool ft
From Sta
37 +
00
V= 20761 ft /ac/yr
to Sta
40 +
00
Right/Left
Rt
I No Elev Data
/
/ Ditch Grade
1 000 /
Contributing
Q /�f
SECTION 1 of 1
ERD�DES
-t Tgd Lutz EROs��n DESign
r . ,• � 2t1.212tiAi1
Level III A #
659
•
amino
Level III A Expiration 199RIamm
Reviewed By
Date Reviewed
024
RIWWidth 30 feet Level III A#
Length of Run X 300 feet Level 111 A Expiration
Disturbed Area = 021 acres
Drainage Area 2 04 acres
Drainage Area must equal or exceed the Disturbed Area found above
Surface Dewatenng Device Y r Surface Dewatering Device must be utilized Answer Y
Is this a Typical Section (YIN)? Y
Will RUSLE2 be used to model
the Non Typical sections? N
Regression Constant, C 659 Table 2 7 (Level 111 Ref Manual)
Rainfall Factor R 160 Figure 2 1
Erodibility Factor K 024 Table 2 2 or Web Soil Survey (http Asoddatamart nres usda govl)
Sod Type Pacolet Rion informational purposes only
STEP 2 Ditch Liner requirements Utilize the Required Liner tab and note recommendations on plans
STEP 3 Velocity Control Requirements
Velocity control is not required
TYPE B ROCK SILT CHECKS 0 spaced at N!A feet Th outlet d vice from Option 4 5
OR WATTLES of 6 will be sufficient
See the HELP Tab for additional clarification and an example on how to place on plans
Start with Option 5
OPTION 4 Using RUSLE2 Analysis to determine required storage
OPTION 4A For DRAINAGE AREA < 3 Acre Use V =CRKs to determine storage
Regression Constant C
659
Rainfall Factor R
160
Erodibility Factor K
024
From Step 1 above
Sod Type
Pacolet Rion
Ditchline Slope s
0 01000 ft/ft
V= 20761 ft /ac/yr
Required Storage Volume= 42 87 ft3 See Option 5
OPTION 4B For DRAINAGE AREA < 3 Acre Use RUSLE2 Modeling to determine storage
Sediment Delivery from RUSLE2 0 00 tons/acre /yr
Converting to 113/ar/yr N/A W /ac/yr
Required Storage Volume= N1A ft3 See Option 5
OPTION 4C Using the Required Storage Volume from Option 4A or 4B to determine # of Wrapped TRSGA/Watdes Required
These devices can be used to satisfy the velocity requirements in Step 3
Storage from Wrapped Type A Rock Silt Checks or Wattles Option of using Wrapped Type A Rock Silt
Enter Ditch Front Slope Gradient (H to 2 1 Checks or Wattles
Enter Ditch Back Slope Gradient (H V) 15 1
Enter Device Height 1 5 It
Area Behind Device 3 94 ft
Length of Ditch Behind Device 150 00 It
Storage Behind Device (assumes 651 effeciency) 127 97 ft'
See Option 5
Wrapped TRSGA/Watt /es required X Go to Option 5
Total NIA ft
COMMENTS Desiqner still has the option of using Option 5 or f
60 Day Option
Infiltration Basin
wattles with PAM will be added before the last device
OPTION 6 Altematrve Designs
IMPORTANT Before using Option 6 be sure that the information In Step 1 is accurate!
There may be cases where the RUSLE2 Analysis (Option 4) yields an excessive number of devices to achieve
storage requirements and site constraints disallow infiltration and skimmer basin (option 5) installation
Therefore it will be necessary to utilize the option below that best fits your situation The 60 Day Option
Is not available for projects involving HOW or Trout Waters
—The minimum basin size for a skimmer to function properly is 20 x10 If the basin dimensions are
less than this size an Infiltration basin must be utilized regardless of dewatenng time
30 DAY OPTION
Under these circumstances it will be necessary to provide a minimum of 23 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 30 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which indicates that for any given 30 day period in NC the maximum amount of
Rainfall Energy that can be expected is 23 / of the annual total
In this situation
23 / of RUSLE2 Required Volume F-1203 ft'
Design Depth (ft) 3
Proposed Basin Side Slopes 1 5 1 side slopes
Infiltration Analysis
Web Soil Survey (h / /soildatamart nres usda govn
m /sec 0 0 Skimmer Basin
0 00 Req aired
N/A
Sat Hydraulic Con (Ksat micro
Sod Permeability in /hr
Dewaterm Time (Days)
Basin Design
Minimum 2 1 (L
iM Ratio
Suggested To Width ft
2
Suggested Top Length (ft)
4
Final Design To Width ft
5
Final Design To Length ft
10
Final Design Depth ft
3
Weir Width ft
4
Skimmer Size (in)
is
Orifice Diameter m
025
Dewatenng Time (Days)
1
Verify Storag (fe)
5250
OK
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
Wattles are required for Trout or HOW waters
60 DAY OPTION
Under these circumstances it will be necessary to provide a minimum of 43 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 60 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which indicates that for any given 60 day period in NC the maximum amount of
Rainfall Energy that can be expected is 43 / of the annual total
In this situation
43/ of RUSLE2 Required Volume 22 48 ft3
Design Depth (ft) 3 -
