OUTFALL CHARACTERIZATION CHART - … CHARACTERIZATION CHART Page 1 of 21 Updated January 2016....

Outfall

NumberDrainage Area Description

Runoff

Coefficient

Outfalls highlighted white discharge storm water not associated with

industrial activity

Outfalls highlighted yellow discharge storm water associated with

industrial activity

Outfalls highlighted pink indicate individually permitted outfalls

93

Outfall 93 supports drainage from DPS Station 6 (711 Regent Blvd.)

Storm water structural controls associated with this outfall include one

storm water treatment device. This outfall drains into an unlined ditch that

discharges to Cottonwood Creek.

0.70

11

Outfall 11 Outfall 11 supports drainage from curb inlets off Nash Street,

S. Main Street, Municipal Way, and Dallas Road in Grapevine, Texas.

Outfall 11 drains into an unlined ditch into Cottonwood Creek.

0.70

001

Outfall 001 is an individually permitted outfall covered under DFW

Airport's Individual Wastewater Permit No. 01441. This outfall

discharges treated storm water meeting effluent limitations into Bear

Creek.

14a

Outfall 14a drains the central portion of runway 13R and 31L, the Verizon

Place Office Campus and the Allied Aviation Bulk Fuel Storage facility.

Activities include aircraft taxi, takeoff and landings, loading/unloading

operations, light vehicle maintenance, and bulk fuel storage. Storm

water structural controls associated with this outfall include one fuel

separator associated with Allied Aviation Bulk Fuel Storage facility. This

outfall drains into a tributary of Big Bear Creek, which flows into Bear

Creek.

0.95/0.80

14b

Outfall 14b drains the central portion of runway 13R and 31L, a small

portion of the West Cargo ramp area, and warehouse facilities along W.

Airfield Drive. Activities include aircraft taxi, takeoff and landings,

loading/unloading operations, and light vehicle/aircraft maintenance.

Storm water structural controls associated with this outfall include two

fuel separator associated with former Emery Air Freight facility, one fuel

separator associated with Kitty Hawk and Caris aircraft hangars, and

Type D storm water inlets supporting the West Cargo ramp. This outfall

drains into a tributary of Big Bear Creek, which flows into Bear Creek.

0.95/0.80

OUTFALL CHARACTERIZATION CHART

of 21 Updated January 2016

Outfall


Runoff

Coefficient


industrial activity


industrial activity



19

Outfall 19 drains large portions of runways 36L and 36R, associated

taxiways, the public parking side of Terminal B, the southern ramp area

of Terminal B, the entire Terminal D ramp, and the express parking area.

Activities conducted in this drainage area include aircraft taxi, takeoff and

landings, aircraft/runway deicing, aircraft/vehicle fueling, aircraft/vehicle

parking, and ground support equipment operation, light aircraft/vehicle

maintenance. Storm water structural controls associated with this outfall

include storm water valve systems associated with deicing activities on

the SW Hold Pad, Terminal D, and Whiskey Kilo. In addition, five fuel

separators and Type D storm water inlets are associated with the SW

Hold Pad, the General Aviation facility, and Terminal B; and two storm

water retention tanks support with the Terminal D ramp. This outfall


0.95/0.80

19a

Outfall 19a drains the public portions of Terminal D. Activities conducted

in this drainage area include vehicle parking and loading/unloading

operations. This outfall is located in a tributary of Big Bear Creek, which

flows into Bear Creek.

0.95

019

Outfall 019 is authorized under DFW Airport's Individual Wastewater

Permit No. 01441. This outfall authorizes discharges from all upstream

outfalls (including outfalls 19 and 19a). Outfall 019 drains into a tributary

of Big Bear Creek, which flows into Bear Creek.


Outfall


Runoff

Coefficient


industrial activity


industrial activity



25

Outfall 25 drains the southeast portion of runway 31L and the eastern

portion of the west cargo area, which includes the aircraft hangars and

warehouse facilities. Activities include aircraft taxi, takeoff and landings,

vehicle and aircraft parking, ground support equipment operation, both

vehicle and aircraft loading/unloading operations, fueling activities,

aircraft and GSE maintenance. Storm water structural controls

associated with this outfall include seven fuel separators, Type D storm

water inlets, and Type B-1 storm water inlets supporting the West Cargo

ramp areas. This outfall drains into a tributary of Big Bear Creek, which

flows into Bear Creek.

