20051711 Ver 1_Complete File_20070827

Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
January 3, 2007
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
Mr. Dan Danieley
Executive Director
Burlington-Alamance Airport Authority
3441 North Aviation Drive
Burlington, North Carolina 27215
Alan W. Klimek, P.E. Director
Division of Water Quality
DWQ Project # 05-1711
Alamance County
Subject Property: Burlington-Alamance Region al'Airport Runway 6-24 Extension
APPROVAL OF STORNIWATER MANAGEMENT PLAN
Dear Mr. Danieley:
On December 27, 2006, the Division of Water Quality (DWQ) received the revised stormwater
management plan prepared by your engineer, Mr. Eric Stumph, P.E., of Talbert & Bright. This
plan has been reviewed and satisfies the stormwater management conditions of the 401 Water
Quality Certification issued by the DWQ on February 14, 2006.
The structural stormwater practices as approved by DWQ as well as drainage patterns must be
maintained in perpetuity. No changes to the structural stormwater practices shall be made
without written authorization from the DWQ. Stormwater easements shall be recorded for a
distance of at least 10 feet on each side of all storm water conveyances on all lots containing
these structures including future access for maintenance. The stormwater easements shall allow
for the ability to maintain the structures, perform corrective actions as described above and shall
provide protection of the structures from potential alternations by future property owners.
This letter completes the review of the DWQ under Section 401 of the Clean Water Act. If you
have any questions, please contact me at 919-715-3425.
Sincerely,
av'?- co.!?>
Annette Lucas, Environmental Engineer
401 Oversight/Express Review Permitting Unit
AMUijln
401 Oversight/Express Review Permitting Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604
Phone: [phone] / FAX [phone] / Internet: bitenr.state. ne,usinc?v etlands
Nb
One
u Carolina
An Equal Opportunity/Affirmative Action Employer - 500,o Recycled/10% Post Consumer Paper
•i
Lail Laiiicicy
Page 2 of 2
January 3, 2007
cc: Daryl Lamb, DWQ Winston-Salem Regional Office
USACE Raleigh Regulatory Field Office
File Copy
Central Files
Eric Stumph, Talbert & Bright, Inc., 4810 Shelley Drive, Wilmington, NC 28405
Filename: 05-1711_BurlingtonAl2manceAirport_(Al2mance) SW_Approval
TA LU RT & MIGHT
December 21, 2006
Ms Annette Lucas
North Carolina Department of Environment and Natural Resources
Division of Water Quality
401 Oversight/Express Review Permits Division
1650 Mail Service Center
Raleigh, North Carolina 27699-1650
RE: Burlington-Alatnance Airport Authority
Runway 6-24 Extension - Stornnvater Management Plan
TBI Reference No. 2101-0602
DWQ #05-1711
Dear Ms Lucas:
We have prepared supplemental data for the referenced Stormwater Management Plan, in response to
your review comments of December 14, 2006. v? sets of materials are enclosed, as follows:
Revised Plan Sheet #1, with the callout for Drainage Basin #4 corrected. Swale numbers
have also been added, for reference to associated worksheets.
• Revised specification section T-901, with added provisions regarding fertilizing.
Complete set of detention basin and swale worksleets, with supporting documentation.
Please let me know if you have any further questions or need any additional information to complete
the review.
Sincerely,
t ric Stumph, P.E.
Project Manager
C: Mr. Dan Danieley (w/encl.)
INC. INI,I RING & HANNING CONSUI_IAN IS
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ITEM T-901
SEEDING
DESCRIPTION
901-1.1 This item shall consist of soil preparation, seedingliming and fertilizing the
areas shown on the plans or as directed by the ENGINEER in accordance
with these specifications.
MATERIALS
901-2.1 SEED The species and application rates of grass, legume, and cover-crop
seed furnished shall be those stipulated herein. Seed shall conform to the
requirements of Fed. Spec. A-A-2671.
Seed shall be furnished separately or in mixtures in standard containers with
the seed name, lot number, net weight, percentages of purity and of
germination and hard seed, and percentage of maximum weed seed content
clearly marked for each kind of seed. The Contractor shall furnish the
ENGINEER duplicate signed copies of a statement by the vendor certifying
that each lot of seed has been tested by a recognized laboratory for seed
testing within 6 months of date of delivery. This statement shall include:
name and address of laboratory, date of test, lot number for each kind of
seed, and the results of tests as to name, percentages of purity and of
germination, and percentage of weed content for each kind of seed furnished,
and, in case of a mixture, the proportions of each kind of seed.
Seeds shall be applied as follows:
Permanent Seeding
Seed Maximum Seed Purity Maximum Weed Seed Minimum Rate of
Application
Tall Fescue 90% 2.5% 80 lb/acre
Kobe Lespedeza 90% 2.5% 40 lb/acre
Rye (Grain)' 90% 2.5% 40 lb/acre
Add Rye (Grain) only if seeding occurs prior to May 1 or after August 15.
Seeding shall be performed during the period between August 25 and September
15 or February 15 and March 21 inclusive, unless otherwise approved by the
ENGINEER.
2101-0602 T-901-1 Revised 1212112006
901-2.2 LIME. Lime shall be ground limestone containing not less than 85% of total
carbonates, and shall be ground to such fineness that 90% will pass through
a No. 20 mesh sieve and 50% will pass through a No. 100 mesh sieve.
Coarser material will be acceptable, providing the rates of application are
increased to provide not less than the minimum quantities and depth specified
in the special provisions on the basis of the two sieve requirements above.
Dolomitic lime or a high magnesium lime shall contain at least 10% of
magnesium oxide. Lime shall be applied at the rate of 4,000 pounds per
acre. All liming materials shall conform to the requirements of ASTM C 602.
901-2.3 FERTILIZER. Fertilizer shall be standard commercial fertilizers supplied
separately or in mixtures containing the percentages of total nitrogen,
available phosphoric acid, and water-soluble potash. They shall be applied at
the rate and to the depth specified herein, and shall meet the requirements of
Fed. Spec. A-A-1909 and applicable state laws. They shall be furnished in
standard containers with name, weight, and guaranteed analysis of contents
clearly marked thereon. No cyanamide compounds or hydrated lime shall be
permitted in mixed fertilizers.
The fertilizers may be supplied in one of the following forms:
a. A dry, free-flowing fertilizer suitable for application by a common
fertilizer spreader;
b. A finely-ground fertilizer soluble in water, suitable for application by
power sprayers; or
c. A granular or pellet form suitable for application by blower equipment.
Fertilizers shall be 10-10-10 commercial fertilizer and shall be spread at the
rate of 1,000 pounds per acre at the time of seeding operations. Following
intial seeding operations, use of additional fertilizer shall be avoided so as to
minimize transport of excess nutrients to Gunn Creek and its tributaries,
which have been classified as nutrient sensitive waters. Any additional
fertilizing shall be limited to the minimum necessary to maintain the health of
the vegetation in the project grassed filter strips, swales and extended dry
detention basins.
901-2.4 SOIL FOR REPAIRS. The soil for fill and topsoiling of areas to be repaired
shall be at least of equal quality to that which exists in areas adjacent to the
area to be repaired. The soil shall be relatively free from large stones, roots,
stumps, or other materials that will interfere with subsequent sowing of seed,
compacting, and establishing turf, and shall be approved by the ENGINEER
before being placed.
2101-0602 T-901-2 Revised 1212112006
CONSTRUCTION METHODS
901-3.1 ADVANCE PREPARATION AND CLEANUP. After grading of areas has
been completed and before applying fertilizer and ground limestone, areas to
be seeded shall be raked or otherwise cleared of stones larger than 2 inches
(50 mm) in any diameter, sticks, stumps, and other debris that might interfere
with sowing of seed, growth of grasses, or subsequent maintenance of
grass-covered areas. If any damage by erosion or other causes has occurred
after the completion of grading and before beginning the application of
fertilizer and ground limestone, the Contractor shall repair such damage. This
may include filling gullies, smoothing irregularities, and repairing other
incidental damage.
An area to be seeded shall be considered a satisfactory seedbed without
additional treatment if it has recently been thoroughly loosened and worked to
a depth of not less than 5 inches (125 mm) as a result of grading operations
and, if immediately prior to seeding, the top 3 inches (75 mm) of soil is loose,
friable, reasonably free from large clods, rocks, large roots, or other
undesirable matter, and if shaped to the required grade.
However, when the area to be seeded is sparsely sodded, weedy, barren and
unworked, or packed and hard, any grass and weeds shall first be cut or
otherwise satisfactorily disposed of, and the soil then scarified or otherwise
loosened to a depth not less than 5 inches (125 mm). Clods shall be broken
and the top 3 inches (75 mm) of soil shall be worked into a satisfactory
seedbed by discing, or by use of cultipackers, rollers, drags, harrows, or other
appropriate means.
901-3.2 DRY APPLICATION METHOD.
a. Liming. Lime shall be applied separately and prior to the application of
any fertilizer or seed and only on seedbeds that have previously been
prepared as described above. The lime shall then be worked into the top 3
inches (75 mm) of soil after which the seedbed shall again be properly graded
and dressed to a smooth finish.
b. Fertilizing. Following advance preparations and cleanup fertilizer shall
be uniformly spread at the rate that will provide not less than the minimum
quantity stated in paragraph 901-2.3.
c. Seeding. Grass seed shall be sown at the rate specified in paragraph
901-2.1 immediately after fertilizing, and the fertilizer and seed shall be raked
within the depth range stated in the special provisions. Seeds of legumes,
either alone or in mixtures, shall be inoculated before mixing or sowing, in
accordance with the instructions of the manufacturer of the inoculant. When
seeding is required at other than the seasons shown on the plans or in the
2101-0602 T-901-3 Revised 1212112006
special provisions, a cover crop shall be sown by the same methods required
for grass and legume seeding.
d. Rolling. After the seed has been properly covered, the seedbed shall
be immediately compacted by means of an approved lawnroller, weighing 40
to 65 pounds per foot (60 to 97 kg per meter) of width for clay soil (or any soil
having a tendency to pack), and weighing 150 to 200 pounds per foot (223 to
298 kg per meter) of width for sandy or light soils.
901-3.3 WET APPLICATION METHOD.
a. General. The Contractor may elect to apply seed and fertilizer (and
lime, if required) by spraying them on the previously prepared seedbed in the
form of an aqueous mixture and by using the methods and equipment
described herein. The rates of application shall be as specified in the special
provisions.
b. Spraying Equipment. The spraying equipment shall have a container
or water tank equipped with a liquid level gauge calibrated to read in
increments not larger than 50 gallons (190 liters) over the entire range of the
tank capacity, mounted so as to be visible to the nozzle operator. The
container or tank shall also be equipped with a mechanical power-driven
agitator capable of keeping all the solids in the mixture in complete
suspension at all times until used.
The unit shall also be equipped with a pressure pump capable of delivering
100 gallons (380 liters) per minute at a pressure of 100 pounds per square
inch (690 kPa). The pump shall be mounted in a line that will recirculate the
mixture through the tank whenever it is not being sprayed from the nozzle. All
pump passages and pipe lines shall be capable of providing clearance for 5/8
inch (15 mm) solids. The power unit for the pump and agitator shall have
controls mounted so as to be accessible to the nozzle operator. There shall
be an indicating pressure gauge connected and mounted immediately at the
back of the nozzle.
The nozzle pipe shall be mounted on an elevated supporting stand in such a
manner that it can be rotated through 360 degrees horizontally and inclined
vertically from at least 20 degrees below to at least 60 degrees above the
horizontal. There shall be a quick-acting, three-way control valve connecting
the recirculating line to the nozzle pipe and mounted so that the nozzle
operator can control and regulate the amount of flow of mixture delivered to
the nozzle. At least three different types of nozzles shall be supplied so that
mixtures may be properly sprayed over distance varying from 20 to 100 feet
(6 to 30 m). One shall be a close-range ribbon nozzle, one a medium-range
ribbon nozzle, and one a long-range jet nozzle. For case of removal and
2101-0602 T-901-4 Revised 1212112006
cleaning, all nozzles shall be connected to the nozzle pipe by means of
quick-release couplings.
In order to reach areas inaccessible to the regular equipment, an extension
hose at least 50 feet (15 m) in length shall be provided to which the nozzles
may be connected.
c. Mixtures. Lime, if required, shall be applied separately, in the quantity
specified, prior to the fertilizing and seeding operations. Not more than 220
pounds (100 kg) of lime shall be added to and mixed with each 100 gallons
(380 liters) of water. Seed and fertilizer shall be mixed together in the relative
proportions specified, but not more than a total of 220 pounds (100 kg) of
these combined solids shall be added to and mixed with each 100 gallons
(380 liters) of water.
All water used shall be obtained from fresh water sources and shall be free
from injurious chemicals and other toxic substances harmful to plant life.
Brackish water shall not be used at any time. The Contractor shall identify to
the ENGINEER all sources of water at least 2 weeks prior to use. The
ENGINEER may take samples of the water at the source or from the tank at
any time and have a laboratory test the samples for chemical and saline
content. The Contractor shall not use any water from any source that is
disapproved by the ENGINEER following such tests.
All mixtures shall be constantly agitated from the time they are mixed until
they are finally applied to the seedbed. All such mixtures shall be used within
2 hours from the time they were mixed or they shall be wasted and disposed
of at locations acceptable to the ENGINEER.
d. Spraying. Lime, if required, shall be sprayed only upon previously
prepared seedbeds. After the applied lime mixture has dried, the lime shall
be worked into the top 3 inches (8 cm), after which the seedbed shall again
be properly graded and dressed to a smooth finish.
Mixtures of seed and fertilizer shall only be sprayed upon previously prepared
seedbeds on which the lime, if required, shall already have been worked in.
The mixtures shall be applied by means of a high-pressure spray that shall
always be directed upward into the air so that the mixtures will fall to the
ground like rain in a uniform spray. Nozzles or sprays shall never be directed
toward the ground in such a manner as might produce erosion or runoff.
Particular care shall be exercised to insure that the application is made
uniformly and at the prescribed rate and to guard against misses and
overlapped areas. Proper predetermined quantities of the mixture in
accordance with specifications shall be used to cover specified sections of
known area. Checks on the rate and uniformity of application may be made
2101-0602 T-901-5 Revised 1212112006
by observing the degree of wetting of the ground or by distributing test sheets
of paper or pans over the area at intervals and observing the quantity of
material deposited thereon.
On surfaces that are to be mulched as indicated by the plans or designated
by the ENGINEER, seed and fertilizer applied by the spray method need not
be raked into the soil or rolled. However, on surfaces on which mulch is not
to be used, the raking and rolling operations will be required after the soil has
dried.
901-3.4 MAINTENANCE OF SEEDED AREAS. The Contractor shall protect seeded
areas against traffic or other use by warning signs or barricades, as approved
by the ENGINEER. Surfaces gullied or otherwise damaged following seeding
shall be repaired by regrading and reseeding as directed. The Contractor
shall mow, water as directed, and otherwise maintain seeded areas in a