Proposed Basin Side Slopes 1 5 1 side slopes
Infiltration Analvsis
Web Soil Survey (http / /soildatamart nres usda govn
Sat Hydraulic Con (Ksat micro
Sod Permeability in /hr
Dewatering Time (Days)
Basin Design
Minimum 2 1 (L
WJ Ratio
Suggested To Width ft
2
Suggested Top Length (ft)
4
Final Design To Width ft
9
Final Design To Length ft
18
Final Design Depth ft
3
Weir Width ft
4
Skimmer Size (in)
15
Orifice Diameter in
025
Dewatenng Time (Days)
4
V nfy St rag iR,)
2 O 50
OK
misec 11 2 Use Infiltration or
1 56 Skimmer Basin
10
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
GENERAL NOTES
If the project involves HOW or Trout Waters wattles in conjunction with PAM (polyacrylamide) must be installed according
37fa® — 4/0 too
Printed Jan 24, 2012
STEP 1 Input Project Information items in red are REQUIRED
Construction bme
< 6 months (YIN)? Y
HQW (YIN)? N Elevation
Trout (Y /N)? N Tool ft
From Sta 1 40 + 00
/y Rt
SECTION 1 of 1
to Sta 1 41 + 50
Storage from Wramoed Type A Rock Silt Checks or Wattles
Level III A# ?AN
Enter Ditch Front Slope Gradient (H V)
2 1
Right/Left Rt
No Elev Data
/
Level 111 A Ex iration t
m
_
e
/ Ditch Grade 1 000 A
Reviewed B
3 94 if
GOOD Place measure( ) on EC Plan Start
1
Contributing
Date Reviewed
Device
Length of Ditch Behind De
150 00 ft
Point as possible and theq space them evenly
RIW Width 30 feet
Level 111 A #
a
up the grade PAM should not placed on
Wrapped TRSC- AlWattles required X
10
Length of Run X 150 feet
Level III A Expiration
COMMENTS
Disturbed Area = 010 acres
Designer still has the option of using Option 5 or 6
Drainage Area 042 acres
Drainage Area must equal or exceed the Disturbed Area found above
Surface Dewatenng Device N
Is this a Typical Section (YIN)? Y
Will RUSLE2 be used to model
the Non Typical sections? N
Regression Constant, C 659 Table 2 7 (Level ill Ref Manual)
Rainfall Factor R 160 Figure 2 1
Erodibility Factor K 024 Table 2 2 or Web Sod Survey (http /lsoildatamart nres usda govl)
Sod Type Pacolet Rion informational purposes only
STEP 2 Ditch Liner requirements Utilize the Required Liner tab and note recommendations on plans
STEP 3 Velocity Control Requirements
Velocity control is not required
TYPE B ROCK SILT CHECKS spaced at N/A feet
The outlet device from Option 4 5
OR WATTLES
or 6 will be sufficient
See the HELP Tab for additional clarification and an example on how to place on plans
Start With Option 4A
OPTION 4 Using RUSLE2 Analysts to detennine required storage
OPTION 4A For DRAINAGE AREA < 3 Acre Use V =CRKs to determine storage
Regression Constant C 659
Rainfall Factor R 160
Erodibility, Factor K 024 From Step 1 above
Soil Type Pacolet Rion
Ditchlme Slope s 0 01000 Wit
V= 20751 ft /ac/yr
Required Storage Volume= 21 44 ft3 ring 82 of Rainfall Factor see no a in cell
I C4 Move on to Option 4C
OPTION 4B For DRAINAGE AREA < 3 Acre Use RUSLE2 Modeling to determine storage
Sediment Delivery from RUSLE2 0 00 tons/acre /yr
Converting to ft3/aclyr N/A ft' /ac/yr
Required Storage Volume= F N/A ft3 See Option 4A
OPTION 4C Using the Required Storage Volume from Option 4A or 4B to determine # of Wrapped TRSC- AANattles Required
These devices can be used to satisfy the velocity requirements in Step 3
Storage from Wramoed Type A Rock Silt Checks or Wattles
Option of using Wrapped Type A Rock Silt
Enter Ditch Front Slope Gradient (H V)
2 1
Checks or Wattles
Enter Ditch Back Slope Gradient (H V)
15 1
Enter Device Height
1 5 ft
3 94 if
GOOD Place measure( ) on EC Plan Start
Area Behind Devoe
vdth the first d vice as close to the outlet
Device
Length of Ditch Behind De
150 00 ft
Point as possible and theq space them evenly
Storage Behind Device (assumes 651 effeciency)
127 97 ft'
a
up the grade PAM should not placed on
Wrapped TRSC- AlWattles required X
10
the last BMP at outle
Total 12797 It
COMMENTS
Designer still has the option of using Option 5 or 6
2 (18 ) wattles will be used for storage = (170 cu It ) and a 6x1 2x3 TRSD B = ( 60 cu ft) will also be used
Total storage = ( 230 cu It )
PAM will be applied on the last wattle before the TRSD B
STEP 1 Input Project Information items in red are REQUIRED
Construction time
< 6 months (Y /N)? Y
HQW (YIN)? N Elevation
Trout (Y /N)? N Tool ft
From Sta 41 + 50
O Rt
SECTION 1 of 1
to Sta 1 42 + 25
Level ni AX Irm
RighULeft Rt
No Elev Data
/
Level III A Ex iration
/ Ditch Grade 1 000
/
Reviewed B
Contributing
Date Reviewed
RM Width 30
feet
Level III A #
Length of Run X 75
feet
Level 111 A Expiration
Disturbed Area = 005
acres
Drainage Area 018
acres
Drainage Area must equal or exceed the Disturbed Area found above
Surface Dewatenng Device
N
Is this a Typical Section (YIN)?
Y
Will RUSLE2 be used to model
the Non Typical sections?