0.80

44

Outfall 44 supports drainage from rampside operations from Kitty Hawk

(1515 W. 20th Street.), Caris (1481 W. 20th St.), and curb inlets along

portions of W. Airfield Drive. Outfall 44 drains into an unlined ditch, which

then flows into Outfall 14b and Bear Creek.

0.95

46

Outfall 46 drains sheet flow from undeveloped areas north of S. Airfield

Drive. This outfall drains into a tributary of Big Bear Creek, which flows

into Bear Creek.

0.22

47

Outfall 47 drains a small section of airfield operations area south of

runway 36R. Activities include aircraft taxi, takeoff and landings. This


Creek.

0.95

48

Outfall 48 drains the west portion of the United States Postal Service mail

facility. Activities are limited to vehicle/equipment storage, and

loading/unloading operations. Storm water structural controls associated

with this outfall include one fuel separator supporting the US Postal

Service equipment staging area. This outfall drains into a tributary of Big

Bear Creek, which flows into Bear Creek.

0.95


Outfall


Runoff

Coefficient


industrial activity


industrial activity



50

Outfall 50 drains mostly sheet flow from the southwest portion of runway

36L. Activities are limited to aircraft taxi, takeoff, and landings. This


Creek.

0.95

51

Outfall 51 drains aircraft taxiways areas. Activities are limited to aircraft

taxi. This outfall drains into a tributary of Big Bear Creek, which flows

into Bear Creek.

0.95

52

Outfall 52 drains undeveloped areas south of 27th Street and portions of

DPS Station 4. Activities are limited to vehicle parking. This outfall


0.70

53

Outfall 53 drains the southeast portion of runway 31L. Activities are

limited to aircraft takeoff and landings. This outfall drains into a tributary


0.95

54

Outfall 54 drains the southeast portion of runway 31L. Activities are



0.95

55

Outfall 55 drains the central portion of runway 13R and 31L. Activities

are limited to aircraft takeoff and landings. This outfall drains into a

tributary of Big Bear Creek, which flows into Bear Creek.

0.95

56

Outfall 56 drains the northwest portion of runway 13R. Activities are



0.95


Outfall


Runoff

Coefficient


industrial activity


industrial activity



61

Outfall 61 drains the DPS station 4 and the fire training facility. Activities

are limited to vehicle parking and fire training activities. The fire training

facility is equipped with structural controls that allow all non-storm water

discharges generated from fire training activities to be discharged to the

sanitary sewer. Storm water structural controls associated with this

outfall include a storm/sanitary valve system to direct discharges to the

sanitary sewer during fire training activities. This outfall drains into a

tributary of Big Bear Creek, which flows into Bear Creek.

0.70

72

Outfall 72 drains mostly sheet flow from the southwest portion of runway

36L. Activities are limited to aircraft taxi, takeoff, and landings. This


Creek.

0.95

87

Outfall 87 supports drainage from the northern portion of the Simuflite

facility west parking lot. Storm water structural controls associated with

this outfall include one stormceptor. This outfall drains into a tributary of

Big Bear Creek, that discharges into Bear Creek.

0.95

87a

Outfall 87a supports drainage from the central portion of the Simuflite

west parking lot. Storm water structural controls associated with this

outfall include one stormceptor. This outfall drains into an unlined ditch

into a tributary that discharges to Bear Creek.

0.95

87b

Outfall 87b supports drainage from parking and loading areas west of the

Simufilte Bombardier facility. This outfall drains into an unlined ditch into

a tributary that discharges to Bear Creek.

0.95


Outfall


Runoff

Coefficient


industrial activity


industrial activity



88

Outfall 88 supports drainage from the north and eastern portions of the

GE Lighting facility (1717 W. Airfield Drive). This outfall drains into a

tributary of Big Bear Creek, that discharges into Bear Creek.

0.95

89

Outfall 89 supports drainage from the north central portions of the GE

Lighting facility parking lots (1717 W. Airfield Dr.). This outfalls drains

into a tributary of Big Bear Creek, that discharges into Bear Creek.

