20001195 Ver 6_Stormwater Plan_20080922

September 22, 2008
Mr. Joseph Gyamfi
NCDENR DWQ
1650 Mail Service Center.
Raleigh, NC 27699-1650
Re: Express Review Charlotte Douglas International Airport Storm Water Management Plan
Modifications
Dear Mr. Gyamfi,
Attached are the following documents which constitute our Express Review Stormwater Management
Plan submittal package for the above referenced project:
1. Application fee of $2,000.00
2. One (1) original and Two (2) copies of the Express Review Stormwater Management Plan
3. Three (3) copies of supporting information pertaining to CDIA SWMP including
a. Detailed description of the proposed SWMP with TSS and Nutrient removal calculations
b. Calculation sheets for all proposed and modified BMPs
c. BMP Supplements
d. One (1) original and Two (2) copies of the signed Operation and Maintenance Plan
4. Two (2) copies of full size plans including
a. Entire site development plan with existing and proposed contours and delineated
drainage areas
b. Erosion and Sediment control plans
c. Plan views and cross sectional details of all BMPs with elevations
d. Construction sequence and Planting schedule for the proposed BMPs
e. One (1) data CD of full size plans
We trust this completes the express review package.
HDR submits this letter, the attached project package and the application for the Express Review.
HDR looks forward to working with .NCDENR in providing these BMPs. If you have any questions
concerning the information in this letter please feel free to contact me at (704) 338 - 6825.
Sincerely,
HDR Engineering, Inc. of the Carolinas
Ronald A. Geiger, PE D?,
Project Manager
SEP Z 2 2008
cc: Jack Christine, CDIA DI:NR - v?ArER c?us l r
Andy Shook, TBcB WETLANDS ANDSTORMWATERBRANCw
HDR Engineering, Inc. of the Carol inns 128 S Tryon Street Phone: [phone]
Suite 1400 Fax: [phone]
Charlotte, NC 28202-5004 www.hdrine.com
City Of Charlotte 66-156 CHECK NO.
CHARLOTTE, NORTH CAROLINA sa, 524567
CHARLOTTE- WACHOVIA BANK,NATIONAL ASSOCIATION, CHAPEL HILL, NC 27514
COLLECTIBLE AT PAR THROUGH THE FEDERAL RESERVE BANK, CHARLOTTE,N.C.
PAY
TWO THOUSAND DOLLARS AND NO CENTS
TO THE ORDER OF
DATE CHECK AMOUNT
08/25/08 ************2,000.00
NORTH CAROLINA DIVISION OF n
WATER QUALITY VOID IN 90 DAYS C'
THIS DISBURSEMENT HAS BEEN
1621 MAIL SERVICE CENTER APPROVED AS REQUIRED BY THE
RALEIGH NC 27699-1621 "LOCAL GOVERNMENT BUDGET INANCE T R
AND FISCAL CONTROL ACT." s
CITY MANAGER
BORDER CONTAINS MICROPRINTING j
ll¦S24S6711' 1:OS3LO LSG0:207998S3227SL11'
City Of Charlotte
600 East Fourth Street
Charlotte, N.C. 28202-2848
DATE INVOICE/CREDIT MEMO. YPE DESCRIPTION GROSS DISCOUNT NET
08;25;08 AUG250 082508 685 2000A0 X00 200000
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, I `* CALL AIRPORT OR CK P/U - OK E D BY S.HITE

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THE ATT
FOR ITE ACHED CHECK IS IN PAYMENT TTAf_::
MS DESCRIBED ABOVE 2000IOO OOO 200000
DATE CHECK NO.
08/25/08 524567
APCC 34503
H
Accounting Division 600 EastFourth Street Charlotte, NC 28202-2848 704/336-2201
Finance Department
STORM WATER MANAGEMENT PLAN
AREA WEST
OF
2ND PARALLEL RUNWAY
a r' cc? N-1:3 0WF D
S t P 2, 2 2008
DENR - IA [ER QUALI Y
VrETLANDS AD,ID STORMWATER BRANCi9
Charlotte* Douglas
INTERNATIONAL AIRPORT
SEPTEMBER 17, 2008
PREPARED BY:
JALWAF& [RIGHT
4944 Parkway Plaza Boulevard, SUITE 350
Charlotte, NC 28217
704-426-6070
704-426-6080 (FAX)
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HDR ONE COMPANY Many Solutions
128. S. Tryon St., Suite 1400 ( Charlotte, NC 128202-5004
Phone: [phone] Fax: [phone]
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State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality 401/WetJands Unit
EXPRESS REVfEW PROGRAM STORMWATER MANAGEMENT APPLICATION FORM
Rds fbrm 7my be photocopied for u5c as an onginal r=n
1. GENERAL INFORMATION D ? Q9 9 0W ? Do
1. Applicant's name (specify the narne of the corporation, individual, etc. who owns the project): S E P 2 2 2008
Charlotte Douglas International Airport (underthe name City of Charlotte)-
DENR - INATER QUALITY
2. Owner/Signing Official's name and title (person legally responsible for facility and compliance): WETLANDS AND STORMI&TER BRANCH
Mr Jerry Orr, Airport Director
3- Owmer Mailing Address for person listed in item 2 above:
City. P-O. Box 19066 Charlotte - State. NC Zip: 28219
Phone Number: (L724 359-4000 Fax Munber:" 659-4950_ Email Address: tjorr charlotteairpart.com
4. Project Name (subdivision., facility, or establishment name - should be consistent with project name on
plans, specifications, letters, inspection and maintenance agreements, etc.):
CD1A SWMP West f 2"' f?arallel Run ay2008
5. Location of project (Street Address):
5501 Josh Birmingham Parkway
City: Charlotte County. Mecklenburg
6. Directions to project site (from nearest maj or intersection):
-East off o 1-85 ont Billy Graham Par way than right onto Josh BirOngham Parkway
7. Latiuide: 35` 12' 20.53°' Longitude: 80° 57' 51761'° _ _ of project
8. Contact person who can answer questions about the project'
Name: Ron Geiger Talephone Number. t704 338$825
Fax Number: [phone] Email Address: [e-mail]
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ff. PERMIT INFORMATION
1. Specify whether project is (check one): New Renewal X Modification
2. If this is anew project, under which local government's jurisdiction does the project fall (e.g. Town of
Cary, city of Raleigh, or Wake County)? n1a
3. Is there a state-approved stormwater management program implemented by the local government or state
under any of the following programs (Check all that apply)?
X Phase N Post Construction X Water Supply Watershed Neuse or Tar Pamlico NSW
Randleman WSWS USMP Coastal Counties -1IQW ORW
4, if this application is being submitted for a renewal or modification to an eatistin ermit, list the existing
permit number EXP 06-1196v4 and its issue date (if known) , March 22, 200
5. Specify the type of project (check one)`
_ I,ow Density _High High Density Redevelopment General Permit X Other
6_ Additional Project Requirements (check the ones applicable),
JCAMA ivfajor X Sedimentation/Erosion Control X 404;401 Permit X NPDES Stormwater,Otber
Informations on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748
III. PROJECT INFORMATION
1. In the space provided below, summarize hevv stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project.
Runoff will be treated through the use of vacuum sweeping, grass swales, filter strips, extended
dry detention basins, and bioretention.
2. Stormwater ranoff from this project drains to the
3. Total Project Area_ 692 acres
Catawba
River basin.
4. Project Built Upon Area: 18 %
3, How many drainage areas does the project have? _ 11
6. Complete the following inforinarion for each drainage area. If there are more than two drainage areas in
the project, attach an additional sheet with the information for each area provided in the saute format as
below.
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7. How was the off,-site impervious area listed above derived? n1a
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
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The following italicized deed restrictions and protective covenants are regLdred to be recorded for all
subdivisions, outpareels and future development prior to the sale of auy lot. If lot sizes vary significantly, a
table listing each lot number, size and the allowable built-upon area for each lot must be provided as an
attachment.
1_ The following covenants are intended to ensure ongoing compliance with state riparian b?(fer
authorivation or general Certification numbers as issued by the
Division of Water Quality These cavenants may not be changed or deleted without the consent of the
,State.
2. No more than square feet of any lot shall be covered by structures or impervious
materials. Impervious materials include asphalt, gravel, concrete brick, stone, state or similar material
but do not include wood decking or the water surface of swimming pools.
3. Swales shall not betlied in, piped, or altered except as necessity to provide driveway crossing.
4. Built-upon area in excess o fthe permitted amount requires a modified water quality Bert 6 iication prior to
construction.
S_ Ah' permitted runoff from outparcels or future development shall be directed into the permitted stormwater
control svstem_ These connections to the stormwater control system shall be performed in a manner that
maintains the integrity andperformance of the system as permitted.
By your signature below, you certify that the recorded deed restrictions W protective covenants for this
project shall include all the applicable items required above, that the covenants will be binding on all parties
and persons claiming under them, that they will nui with the land, that the required covenants cannot be
changed or deleted without concurrence from the State, and that they will be recorded prior to the sale of any
lot.
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* Impervious area is defined as the built upon area including, but not limited to, buildings, roans, partttng
areas, sidewalks, gravel areas, etc.
6a. Drainage Area Continuation Sheet
Basin Information Drainage Area 3 K Drainage Area 4 G Drainage Area 5 D Drainage Area 6 M)
Receiving Stream Name Little Paw Creek Paw Creek Paw Creek Beaverdam Creek
Receiving Stream Class C C C WS-IV; B; CA
Drainage Area 64.53 52.77 4.87 16.66
Existing Impervious Area 14.52 21.48 2.20 0
Proposed Impervious Area 31.62 26.18 1.37 2.96
%Impervious Area (total) 1 48.99% 49.61% 28.13% 17.78%
Impervious Surface Area Drainage Area 3 Drainage Area 4 Drainage Area 5 Drainage Area 6
On-site Buildings
On-site Streets 1.37 0.27 1.70
On-site Parkin
On-site Sidewalks
Other on-site (Runway) 30.24 25.91 1.37 1.26
Off-site
Total: 31.62 Total: 26.18 Total: 1.37 Total: 2.96
Basin Information Drainage Area 7 N) Drainage Area 8 F Drainage Area 9 B Drainage Area 10 E)
Receiving Stream Name Coffee Creek Paw Creek Ticer Branch Paw Creek
Receiving Stream Class C C C C
Drainage Area 15.91 24.30 27.89 2.85
Existing Impervious Area 0.46 15.32 4.31 0
Proposed Impervious Area 5.98 5.35 14.44 0.18
% Impervious Area total 37.59% 22.02% 51.77% 6.32%
Impervious Surface Area Drainage Area 7 Drainage Area 8 Drainage Area 9 Draina e Area 10
On-site Buildings
On-site Streets
On-site Parkin
On-site Sidewalks
Other on-site (Runway) 5.98 5.35 14.44 0.18
Off-site
Total: 5.98 Total: 5.35 Total: 14.44 Total: 0.18
Basin Information Drainage Area 11 A
Receiving Stream Name Ticer Branch
Receiving Stream Class % C
Total Drainage Area
On-site Drainage Area
Off-site Drainage Area 222.34
Existing Im ervious* Area 0.21
Proposed Im ervious* Are 1.69
% Impervious Area total 0.76%
Impervious Surface Area Drainage Area 11
On-site Buildings
On-site Streets
On-site Parkin
On-site Sidewalks
Other on-site
Off-site
Total sf 0.00
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V. SUPPLEMENT FORMS
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The applicable stormwater management supplement form(s) listed below must be submitted for each BMP
specified for this project. The most current form(s) located on the 401)wetlands unit website at
b=•!/h2Q enr.state.iLc.uslsulhmti forms htm trust be used. Please inchide both the Design Sumtx?ary and the
Required Items Checklist along with all required items and supporting design calculations.
Bioretention Supplement

• Wet Detention Supplement
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Dry Detention Supp
• Level Spreader/Filter Str,, /Restored Buffer Supplement
Stormwater Wetland Supplement
• Grassed Swale Supplement
$and Filter Supplement
Infiltration Trench Supplement
• Infiltration. Basin Supplement
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V1. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
,A, complete package includes all of the items listed below- The complete application package should be
submitted to the DWQ Central Office.
Please indicate that you have provided the following required information by initialing in the space
provided next to each item. Initials
• Original and two copies of the Express Review Stormwater Management Application
• Signed and Notarized Inspection and Maintenance Agreement
• Three copies of the applicable Supplement Form(s) for each BMP
• Application processing fee (payable to DWQ)
• Detailed narrative description of stormwater treatment/management
• Three copies of plans and specifications, including:
Development/lyroj ect name
Engineer and firm
- Legend
- :North arrow
- Scale
Revision number & date
-,Mean high water line
Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
- Original contours, proposed contours, spot elevations, finished floor elevations
- Details of roads, drainage features, collection syster<is, and stormwater coant measures
- Wetlands and streams delineated, or a note on plans that none exist
- Existing drainage (including off-site), drainage easements, pipe sizes, runoff calculations
- Drainage areas delineated
- Vegetated buffers (where required)
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VII. AUNT AUTHORIZATION
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If you wiah to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section.
Designated agent (individual or firm): Ron Geiger @ HDR Engineering Inc
11jailing Address: 128 South Tryon St. Suite 1400
City: Charlotte State: NC Zip' 28202-5004
phone: 7() 338-6825
Fax: (_LO4) 338-6760
VIIX• APPLICANT'S CERTIFICATION
1, (print or rype name of person listed in Genfral htrormatfon, item 2) _ J e+f r "1 © r r
certify that the information included on this application form is, to the besTmy knowledge, correct and that
the project will be constructed in cenfonnance with the approved plans, that the required deed restrictions and
protective covenants will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 214.1000.
Signature: Date: _ z ' 11 -
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CHARLOTTE - DOUGLAS INTERNATIONAL AIRPORT
STORM WATER MANAGEMENT PLAN
Operation & Maintenance Plan
for
Area West of 2nd Parallel Runway
Prepared by Talbert Bright Inc.
In association with HDR Engineering
September 8, 2008
The following Operation & Maintenance Plan (OMP) has been prepared in compliance with
NCDENR DWQ 401 permitting requirements for the construction and operation of the project
entitled, Taxiway Victor Old Dowd Rd Relocation and Wallace Neel Road Relocation" located at
Charlotte/Douglas International Airport (CDIA), Charlotte, North Carolina. This project involves the
construction of a new parallel taxiway west of the existing terminal facility, Old Dowd Road
Relocation and the relocation of Wallace Neel Road. The OMP describes CDIA maintenance
responsibilities for the monitoring; cleaning, and necessary maintenance of the following Best
Management Practices (BMPs) for these new facilities:
1. Grassed Swales
2. Filter Strips
3. Extended Dry Detention Basins
4. Pavement Sweeper with Vacuum
5. Bioretention Basin
OPERATION AND MAINTENANCE AGREEMENT
I acknowledge and agree by my signature below that I am responsible for the
performance of the six maintenance procedures listed in this OMP. I agree to notify
DWQ of any problems with the system or prior to any changes to the system or
responsible party.
Print name: T. J. Orr
Title: Aviation Director
Address:5501 Josh Birmingham Pkwy. Charlotte, NC 28208
Phone [phone]
Signature: ' (?
Date: q - L!5'08
1, RoGc-e A n,?, es S , a Notary Public for the State of North
Carolina, County of Mecklenburg, do hereby certify that
T-. -? UI r- 2;00 B personally appeared before me this ISM
day of 5elAr-w-ber Eee7,, and acknowledge the due execution of the forgoing
Operation & Maintenance requirements. Witness my hand and official seal,
4(2 lam"
'?O(3s-e ? h?be?Ss
SEAL
My commission expires J? 21 Zv
1.0 Grassed Swale
1.1 Description
Grassed swales typically are used in residential and commercial developments as well as
along highway medians as alternatives or enhancements to conventional storm sewers. Swales
remove pollutants from stormwater by filtration through grasses and other vegetation, settling,
and infiltration through soil. Grassed swales are occasionally enhanced with check dams to retain
water and promote infiltration.
1.2 Monitoring
The vegetation in the grassed swale should be inspected at least twice per year.
1.3 Maintenance
Maintenance of grassed swales involves grooming the vegetation and occasionally removing
trash. Routine mowing is required for turf grasses. Grass shall be cut no lower than 5 inches. In
addition, the grass should be allowed to grow to the maximum height consistent with the species
and aesthetic requirements. The frequency of trash removal depends on the location and
attractiveness of the swale as a disposal site. Excessive sediment should not accumulate if erosion
is controlled adequately upstream. However, if excessive siltation occurs, the sediment must be
removed periodically (no less than once annually). Sediment that accumulates in the swale may
be prone to resuspension during large storm events and can kill the grass. Sediment should be
removed when it reaches a depth of 4 inches or when it covers the grass. Additional annual
maintenance activities are as follows:
¦ Repair erosion and regrade the swale to ensure that runoff flows evenly in a thin sheet
through the swale.
¦ Revegetate the swale as needed to maintain a dense growth.
1.4 Schedule
Activities Frequency
Ins ect vegetation in grassed swale Bi-Annually
Remove debris As needed
Remove sediment As needed, (annually or when it reaches a
depth of 4 inches or covers the grass)
Repair erosion Annually
Re grade and reve etate the swale As needed
Mow grassed swale Routinely for turf grasses to maintain height

2.0 Filter Strip
•

2.1 Description

• Filter strips are uniformly graded and densely vegetated sections of land, engineered and designed
to treat runoff from and remove pollutants through vegetative filtering and infiltration. Any
natural vegetated form, from grassy meadow to small forest, may be adapted for use as a filter
strip. However, the vegetation must have dense foliage and thick root mat to be effective. Filter
• strips are designed to accept runoff from overland sheet flow from upgradient development. The
strips trap sediment and sediment-bound pollutants. Because they "disconnect" impervious
• surfaces from storm sewers and lined channels, filter strips reduce effective imperviousness and
help reduce peak discharge rates by increasing travel time and by increasing abstractions from the
total flow. Filter strips typically include some method of spreading the runoff as sheet flow.