N
Regression Constant, C 659 Table 2 7 (Level 111 Ref Manual)
Rainfall Factor R 160 Figure 2 1
Erodibility Factor K 024 Table 2 2 or Web Sod Survey (http Asoddatamart nres usda govt
Soil Type Pacoiet Rion informational purposes only
STEP 2 Ditch Liner requirements Utilize the Required Liner tab and note recommendations on plans
STEP 3 Velocity Control Requirements
Vplocrty control is not required
TYPE B ROCK SILT CHECKS 00 spaced at NIA feet Th- outlet device from Option 4 5
OR WATTLES or 6 will be sufficient
See the HELP Tab for additional clarification and an example on how to place on plans
Start With Option 4A
OPTION 4 Using RUSLE2 Analysis to determine required storage
OPTION 4A For DRAINAGE AREA < 3 Acre Use V =CRKs to determine storage
Regression Constant C 659
Rainfall Factor R 160
Erodibility Factor K 024 From Step 1 above
Soil Type Paeolet Rion
Ditchline Slope s 0 01000 ft/ft
V= 20751 ft /actyr
Required Storage Volume= r 1072 ft3 Using 82 / of Rainfall Factor see note in cell
C4 Move on to Option 4C
OPTION 4B For DRAINAGE AREA < 3 Acre Use RUSLE2 Modeling to determine storage
Sediment Delivery from RUSLE2 0 00 tons /acre /yr
Converting to ft3 /ac/yr NIA ft /ac/yr
Required Storage Volume= NIA ft3 See Option 4A
OPTION 4C Using the Required Storage Volume from Option 4A or 4B to determine # of Wrapped TRSGAANattles Required
These devices can be used to satisfy the velocity requirements in Step 3
Storage from Wrapped Type A Rock Silt Checks or Wattles Option of using Wrapped Type A Rock Silt
Enter Ditch Front Slope Gradient (H to 2 1 Checks or Wattles
Enter Ditch Back Slope Gradient (H V) 15 1
Enter Device Height 1 5 ft
Behind Device 3 94 if Pia a measu e(s) on EC Plan Start
Area Be with the first device as close to the outlet
Length hinDitch Behind Device 15000 ft
Storage Behind Device (assumes 65•/ effeciency) 63 98 ft3 Point le and then space them evenly
Wrapped TRSC- A/Wattles required X 10 up the e grate a,ie PAM should not be placed an
Total 6398 ft the last BMP at outlet
COMMENTS Designer still has the option of us ng Option 5 or 6
2 (18 ) wattles will be used for storage = ( 256 cu ft ) and a 6xl2x3 TRSD B = ( 60 cu ft ) will also be used
Total storage = ( 316 cu ft)
PAM will be applied on the last wattle before the TRSD B
STEP 1 Input Project Information Items in red are REQUIRED
SECTION 1 of 1
Construction time
Storage from Wrapped Type A Rock Silt Checks or Wattles
County
Option of using Wrapped 1 ype A Rock Silt
Enter Ditch Front Slope Gradient (H V)
< 6 months (Y /N)? Y
Chocks or Wattles
Alexander
1 5 1
HOW (YIN)? N
Elevation
Location
Area Behind Devi
Trout (Y /N)? N
Tool ft
GOOD Place measure(s) on EC Plan Start
Pre ared B
G�ST117. tL
From Sta
45 -75
Date Prepared
99LiOHJ1'li
to Sta
1 42 + 25
up the a grade PAM should not be placed an
Level III A #fl
1 0
RIghULeft Rt
No Elev Data
/
Level III A Expiration
/ Ditch Grade 1 000
/
Reviewed B
Designer still has the option of using Option 5 or 6
Contributing
Date Reviewed
RIW Width 30
feet
Level 111 A#
Length of Run X 350
feet
Level 111 A Expiration
Disturbed Area = 0 24
acres
Drainage Area 0 47
acres
Drainage Area must equal or exceed the Disturbed Area found above
Surface Dewatenng Device
N
Is this a Typical Section (YIN)?
Y
Will RUSLE2 be used to model
the Non Typical sections?
N
/G iPf
Regression Constant, C 659 Table 2 7 (Level/// Ref Manual)
Rainfall Factor R 160 Figure 2 1
Erodibllity Factor K 024 Table 2 2 or Web Soil Survey (http Asoildatamart nits usda gov/J
Soil Type Pacolet Rion informational purposes only
STEP 2 Ditch Liner requirements Utilize the Required Liner tab and note recommendations on plans
STEP 3 Velocity Control Requirements
TYPE BROCK SILT CHECKS 0 spaced at 175 feet Choose between Type B Rock Silt
OR WATTLES I Checks or Wattles
See the HELP Tab for additional clarification and an example on how to place on plans
Start with Option 4A
OPTION 4 Using RUSLE2 Analysts to determine required storage
OPTION 4A For DRAINAGE AREA < 3 Acre Use V=CRKs to determine storage
Regression Constant C 659
Rainfall Factor R 160
Erodibility Factor K 024 From Step 1 above
Soil Type Pacolet Rion
Ditchline Slope s 0 01000 Wit
V= 20751 ft /ac/yr
Required Storage Volume= F 5002 ft3 Using 82 / of Rainfall Factor see note in cell
C4 Move on to Option 4C
OPTION 4B For DRAINAGE AREA < 3 Acre Use RUSLE2 Modeling to determine storage
Sediment Delivery from RUSLE2 0 00 tons /acre/yr
Converting to ft3 /aclyr N/A ft /aclyr
Required Storage Volume= NIA ft? See Option 4A
OPTION 4C Using the Required Storage Volume from Option 4A or 4B to determine # of Wrapped TRSC A/Waftles Required
These devices can be used to satisfy the velocity requirements in Step 3
Storage from Wrapped Type A Rock Silt Checks or Wattles
Option of using Wrapped 1 ype A Rock Silt
Enter Ditch Front Slope Gradient (H V)
2 1
Chocks or Wattles
Enter Ditch Back Slope Gradient (H V)
1 5 1
Enter Device Height
1 5 ft
Area Behind Devi
3 94 ft2
GOOD Place measure(s) on EC Plan Start
Behind
Length of d Behind Device
150 00 ft
with the first device as close to the outlet
point possible and then space them evenly
Storage Behind Device (assumes 651 effeclency)
127 97 ft'
up the a grade PAM should not be placed an
Wrapped TRSC- A/Wattles required X
1 0
Total 12797 ft
the last BMP at outlet
COMMENTS
Designer still has the option of using Option 5 or 6
2 (18 ) wattles will be used for storage = ( 214 cu ft) and a 6x12x3 TRSD B = (60 cu ft) will also be used
Total storage = ( 374cu ft)
PAM will be applied on the last wattle before the TRSD B
STEP 1 Input Project Information items in red are REQUIRED
Construction time
< 6 months (YIN)? Y
HOW (YIN)? N Elevation
Trout (Y /N)? N Tool ft
From Sta 50 + 00
SECTION 1 of 1
to Ste 1 45 + 75
659
Rainfall Factor R
Level III A#
Right/Left Rt
No Elev Data
/
Level III A Expiration
/ Ditch Grade 2000
A
Reviewed B
V= 41501 ft /ac/yr
Contributing
Date Reviewed
R/W Width 30
feet
Level 111 A #
Length of Run X 425
feet
Level III A Expiration
Disturbed Area = 029
acres
Drainage Area 14
acres
Drainage Area must equal or exceed the Disturbed Area found above
Surface Dewatenng Device
Y
r Surface Dewaterng Device must be utilized Answer Y
Is this a Typical Section (YIN)?