satisfactory condition until final inspection and acceptance of the work.
When either the dry or wet application method outlined above is used for work
done out of season, it will be required that the Contractor establish a good
stand of grass of uniform color and density to the satisfaction of the
ENGINEER. A grass stand shall be considered adequate when bare spots
are one square foot or less, randomly dispersed, and do not exceed 3% of the
area seeded. If at the time when the contract has been otherwise completed
it is not possible to make an adequate determination of the color, density, and
uniformity of such stand of grass, payment for the unaccepted portions of the
areas seeded out of season will be withheld until such time as these
requirements have been met.
METHOD OF MEASUREMENT
901-4.1 The quantity of seeding to be paid for shall be the number of acres]
measured on the ground surface, completed and accepted.
BASIS OF PAYMENT
901-5.1 Payment shall be made at the contract unit price per acre or fraction thereof,
which price and payment shall be full compensation for furnishing and placing
all material and for all labor, equipment, tools, and incidentals necessary to
complete the work prescribed in this item.
Payment will be made under:
Item 901-5.1 Seeding-per acre
2101-0602 T-901-6 Revised 1212112006
MATERIAL REQUIREMENTS
ASTM C 602
ASTM D 977
FED SPEC A-A-1909
FED SPEC A-A-2671
Agricultural Liming Materials
Emulsified Asphalt
Fertilizer
Seeds, Agriculture
END OF ITEM T-901
2101-0602 T-901-7 Revised 1212112006
ITEM T-901
SEEDING
DESCRIPTION
901-1.1 This item shall consist of soil preparation, seedingliming and fertilizing the
areas shown on the plans or as directed by the ENGINEER in accordance
with these specifications.
MATERIALS
901-2.1 SEED The species and application rates of grass, legume, and cover-crop
seed furnished shall be those stipulated herein. Seed shall conform to the
requirements of Fed. Spec. A-A-2671.
Seed shall be furnished separately or in mixtures in standard containers with
the seed name, lot number, net weight, percentages of purity and of
germination and hard seed, and percentage of maximum weed seed content
clearly marked for each kind of seed. The Contractor shall furnish the
ENGINEER duplicate signed copies of a statement by the vendor certifying
that each lot of seed has been tested by a recognized laboratory for seed
testing within 6 months of date of delivery. This statement shall include:
name and address of laboratory, date of test, lot number for each kind of
seed, and the results of tests as to name, percentages of purity and of
germination, and percentage of weed content for each kind of seed furnished,
and, in case of a mixture, the proportions of each kind of seed.
Seeds shall be applied as follows:
Permanent Seeding
Seed Maximum Seed Purity Maximum Weed Seed Minimum Rate of
Application
Tall Fescue 90% 2.5% 80 lb/acre
Kobe Lespedeza 90% 2.5% 40 lb/acre
Rye (Grain)' 90% 2.5% 40 lb/acre
1 Add Rye (Grain) only if seeding occurs prior to May 1 or after August 15.
Seeding shall be performed during the period between August 25 and September
15 or February 15 and March 21 inclusive, unless otherwise approved by the
ENGINEER.
2101-0602 T-901-1 Revised 1212112006
901-2.2 LIME. Lime shall be ground limestone containing not less than 85% of total
carbonates, and shall be ground to such fineness that 90% will pass through
a No. 20 mesh sieve and 50% will pass through a No. 100 mesh sieve.
Coarser material will be acceptable, providing the rates of application are
increased to provide not less than the minimum quantities and depth specified
in the special provisions on the basis of the two sieve requirements above.
Dolomitic lime or a high magnesium lime shall contain at least 10% of
magnesium oxide. Lime shall be applied at the rate of 4,000 pounds per
acre. All liming materials shall conform to the requirements of ASTM C 602.
901-2.3 FERTILIZER. Fertilizer shall be standard commercial fertilizers supplied
separately or in mixtures containing the percentages of total nitrogen,
available phosphoric acid, and water-soluble potash. They shall be applied at
the rate and to the depth specified herein, and shall meet the requirements of
Fed. Spec. A-A-1909 and applicable state laws. They shall be furnished in
standard containers with name, weight, and guaranteed analysis of contents
clearly marked thereon. No cyanamide compounds or hydrated lime shall be
permitted in mixed fertilizers.
The fertilizers may be supplied in one of the following forms:
a. A dry, free-flowing fertilizer suitable for application by a common
fertilizer spreader;
b. A finely-ground fertilizer soluble in water, suitable for application by
power sprayers; or
c. A granular or pellet form suitable for application by blower equipment.
Fertilizers shall be 10-10-10 commercial fertilizer and shall be spread at the
rate of 1,000 pounds per acre at the time of seeding operations. Following
intial seeding operations, use of additional fertilizer shall be avoided so as to
minimize transport of excess nutrients to Gunn Creek and its tributaries,
which have been classified as nutrient sensitive waters. Any additional
fertilizing shall be limited to the minimum necessary to maintain the health of
the vegetation in the project grassed filter strips, swales and extended dry
detention basins.
901-2.4 SOIL FOR REPAIRS. The soil for fill and topsoiling of areas to be repaired
shall be at least of equal quality to that which exists in areas adjacent to the
area to be repaired. The soil shall be relatively free from large stones, roots,
stumps, or other materials that will interfere with subsequent sowing of seed,
compacting, and establishing turf, and shall be approved by the ENGINEER
before being placed.
2101-0602 T-901-2 Revised 1212112006
CONSTRUCTION METHODS
901-3.1 ADVANCE PREPARATION AND CLEANUP. After grading of areas has
been completed and before applying fertilizer and ground limestone, areas to
be seeded shall be raked or otherwise cleared of stones larger than 2 inches
(50 mm) in any diameter, sticks, stumps, and other debris that might interfere
with sowing of seed, growth of grasses, or subsequent maintenance of
grass-covered areas. If any damage by erosion or other causes has occurred
after the completion of grading and before beginning the application of
fertilizer and ground limestone, the Contractor shall repair such damage. This
may include filling gullies, smoothing irregularities, and repairing other
incidental damage.
An area to be seeded shall be considered a satisfactory seedbed without
additional treatment if it has recently been thoroughly loosened and worked to
a depth of not less than 5 inches (125 mm) as a result of grading operations
and, if immediately prior to seeding, the top 3 inches (75 mm) of soil is loose,
friable, reasonably free from large clods, rocks, large roots, or other
undesirable matter, and if shaped to the required grade.
However, when the area to be seeded is sparsely sodded, weedy, barren and
unworked, or packed and hard, any grass and weeds shall first be cut or
otherwise satisfactorily disposed of, and the soil then scarified or otherwise
loosened to a depth not less than 5 inches (125 mm). Clods shall be broken
and the top 3 inches (75 mm) of soil shall be worked into a satisfactory
seedbed by discing, or by use of cultipackers, rollers, drags, harrows, or other
appropriate means.
901-3.2 DRY APPLICATION METHOD.
a. Liming. Lime shall be applied separately and prior to the application of
any fertilizer or seed and only on seedbeds that have previously been
prepared as described above. The lime shall then be worked into the top 3
inches (75 mm) of soil after which the seedbed shall again be properly graded
and dressed to a smooth finish.
b. Fertilizing. Following advance preparations and cleanup fertilizer shall
be uniformly spread at the rate that will provide not less than the minimum
quantity stated in paragraph 901-2.3.
c. Seeding. Grass seed shall be sown at the rate specified in paragraph
901-2.1 immediately after fertilizing, and the fertilizer and seed shall be raked
within the depth range stated in the special provisions. Seeds of legumes,
either alone or in mixtures, shall be inoculated before mixing or sowing, in
accordance with the instructions of the manufacturer of the inoculant. When
seeding is required at other than the seasons shown on the plans or in the
2101-0602 T-901-3 Revised 1212112006
special provisions, a cover crop shall be sown by the same methods required
for grass and legume seeding.
d. Rolling. After the seed has been properly covered, the seedbed shall
be immediately compacted by means of an approved lawnroller, weighing 40
to 65 pounds per foot (60 to 97 kg per meter) of width for clay soil (or any soil
having a tendency to pack), and weighing 150 to 200 pounds per foot (223 to
298 kg per meter) of width for sandy or light soils.
901-3.3 WET APPLICATION METHOD.
a. General. The Contractor may elect to apply seed and fertilizer (and
lime, if required) by spraying them on the previously prepared seedbed in the
form of an aqueous mixture and by using the methods and equipment
described herein. The rates of application shall be as specified in the special
provisions.
b. Spraying Equipment. The spraying equipment shall have a container
or water tank equipped with a liquid level gauge calibrated to read in
increments not larger than 50 gallons (190 liters) over the entire range of the
tank capacity, mounted so as to be visible to the nozzle operator. The
container or tank shall also be equipped with a mechanical power-driven
agitator capable of keeping all the solids in the mixture in complete
suspension at all times until used.
The unit shall also be equipped with a pressure pump capable of delivering
100 gallons (380 liters) per minute at a pressure of 100 pounds per square
inch (690 kPa). The pump shall be mounted in a line that will recirculate the
mixture through the tank whenever it is not being sprayed from the nozzle. All
pump passages and pipe lines shall be capable of providing clearance for 5/8
inch (15 mm) solids. The power unit for the pump and agitator shall have
controls mounted so as to be accessible to the nozzle operator. There shall
be an indicating pressure gauge connected and mounted immediately at the
back of the nozzle.
The nozzle pipe shall be mounted on an elevated supporting stand in such a
manner that it can be rotated through 360 degrees horizontally and inclined
vertically from at least 20 degrees below to at least 60 degrees above the
horizontal. There shall be a quick-acting, three-way control valve connecting
the recirculating line to the nozzle pipe and mounted so that the nozzle
operator can control and regulate the amount of flow of mixture delivered to
the nozzle. At least three different types of nozzles shall be supplied so that
mixtures may be properly sprayed over distance varying from 20 to 100 feet
(6 to 30 m). One shall be a close-range ribbon nozzle, one a medium-range
ribbon nozzle, and one a long-range jet nozzle. For case of removal and
2101-0602 T-901-4 Revised 1212112006
cleaning, all nozzles shall be connected to the nozzle pipe by means of
quick-release couplings.
In order to reach areas inaccessible to the regular equipment, an extension
hose at least 50 feet (15 m) in length shall be provided to which the nozzles
may be connected.
c. Mixtures. Lime, if required, shall be applied separately, in the quantity
specified, prior to the fertilizing and seeding operations. Not more than 220
pounds (100 kg) of lime shall be added to and mixed with each 100 gallons
(380 liters) of water. Seed and fertilizer shall be mixed together in the relative
proportions specified, but not more than a total of 220 pounds (100 kg) of
these combined solids shall be added to and mixed with each 100 gallons
(380 liters) of water.
All water used shall be obtained from fresh water sources and shall be free
from injurious chemicals and other toxic substances harmful to plant life.
Brackish water shall not be used at any time. The Contractor shall identify to
the ENGINEER all sources of water at least 2 weeks prior to use. The
ENGINEER may take samples of the water at the source or from the tank at
any time and have a laboratory test the samples for chemical and saline
content. The Contractor shall not use any water from any source that is
disapproved by the ENGINEER following such tests.
All mixtures shall be constantly agitated from the time they are mixed until
they are finally applied to the seedbed. All such mixtures shall be used within
2 hours from the time they were mixed or they shall be wasted and disposed
of at locations acceptable to the ENGINEER.
d. Spraying. Lime, if required, shall be sprayed only upon previously
prepared seedbeds. After the applied lime mixture has dried, the lime shall
be worked into the top 3 inches (8 cm), after which the seedbed shall again
be properly graded and dressed to a smooth finish.
Mixtures of seed and fertilizer shall only be sprayed upon previously prepared
seedbeds on which the lime, if required, shall already have been worked in.
The mixtures shall be applied by means of a high-pressure spray that shall
always be directed upward into the air so that the mixtures will fall to the
ground like rain in a uniform spray. Nozzles or sprays shall never be directed
toward the ground in such a manner as might produce erosion or runoff.
Particular care shall be exercised to insure that the application is made
uniformly and at the prescribed rate and to guard against misses and
overlapped areas. Proper predetermined quantities of the mixture in
accordance with specifications shall be used to cover specified sections of
known area. Checks on the rate and uniformity of application may be made
2101-0602 T-901-5 Revised 1212112006
by observing the degree of wetting of the ground or by distributing test sheets
of paper or pans over the area at intervals and observing the quantity of
material deposited thereon.
On surfaces that are to be mulched as indicated by the plans or designated
by the ENGINEER, seed and fertilizer applied by the spray method need not
be raked into the soil or rolled. However, on surfaces on which mulch is not
to be used, the raking and rolling operations will be required after the soil has
dried.
901-3.4 MAINTENANCE OF SEEDED AREAS. The Contractor shall protect seeded
areas against traffic or other use by warning signs or barricades, as approved
by the ENGINEER. Surfaces gullied or otherwise damaged following seeding
shall be repaired by regrading and reseeding as directed. The Contractor
shall mow, water as directed, and otherwise maintain seeded areas in a
satisfactory condition until final inspection and acceptance of the work.
When either the dry or wet application method outlined above is used for work
done out of season, it will be required that the Contractor establish a good
stand of grass of uniform color and density to the satisfaction of the
ENGINEER. A grass stand shall be considered adequate when bare spots
are one square foot or less, randomly dispersed, and do not exceed 3% of the
area seeded. If at the time when the contract has been otherwise completed
it is not possible to make an adequate determination of the color, density, and
uniformity of such stand of grass, payment for the unaccepted portions of the
areas seeded out of season will be withheld until such time as these
requirements have been met.
METHOD OF MEASUREMENT
901-4.1 The quantity of seeding to be paid for shall be the number of acres]
measured on the ground surface, completed and accepted.
BASIS OF PAYMENT
901-5.1 Payment shall be made at the contract unit price per acre or fraction thereof,
which price and payment shall be full compensation for furnishing and placing
all material and for all labor, equipment, tools, and incidentals necessary to
complete the work prescribed in this item.
Payment will be made under:
Item 901-5.1 Seeding-per acre
2101-0602 T-901-6 Revised 1212112006
MATERIAL REQUIREMENTS
ASTM C 602
ASTM D 977
FED SPEC A-A-1909
FED SPEC A-A-2671
Agricultural Liming Materials
Emulsified Asphalt
Fertilizer
Seeds, Agriculture
END OF ITEM T-901
2101-0602 T-901-7 Revised 1212112006
Project No. DWQ 05- /-7// L ,
D41
IVISION OF WATER QUALITY
401 EXTENDED DRY DETENTION BASIN WORKSHEET
DWQ Stormwater Management Plan Review
At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and
specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance
agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and
approval of the project
PROJECT INFORMATION (please complete the following information):
Project Name: 23 VRun/6 7vN-Ae- A.+14NCC-

