20081222 Ver 1_More Info Received_20080826

Office Use Only: Form Version March 05
USACE Action ID No. DWQ No.
(If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".)
1. Processing M `
Check all of the approval(s) requested for this project: AW 2 6Z008
? Section 404 Permit ® Riparian or Watershed .=$u? er-_Rules
? Section 10 Permit ? Isolated Wetland Permit fro°tn IYNO' 1
? 401 Water Quality Certification ? Express 401 Water Quality Certification
2. Nationwide, Regional or General Permit Number(s) Requested:
3. If this notification is solely a courtesy copy because written approval for the 401 Certification
is not required, check here: ?
4. If payment into the North Carolina Ecosystem Enhancement Program (NCEEP) is proposed
for mitigation of impacts, attach the acceptance letter from NCEEP, complete section VIII,
and check here: ?
5. If your project is located in any of North Carolina's twenty coastal counties (listed on page
4), and the project is within a North Carolina Division of Coastal Management Area of
Enviromnental Concern (see the top of page 2 for further details), check here: ?
II. Applicant Information
1. Owner/Applicant Information
Name: New Market HDS LLC c/o H. David Swain
Mailing Address: 1121 Military Cutoff Road, Suite P,
Wilmington, NC, 28405
Telephone Number: [phone] Fax Number-
E-mail Address: david a,swainassociates.com
2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter
must be attached if the Agent has signatory authority for the owner/applicant.)
Name:
Company Affiliation:
Mailing Address:
Telephone Number: Fax Number:
E-mail Address:
Updated 11/1/2005
Page 5 of 12
III. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project:. Carolina Colours Shopping Center
2. T.I.P. Project Number or State Project Number (NCDOT Only):
3. Property Identification Number (Tax PIN): 7-104-9003
4. Location
County: Craven Nearest Town: New Bern
Subdivision name (include phase/lot number):
Directions to site (include road numbers/names, landmarks, etc.):
Hwv 70 (east) toward Havelock - RH on to West Thurman Road then were left onto Waterscape
Way; Shopping Center to be located on west-side (RH)
5. Site coordinates (For linear projects, such as a road or utility line, attach a sheet that
separately lists the coordinates for each crossing of a distinct waterbody.)
Decimal Degrees (6 digits minimum): 35.034444 °N 77.012500 °W
6. Property size (acres): 25.69
7. Name of nearest receiving body of water: Brice Creek
8. River Basin: Neuse River
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://h2o.enr.state.ne.us/admiii/maps/.)
9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application:. Densely forested, undeveloped
10. Describe the overall project in detail, including the type of equipment to be used:
Updated 11/1/2005
Page 6 of 12
Shopping Center. Bulldozers backhoes and heavy equipment wil be use for construction
Explain the purpose of the proposed work: See attached narrative.
IV. Prior Project History
If jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules.
See attached wetland delineation
V. Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
No future permit requests are anticipated.
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. Each impact must be
listed separately in the tables below (e.g., culvert installation should be listed separately from
riprap dissipater pads). Be sure to indicate if an impact is temporary. All proposed impacts,
permanent and temporary, must be listed, and must be labeled and clearly identifiable on an
accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial)
should be shown on a delineation map, whether or not impacts are proposed to these systems.
Wetland and stream evaluation and delineation forms should be included as appropriate.
Photographs may be included at the applicant's discretion. If this proposed impact is strictly for
wetland or stream mitigation, list and describe the impact in Section VIII below. If additional
space is needed for listing or description, please attach a separate sheet.
1. Provide a written description of the proposed impacts: n/a
Updated 11/1/2005
Page 7 of 12
2. Individually list wetland impacts. Types of impacts include, but are not limited to
mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams,
senarately lict imnnrtc Aria to tenth etriirti,,A -1 fl--A
Wetland Impact
Site Number

(indicate on map)
Type of Impact Type of Wetland
(e.g., forested, marsh
,
herbaceous, bog, etc.) Located within
I00-year