• 2.2 Monitoring
During the first 1 or 2 years after construction, filter strips should be inspected for proper
distribution of flows and signs of erosion during and after major storm events. After the first 1 or
2 years, the strip may be inspected annually or biannually. If evidence of erosion exists, the
eroded areas should be filled in and reseeded. The cause of the erosion should then be determined
• and, if possible, eliminated.

2.3 Maintenance

• With minimal maintenance, filter strips can be effective indefinitely. However, strips that
are not maintained properly may quickly become nonfunctional. Maintenance involves routine
activities such as mowing, trimming, and replanting when necessary. Strips that are used Por
• sediment removal may require periodic regrading and reseeding of their upslope edge because
• deposited sediment can kill grass and change the elevation of the edge such that the stormwater
no longer flows through the strip in thin sheets. Maintenance requirements are as follows:

¦ Remove deposited sediment, especially from the upstream edge, to maintain original
contours and grading.
¦ Repair gullies and rills that form and regrade the filter strip to ensure that the runoff flows
evenly in a thin sheet over the filter strip.
¦ Reseed and regrade the filter strip to maintain a dense growth of vegetation, especially if
the strip has been used for sediment control.
¦ Mow filter strips vegetated with grasses and harvest the clippings two to three times a
year to promote the growth of thick vegetation with optimum pollutant removal
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grass should not be cut shorter than 3 to 5 inches and may be allowed to
• grow as tall as 12 inches depending on aesthetic requirements.
¦ Keep the filter strip free of litter.
¦ E
valuate the runoff from adjacent areas to determine if it is providing enough water and
• nutrients or if additional irrigation and fertilizer are needed.
. ¦ Perform periodic aeration of the soil if excessive compaction is interfering with
maintaining a good vegetative cover.
• ¦ Test the soil pH and compare it to the recommended pH for the specific vegetation. Add
• lime if indicated.

2.4 Schedule
Activities Frequency
Inspect filter strips and level spreaders For the first two years during and after major
storm events
After first two ears annually or bi innuall
Remove deposited sediment Annually, as needed
Repair gullies and rills that form As needed
Re grade the filter strip As needed
Reseed and re grade the filter strip As needed
Mow filter strips vegetated with grasses Regularly to maintain height
Harvest clippings Two to three times per year
Remove debris As needed
Evaluate runoff from adjacent areas As needed
Perform periodic aeration of the soil As needed
Test the soil pH As needed
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3.0 Extended Dry Detention Basins
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3.1 Description
•
• As the name of this BMP implies, these basins are typically dry between storm events. To qualify
• as a BMP, dry basins should incorporate extended detention of runoff derived from small rainfall
events. In dry ED basins, a low-flow outlet slowly releases water retained below the primary
• outlet device over a period of days. This BMP can be applied in low-density residential,
• industrial, and commercial developments where sufficient space is available. The primary
purpose of dry ED basins is to attenuate and delay stormwater runoff peaks. The dry ED basins
• for this project will include a sand filter bottom with a subsurface piping system for removal of
• the filtered water to enhance the pollution removal of the dry ED basin.
• 3.2 Monitoring
•

• The facility should be inspected annually to verify that the facility is operating as designed
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e any required maintenance. If possible, inspections should occur during wet
• weather to verify that the facility is maintaining desirable retention times.
• As a minimum, the following items should be included in the annual inspection:
• Embankment settling, woody growth, animal burrowing, and signs of piping

• ¦ Condition of grass cover on the embankment, basin floor, and perimeter of the basin
Riprap displacement or failure
• Principal and emergency spillway to confirm that they meet design plans for operation
• Outlet controls, debris racks
¦ Outlet channel conditions
• Safety features
• Access for maintenance equipment
¦ Clogging of the low-flow orifice and sub-drainage piping
¦ Drainage of the low-flow channel
• Sediment accumulation in the sand media
• 3.3 Maintenance
•

• Maintaining turf grass on the tops of berms and on the exterior slopes of embankments is
advisable to facilitate access to the facility and inspection of the embankment. Any seedlings or
. planting should be removed at the earliest opportunity and the disturbed areas should be stabilized
• properly. Control of woody vegetation will require periodic mowing and a policy of not allowing
plantings on these facilities. The facility should be managed with grass no shorter than 6 to 8
inches and be mowed at least twice annually.
•
Root voids and animal burrows should be plugged with material similar to the surrounding
• materials, and capped just below grade with stone, concrete, or other material. If plugging the
• burrows does not discourage burrowing animals from returning, further measures should be taken
to remove the animal population or to make critical areas of the facility unattractive to them

• .
• Dry ED basins should have enough volume to account for sediment accumulation over time.

• Trash and debris can accumulate quickly in dry ED basins, requiring frequent cleaning, at least
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e accumulated sediment, mud, sand, and debris must be cleaned out with earth-
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moving equipment and disposed of properly, on average, every 2 to 10 years or when the basin
has lost approximately 20 percent of its capacity. Caution should be taken not to damage the sub-
drainage system. Once these materials are removed, the disturbed areas should be stabilized and
revegetated immediately; otherwise, sediment will move to downstream areas. Freshly seeded
areas should be protected with an erosion mat that has been securely staked in place to prevent
flotation. In many cases, sodding offers the best approach to stabilization after removal of
sediment and debris.
The sand filter bottom and sub-drainage piping system should be inspected bi-annually for
uniform slope and depth conditions in the sand. The bottom of the basin must be accessible for
maintenance. The access path should be a minimum of 10 feet wide, have a maximum slope of
5H:1 V. Steeper slopes may result in rutting and require more access path maintenance.
3.4 Schedule
Activities Frequency
Inspect the dry ED basins Annually (once during rain event, once during
dry period)
Maintain turf grass As needed
Remove seedlings or planting As needed
Mow Biannually (as a minimum) to maintain height
Unplug root voids and animal burrows As needed
Remove debris Biannually
Remove sediment, mud, sand, and debris Every 2 to 10 years or when the basin has lost
approximately 20 percent of its capacity
Stabilize and reve etate As needed
Maintain access path As needed
4.0 Pavement Sweeper with Vacuum
4.1 Description
Pavement sweeping and vacuuming includes use of self-propelled or walk-behind equipment to
remove sediment from streets, roadways, and other pavements. Sweeping and vacuuming
prevents sediment from the project site from entering storm drains or receiving waters.
4.2 Monitoring
Regular inspection of the pavement is critical. Make sure that the sweeper does not sweep up
anything hazardous, since it might cause damage to the machine. Schedule sweeping will occur
immediately after special events like installation of lighting in pavement, pavement closures, and
following grass cutting operations. Ensure that debris from sweeper hoppers is collected and
taken to a secure temporary storage area or directly to its permanent disposal site. Do not empty
sweeper hoppers even temporarily onto areas near storm drains or surface water bodies or where
wind or rain could re-entrain or scatter the debris. Avoid conducting sweeping operations during
rainstorms.
4.3 Maintenance
Inspect pavement prior to forecast of extended rain events, weekly during the rainy season, and at
monthly intervals during the non-rainy season. More frequent removal may be required in some
jurisdictions, if considerable sediment/debris is observed during inspection. Be careful not to
sweep up any unknown substance or any object that may be potentially hazardous. Adjust
brooms frequently; maximize efficiency of sweeping operations. After sweeping is finished,
properly dispose of sweeper wastes at an approved dumpsite.
4.4 Schedule
Activities Frequency
Inspect pavement Monthly
Sweep pavement Weekly
Sweep pavement afterspecial events Prior to re-opening of pavement
Inspect and Adjust brooms Quarterly
Dispose of sweeper waste After sweeping
Bioretention Basins
5.1 Description
Bioretention Basins treat stormwater runoff on development sites commonly located in
densely site constraints such as parking lot islands or within small pockets of land uses.
Surface runoff is directed into shallow, ground depressions. These depressions are
designed to integrate many of the pollutant removal methods that function in natural
ecosystems. During rainstorm events, runoff ponds above the mulch and soil in the
bioretention system then filters through the mulch and prepared soil mix. Typically, the
filtered runoff is collected in a perforated underdrain and diverted to the storm drain
system.
5.2 Monitoring
After the bioretention basin is established, an inspection will be conducted once a month
and within 24 hours after every storm event greater than 1.0 inches.
5.3 Maintenance
Like any landscape feature, bioretention areas must be pruned, mulched, and initially
watered and limed. Grassed bioretention cells are usually mowed. Because plants are an
important investment and essential to the aesthetic appeal of bioretention systems, they
need to be established as quickly as possible. The need for rapid establishment requires
bioretention cells to be limed, if indicated by a soil test. Additionally, plants may need to
be spot-fertilized to ensure growth and survival in soils. Watering the plants every 2 to 3
days for a couple of months helps ensure vegetation survival. The frequency of these
tasks varies seasonally, with more frequent maintenance required in summer than in
winter. Maintenance to bioretention basins include occasional removal of mulch and the
top layer of fill soil. Since clogging occurs frequently at the top of the soil column, the
bioretention basins rarely need to be completely excavated.
• Watering should not be required after establishment (about 2 to 3 years).
However, watering may be required during prolonged dry periods after plants
are established.
• Inspect flow entrances, ponding area, and surface overflow areas periodically.
Replace soil, plant material, and/or mulch in areas where erosion has occurred.
If sediment is deposited in the bioretention facility, immediately determine the
source, remove excess deposits, and correct the problem.
• Occasional pruning and removal of dead plant material may be necessary.
Periodic weeding is necessary until groundcover plants are established.
• Replace mulch annually in bioretention facilities where heavy metal deposition is
likely (e.g., commercial/ industrial uses, parking lots, or roads). In residential or
other settings where metal deposition is not a concern, replace or add mulch as
needed to maintain a 2 to 4 inch depth at least once every two years.
• Soil mixes for bioretention facilities are design to maintain long-term fertility and
pollutant processing. Therefore, the capability tests should be conducted in 20
years for metal toxicity. If this is above the standard allowance then the soil
should be replaced.
5.4 Schedule
Activities Frequency
Mowing 2-12 times / year
Mulching 1-2 times / year
Mulch removal 1 time / 2-3 ears
Watering 1 time / 2-3 days for first 1-2 months.
Sporadically after establishment
Fertilization 1 time initial)
Misc. upkeep
12 times / ear
Reference:
http://www.bae.ncsu.edu/stormwater/PublicationFiles/Bioretention2006.pdf
http://h2o.enr. state. nc. us/su/documents/Ch 12-13 ioretention_00l .pdf
CHARLOTTE/DOUGLAS INTERNATIONAL AIRPORT
STORM WATER MANAGEMENT PLAN
Project Narrative
for
Area West of 2nd Parallel Runway
Prepared by Talbert Bright Inc.
In association with HDR Engineering
September 8, 2008
Project Description
Charlotte/ Douglas International Airport (CDIA) is proposing to construct a new
runway and taxiways just west of the existing terminal on airport property in
accordance with the airport's master plan. The project also includes two cross-
connector taxiways to connect to the taxiway network, the associated navigation
aids and lighting for the new airfield pavements to the existing runway, and the
relocation of Wallace Neel Road to the western portion of the property (from
Garrison Road to Old Dowd Road). Old Dowd Road relocation connects the
relocated Wallace Neel Road to the existing Old Dowd Road. The existing
buildings and pavement within the footprint of the proposed airfield will be
removed.
Construction Phasing and Temporary Measures
Improvements to allow the new runway and taxiways to be completely
functional will take approximately three years. Phasing will consist of a
Construction Package 1 - Clearing, Grading, and Drainage, and a Construction
Package 2 - Final Grading, Pavement, and Lighting. Relocation of the existing
roadways will be integrated into the airfield improvements. On-site soils will be
used to construct all improvements. Package 1 is anticipated to be two years in
duration, with Package 2 lasting 1 1/2 years. Some overlap of these two
construction contracts is anticipated. An addendum for Package 1 is planned to
incorporate the final roadway design plans (to include fine grading, pavement,
and roadway drainage).
Construction to allow the relocation of Wallace Neel Road to be completed and
vehicular traffic restored has been programmed to be expedited within the two
contracts. Taxiway Victor and relocation of Old Dowd Road has been
incorporated into the second phase of the project. Therefore, permanent storm
drainage facilities and best management practices (BMPs) for the roadway are
planned to be operational prior to the facilities on the airfield.
Temporary Sediment and Erosion Control measures are proposed and are
illustrated on the plans. This project has obtained an approved NCDENR
sediment and erosion control permit based on the attached plans.
Storm Water Management Facilities
Permanent drainage facilities have been proposed in accordance with the various
governing jurisdictions for this project. Storm water conveyance on the airport's
airfield has been designed in accordance with FAA criteria to pass the 10-year
design storm. Drainage for the roadway relocation has been designed in
accordance with NCDOT criteria to pass the 50-year storm for cross pipes, and
the 10-year storm for roadway systems. In addition, because of the proximity to
Interstate 485, NCDOT has required a 100-year check on the systems to prevent
overtopping on I-485. Lastly, the onsite systems are designed in accordance with
City of Charlotte Land Development Peak Discharge control to limit the 2-year
and 10-year storm events to the pre-development peak discharges. To
accommodate this requirement, detention facilities are located on the airfield to
attenuate the discharge. These areas have been modified to act as extended dry
detention basins for water quality control as well.
Permanent post-construction site runoff control has been planned to take
advantage of the site requirements for runway and taxiway operations per FAA
requirements, and to work within the limitations of the site layout. In addition,
FAA requirements prevent some of the more acceptable BMPs (i.e. wet ponds are
prohibited within 10,000 feet of an airfield). Given these requirements and site
characteristics, the proposed site runoff controls for storm water treatment
consist of the following:
¦ Filter Strips - Grass shoulders along the runway and taxiway pavements,
graded at 3% slope, will serve as a filter strip. The longitudinal slope of
these pavements supports runoff in a laminar flow. These shoulders range
from 70 feet to 200 feet in width. TSS removal for each 50 feet of filter strip
is projected at 25%, and N removal at 25%.
¦ Grassed Swales - The site design includes perimeter swales at mild slopes
to collect runoff from the grass shoulders (Filter Strip) and transport it to a
proposed drainage inlet, or a fill slope flume. The longitudinal slope is 2%
or less, and will serve as a water quality device. TSS removal for grassed
swales is projected at 35%, with N removal at 20%.
¦ Extended Dry Detention Basins - These basins will also serve for peak
discharge control. These basins will have a sand filter bottom with an
underdrain system to allow for higher efficiency in pollutant removal, and
to prevent standing water. TSS removal is projected at 50%, while N
removal is 10%.
¦ Pavement Sweeping with Vacuum - This non-structural BMP will be
employed on a frequent basis, in accordance with the operation and
management plan. Because of FAA requirements for airfield safety, this
practice is a common occurrence with CDIA, and will be performed on a
weekly basis. CDIA proposes the purchase of a Vacuum Sweeper that will
have a TSS removal performance of 78%, and N removal of 60%. A copy
of the type proposed is included in the SWMP submittal.
¦ Bioretention - The design will incorporate grass as the growing media for
TSS removal performance. This has a removal of 85 % for TSS. This
design has the ability to be installed in a compacted area along a road
side. A filter strip will lead the stormwater to the bioretention basin.
Supporting Calculations of Treatment Devices
A preliminary discussion with NCDENR DWQ staff has confirmed this project
shall follow the calculation procedure to be listed in the BMP Manual for
treatment train processes (i.e. BMPs in series). Supporting calculations are
attached in spreadsheet form to illustrate the use of the above BMPs throughout
the project. Plans are attached to illustrate where each BMP is located to allow
runoff from the pavement to go through a series of treatment devices prior to
discharging off-site. The calculations include the use of pavement sweeping as a
non-structural BMP.
Eleven drainage areas comprise the project area's stormwater runoff. Two of
those areas discharge to a water supply watershed which requires nutrient
removal (35% N and P). The other seven areas are designed to remove the
targeted 85% TSS goal.
FAA Requirements
TAXIWAY SAFETY AREAS
Design Standards. The taxiway safety area shall be:
(1) cleared and graded and have no potentially hazardous ruts, humps,
depressions, or other surface variations;
(2) drained by grading or storm sewers to prevent water accumulation;
(3) capable, under dry conditions, of supporting snow removal equipment,
aircraft rescue and firefighting equipment, and the occasional passage of aircraft
without causing structural damage to the aircraft, and
(4) free of objects, except for objects that need to be located in the taxiway safety
area because of their function. Objects higher than 3 inches (7.6 cm) above grade
should be constructed on low impact resistant supports (frangible mounted
structures) of the lowest practical height with the frangible point no higher than
3 inches (7.6 cm) above grade. Other objects, such as manholes, should be
constructed at grade. In no case should their height exceed 3 inches (7.6 cm)
above grade.
RUNWAY SAFETY AREAS
Design Standards. The runway safety area shall be:
(1) cleared and graded and have no potentially hazardous ruts, humps,
depressions, or other surface variations;
(2) drained by grading or storm sewers to prevent water accumulation;
(3) capable, under dry conditions, of supporting snow removal equipment,
aircraft rescue and firefighting equipment, and the occasional passage of aircraft
without causing structural damage to the aircraft; and
(4) free of objects, except for objects that need to be located in the runway safety
area because of their function. Objects higher than 3 inches (7.6 cm) above grade
should be constructed, to the extent practicable, on low impact resistant supports
(frangible mounted structures) of the lowest practical height with the frangible
point no higher than 3 inches (7.6 cm) above grade. Other objects, such as
manholes, should be constructed at grade. In no case should their height exceed
3 inches (7.6 cm) above grade.
CDIA SWMP
Area West of 2nd Parallel Runway
BMP Treatment Train Effeciency
Summarv
September 15, 2008
HDR Engineering, Inc
of the Carolinas