Contact Person: I c S 7V "'+ f+ Phone Number. P71o 1 7 4 3- 5 3 sv
-4
4L-f3tnr 14 ,gQ/cir , V910 SfiE??tY /J2, Gv??.?t in?Groni .vim z8?fu
For projects with multiple basins, specify which basin this worksheet applies to:_ 1>i2 Ai-/A-a-t g/Csir/ f
Drainage Area: acres Percent Impervious Area: %
II. REQUIRED ITEMS CHECKLIST Z,& S &C_
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of
Environment, Health and Natural Resources, November 1995) and Administrative Code Section: 15 A NCAC 2H .1008. Initial in the space
provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not
been met, attach an explanation of why.
Applicants Initials
Either capture runoff from 1 yr., 24 hour storm and release over a 48 hour period, or
capture runoff from 1 inch stonn and draw down over a period of 2 to 5 days.
Please provide routing for 1 yr. 24 hr. event or volume from 1 inch rain
_The basin length to width ratio is greater than _C7,
2 5 Ac . ?T
The basin side slopes are no steeper than 3:1.
A small permanent pool at outlet orifice is provided to reduce dogging. w tTH1r.r per C4-'s r 11'141UW0 (-E
An emergency drain to completely empty the basin is provided.
Vegetation plan prepared is specified on plans.
Basin to be stabilized within 14 days of construction is specified.
-Sediment storage (20% of detention volume) in addition to detention volume is provided.
Inlet and outlet erosion control measures to prevent scour are provided.
Additional treatment to meet the 85% TSS removal efficiency is provided.
Access for dean-out and maintenance is provided.
-Inlet plunge pool or other energy dissipation is provided.
_Forebay is provided to capture sediment and minimize clean-out problems.
Uncompaded natural soils are utilized to promote vegetation and reduce sedimentation. PER G 57?WDAyZb
Seasonal high water table is at least 1 foot below bottom of basin.
If used as a temporary sediment basin, plans indicate clean-out prior to final operation. 4-y .v0'
A site specific operation and maintenance plan with the following provisions is provided.
The 0&M agreement is signed by the responsible party and notarized.
'Elrion/AL l?iRPo4T, ,P?vwAy 6-2`f E'ri?1t/S/on/
Project No. DWQ 05- /-7//
DIVISION OF WATER QUALITY' 1-? f
401 EXTENDED DRY DETENTION BASIN WORKSHEET
DWQ Stormwater Management Plan Review
At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and
specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance
agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and
approval of the project
1. PROJECT INFORMATION (please complete the following information):
Project Name: QVf1-1W67V1V-AcA,,114,1C6-
iPEGioNAL
Fr?7t/S(Jn/
,1,vwA y 6-'Z V
Contact Person: ?2 f c 5 7v-1 /+ Phone Number. (,7tlo) 7 c 3 - s 3 s-o
T4?-J3cYL7 / 86Z /err, VRIa SHE«-G?, /J4, W/?.yt iNG7v N
_1V_ 7-1? V J
For projects with multiple basins, specify which basin this worksheet applies to:_
Drainage Area: acres Percent Im envious Area: %
II. REQUIRED ITEMS CHECKLIST J y? hC_ rf3
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of
Environment, Health and Natural Resources, November 1995) and Administrative Code Section: 15 A NCAC 2H .1008. Initial in the space
provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not
been met, attach an explanation of why.
Applicants Initials
Either capture runoff from 1 yr., 24 hour storm and release over a 48 hour period, or
_capture runoff from 1 inch storm and draw down over a period of 2 to 5 days.
Please provide routing for 1 yr. 24 hr. event or volume from 1 inch rain °? 17
The basin length to width ratio is greater than 3:1. Ac . ,cT
The basin side slopes are no steeper than 3:1.
A small permanent pool at outlet orifice is provided to reduce dogging. w iTNiri Pe-6_C-+s r- ,Mq,vWC
An emergency drain to completely empty the basin is provided. s TIZV C-7-OfZZ.
Vegetation plan prepared is specified on plans.
-Basin to be stabilized within 14 days of construction is specified.
Sediment storage (20% of detention volume) in addition to detention volume is provided.
.Inlet and outlet erosion control measures to prevent scour are provided.
Additional treatment to meet the 85% TSS removal efficiency is provided.
Access for dean-out and maintenance is provided.
Inlet plunge pool or other energy dissipation is provided.
Forebay is provided to capture sediment and minimize clean-out problems.
Uncompacted natural soils are utilized to promote vegetation and reduce sedimentation. PER I,-A4 5?1,ti/D/I ,
Seasonal high water table is at least 1 foot below bottom of basin. V -S -7Z) P
.If used as a temporary sediment basin, plans indicate clean-out prior to final operation. 'va7-
A site specific operation and maintenance plan with the following provisions is provided.
The 0&M agreement is signed by the responsible party and notarized.
Xd,0a2T-
Project No. DWQ 05-- ?7// / . 1 `n 3
DIVISION OF WATER QUALITY ?j?S t N
401 EXTENDED DRY DETENTION BASIN WORKSHEET
DWQ Stormwater Management Plan Review
At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and
specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance
agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and
approval of the project
1. PROJECT INFORMATION (please complete the following information):
Project Name: 13V9C1 67-V"-AcA,1.14NCE Iec6-io4416-
?NwA,- 6-2 1rl F,rTt?t/Slon/
Contact Person: I c 57-V A-1 /9f+ Phone Number. 67t'( j) c 3 - 5 3 sv
-r4-i-&cn T- 8,e 16-Hr
For projects with multiple basins, specify which basin this worksheet applies to:_
Drainage Area: acres Percent Impervious Area: %
II. REQUIRED ITEMS CHECKLIST X, a
,vc z8Ve
Dr2 a ??? ,S,?s.,? 3
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of
Environment, Health and Natural Resources, November 1995) and Administrative Code Section: 15 A NCAC 2H .1008. Initial in the space
provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not
been met, attach an explanation of why.
Applicants Initials
Either capture runoff from 1 yr., 24 hour storm and release over a 48 hour period, or
capture runoff from 1 inch storm and draw down over a period of 2 to 5 days. Please provide routing for 1 yr. 24 hr. event or volume from 1 inch rain o, : /0"
The basin length to width ratio is greater than 3:1. C, Ac • ,c7-
-The basin side slopes are no steeper than 3:1.
_A small permanent pool at outlet orifice is provided to reduce dogging. w /7Hinr P2FC4-%r M44111a GE
An emergency drain to completely empty the basin is provided. 5 m v c-7v2E .
Vegetation plan prepared is specified on plans.
.Basin to be stabilized within 14 days of construction is specified.
_Sediment storage (20% of detention volume) in addition to detention volume is provided.
Inlet and outlet erosion control measures to prevent scour are provided.
Additional treatment to meet the 85% TSS removal efficiency is provided.
Access for dean-out and maintenance is provided.
Inlet plunge pool or other energy dissipation is provided.
Forebay is provided to capture sediment and minimize clean-out problems.
Uncompacted natural soils are utilized to promote vegetation and reduce sedimentation.
Seasonal high water table is at least 1 foot below bottom of basin.
If used as a temporary sediment basin, plans indicate clean-out prior to final operation.
A site specific operation and maintenance plan with the following provisions is provided.
The 0&M agreement is signed by the responsible party and notarized.
XAYPa/L7-
PER Gsi? STJ1,a/DA?
SPEG/GIriA7Zr-S ? P ??i
Alb
Project No. DWQ CAS /7// 5k k ( I`'
DIVISION OF WATER QUALITY
401 EXTENDED DRY DETENTION BASIN WORKSHEET
DWQ Stormwater Management Plan Review:
At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and
specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance
agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and
approval of the project
PROJECT INFORMATION (please complete the following information):
Project Name: Q uRZ-1W6 7'D,
Contact Person: 5
T4?-f3cYLT ?
For projects with multiple basins, specie
Drainage kea?:.j acres
II. REQUIRED I/T MS CHECKLIST
r%'--" --H Phone Number. 67(o) 7 c 3 -- S 3 Sv
8,e16-NT YS/a Sf1ELLer oa, W/,-m /N6TUN Nc?z y
which basin this worksheet applies to:_ Dr2 a ?? ,g,f s ?,-?
Percent Impervious Area: n-- %/
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of
Environment, Health and Natural Resources, November 1995) and Administrative Code Section: 15 A NCAC 2H .1008. Initial in the space
provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not
been met, attach an explanation of why.
Applicants Initials
Either capture runoff from 1 yr., 24 hour storm and release over a 48 hour period, or
_capture runoff from 1 inch storm and draw down over a period of 2 to 5 days. j
Please provide routing for 1 yr. 24 hr. event or volume from 1 inch rain °,
_The basin length to width ratio is greater than 3:1. C71 p A - • ,?T
The basin side slopes are no steeper than 3:1. U
A small permanent pool at outlet orifice is provided to reduce clogging. w /7y/nr PeFC.t%r ,1'J4AWa GE
An emergency drain to completely empty the basin is provided. 07-T2 u Gj1J26,
Vegetation plan prepared is specified on plans.
Basin to be stabilized within 14 days of construction is specified.
-Sediment storage (20% of detention volume) in addition to detention volume is provided.
Inlet and outlet erosion control measures to prevent scour are provided.
Additional treatment to meet the 85% TSS removal efficiency is provided.
Access for dean-out and maintenance is provided.
Inlet plunge pool or other energy dissipation is provided.
Forebay is provided to capture sediment and minimize clean-out problems.
Uncompacted natural soils are utilized to promote vegetation and reduce sedimentation.
Seasonal high water table is at least 1 foot below bottom of basin.
If used as a temporary sediment basin, plans indicate clean-out prior to final operation.
A site specific operation and maintenance plan with the following provisions is provided.
The 0&M agreement is signed by the responsible party and notarized.
PER GrM :57; VArZb
seEGOf"C- lV'S 72) 0
41, Nor (? rc / /? LT?? .
Burlington-Alamance Regional Airport
Runway 6-24 extension
Stormwater Management Plan
Calculatlons
1. Size Extended Dry Detention Basin
Basin Drainage Area (Acres) Existing Impervious
Are (Acres) Proposed Impervious
Are (Acres) Total Impervious Area
Acres
1 12.65 0.21 2.39 2.6
2 10.28 0.18 1.16 1.34
3 13.14 0 0.72 0.72
4 7.16 0 0.73 0.73
2. Determine 1" Storm Volume (as required by NCDENR for 85% Total Suspended Solids Removal)
Equations: Shuelers Equation: Rv = .009'1 + 0.05
Volume: Rv'11n'drainage area'(1/12)
Sediment Storage Volume:
Rv = Runoff Volume
I = % Impervious