Floodplain
( es/no) Distance to
Nearest

Stream
(linear feet) Area of
Impact

(acres)
n/a

Total Wetland Impact (acres)
3. List the total acreage (estimated) of all existing wetlands on the property:
4. Individually list all intermittent and perennial stream impacts. Be sure to identify temporary
impacts. Stream impacts include, but are not limited to placement of fill or culverts, dam
construction, flooding, relocation, stabilization activities (e.g., cement walls, rip-rap, crib
walls, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is proposed,
plans and profiles showing the linear footprint for both the original and relocated streams
must be included- To calctilatP ar-,noP rmiltiniv larirrth X A%7;rlth tb- rl;.,; 70 1- Al ZKo
Stream Impact
Number
indicate on ma)
Stream Name
Type of Impact Perennial or
Intermittent? Average
Stream Width
Before Impact Impact
Length
(linear feet Area of
Impact
(acres)
n/a

Total Stream Impact (by length and acreage)
5. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.). Open water impacts include, but are not limited to
fill. excavation. dredging- flooding- drninnoe hrnikhendc Ptr
Open Water Impact
Site Number
Indicate on ma
( ) Name
(if applicable) Wat) v
Type of Impact Type of Waterbody
(lake, pond, estuary, sound, bay,

ocean, etc.) Area of
Impact

(acres)
n/a

Total Open Water Impact (acres)
Updated 11/1/2005
Page 8 of 12
6. List the cumulative impact to all Waters of the U.S. resulting from the nroiect:
Stream Impact (acres): 0 1
Wetland Impact (acres): 0
Open Water Impact (acres): 0
Total Impact to Waters of the U.S. (acres) 0
Total Stream Impact (linear feet): 0
7. Isolated Waters
Do any isolated waters exist on the property? ? Yes ® No
Describe all impacts to isolated waters, and include the type of water (wetland or stream) and
the size of the proposed impact (acres or linear feet). Please note that this section only
applies to waters that have specifically been determined to be isolated by the USACE.
8. Pond Creation N/A
If construction of a pond is proposed, associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): ? uplands ? stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.):
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.):
Current land use in the vicinity of the pond:
Size of watershed draining to pond:
VII. Impact Justification (Avoidance and Minimization)
Expected pond surface area:
Specifically describe pleasures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts.
VIII. Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
Updated 11/1/2005
Page 9 of 12
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on January 15, 2002, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCEEP concurrence shall be placed on hold as incomplete.
An applicant may also choose to review the current guidelines for stream restoration in DWQ's
Draft Technical Guide for Stream Work in North Carolina (see DWQ website for most current
version.).
I. Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
n/a
2. Mitigation may also be made by payment into the North Carolina Ecosystem Enhancement
Program (NCEEP). Please note it is the applicant's responsibility to contact the NCEEP at
[phone] to determine availability, and written approval from the NCEEP indicating
that they are will to accept payment for the mitigation must be attached to this form. For
additional information regarding the application process for the NCEEP, check the NCEEP
website at http://www.nceep.net/pages/inlieureplace.htm. If use of the NCEEP is proposed,
please check the appropriate box on page five and provide the following information:
Amount of stream mitigation requested (linear feet): n/a
Amount of buffer mitigation requested (square feet): n/a
Amount of Riparian wetland mitigation requested (acres): n/a
Amount of Non-riparian wetland mitigation requested (acres): 11/a
Amount of Coastal wetland mitigation requested (acres): n/a
Updated 11/1/2005
Page 10 of 12
IX. Environmental Documentation (required by DWQ)
1. Does the project involve an expenditure of public (federal/state/local) funds or the use of
public (federal/state) land? Yes ? No
2. If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at [phone] to review current thresholds for environmental documentation.
Yes ? No ?
3. If yes, has the document review been finalized by the State Clearinghouse? If so, please
attach a copy of the NEPA or SEPA final approval letter. Yes ? No ?
X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
1. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 02B .0243 (Catawba) 15A NCAC
2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please
identify unnamed tributary #27-101-40-(7)? Yes ® No ?
2. If "yes", identify the square feet and acreage of impact to each zone of the riparian buffers.
If buffer mitigation is required calculate the required amount of mitigation by applying the
buffer multipliers.
Zone* Impact Multiplier Required
(square feet) Mitigation
1 0 3 (2 for Catawba) 0
2 0 1.5 0
Total I 0 I I 0
* Zone 1 extends out 30 feet perpendicular from the top of the near bank of channel; Zone 2 extends an
additional 20 feet from the edge of Zone 1.
3. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e.,
Donation of Property, Riparian Buffer Restoration / Enhancement, or Payment into the
Riparian Buffer Restoration Fund). Please attach all appropriate information as identified
within 15A NCAC 2B .0242 or.0244, or.0260. This is an impact for a drainage pipe with
a stormwater management facility upstream to attenuate flow and control nitrol?en. i.e. it is
allowable under the table of uses.
Updated l l/l/2005
Page I 1 of 12

