Bridge 59 in Moore County

November 4, 2013
Mr. Kevin Thomas
Lynn Thomas Grading
230 Rocky River Church Road
Polkton, North Carolina 28135
Reference: Wetland Determination and Endangered Species Survey
Proposed Borrow Site
Glendon-Carthage Road
Moore County, North Carolina
ECS Project 09-23529
Dear Mr. Thomas:
ECS Carolinas, LLP (ECS) is pleased to submit this report of the jurisdictional waters/wetland
determination/endangered species survey for the site located west of Glendon-Carthage Road
in Moore County, North Carolina. This report summarizes our findings for the site.
Background
ECS was contracted to determine if waters of the U.S. (including wetlands) or endangered species
are present on the site located west of Glendon-Carthage Road in Moore County, North Carolina
(Figure 1). The site contains wooded land that appears to have been recently timbered. Access
roads are located near the eastern and southern site boundaries and cross the central portion of
the site. Vegetation including pine, sweet gum and other mixed grasses/weeds are located
within the proposed pit boundaries. The proposed borrow pit is approximately 11.04 acres in
size, based on global positioning system (GPS) measurements. Adjacent properties consist of
Glendon-Carthage Road and wooded land.
Wetlands are defined by the U.S. Army Corps of Engineers and the United States
Environmental Protection Agency as “those areas that are inundated or saturated by surface or
groundwater at a frequency and duration sufficient to support, and under normal circumstances,
do support a prevalence of vegetation typically adapted for life in saturated soil conditions.” In
order for an area to be classified as wetland, hydrophytic vegetation, hydric soils, and wetland
hydrology indicators must be present.
Literature Review
We reviewed the USGS Topographic Map and the Soil Survey of Moore County for the site.
The USGS Topographic Map (Figure 1) does not identify surface waters or wetlands on the
site. The map depicts Lick Creek approximately 940 feet north of the site and an unnamed
tributary to McClendons Creek approximately 940 feet south of the site.
The Soil Survey of Moore County (Figure 2) shows soils on the site have been mapped as
Creedmoor fine sandy loam (CrB) and Mayodan fine sandy loam (MdB). The Creedmoor series

Proposed Borrow Site
Glendon-Carthage Road
Moore County, North Carolina
ECS Project 09-23529
November 4, 2013
consists of moderately well to somewhat poorly drained, very slowly permeable soils that occur
on piedmont uplands. The Mayodan series consists of well drained, moderately permeable
soils that occur on piedmont uplands. The identified soil mapping units are not identified on the
Hydric Soils List for Moore County.
Site Reconnaissance
ECS personnel conducted the site visit on November 1, 2013. The site contains wooded land
that appears to have been recently timbered. Access roads are located near the eastern and
southern site boundaries and cross the central portion of the site. Vegetation including pine,
sweet gum and other mixed grasses/weeds are located within the proposed pit boundaries. The
proposed borrow pit is approximately 11.04 acres in size, based on GPS measurements.
Figure 3 shows the borrow pit corners, including their coordinates, as located with a Trimble
GPS unit.
During our reconnaissance, we observed the site for evidence of stream channels, wetlands
and ponds. There are no streams, ponds or wetlands located in the proposed pit. The soils are
bright and well drained. There is no evidence of groundwater discharge in the proposed borrow
site. A Wetland Determination Data Form containing field observations at the lowest lying area
of the proposed borrow pit, that supports our opinion, is included as an Attachment.
We also observed adjoining properties during our reconnaissance. Adjoining properties consist
of Glendon-Carthage Road and wooded land. Vegetation in the wooded land located on
adjoining properties appeared to be planted pines for timber production. We did not observe
streams or wetlands within 400 feet of the borrow site.
Catch basins and erosion control fencing will be used to prevent impacts to off-site streams,
wetlands and ponds. A reclamation plan is currently being designed for the site. Based on our
observations, the proposed project will not impact off-site streams, ponds or wetlands.
Endangered Species Survey
We reviewed the North Carolina Natural Heritage Program list for federally listed threatened and
endangered species that have been identified on the Putnam, North Carolina Quadrangle (the
quadrangle that contains the site).
No federally listed threatened and endangered species have been identified on the site
quadrangle. Based on our observations and to the best of our knowledge, the proposed project
will not impact federally protected species or areas that may be considered potential habitat for
federally protected species.
State Historic Preservation Office (SHPO)
ECS submitted a request to SHPO on November 1, 2013 to determine if they are aware of
historic resources that could be affected by the project. The SHPO response will be mailed to
Mr. Kevin Thomas of Lynn Thomas Grading.
2