Outfall Total
Impervious
Area (Ac) 0
/o TSS
Removal 0
/o N
Removal o
/o P
Removal Weighted
Removal
m Eff.
Total Weighted Site

Composite
A 1.47 92% 1.35
B 16.58 91% 15.01
D 1.63 91% 1.49
E 0.00 0% 0.00
F 6.23 89% 5.56
G 26.65 88% 23.51
H 20.62 93% 19.21
K 32.20 88% 28.42
L 14.35 85% 68% 66% 12.25
M 5.24 91% 69% 67% 4.75
N 38.75 86% 33.35
P 9.82 94% 9.24
173.54 154.14 89%
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V
Sweep System-Power
Ei, 'pine
Make John Deere 4045 Tier 11
Type 4 cylinder Turbocharged Diesel
Displacement 276 in' (4.5 L)
Horsepower 99 (75 kW) D 2500 RPM
Fuel Tank Capacity 50 gal (189 L)
Air Cleaner Two stage, dry type
Oil Filter .Spin-on, full flow
Auto Shutdown for high temp/low oil pressure
with visual indicator
Engine Pre-Cleaner Standard
Sweep System-Components
Instruirentation
Tachometer, hour meter, oil pressure, fuel, volt-
meter, engine temperature, air intake restriction
indicator, hydraulic Filter restriction indicator,
low spray water, hopper up, full load indicator
General Specifications
Sweeping path:
Suction nozzle only
30 in (762 nun)
Suction nozzle and one side broom
50 in (1.270 mm)
Suction nozzle and extension broom
83 in (2108 mm)
Suction nozzle, side and extension broom
102 in (2591 mm)
Glower
Drive Fluid Coupler
Speed 2500 RPM
Blower Rating 15,560 CFM (441 m'/min.)
@2500 RPM
Blower Construction Abrasion resistant
steel vanes
Blower Housing 10 gauge (3.4 mm), rubber
lined for extended wear
Vacuum Nozzle and Hoses
Nozzle width 30 in (762 mm)
Pickup Area 174 in' (1119 cm')
Construction Abrasion resistant
steel components
Hose Connection Quick disconnect type at
lower area near pickup head
I-lose Construction Flexible rubber, steel
reinforced smooth bore
Hose 11 in (280 mm) inside diameter
Automatic Shutter Door
Options
Side Groom
Diameter 28 in (711 mm)
Disc Construction Steel plate
Speed Constant
Drive Hydraulic motor, protected by relief valve
Mounting Free floating trailing arm
Adjustment Inward/outward, forward/backward
Digging Pressure/Wear Control Pneumatic
in cab
Lift Control Pneumatic from control panel
Type Segment set disposable
Material Oil tempered steel wire
Extension Broom
Diameter 16 in (406 min)
Length 60 in (1524 nun)
Speed Constant, non-reversible
Drive Hydraulic motor, protected by relief valve
Digging Pressure/Wear Control Pneumatic
in cab
Lift Control Pneumatic from control panel
Type Polypropylene prefab, disposable
Location Center of sweeper
Hydraulic System
Purpose Powers hydraulic motors on side
broom, extension broom, and hopper cycle
Hydraulic Pump Capacity 16 GPM (61 LPM)
0 2500 RPM
Hydraulic Pump Direct gear driven, tandem
type
Reservoir Capacity 23 gal (87 L)
Filter 10 micron, spin-on type with in-cab
restriction indicator
Electrical System
Alternator 120 amperes
Battery 12 volt, group 31, 1000 CCA
Lights Side broom, rear clearance, rear
identification
Reversing Safety Electric back-up alarm, sweep
components raise automatically
Circuit Breaker Auto reset
Wiring Harnesses Color coded, hot stamped
and labeled even 4 in 000mm)
Debris Hopper
Volumetric Capacity 8.0 yds' (6.0 m`)
Floor Angle 10°
Dump Angle 60°
Construction 7 gauge ( 4.5mm) steel sides and
top, 7 gauge (4.5mm) steel floor
Lifting Double acting hydraulic cylinder
Hopper Dump Door Opens and doses
hydraulically, latches automatically
Clearance required when dumping 13 ft 1 in
(3988 mm)
Full load indicator Weight actuated with
in-cab warning light
Hinged Hopper Screens
Safety prop Steel bar under body
Spray Water System
Water Tank Construction Polyethylene,
removable
Water Tank Capacity 330 gal (1250 Q
Pump Type Centrifugal with run-dry capability
Pump Capacity 5 GPM (19 LPM)
Pump Pressure 40 PSI (2.8 bar)
Spray Nozzles 7 inside each suction nozzle
4 at extension broom
2 at each side broom
Controls Variable flow switches located on
control panel
Filter 100 mesh, cleanable
Anti-Siphon Fill Standard
Hydrant Fill Hose 16 h 8 in (5080 mm) with
coupling
Standard Equipment
Washdown Hose 25 ft (7620 mm) with nozzle
Paint Chassis Warranty
Dual Sweeping Left Side Broom Tilt
side vacuum nozzle Front Spray Bar
and hose assembly, Stainless Steel Hopper
side broom, water Floor, Sides and
system, pivoting Rear Door
extension broom Epoxy Hopper Liner
Wandering Hose 8 in. Inspection Door
(203 mutt.) inside Hydraulic Aux. Pump
diameter, 12 ft. Rear Flood Light(s)
(3658 mm.) long, Rotating Beacon Light
hydraulic power Infinitely Variable
assisted, boom Side Broom
supported Speed
Automatic Lubrication Beacon or Flood Light
System Protector
Diesel Cold Weather High Pressure Wash
Start Aid Down
Powder Coated, start- Consult factory Sweeper
dard Elgin white and 1 year parts and labor
gray (for other colors Engine
consult factory) Consult factory
Your Elgin Dealer is:
Printed in UYA. 62006 Federal Signal Corporation
Federal Signal Corporation is listed on the NYSE by the symbol FSS.
'f "1? _?
Elgin Sweeper Company
1300 W. Bartlett Rd.
Elgin, Illinois, U.S.A. 60120-7529
847-741-5370 Phone
847-742-3035 Fax
www.eiginsweeper.com
Effective 4106 P/N: 0705241-1
Specifications subject to change without notice
a?
e.>
7
cn "
E t
f `? y
5
r
6-- i
- 1
4 ?
If
Street and Parking Lot Sweeping
Urban streets and parking lots can accumulate large amounts of pollutants that can be
washed off during storm events. Streets and parking lots comprise a significant portion of the
total impervious area within a developed watershed, and a large percentage, if not the entire area,
of streets and parking lots are usually directly connected to the storm drain system. In an
investigation conducted by Bannerman (Bannerman et al, 1993), data on runoff volumes from
streets and parking lots collected during 4 years from two urbanized areas in Wisconsin indicated
that 54 percent of the total runoff volume from residential areas was due to direct runoff from
streets and parking lots, and that 80 percent of the total runoff volume from commercial areas was
due to direct runoff from streets and parking lots. A breakdown of the runoff volumes based on
source area is shown in Table 5-1.
Table 5-1. Percent Runoff Volumes Contributed by Source Area in Two Urbanized Areas
of Wisconsin
Source Area Percent Runoff Contribution
Feeder Collector Arterial Parking Total % due Total
Land Use Streets Streets Streets Lots to roads and Other %*
parking lots
Residential 34 20 -- -- 54 46
Commercial -- 10 21 49 80 20
* Other land uses include lawns, driveways, rooftops and sidewalks
Source: Adapted from Bannerman et al, 1993
Furthermore, Bannerman found that runoff from streets and parking lots contributed a
significant portion of the total runoff pollutant loading. Table 5-2 summarizes the pollutant load
contributions based on land uses, and indicates the total contaminant contribution in the urbanized
area attributable to runoff from streets and parking lots.
5-34
Table 5-2. Contaminant Load Percentages in Two Urbanized Areas of Wisconsin
Percent Contribution by Source Area Total
C
t
i
t
nan
on
am
Residential Commercial Industrial Contribution
by Streets
Contaminant
Streets Parking
Lots
Streets Parking
Lots
Streets Parking
Lots and
Parking Lots
Total Solids 76 -- 57 31 20 60 78
Suspended 80 -- 68 27 25 55 80
Solids
Total 58 -- 56 28 19 29 (5)
Phosphorus
Dissolved 46 -- 50 27 18 11 39
Phosphorus
Dissolved 73 -- 50 39 16 73 82
Copper
Total Copper 78 -- 60 32 22 67 85
Total Zinc 80 -- 45 32 9 30 49
Fecal 78 -- 82 10 10 19 71
Coliform
Source: Adapted from Bannerman et al, 1993
Based on these data, streets and parking lots can contribute significant pollutant loadings
to urban runoff. Therefore, sweeping programs that can remove a portion of these materials from
streets and parking lots may significantly reduce the pollutant load contributions to urban runoff.
Road and Ditch Maintenance
Road and street surfaces undergo breakdown due to frictional action of traffic, freeze-
thaw breakdown, frost heaving, and erosion of road subbase. Failure to correct deteriorating
pavement can allow exposure of unstabilized subbase material to erosive forces of water and
subsequent increases in suspended solids concentrations. The same process occurs in roadside
ditches where high runoff rates cause channelization and erosion. Roadside ditches also
accumulate sediment and debris from the road surface, which enters runoff during rainfall events.
Maintenance of roads and cleaning and stabilization of ditches can help to reduce pollutant
loadings from these sources. In roadside ditches, reducing the length and slope of ditch runs and
5-35
III. REQUIRED ITEMS CHECKLIST
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
txx 1. Plans (1" - 50' or larger) of the entire site showing:
v - Design at ultimate build-out,
- Off-site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Forebay (if applicable),
- High flow bypass system,
- Maintenance access,
- Proposed drainage easement and public right of way (ROW), and
- Boundaries of drainage easement.
2. Plan details (1" = 30' or larger) for the level spreader showing:
- Forebay (if applicable),
- High flow bypass system,
- One foot topo lines between the level lip and top of stream bank,
- Proposed drainage easement, and
- Design at ultimate build-out.
3. Section view of the level spreader (1" = 20' or larger) showing:
- Underdrain system (if applicable),
- Level lip,
- Upslope channel, and
- Downslope filter fabric.
4. A date-stamped photograph of the filter strip that clearly shows the type of vegetation that is present.
frO?Qc,-k N&? Comsir'jcilb +ef-
5. A construction sequence that shows how the level spreader will be protected from sediment until the entire
v drainage area is stabilized.
6. The supporting calculations.
?GL 7. A copy of the signed and notarized operation and maintenance (0&M) agreement.
11 N A' 8. A copy of the deed restrictions (if required)
Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5 Part III, page 1 of 1
d° TEpG
AVA
o
MCD"
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be completely filled out, printed and submitted.
DO NOT FORGET TO ATTACH THE REQUIRED ITEMS CHECKLIST AND ALL REQUIRED ITEMS (NEXT WORKSHEET)t
11. PROJECT INFORMATION
Project name CUTA SWMP Area West of 2nd Parallel
Contact name Ron Gieger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number VIABCD
Ill. DESIGN INFORMATION
For Level Spreaders Receiving Flow From a BMP n a
Type of BMP Vacuum Sweeping
Drawdown flow from the BMP n/a cfs
For Level Spreaders Receiving Flow from the Drainage Area
Drainage area
Impervious surface area
Percent impervious
Rational C coefficient
Peak flow from the 1 in/hr storm
Time of concentration
Rainfall intensity, 10-yr storm
Peak flow from the 10-yr storm
n/a
ftz
ftz
cfs
min
in/hr
cfs
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Where Does the Level Spreader Discharge?
To a grassed bioretention cell?
To a mulched bioretention cell?
To a wetland?
To a filter strip or riparian buffer?
Other (specify)
Filter Strip or Riparian Buffer Characterization (if applicable)
Width of grass
Width of dense ground cover
Width of wooded vegetation
Total width
Elevation at downslope base of level lip
Elevation at top of bank of the receiving water
Slope (from level lip to to top of bank)
Are any draws present?
Level Spreader Design
Forebay surface area
Feet of level lip needed per cfs
Answer "Y" to one of the following:
Length based on the 1 in/hr storm?
Length based on the 10-yr storm?
Length based on the BMP discharge rate?
Design flow
Is a bypass device provided?
Length of the level lip
Are level spreaders in series?
n/a
(Y or N)
(Y or N)
(Y or N)
(Y or N)
30.00 ft
0.00 ft
0.00 ft
30.00 ft
730.00 fmsl
728.00 fmsl
6.67 %
N (Y or N)
n/a
sq ft
13 ft/cfs
(Y or N)
(Y or N)
(Y or N)
cfs
(Y or N)
ft
(Y or N)
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Note: Vacum Sweeping is being used
OK
No forebay is needed.
Bypass Channel Design (if applicable)
Does the bypass discharge through a wetland?
Does the channel enter the stream at an angle?
Dimensions of the channel (see diagram below):
M
B
W
y
Peak velocity in the channel during the 10-yr storm
Channel lining material
nla
(Y or N)
(Y or N)
ft
ft
ft
ft
cfs
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
AF-A
NCDD*t
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be completely filled out, printed and submitted.
DO NOT FORGET TO ATTACH THE REQUIRED ITEMS CHECKLIST AND ALL REQUIRED ITEMS (NEXT WORKSHEET)I
°p W"iFh.O
I. PROJECT INFORMATION
Project name 1F' red o r
Contact name Ron Gieger
Phone number 704338-6825
Date " eptember 15, 2008
Drainage area number V1ABCD
B. DESIGN INFORMATION
For Level Spreaders Receiving Flow From a BMP
Type of BMP Vacuum Sweeping
Drawdown flow from the BMP n/a cfs
For Level Spreaders Receiving Flow from the Drainage Area
Drainage area
Impervious surface area
Percent impervious
Rational C coefficient
Peak flow from the 1 in/hr storm
Time of concentration
Rainfall intensity, 10-yr storm
Peak flow from the 10-yr storm
Where Does the Level Spreader Discharge ?
To a grassed bioretention cell?
To a mulched bioretention cell?
To a wetland?
To a filter strip or riparian buffer?
Other (specify)
Filter Strip or Riparian Buffer Characterization (if applicable)
Width of grass
Width of dense ground cover
Width of wooded vegetation
Total width
Elevation at downslope base of level lip
Elevation at top of bank of the receiving water
Slope (from level lip to to top of bank)
Are any draws present?
Level Spreader Design
Forebay surface area
Feet of level lip needed per cfs
Answer "Y" to one of the following:
Length based on the 1 in/hr storm?
Length based on the 10-yr storm?
Length based on the BMP discharge rate?
Design flow
Is a bypass device provided?
Length of the level lip
Are level spreaders in series?
n/a
ffz
ftz
cfs
min
in/hr
cfs
n/a
(Y or N)
(Y or N)
(Y or N)
(Y or N)
n/a
30.00 ft
0.00 ft
0.00 ft
30.00 ft
725.00 fmsl
724.00 fmsl
3.33 %
N (Y or N)
n/a
sq ft
13 ft/cfs
(Y or N)
(Y or N)
(Y or N)
cfs
(Y or N)
ft
(Y or N)
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Note: Vacum Sweeping is being used
OK
OK
No forebay is needed.
Bypass Channel Design (if applicable)
Does the bypass discharge through a wetland?
Does the channel enter the stream at an angle?
Dimensions of the channel (see diagram below):
M
B
W
y
Peak velocity in the channel during the 10-yr storm
Channel lining material
nla
(Y or N)
(Y or N)
ft
ft
ft
ft
cfs
W*O3
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be completely filled out, printed and submitted.
DO NOT FORGET TO ATTACH THE REQUIRED ITEMS CHECKLIST AND ALL REQUIRED ITEMS (NEXT WORKSHEET)!
`°f 'N?iEq
G
L 4
f. PROJECT INFORMATION
Project name CDIA SWMP Area West of 2nd Parallel
Contact name Ron Gieger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number VIABCD
Ill. DESIGN INFORMATION
For Level Spreaders Receiving Flow From a BMP nia
Type of BMP Vacuum Sweeping
Drawdown flow from the BMP n/a cfs
For Level Spreaders Receiving Flow from the Drainage Area
Drainage area
Impervious surface area
Percent impervious
Rational C coefficient
Peak flow from the 1 in/hr storm
Time of concentration
Rainfall intensity, 10-yr storm
Peak flow from the 10-yr storm
Where Does the Level Spreader Discharge ?
To a grassed bioretention cell?
To a mulched bioretention cell?
To a wetland?
To a filter strip or riparian buffer?
Other (specify)
Filter Strip or Riparian Buffer Characterization (if applicable)
Width of grass
Width of dense ground cover
Width of wooded vegetation
Total width
Elevation at downslope base of level lip
Elevation at top of bank of the receiving water
Slope (from level lip to to top of bank)
Are any draws present?
Level Spreader Design
Forebay surface area
Feet of level lip needed per cfs
Answer "Y" to one of the following:
Length based on the 1 in/hr storm?
Length based on the 10-yr storm?
Length based on the BMP discharge rate?
Design flow
Is a bypass device provided?
Length of the level lip
Are level spreaders in series?
n/a
fe
ft
cfs
min
in/hr
cfs
n/a
(Y or N)
(Y or N)
(Y or N)
(Y or N)
30.00 ft
0.00 It
0.00 ft
30.00 ft
718.00 fmsl
716.50 fmsl
5.00 %
N (Y or N)
n/a
sg ft
13 f lcfs
(Y or N)
(Y or N)
(Y or N)
cfs
(Y or N)
It
(Y or N)
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Note: Vacuum Sweeping is being used
OK
OK
No forebay is needed.
Bypass Channel Design (if applicable)
Does the bypass discharge through a wetland?
Does the channel enter the stream at an angle?
Dimensions of the channel (see diagram below):
M
B
W
y
Peak velocity in the channel during the 10-yr storm
Channel lining material
n/a
(Y or N)
(Y or N)
ft
ft
ft
ft
cfs
?F
?p" TpR
?Z
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be completely filled out, printed and submitted.
DO NOT FORGET TO ATTACH THE REQUIRED ITEMS CHECKLIST AND ALL REQUIRED ITEMS (NEXT WORKSHEET)I
I. PROJECT INFORMATION
Project name CDIA % 'Air. r""cat of W r'aroilel
Contact name Ron Gieger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number VIABCD
II. DESIGN INFORMATION
For Level Spreaders Receiving Flow From a BMP
Type of BMP Vacuum Sweeping
Drawdown flow from the BMP n/a cfs
For Level Spreaders Receiving Flow from the Drainage Area n/a Do not complete this section of the worksheet.
Drainage area lit, Do not complete this section of the worksheet.
Impervious surface area fe Do not complete this section of the worksheet.
Percent impervious % Do not complete this section of the worksheet.
Rational C coefficient Do not complete this section of the worksheet.
Peak flow from the 1 in/hr storm cis Do not complete this section of the worksheet.
Time of concentration min
Rainfall intensity, 10-yr storm in/hr Do not complete this section of the worksheet.
Peak flow from the 10-yr storm cfs Do not complete this section of the worksheet.
Where Does the Level Spreader Discharge?
To a grassed bioretention cell?
To a mulched bioretention cell?
To a wetland?
To a filter strip or riparian buffer?
Other (specify)
Filter Strip or Riparian Buffer Characterization (if applicable)
Width of grass
Width of dense ground cover
Width of wooded vegetation
Total width
Elevation at downslope base of level lip
Elevation at top of bank of the receiving water
Slope (from level lip to to top of bank)
Are any draws present?
Level Spreader Design
Forebay surface area
Feet of level lip needed per cfs
Answer "Y" to one of the following:
Length based on the 1 in/hr storm?
Length based on the 10-yr storm?
Length based on the BMP discharge rate?
Design flow
Is a bypass device provided?
Length of the level lip
Are level spreaders in series?
n/a
(Y or N)
(Y or N)
(Y or N)
(Y or N)
30.00 ft
0.00 ft
0.00 ft
30.00 ft
707.00 fmsl
705.00 fmsl
6.67 %
N (Y or N)
n/a
sq ft
13 ft/cfs
(Y or N)
(Y or N)
(Y or N)
cis
(Y or N)
it
(Y or N)
Note: Vacum Sweeping is being used
OK
No forebay is needed.
Bypass Channel Design (if applicable)
Does the bypass discharge through a wetland?
Does the channel enter the stream at an angle?
Dimensions of the channel (see diagram below):
M
B
W
y
Peak velocity in the channel during the 10-yr storm
Channel lining material
nla
(Y or N)
(Y or N)
ft
ft
ft
ft
cfs
:+??
MCD"
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be completely filled out, printed and submitted.
DO NOT FORGET TO ATTACH THE REQUIRED ITEMS CHECKLIST AND ALL REQUIRED ITEMS (NEXT WORKSHEET)I
ATfq
G
I. PROJECT INFORMATION
Project name 1 ,!A 0,,Nlr Afed West uf L(iu FBraiiei
Contact name Ron Gieger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number VIABCD
IL DESIGN INFORMATION
For Level Spreaders Receiving Flow From a BMP
Type of BMP Vacuum Sweeping
Drawdown flow from the BMP n/a cfs
For Level Spreaders Receiving Flow from the Drainage Area
Drainage area
Impervious surface area
Percent impervious
Rational C coefficient
Peak flow from the 1 in/hr storm
Time of concentration
Rainfall intensity, 10-yr storm
Peak flow from the 10-yr storm
Where Does the Level Spreader Discharge ?
To a grassed bioretention cell?
To a mulched bioretention cell?
To a wetland?
To a filter strip or riparian buffer?
Other (specify)
Filter Strip or Riparian Buffer Characterization (if applicable)
Width of grass
Width of dense ground cover
Width of wooded vegetation
Total width
Elevation at downslope base of level lip
Elevation at top of bank of the receiving water
Slope (from level lip to to top of bank)
Are any draws present?
Level Spreader Design
Forebay surface area
Feet of level lip needed per cis
Answer "Y" to one of the following:
Length based on the 1 in/hr storm?
Length based on the 10-yr storm?
Length based on the BMP discharge rate?
Design flow
Is a bypass device provided?
Length of the level lip
Are level spreaders in series?
n/a
fe
fe
cfs
min
m/hr
cfs
n/a
(Y or N)
(Y or N)
(Y or N)
(Y or N)
30.00 It
0.00 It
0.00 ft
30.00 ft
715.00 fmsl
711.00 fmsl
13.33 %
N (Y or N)
n/a
sq ft
13 ft/cfs
(Y or N)
(Y or N)
(Y or N)
cfs
(Y or N)
ft
(Y or N)
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Note: Vacum Sweeping is being used
Level spreaders must be placed in series.
OK
No forebay is needed.
Bypass Channel Design (if applicable)
Does the bypass discharge through a wetland?
Does the channel enter the stream at an angle?
Dimensions of the channel (see diagram below):
M
B
W
y
Peak velocity in the channel during the 10-yr storm
Channel lining material
nla
(Y or N)
(Y or N)
ft
ft
ft
ft
cfs
AW .4?0' TE9
llD 6
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be completely filled out, printed and submitted.
DO NOT FORGET TO ATTACH THE REQUIRED ITEMS CHECKLIST AND ALL REQUIRED ITEMS (NEXT WORKSHEET)I
11. PROJECT INFORMATION
Project name UDiA J'A IF Area Ate6( of 2nd Faiallei
Contact name Ron Gieger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number VIABCD
II. DESIGN INFORMATION "
For Level Spreaders Receiving Flow From a BMP n,
Type of BMP Vacuum Sweeping
Drawdown flow from the BMP n/a cfs
For Level Spreaders Receiving Flow from the Drainage Area
Drainage area
Impervious surface area
Percent impervious
Rational C coefficient
Peak flow from the 1 in/hr storm
Time of concentration
Rainfall intensity, 10-yr storm
Peak flow from the 10-yr storm
n/a
It,
fe
cfs
min
in/hr
cfs
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Where Does the Level Spreader Discharge ?
To a grassed bioretention cell?
To a mulched bioretention cell?
To a wetland?
To a filter strip or riparian buffer?
Other (specify)
Filter Strip or Riparian Buffer Characterization (if applicable)
Width of grass
Width of dense ground cover
Width of wooded vegetation
Total width
Elevation at downslope base of level lip
Elevation at top of bank of the receiving water
Slope (from level lip to to top of bank)
Are any draws present?
Level Spreader Design
Forebay surface area
Feet of level lip needed per cfs
Answer "Y" to one of the following:
Length based on the 1 in/hr storm?
Length based on the 10-yr storm?
Length based on the BMP discharge rate?
Design flow
Is a bypass device provided?
Length of the level lip
Are level spreaders in series?
n/a (Y or N)
n/a (Y or N)
n/a (Y or N)
n/a (Y or N)
n/a
30.00 ft
0.00 ft
0.00 ft
30.00 ft
735.00 fmsl
731.00 fmsl
13.33 %
N (Y or N)
n/a
sq ft
13 ft/cfs
(Y or N)
(Y or N)
(Y or N)
cfs
(Y or N)
ft
(Y or N)
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Note: Vacum Sweeping is being used
Level spreaders must be placed in series.
OK
No forebay is needed.
Bypass Channel Design (if applicable)
Does the bypass discharge through a wetland?
Does the channel enter the stream at an angle?
Dimensions of the channel (see diagram below):
M
B
W
y
Peak velocity in the channel during the 10-yr storm
Channel lining material
nla
(Y or N)
(Y or N)
It
ft
It
ft
cfs
CDIA SWMP
Area West of 2nd Parallel Runway
Filter Strio Worksheet
September 15, 2008
HDR Engineering, Inc
of the Carolinas
ID # Sub-Basin
ID Drainage
Area Ac. Impervious
Area Ac. Minimum
Len th Ft. Plan
Len th Ft. Results
V1 V1ABCD 13.49 8.8 879.0 3486 Good
V2 V2A 5.32 3.7 373.0 1428 Good
V2 V26 7.32 4.8 475.8 2282 Good
V2 V2C 5.07 3.6 360.3 1317 Good
V3 Ms 1.16 1.0 97.0 330 , Good
V4 V4n 1.86 1.09 109.4 615 Good
V4 V4s 1.88 1.23 123.0 654 Good
V5 V5n 2.11 1.26 125.7 653 Good
V5 V5s 1.99 1.27 126.9 653 Good
V6 V6s 1.08 0.72 71.9 311 Good
V7 V7 3.18 2.0 202.0 1000 Good
V8 V8 3.01 2.0 195.0 1000 Good
Note:
All other Filter Strips on this project have been previously approved
by DWQ in March 2007, and therefore worksheets are not included.
Permit No:
• (to be assigned by DWQ)
III. REQUIRED ITEMS CHECKLIST
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package
. will result in a request for additional information. This will delay final review and approval of the project. Initial in the space
• provided to indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial
below. If a requirement has not been met, attach justification.
Initials Pagel Plan
• Sheet No.
1. Plans (1" = 50' or larger) of the entire site showing:
- Design at ultimate build-out,
- Off-site drainage (if applicable),
• - Delineated drainage basins (include Rational C coefficient per basin),
- Swale dimensions (width, length, depth),
- Maintenance access,
- Proposed drainage easement and public right of way (ROW),
• - Grass species, and
- Boundaries of drainage easement.
• be, 2. Plan details (1" = 50' or larger) for the grassed swale showing:
- Swale dimensions (width, length, depth),
- Maintenance access,
- Proposed drainage easement and public right of way (ROW),
. - Design at ultimate build-out,
- Grass species,
- Off-site drainage (if applicable),and
. - Boundaries of drainage easement.
1 f (? 3. Section view of the grassed swale (1" = 20' or larger) showing:
- Side slopes,
- Longitudinal slope,
• - Freeboard
- Swale dimensions, and
- SHWT level(s)
b (,. 4. Supporting calculations (including maximum velocity calculations for applicable storms)
• 1 b-C. _ 5. A copy of the signed and notarized operation and maintenance (0&M) agreement.
6. A copy of the deed restrictions (if required).
• SW401-Grassed Swale-Rev.3 Part III, Page 1 of 1
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Permit Number:
(to be provided by DWQ)
?p4 wnrtp
?.,??A oL
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part 111) must also be filled out, printed and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name CDiA bVVMP Area West of 2nd Parallel Runway
Contact name Ron Geiger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number F01Aw
IL DESIGN INFORMATION
Site Characteristics
Drainage area 2R,'s8.0 ft'
Impervious area 19,602.00 ft
Percent impervious 22.2%%
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth 4.81 in
10-yr storm intensity 0.20 in/hr
Post-development 10-yr storm peak flow 3.15 ft3/sec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.50 fUsec
Soil characteristics (enter Y below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter Y below)
Bermuda
Tall fescue x
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below
Option 1: Curb Outlet Swale: n (Y or N)
Maximum velocity
Side slopes 1
Swale length ft
Option 2: Conveyance Swale, Seeking Pollutant Credit: y (Y or N)
Maximum velocity for 10-yr storm 1.00 ft/sec
Side slopes 5.00 :1
Swale length 1,200.00 ft
OK
OK
OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 1 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the swale
Width of the top of the swale
Additional Information
Is the swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a recorded
access easement to a public Right of Way (ROW)?
What is the distance from the bottom of the swale to the SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the swale?
What is the SHWT elevation?
What is the longitudinal slope of the swale?
What is the depth of freeboard?
2.00 ft
12 00 ft
Y (Y or N)
Y (Y or N)
2.00 ft
703.50 fmsl
702.00 fmsl
700.00 fmsl
0.33%
0.50 ft
Insufficient sizing
Insufficient ROW location.
OK
OK
OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 2 of 62
Permit Number:
(to be provided by DWQ)
??? m?OF W A T?cyOl.
WCD1lM o? t
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must also be filled out, printed and submitted along with all of the required information.
1. PROJECT INFORMATION
Project name CI . t.1F rep' ? tof nd Parallel Rimway
Contact name Ron Geiger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number F01Ae
II. DESIGN INFORMATION
Site Characteristics
Drainage area 119,476.83 ft
Impervious area 19,602.00 ft
Percent impervious 16.4%%
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth 4.81 in
10-yr storm intensity 0.20 in/hr
Post-development 10-yr storm peak flow 3.15 ft3/sec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.50 ft/sec
Soil characteristics (enter Y below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter Y below)
Bermuda
Tall fescue X
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below:
Option 1: Curb Outlet Swale: n (Y or N)
Maximum velocity
Side slopes 1
Swale length ft
Option 2: Conveyance Swale, Seeking Pollutant Credit: Y (Y or N)
Maximum velocity for 10-yr storm 1.00 ft/sec
Side slopes 5.00 :1
Swale length 1,200.00 ft
OK
OK
OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 3 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the swale
Width of the top of the swale
Additional Information
Is the swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a recorded
access easement to a public Right of Way (ROW)?
What is the distance from the bottom of the swale to the SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the swale?
What is the SHWT elevation?
What is the longitudinal slope of the swale?
What is the depth of freeboard?
x
Z.UU it
12.00 ft
Y (Y or N) Insufficient sizing
Y (Y or N) Insufficient ROW location.
2.00 ft OK
703.50 fmsl
702.00 fmsl
700.00 fmsl
0.33% OK
0.50 ft OK
Form SW401-Grassed Swale-Rev. 3 Parts I and II. Project Design Summary, Page 4 of 62
Permit Number:
(to be provided by DWQ)
OI V
STORMWATER MANAGEMENT PERMIT APPLICATION FORM `
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must also be filled out, printed and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name DIA , ',11P .;i- 3 _ e;t of -rd Parallel Runway
Contact name Pon Geiger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number F01 Bnw
I DE51GN INFORMATION
Site Characteristics
Drainage area 23,073.66 ft2
Impervious area 8,058.60 ftz
Percent impervious 34.9%%
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth 4.81 in
10-yr storm intensity 0.20 in/hr
Post-development 10-yr storm peak flow 1.30 ft3/sec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.50 ft/sec
Soil characteristics (enter Y below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter Y below)
Bermuda
Tall fescue x
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below:
Option 1: Curb Outlet Swale: n (Y or N)
Maximum velocity
Side slopes
Swale length ft
Option 2: Conveyance Swale, Seeking Pollutant Credit: Y (Y or N)
Maximum velocity for 10-yr storm 1.00 ftlsec
Side slopes 5.00 :1
Swale length 500.00 ft
OK
OK
OK
Form SW401-Grassed Swale-Rev.3 Parts I and It. Project Design Summary, Page 5 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal x
Parabolic
V-shaped
Width of the bottom of the swale 2.00 ft
Width of the top of the swale 12.00 ft
Additional Information
Is the swale sized for all runoff from ultimate build-out? Y (Y or N) Insufficient sizing
Is the BMP located in a proposed drainage easement with a recorded