XI. Stormwater (required by DWQ)
Describe impervious acreage (existing and proposed) versus total acreage on the site. Discuss
stormwater controls proposed in order to protect surface waters and wetlands downstream from
the property. If percent impervious surface exceeds 20%, please provide calculations
demonstrating total proposed impervious level.
72.5%0 - Stormwater wetlands are proposed to control nitrogen and attenuate peak flows
18.63 acres impervious/25.69 acres total = 72.5%
XII. Sewage Disposal (required by DWQ)
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.
Sewage treatment provided by the City of New Bern
XII1. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (I 5A NCAC 2H .0500) or any Buffer Rules?
Yes ? No
1s this an after-the-fact permit application? Yes ? No
XIV. Cumulative Impacts (required by DWQ)
Will this project (based on past and reasonably anticipated future impacts) result in additional
development, which could impact nearby downstream water quality? Yes ? No
If yes, please submit a qualitative or quantitative cumulative impact analysis in accordance with
the most recent North Carolina Division of Water Quality policy posted on our website at
bttp://l12o.enr.state.nc.us/ncwetlands. If no, please provide a short narrative description:
XV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
Threy u Speci01ccessibility problems, or other issues outside of the applicant's control).

eld6B
Applicant/Agent's Signature Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
Updated 11/1/20015
Page 12 of 12
a
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i? (5,
CAROLINA COLOURS SHOPPING CENTER
NEW BERN, NORTH CAROLINA
Preconstruction Notification Narrative
Prepared for:
New Market HDS, LLC
1121 Military Cutoff Road, Suite P
Wilmington, NC 28405
Prepared by:
v MCMM&CREED
2807 Neuse Blvd., Building 5
New Bern, NC 28562
[phone]
Otis
Project #
1421-0007 (40)