Proposed Borrow Site
Glendon-Carthage Road
Moore County, North Carolina
ECS Project 09-23529
November 4, 2013
Watershed Classification/Buffer Requirements
Lick Creek is located approximately 940 feet north of the site and an unnamed tributary to
McClendons Creek is located approximately 940 feet south of the site. According to the North
Carolina Division of Water Resources, the site is located in an area of the Cape Fear River
watershed that has been designated as Class C waters.
Water Table
The project will consist of borrowing material from a ridge and leveling it consistent with existing
topography of the immediate surrounding conditions. There will be no dewatering, mining or
excavating below the seasonal high water table or nearby streams or wetlands. Therefore, the
existing water table will not be impacted by the proposed project.
Recommendations
The site is being evaluated for use as a borrow pit. Based on the findings of this study, it is our
opinion that the project will not impact streams, wetlands or federally listed endangered or
threatened species/associated habitat. Best management practices, including the construction
of catch basins and the use of erosion control fencing, will be used to prevent sediment from
running off the site and impacting off-site streams and wetlands.
Closing
We appreciate the opportunity to provide our services to you. Please contact us at (336) 856-
7150 if you have questions or require additional information.
Sincerely,
ECS CAROLINAS, LLP
Bradley S. Luckey Michael T. Brame, PWS
Environmental Project Manager Environmental Principal
Attachments: Figure 1 - Site Location Map
Figure 2 - Soil Map
Figure 3 - GPS Map
Wetland Determination Data Form
3

SITE
SOURCE:
FIGURE 1
SITE LOCATION MAP
USGS TOPOGRAPHIC MAP
PROPOSED 11.04 ACRE BORROW PIT
PUTNAM, NC QUADRANGLE
GLENDON-CARTHAGE ROAD
DATED 1974
MOORE COUNTY, NORTH CAROLINA
CAROLINAS
SCALE 1”=2,000’
ECS PROJECT NO. 09-23529

LEGEND
Approximate Site Boundary
SOURCE:
FIGURE 2
SOIL MAP
USDA SOIL SURVEY OF
PROPOSED 11.04 ACRE BORROW PIT
MOORE COUNTY
GLENDON-CARTHAGE ROAD
FROM NCSS WEBSITE
MOORE COUNTY, NORTH CAROLINA
CAROLINAS
SCALE: 1”= 750’
ECS PROJECT NO. 09-23529

LEGEND
Corner #EastingNorthing
626103.41880274.
1
Proposed Borrow Pit
77081
GPS Point
2626255.11880300.
20207
1
Corner Number
3626365.01880263.
35708
626513.41880186.
4
79857
625938.21880867.
5
67696
6626739.11880928.
20334
626661.71881147.
7
22032
US State Plane 1983 North Carolina 3200 NAD
6
1983 (Conus), shown in US Survey Feet
7
4
3
2
1
5
FIGURE 3
GPS MAP
SOURCE:
PROPOSED 11.04 ACRE BORROW PIT
GOOGLE EARTH
GLENDON-CARTHAGE ROAD
AERIAL PHOTOGRAPH, DATED 2011 AND
MOORE COUNTY, NORTH CAROLINA
GPS OF WASTE PIT CORNERS
CAROLINAS
ECS PROJECT NO. 09-23529
SCALE: 1”= 210’

12/11/08
Reclamation Plan for Contracted Projects
Borrow Pit
Date:
Pdupcfs41-3124
Contract Number: TIP No:
D313:54
Project #/ WBS Element: County:
28CQ/9/S/68Nppsf
Contractor: Responsible Person:
MzooUipnbtHsbejoh-Jod/
LfwjoUipnbt
Contractor Address:
341SpdlzSjwfsDivsdiSpbeQpmlupo-OD39246