access easement to a public Right of Way (ROW)? Y (Y or N) Insufficient ROW location.
What is the distance from the bottom of the swale to the SHWT? 2.00 ft OK
What is the ground level elevation? 700.50 fmsl
What is the elevation of the bottom of the swale? 699.00 fmsl
What is the SHWT elevation? 697.00 fmsl SHWT not found in Boring Logs
What is the longitudinal slope of the swale? 0.60% OK
What is the depth of freeboard? 0.50 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 6 of 62
Permit Number:
(to be provided by DWQ)
..,,JaaOF WATCH
ooj
H= NR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must also be filled out, printed and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name CDIA'YvMPr iea'vveolUi 2 d Pafaiiei Rw'way
Contact name Ron Geiger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number F01 Bne
II. DESIGN INFORMATION
Site Characteristics
Drainage area 72,594.26 ft2
Impervious area 8,058.60 ft
Percent impervious 11.1% %
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth 4.81 in
10-yr storm intensity 0.20 in/hr
Post-development 10-yr storm peak flow 1.30 Wlsec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.50 ft/sec
Soil characteristics (enter Y below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter Y below)
Bermuda
Tall fescue x
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below
Option 1: Curb Outlet Swale: n (Y or N)
Maximum velocity
Side slopes
Swale length ft
Option 2: Conveyance Swale, Seeking Pollutant Credit: y (Y or N)
Maximum velocity for 10-yr storm 1.00 ft/sec
Side slopes 5.00 :1
Swale length 500.00 ft
OK
OK
OK
Form SW401-Grassed Swale-Rev.3 Parts I and 11. Project Design Summary, Page 7 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the swale
Width of the top of the swale
Additional Information
Is the swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a recorded
access easement to a public Right of Way (ROW)?
What is the distance from the bottom of the swale to the SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the swale?
What is the SHWT elevation?
What is the longitudinal slope of the swale?
What is the depth of freeboard?
x
Y (Y or N)
Y (Y or N)
2.00 ft
700.50 fmsl
699.00 fmsl
697.00 fmsl
0.60%
0.50 ft
Insufficient sizing
Insufficient ROW location.
OK
SHWT not found in Boring Logs
OK
OK
Form SW401-Grassed Swale-Rev.3 Parts I and 11. Project Design Summary, Page 8 of 62
Permit Number:
(to be provided by DWQ)
?OF ?aTeH
Oq
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part Ill) must also be filled out, printed and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name VDi b'vvtvlr nfea w"vest ui 2nd F'CiaiiCi nUiiwBy
Contact name Ron Geiger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number F01 Bsw
II. DESIGN INFORMATION
Site Characteristics
Drainage area 18,070.25 ft2
Impervious area 7,840.80 ft
Percent impervious 43.4% %u
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth 4.81 in
10-yr storm intensity 0.20 in/hr
Post-development 10-yr storm peak flow 1.26 W/sec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.50 fUsec
Soil characteristics (enter "x" below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter "x" below)
Bermuda
Tall fescue x
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below:
Option 1: Curb Outlet Swale: n (Y or N)
Maximum velocity
Side slopes :1
Swale length ft
Option 2: Conveyance Swale Seeking Pollutant Credit: y (Y or N)
Maximum velocity for 10-yr storm 1.00 fUsec
Side slopes 5.00 :1
Swale length 490.00 ft
OK
OK
OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 9 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the swale
Width of the top of the swale
Additional Information
Is the swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a recorded
access easement to a public Right of Way (ROW)?
What is the distance from the bottom of the swale to the SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the Swale?
What is the SHWT elevation?
What is the longitudinal slope of the swale?
What is the depth of freeboard?
x
2.00 ft
12.00 ft
Y (Y or N) Insufficient sizing
Y (Y or N) Insufficient ROW location.
2.00 ft OK
700.50 fmsl
699.00 fmsl
697:00 fmsl SHWT not found in Boring Logs
2.24% OK
0.50 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 10 of 62
Permit Number:
(to be provided by DWQ)
OF WATFH
Or
ANA
IESTORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must also be filled out, printed and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name GbiA SVVIMP Ared Vitbt of 2nd Parallel Runway
Contact name Ron Geiger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number F01 Bse
II. DESIGN INFORMATION
Site Characteristics
Drainage area 58,258.74 ft2
Impervious area 7,840,80 ft
Percent impervious 13.5%%
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth 4.81 in
10-yr storm intensity 0.20 in/hr
Post-development 10-yr storm peak flow 1.26 ft3lsec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.50 ft/sec:
Soil characteristics (enter "x" below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter "x" below)
Bermuda
Tall fescue x
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below:
Option 1: Curb Outlet Swale: n (Y or N)
Maximum velocity
Side slopes :1
Swale length ft
Option 2: Conveyance Swale, Seeking Pollutant Credit: y (Y or N)
Maximum velocity for 10-yr storm 1.00 ftfsec OK
Side slopes 5.00 :1 OK
Swale length 490.00 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and 11. Project Design Summary, Page 11 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the swale
Width of the top of the swale
Additional Information
Is the swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a recorded
access easement to a public Right of Way (ROW)?
What is the distance from the bottom of the swale to the SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the swale?
What is the SHWT elevation?
What is the longitudinal slope of the swale?
What is the depth of freeboard?
x
Y (Y or N) Insufficient sizing
Y (Y or N) Insufficient ROW location.
2.00 ft OK
700.50 fmsl
699.00 fmsl
697.00 fmsl SHWT not found in Boring Logs
2.24% OK
0.50 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 12 of 62
Permit Number:
(to be provided by DWQ)
O?
?L?wi'? ? of warEq
P
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part 111) must also be filled out, printed and submitted along with all of the required
information.
I. PROJECT INFORMATION
Project name CDIA SWMP Area West or 2nd Parallel Runway
Contact name Ron Geiger
Phone number 704-388-6825
Date September 8, 2008
Drainage area number 911512008
II. DESIGN INFORMATION
Site Characteristics
Drainage area 21,379.80 ft
Impervious area 16,117.20 ft
Percent impervious 75.4%%
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth 4.81 in
10-yr storm intensity 0.02 in/hr
Post-development 10-yr storm peak flow 2.59 ft3/sec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.50 fUsec
Soil characteristics (enter "x" below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter "x" below)
Bermuda
Tall fescue x
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below:
Option 1: Curb Outlet Swale: n (Y or N)
Maximum velocity
Side slopes
Swale length ft
Option 2: Conveyance Swale, Seeking Pollutant Credit: y (Y or N)
Maximum velocity for 10-yr storm 1.00 ftisec OK
Side slopes 5.00 :1 OK
Swale length 728.00 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and 11. Project Design Summary, Page 13 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal x
Parabolic
V-shaped
Width of the bottom of the swale 2.00 ft
Width of the top of the swale 10.00 ft
Additional Information
Is the swale sized for all runoff from ultimate build-out? Y (Y or N) Insufficient sizing
Is the BMP located in a proposed drainage easement with a Insufficient ROW
recorded access easement to a public Right of Way (ROW)? Y (Y or N) location.
What is the distance from the bottom of the swale to the SHWT? 36.30 ft OK
What is the ground level elevation? 717.00 fmsl
What is the elevation of the bottom of the swale? 715.50 fmsl
What is the SHWT elevation? 679.20 fmsl
What is the longitudinal slope of the swale? 0.62% OK
What is the depth of freeboard? 0.50 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 14 of 62
Permit Number:
(to be provided by DWQ)
Cf NIA-cq
ANA
Q?OM1f
MEA
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must also be filled out, printed and submitted along with all of the required
information.
I. PROJECT INFORP ATION
Project name CDIA SWMP Area West of 2nd Parallel Runway
Contact name Ron Geiger
Phone number 704-388-6825
Date September 15, 2008
Drainage area number G01aE
II. DESIGN` INFORMATION
Site Characteristics
Drainage area 33,645.17 fl?
Impervious area 16,117.20 fly
Percent impervious 0.48%
Design rainfall depth 1 inch
Peak Flow Calculations 2.70
10-yr storm runoff depth 4.81 in
10-yr storm intensity 0.02 in/hr
Post-development 10-yr storm peak flow 2.59 ft3lsec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.5 ftlsec
Soil characteristics (enter "x" below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter "x" below)
Bermuda
Tall fescue x
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below
Option 1: Curb Outlet Swale: n (Y or N)
Maximum velocity 5.50
Side slopes 5.00 :1
Swale length 728 ft
Option 2: Conveyance Swale, Seeking Pollutant Credit: Y (Y or N)
Maximum velocity for 10-yr storm 1.00 ftlsec OK
Side slopes 5.00 :1 OK
Swale length 728 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 15 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the swale
Width of the top of the swale
Additional Information
Is the swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a
recorded access easement to a public Right of Way (ROW)?
What is the distance from the bottom of the swale to the
SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the swale?
What is the SHWT elevation?
What is the longitudinal slope of the swale?
What is the depth of freeboard?
loft
Y (Y or N) Insufficient sizing
Y (Y or N) Insufficient ROW
location.
36.30 ft OK
717.00 fmsl
715.50 fmsl
679.20 fmsl
0.62% OK
0.5 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 16 of 62
•
•
•
•
•
•
•
•
•
•
•
OF WarEA
/ O
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part Ill) must also be filled out, printed and submitted along with all of the required
information.
Permit Number:
(to be provided by DWQ)
11, PROJECT INFORMATION
Project name C `,"''i 1P -,i?a,Ipst of 2nd Parallel Runway
Contact name Roni ger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number H01aW
II. DESIGN INFORMATION
Site Characteristics
Drainage area 30,803.47 fe
Impervious area 20,037.60 fe
Percent impervious 0.65%
Design rainfall depth 1 inch
Peak Flow Calculations
10-yr storm runoff depth 4.28 in
10-yr storm intensity 0.02 in/hr
Post-development 10-yr storm peak flow 3.92 ft3lsec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.5 ft/sec
Soil characteristics (enter Y below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter Y below)
Bermuda
Tall fescue x
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below:
Option 1: Curb Outlet Swale: n (Y or N)
Maximum velocity
Side slopes :1
Swale length ft
Option 2: Conveyance Swale, Seeking Pollutant Credit: y (Y or N)
Maximum velocity for 10-yr storm 1.00 fUsec OK
Side slopes 5.00 :1 OK
Swale length 1200 ft OK
Form SW401-Grassed Swale-Rev.3
Parts I and II. Project Design Summary, Page 17 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the swale
Width of the top of the Swale
Additional Information
Is the swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a
recorded access easement to a public Right of Way (ROW)?
What is the distance from the bottom of the swale to the
SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the swale?
What is the SHWT elevation?
What is the longitudinal slope of the swale?
What is the depth of freeboard?
r
2.00 ft
12 ft
Y (Y or N) Insufficient sizing
Y (Y or N) Insufficient ROW
location.
50.40 ft OK
711,00 fmsl
709.50 fmsl
659.10 fmsl
0.50% OK
0.5 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 18 of 62
Permit Number:
(to be provided by DWQ)
???.f wArF9O?
HCOM
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part 111) must also be filled out, printed and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name ?I;'?? ??? ,. eau t faPu,an-iR nwa
r
Contact name Ron Geiger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number H01 aE
II. DESIGN INFORMATION
Site Characteristics
Drainage area 136,035.23 ftz
Impervious area 20,037.60 ftz
Percent impervious 14.7%%
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth 4.28 in
10-yr storm intensity 0.02 in/hr
Post-development 10-yr storm peak flow 3.92 ft3lsec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.50 ft/sec;
Soil characteristics (enter "x" below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter "x" below)
Bermuda
Tall fescue x
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below:
Option 1: Curb Outlet Swale: n (Y or N)
Maximum velocity
Side slopes :1
Swale length ft
Option 2: Conveyance Swale, Seeking Pollutant Credit: y (Y or N)
Maximum velocity for 10-yr storm 1.00 ftlsec
Side slopes 5.00 :1
Swale length 1,200.00 ft
OK
OK
OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 19 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the swale
Width of the top of the swale
Additional Information
Is the swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a recorded
access easement to a public Right of Way (ROW)?
What is the distance from the bottom of the swale to the SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the swale?
What is the SHWT elevation?
What is the longitudinal slope of the Swale?
What is the depth of freeboard?
x
Y (Y or N) Insufficient sizing
Y (Y or N) Insufficient ROW location.
50.40 ft OK
711.00 fmsl
709.50 fmsl
659.10 fmsl
0.50% OK
0,50 It OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 20 of 62
Permit Number:
(to be provided by DWQ)
?? ?G W ATfH
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be tilled out, printed and submitted.
The Required Items Checklist (Part III) must also be filled out, printed and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name CDIP, ?L?F .ore eat of n 1 Parallel Pnn,Vay
Contact name Ron Geiger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number H01 bnW
II. DESIGN INFORMATION
Site Characteristics
Drainage area 21.595:57 ftZ
Impervious area 11002.66 ft
Percent impervious 60.2%%
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth 4.81 in
10-yr storm intensity 0.20 in/hr
Post-development 10-yr storm peak flow 2.09 ft3/sec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.50 fUsec
Soil characteristics (enter Y below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter Y below)
Bermuda
Tall fescue x
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below:
Option 1: Curb Outlet Swale: n (Y or N)
Maximum velocity
Side slopes :1
Swale length ft
Option 2: Conveyance Swale, Seeking Pollutant Credit: y (Y or N)
Maximum velocity for 10-yr storm 1.00 ft/sec OK
Side slopes 5.00 :1 OK
Swale length 700.00 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 21 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the swale
Width of the top of the swale
Additional Information
Is the swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a recorded
access easement to a public Right of Way (ROW)?
What is the distance from the bottom of the swale to the SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the swale?
What is the SHWT elevation?
What is the longitudinal slope of the swale?
What is the depth of freeboard?
2.00 ft
12.00 ft
Y (Y or N) Insufficient sizing
Y (Y or N) Insufficient ROW location.
46.90 ft OK
707.50 fmsl
706.00 fmsl
659.10 fmsl
0.50% OK
0.50 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and 11. Project Design Summary, Page 22 of 62
Permit Number:
(to be provided by DWQ)
AAA* O?UF W A TEyOG
IR
HWE
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must also be filled out, printed and submitted along with all of the required information.
1. PROJECT INFORMATION
Project name CUiA SWMP Area West of 2nd Paraiiei Runway
Contact name Ron Geiger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number H01 bnE
II. DESIGN INFORMATION
Site Characteristics
Drainage area 93,112.92 ft2
Impervious area 13,002.66 ft
Percent impervious 14.0%%
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth 4.81 in
10-yr storm intensity 0.20 in/hr
Post-development 10-yr storm peak flow 2.09 ft3/sec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.50 ft/sec
Soil characteristics (enter "x" below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter "x" below)
Bermuda
Tall fescue x
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below:
Option 1: Curb Outlet Swale: n (Y or N)
Maximum velocity 4.50
Side slopes 5.00 :1
Swale length 420.00 ft
Option 2: Conveyance Swale. Seeking Pollutant Credit: y (Y or N)
Maximum velocity for 10-yr storm 1.00 fUsec
Side slopes 5.00 :1
Swale length 700.00 ft
OK
OK
OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 23 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the swale
Width of the top of the swale
Additional Information
Is the swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a recorded
access easement to a public Right of Way (ROW)?
What is the distance from the bottom of the swale to the SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the swale?
What is the SHWT elevation?
What is the longitudinal slope of the swale?
What is the depth of freeboard?
2.00 ft
12.00 ft
Y (Y or N) Insufficient sizing
Y (Y or N) Insufficient ROW location.
46.90 ft OK
707.50 fmsl
706.00 fmsl
659.10 fmsI
0.50% OK
0.50 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 24 of 62
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Permit Number:
(to be provided by DWQ)
cramp warE,9o`
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Noe*
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must also be filled out, printed and submitted along with all of the required information.
1. PROJECT INFORMATION
Project name 6biA SiytvjP Afva ? esc of Lnd Fafallel Runwdy
Contact name Ron Geiger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number N01bON