N'
S = Jrfr _

?tfPIF2? `
CAROLINA COLOURS SHOPPING CENTER
NEW BERN, NC
Craven County
McKim & Creed Project # 1421-0007 (40)
July 08
Table of Contents
DESIGN NARRATIVE
Existing Site
Proposed Improvements
Rip Rap Outlet Protection Calculations
Stormwater Wetlands Calculations
Routing Calculations
Swale Calculation
Culvert Calculation
Carolina Colours Shopping Center
New Bern, North Carolina
July, 2008
PRECONSTRUCTION NOTIFICATION NARRATIVE
General Information
Project Name: Carolina Colours Shopping Center
Address: Waterscape Way, Carolina Colours Subdivision, New Bern, NC
Acres in Tract: 25.69
Disturbed Acreage: 30
Wetland Acres: 0
Tax Parcel ID: 7-104-9003
Previous Permits: None
Phase 1 of the proposed Shopping Center will consist of a 48,756 square foot grocery
store anchor with an additional 19,200 sf of shops, 340 parking spaces, access roads,
utilities, landscaping, and 5 outparcels. Future phases include further development of the
parent tract and 5 outparcels.
Water and sewer services shall be provided by the City of New Bern.
There are no existing built-upon areas. There are no historic sites in the project area. No
public monies are being used for this project.
Stormwater Information
The Carolina Colours Shopping Center was designed as a high density development with
the primary Stormwater treatment being a Stormwater wetland and vegetated swale
following the stormwater wetland. The stormwater wetland was sized to accommodate
the built out condition of the 25.69 acre tract. The built out impervious area was
estimated at 18.7 acres or 72.7% of the site. The site will outlet to an unnamed tributary
of Brice's Creek. Brice's Creels is within the Neuse River Basin and is classified as SC;
SW; NSW. The classification is dated May 1, 1988 and the index # is 27-101-40-(7).
The Stormwater will be collected in a storm drainage system designed to handle the 10-
year storm and routed under Waterscape Way to an approximately 1.7 acre stormwater
wetland. According to the North Carolina Division of Water Quality Stormwater Best
Management Practices Manual a properly designed stormwater wetland has an 85% total
suspended solids removal rate and a 40% total nitrogen removal rate. This removal rate
satisfies the requirements of the Coastal stormwater rules and the nitrogen reduction
requirements to bypass the riparian buffer.
The runoff will exit the stormwater wetlands through a 42" pipe into a riprap energy
dissipater. The dissipater will be followed by a weir type level spreader and a 115' long
vegetated filter. Finally, the runoff will enter a 48" pipe protected with riprap at the
entrance, run through the pipe, and onto a riprap energy dissipater situated above the
normal water line of the stream.
Zone one of the buffer will be allowed to naturally revegetate in woody vegetation. Zone
two of the buffer shall be regarded and mowed occasionally.
Please refer to the Appendices for calculations and additional technical information.
RIPRAP OUTLET PROTECTION CALCULATIONS
??MCKIM&CREED
Rip-rap Design Worksheet
Project Name: Carolina Colours Shopping Center
Outlet Name & location: Single 42" Overflow Structure
Outlet flowrate 51 cfs
Pipe diameter 42 inches
Outlet pipe slope 0.007 percent
Full flow velocity 5.3 ft/sec
rieure 8.06.b.1
25 --

Zone 7 -

20 - - -
-
- - Zone 6-- ----
d 15
-- - --

Zo ne 5
o
10
- -
- Zo ne 4

5 Zo ne l ilsee Zo ne 3
_

Zone 2 -
i
0
0 1 2 3 4 5 6 7 8 9 10
Pipe diameter (ft)
Zone from graph above = 2
Outlet pipe diameter 42 in. Length = 21.0 ft.
Outlet flowrate 51.0 cfs Width = 10.5 ft.
Outlet velocity 5.3 ft/sec Stone diameter = 6 in.
Material = Class B Thickness = 22 in.
Zone Material Diameter Thickness Length Width
1 Class A 3 9 4 x D(o) 3 x D(o)
2 Class B 6 22 6 x D(o) 3 x D(o)
3 Class I 13 22 8 x D(o) 3 x D(o)
4 Class I 13 22 8 x D(o) 3 x D(o)
5 Class II 23 27 10 x D(o) 3 x D(o)
6 Class 11 23 27 10 x D(o) 3 x D(o)
7 Special study required
Calculations based on NY DOT method - Pages 8.06.05 through 8.06.06 in NC Erosion Control Manual
S:\1421-Swain and Associates \ 0007 \ 40-Permit \ NCDENR \ Erosion Control \
Riprap Outlet Protection Template.xls
FES-1
8/12/2008
MCKIM&CREED
Rip-rap Design Worksheet
Project Name: Carolina Colours Shopping Center
Outlet Name & location: 48" Pipe Through Buffer
Outlet flowrate 51 cfs
Pipe diameter 48 inches
Outlet pipe slope 0.084 percent
Full flow velocity 4.1 ft/sec
FiEure 8.Mb.1
25