Y
Will RUSLE2 be used to model
the Non Typical sections?
N
Regression Constant C 659 Table 2 7 (Level /I/ Ref Manual)
Rainfall Factor R 160 Figure 2 1
Erodibildy Factor K 024 Table 2 2 or Web Soil Survey (httpAsoildatamart nres usda gow)
Soil Type Pacolet Rion informational purposes only
STEP 2 Ditch Liner requirements Utilize the Required Liner tab and note recommendations on plans
STEP 3 Velocity Control Requirements
TYPE BROCK SILT CHECKS spaced at 142 feet Choose between Type l Rock Silt
Checks or Wa #des
OR WATTLES
See the HELP Tab for additional clarification and an example on how to place on plans
Start with Caption 5
OPTION 4 Using RUSLE2 Analysis to determine required storage
OPTION 4A For DRAINAGE AREA < 3 Acre Use V =CRKs to determine storage
Regression Constant C
659
Rainfall Factor R
160
Erodibdity Factor K
024 Frorn Step 1 above
Sod Type
Pacolet Rion
Ditchline Slope s
0 02000 Rift
V= 41501 ft /ac/yr
Required Storage Volume= 121 47 ft3 See Option 5
OPTION 4B For DRAINAGE AREA < 3 Acre Use RUSLE2 Modeling to determine storage
Sediment Delivery from RUSLE2 0 00 tons /acre /yr
Converting to ft3 /ac/yr N/A ft /ac/yr
Required Storage Volume= NA ft3 See Option 5
OPTION 4C Using the Required Storage Volume from Option 4A or 4B to determine # of Wrapped TRSGA/Wattles Required
These devices can be used to satisfy the velocity requirements in Step 3
Storage from Wrapped Type A Rock Silt Checks or Wattles Option of using Wrapped Type A Rock Sdi
Enter Ditch Front Slope Gradient (H V) ? 1 Checks or Wattics
Enter Ditch Back Slope Gradient (H V) 1 5 1
Enter Device Height 1 5 ft
Area Behind Device 3 94 fe
Length of Ditch Behind Device 75 00 ft 3 See Option 5
Storage Behind Device (assumes 651 effeciency) 63 98 ft
Wrapped TRSGA/Wattles required X Go to Option 5
Total NIA ft
(MMMFNTA Desioner still has the oot on of usino Option 5 or 6
USE 60 Day Option
USE Infiitrabon Basin
PAM will be added to the wattles
OPTION 6 Altematnre Designs
IMPORTANT Before using Option 6 be sure that the information in Step 1 Is accuratel
There may be cases where the RUSLE2 Analysis (Option 4) yields an excessive number of devices to achieve
storage requirements and site constraints disallow infiltration and skimmer basin (option 5) installation
Therefore it will be necessary to utilize the option below that best fits your situation The 60 Day Option
Is not available for projects involving HOW or Trout Waters
"The minimum basin size for a skimmer to function properly is 20 x10 If the basin dimensions are
less than this size an infiltration basin must be utilized regardless of dewatenng time
30 DAY OPTION 7
Under these circumstances it will be necessary to provide a minimum of 23 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 30 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which indicates that for any given 30 day period in NC the maximum amount of
Rainfall Energy that can be expected is 23 / of the annual total
In this situation
23 / of RUSLE2 Required Volume F-3-407 ft'
Design Depth (ft) s
Proposed Basin Side Slopes 1 5 1 side slopes
Infiltration Anaivsis
Web Sod Survey (http Hsoildatamart nres usda govn
Sat Hydraulic Con (Ksat micro
Soil Permeabd in /hr
Dewatering Time (Days)
NIA
Basin Design
Minimum 2 1 (L Ratio
Suggested To Width ft
3
4
Suggested Top Length (ft)
6
8
Final Design To Width ft
5
9
Final Design To Len ft
10
18
Final Design Depth ft
3
3
Weir Width ft
4
4
Skimmer Size (in)
Is
16
Orifice Diameter in
025
025
n
Dewateng Time (Days)
1
4
V city St rag (e°)
5250
OK
2 O 50
OK
m /sec 0 0 Skimmer Basm
0 00 Required
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
Wattles are required for Trout or HQW waters
60 DAY OPTION
Under these circumstances it will be necessary to provide a minimum of 43 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 60 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level 111 Reference Manual which indicates that for any given 60 day period in NC the maximum amount of
Rainfall Energy that can be expected is 43 / of the annual total
In this situation
43 / of RUSLE2 Required Volume F-6-370 ft3
Design Depth (ft) 3
Proposed Basin Side Slopes 1 5 1 side slopes
Infiltration Analysis
Web Sod Survey (http / /soildatamart nres usda govt
m /sec 11 2 Use Infiltration or
1 56 Skimmer Basm
10
Sat Hydraulic Con (Ksat micro
Soil Permeability m /hr
Dewatering Time (Days)
Basin Design
Minimum 2 1(L
149 Ratio
Suggested To Width ft
4
Suggested Top Length (ft)
8
Final Design To Width ft
9
Final Design To Length ft
18
Final Design Depth ft
3
Weir Width ft
4
Skimmer Size (in)
16
Orifice Diameter in
025
Dewatenng Time (Days)
4
IV rity Storage (fe)
2 O 50
OK
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
GENERAL NOTES
If the project involves HQW or Trout Waters wattles in conjunction with PAM (polyacrylamide) must be installed according
N �
�-
Sotoo
Printed Jan 24 2012
STEP 1 Input Project Information items in red are REQUIRED
SECTION 1 of 1
Construction time
Storage from Wrapped Type A Rock Silt Checks or Wattles
County
Alexander
1W
Enter Ditch Front Slope Gradient (H V)
< 6 months (YIN)? Y
1 Checks or Wattles
Enter Ditch Back Slope Gradient (H V)
15 1
HQW (YIN)? N
Elevation
Location
Trout (YIN)? N
Tool ft
Place measure(s) an EC Plan Start
Prepared By
; itmEmE 3
From Sta
50 + 00
Length of Ditch Behind Device
7500 ft
Date Prepared
t41
to Sta
1 51 + 50
up the a grade PAf1 should not be placed an
Level III A #
Epa
Right/Left Rt
No Elev Data
/
Level III A Ex irahon�
A Ditch Grade 2000
/
Reviewed B
Contributing
Date Reviewed
RNY Width 30
feet
Level III A#
Length of Run X 150
feet
Level III A Expiration
Disturbed Area = 010
acres
Drainage Area 062
acres
Drainage Area must equal or exceed the Disturbed Area found above
Surface Dewatering Device
N
Is this a Typical Section (YIN)?