19. DESIGN INFORMATION
Site Characteristics
Drainage area 47,748.19 ft
Impervious area 13,068.00 ft2
Percent impervious 27.4%%
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth 4.81 in
10-yr storm intensity 0.20 in/hr
Post-development 10-yr storm peak flow 1.70 ft3/sec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.50 ft/sec
Soil characteristics (enter Y below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter Y below)
Bermuda
Tall fescue x
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below:
Option 1: Curb Outlet Swale: n ` (Y or N)
Maximum velocity
Side slopes
Swale length ft
Option 2: Conveyance Swale. Seeking Pollutant Credit: y (Y or N)
Maximum velocity for 10-yr storm 1.00 ft/sec
Side slopes 5.00 :1
Swale length 750.00 ft
Form SW401-Grassed Swale-Rev.3
OK
OK
OK
Parts I and H. Project Design Summary, Page 25 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the swale
Width of the top of the swale
Additional Information
Is the swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a recorded
access easement to a public Right of Way (ROW)?
What is the distance from the bottom of the swale to the SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the Swale?
What is the SHWT elevation?
What is the longitudinal slope of the swale?
What is the depth of freeboard?
2.00 ft
12.00 ft
Y (Y or N) Insufficient sizing
Y (Y or N) Insufficient ROW location.
21.10 ft OK
707.50 fmsl
706.00 fmsl
684.90 fmsl
1.07% OK
0.50 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 26 of 62
Permit Number:
(to be provided by DWQ)
Ore?wA rpq?
AGA
NCD"
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part Ill) must also be filled out, printed and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name -'DIA S'v"v'I IP Area e6t of 2nd Parallel Runway
Contact name Ron Geiger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number H01 bsE