-- '
- Zoue 7

20 - -

- Z 6
one -
15 - -
--

'v -- - Zo ne 5 -
o
10
- -

-
- -
-- Zo ne 4

-

q Zo ne 1
--
Zon
e 3
... _ _

Zone 2

0 1 2 3 4 5 6 7 8 9 10
Pipe diameter (ft)
Zone from graph above = 2
Outlet pipe diameter 48 in. Length = 24.0 ft.
Outlet flowrate 51.0 cfs Width = 12.0 ft.
Outlet velocity 4.1 ft/sec Stone diameter = 6 in.
Material = Class B Thickness = 22 in.
Zone Material Diameter Thickness Length Width
1 Class A 3 9 4 x D(o) 3 x D(o)
2 Class B 6 22 6 x D(o) 3 x D(o)
3 Class I 13 22 8 x D(o) 3 x D(o)
4 Class I 13 22 8 x D(o) 3 x D(o)
5 Class II 23 27 10 x D(o) 3 x D(o)
6 Class II 23 27 10 x D(o) 3 x D(o)
7 Special study required
Calculations based on NY DOT method - Pages 8.06.05 through 8.06.06 in NC Erosion Control Manual
S:\1421-Swain and Associates \ 0007 \ 40-Permit \ NCDENR\ Erosion Control \
Riprap Outlet Protection Template.xls
FES-3)
8/12/2008
STORMWATER WETLAND CALCULATIONS
Carolina Colours Shopping Center
New Bern, North Carolina 7/31/2008
Stormwater Wetlands Worksheet Calculated By: EJF
85% TSS
40% Nitrogen
35 % Total Phosphorus
Calculations
Units Symbols & Governing Equations
Design storm
1.00 in. RD
Total Drainage Area
Impervious Area 24.89 ac q
Green Area 18.68 ac gq
6.21 ac GA
Percent Impervious
75.05 % IA=BA/A*100
Rv
0.73 =0.05+0.9*IA
Approximate runoff volume for
1" Storm
65,545 cubic ft V=3630*Rp*Rv*A
Surface Area Required
65,545 sq ft SA=V/D D=1'
Permanent Pool Surface Area Provided 68,096 sq ft PSA (from CAD)
Permanent Pool Elevation
Design Storage Elevation 18.50 ft (from site plan)=PPE

Top Bank Elevation 19.50 ft (from site plan)=DSE

Bottom Elevation 22.00 ft (from site plan)

Design Storage Depth Provided 18.00 ft (from site plan)

Design Pool Surface Area 1.00 ft DSDP=DSE-PPE

Design Storage Provided 73,395 sq ft DPSA (from CAD)
70,746 cubic ft DS=DSDP*(PSA+DPSA)/2
Drawdown Outlet Size
Area (2 day drawdown) 16.04 sq in A2=(Q/Cd)/(2gh)^.5
where Q=DS/time, Cd=.60, h=DSDP/2
time=172800 seconds (2 days)
Diameter Of Orifice (2 day drawdown) 4.52 in D2=2*(A2/PI)^.5
Area (5 day drawdown) 6.42 sq in A5=(Q/Cd)/(2gh)^.5
where Q=V/time, Cd=.60, h=DSD/2
time=432000 seconds (5 days)
Diameter Of Orifice (5 day drawdown) 2
.86 in D5=2*(A5/PI)^.5
Final Orifice Diameter 4.50 in
ROUTING CALCULATIONS
1S
2S
Predeveloped HT Shopp ng Center
7?7
2P
Stormwater Wetlands
?S bat Reach, Pon Lnk Drainage Diagram for Harris Teeter
F Prepared by McKim and Creed 8/3/2008
??? HydroCAD® 8.00 s/n 004382 © 2006 HydroCAD Software Solutions LLC
Harris Teeter Type Ill 24-hr 1-Year Storm Rainfall=3.70"
Prepared by McKim and Creed Page 2
HydroCAD® 8.00 s/n 004382 © 2006 HydroCAD Software Solutions LLC
8/3/2008
Subcatchment IS: Predeveloped
Runoff = 27.39 cfs @ 12.74 hrs, Volume= 4.350 af, Depth> 2.10"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs
Type III 24-hr 1-Year Storm Rainfall=3.70"
Area (ac) CN Description
24.890 86 Woods/ grass comb. HSG D
24.890 Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
55.3 1,450 0.0040 0.44 Lag/CN Method,
Subcatchment IS: Predeveloped
Hydroamh
-Runoff
N
U
3
0
LL
y 10 ld 17 18 19 20
Time (hours)
Harris Teeter Type 11124-hr 1-Year Storm Rainfall=3.70"
Prepared by McKim and Creed Page 3
HydroCADO 8.00 s/n 004382 © 2006 HydroCAD Software Solutions LLC 8/3/2008
Subcatchment 2S: HT Shopping Center
Runoff = 41.83 cfs @ 12.52 hrs, Volume= 5.897 af, Depth> 2.84"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs
Type III 24-hr 1-Year Storm Rainfall=3.70"
Area (ac) CN Description
18.680 98 Paved parking & roofs
6.210 80 >75% Grass cover, HSG D
24.890 94 Weighted Average
6.210 Pervious Area
18.680 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
39.8 1,450 0.0040 0.61 Lag/CN Method,
Subcatchment 2S: HT Shopping Center
Hydrograph
- Runoff
N
U
3
O
LL
9 14 ld 14 15 16 17 18 19 20
Time (hours)
Harris Teeter
Prepared by McKim and Creed
HydroCAD® 8 00 On 004'82 0 2006 HydroCAD
Type 11124-hr 9-Year Storm Rainfall=3.70"
,)nc i i r, Page 4
Pond 2P: Stormwater Wetlands
Inflow Area =
Inflow = 24.890 ac,
41
83 cfs @ Inflow Depth > 2.84"
12
52 for 1-Year Storm event