0.95

90

Outfall 90 supports drainage from the western portions of the GE Lighting

facility parking lots (1717 W. Airfield Drive). This outfall drains into a

tributary of Big Bear Creek, that discharges into Bear Creek.

0.95

91

Outfall 91 supports drainage from the Composite Technology/Sikorsky

facility (1727 S. Main Street). Storm water structural controls associated

with this facility include two storm water treatment devices and one

oil/water separator. This outfall drains into a tributary of Big Bear Creek,

which discharges into Bear Creek.

0.80

92

Outfall 92 supports drainage from the CEVA Logistics facility (1901 W.

Airfield Drive). This outfalls drains into a tributary of Big Bear Creek,

which discharges into Bear Creek. Storm water structural controls

associated with this facility include one oil/water separator.

0.95

96

Outfall 96 supports drainage from areas off DFW Airport property north

of Mustang Drive. This outfall drains into a concrete lined channel into a

tributary that discharges to Bear Creek.

0.95


Outfall


Runoff

Coefficient


industrial activity


industrial activity



97

Outfall 97 supports drainage from the public side west of the American

Airlines Warehouse, AA Hangar 2 , AA Hangar 3, and AA Hangar 4.

This outfall drains into an unlined ditch into a tributary that discharges to

Bear Creek.

0.95

98

Outfall 98 supports drainage from AA Hangar 4 newly re-routed roof

drains as a result of the hangar drain project. Velocity dissipaters are

present at the mouth of the outfall. This outfall drains into an unlined

ditch into a tributary that discharges to Bear Creek.

0.95

98a

Outfall 98a supports drainage from AA Hangar 4 newly re-routed roof

drains as a result of the hangar drain project. Velocity dissipaters are

present at the mouth of the outfall. This outfall drains into an unlined

ditch into a tributary that discharges to Bear Creek.

0.95

12

Outfall 12 drains the UPS cargo facility. Activities include aircraft taxi,

vehicle and aircraft fueling, light vehicle/aircraft maintenance activities,

GSE operations, loading/unloading operations, and aircraft deicing

activities. Storm water structural controls associated with this outfall

include storm water valve systems associated with the Taxiway Charlie

Deicing Pad. In addition, one fuel separator, Type D storm water inlets,

and Type B-1 storm water inlets support portions of the UPS ramp areas.

Outfall 12 drains into a storm water channel that discharges to Grapevine

Creek.

0.80

15

Outfall 15 drains employee-parking areas. Activities are limited to visitor

and employee vehicle parking. Outfall 15 drains into a storm water

channel that discharges to Grapevine Creek.

0.95


Outfall


Runoff

Coefficient


industrial activity


industrial activity



16

Outfall 16 drains portions of the ramp (airside) for Terminal B and

associated taxiway. Activities conducted in this drainage area include

aircraft taxi, aircraft deicing, aircraft/vehicle fueling, aircraft/vehicle

parking, ground support equipment operation and maintenance. Storm

water structural controls associated with this outfall include valve systems

associated with HY Deicing Pad. In addition, two fuel separators and

Type D storm water inlets support portions of the Terminal B ramp.

Outfall 16 drains into a storm water channel that discharges to Grapevine

Creek.

0.80

16a

Outfall 16a drains the northern tip of Runway 18L and associated

taxiway. Activities conducted in this drainage area include aircraft taxi

and takeoff and landings. Outfall 16a drains into a storm water channel

that discharges to Grapevine Creek.

0.95

17

Outfall 17 drains the public parking side of Terminal A, the Corporate

Aviation Facility, the American Eagle cargo facility, and portions of the

American Airlines (AA) Air Cargo facility, AA GSE facility, and AA Mail

facility. Activities include aircraft taxi, vehicle fueling, and

loading/unloading operations. Storm water structural controls associated

with this outfall include Type B inlets located around ramp areas for the

1E satellite terminal. This outfall drains into a storm water channel that

discharges to Grapevine Creek.

0.95/0.80

29

Outfall 29 drains the northwest portion of the North Foreign Trade Zone.