Basin
% Impervious (1)
Runoff Volume (Rv)
Acre-Feet (AC-FT) Total Required Storage
(Runoff + Sediment) (AC-
FT
1 20.6 0.23 0.25 0.30
2 13.0 0.17 0.14 0.17
3 5.5 0.10 0.11 0.13
4 10.2 0.14 0.08 0.10
3. Determine Orifice Area to Completely Drain Pond In 48hrsHrSecond Conversion-
48hrs - 172,800 Seconds
Equations: Q=C'A-SQRT(2'g'H)
Basin Volume in Acre-Feet
AC-FT
Volume in (CF) Flow Rate (O) in Cubic
Feet/Second CFS
Average Head In (Ft) Area of Orifice In square
feet Diameter In
.In
1 0.30 13,068 0.08 1.8 0.007 1.13
2 0.17 7,405 0.04 1.8 0.004 0.85
3 0.13 5,663 0.03 1.8 0.003 0.75
4 0.10 4,356 0.03 1.8 0.002 0.66
1A),
DWQ Project No. bs- /?/ I
DIVISION OF WATER QUALITY - GRASSED SWALE WORKSHEET
1. PROJECT INFORMATION (please complete the following information):
Project Name: 6y,2I tf4rTy'N--4LAM4,VCE Rt-?ioniac
Contact Person: /G -3 7y^1Phone Number:
Swale ID: T?{ c g BQ?G,yT ¢B?o s/??u?ry
0R.41.,J4*C 3J-/n/
a' / - s&-74(5 /,4
'/o
JN??AY 6-z??XTt n/SrdN
3-S3su
PW, PJ/--t(NG7onl N- 28V0r-
Grass Swale Length - ft. (at least 100 ft. per tributary acre)
Tributary Drainage Area ac. (on-site and off-site drainage to the swale)
Impervious Area . Z ac. (on-site and off-site drainage to the swale)
Max. Velocity from 2 Yr. Storm
Max. Velocity from 10 Yr. Storm
Min. side slopes
Steepest Effective Slope
Cover Crop
II. REQUIRED ITEMS CHECKLIST
e-
fps
fps
ratio
,..OJ 2? ftift
-Tq-L? t=ES c vE?
(2 fps max.)
(3:1 min.)
(check dams may be used)
Kol3E L ESPEb E z4
c"sPec/F,c4777arJ 7--901)
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
Vegetation Plan provided on plans
The underlying soils are permeable and non-compacted F4,4 SrD sPtz?(Fr 4A-77-/C'-/- 2
Swale carries only stormwater flow ?P Y F Nd i a nr' 4 cTZ?,
Water table depth is greater than 1 foot.
Plan details for the swale provided.
Plan details for the inlets and outlets are provided.
Check dams provided.
The operation and maintenance agreement includes annual erosion and vegetation repair, and at least twice
annual mowing.
The operation and maintenance agreement signed and notarized by the responsible party is provided.

DWQ Project No. bS- /'7/
DIVISION OF WATER QUALITY - GRASSED SWALE WORKSHEET
1. PROJECT INFORMATION (please complete the following information):
Project Name: 6u2tW4-7vN-4LAM4AICE 2?-?ioniAc. A1,*012T 1?(l,lt,?/1Y 6-2?{?XTrNS?a?/
Contact Person: Ei? /c S 7-V -1 6--r Phone Number: (9'/0) 76 3 -S3 5-0
Swale ID; Tic g a BQ? aT ¢S?? S/??ticxry
,P 4 4-of 6-2;J. 01
DQ, G?iL?'trv ??N Nc- 'LYV0r-
Grass Swale Le gth 'f 0 l7 ft. (at least 100 ft. per tributary acre)
Tributary Drainage Area ac. (on-site and off-site drainage to the swale)
Impervious Area ! ac. (on-site and off-site drainage to the Swale)
Max. Velocity from 2 Yr. Storm
Max. Velocity from 10 Yr. Storm
Min. side slopes
Steepest Effective Slope
Cover Crop
11. REQUIRED ITEMS CHECKLIST
0 fps
.o? fps
ratio
Wit
7f44r--CS FU-C-,d

(2 fps max.)
(3:1 min.)
(check dams maybe used)
K4f3e- LE5PEbez'4
L" SPec /Ft C A77 a-- T- 9 0 !)
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes .
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project
Vegetation Plan provided on plans
The underlying soils are permeable and non-compacted FAQ STD sG?Fr i?P-ii Z
Swale carries only stormwater flow ?P Y ` ,t/o i a n? 4 cTZZ?
Water table depth is greater than 1 foot
Plan details for the swale provided.
Plan details for the inlets and outlets are provided.
Check dams provided.
The operation and maintenance agreement includes annual erosion and vegetation repair, and at least twice
annual mowing.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
I?
DWQ Project No. 0S- /7/1
DIVISION OF WATER QUALITY - GRASSED SWALE WORKSHEET
1. PROJECT INFORMATION (please complete the following information):
Project Name: F>v,2 c/,f(-TvA -4[-AM4A1CE Rt?io.vsK .a/?P?'?2T ?cdN?/Ay 6-2'?txTrn/s?aN
Contact Person: E/? /C S N^M PIf Phone Number. (qlO) "765-S-35-0
Swale ID: T? c gam- BQ? iT ?8? o Syl y D,Q, G?/ L ?'t ?v G7?N Al- 28 vo r-
D/{A4 /Al AJ.IN
Grass Sw6 a Len ?hE , G `f 7 D ft.
9 (at least 100 ft. per tributary acre)
Tributary Drainage Area ?• ?o - ac. (on-site and off-site drainage to the swale)
Impervious Area ?. S ac. (on-site and off-site drainage to the swale)
Max. Velocity from 2 Yr. Storm
Max. Velocity from 10 Yr. Storm
Min. side slopes
Steepest Effective Slope
Cover Crop
fps
fps
ratio
. '0 QS? ft/ft
7`.4-t c.- FES C vE£
(2 fps max.)
(3:1 min.)
(check dams may be used)
k466- L ESPEb E z,4 \
C"'SPECI f/CAR4", T 90/ )
II. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
Vegetation Plan provided on plans
The underlying soils are permeable and non-compacted FAA srn sGtZ_rFr u}-TieJP-/S_2
Swale carries only stormwater flow _70P Y F Nd i a n ?'?4 c
Water table depth is greater than 1 foot
Plan details for the Swale provided.
Plan details for the inlets and outlets are provided.
Check dams provided.
The operation and maintenance agreement includes annual erosion and vegetation repair, and at least twice
annual mowing.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
DWQ Project No. ds- /?/ I
DIVISION OF WATER QUALITY - GRASSED SWALE WORKSHEET
1. PROJECT INFORMATION (please complete the following information):
Project Name: 6y2L/.??Tvni-?LQ/yJ/+N? 2t-?,onit}cr
1D
A /,Prl rz7_ : RLIAI_ M y 6-L VC XTr NsesN
Contact Person: ?/2/? S7vM/?if Phone Number: (9lo) 763-53517
Swale ID: Tic-/3 BQ? T ?8?? S/?ELt }' D.2, L?ic h/v??N N?
OR?I/N?f7-J!N
Grass Swale Le ^ /,D
9 ft. (at least 100 ft. per tributary acre)
Tributary Drainage Area ac. (on-site and off-site drainage to the swale)
Impervious Area ac. (on-site and off-site drainage to the swale)
Max. Velocity from 2 Yr. Storm
Max. Velocity from 10 Yr. Storm
Min. side slopes
Steepest Effective Slope
Cover Crop
ll. REQUIRED ITEMS CHECKLIST
J, fps
(v fps
3: / ratio
-, DO-?,-r fuft
74-1-.- FfS c vE£
(2 fps max.)
(3:1 min.)
(check dams may be used)
k466- L ESPFb E ZA4
L -'SPEG IFt c An dN 7--90/)
or-
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirementhas not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
Vegetation Plan provided on plans
The underlying soils are permeable and non-compacted f14A STD sGfr? C'-/? z
Swale carries only stormwater flow 5, ` /V0 i a wr'.t cTZC?
Water table depth is greater than 1 foot.
Plan details for the swale provided.
Plan details for the inlets and outlets are provided.
Check dams provided.
The operation and maintenance agreement includes annual erosion and vegetation repair, and at least twice
annual mowing.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
DWQ Project No.
DIVISION OF WATER QUALITY • GRASSED SWALE WORKSHEET
1. PROJECT INFORMATION (please complete the following information):
Project Name: 6va41.11r7vni--4t-AM4A1C6 /Zt7rio,ygc ,di,e?'?rzT-; ???,??Y 6_z?{?,yTrn/s?sA/
Contact Person: !W /C S 7V M 6"> Phone Number: (9'/0) 76 3 - Ss S-U
Swale ID: 2-4-c-43 OC4- 1-1 BQ? rT ¢B? 0 SllEtcxry Die, l-?i i- n rN d;- 7z- ^• Al N e- q-,?
D?I.r}1 n1 ?.?J!n/
Gra Swale L gth LA S fL (at least 100 ft. per tributary acre)
Tributary Drainage Area 3. ac. (on-site and off-site drainage to the swale)
Impervious Area ac. (on-site and off-site drainage to the swale)
Max. Velocity from 2 Yr. Storm
Max. Velocity from 10 Yr. Storm
Min. side slopes
Steepest Effective Slope
Cover Crop
II. REQUIRED ITEMS CHECKLIST
fps
fps
ratio
' o U 72; ft/ft
(2 fps max.)
(3:1 min.)
(check dams may be used)
k466_ L ESPEb E z,4 \
L 'SPe-61F,c A-•77d14 T 9011
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
Vegetation Plan provided on plans
The underlying soils are permeable and non-compacted M4 STD sP rFi chi r-? P-i? 2
Swale carries only stormwater flow ?P V F Nd T a n r'
Water table depth is greater than 1 foot
Plan details for the swale provided.
Plan details for the inlets and outlets are provided.
Check dams provided.
The operation and maintenance agreement includes annual erosion and vegetation repair, and at least twice
annual mowing.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
DWQ Project No. bS- /?/ I
DIVISION OF WATER QUALITY • GRASSED SWALE WORKSHEET
1. PROJECT INFORMATION (please complete the following information):
Project Name: 6v21 /.J(r7vN-4t_,4m4,vc._ Rc-&-ioAlh-c. Ai,Pri27 1?,IAI ?A