Outflow = .
22.47 cfs @ .
hrs, Volume=
12.98 hrs
Volume=
5'897 of
Primary = 22.47 cfs @ ,
12.98 hrs, Volume= 4.097 af, Atten= 46%, Lag= 27.3 min
4.097 of
Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs
Peak Elev= 20.22' @ 12.98 hrs Surf-Area= 77,627 sf Storage= 125,289 cf
Plug-Flow detention time= 153.5 min calculated for 4.083 of (69% of inflow)
Center-of-Mass det. time= 89.4 min ( 870.5 - 781.2 )
Volume Invert Avail.Stora e
#1 18.50' 272,862 cf
Elevation
(feet) Surf.Area Inc.Store Cum.Store

18
50 (sq-ft) (cubic feet) (cubic feet)
.
19.00 68,096
70,479 p

34,644

34
644
0
20.00
.00
21
00 76,311 73,395 ,
108,039
.
22.00 82,183
88
970 79,247 187,286
, 85,577 272,862
Device Ro
41 Primary 18.00'
Outlet Devices
42.0" x 52.0' long Culvert RCP, groove end w/headwall, Ke= 0.200
Outlet Invert= 17.50' S=0.0096'/' Cc= 0.900
n= 0.013 Concrete pipe, straight & clean
#2 Device 1 18.50' 4.5" Vert. Orifice/Grate C= 0.600
4-3 Device 1 19.50' 11.0' long x 0.5' breadth Broad-Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00
Coef. (English) 2.80 2.92 3.08 3.30 3.32
Primary OutFlow Max=22.43 cfs @ 12.98 hrs HW=20.22' (Free Discharge)
't--1=Culvert (Passes 22.43 cfs of 30.24 cfs potential flow)
?2=Orifice/Grate (Orifice Controls 0.66 cfs @ 5.97 fps)
3=Broad-Crested Rectangular Weir (Weir Controls 21.77 cfs @ 2.74 fps)
De
Custom Stage Data (Prismatic) Listed below (Recalc)
Harris Teeter Type 11124-hr 1-Year Storm Rainfall=3.70"
Prepared by McKim and Creed Page 5
HydroCADO 8.00 s/n 004382 © 2006 HydroCAD Software Solutions LLC
8/3/2008
Pond 2P: Stormwater Wetlands
34
26
v
24
0 22
1z 20
0-p
5
10 11 12 13 14 1'5 1'6 17 1,8 19 20
Time (hours)
Pond 2P: Stormwater Wetlands
Stage-Discharge
- Primary
21
CU
v
w
c
0
M
v
w
?. Orifice/Grate
10 15 20 25 30 35 40 45 50 55 60 65 70
Discharge (cfs)
Culvert'
Harris Teeter Type /// 24-hr 10-Year Storm Rainfall=7.00"
Prepared by McKim and Creed Page 6
HydroCADO 8.00 s/n 004382 © 2006 HydroCAD Software Solutions LLC 8/3/2008
Subcatchment 1S: Predeveloped
Runoff = 63.24 cfs @ 12.72 hrs, Volume= 10.371 af, Depth> 5.00"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs
Type III 24-hr 10-Year Storm Rainfall=7.00"
Area (ac) CN Description
24.890 86 Woods/grass comb., HSG D
24.890 Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
55.3 1,450 0.0040 0.44 Lag/CN Method,
Subcatchment 1S: Predeveloped
Hydrograi)h
-Runoff
N
O
3
O
LL
v 11 Tim14 111 e (hou s) 14 1b 16 17 18 19 20
Harris Teeter
Prepared by McKim and Creed
HydroCAD® 8.00 s/n 004382 © 2006 Hydro
Type 11124-hr 10-Year Storm Rainfall=7.00"
itions LLC „Page 7
Subcatchment 2S: HT Shopping Center
Runoff = 83.63 cfs @ 12.52 hrs, Volume= 12.202 af, Depth> 5.88"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs
Type III 24-hr 10-Year Storm Rainfall=7.00"
Area ac
18.680
6.210
24.890
6.210
'18.680
94 Weighted Average
Pervious Area
Impervious Area
GD
- Runoff
CN
98
80
Description
Paved parking & roofs
>75% Grass cover. H:
Harris Teeter
Prepared by McKim and Creed
HydroCAD® 8.00 s/n 004382 © 2006 Hydro
Type 111 24-hr 10-Year Storm Rainfall=7.00"
Solutions LLC
Pond 2P: Stormwater Wetlands
Inflow Area =
Inflow = 24.890 ac,
83.63 cfs @ Inflow Depth > 5.88"
12
52 h for 10-Year Storm event