Property Owner: Phone Number:
:21.54:.9239
KpseboUjncfsmboet-Jod/
Property Owner Address:
QPCpy:9NpvouHjmfbe-OD38417
Borrow Pit
3211Hmfoepo.DbsuibhfSpbe
Property Address:
Hmfoepo-OD38362.8892
22/15
Total acreage of proposed pit:
Expected depth of excavation:
21(
Present use of land:
Ujncfs
Proposed use after reclamation:
Ujncfs
Proposed sequence of excavation (include amount of clearing & proposed slope rates):
Dmfbs'HsvcTjuf/JotubmmfsptjpoDpouspmEfwjdft/Tusjq0tupdlqjmfupqtpjm/FydbwbufCpsspx/Bmmtmpqftxjmmcf3;2psGmbuufs/
Sf.tqsfbeUpqtpjm/Qfsnbofoutffebmmejtuvscfebsfbt/Bmmtjmju0tljnnfscbtjotxjmmcfnbjoubjofeboedmfbofepvuxifo203gvmm/
Did the Environmental Evaluation indicate the presence of any wetlands or endangered
species?(if yes, briefly list findings and indicate physical means by which buffer zone will be
delineated):
Op/
Is any portion of the pit or access & haul roads within a watershed with riparian buffer zone
requirements? (if yes, indicate physical means by which buffer will be delineated and how
diffuse flow into the buffer zone will be maintained):
Op/
Reclamation Procedures for Borrow/Waste/Staging Areas for Contracted Projects 12/11/08 11

12/11/08
Is the site adjacent to High Quality Waters as defined by the Department of Environment and
Natural Resources? (if yes, note how the devices have been designed to meet DENR
requirements):
Op
Are there any conditions identified on the State Historic Preservation Office Review Form for
borrow activities? Explain:
Op/
Describe the intended plan for the reclamation and subsequent use of all affected lands, and
indicate the general methods to be used in reclaiming this land, including any stockpile areas,
haul roads and ditches. Describe the sequence for reclaiming the pit. Attach a map which
illustrates this plan, showing the location and design of all temporary and permanent erosion
control devices. All features shall comply with the appropriate specifications, standards and
reflect Best Management Practices (BMP). The plan shall indicate setbacks to adjacent
properties, buffer zones and if de-watering is required and the pit is located within the 15
county region of the CCPCUA, the GPS coordinate location of any well located within 1500
ft. of the pit.
Upqtpjmxjmmcftusjqqfeboesf.tqsfbe/Ibvmspbexjmmvujmj{fufnqpsbszdpotusvdujpofousbodf/
Cpsspxqjuxjmmvujmj{fgpvsufnqpsbszspdltfejnfouebnUzqf.C(t-Ufnq/TjmuEjudiftboeejwfstjpotupdpouspmfsptjpo/
Ejtuvscfebsfbtxjmmcfqfsnbofoutffefeboetubhfttffefebtoffefe/
Tupdlqjmfenbufsjbmxjmmcftffefe/
TjmuGfodfxjmmcfvtfeupqspufdutupdlqjmfboebtoffefeuispvhiqju/
Will excavation extend below the water table? (If yes, see a, b, & c, below):
Op
a) Specify how de-watering will be accomplished. Include proposed method of reducing
effluent turbidity so that it meets the requirements of the Division of Water Quality. Show any
pit dewatering basins, construction details, and calculations on the plan:
O0B
b) If the pit is within the Central Coastal Plain Capacity Use Area, list the person responsible
for completing The Division of Water Resources CCPCUA spread sheet and method of
submission to the Resident Engineer:
O0B
Reclamation Procedures for Borrow/Waste/Staging Areas for Contracted Projects 12/11/08 12

12/11/08
c) If water is to remain in the pit after completion, state the estimated depth of the water. (At
least a depth = 4 ft.). Indicate the water table depth prior to beginning excavation and the
method used to obtain this information:
O0B
Describe the proposed schedule of permanent seeding and mulching. Detail the frequency of
permanent seeding and mulching. Note that a permanent stand of vegetation is required prior
to a final inspection:
Podfcpsspxpqfsbujpotbsfdpnqmfufboeupqtpjmjtsf.tqsfbe-uifejtuvscfebsfbxjmmcfqfsnbofoutffefeboenvmdife/
Sfqbjstffe'nvmdixjmmcfvujmj{febtsfrvjsfeupfotvsfqfsnbofoutuboepgwfhfubujpo/
Reclamation Procedures for Borrow/Waste/Staging Areas for Contracted Projects 12/11/08 13