G- S C xr-r n?sroN
Contact Person: 4?SW/c STvMPiI Phone Number. (9 0) 763-5735v
Swale ID: 7_4C-136y-T- BQ? iT ?g?? S/??uxY Dom, t??c n,N ??•? N? I-9 VO -
DRr??N?/?'J!n/
Grass Swale L g Z? ?f i7 ft. (at least 100 ft. per tributary acre)
Tributary Drainage Area -? , ac. (on-site and off-site drainage to the swale)
Impervious Area ac. (on-site and off-site drainage to the swale)
Max. Velocity from 2 Yr. Storm
Max. Velocity from 10 Yr. Storm
Min. side slopes
Steepest Effective Slope
Cover Crop
II. REQUIRED ITEMS CHECKLIST
? - 2'5-- fps
'y • V fps
ratio
D 0 ft/ft
7`q-u- rE5 c vE£
(2 fps max.)
(3:1 min.)
(check dams may be used)
KogE L ESPFb E z.4
c1'5PEc1F/cAT7,W T `>'00
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
Vegetation Plan provided on plans
The underlying soils are permeable and non-compacted fAA- STD 5PeZ.(F7 4 -nej P- AS' Z
Swale carries only stormwater flow °P Y Nd i a.?n.f cl??
Water table depth is greater than 1 foot
Plan details for the swale provided.
Plan details for the inlets and outlets are provided.
Check dams provided.
The operation and maintenance agreement includes annual erosion and vegetation repair, and at least twice
annual mowing.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
DWQ Project No. 0S- / 7/ 1 5 A
DIVISION OF WATER QUALITY • GRASSED SWALE WORKSHEET
1. PROJECT INFORMATION (please complete the following information):
Project Name: 6y2Lt.f1-7vN-A-1-AM41VCE /ztTrivNt}t 41,Pj-4/z7-• 1?dn1,,?14 y 6-2'?CxTrn/sr?N
Contact Person: E12lc S NM P1_4r Phone Number: (9/0) ' 76 3 - Ss .sv
Swale ID: T4-c-/36u- *-f 94,6,Y7; ¢B10 _5/r'EUe-y 0,2, c???c hr„ ??..? N? 28Yo,y-
D 1 A-F ZMM4!?N
Grass Swale Lengfh 3A
Tributary Drainage Area
Impervious Area
Max. Velocity from 2 Yr. Storm
Max. Velocity from 10 Yr. Storm
Min. side slopes
Steepest Effective Slope
Cover Crop
REQUIRED ITEMS CHECKLIST
(at least 100 ft per tributary acre)
3 • ac. (on-site and off-site drainage to the swale)
• 31 ac. (on-site and off-site drainage to the swale)
33 fps (2 fps max.)
1- '03 fps
ratio (3:1 min.)
Ora L?? Riff (check dams may be used)
7_44-t- FfSCVEE K4t3E L ESPED E Z.4
SP?c IFS c q?7 a•? T- 9 0 l)
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. if a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
Vegetation Plan provided on plans
The underlying soils are permeable and non-compacted FAA STD sP Fr ? P-?? 2
Swale carries only stormwater flow Nd i a •??'?F c?v?
,Water table depth is greater than 1 foot
details for the swale provided.
details for the inlets and outlets are provided.
Check dams provided.
The operation and maintenance agreement includes annual erosion and vegetation repair, and at least twice
annual mowing.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
DWQ Project No. bS- 1'711
DIVISION OF WATER QUALITY - GRASSED SWALE WORKSHEET
1. PROJECT INFORMATION (please complete the following information):
Project Name: S.,,21 J(r"A,-4tAM4,VCE' ,?1FL-10AIA-t
Contact Person: Phone Number:
Swale ID: Tg BQ?Gt,?T ¢B?e S/?y
DMA/,-,j
!o
3&
dn/L?AY 6-WCxTr A/se4N
3?S35v
Doe, (,?/L?'c/v?7?ni He- 285?0?
Grass Swale Length 1v7 O ft. (at least 100 ft. per tributary acre)
Tributary Drainage Area 57% ac. (on-site and off-site drainage to the swale)
Impervious Area : 3 a ac. (on-site and off-site drainage to the Swale)
Max. Velocity from 2 Yr. Storm
Max. Velocity from 10 Yr. Storm
Min. side slopes
Steepest Effective Slope
Cover Crop
II. REQUIRED ITEMS CHECKLIST
fps
fps
•3? / ratio
us? ZS/tuft
77 -u 7-e5 cvEE
(2 fps max.)
(3:1 min.)
(check dams may be used)
k466- 1-E5PEDEZ4
L" 5pe-c IF, c' R r- T- 9 0 !)
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
Vegetation Plan provided on plans
The underlying soils are permeable and non-compacted F4,4 srD sP fr ? C'-/? z
Swale carries only stormwater flow 7'010 y ` ,vo; CS ." P+C?z:4p
Water table depth is greater than 1 foot.
Plan details for the swale provided.
Plan details for the inlets and outlets are provided.
Check dams provided.
The operation and maintenance agreement includes annual erosion and vegetation repair, and at least twice
annual mowing.
The operation and maintenance agreement signed and notarized by the responsible party is provided.