Y
Will RUSLE2 be used to model
the Non Typical sections?
N
Regression Constant, C 659 Table 2 7 (Level 111 Ref Manual)
Rainfall Factor R 160 Figure 2 1
Erodibility Factor K 024 Table 2 2 or Web Soil Survey (http //soildatamart nres usda gow)
Soil Type Pacolet Rion informational purposes only
STEP 2 Ditch Liner requirements Utilize the Required Liner tab and note recommendations on plans
STEP 3 Velocity Control Requirements
Velocity control is not required
TYPE B ROCK SILT CHECKS spaced at N/A feet The outlet device from Option 4 5
OR WATTLES or 6 will be sufficient
See the HELP Tab for additional clarification and an example on how to place on plans
Start With Option 4A
OPTION 4 Using RUSLE2 Analysis to detennme required storage
OPTION 4A For DRAINAGE AREA < 3 Acre Use V=CRKs to determine storage
Regression Constant C 659
Rainfall Factor R 160
Erodibility Factor K 024 From Step 1 above
Soil Type Pacolet Rion
Ddchline Slope s 0 02000 ft/ft
V= 41501 ft /aGyr
Required Storage Volume= 42 87 ft3 Using 82 / of Rainfall Factor see note in cell
C4 hove on to Option 4C
OPTION 4B For DRAINAGE AREA < 3 Acre Use RUSLE2 Modeling to determine storage
Sediment Delivery from RUSLE2 0 00 tons /acretyr
Converting to ft3 /acJyr NIA ft /aGyr
Required Storage Volume= NIA ft3 See Option 4A
OPTION 4C Using the Required Storage Volume from Option 4A or46 to determine # of Wrapped TRSGA/Wattles Required
These devices can be used to satisfy the velocity requirements in Step 3
Storage from Wrapped Type A Rock Silt Checks or Wattles
Option of using Wrapped Type A Rock Silt
Enter Ditch Front Slope Gradient (H V)
2 1
1 Checks or Wattles
Enter Ditch Back Slope Gradient (H V)
15 1
Enter Device Height
1 5 it
3 94 ft
GOOD
Place measure(s) an EC Plan Start
Area Behind Device
with the first device as close to the outlet
Length of Ditch Behind Device
7500 ft
s
point possible and then space them evenly
Storage Behind Device (assumes 651 effeciency)
63 98 ft3
up the a grade PAf1 should not be placed an
Wrapped TRSC- A/Wattles required X
10
the Iasi BMP at outlet
Total 6398
ft
COMMENTS Designer still has the option of using
1 (18 ) wattles will be used for storage = (64 cu ft) and a 6x12x3 TRSD B = ( 81 cu ft) will also be used
Total storage = ( 145cu it)
PAM will be applied on the last wattle before the TRSD B
7ption 5 or 6
STEP 1 Input Project Information items in red are REQUIRED
Construction time
< 6 months (YIN)? Y
HQW (YIN)? N Elevation
Trout (YIN)? N Tool ft
From Sta 51 + 50
to Sta 1 54 + 00
Q fit
SECTION 1 of 1
Right/Left Rt
No Elev Data
/
Level III A Expiration WM Irurius III
A Ditch Grade 1 000
A
Reviewed B
Contributing
Date Reviewed
RNII Width 30
feet
Level III A #-
Length of Run X 250
feet
Level III A Expiration
Disturbed Area = 017
acres
Drainage Area 23
acres
Drainage Area must equal or exceed the Disturbed Area found above
Surface Dewatenng Device
Y
r Surface Dewatenng Device must be utilized Answer Y
Is this a Typical Section (Y /N)?
Y
Will RUSLE2 be used to model
the Non Typical sections?
N
Regression Constant, C 659 Table 2 7 (Level N Ref Manual)
Rainfall Factor R 160 Figure 2 1
Erodibility Factor K 024 Table 2 2 or Web Soil Survey (http Asoddatamart nres usda gow)
Soil Type Pacolet Rion informational purposes only
STEP 2 Ditch Liner requirements Utilize the Required Liner tab and note recommendations on plans
STEP 3 Velocdy Control Requirements
Velocity control is not required
TYPES ROCK SILT CHECKS t spaeedat NIA feet The outlet device from Option 4 5
OR WATTLES or 6 will be Sufcient
See the HELP Tab for additional clarification and an example on how to place on plans
Mart with Option 5
OPTION 4 Using RUSLE2 Analysis to determine required storage
OPTION 4A For DRAINAGE AREA < 3 Acre Use V=CRKs to determine storage
Regression Constant C 659
Rainfall Factor R 160
Erodibildy Factor K 024 From Step t above
Sod Type Pacolet Rion
Ditchline Slope s 0 01000 Rift
V= 20761 ft /ac/yr
Required Storage Volume= 35 73 ft3 Sae Option 5
OPTION 4S For DRAINAGE AREA < 3 Acre Use RUSLE2 Modeling to determine storage
Sediment Delivery from RUSLE2 0 00 tons/acre/yr
Converting to ft3 /aclyr N/A ft /ac/yr
Required Storage Volume= F N/A ft3 See Option 5
OPTION 4C Using the Required Storage Volume from Option 4A or 46 to determine # of Wrapped TRSC- ANYattles Required
These devices can be used to satisfy the velocity requirements in Step 3
Storage from Wrapped Type A Rock Silt Checks or Wattles Option of using Wrapp d Type A Rock Silt
Enter Ditch Front Slope Gradient (H %0 2 1 Checks or Wattles
Enter Ditch Back Slope Gradient (H 10 15 1
Enter Device Height 1 5 ft
Area Behind Device 3 94 ftz
Length of Ditch Behind Device 150 00 ft3 See Option 5
Storage Behind Device (assumes 651 effeciency) 127 97 ft
Wrapped TRSC- A/WaWes required X Go to Option 5
Total N/A ft,
COMMENTS
Infiltration Basin
will be applied on the last wattle before the TRSD B
5or6
OP77ON 6 Aitemabve Designs
IMPORTANT Before using Option 6 be sure that the information In Step 1 is accurate!