Outflow =
Primary =
51:11 cfs @
51.11 cfs @ .
rs, Volume=
12.91 hrs Volume=
12
91 h
12.202 of
10.280 af, Atten= 39% Lag= 23
2 min
.
rs, Volume= .
10.280 of
Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs
Peak Elev= 21.10' @ 12.91 hrs Surf.Area= 82,881 sf Storage= 195,776 cf
Plug-Flow detention time= 114.2 min calculated for 10.244 of (84% of inflow)
Center-of-Mass det. time= 70.2 min ( 838.8 - 768.6 )
Volume
IN 18.50'
Elevation
(feet) Surf.Area Inc.Store Cum.Store

18.00 (sq-ft)
68
096 (cubic feet) (cubic feet)

19.00
20
00 ,
70,479 0
34,644 0
34,644
.
21.00 76,311
82,183 73,395
79
247 108,039

22.00
88,970 ,
85,577 187,286
272,862
Device Routing
#1 Primary
#2_ Device 1
#3 Device 1
vail.Sto
18.00
18.50'
19.50'
4z.0" x 52.0' long Culvert RCP, groove end w/headwall, Ke= 0.200
Outlet Invert= 17.50' S= 0.0096 '/' Cc= 0.900
n= 0.013 Concrete pipe, straight & clean
4.5" Vert. Orifice/Grate C= 0.600
11.0' long x 0.5' breadth Broad-Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00
Coef. (English) 2.80 2.92 3.08 3.30 3.32
Primary OutFlow Max=51.10 cfs @ 12.91 hrs HW=21.10' (Free Discharge)
Z--1=Culvert (Barrel Controls 51.10 cfs @ 7.52 fps)
L2=Orifice/Grate (Passes < 0.83 cfs potential flow)
3=Broad-Crested Rectangular Weir (Passes < 74.08 cfs potential flow)
272,862 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Outlet Devi
Page 8
Harris Teeter
Prepared by McKim and Creed Type 111 24-hr 70-Year Storm Rainfall=7.00"
H droCAD® 8.00 s/n 004382 © 2006 H droCAD Software Solutions LLC Page 9
8/3/2008
Pond 2P: Stormwater Wetlands
Pond 2P: Stormwater Wetlands
- Primary
SWALE CALCULATION
TRAPEZOIDAL CHANNEL ANALYSIS
NORMAL DEPTH COMPUTATION
August 3, 2008
PROGRAM INPUT DATA
DESCRIP'T'ION