IL DESIGN INFORMATION
Site Characteristics
Drainage area 105.282.83 ft2
Impervious area 13,068.00 ft2
Percent impervious 12.4%%
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth 4.81 in
10-yr storm intensity 0:20 in/hr
Post-development 10-yr storm peak flow 1.70 ft3/sec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.50 ft/sec
Soil characteristics (enter "x" below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter "x" below)
Bermuda
Tall fescue x
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below:
Option 1: Curb Outlet Swale: n (Y or N)
Maximum velocity
Side slopes :1
Swale length ft
Option 2: Conveyance Swale, Seeking Pollutant Credit: Y (Y or N)
Maximum velocity for 10-yr storm 1.00 ft/sec
Side slopes 5.00 :1
Swale length 750.00 ft
OK
OK
OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 27 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the swale
Width of the top of the swale
Additional Information
Is the swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a recorded
access easement to a public Right of Way (ROW)?
What is the distance from the bottom of the swale to the SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the swale?
What is the SHWT elevation?
What is the longitudinal slope of the swale?
What is the depth of freeboard?
2.00 ft
12.00 ft
Y (Y or N) Insufficient sizing
Y (Y or N) Insufficient ROW location.
21.10 ft OK
707.50 fmsl
706.00 fmsl
684.90 fmsl
1.07% OK
0.50 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 28 of 62
Permit Number:
(to be provided by DWQ)
aF wn?eo
tea`' ?c
o? c
ASIA
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part 111) must also be filled out, printed and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name oDiA v1.'.4.1P Area ,debt of rd Para!'e' Rurr ay
Contact name Ron Geiger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number K01anW
II. DESIGN INFORMATION
Site Characteristics
Drainage area `143 15 ftz
Impervious area 18,077.40 fts
Percent impervious 20.9%%
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth 4.81 in
10-yr storm intensity 0.20 in/hr
Post-development 10-yr storm peak flow 2.91 ft3/sec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.50 ft/sec
Soil characteristics (enter Y below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter Y below)
Bermuda
Tall fescue x
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below:
Option 1: Curb Outlet Swale: n (Y or N)
Maximum velocity
Side slopes
Swale length ft
Option 2: Conveyance Swale, Seeking Pollutant Credit: y (Y or N)
Maximum velocity for 10-yr storm 1.00 ft/sec
Side slopes 5.00 :1
Swale length 1,000.00 ft
OK
OK
OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 29 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the swale
Width of the top of the Swale
Additional Information
Is the swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a recorded
access easement to a public Right of Way (ROW)?
What is the distance from the bottom of the Swale to the SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the swale?
What is the SHWT elevation?
What is the longitudinal slope of the swale?
What is the depth of freeboard?
x
2.UU tt
12.00 ft
Y (Y or N) Insufficient sizing
Y (Y or N) Insufficient ROW location.
10.10 ft OK
696,50 fmsl
695.00 fmsl
684.90 fmsl
1.10% OK
0.50 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 30 of 62
Permit Number:
(to be provided by DWQ)
OF W ATEH
AAWA
HWEHR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part Ill) must also be filled out, printed and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name CL)IA jWMF Area ??est 6i 2nd Fara!L! Rar.:ay
Contact name Ron Geiger'
Phone number 704-338-6825
Date September 15, 2008
Drainage area number K01 anE
II. DESIGN INFORMATION
Site Characteristics
Drainage area 154,115.95 ftz
Impervious area 18,077.40 ft2
Percent impervious 11.7%%
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth
10-yr storm intensity
Post-development 10-yr storm peak flow
Velocity
Maximum non-erosive velocity (peak 10-year storm)
Soil characteristics (enter "x" below)
Sand/silt (easily erodible)
Clay mix (erosion resistant)
Grass Type (enter "x" below)
Bermuda
Tall fescue
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below:
Option 1: Curb Outlet Swale:
Maximum velocity
Side slopes
Swale length
Option 2: Convevance Swale. Seekina Pollutant Credit:
Maximum velocity for 10-yr storm
Side slopes
Swale length
4.81 in
0.20 in/hr
2.91 ft3/sec

5.50 ft/sec

x

x

n (Y or N)
:1
ft
y (Y or N)
1.00 ft/sec
5.00 :1
1,000.00 ft
OK
OK
OK
Form SW401-Grassed Swale-Rev. 3 Parts I and II. Project Design Summary, Page 31 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the swale
Width of the top of the swale
Additional Information
Is the swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a recorded
access easement to a public Right of Way (ROW)?
What is the distance from the bottom of the swale to the SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the swale?
What is the SHWT elevation?
What is the longitudinal slope of the swale?
What is the depth of freeboard?
x
2.00 ft
12.00 ft
Y (Y or N) Insufficient sizing
Y (Y or N) Insufficient ROW location.
10.10 ft OK
696.50 fmsl
695.00 fmsl
684.90 fmsI
1.10% OK
0.50 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 32 of 62
Permit Number:
(to be provided by DWQ)
O? W ATFH
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must also be filled out, printed and submitted along with all of the required information.
II. PROJECT INFORMATION
Project name t>DIA 0- 41 iF Area 'Rest iii 2fid Fardiiei Runway
Contact name Ron Geiger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number KC 1,i 'N
II. DESIGN INFORMATION
Site Characteristics
Drainage area ft2
Impervious area 24,611.40 ftz
Percent impervious 36.3%u %u
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth 4.81 in
10-yr storm intensity 0.20 in/hr
Post-development 10-yr storm peak flow 3.96 ft3/sec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.50 ftlsec
Soil characteristics (enter Y below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter Y below)
Bermuda
Tall fescue x
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below:
Option 1: Curb Outlet Swale: n (Y or N)
Maximum velocity
Side slopes
Swale length ft
Option 2: Conveyance Swale, Seeking Pollutant Credit: Y (Y or N)
Maximum velocity for 10-yr storm 100 flsec OK
Side slopes 5.00 :1 OK
Swale length 1,100.00 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 33 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the swale
Width of the top of the swale
Additional Information
Is the swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a recorded
access easement to a public Right of Way (ROW)?
What is the distance from the bottom of the swale to the SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the swale?
What is the SHWT elevation?
What is the longitudinal slope of the swale?
What is the depth of freeboard?
x
4Uu tt
12.00 ft
Y (Y or N) Insufficient sizing
Y (Y or N) Insufficient ROW location.
10.10 ft OK
696,50 fmsl
695.00 fmsl
684.90 fmsl
3.36% OK
0.50 ft OK
Form SW401-Grassed Swale-Rev. 3 Parts I and It. Project Design Summary, Page 34 of 62
Permit Number:
(to be provided by DWQ)
Ok YlATEq
CF ?L
*FMA
Xua
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must also be filled out, printed and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name Dl 11p , %-J ' . est ot'nd parallel Run".va;
Contact name Ron Geiger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number K01asE
II. DESIGN INFORMATION
Site Characteristics
Drainage area 83,549.94 ft2
Impervious area 24,611.40 ft2
Percent impervious 29.5%%
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth 4.81 in
10-yr storm intensity 0.20 in/hr
Post-development 10-yr storm peak flow 3.96 ft3lsec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.50 ft/sec
Soil characteristics (enter "x" below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter"x" below)
Bermuda
Tall fescue x
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below:
Option 1: Curb Outlet Swale: n (Y or N)
Maximum velocity
Side slopes 1
Swale length ft
Option 2: Conveyance Swale, Seeking Pollutant Credit: Y (Y or N)
Maximum velocity for 10-yr storm 1.00 fUsec
Side slopes 5.00 :1
Swale length 1,100.00 ft
OK
OK
OK
Form SW401-Grassed Swale-Rev.3 Parts I and 11. Project Design Summary, Page 35 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the swale
Width of the top of the Swale
Additional Information
Is the Swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a recorded
access easement to a public Right of Way (ROW)?
What is the distance from the bottom of the swale to the SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the swale?
What is the SHWT elevation?
What is the longitudinal slope of the swale?
What is the depth of freeboard?
x
12.00 ft
Y (Y or N) Insufficient sizing
Y (Y or N) Insufficient ROW location.
10.10 ft OK
696.50 fmsl
695.00 fmsl
684.90 fmsl
3.36% OK
0.50 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and 11. Project Design Summary, Page 36 of 62
Permit Number:
(to be provided by DWQ)
?.. ?QF VlATEq
O
k?ENR o?a
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must also be filled out, printed and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name t Y MF'r rea'vvest0i 4'nd Fla, aiie1 iRuiih'vay
Contact name Ron Geiger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number L01Aw
II. DESIGN INFORMATION
Site Characteristics
Drainage area 6,371.88 ftz
Impervious area 6,098.40 ft
Percent impervious 95.7%%
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth 4.81 in
10-yr storm intensity 0.20 in/hr
Post-development 10-yr storm peak flow 0.98 ft3lsec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.50 ftisec
Soil characteristics (enter Y below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter Y below)
Bermuda
Tall fescue x
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below:
Option 1: Curb Outlet Swale: n (Y or N)
Maximum velocity
Side slopes :1
Swale length ft
Option 2: Conveyance Swale, Seeking Pollutant Credit: Y (Y or N)
Maximum velocity for 10-yr storm 1.00 ft/sec
Side slopes 5.00 :1
Swale length 320.00 ft
OK
OK
OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 37 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the swale
Width of the top of the swale
Additional Information
Is the swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a recorded
arrac.q aacamPnt to a niihlir. Rinht of Wav IRnm
What is the distance from the bottom of the Swale to the SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the swale?
What is the SHWT elevation?
What is the longitudinal slope of the swale?
What is the depth of freeboard?
x
2.00 ft
12.00 ft
Y (Y or N) Insufficient sizing
Y (Y or N) Insufficient ROW location.
47.60 ft OK
734.00 fmsl
732.50 fmsl
684.90 fmsl
0.78% OK
0.50 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 38 of 62
Permit Number:
(to be provided by DWQ)
jj? °F warEy
.5r5'i c't °o
Hcum
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part lll) must also be filled out, printed and submitted along with all of the required information.
1. PROJECT I FORMATION
Project name GDI i,lP 4r a of 2nd Farallcl Runs aj
Contact name Rcn _io r
Phone number 704-338-6825
Date September 15, 2008
Drainage area number L01 Ae
II. DESIGN INFORMATION
Site Characteristics
Drainage area 10,821.20 ft
Impervious area 6,098.40 ft2
Percent impervious 56.4%%
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth 4.81 in
10-yr storm intensity 0.20 in/hr
Post-development 10-yr storm peak flow 0.98 ft3lsec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.50 ft/sec
Soil characteristics (enter "x" below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter "x" below)
Bermuda
Tall fescue x
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below:
Option 1: Curb Outlet Swale: n (Y or N)
Maximum velocity
Side slopes 1
Swale length ft
Option 2: Conveyance Swale, Seeking Pollutant Credit: Y (Y or N)
Maximum velocity for 10-yr storm 1.00 ft/sec
Side slopes 5.00 :1
Swale length 320.00 ft
OK
OK
OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 39 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the swale
Width of the top of the swale
Additional Information
Is the swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a recorded
access easement to a public Right of Way (ROW)?
What is the distance from the bottom of the swale to the SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the swale?
What is the SHWT elevation?
What is the longitudinal slope of the swale?
What is the depth of freeboard?
x
41) nn...... R
Y (Y or N) Insufficient sizing
Y (Y or N) Insufficient ROW location.
47.60 ft OK
734.00 fmsl
732.50 fmsl
684.90 fmsl
0.78% OK
0.50 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and 11. Project Design Summary, Page 40 of 62
Permit Number:
(to be provided by DWQ)
aF wnrgy
a ?c
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must also be filled out, printed and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name Dl Vl,IMP A ea 'vvc5i of 2nd Paraliei Runway
Contact name Ren Geiger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number M01 aW
II. DESIGN INFORMATION
Site Characteristics
Drainage area 63,722.22 ftz
Impervious area 22,433.40 ftz
Percent impervious 35.2%%
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth 4.81 in
10-yr storm intensity 0.20 in/hr
Post-development 10-yr storm peak flow 3.61 ft3lsec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.50 fUsec
Soil characteristics (enter "x" below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter "x" below)
Bermuda
Tall fescue x
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below:
Option 1: Curb Outlet Swale: n (Y or N)
Maximum velocity
Side slopes
Swale length ft
Option 2: Conveyance Swale. Seeking Pollutant Credit: Y (Y or N)
Maximum velocity for 10-yr storm 1.00 ftlsec
Side slopes 5.00 :1
Swale length 1,285.00 ft
OK
OK
OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 41 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the swale
Width of the top of the swale
Additional Information
Is the swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a recorded
access easement to a public Right of Way (ROW)?
What is the distance from the bottom of the swale to the SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the swale?
What is the SHWT elevation?
What is the longitudinal slope of the swale?
What is the depth of freeboard?
2.00 ft
12.00 ft
Y (Y or N) Insufficient sizing
Y (Y or N) Insufficient ROW location.
29.60 ft OK
711.50 fmsl
710.00 fmsl
680.40 fmsl
1.95% OK
0.50 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 42 of 62
Permit Number:
(to be provided by DWQ)
o?e¢ WAT?gO
11R o
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must also be filled out, printed and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name CIA ov?lmp I .. - r st o{ ri ParaRunway
Contact name Ron Geiger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number M01 aE
II. DESIGN INFORMATION
Site Characteristics
Drainage area 62,054.46 ftz
Impervious area 22,433.40 ft
Percent impervious 36.2%%
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth 4.81 in
10-yr storm intensity 0.20 in/hr
Post-development 10-yr storm peak flow 3.61 ft3lsec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.50 ftlsec
Soil characteristics (enter Y below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter Y below)
Bermuda
Tall fescue x
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below
Option 1: Curb Outlet Swale: n (Y or N)
Maximum velocity
Side slopes :1
Swale length ft
Option 2: Conveyance Swale, Seeking Pollutant Credit: y (Y or N)
Maximum velocity for 10-yr storm 1.00 ftlsec
Side slopes 5.00 :1
Swale length 1,285.00 ft
OK
OK
OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 43 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the swale
Width of the top of the swale
Additional Information
Is the swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a recorded
access easement to a public Right of Way (ROW)?
What is the distance from the bottom of the swale to the SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the swale?
What is the SHWT elevation?
What is the longitudinal slope of the swale?
What is the depth of freeboard?
Z.Uu tt
12.00 ft
Y (Y or N) Insufficient sizing
Y (Y or N) Insufficient ROW location.
29.60 ft OK
711.50 fmsl
710.00 fmsl
680.40 fmsl
1.95% OK
0.50 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 44 of 62
Permit Number:
(to be provided by DWQ)
??ot WATego`
MCD"
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must also be filled out, printed and submitted along with all of the required information.
I. PROJECT INFDRMATION
Project name C i;?, ??P ,?,re "_Qt' of nj F- '11-1
Contact name Ron Geiger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number V1A
II. DESIGN INFORMATION
Site Characteristics
Drainage area 1 V 369.85 ft2
Impervious area 108,232.12 ft2
Percent impervious 80.0%%
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth 4.81 in
10-yr storm intensity 0.20 in/hr
Post-development 10-yr storm peak flow 18.13 ft3/sec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.50 ft/sec
Soil characteristics (enter Y below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter "x" below)
Bermuda
Tall fescue x
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below:
Option 1: Curb Outlet Swale: n (Y or N)
Maximum velocity
Side slopes
Swale length ft
Option 2: Conveyance Swale, Seeking Pollutant Credit: y (Y or N)
Maximum velocity for 10-yr storm 1.00 ft/sec
Side slopes 5.00 :1
Swale length 1,000.00 ft
OK
OK
OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 45 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal x
Parabolic
V-shaped
Width of the bottom of the swale 3.00 ft
Width of the top of the swale 13.00 ft
Additional Information
Is the swale sized for all runoff from ultimate build-out? Y (Y or N) Insufficient sizing
Is the BMP located in a proposed drainage easement with a recorded