12/11/08
Property Owner’s Statement for Borrow Site
:
I hereby certify that I am in agreement with this development, use, and reclamation plan, and
any exceptions noted when approved by the Engineer, and that I understand that I will be
responsible for the site upon completion of its use in the construction of the project noted in
the map legend. I understand that this plan, when approved, will serve as a guide in
controlling erosion and sediment in accordance with the Mining Act and the Sediment and
Pollution Control Act and as enforced by the North Carolina Department of Environment and
Natural Resources (DENR). I understand that any work exceeding the minimum necessary for
compliance with DENR requirements, should be negotiated between the Contractor and the
Property Owner. My signature below authorizes The Department of Transportation (DOT),
the Department of Environment and Natural Resources (DENR) or its agents, to enter upon my
property for a period of one year from the date of final acceptance of the project for which this
site plan is executed. If necessary, the DOT will be allowed to have the Contractor repair any
areas that are not in compliance with DENR requirements. After a one year inspection is held,
I will be solely responsible for assuring that the site is in compliance with DENR regulations. I
have the right to change the condition of the site after the final inspection and prior to the one
year follow-up inspection. However, if I make such changes, I acknowledge that DOT is
released from all obligations and conditions of this agreement and I will become solely
responsible for the condition of the site beginning on the date that I change the final inspection
condition.
Signatures:
Contractor’s Representative:
(authorized to sign supplemental agreements/date)
Owners of Record:
Witness Owner

(signature/date) ( signature/date)

(signature/date) (signature/date)

(signature/date) (signature/date)
Resident Engineer:
(signature /date)
Exceptions:
Concurrence with exceptions:
Property Owner: Contractor:
(signature/date) (signature/date)
Attachments: Site map with details
Environmental Evaluation
Cc:
Reclamation Procedures for Borrow/Waste/Staging Areas for Contracted Projects 12/11/08 14

SITE
PlansPrearedB:
py
CalculatedBy:
MooreCountyBridgeReplacements
Date:
DrawnB:
y
LOCATIONMAP
Date:
Robbins,NorthCarolina
CheckedB
:
y
Date:
MooreCounty
KevinThomas
RevisionNo.:

HaulRoadouttoGlendon
CarthageRoad
Utilize
ConstructionEntrance(s)asNecessary
Ensurepropersightdistanceatendof
HaulRoad
PlansPrearedB:
py
CalculatedBy:
MooreCountyBridgeReplacements
Date:
DrawnB:
y
Erosion&SedimentControlPlan
Date:
Robbins,NorthCarolina
CheckedB:
y
Date:
MooreCounty
KevinThomas
RevisionNo.:

PlansPrearedB:
py
CalculatedBy:
NCDOTBridge#59
Date:
DrawnB:
y
ApplicableStandardDrawings
Date:
Robbins,NorthCarolina
CheckedB:
y
Date:
MooreCounty
KevinThomas
RevisionNo.:

PlansPrearedB:
py
CalculatedBy:
NCDOTBridge#59
Date:
DrawnB:
y
ApplicableStandardDrawings
Date:
Robbins,NorthCarolina
CheckedB:
y
Date:
MooreCounty
KevinThomas
RevisionNo.:

APPENDIX
SupportingDataandCalculationsFor:
LeeConstruction
MooreCountyBridgeReplacements
TownofRobbins
MooreCounty,NC
October30,2013

BASIN1
PROJECT:NCDOTBridge#59
DESCRIPTION:Bridge#59
SUBJECT/TASK:CalculateStormwaterRunoff&SizeTreatmentSystemforBorrowPit
CALCULATEDBY:
DATE:10/30/2013
Objective:
CalculateStormwaterRunoffatproposedborrow/wastepitthenselectandsizetheappropriate
erosioncontrolBMP's.
30.385
CalculateTimeofConcentration(t)t
=\[L/H\]/128(Malcom)
cc
L=525Ft.Hydrauliclengthofwatershed
H=17Ft.Elevationchangealonglength
t=Minimumt=5minutes
3.6Minutes
cc
t(min)=UseMinimumt:
5.0Minutes
cc
CalculatePeakFlowRate(Q)Q=CiA
ImerviousArea
p
*RationalCoefficientTable1.6NCDOTDesignManual
C=0.9
*RainfallIntensityAppendixANCDOTDesignManual
i=7.84in/hr
Fayetteville,NC10yr,5MinuteStorm
DrainageArea,Impervious
A=0AC
=
Q
0CFS
Imp
PerviousArea
*RationalCoefficientTable1.6NCDOTDesignManual
C=0.5
*RainfallIntensityAppendixANCDOTDesignManual
i=7.84in/hr
Fayetteville,NC10yr,5MinuteStorm
DrainageArea,Pervious
A=2.29AC
Q=
8.9768CFS
Per
Q=
8.9768CFS
10Total
DrainageArea=2.29ACSelectTemp.RockSedimentDamTYBBasin
*(NCDOTBMPSelection&DesignCriteriaChart)