----------------------------------------- VALUE
--------
Flow Rate ----------
Channel Bottom Slope (ft/ft). ....'........... 51.1
..
Manning's Roughness Coefficient (n-value) 0.002
.
Channel Left Side Slope (horizontal/vertical) 0.03
.
Channel Right Side Slope (horizontal/vertical)
. 3.0
.......
.
Channel Bottom Width (ft) .............
..... 3.0
.
COMPUTATION RESULTS
DESCRIPTION
--------------------------- VALUE
Normal Depth (ft) .............. ------------------ ------
Flow Velocity (fps) ......................................... 2.14
.................
Froude Number ............................... 2.53
................
Velocity Head (ft)........................
..
0.395
..............
Energy Head (ft) .... ..................... 0.1
Cross-Sectional Area of Flow (sq ft)
... 2.24
Top Width of Flow (ft)•••.••••• ................... 20.21
.
" " 15:86
HYDROCALC Hydraulics for Windows, Version 1.2B Copyright (c) 1996
Dods
n
o
& Associates, Inc., 5629 FM 1960 West, Suite 314, Houston, TX 77069
Phone:[phone]
Fax:[phone]
,
42, Email:[e-mail]
All Rights Reserved.
CULVERT CALCULATION

PIPE CULVERT ANALYSIS '`'3 /?(-P //f?CVC H a?f ?'
COMPUTATION OF CULVERT PERFORMANCE CURVE
/o p'--- r 5 f-,-, r 4-,
August 12, 2008
PROGRAM INPUT DATA
DESCRIPTION
VALUE
----------------------------------------------------------------------------
Culvert Diameter (ft) ..................................... 4.0
FHWA Chart Number. ., 1
FHWA Scale Number (Type of Culvert Entrance) ................ 3
Manning's Roughness Coefficient (n-value) ................... 0.013
Entrance Loss Coefficient of Culvert Opening ................ 0.5
Culvert Length (ft) ......................................... 80.0
Invert Elevation at Downstream end of Culvert (ft).......... 17.5
Invert Elevation at Upstream end of Culvert (ft)............ 17.62
Culvert Slope (ft/ft) ....................................... 0.0015
Starting Flow Rate (cfs) .................................... 1.0
Incremental Flow Rate (cfs) ................................. 10.0
Ending Flow Rate (cfs) ...................................... 101.0
Starting Tailwater Depth (ft) ............................... 0.0
Incremental Tailwater Depth (ft) ............................ 1.0
Ending Tailwater Depth (ft) ................................. 10.0
COMPUTATION RESULTS
Flow Tailwater Headwater (ft) Normal Critical Depth at Outlet
Rate Depth Inlet Outlet Depth Depth Outlet Velocity
(cfs) (ft)
---------- Control
----------- Control
--------- (ft)
--------- (ft)
-- (ft) (fps)

1.0
0.0
0.38
0.44
0.37 --------
0.29 ----------
0.29 ---------
2.5
11.0 1.0 1.31 1.47 1.21 0.97 1.0 4.48
21.0 2.0 1.85 2.22 1.7 1.35 2.0 3.34
31.0 3.0 2.3 3.15 2.13 1.65 3.0 3.07
41.0 4.0 2.7 4.19 2.55 1.91 4.0 3.26
51.0 5.0 3.07 5.36 3.01 2.14 4.0 4.06

61.
6.0
3.43
6.57
4.0
2.35
4.0 -,..,
4.85
71.0 7.0 3.79 7.82 4.0 2.55 4.0 5.65
81.0 8.0 4.14 9.1 4.0 2.73 4.0 6.45
91.0 9.0 4.55 10.42 4.0 2.89 4.0 7.24
101.0 10.0 4.8 11.78 4.0 3.04 4.0 8.04
HYDROCALC Hydraulics for Windows, Version 1.2B Copyright (c) 1996
Dodson & Associates, Inc., 5629 FM 1960 West, Suite 314, Houston, TX 77069
Phone:[phone], Fax:[phone], Email:[e-mail]
All Rights Reserved.