DWQ Project No. 0S- /?l I ? /`
DIVISION OF WATER QUALITY - GRASSED SWALE WORKSHEET
Contact Person: ,WIC 57yf f'H Phone Number: (lo ) 76 3 - 5-3 Sy
Swale ID: ; i741-136Y-7- BQ?Gt,iTj ¢8/0
41N 46-f- 0Ad 01
p,Q, (? i L .?t v ??? I VC- 28 `f 0.1-
Gra s Swale ength (p( b ft. (at least 100 ft. per tributary acre)
Tributary Drainage Area ac. (on-site and off-site drainage to the swale)
Impervious Area ac. (on-site and off-site drainage to the swale)
Max. Velocity from 2 Yr. Storm
Max. Velocity from 10 Yr. Storm
Min. side slopes
Steepest Effective Slope
Cover Crop
II. REQUIRED ITEMS CHECKLIST
./,3(" fps
fps
ratio
r v v_27? ft/ ft
?`.?u, rE5 C UE?
(2 fps max.)
(3:1 min.)
(check dams may be used)
kcl3E L ESPEb E Z'4
,!?5Pec1ficA7741J 7---901)
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
Vegetation Plan provided on plans
The underlying soils are permeable and non-compacted F4,4 srD sG?rFr ? ?' ?? 2
Swale carries only stormwater flow 7'0P V* Na i a nr' 4
Water table depth is greater than 1 foot
Plan details for the swafe provided.
Plan details for the inlets and outlets are provided.
Check dams provided.
The operation and maintenance agreement includes annual erosion and vegetation repair, and at least twice
annual mowing.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
DWQ Project No. OS-- /?/ t
DIVISION OF WATER QUALITY - GRASSED SWALE WORKSHEET
1. PROJECT INFORMATION (please complete the following information):
Project Name: (6v¢c1.J(r7roN-,4LAM41VCE /??-7,io?yLk
A IK'Ci 2T ; RLlN_M
q6
(o-1V',6?_XTr A/SroAJ
Contact Person: EW IC S7y^16"1' Phone Number: ("1410) X763-Ss Su
Swale ID: 2744g a- B,Q?G?r ¢SiJ S/?EU ?y D.2, r,?i f- h,N C-7 N- 28 Sao
0/1 iN 4ffJ.!N_
Gray Swale Length L/9
ft. (at least 100 ft. per tributary acre)
Tributary Drainage Area ac. (on-site and off-site drainage to the swale)
Impervious Area ac. (on-site and off-site drainage to the Swale)
Max. Velocity from 2 Yr. Storm
Max. Velocity from 10 Yr. Storm
Min. side slopes
Steepest Effective Slope
Cover Crop
II. REQUIRED ITEMS CHECKLIST
fps
fps
ratio
0.0 ??ft/ft
7` -u.-rESCUe d
(2 fps max.)
(3:1 min.)
(check dams may be used)
kogE LE5'P6:-DEZ4
5FE-cIFicA77W ?-901)
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
Vegetation Plan provided on plans
The underlying soils are permeable and non-compacted F4,4 srD sP Fr cM7? ?'-/? Z•
Swale carries only stormwater flow ?P 5° F 'V0 cs nP? c?es?.
Water table depth is greater than 1 foot
Plan details for the swale provided.
Plan details for the inlets and outlets are provided.
Check dams provided.
The operation and maintenance agreement includes annual erosion and vegetation repair, and at least twice
annual mowing.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
Burlington- Alamance Regional Airport
Grassed Swale BMP's
Swale Trib Area Length Slope Percent composite Q-2 Q-10 V-2 V-10
Acres Feet Ft/Ft Impervious c cfs cfs fps fps
1 A 1.05 460 0.0025 25% 0.45 1.1 1.7 1.05 1.16
1 B 0.73 400 0.0025 25% 0.45 0.8 1.2 1.00 1.07
1 C 3.65 470 0.0025 41% 0.55 4.6 7.4 1.51 1.70
1 D 3.37 400 0.0025 42% 0.55 4.3 6.9 1.47 1.67
2A 3.47 580 0.0025 27% 0.46 3.7 5.9 1.42 1.61
2B 2.04 400 0.0025 27% 0.46 2.2 3.5 1.25 1.41
3A 3.40 350 0.0025 9% 0.35 2.8 4.5 1.33 1.50
3B 5.07 670 0.0025 6% 0.34 3.9 6.3 1.45 1.64
4A 3.69 610 0.0025 11% 0.37 3.1 5.0 1.36 1.54
4B 2.75 450 0.0025 9% 0.35 2.2 3.6 1.25 1.41
c (impervious) = 0.9
c (grass) = 0.3
i-2 = 2.3 in/hr
i-10 = 3.7 in/hr
Q=ciA
Velocities from swale rating curve.
Rating Curve for Triangular Channel - 1
Project Description
Friction Method Manning Formula
Solve For Normal Depth
Input Data
Roughness Coefficient
Channel Slope
Left Side Slope
Right Side Slope
Discharge
Rating Curve Plot
1.75
1.7
1.65
1.6
1.55
.. 1.5
1.45
1.4
0 1.35
j 1.3
1.25
1.2
1.15
1.1
1.05
0.030
0.00250 ft/ft
3.00 ft/ft (H:V)
3.00 ft/ft (H:V)
10.00 ft'/s
Worksheet: Triangular Channel - 1
Velocity (ftls) vs Discharge (ft'/s)
1 2 3 4 5
Discharge (ft'/s)
3 r ? ?SO
?
6 7 8
Bentley Systems, Inc. Haestad Methods Solution Center Bentley FlowMaster [08.01.066.001
12/2112006 4:33:30 PM 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA [phone] Page 1 of 1
Project No. DWQ 05-- /7// 41
DIVISION OF WATER QUALITY 8*1A)
401 EXTENDED DRY DETENTION BASIN WORKSHEET
DWQ Stormwater Management Plan Review
At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and
specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance
agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and
approval of the project
PROJECT INFORMATION (please complete the following information):
Project Name: Qv,Qunl67vN-AcA,49A1vCE ?rGioNAL Aiffo27 e?,vwAx 6-2`4 ?XT??vS/onJ
Contact Person: /c 57v," 7 Phone Number. ilv 7 c 3- S s s u
T4 -t3cYZr ,gei?rrr 4?Sio Sfs??t? ?J?, WiL. M /n14,
?TV" nr? z85?o
For projects with multiple basins, specify which basin this worksheet applies to:_ Dre Ai.-JA-&-6- &f-.S1-J f
Drainage Area: acres Percent Impervious Area: - %
Qa
II. REQUIRED ITEMS CHECKLIST 1 X C - -24
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of
Environment, Health and Natural Resources, November 1995) and Administrative Code Section: 15 A NCAC 2H .1008. Initial in the space
provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not
been met, attach an explanation of why.
Applicants Initials
Either capture runoff from 1 yr., 24 hour storm and release over a 48 hour period, or
capture runoff from 1 inch storm and draw down over a period of 2 to 5 days.
Please provide routing for 1 yr. 24 hr. event or volume from 1 inch rain
The basin length to width ratio is greater than 3:1. o , 2 S A c • FT
The basin side slopes are no steeper than 3:1.
A small permanent pool at outlet orifice is provided to reduce clogging. w rrNinl P2EZ? r ,?q,?Ka ?E
M emergency drain to completely empty the basin is provided. ?MUCava.
Vegetation plan prepared is specified on plans.
-Basin to be stabilized within 14 days of construction is specified.
Sediment storage (20% of detention volume) in addition to detention volume is provided.
.Inlet and outlet erosion control measures to prevent scour are provided.
Additional treatment to meet the 85% TSS removal efficiency is provided.
Access for dean-out and maintenance is provided.
Inlet plunge pool or other energy dissipation is provided.
Forebay is provided to capture sediment and minimize clean-out problems.
Uncompacted natural soils are utilized to promote vegetation and reduce sedimentation. PEK 5?1,,/Dk
Seasonal high water table is at least 1 foot below bottom of basin. sPiP?c?47Z v? P S?'
If used as a temporary sediment basin, plans indicate clean-out prior to final operation. A'2` Al
A site specific operation and maintenance plan with the following provisions is provided.
The 0&M agreement is signed by the responsible party and notarized.
Project No. DWQ 05- /7// DIVISION OF WATER QUALITY'
401 EXTENDED DRY DETENTION BASIN WORKSHEET
DWQ Stormwater Management Plan Review
At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and
specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance
agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and
approval of the project
1. PROJECT INFORMATION (please complete the following information):
Project Name : Q 119Z-bV67vIv /-(c A A14NCE Ier Gi o NAL
/- 160a,er, ,P,1,vwAy 6-21K
Frj?n/S?Jn/
Contact Person: f c .3 v'" ?--r Phone Number. (1,10) ? c 3 - s 3 s-u
T4-'-f3tYLT : 6e 161,r; YS/a SHEt-LE?- 0a, Wl -m , aceru" evc 2?`f d
For projects with multiple basins, specify which basin this worksheet applies to:_ D2 a ?a ,S,¢s ?.J -y
Drainage Area: acres Percent Im ervious Area: %
10,7.1? /, Ac_ __ -3l
II. REQUIRED ITEMS CHECKLIST 2X t,1 13 J ?
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of
Environment, Health and Natural Resources, November 1995) and Administrative Code Section: 15 A NCAC 2H .1008. Initial in the space
provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not
been met, attach an explanation of why.
Applicants Initials
Either capture runoff from 1 yr., 24 hour storm and release over a 48 hour period, or
_capture runoff from 1 inch storm and draw down over a period of 2 to 5 days.
Please provide routing for 1 yr. 24 hr. event or volume from 1 inch rain 7
The basin length to width ratio is greater than 3:1. ' Ac ?T
The basin side slopes are no steeper than 3:1. '
_A small permanent pool at outlet orifice is provided to reduce dogging. w r1711tJ Per c+'?r M.41,Wa l.E
An emergency drain to completely empty the basin is provided. 3 M cTua-6.
-Vegetation plan prepared is specified on plans.
-Basin to be stabilized within 14 days of construction is specified.
Sediment storage (20% of detention volume) in addition to detention volume is provided.
-Inlet and outlet erosion control measures to prevent scour are provided.
Additional treatment to meet the 85% TSS removal efficiency is provided.
Access for dean-out and maintenance is provided.
Inlet plunge pool or other energy dissipation is provided.
Forebay is provided to capture sediment and minimize clean-out problems.
Uncompaded natural soils are utilized to promote vegetation and reduce sedimentation. /'CX 11?44 :51-2WVAytb
Seasonal high water table is at least 1 foot below bottom of basin. s/'EGiP???LV--? -/Do
.If used as a temporary sediment basin, plans indicate clean-out prior to final operation. 4_yc? tia'
A site specific operation and maintenance plan with the following provisions is provided.
The 0&M agreement is signed by the responsible party and notarized.
Project No. DWQ 0$- /7// / . l ?3
DIVISION OF WATER QUALITY bm l N
401 EXTENDED DRY DETENTION BASIN WORKSHEET
DWQ Stormwater Management Plan Review
At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and
specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance
agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and
approval of the project
PROJECT INFORMATION (please complete the following information):
Project Name : t3 vR?/.?U?N - /-) c d .?aNCE ?EGio n/AL d/,PPd 1,L7-

Contact Person: -? I C STv Phone Number. 7 c 3 - s s m
7-4-i-8t-ar / 8,etc-,r YS1d 57-s,5LLCY oa, wl, ln/c-rvr?
Nc
For projects with multiple basins, specify which basin this worksheet applies to:_
Drainage Area: acres Percent Impervious Area: %
A-- -411
II. REQUIRED ITEMS CHECKLIST XC- a
z-8Vo
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of
Environment, Health and Natural Resources, November 1995) and Administrative Code Section: 15 A NCAC 2H .1008. Initial in the space
provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not
been met, attach an explanation of why.
Applicants Initials
Either capture runoff from 1 yr., 24 hour storm and release over a 48 hour period, or
capture runoff from 1 inch storm and draw down over a period of 2 to 5 days. ,,
Please provide routing for 1 yr. 24 hr. event or volume from 1 inch rain /V
The basin length to width ratio is greater than 3:1. o • P Ac • FT
The basin side slopes are no steeper than 3:1.
A small permanent pool at outlet orifice is provided to reduce dogging. w urn/ PP?'c4-%r- ,-r 040 fC
An emergency drain to completely empty the basin is provided. s m o c-rua-6 .
Vegetation plan prepared is specified on plans.
-Basin to be stabilized within 14 days of construction is specified.
Sediment storage (20% of detention volume) in addition to detention volume is provided.
Inlet and outlet erosion control measures to prevent scour are provided.
Additional treatment to meet the 85% TSS removal efficiency is provided.
Access for dean-out and maintenance is provided.
Inlet plunge pool or other energy dissipation is provided.
Forebay is provided to capture sediment and minimize clean-out problems.
Uncompaded natural soils are utilized to promote vegetation and reduce sedimentation.
Seasonal high water table is at least 1 foot below bottom of basin.
.If used as a temporary sediment basin, plans indicate clean-out prior to final operation.
A site specific operation and maintenance plan with the following provisions is provided.
The 0&M agreement is signed by the responsible party and notarized.
Fx??vS?on/
,I,vwAr 6-2 1tl
PER G?t-A STJI,a/Dif?
sPEG/G/?4?Zn-3 ? P S?'?
Project No. DWQ 05- /7//
DIVISION OF WATER QUALITY
401 EXTENDED DRY DETENTION BASIN WORKSHEET
DWQ Stormwater Management Plan Review:
At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and
specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance
agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and
approval of the project
PROJECT INFORMATION (please complete the following information):
Project Name: 8UhP1-1W67-V1%1 -AcA.t14nlcE oNAL Adfa2T.
Contact Person: -K 57v?-+ /?f+ Phone Number. 7 c 3 s s s-o
7_4`f3cYLT/ r°Q/CrNr YBId SHELLer 0a, 1.1/1-mla c_TvN evc 28./J?
For projects with multiple basins, specify which basin this worksheet applies to::
Drainage Area:. acres Percent Impervious Area: %
?j A? C_ ` l
II. REQUIRED ITEMS CHECKLIST 7,1,6 hC_
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of
Environment, Health and Natural Resources, November 1995) and Administrative Code Section: 15 A NCAC 2H .1008. Initial in the space
provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not
been met, attach an explanation of why.
Applicants Initials
Either capture runoff from 1 yr., 24 hour storm and release over a 48 hour period, or
capture runoff from 1 inch storm and draw down over a period of 2 to 5 days. f ?,,
Please provide routing for 1 yr. 24 hr. event or volume from 1 inch rain :>
The basin length to width ratio is greater than o • 0 $ AG • Fr
The basin side slopes are no steeper than 3:1.
A small permanent pool at outlet orifice is provided to reduce clogging. wrr7/in/ 1e6_C4-%r- 144AI a -C
An emergency drain to completely empty the basin is provided. s to u C_rv/Z_6,
Vegetation plan prepared is specified on plans.
Basin to be stabilized within 14 days of construction is specified.
-Sediment storage (20% of detention volume) in addition to detention volume is provided.
Inlet and outlet erosion control measures to prevent scour are provided.
Additional treatment to meet the 85% TSS removal efficiency is provided.
Access for clean-out and maintenance is provided.
Inlet plunge pool or other energy dissipation is provided.
Forebay is provided to capture sediment and minimize clean-out problems.
Uncompacted natural soils are utilized to promote vegetation and reduce sedimentation.
Seasonal high water table is at least 1 foot below bottom of basin.
If used as a temporary sediment basin, plans indicate clean-out prior to final operation.
A site specific operation and maintenance plan with the following provisions is provided.
The 0&M agreement is signed by the responsible party and notarized.
,lvWAy 6-Z1K
?,rj?7VS/J/`I