access easement to a public Right of Way (ROW)? Y (Y or N) Insufficient ROW location.
What is the distance from the bottom of the swale to the SHWT? 17.00 ft OK
What is the ground level elevation? 711.50 fmsl
What is the elevation of the bottom of the swale? 710.00 fmsl
What is the SHWT elevation? 693.00 fmsl
What is the longitudinal slope of the swale? 2.20% OK
What is the depth of freeboard? 0.50 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and 11. Project Design Summary, Page 46 of 62
Permit Number:
(to be provided by DWQ)
O? W F TEH
3 ?
OG
AAWAA
HCD"
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must also be filled out, printed and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name Gl;. ?v^1P .rea vestof 11i Parallel Runway
Contact name Ron Geiger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number V1 B
II. DESIGN INFORMATION
Site Characteristics
Drainage area 132422.4 ft2
Impervious area 77543.42 ft2
Percent impervious 58.6%%
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth 4.81 in
10-yr storm intensity 0.20 in/hr
Post-development 10-yr storm peak flow 12.46 ft3/sec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.50 ft/sec
Soil characteristics (enter Y below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter Y below)
Bermuda
Tall fescue x
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below:
Option 1: Curb Outlet Swale: n (Y or N)
Maximum velocity
Side slopes
Swale length ft
Option 2: Conveyance Swale, Seeking Pollutant Credit: Y (Y or N)
Maximum velocity for 10-yr storm 1.00 ft/sec
Side slopes 5.00 :1
Swale length 875.00 ft
OK
OK
OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 47 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the swale
Width of the top of the swale
Additional Information
Is the swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a recorded
access easement to a public Right of Way (ROW)?
What is the distance from the bottom of the swale to the SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the swale?
What is the SHWT elevation?
What is the longitudinal slope of the swale?
What is the depth of freeboard?
x
o.vu n
13.00 ft
Y (Y or N) Insufficient sizing
Y (Y or N) Insufficient ROW location.
14.00 ft OK
708.50 fmsl
707.00 fmsl
693.00 fmsl
0.46% OK
0.50 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and 11. Project Design Summary, Page 48 of 62
Permit Number:
(to be provided by DWQ)
Op W!TpH
l?fCliit cs? ?w^ s
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must also be filled out, printed and submitted along with all of the required information.
1. PROJECT INFORMATION
Project name Dili SWivIP Arta Uve?i Of ?[I,] Faraiiei Runway
Contact name Ron Geiger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number Vic
IL DESIGN INFORMATION
Site Characteristics
Drainage area 108464.4 ft2
Impervious area 61937.98 ftz
Percent impervious 57.1% %
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth 4.81 in
10-yr storm intensity 0.20 in/hr
Post-development 10-yr storm peak flow 9.95 ft3lsec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.50 ftlsec
Soil characteristics (enter "x" below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter "x" below)
Bermuda
Tall fescue x
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below:
Option 1: Curb Outlet Swale: n (Y or N)
Maximum velocity
Side slopes :1
Swale length ft
Option 2: Conveyance Swale, Seeking Pollutant Credit: Y (Y or N)
Maximum velocity for 10-yr storm 100 ft/sec
Side slopes 5.00 :1
Swale length 740.00 ft
OK
OK
OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 49 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the swale
Width of the top of the swale
Additional Information
Is the Swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a recorded
access easement to a public Right of Way (ROW)?
What is the distance from the bottom of the swale to the SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the swale?
What is the SHWT elevation?
What is the longitudinal slope of the swale?
What is the depth of freeboard?
x
3.00 ft
13.00 ft
Y (Y or N) Insufficient sizing
Y (Y or N) Insufficient ROW location.
9.00 ft OK
703.50 fmsl
702.00 fmsl
693.00 fmsl
1.08% OK
0.50 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and 11. Project Design Summary, Page 50 of 62
Permit Number:
(to be provided by DWQ)
0Y IN-N,
? G
It??
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must also be filled out, printed and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name vii- ' VV MF ea wveSi of 4'iiu Paraiiei iRui"Waj
Contact name Ron Geiger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number V1 Dn
II. DESIGN INFORMATION
Site Characteristics
Drainage area 68389.2 ft
Impervious area 40587.60 ft2
Percent impervious 59.3%%
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth 4.81 in
10-yr storm intensity 0.20 in/hr
Post-development 10-yr storm peak flow 14.49 ft3lsec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.50 fUsec
Soil characteristics (enter Y below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter Y below)
Bermuda
Tall fescue x
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below:
Option 1: Curb Outlet Swale: n (Y or N)
Maximum velocity
Side slopes 1
Swale length ft
Option 2: Conveyance Swale, Seeking Pollutant Credit: y (Y or N)
Maximum velocity for 10-yr storm 1.00 ft/sec
Side slopes 5.00 :1
Swale length 700.00 ft
OK
OK
OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 51 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the Swale
Width of the top of the swale
Additional Information
Is the swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a recorded
access easement to a public Right of Way (ROW)?
What is the distance from the bottom of the swale to the SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the swale?
What is the SHWT elevation?
What is the longitudinal slope of the swale?
What is the depth of freeboard?
x
3.uu tt
13.00 ft
Y (Y or N) Insufficient sizing
Y (Y or N) Insufficient ROW location.
7.00 ft OK
701.50 fmsl
700.00 fmsl
693.00 fmsl
0.86% OK
0.50 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 52 of 62
•
•
•
•
•
•
Permit Number:
(to be provided by DWQ)
oof W A?, H
?G
AMA
?? g
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must also be filled out, printed and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name CDIA. SWMP Area West of 2nd Parallel Runway
Contact name Run Geiger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number V1 Ds
L DESIGN INFORMATION
Site Characteristics
Drainage area 142,876.80 ft2
Impervious area 84,51310 ft2
Percent impervious 59.2%%
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth 4.81 in
10-yr storm intensity 0.20 in/hr
Post-development 10-yr storm peak flow 14.49 ft3/sec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.50 ft/sec
Soil characteristics (enter Y below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter Y below)
Bermuda
Tall fescue x
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below:
Option 1: Curb Outlet Swale: n (Y or N)
Maximum velocity
Side slopes :1
Swale length ft
Option 2: Conveyance Swale, Seeking Pollutant Credit: y (Y or N)
Maximum velocity for 10-yr storm 1.00 ft/sec
Side slopes 5.00 :1
Swale length 700.00 ft
Form SW401-Grassed Swale-Rev.3
OK
OK
OK
Parts I and II. Project Design Summary, Page 53 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the swale
Width of the top of the swale
Additional Information
Is the swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a recorded
access easement to a public Right of Way (ROW)?
What is the distance from the bottom of the swale to the SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the swale?
What is the SHWT elevation?
What is the longitudinal slope of the swale?
What is the depth of freeboard?
x
3.00 ft
13.00 ft
Y (Y or N) Insufficient sizing
Y (Y or N) Insufficient ROW location.
7.00 ft OK
701.50 fmsl
700.00 fmsl
693.00 fmsl
2.14% OK
0.50 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and 11. Project Design Summary, Page 54 of 62
Permit Number:
(to be provided by DWQ)
AARA
HCDEW
?O?Op WATE9O
?
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part Ill) must also be filled out, printed and submitted along with all of the required information.
1. PROJECT INFORMATION
Project name CDiA S'yVIV1P Afea 'y'vestof 2nd 'Parallel Runway
Contact name Ron Geiger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number V07W
II. DESIGN INFORMATION
Site Characteristics
Drainage area 112,384.80 ftz
Impervious area 61,595.90 ftz
Percent impervious 54.8%%
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth
10-yr storm intensity
Post-development 10-yr storm peak flow
Velocity
Maximum non-erosive velocity (peak 10-year storm)
Soil characteristics (enter Y below)
Sand/silt (easily erodible)
Clay mix (erosion resistant)
Grass Type (enter Y below)
Bermuda
Tall fescue
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below:
Option 1: Curb Outlet Swale:
Maximum velocity
Side slopes
Swale length
Option 2: Convevance Swale, Seeking Pollutant Credit:
Maximum velocity for 10-yr storm
Side slopes
Swale length
4.81 in
0.20 in/hr
9.90 ft3/sec

5.50 ft/sec

x

X

n (Y or N)
:1
ft
y (Y or N)
1.00 ftlsec
5.00 :1
832,00 ft
OK
OK
OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 55 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the swale
Width of the top of the swale
Additional Information
Is the swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a recorded
access easement to a public Right of Way (ROW)?
What is the distance from the bottom of the swale to the SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the swale?
What is the SHWT elevation?
What is the longitudinal slope of the swale?
What is the depth of freeboard?
3.00 ft
13.00 ft
Y (Y or N) Insufficient sizing
Y (Y or N) Insufficient ROW location.
8.00 ft OK
702.50 fmsl
701.00 fmsl
693.00 fmsl
1.68% OK
0.50 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 56 of 62
Permit Number:
(to be provided by DWQ)
OFWaT?9
`? OY
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must also be filled out, printed and submitted along with all of the required information.
1. PROJECT INFORMATION
Project name plA "M 4t- est of nd Paraliei Ran ,ay
Contact name Ron Geiger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number V7e
II. DESIGN INFORMATION
Site Characteristics
Drainage area 40,946.40 ftz
Impervious area 26,474:67 ft2
Percent impervious 64.7%a %
Design rainfall depth 1:00 inch
Peak Flow Calculations
10-yr storm runoff depth 4.81 in
10-yr storm intensity 0.20 in/hr
Post-development 10-yr storm peak flow 4.25 ft3lsec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.50 fUsec
Soil characteristics (enter "x" below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter "x" below)
Bermuda
Tall fescue x
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below
Option 1: Curb Outlet Swale: n (Y or N)
Maximum velocity
Side slopes
Swale length ft
Option 2: Conveyance Swale, Seeking Pollutant Credit: Y (Y or N)
Maximum velocity for 10-yr storm 1.00 ft/sec
Side slopes 5.00 :1
Swale length 287.00 ft
OK
OK
OK
Form SW401-Grassed Swale-Rev.3 Parts I and 11. Project Design Summary, Page 57 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the swale
Width of the top of the swale
Additional Information
Is the swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a recorded
access easement to a public Right of Way (ROW)?
What is the distance from the bottom of the swale to the SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the swale?
What is the SHWT elevation?
What is the longitudinal slope of the swale?
What is the depth of freeboard?
x
s.uu tt
13.00 ft
Y (Y or N) Insufficient sizing
Y (Y or N) Insufficient ROW location.
11.00 ft OK
705.50 fmsl
704.00 fmsl
693.00 fmsl
1.05% OK
0.50 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 58 of 62
Permit Number:
(to be provided by DWQ)
MA 31 ?OC WnTFgOy
MCIN-M
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must also be filled out, printed and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name DIA wvMPnreaw'v'eSiofgildParallel lunwdy
Contact name Ron Geiger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number VRW
II. DESIGN INFORMATION
Site Characteristics
Drainage area 98445.6 ftZ
Impervious area 48153.32 ftz
Percent impervious 48.9%%
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth 4.81 in
10-yr storm intensity 0.20 in/hr
Post-development 10-yr storm peak flow 8.75 ft3/sec
Velocity
Maximum non-erosive velocity (peak 10-year storm) 5.50 fUsec
Soil characteristics (enter Y below)
Sand/silt (easily erodible)
Clay mix (erosion resistant) x
Grass Type (enter Y below)
Bermuda
Tall fescue x
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below:
Option 1: Curb Outlet Swale: n (Y or N)
Maximum velocity
Side slopes :1
Swale length ft
Option 2: Conveyance Swale, Seeking Pollutant Credit: y (Y or N)
Maximum velocity for 10-yr storm 1.00 fUsec
Side slopes 5.00 :1
Swale length 770.00 ft
OK
OK
OK
Form SW401-Grassed Swale-Rev.3 Parts I and It. Project Design Summary, Page 59 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the swale
Width of the top of the swale
Additional Information
Is the swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a recorded
access easement to a public Right of Way (ROW)?
What is the distance from the bottom of the swale to the SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the swale?
What is the SHWT elevation?
What is the longitudinal slope of the swale?
What is the depth of freeboard?
x
3.00 ft
13.00 ft
Y (Y or N) Insufficient sizing
Y (Y or N) Insufficient ROW location.
28.00 ft OK
722.50 fmsl
721.00 fmsl
693.00 fmsl
1.43% OK
0.50 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 60 of 62
Permit Number:
(to be provided by DWQ)
o" waTE9
r??y. emu` Oc
NNR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
GRASSED SWALE SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part Ill) must also be filled out, printed and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name DIAS t'; cuestof 'nd °aralel Rw?J.ay
Contact name Ron Geiger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number V8e
111. DESIGN INFORMATION
Site Characteristics
Drainage area 47913 ft
Impervious area 30540.72 ft2
Percent impervious 63.7%%
Design rainfall depth 1.00 inch
Peak Flow Calculations
10-yr storm runoff depth
10-yr storm intensity
Post-development 10-yr storm peak flow
Velocity
Maximum non-erosive velocity (peak 10-year storm)
Soil characteristics (enter "x" below)
Sand/silt (easily erodible)
Clay mix (erosion resistant)
Grass Type (enter "x" below)
Bermuda
Tall fescue
Bahiagrass
Kentucky bluegrass
Grass-legume mixture
Swale type: Fill out one of the options below:
Option 1: Curb Outlet Swale:
Maximum velocity
Side slopes
Swale length
Option 2: Conveyance Swale, Seekina Pollutant Credit:
Maximum velocity for 10-yr storm
Side slopes
Swale length
4.81 in
0.20 in/hr
4.91 ft3lsec

5.50 ft/sec

x

x

n (Y or N)
:1
ft
y (Y or N)
1.00 ft/sec
5.00 :1
335.00 ft
OK
OK
OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 61 of 62
Permit Number:
(to be provided by DWQ)
Swale Characteristics
Swale Shape: Enter an Y in the appropriate cell below:
Trapezoidal
Parabolic
V-shaped
Width of the bottom of the swale
Width of the top of the swale
Additional Information
Is the swale sized for all runoff from ultimate build-out?
Is the BMP located in a proposed drainage easement with a recorded
access easement to a public Right of Way (ROW)?
What is the distance from the bottom of the swale to the SHWT?
What is the ground level elevation?
What is the elevation of the bottom of the swale?
What is the SHWT elevation?
What is the longitudinal slope of the swale?
What is the depth of freeboard?
3.00 ft
13 00 ft
Y (Y or N) Insufficient sizing
Y (Y or N) Insufficient ROW location.
28.00 ft OK
722.50 fmsl
721.00 fmsl
693.00 fmsl
1.79% OK
0.50 ft OK
Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 62 of 62
Permit No:
(to be assigned by DWQ)
III. REQUIRED ITEMS CHECKLIST
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
imr 1. Plans (1" - 50' or larger) of the entire site showing:
Design at ultimate build-out,
Off-site drainage (if applicable),
Delineated drainage basins (include Rational C coefficient per basin),
Cell dimensions,
Pretreatment system,
High flow bypass system,
Maintenance access,
Proposed drainage easement and public right of way (ROW),
Clean out pipe locations,
Overflow device, and
Boundaries of drainage easement.
2. Plan details (1" = 30' or larger) for the bioretention cell showing:
Cell dimensions
Pretreatment system,
High flow bypass system,
Maintenance access,
Recorded drainage easement and public right of way (ROW),
Design at ultimate build-out,
Off-site drainage (if applicable),
Clean out pipe locations,
Overflow device, and
Boundaries of drainage easement.
3. Section view of the bioretention cell (1" = 20' or larger) showing:
??77 Side slopes, 3:1 or lower
Underdrain system (if applicable), and
Bioretention cell layers [ground level and slope, pre-treatment, ponding depth, mulch depth, fill media
depth, washed sand, filter fabric (or choking stone if applicable), #57 stone, underdrains (if applicable),
SHWT level(s), and overflow structure]
1(j 4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
CCJJ results of the soils report must be verified in the field by DWQ, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include:
Soil permeability,
Soil composition (% sand, % fines, % organic), and
- index.
5. A detailed planting plan (1" = 20' or larger) prepared by a qualified individual showing:
A variety of suitable species,
Sizes, spacing and locations of plantings,
Total quantity of each type of plant specified,
A planting detail,
The source nursery for the plants, and
Fertilizer and watering requirements to establish vegetation.
6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized. IN Pro u { 0 55
7. The supporting calculations (including underdrain calculations, if applicable).
(
ll 8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
(
6_(_ 9. A copy of the deed restrictions (if required).
Form SW401-Bioretention-Rev.3 Part III, Page 1 of 1
Permit No:
?W?.? (to be assigned by DWQ)
O V A Fq
OG
HMNR
HM NR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
BIORETENTION CELL SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name ?"DIA SVAlP Nrea'dVest of -2nd Pa(aiiei Runway
Contact name Ron Geiger
Phone number 704-338-6825
Date September 15, 2008
Drainage area number Old Dowd Road A2
II. DESIGN INFORMATION
Site Characteristics
Drainage area 265,620.31 ft2
Impervious area 64,193.00 ft2
Percent impervious 24.2% %
Design rainfall depth 1.00 inch
Peak Flow Calculations
1-yr, 24-hr runoff depth 2.77 in
1-yr, 24-hr intensity 0.12 in/hr
Pre-development 1-yr, 24-hr peak flow 8.90 ft3/sec
Post-development 1-yr, 24-hr peak flow 17.70 ft3/sec
Pre/Post 1-yr, 24-hr peak control 8.80 ft3/sec
Storage Volume: Non-SR Waters
Design volume 7,083.77 ft3
Storage Volume: SR Waters
Pre-development 1-yr, 24-hr runoff ft3
Post-development 1-yr, 24-hr runoff ft3
Minimum volume required ft3
Volume provided ft3
Cell Dimensions
Ponding depth of water 12.00 inches OK
Ponding depth of water 1.00 ft
Surface area of the top of the bioretention cell 7109.50 ft2 OK
Length: 120.00 ft OK
Width: 59.50 ft OK
-or- Radius ft
Soils Report Summary
Drawdown time, ponded volume 12.00 hr OK
Drawdown time, to 24 inches below surface 12.00 hr OK
Drawdown time, total: 24.00 hr
In-situ soil:
Soil permeability 0.60 in/hr OK
Planting media soil:
Soil permeability 1.50 in/hr OK
Soil composition
% Sand (by weight) 85% OK
% Fines (by weight) 10% OK
% Organic (by weight) 5% OK
Total: 100%
Phosphorus Index (P-Index) (unitless)
Form SW401-Bioretention-Rev.3 Part III, Page 1 of 3
Permit No:
(to be assigned by DWQ)
Basin Elevations
Temporary pool elevation 725.17 fmsl
Planting elevation (top of the mulch) 724.17 fmsl OK
Bottom of the cell 721.00 fmsl
Planting depth 3.17 ft
Depth of mulch 2.00 inches OK
SHWT elevation 666.00 fmsl OK