There may be cases where the RUSLE2 Analysis (Option 4) yields an excessive number of devices to achieve
storage requirements and site constraints disallow infiltration and skimmer basin (option 5) installation
Therefore it will be necessary to utilize the option below that best fits your situation The 60 Day Option
Is not available for projects involving HOW or Trout Waters
"The minimum basin size for a skimmer to function properly is 20 x10 If the basin dimensions are
less than this size an infiltration basin must be utilized regardless of dewatering time
30 DAY OPTION
Under these circumstances it will be necessary to provide a minimum of 23 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 30 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level ill Reference Manual which indicates that for any given 30 day period in NC the maximum amount of
Rainfall Energy that can be expected is 23 / of the annual total
In this situation
23/ of RUSLE2 Required Volume
Design Depth (ft)
Proposed Basin Side Slopes
Infiltration Analvsis
10 02 ft3
3 �
1 5 1 side slopes
Web Soil Survey (http / /soildatamart.nres usda gov/)
Sat Hydraulic Con (Ksat micro
Sod Permeability m /hr
Dewaterm Time (Days)
Basin Design
Minimum 2 1(L W) Ratio
Suggested To Width ft
2
Suggested Top Length (it)
4
Final Design To Width ft
5
Final Design To Length ft
10
Final Design De ft
3
Weir Width ft
4
Skimmer Size (in)
15
Orifice Diameter in
025
Dewaterin Time (Days)
1
Verify Storage (ft')
5250
OK
m /sec 0 0 Skimmer Basin
0 00 Required
N/A
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
Wattles are required for Trout or HQW waters
60 DAY OPTION
Under these circumstances it will be necessary to provide a minimum of 43 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 60 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which indicates that for any given 60 day period in NC the maximum amount of
Rainfall Energy that can be expected is 43 / of the annual total
In this situation
43 / of RUSLE2 Required Volume 18 74 ft'
Design Depth (ft) 3
Proposed Basin Side Slopes 1 5 1 side slopes
Infiltration Analvsis
Web Soil Survey (http / /soildatamart nres usda govn
m /sec 11 2 Use Infiltration or
1 56 Skimmer B3sm
10
Sat Hydraulic Con Ksat micro
Soil Permeability m1hr
Dewatering Time (Days)
Basin Design
Minimum 2 1(L K9 Ratio
Suggested To Width ft
2
Suggested Top Length (ft)
4
Final Design To Width ft
9
Final Design To Length ft
18
Final Design Depth ft
3
Weir Width ft
4
Skimmer Size (in)
Is
Orifice Diameter in
025
Dewatering Time (Days)
4
Verify Storage (ft')
20250
OK
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
GENERAL NOTES
If the project involves HQW or Trout Waters wattles in conjunction with PAM (polyacrylamide) must be installed according
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-ram-
STEP 1 Input Project Information items in red are REQUIRED
SECTION 1 of 1
Construction time
County
Alexander
5 6 months (YIN)? Y
HC1W (YIN)? N
Elevation
Location
Trout (YIN)? N
Tool ft
Prep aged B
G�A[t4
From Sta
54 -00
Date Prepared
i9
to Sta
1 56 + 50
Level III A #
RightlLeft Rt
No Elev Data
/
Level III A Ex crab n
°/ Ditch Grade 1 000
A
Reviewed B
Contributing
Date Reviewed
RNII Width 30
feet
Level III A#
Length of Run X 250
feet
Level III A Expiration
Disturbed Area = 017
acres
Drainage Area 222
acres
Drainage Area must equal or exceed the Disturbed Area found above
Surface Dewatenng Device
Y
Surface Dewatering Device must be utilized Answer Y
Is this a Typical Section (YIN)?
Y
Nil RUSLE2 be used to model
the Non Typical sections?