Burlington-Alamance Regional Airport
Runway 6-24 extension
Stormwater Management Plan
Calculations
1. Size Extended Dry Detention Basin
Basin Drainage Area (Acres) Existing Impervious
Are (Acres) Proposed Impervious
Are (Acres) Total Impervious Area
Acres
1 12.65 0.21 2.39 2.6
2 10.28 0.18 1.16 1.34
3 13.14 0 0.72 012
4 7.16 0 0.73 0.73
2. Determine 1" Storm Volume (as required by NCDENR for 85% Total Suspended Solids Removal)
Equations: Shueler's Equation: Rv = .009'1 + 0.05
Volume: Rv'11n'drain3ge area'(1/12)
Sediment Storage Volume:
Rv = Runoff Volume
I = % Impervious

Basin
% impervious (1)
Runoff Volume (Rv)
Acre-Feet (AC-FT) Total Required Storage
(Runoff + Sediment) (AC-
FT)
1 20.6 0.23 0.25 0.30
2 13.0 0.17 0.14 0.17
3 5.5 0.10 0.11 0.13
4 10.2 0.14 0.08 0.10
3. Determine Orifice Area to Completely Drain Pond In 48hrs
Hr-Second Conversion-
48hrs - 172,800 Seconds
Equations: Q=C'A'SQRT(2'g'H)

Basin Volume in Acre-Feet
AC-FT
Volume In (CF) Flow Rate (Q) in Cubic
Feet/Second CFS
Average Head In (Ft) Area of Orifice In square
feet Diameter in
.In
1 0.30 13,068 0.08 1.8 0.007 1.13
2 0.17 7,405 0.04 1.8 0.004 0.85
3 0.13 5,663 0.03 1.8 0.003 0.75
4 0.10 4,356 0.03 1.8 - 0.002 0.66
114,
DWQ Project No. b-s- /?/ I
DIVISION OF WATER QUALITY - GRASSED SWALE WORKSHEET
1. PROJECT INFORMATION (please complete the following information):
Project Name: 6vQL/.J(r7vN-?(fjNl?{N? R?-?ioniAc
,4 r,,er4 27-
dAI-MY 6-Z`16XrtA/SroN
Contact Person: 4557/2 /c :57V-16-4r Phone Number: (q/o) , 176 3 -SS Sv
Swale ID: Tf¢Cl3 T BQ/yyT ¢B?o S/?EZC?ry D?2? W/L/'t/N6?n/ Al- 22voy-
14
Grass Swale Length
4 ?; ft. (at least 100 ft. per tributary acre)
Tributary Drainage Area 1.0 ac. (on-site and off-site drainage to the swale)
Impervious Area -= ? Z ac. (on-site and off-site drainage to the swale)
Max. Velocity from 2 Yr. Storm
Max. Velocity from 10 Yr. Storm
Min. side slopes
Steepest Effective Slope
Cover Crop
II. REQUIRED ITEMS CHECKLIST
fps
fps
ratio
„OJ 'L'am ft/ft
7-4-u- DES vE£

(2 fps max.)
(3:1 min.)
(check dams may be used)
kot3E 4E5PED6-z4
?5p -c1FtcA-77a1J T 90?)
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirement has not been met, attach an explanation of why. At a minimum, a complete stomwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
Vegetation Plan provided on plans
The underlying soils are permeable and non-compacted f/4,4
Swale carries only stormwater flow i a K?'
Water table depth is greater than 1 foot
Plan details for the swale provided.
Plan details for the inlets and outlets are provided.
Check dams provided.
The operation and maintenance agreement includes annual erosion and vegetation repair, and at least twice
annual mowing.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
DWQ Project No. OS--1711
DIVISION OF WATER QUALITY • GRASSED SWALE WORKSHEET
1. PROJECT INFORMATION (please complete the following information):
Project Name: 6uQ11nr(r7-v V -,4LAvv4A1CE
(6
6-n-LlCXTr NS,14N
Contact Person: 45W IC STvMWr Phone Number. (9'l0) 763-53sv
Swale ID:
?6141,v4-o-C 4J-61V
PW, Al-r- '4V03-
Grass Swale Le gth -f 0 ft. (at least 100 ft. per tributary acre)
Tributary Drainage Area ac. (on-site and off-site drainage to the swale)
Impervious Area / ac. (on-site and off-site drainage to the Swale)
Max. Velocity from 2 Yr. Storm
Max. Velocity from 10 Yr. Storm
Min. side slopes
Steepest Effective Slope
Cover Crop
II. REQUIRED ITEMS CHECKLIST
(' 0 C) fps
1,.0-7 fps
ratio
J J Z ?/ fUft
7`4-x- (--c S C UC

(2 fps max.)
(3:1 min.)
(check dams maybe used)
K4ASC L ESPEb E Zs4
L"SPc--c1f/CAT7drJ T 90! 1
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes .
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project
Vegetation Plan provided on plans
The underlying soils are permeable and non-compacted FAA STU sPFi? ?? 2
Swale carries only stormwater flow 7'OP Y ` ,va i a
,Water table depth is greater than 1 foot.
Plan details for the Swale provided.
Plan details for the inlets and outlets are provided.
Check dams provided.
The operation and maintenance agreement includes annual erosion and vegetation repair, and at least twice
annual mowing.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
DWQ Project No. 0S- /'_7/ I
DIVISION OF WATER QUALITY - GRASSED SWALE WORKSHEET
1. PROJECT INFORMATION (please complete the following information):
Project Name: 6y2L/n!(rTy -4LAM4,VCf ,P??,onigt
Contact Person; ,?5_/Q /G S 7V M 6"f ' Phone Number:
Swale ID: Tg BQ?Gt,?T ¢8?? Sy?u?y
6) /N4 iN
'r!/
JN "M Y 6- 2'? t XTr NSroN
/o) -763-53.So

Grass Sw a Length ?-f t u ft. (at least 100 ft. per tributary acre)
Tributary Drainage Area Ev ac. (on-site and off-site drainage to the swale)
Impervious Area .?. S ac. (on-site and off-site drainage to the swale)
Max. Velocity from 2 Yr. Storm
Max. Velocity from 10 Yr. Storm
Min. side slopes
Steepest Effective Slope
Cover Crop
II. REQUIRED ITEMS CHECKLIST
-?? fps
fps
ratio
..0 v_ 21 fUft
7`4u-rE5 FU-C-££
(2 fps max.)
(3:1 min.)
(check dams may be used)
ko(sE 1_E5PFbEZ,4
LSPEG/F/Gq-T7dN *;-901)
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
Vegetation Plan provided on plans
The underlying soils are permeable and non-compacted FAA- STD sGruFi?M7?? ?? z
Swale carries only stormwater flow 7°t° 5,* .va i a nr'?4
Water table depth is greater than 1 foot
Plan details for the swale provided.
Plan details for the inlets and outlets are provided.
Check dams provided.
The operation and maintenance agreement includes annual erosion and vegetation repair, and at least twice
annual mowing.
The operation and maintenance agreement signed and notarized by the responsible party is provided.

DWQ Project No. bS- /7/ f
1. PROJECT INFORMATION (please complete the following information):
Project Name : 6 u Q L /.J G 7y N - L 4 w/ /f NCE 2 c-7,-i o A1 -c. Rclni u'M y 6-1 `{ C xrr n/s?,SA/
DIVISION OF WATER QUALITY - GRASSED SWALE WORKSHEET
Contact Person: E/2 /G S 7V^4 Phone Number: (9/0) `763 - Ss SU
Swale ID: mild/N T?c-g BQ??,fir ¢Bi0 S?? y OW, 1,J C-7---^J ,vr 28Yo.r-
Gr s SwalLength ^ t?
ft. (at least 100 ft. per tributary acre)
Tributary Drainage Area ac. (on-site and off-site drainage to the swale)
Impervious Area ac. (on-site and off-site drainage to the swale)
Max. Velocity from 2 Yr. Storm
Max. Velocity from 10 Yr. Storm
Min. side slopes
J. Y fps
(v fps
3- / ratio
(2 fps max.)
(3:1 min.)
Steepest Effective Slope
Cover Crop
II. REQUIRED ITEMS CHECKLIST
-, 00-1"r ft/ft
-T,q-lam rES C vE£
(check dams may be used)
Kol3E L ESPED E z,q
L$?EG/f/CL?J"Jdr/
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project
J Vegetation Plan provided on plans
The underlying soils are permeable and non-compacted FAA- SrD sP rFrri? P i? z
Swale carries only stormwater flow 7aP y ,vo; 6 nP
Water table depth is greater than 1 foot.
Plan details for the swale provided.
Plan details for the inlets and outlets are provided.
Check dams provided.
The operation and maintenance agreement includes annual erosion and vegetation repair, and at least twice
annual mowing.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
DWQ Project No. b.S- /7/ I
DIVISION OF WATER QUALITY • GRASSED SWALE WORKSHEET
1. PROJECT INFORMATION (please complete the following information):
Project Name: 0,vaI(,ft-7y--.4 L/;M4,yCC RF-610A/4-c_
,d iz7-
1?
6-Z?CXTt NS?aN
Contact Person: Ei? /c '57VM i/ Phone Number ( 0) '763-5-3 S-U
Swale ID: TIC 3 9Q16,yT ¢Bi? Sll?c?y D?2, ????n,N?7n..• 'V? 28yo?
Grass Swafe Length - ?? S ft. (at least 100 ft. per tributary acre)
Tributary Drainage Area 3 ac. (on-site and off-site drainage to the swale)
Impervious Area a `I< ac. (on-site and off-site drainage to the swale)
Max. Velocity from 2 Yr. Storm
Max. Velocity from 10 Yr. Storm
Min. side slopes
Steepest Effective Slope
Cover Crop
II. REQUIRED ITEMS CHECKLIST
4 L{2 fps
-. Ti fps
ratio
-.•O(jZ?? ft/ft
(2 fps max.)
(3:1 min.)
(check dams may be used)
KogE L ESPED E z,e? \
1'Spe-c/f/cArT74,j T 9o/J
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
Vegetation Plan provided on plans
The underlying soils are permeable and non-compacted F4,4 STD 5PeZ4f7 zA-77,-/C'-/-S Z
Swale carries only stormwater flow 710 5° ° vnT a n? 4 c
Water table depth is greater than 1 foot
Plan details for the swale provided.
Plan details for the inlets and outlets are provided.
Check dams provided.
The operation and maintenance agreement includes annual erosion and vegetation repair, and at least twice
annual mowing.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
DWQ Project No. b.S- /7/ I
DIVISION OF WATER QUALITY • GRASSED SWALE WORKSHEET
1. PROJECT INFORMATION (please complete the following information):
Project Name: 6u2L/.J (r7yN-!?L/?Yv1/?NCE /??-z:?onigc
Contact Person: Erg /c S Ty'N d'e''/ Phone Number.
Swale ID: 7_4-c,136ya- BQ/T
Va

d,N-M y 6-1 CXTr /?SroN
9-S3S -0
Poe, G?/ t ?'t /v GIN He- 28 5/0,3'
Grass Swale Leng if v Lo/ ft. (at least 100 ft. per tributary acre)
Tributary Drainage Area 2 , o ac. (on-site and off-site drainage to the swale)
Impervious Area ac. (on-site and off-site drainage to the swale)
Max. Velocity from 2 Yr. Storm
Max. Velocity from 10 Yr. Storm
Min. side slopes
Steepest Effective Slope
Cover Crop
II. REQUIRED ITEMS CHECKLIST
I' 2'.1r- fps
_ '/ • fps
ratio
O 210T tt
7-4 1- _ FES FU-6
(2 fps max.)
(3:1 min.)
(check dams may be used)
Kol3E L ESPED E Z.4
(!?5Pe-Clf/CA'77W 7-90/)
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project
Vegetation Plan provided on plans
The underlying soils are permeable and non-compacted f14,4 51-D
sG Ft ?M7? C'-?? 2
Swale carries only stormwater flow
Water table depth is greater than 1 foot
Plan details for the swale provided.
Plan details for the inlets and outlets are provided.
Check dams provided.
The operation and maintenance agreement includes annual erosion and vegetation repair, and at least twice
annual mowing.
The operation and maintenance agreement signed and notarized by the responsible party is provided.