BASIN1Pg.2
CalculateBasinDesignMinimums
StorageVolume=3600CF/AC*NCDOTGuidelines
Min.Capacity=8244CF
435Q
SurfaceArea=SF*NCDOTGuidelines
10
Min.SurfaceArea=3904.908SF
SizeSelectedBMPBasin
TopDimensions*BottomDimensions
Length:90FtLength:78
Width:45FtWidth:33
Depth:3Ft(AtWeir)*Min2:1(L:W)Ratio
SideSlopes:2:1(H:V)
BasinSizeis:
SURFACEAREA=4050SFGood
BasinVolumeis:
9864Good
RETENTIONVOLUME=
SizeoutletWeir
WidthofWeir:8Ft*NCDOTDesignManual
COMPLETEDSTORMWATERBASINDESIGN
BasinSize:90Ftx45Ftx3Ft
BasinDrainageArea:2.29AC
WidthofWeir:8FT

BASIN2
PROJECT:NCDOTBridge#59
DESCRIPTION:Bridge#59
SUBJECT/TASK:CalculateStormwaterRunoff&SizeTreatmentSystemforBorrowPit
CALCULATEDBY:
DATE:10/30/2013
Objective:
CalculateStormwaterRunoffatproposedborrow/wastepitthenselectandsizetheappropriate
erosioncontrolBMP's.
30.385
CalculateTimeofConcentration(t)t
=\[L/H\]/128(Malcom)
cc
L=500Ft.Hydrauliclengthofwatershed
H=19Ft.Elevationchangealonglength
t=Minimumt=5minutes
3.3Minutes
cc
t(min)=UseMinimumt:
5.0Minutes
cc
CalculatePeakFlowRate(Q)Q=CiA
ImerviousArea
p
*RationalCoefficientTable1.6NCDOTDesignManual
C=0.9
*RainfallIntensityAppendixANCDOTDesignManual
i=7.84in/hr
Fayetteville,NC10yr,5MinuteStorm
DrainageArea,Impervious
A=0AC
=
Q
0CFS
Imp
PerviousArea
*RationalCoefficientTable1.6NCDOTDesignManual
C=0.5
*RainfallIntensityAppendixANCDOTDesignManual
i=7.84in/hr
Fayetteville,NC10yr,5MinuteStorm
DrainageArea,Pervious
A=2.36AC
Q=
9.2512CFS
Per
Q=
9.2512CFS
10Total
DrainageArea=2.36ACSelectTemp.RockSedimentDamTYBBasin
*(NCDOTBMPSelection&DesignCriteriaChart)

BASIN2Pg.2
CalculateBasinDesignMinimums
StorageVolume=3600CF/AC*NCDOTGuidelines
Min.Capacity=8496CF
435Q
SurfaceArea=SF*NCDOTGuidelines
10
Min.SurfaceArea=4024.272SF
SizeSelectedBMPBasin
TopDimensions*BottomDimensions
Length:90FtLength:78
Width:45FtWidth:33
Depth:3Ft(AtWeir)*Min2:1(L:W)Ratio
SideSlopes:2:1(H:V)
BasinSizeis:
SURFACEAREA=4050SFGood
BasinVolumeis:
9864Good
RETENTIONVOLUME=
SizeoutletWeir
WidthofWeir:8Ft*NCDOTDesignManual
COMPLETEDSTORMWATERBASINDESIGN
BasinSize:90Ftx45Ftx3Ft
BasinDrainageArea:2.36AC
WidthofWeir:8FT