N
0 1?,.L
Regression Constant, C 659 Table 2 7 (Level /I/ Ref Manual)
Rainfall Factor R 160 Figure 2 1
Erodibildy Factor K 024 Table 2 2 or Web Sod Survey (htipAlsoddatamart nres usda gow)
Soil Type Pacolet Rion informational purposes only
STEP 2 Ditch Liner requirements Utilize the Required Liner tab and note recommendations on plans
STEP 3 Velocity Control Requirements
Velocity control is not required
TYPE B ROCK SILT CHECKS spacedat N/A feet The outlet device from Option 4 5
OR WATTLES or 6 will be sufficient
See the HELP Tab for additional clarification and an example on how to place on plans
Start with Option 5
OPTION 4 Using RUSLE2 Analysis to determine required storage
OPTION 4A For DRAINAGE AREA < 3 Acre Use V =CRKs to determine storage
Regression Constant C 659
Rainfall Factor R 160
Erodibility, Factor K 024 From Step 1 above
Sod Type Pacolet Rion
Ditchline Slope s 0 01000 11/11
V= 20761 It /ac/yr
Required Storage Volume= F 3573 113 See Option 5
OPTION 4B For DRAINAGE AREA < 3 Acre Use RUSLE2 Modeling to determine storage
Sediment Delivery from RUSLE2 0 00 tons /acre/yr
Converting to ft3/aclyr N/A ft' /aclyr
Required Storage Volume= F NIA 113 See Option 5
OPTION 4C Using the Required Storage Volume from Option 4A or 4B to determine # of Wrapped TRSC- A/Wattles Required
These devices can be used to satisfy the velocity requirements in Step 3
Storage from Wrapped Type A Rock Silt Checks or Wattles Option of using Wrapped Type A Rock Silt
Enter Ditch Front Slope Gradient (H VJ 2 1 Checks or Wattles
Enter Ditch Back Slope Gradient (H to 1 5 1
Enter Device Height 1 5 It
Area Behind Device 3 94 fe
Length of Ditch Behind Device 150 00 ft
Storage Behind Device (assumes 651 et7eclency) 127 97 113 See Option 5
Wrapped TRSC- A/Wattles required X Go to Option 5
Total N/A ft
COMMENTS Designer still has the option of using
USE 60 Day Option
USE Infiltration Basin
PAM will be applied on the last wattle before the TRSD B
Dpuon 5 or 6
OPTION 6 Alternative Designs
IMPORTANT Before using Option 6 be sure that the information in Step 1 is accurate!
There may be cases where the RUSLE2 Analysis (Option 4) yields an excessive number of devices to achieve
storage requirements and site constraints disallow infiltration and skimmer basin (option 5) installation
Therefore it will be necessary to utilize the option below that best fits your situation The 60 Day Option
Is not available for projects involving HOW or Trout Waters
—The minimum basin size for a skimmer to function properly Is 20 x10 If the basin dimensions are
less than this size an infiltration basin must be utilized regardless of dewatenng time
30 DAY OPTION
Under these circumstances it will be necessary to provide a minimum of 23 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 30 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which indicates that for any given 30 day penod in NC the maximum amount of
Rainfall Energy that can be expected is 23 / of the annual total
In this situation
23 / of RUSLE2 Required Volume
Design Depth (ft)
Proposed Basin Side Slopes
Infiltratinn Analvsis
10 02 ft3
3 �
1 5 1 side slopes
Web Soil Survey (htt / /soildatamart nres usda gov
m/S;_0_1 00 Skimmer Basin
000 Required
N/A
Sat Hydraulic Con (Ksat micr o
Sod Permeability m /hr
Dewatering Time (Days)
Basin Design
Minimum 2 1(L W/ Ratio
Suggested Top Width ft
2
Suggested Top Length (ft)
4
Final Design Top Width ft
5
Final Design Top Length ft
10
Final Design Depth ft
3
Weir Width ft
4
Skimmer Size (in)
15
Orifice Diameter m
025
Dewatering Time (Days)
1
Verity Storage (ft ►
5250
PAM must be Introduced by a minimum of 1 Wrapped Type A Rock Slit Check or Wattle upgrade from this outlet device
Wattles are required for Trout or HOW waters
60 DAY OPTION
Under these circumstances it will be necessary to provide a minimum of 43 / of the storage calculated using
the RUSLE2 analysis (Option 4) during the Clearing and Grubbing Phase This section must then be permanently
stabilized within 60 days from the time clearing and grubbing begins This is derived from Table 2 1
of the Level III Reference Manual which indicates that for any given 60 day period in NC the maximum amount of
Rainfall Energy that can be expected is 43 / of the annual total
In this situation
43 / of RUSLE2 Required Volume F-1874 ft3
Design Depth (ft) 3 .
Proposed Basin Side Slopes 1 5 1 side slopes
Infiltrnfinn Analvsis
Web Soil Survey (http / /soildatamart nres usda govO
misec 12 5 Use infdtratio i or
1 75 Skimmer Basin
09
Sat Hydraulic Con (Ksat micro
Sod Permeability m /hr
Dewaterin Time (Days)
Basin Design
Minimum 2 1 (L K9 Ratio
Suggested To Width ft
2
Suggested Top Length (ft)
4
Final Design To Width ft
9
Final Design To Length ft
18
Final Design De ft
3
Weir Width ft
4
Skimmer Size (in)
15
Orifice Diameter in
025
Dewatering Time (Days)
4
Verify St rage (ft )
20250
OK
PAM must be introduced by a minimum of 1 Wrapped Type A Rock Silt Check or Wattle upgrade from this outlet device
'N`ete,�nTtheTEC�I'lan whether�th700003, R *JIR is use��
GENERAL NOTES
If the project involves HOW or Trout Waters wattles in conjunction with PAM (polyacrylamide) must be installed according
rt *-J, • q
1!
, A r"
IWWS
.4y
i4
STEP f Input Project Information items in red are REQUIRED
Construction time
< 6 months (YIN)? Y
HQW (YIN)? N Elevation
Trout (YIN)? N Tool ft
From Sta 58 + o0
rom
SECTION 1 of 1
to Sta 1 57 + 50
Storage from Wrapped Type A Rock Silt Checks or Wattles
Level ui A IF 11M
Right/Left Rt
No Elev Data
/
Level III A Ex irabon
/ Ditch Grade 4 000
A
Reviewed B
Contributing
15 ft
Date Reviewed
RiW Width 30
feet
Level III A #
GOOD Place measure(s) on EC Plan Start
Length of Run X 50
feet
Level III A Expiration
Disturbed Area = 003
acres
Drainage Area 01
acres
Drainage Area must equal or exceed the Disturbed Area found above
Surface Dewatenng Device
N
EEI
Is this a Typical Section (YIN)?
Y
10,
Will RUSLE2 be used to model
the fast BMP at outlet
the Non Typical sections?