DWQ Project No. OS-- Ir7/ I
1. PROJECT INFORMATION (please complete the following information):
Project Name: (?vQci.J?7roN-/?L,gw1?NGE RF&-,'OAJA-c.
DIVISION OF WATER QUALITY • GRASSED SWALE WORKSHEET
Contact Person: Ep is S;rv y Pif Phone Number: (`//0) ' 76 9 - S3 SZ7
Swale ID: 2-4-c-g0ea- B4?iT ?8/J SyEUcry D?2, c??c h,N ??,•? N? 285?0?
Gras Swale Lgfh- " 3A ft. (at least 100 ft. per tributary acre)
Tributary Drainage Area 3 • W D ac. (on-site and off-site drainage to the swale)
Impervious Area • 3 I ac. (on-site and off-site drainage to the swale)
Max. Velocity from 2 Yr. Storm
Max. Velocity from 10 Yr. Storm
Min. side slopes
Steepest Effective Slope
Cover Crop
II. REQUIRED ITEMS CHECKLIST
x.33 fps
I fps
V ratio
-Or3 Z5--- ft/ft
7`4-1er- Fe-Sc vE1d
3A
1?11AII?A y 6-2 L1C xTr A/se'sA/
(2 fps max.)
(3:1 min.)
(check dams may be used)
KotSE L ESPED E Z,4
?Sp?clF?cgq-7a? T-9ol)
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirementhas not been met, attach an explanation of why. At a minimum, a complete stonnwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project
Vegetation Plan provided on plans
Tha underlying soils are permeable and non-compacted FAQ STD sPFr? P-?? 2
Swale carries only stormwater flow -Z-0P 5/ 11 'Vo,- a..o
Water table depth is greater than 1 foot
Plan details for the swale provided.
Plan details for the inlets and outlets are provided.
Check dams provided.
The operation and maintenance agreement includes annual erosion and vegetation repair, and at least twice
annual mowing.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
DWQ Project No. bS- /?/
DIVISION OF WATER QUALITY - GRASSED SWALE WORKSHEET
1. PROJECT INFORMATION (please complete the following information):
Project Name: 6v21/-1(r7v -4LAM4A1CE R?-?,?ni??t ,AbPC4iz7-
Contact Person: 6_1q /C STV ^1 Pf7 Phone Number.
Swale ID: T?{ c l3 BQ?Gt?T ¢g?o Sl??uc?}•
D2.?iN___7_
'/o
3&.
dN'-,114y 6-1q6?_x1-r-A1S('4N
3-53s-u
pot, l.??L.k?vG7onr NL 74VOs-
Grass Swale Length -I* t b ft. (at least 100 ft. per tributary acre)
Tributary Drainage Area fi-• 0 ac. (on-site and off-site drainage to the swale)
Impervious Area : 3 a ac. (on-site and off-site drainage to the Swale)
Max. Velocity from 2 Yr. Storm
Max. Velocity from 10 Yr. Storm
Min. side slopes
Steepest Effective Slope
Cover Crop
II. REQUIRED ITEMS CHECKLIST
fps
fps
ratio
_ ,; use yS/ft/ft
u-r-EsCUe£
(2 fps max.)
(3:1 min.)
(check dams may be used)
k466_ L ESPEb E Z,q
c-'SPe-clficA77W 7--901)
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirementhas not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project
Vegetation Plan provided on plans
The underlying soils are permeable and non-compacted FAA- sTD sG rFi u}?i? P ?? 2
Swale carries only stormwater flow 7aP V F Na i a," P+tTtip
Water table depth is greater than 1 foot
Plan details for the swale provided.
Plan details for the inlets and outlets are provided.
Check dams provided.
The operation and maintenance agreement includes annual erosion and vegetation repair, and at least twice
annual mowing.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
DWQ Project No.___bs-
DIVISION OF WATER QUALITY • GRASSED SWALE WORKSHEET
1. PROJECT INFORMATION (please complete the following information):
Project Name: 6v2L?^?(rT N-{?L/1N1/}N? R??ioniAt
Contact Person: f 7V M -f Phone Number:
Swale ID: T?C-3 -1 BQ?GtiT ¢B?o S/?EUt?•
N ii?J e C{
'!o

?n/?/Ay 6-?-?C,t-Tr n/s???/
3 - S3 .SZ7
Ae, Me- 28 `f o,?
Gras Swale ength _e( b f. (at least 100 ft. per tributary acre)
Tributary Drainage Area ac. (on-site and off-site drainage to the swale)
Impervious Area ac. (on-site and off-site drainage to the swale)
Max. Velocity from 2 Yr. Storm
Max. Velocity from 10 Yr. Storm
Min. side slopes
Steepest Effective Slope
Cover Crop
11. REQUIRED ITEMS CHECKLIST
/,3("
fps
' ?.. TIL-r fps
ratio
r a fuft
-T- Fes? yE£

(2 fps max.)
(3:1 min.)
(check dams may be used)
kogE LE57PEDEZ,4
4?_7,';Pf-c1ficAT7a•J ?-901)
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. if a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
Vegetation Plan provided on plans
The underlying soils are permeable and non-compacted f4,4 sTD sO Fr n?C'-?? 2
Swale carries only stormwater flow ?P y F ,vo,- a n?,E cTta?
Water table depth is greater than 1 foot
Plan details for the swale provided.
Plan details for the inlets and outlets are provided.
Check dams provided.
The operation and maintenance agreement includes annual erosion and vegetation repair, and at least twice
annual mowing.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
A reel'r 27- .
DWQ Project No. bS- /r7/ I ?&
DIVISION OF WATER QUALITY • GRASSED SWALE WORKSHEET
1. PROJECT INFORMATION (please complete the following information):
Project Name: (?„¢L/.J (r7vN-?L?QIv1/aN? R??io.vAc A/?P?'?27 2L/,/,?Ay 6-2?CxTrn/si?N
Contact Person: E/2 /? S NM /'i/ Phone Number. I9lo) 76 3 - 53 5-0
Swale ID: Ts4c /3 QQ/fir ¢Si? S/lEUx'Y ?Q, (J/?.?,v??,? nip 28Yor-
Gras Swale Lengtth , y ft. (at least 100 ft. per tributary acre)
Tributary Drainage Area ac. (on-site and off-site drainage to the swale)
Impervious Area , y?; ac. (on-site and off-site drainage to the swale)
Max. Velocity from 2 Yr. Storm
Max. Velocity from 10 Yr. Storm
Min. side slopes
Steepest Effective Slope
Cover Crop
II. REQUIRED ITEMS CHECKLIST
t, a, fps
fps
/ratio
O-0 Zs tt/ft
7`4-u-[=ES?vE£
(2 fps max.)
(3:1 min.)
(check dams may be used)
Ko'3E L E5PEb 6- z4
61'5pe-clficA77W 7--901)
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
Vegetation Plan provided on plans
The underlying soils are permeable and non-compacted F4,4 STD sPrzrFi ? C'-/? 2
Swale carries only stormwater flow 70P V F Na 7_ a .?
Water table depth is greater than 1 foot
Plan details for the swale provided.
Plan details for the inlets and outlets are provided.
Check dams provided.
The operation and maintenance agreement includes annual erosion and vegetation repair, and at least twice
annual mowing.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
Burlington- Alamance Regional Airport
Grassed Swale BMP's
Swale Trib Area Length Slope Percent composite Q-2 Q-10 V-2 V-10
Acres Feet Ft/Ft Impervious c cfs cfs fps fps
1 A 1.05 460 0.0025 25% 0.45 1.1 1.7 1.05 1.16
1 B 0.73 400 0.0025 25% 0.45 0.8 1.2 1.00 1.07
1 C 3.65 470 0.0025 41% 0.55 4.6 7.4 1.51 1.70
1 D 3.37 400 0.0025 42% 0.55 4.3 6.9 1847 1.67
2A 3.47 580 0.0025 27% 0.46 3.7 5.9 1.42 1.61
2B 2.04 400 0.0025 27% 0.46 2.2 3.5 1.25 1.41
3A 3.40 350 0.0025 9% 0.35 2.8 4.5 1.33 1.50
3B 5.07 670 0.0025 6% 0.34 3.9 6.3 1.45 1.64
4A 3.69 610 0.0025 11 % 0.37 3.1 5.0 1.36 1.54
4B 2.75 450 0.0025 9% 0.35 2.2 3.6 1.25 1.41
c (impervious) = 0.9
c (grass) = 0.3
i-2 = 2.3 in/hr
i-10 = 3.7 in/hr
Q=ciA
Velocities from swale rating curve.
Rating Curve for Triangular Channel - I
Project Description
Friction Method Manning Formula
Solve For Normal Depth
Input Data
Roughness Coefficient
Channel Slope
Left Side Slope
Right Side Slope
Discharge
Rating Curve Plot
1.75
1.7
1.65
1.6
1.55
y 1.5
S1.45
1.4
0 1.35
j 1.3
1.25
1.2
1.15
1.1
1.05
,j
6 7 8
0.030
0.00250 ft/ft
3.00 ft/ft (H:V)
3.00 ft/ft (H:V)
10.00 ft3/s
Worksheet: Triangular Channel -1
Velocity (ftfs) vs Discharge (ft'Is)
1 2 3 4 5
Discharge (ft'Js)
Bentley Systems, Inc. Haestad Methods Solution Center Bentley FlowMaster 108.01.066.00]
12/21/2006 4:33:30 PM 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA +1-203.755-1666 Page 1 of 1
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DRAINAGE BASIN 1
AREA: 12.65 ACRE
IMPERVIOUS: 2.6 ACRE
1,800 LF GRASSED SWALE
/ I
IBU ARY TO
(S EAM
N
Orn N
- — SWALE 1A W 41
TAXIWAY EXTENSION/
SWALE 1C� C -II RSA
WATER QUALITY TREATMENT SWALE "'
t _
P L Cl#tlT
a
f .
--------------
RUNWAY 24 EXTENSION
■
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PR01?OSED D Y DETENTION BASIN #3
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MPER A --
GRASSED SW ♦��♦ PROPOSED DIVERSION S �`
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... ♦♦ cr
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E STING 57
■ ❑CA 3FR
■ A\ITC-1;I
■I -1
■ --- 560
■I I 6
■ vim✓
IVER ON WALE
LEGEND
PROPOSED 27' SPAN
STEEL ARCH CULVERT
PROPOSED EXTENDED DRY DETENTION
BASIN (BMP)
PROPOSED GRASS FILTER STRIP
(BMP)
PROPOSED CHECK DAM
/
L' t; 2 7 2006
<; lANUS AND STff"V-X'ER BRAMCIII
F -z
af Q
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W
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X
F W Q
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Project No.
2101-0602
Sht t No.
1
PROPOSED DIVERSION SWALE
.■..
DRAINAGE BASIN LIMITS
WATER TREATMENT SWALE (BMP)
KK
DRAINAGE CHANNEL
0
PROPOSED BUILT UPON AREA
PROPOSED INLET AND DRAINAGE PIPE
— - - —
AIRPORT PROPERTY LINE
®
EXISTING BUILT UPON AREA
E STING 57
■ ❑CA 3FR
■ A\ITC-1;I
■I -1
■ --- 560
■I I 6
■ vim✓
IVER ON WALE
LEGEND
PROPOSED 27' SPAN
STEEL ARCH CULVERT
PROPOSED EXTENDED DRY DETENTION
BASIN (BMP)
PROPOSED GRASS FILTER STRIP
(BMP)
PROPOSED CHECK DAM
/
L' t; 2 7 2006
<; lANUS AND STff"V-X'ER BRAMCIII
F -z
af Q
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W
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U ~ W
X
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clf Z oz N <
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024169
-RUWST 2006
1'-200•
Dr -
SPE
Ch..k.d
EMS
Project No.
2101-0602
Sht t No.
1