BASIN3
PROJECT:NCDOTBridge#59
DESCRIPTION:Bridge#59
SUBJECT/TASK:CalculateStormwaterRunoff&SizeTreatmentSystemforBorrowPit
CALCULATEDBY:
DATE:10/30/2013
Objective:
CalculateStormwaterRunoffatproposedborrow/wastepitthenselectandsizetheappropriate
erosioncontrolBMP's.
30.385
CalculateTimeofConcentration(t)t
=\[L/H\]/128(Malcom)
cc
L=672Ft.Hydrauliclengthofwatershed
H=20Ft.Elevationchangealonglength
t=Minimumt=5minutes
4.5Minutes
cc
t(min)=UseMinimumt:
5.0Minutes
cc
CalculatePeakFlowRate(Q)Q=CiA
ImerviousArea
p
*RationalCoefficientTable1.6NCDOTDesignManual
C=0.9
*RainfallIntensityAppendixANCDOTDesignManual
i=7.84in/hr
Fayetteville,NC10yr,5MinuteStorm
DrainageArea,Impervious
A=0AC
=
Q
0CFS
Imp
PerviousArea
*RationalCoefficientTable1.6NCDOTDesignManual
C=0.5
*RainfallIntensityAppendixANCDOTDesignManual
i=7.84in/hr
Fayetteville,NC10yr,5MinuteStorm
DrainageArea,Pervious
A=2.31AC
Q=
9.0552CFS
Per
Q=
9.0552CFS
10Total
DrainageArea=2.31ACSelectTemp.RockSedimentDamTYBBasin
*(NCDOTBMPSelection&DesignCriteriaChart)

BASIN3Pg.2
CalculateBasinDesignMinimums
StorageVolume=3600CF/AC*NCDOTGuidelines
Min.Capacity=8316CF
435Q
SurfaceArea=SF*NCDOTGuidelines
10
Min.SurfaceArea=3939.012SF
SizeSelectedBMPBasin
TopDimensions*BottomDimensions
Length:90FtLength:78
Width:45FtWidth:33
Depth:3Ft(AtWeir)*Min2:1(L:W)Ratio
SideSlopes:2:1(H:V)
BasinSizeis:
SURFACEAREA=4050SFGood
BasinVolumeis:
9864Good
RETENTIONVOLUME=
SizeoutletWeir
WidthofWeir:8Ft*NCDOTDesignManual
COMPLETEDSTORMWATERBASINDESIGN
BasinSize:90Ftx45Ftx3Ft
BasinDrainageArea:2.31AC
WidthofWeir:8FT

BASIN4
PROJECT:NCDOTBridge#59
DESCRIPTION:Bridge#59
SUBJECT/TASK:CalculateStormwaterRunoff&SizeTreatmentSystemforBorrowPit
CALCULATEDBY:
DATE:10/30/2013
Objective:
CalculateStormwaterRunoffatproposedborrow/wastepitthenselectandsizetheappropriate
erosioncontrolBMP's.
30.385
CalculateTimeofConcentration(t)t
=\[L/H\]/128(Malcom)
cc
L=847Ft.Hydrauliclengthofwatershed
H=28Ft.Elevationchangealonglength
t=Minimumt=5minutes
5.2Minutes
cc
t(min)=UseMinimumt:
5.0Minutes
cc
CalculatePeakFlowRate(Q)Q=CiA
ImerviousArea
p
*RationalCoefficientTable1.6NCDOTDesignManual
C=0.9
*RainfallIntensityAppendixANCDOTDesignManual
i=7.84in/hr
Fayetteville,NC10yr,5MinuteStorm
DrainageArea,Impervious
A=0AC
=
Q
0CFS
Imp
PerviousArea
*RationalCoefficientTable1.6NCDOTDesignManual
C=0.5
*RainfallIntensityAppendixANCDOTDesignManual
i=7.84in/hr
Fayetteville,NC10yr,5MinuteStorm
DrainageArea,Pervious
A=4.09AC
Q=
16.0328CFS
Per
Q=
16.0328CFS
10Total
DrainageArea=4.09ACSelectTemp.RockSedimentDamTYBBasin
*(NCDOTBMPSelection&DesignCriteriaChart)

BASIN4Pg.2
CalculateBasinDesignMinimums
StorageVolume=3600CF/AC*NCDOTGuidelines
Min.Capacity=14724CF
435Q
SurfaceArea=SF*NCDOTGuidelines
10
Min.SurfaceArea=6974.268SF
SizeSelectedBMPBasin
TopDimensions*BottomDimensions
Length:120FtLength:108
Width:60FtWidth:48
Depth:3Ft(AtWeir)*Min2:1(L:W)Ratio
SideSlopes:2:1(H:V)
BasinSizeis:
SURFACEAREA=7200SFGood
BasinVolumeis:
18504Good
RETENTIONVOLUME=
SizeoutletWeir
WidthofWeir:12Ft*NCDOTDesignManual
COMPLETEDSTORMWATERBASINDESIGN
BasinSize:120Ftx60Ftx3Ft
BasinDrainageArea:4.09AC
WidthofWeir:12FT

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