N
Regression Constant C 659 Table 2 7 (Level 111 Ref Manual)
Rainfall Factor R 160 Figure 2 1
Erodibility Factor K 024 Table 2 2 or Web Soil Survey (http✓/solldatamart nres usda govl)
Soil Type Pacolet Rion informational purposes only
STEP 2 Ditch Liner requirements Utilize the Required Liner tab and note recommendations on plans
STEP 3 Velocity Control Requirements
Velocity control is rot required
TYPE B ROCK SILT CHECKS spaced at N/A feet The outlet d vice from Option 4 5
OR WATTLES or 6 will be sufficient
See the HELP Tab for additional clarification and an example on how to place on plans
Start with Option 4A
OPTION 4 Using RUSLE2 Analysts to determine required storage
OPTION 4A For DRAINAGE AREA < 3 Acre Use V=CRKs to determine storage
Regression Constant C 659
Rainfall Factor R 160
Erodibility Factor K 024 From Step 1 above
Soil Type Pacolet Rion
Ditchline Slope s 0 04000 fllft
V= 83002 It /ac/yr
Required Storage Volume= 28 58 ft3 Us ng 82 / of Rainfall Factor see note in cell
C4 Move on to Option 4C
OPTION 4B For DRAINAGE AREA < 3 Acre Use RUSLE2 Modeling to determine storage
Sediment Delivery from RUSLE2 0 00 tons/acre/yr
Converting to 113laclyr NIA ft /ac/yr
Required Storage Volume= F NIA ft" See Option 4A I
OPTION 4C Using the Required Storage Volume from Option 4A or 4B to determine # of Wrapped TRSGA/Watt /es Required
These devices can be used to satisfy the velocity requirements in Step 3
Storage from Wrapped Type A Rock Silt Checks or Wattles
Option of using Wrapped Type A Rock Silt
Enter Ditch Front Slope Gradient (H V)
2 1
' Checks or Wattles
Enter Ditch Back Slope Gradient (H V)
15 1
Enter Device Height
15 ft
3 94 �
GOOD Place measure(s) on EC Plan Start
Area Behind Device
with the first device as clo a to the outlet
Length of Ditch Behind Device
37 50 ft
Point possible and then spaces them evenly
Storage Behind Device (assumes 651 effeciency)
31 99 It'
up the a grade PAM should not be placed on
Wrapped TRSC- A/Wattles required X _ _
10,
the fast BMP at outlet
Total 3199
ft
rf%m"cmTe
ne.Qmnef still has the ontion of usino Option 5 or 6
2 (18 ) wattles will be used for storage = (64 cu ft) and a 6x12x3 TRSD -B = (81 cu ft) will also be used
Total storage = (145 cu ft )
PAM will be applied on the last wattle before the TRSD B
i— STEP! Input Project Information items in red are REQUIRED
Construction time
< 6 months (YIN)? Y
HflW (Y /N)? N Elevation
Trout (YIN)? N Tool
From Sta 1 58 + 00
SECTION 1 of 1
to Sta 1 57 + 50
Storage from Wraaoed Type A Rock Silt Checks or Wattles
Level 111 A # IYm
RighULeft Lt
No Elev Data
/
Level III A Ex matron
/ Ditch Grade 4 000
/
Reviewed B
Contnbubng
15 it
Date Reviewed
RM Width 30
feet
Level 111 A #
GOOD Place measure(s) on EC Plan Sian
Length of Run X 50
feet
Level III A Expiration
Disturbed Area = 003
acres
Drainage Area 04
acres
Drainage Area must equal or exceed the Disturbed Area found above
Surface Dewatenng Device
N
Is this a Typical Section (YIN)?
Y
10
Will RUSLE2 be used to model
time last BMP at outlet
the Non Typical sections?
N
Regression Constant C 659 Table 2 7 (Level 111 Ref Manual)
Rainfall Factor R 160 Figure 2-1
Erodibility Factor K 024 Table 2 2 or Web Soil Survey (http Asoddatamart nres usda gow)
Soil Type Pacolet Rion informational purposes only
STEP 2 Ditch Liner requirements Utilize the Required Liner tab and note recommendations on plans
STEP 3 Velocity Control Requirements
Veloc.iiy control is not required
TYPE BROCK SILT CHECKS spaced at N/A feet Th outlet device from Option 4 5
OR WATTLES or 6 will be sufficient
See the HELP Tab for additional clarification and an example on how to place on plans
Start with Option 4A
OPTION 4 Using RUSLE2 Analysis to determine required storage
OPTION 4A For DRAINAGE AREA < 3 Acre Use V =CRKs to determine storage
Regression Constant C 659
Rainfall Factor R 160
Erodibility Factor K 024 From Step I above
Soil Type Pacolet Rion
Ditchline Slope s 0 04000 ft/ft
V= 83002 ft /ac/yr
Required Storage Volume= 28 58 ft3 Using 82 / of Rainfall Factor see note in cell
C4 Move on to Option 4C
OPTION 4B For DRAINAGE AREA < 3 Acre Use RUSLE2 Modeling to determine storage
Sediment Deliveryfrom RUSLE2 0 00 tons/acrelyr
Converting to ft3 /ac/yr N/A It /actyr
Required Storage Volume= F N/A ft3 See Option 4A
OPTION 4C Using the Required Storage Volume from Option 4A or4B to determine # of Wrapped TRSGA/Wattles Required
These devices can be used to satisfy the velocity requirements in Step 3
Storage from Wraaoed Type A Rock Silt Checks or Wattles
Option of using Wrapped Type A Rock Silt
Enter Ditch Front Slope Gradient (H V)
2 1
Checks or Wattle
Enter Ditch Back Slope Gradient (H V)
15 1
Enter Device Height
15 it
i
3 94 ftz
GOOD Place measure(s) on EC Plan Sian
Device
Area Behind De
with the first device as close to the outlet
Device
Length of Ditch Behind De
37 50
Point possible and then space them evenly
Storage Behind Device (assumes 651 effeciency)
31 99 ft3
up the a grade PAM should not be placed on
Wrapped TRSC- A/Wattles required X
10
time last BMP at outlet
Total 3199
ft '
PnRARX=nrrc
nesinner still has the ontion of usino Ootion 5 or 6
2(18 ) wattles will be used for storage = ( 64 cu ft ) and a 6xl2x3 TRSD B = ( 81 cu ft) will also be used
Total storage = (145 cu ft )
PAM will be applied on the last wattle before the TRSD B
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