Are underdrains being installed? Y (Y or N)
How many clean out pipes are being installed? 8 OK
What factor of safety is used for sizing the underdrains? (See 2.00 OK
BMP Manual Section 12.3.6)
Additional distance between the bottom of the planting media and 1.00 ft
the bottom of the cell to account for underdrains
Bottom of the cell required 720.00 fmsl
Distance from bottom to SHWT 54.00 ft OK
Type of bioretention cell (answer "Y" to only one of the two following
questions):
Is this a grassed cell? Y (Y or N) OK
Is this a cell with trees/shrubs? N (Y or N)
Planting Plan
Number of tree species 0 More species are recommended.
Number of shrub species 0 More species are recommended.
Number of herbaceous groundcover species 1 More species are recommended.
Additional Information
Does volume in excess of the design volume bypass the Y (Y or N) OK
bioretention cell?
Does volume in excess of the design volume flow evenly distributed Y (Y or N) OK
through a vegetated filter?
What is the length of the vegetated filter? 30 ft
Does the design use a level spreader to evenly distribute flow? Y (Y or N) Submit a level spreader supplement.
Is the BMP located at least 30 feet from surface waters (50 feet if Y (Y or N) OK
SA waters)?
Is the BMP located at least 100 feet from water supply wells? Y (Y or N) OK
Are the vegetated side slopes equal to or less than 3:1? Y (Y or N) OK
Is the BMP located in a recorded drainage easement with a Y (Y or N) OK
recorded access easement to a public Right of Way (ROW)?
Inlet velocity (from treatment system) ft/sec
Is the area surrounding the cell likely to undergo development in the N (Y or N) OK
future?
Are the slopes draining to the bioretention cell greater than 20%? N (Y or N) OK
Is the drainage area permanently stabilized? Y (Y or N) OK
Pretreatment Used
(Indicate Type Used with an "X" in the shaded cell)
Gravel and grass X
(8inches gravel followed by 3-5 ft of grass) OK
Grassed swale N
Forebay N
Form SW401-Bioretention-Rev.3 Part III, Page 2 of 3
Charlotte Airport,
Precipitation Data Chart From: http://hdsc.nws.noaa.gov/hdsc/pfds/
Preci pitat ion Frequent Est ima tes ( inches)
AR1'
(years) 6
min 10
min 15
min 30
min 60
min 120
min 3
hr 6
hr 12
hr 24
hr 48
hr 4
day 7
day 10
day 20
day 30
day 45
day 60
day
1 0.4 0.63 0.79 1.09 1.35 1.57 1.68 2.03 2.41 2.77 3.24 3.63 4.17 4.78 6.41 7.92 9.96 11.8
2 0.47 0.75 0.94 1.3 1.64 1.9 2.02 2.45 2.91 3.34 3.9 4.36 4.97 5.69 7.57 9.31 11.7 13.8
6 0.55 0.88 1.11 1.57 2.02 2.36 2.52 3.06 3.64 4.19 4.86 5.37 6.04 6.83 8.93 10.8 13.3 15.6
10 0.6 0.96 1.22 1.77 2.3 2.71 2.91 3.54 4.23 4.86 5.62 6.18 6.9 7.73 10 12 14.6 17
25 0.67 1.06 1.35 1.99 2.65 3.16 3.44 4.19 5.04 5.76 6.64 7.28 8.08 8.94 11.5 13.5 16.2 18.8
50 0.71 1.13 1.43 2.16 2.93 3.51 3.85 4.7 5.69 6.48 7.45 8.15 9.01 9.89 1 .1
100 0.75 1.19 1.51 2.31 3.19 3.85 4.27 5.23 6.36 7.22 8.27 9.04 9.97 10.9 1 1.4
200 0.79 1.25 1.57 2.45 3.44 4.19 7.06 7.97 9.11 9.95 11 11.8 1 M .7
500 0.83 1.31 1.65 2.62 3.76 4.64 5.29 6.52
T 8.04 9 10.3 11.2 12.3 13.1 1 18.6 21.4 1
.3
1000 0.86 1.35 1.69 2.74 4 4.97 8.82 9.8 11.2 12.2 13.3 14.1 1 .5
Finding The 10-yr, 24-hr Storm:
Read Chart:
Time of Conc.: T,=
=(L3/H).385/128
Hydraulic Length, L
Change in Elev., H
Intensity, Peak 10-yr
d(in)/t jmin)*60(min/hr)
Depth at Tc & 10-yr: d=
Intensity, Peak 1-yr
d(in)/t jmin)*60(min/hr)
Depth at Tc &I -Yr: d=
4.86 inches
9.25 min (Calculate this value from the hydraulic length and the change in elevation
along the hydraulic length)
1200 ft Furthest distance water flows to BMP
18 ft Over hydraulic length
6.23 in/hr
0.96 in
0.31 in/hr
0.63 in

POINT PRECIPITATION M
W)
FREQUENCY ESTIMATES `)
• i FROM NOAA ATLAS 14
CHARL OTTE WS 0 A"T, NORTH CAROLINA (31-1690) 352225 N 809542 W728 fret
. f Nk-pide -Fkequmcy Atlm des ITh"d St 0140AA Atlu 14, Vokm 2, V- 3
G.M. Bore-, D. MaLk, B. Lm, T. parybok, M.Y&U, and D. Riley
• NOAA, Neimul WeaUa Service, Silas Sprit, Maylmd, 2004
FSmacted: Mom Jul 21 2008
Confidence Limits Seasonality Location Maps Other info, 11 313 dais Maps Help Docs U S. Map
•
•
Precipitation Intensity Estimates (in/hr)
ARI* 10 15 30 60 120 10 20 30 43 60
- - --------- - -----
5 min I - - - 3 hr 6 hr 12 hr 24 hr 4$ hr d day 7 daY
(years) < min min min min min d?X d?Y
1 4 76 3.80 317 2 ,17 X1.35 0.79 10.56 034 (0.20 0 12 0 07 0 04 O.D2 0.02 0 01 0 Dl 0.01 0 Ol
.................. .:.. ..
2 5.64 4.51 13.78 2,61 1164 0 95 0.67 0,41 10.24 0.14 D 08 0.05 D.03 0 02 D D2 ,0.01 0.01 0 01
. 5 (6.55 5.25 4.43 314 12.02 1.18 0.84 :0.51 0.30 0.17 0 10 :0.06 10.04 0.03 10 02 0.02 0.01 0.01
• 10 7 22 5.78 4.87 3.53 2 30 1.35 0 97 0.59 0 35 0.20
0.06 0.04 0.03 0 02 0 02 0.01 0.01
0. 12
25 I' 99 6.37 5.38 3.99 2 65 1.58 11.14 0.70 0.42 .0.24 E0.14 '., 0.08 0.05 D.04 D 02 0.02 0.02 0.01
• 50 8.53 6.80 5.74 4.32 2.93 1.75 1.28 0 79 0.47 0.27 D 16 0.08 10 0 0 ,04 D 03 0.02 0.02 D 01
1D0 ?9 02 X7.16
• 6.04 4.62 3.19 1.93 1.42 0 87 10.53 0.30 1017 0.09 10.06 0.05D 03 0.02 '0.02 0 01

200 944 E7 49
• -. _..
6 30 4.90
3.44 2 10

" _ -
1.57 0 96 0 39 D 33
__ _
0 19 0 10 [6-67 0 OS 0 03 0 02
_ ..
6'
10 02 D 02
I-----.
500 9.94 17.86 6.59 5.25 ?3 76
l32 ' 1.7b .1.D9 0.67 D.38 .12 0 .07
[
.21
0 0.050 03 D.03
y0.02 0.02
• 1000 10.27 8.09 6.77 5.48 4.00 2.49 1.91 1.19 0.73 0.41 0 23 0.13 0.08 0.06 0 04 0.03 i0.0 0.02
• 'These precipitation frequency estimates are based on a partial duration series. ARI is the Auerage Recurrence In6erual.
Please refer toihe documentation for more information. NOTE: Fonnaltingforces estimates near zero to appear as zero.
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CDIA SWMP September 15, 2008
• Area West of 2nd Parallel Runway HDR Engineering, Inc
• of the Carolinas
•
•
• Bioretention Calculations for Drainage Area A2 only
•
• _ Impervious portion of Drainage Area __ 1.47
IA
0.24
Total Drainage Area 6.098

• R„ = 0.05 + 0.91A = 0.27
Total Drainage Area = 7.31 ac
•
Volume = 3630*Rp*R„*A = 7083.77 cft
•
Dimentions of Bioretention Cell = 59.5 x 120 sqft
Ponding Depth = 1 ft
• Volume = 7109.5 cft
•
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ultra-urban tiMy - rn W A Yage 1 of 4
Environment FHWA> HEP> Envronment> Natural> Water> Publications
Previous Table of Contents Next
Stormwater Best Management Practices in an Ultra-Urban Setting:
Selection and Monitoring
Fact Sheet - Street Sweepers
Streetsweeping is an effective ultra-urban best management practice for reducing total suspended solids and
associated pollutant washoff from urban streets. Recent studies have found that streetsweeping programs using
equipment based on new technologies can significantly reduce pollutant washoff from urban streets, with potential
reductions of up to 80 percent in annual total suspended solids and associated pollutants (Sutherland and Jelen,
1996).
Applicability
Streetsweeping is well suited to ultra-urban environments where little land is available for installation of structural
controls. It should be considered in commercial business districts, industrial sites, and intensely developed areas in
close proximity to receiving waters. For highway applications, streetsweeping may be considered for road
shoulders, where safety permits, rest stop parking areas, or maintenance yards. The benefits of streetsweeping will
be best realized by using the most sophisticated sweepers at a weekly to bimonthly frequency depending on local
conditions, with a careful assessment of whether certain rules such as restricted street parking prior to and during
sweeping can be enforced. Streetsweeping is not effective in removing oil and grease, and older conventional
mechanical sweepers are limited in their ability to remove fine sediment.
Types of Street Sweepers
Mechanical sweepers employ a rotating gutter broom to remove particles from the street gutter area, with a water
spray used to control dust. The particles removed are placed in the path of a cylindrical broom that rotates to carry
the material onto a conveyor belt and into a storage hopper. This is the most widely used equipment for street
cleaning in the United States.
• Vacuum-assisted sweepers also use gutter brooms to remove particles from the street. However, the refuse is
• then placed in the path of a vacuum intake that transports the dirt to the hopper. The transported dirt is usually
saturated with water. The overall efficiency of vacuum-assisted cleaners is generally higher than that of mechanical
• cleaners, especially for particles larger than the dust and dirt range (larger than about 3 mm).
Tandem sweeping operations involve two successive cleaning passes, first by a mechanical (broom and conveyor
belt) sweeper, followed immediately by a vacuum-assisted sweeper.
Regenerative air sweepers blow air onto the pavement and immediately vacuum it back to entrain and capture
accumulated sediments. Air is regenerated for blowing through a dust separation system. If the accumulated
loading is not too great, regenerative air sweepers are generally considered effective for removing fine sediment
(Sutherland and Jelen, 1996).
Vacuum-assisted dry sweepers combine the important elements of tandem sweeping into a single unit. These
sweepers apply technology originally developed to remove spilled coal and coal dust from railroad tracks. The
technology has also been applied to industrial sites where complete removal without leakage of particulate matter is
important. The mechanical sweeping component in these sweepers is completely dry. A specialized rotating brush
is used to scratch and loosen dirt and dust from impervious surfaces, allowing the vacuum system to recover
practically all particulate matter. A continuous filtration system prevents very fine particulate matter from leaving the
hopper, which prevents the formation of the dust trails typically seen with conventional mechanical sweepers.
Effectiveness
http://www. fhwa. dot. gov/environrnent/ultraurb/3 fs 16. htm ?Ri? nm
Ultra-Urban tSMY - P H W A Yage 2 of 4
The effectiveness of streetsweeping programs depends on several factors, including:
Type and operation of equipment used: Vacuum-assisted and regenerative air sweepers are generally more
efficient than mechanical sweepers at removing finer sediments, which often bind a higher proportion of heavy
metals (Table 18). The performance of sweepers can be enhanced by operating them at optimal speeds (6 to 8
mi/h), ensuring that brushes are properly adjusted, and ensuring that appropriate rotation rates and sweeping
patterns are used. Tests conducted on the newer vacuum-assisted dry sweepers have shown they have
significantly enhanced capabilities to remove sediment compared to conventional sweepers, with projected
reductions of up to 79 percent in total suspended solids loadings from urban streets. In addition, these sweepers are
extremely effective at removing respirable (PM-10) particulate matter (particles with an aerodynamic diameter less
than or equal to 10 microns) compared to conventional sweepers (Table 19) and are designed to help meet National
Ambient Air Quality standards.
Table 18. Efficiencies of mechanical (broom) and vacuum-assisted sweepers
Constituent Mechanical sweeper efficiency (%) Vacuum-assisted sweeper efficiency (%}
Total Solids 55 93
Total Phosphorus 40 74
Total Nitrogen 42 77
COD 31 63
BOD 43 77
Lead 35 76
Zinc 47 85
Source: NVPDC (1992), as cited in Young et al. (1996).
Table 19. PM-10 Particulate removal efficiencies for
various sweepers
Sweeper type Removal Efficiency (%)
Mechanical - Model 1 -6.7
Mechanical - Model 2 8.6
Regenerative Air 31.4
Vacuum-assisted wet - Model 1 40.0
Vacuum-assisted wet - Model 2 82.0
Vacuum-assisted dry 99.6

Sweeping frequency and number of passes: To achieve a 30 percent removal of street dirt, the sweeping interval
should be less than two times the average interval between storms. To achieve 50 percent removal, sweeping must
occur at least at least once between storms. Generally two passes per run should be conducted, which will result in
the removal of up to 75 percent of total solids present before sweeping. Certain conditions may warrant increased
sweeping frequencies. These include streets with high traffic volumes in industrial areas and streets with high litter
or erosion zones. In addition, the sweeping frequency should be increased just before the wet season to remove
sediments accumulated during the summer.
Climate: Sweeping appears most effective in areas with distinct wet and dry seasons (CDM et al., 1993).
Factors that limit the overall effectiveness of streetsweeping programs include:
http://www.fhwa.dot.gov/environment/ultraurb/3 fs 16.htm 3/R/9007
Ullfd-UrDall DiVlr - rrlvvA I-agu J Ul'+
• Presence of parked cars and traffic congestion during sweeping.
• Poor road surface and curb conditions.
• Presence of construction projects nearby.
Considerations for Equipment Selection
The selection of the type of sweeper will depend on specific conditions prevailing at sites targeted for sweeping. In
general, mechanical sweepers are more effective at picking up large debris and cleaning wet streets and have lower
capital and operating costs. However, mechanical sweepers can create large amounts of airborne dust. Vacuum-
assisted and regenerative air sweepers are more effective at removing fine particles and associated heavy metals
but tend to be ineffective at cleaning wet streets. They may also be noisier than mechanical sweepers, which can
restrict the hours of operation in some areas. It may also be necessary to deploy a mechanical sweeper ahead of
vacuum-assisted sweepers to remove large debris.
The somewhat larger capital costs associated with the newer vacuum-assisted dry sweepers may be warranted for
areas where worker and public safety from respirable particulate matter is of concern. Vacuum-assisted sweepers
are capable of providing close to 100 percent removal of PM-10 particulates and also provide better overall removal
of sediment.
Maintenance and Operational Requirements
The overall maintenance requirements for mechanical sweepers are greater than those for vacuum-assisted and
regenerative air sweepers since mechanical sweepers contain more moving parts that require periodic replacement.
Vacuum-assisted dry sweepers have significantly less down time than water-based sweepers (less than 10 percent
of total operating time compared to about 50 percent for water-based sweepers) because they require no water
loading. In addition, clean-up and dumping times are shorter.
For an effective streetsweeping program, consideration should be given to the following operational requirements:
• Ensure there are adequately trained sweeper operators and maintenance personnel.
• Provide traffic control officers to enforce parking restrictions.
• Choose sweeping frequencies and cleaning routes to optimize overall sweeping efficiencies.
• Make appropriate arrangements for disposal of collected waste.
• Reduce source loadings through various measures such as public awareness of proper disposal procedures
for used oil and yard waste, and enforcement of erosion control and stormwater pollution prevention
practices at urban construction sites.
Cost Considerations
Conventional sweeper costs range from $69,000 to $127,000 (1995 dollars), with the higher end of this range
associated with vacuum-assisted and regenerative air sweepers (CDM, 1993). The useful life span of these
sweepers is generally four to seven years, and the operating cost associated with these sweepers about $70 per
hour (1996 dollars; Finley, 1996). The capital cost of vacuum-assisted dry sweepers is on the order of $170,000
(1996 dollars; Enviro Whirl Technologies, personal communication, 1996) with a projected useful life span of about
eight years and operating costs of approximately $35 per hour (Satterfield, 1996 dollars).
References
Camp Dresser & McKee (CDM), Larry Walker Associates, Uribe and Associates, and Resources Planning
Associates. 1993. California Stormwater Best Management Practice Municipal Handbook. BMP: Street Cleaning,
pp. 4-64 to 4-66.
Enviro Whirl Technologies, Inc. 1996. Product literature. Enviro Whirl Technologies, Inc., Centralia, IL.
Finley, S. 1996. Sweeping Works. Pavement Maintenance and Reconstruction. October/November, pp. 16-17.
NVPDC. 1992. Northern Virginia BMP Handbook: A Guide to Planning and Designing Best Management Practices
http://www.fhwa.dot.gov/environment/ultraurb/3fsI6.htm 3/8/2007
utira-urban tslvir - rrIW A
rage 4 or 4
in Northern Virginia. Prepared by Northern Virginia Planning District Commission (NVPDC) and Engineers and
Surveyors Institute.
Satterfield, C. 1996. Enviro Whirl I PM-10 Efficiency Study Removing Reentrained Road Dust. Prepared for Enviro
Whirl Technologies Inc. by Satterfield & Associates, June Lake, CA.
Sutherland, R.C., and S.L. Jelen. 1996. Studies Show Sweeping has Beneficial Impact on Stormwater Quality
APWA Reporter (November):8-23.
Young, G.K., S. Stein, P. Cole, T. Kammer, F. Graziano, and F. Bank. 1996. Evaluation and Management of
Highway Runoff Water Quality. FHWA-PD-96-032. Federal Highway Administration, Office of Environment and
Planning.
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