This area is composed of light industry, office buildings, and warehouses.

Activities are limited to vehicle parking and loading/unloading operations.

Storm water structural controls associated with outfall include

stormceptors associated with tenant warehouse facilities. This outfall


0.70


Outfall


Runoff

Coefficient


industrial activity


industrial activity



30

Outfall 30 drains the south parking areas of Nippon Express (located at

1100 N. 28th Avenue) and the north parking area of the DFW Foreign

Trade Center 1 located at (1205 Royal Lane). This area is composed of

light industry, office buildings, and warehouses. Activities are limited to

vehicle parking and loading/unloading operations. This outfall discharges

to Grapevine Creek.

0.70

31

Outfall 31 drains the northwest portion of the ICP area including facilities

off N. 28th Avenue (Hillwood Network Logistics, Nippon Express,

Trammel Crow Building 8, eastern portions of Siemens, XPEDX, NEC

America, and Avail. A small portion of Esters Boulevard (XPEDX). This

area is composed of light industry, office buildings, and warehouses.


This outfall discharges to Grapevine Creek.

0.7

32

Outfall 32 drains the southwest portion of the ICP area (DFW Education

Center, Multicam, Allflex, and Paragon Foothill LLC facilities). This area

is composed of light industry, office buildings, and warehouses. Activities

are limited to vehicle parking and loading/unloading operations. This

outfall discharges into the city of Irving MS4 (to Grapevine Creek).

0.70

33

Outfall 33 drains the east side of the Multicam facility located at 1315

Royal Lane. Activities are limited to vehicle parking and

loading/unloading operations. This outfall discharges into the city of

Irving MS4 (to Grapevine Creek).

0.70

57

Outfall 57 drains sheet flow originating from undeveloped areas south of

N. Airfield Drive. Outfall 57 drains into a storm water channel that


0.22


Outfall


Runoff

Coefficient


industrial activity


industrial activity



58

Outfall 58 drains the northwest side of runway 17R. Activities conducted

in this drainage area include aircraft taxi, takeoff and landings. This

outfall drains to a storm water channel that flows to Grapevine Creek.

0.95

59

Outfall 59 drains the central portion of runway 17R. Activities conducted

in this drainage area include aircraft deicing, aircraft taxi, takeoff and

landings. Storm water structural controls associated with this outfall

include storm water valve systems to control discharges associated with

deicing activities on the North Hold Pad. This outfall drains to a storm

water channel that flows to Grapevine Creek.

0.22

059



outfalls (including outfalls 12, 16, 63, 17, 65, and 59). Outfall 059 is

located in a storm water channel that flows to Grapevine Creek.

63

Outfall 63 drains areas along N. International Pkwy including the SkyLink

train maintenance facility. Activities include loading/unloading operations

and train maintenance. Storm water structural controls associated with

this outfall include one stormceptor supporting the SkyLink maintenance

facility. Outfall 63 drains into a storm water channel that discharges to

Grapevine Creek.

0.70

64Outfall 64 drains areas along of N. International Pkwy. Outfall 64 drains

into a storm water channel that discharges to Grapevine Creek.0.95


Outfall


Runoff

Coefficient


industrial activity


industrial activity



65

Outfall 65 drains areas supporting the AA GSE and mail cargo facilities.

Activities conducted in this drainage area include vehicle fueling, vehicle

parking, and ground support equipment operation and maintenance.

Storm water structural controls associated with this outfall include

stormceptors supporting the AA GSE facility. This outfall drains to a

storm water channel that flows to Grapevine Creek.

0.80

66a and 66b

Outfalls 66a and 66b drains loading areas supporting the Aviall facility.


Storm water structural controls associated with this outfall include

stormceptors associated with the Aviall facility. This outfall discharges to

Grapevine Creek.

0.70

67

Outfall 67 drains loading areas supporting the Lithonia Lighting/Siemens

Rapistan facility. Activities are limited to vehicle parking and

loading/unloading operations. This outfall discharges to Grapevine

Creek.

0.70

70

Outfall 70 drains sheet flow originating from undeveloped areas south of

N. Airfield Drive, areas west of N. International Pkwy and a majority of

the parking lot at Remote North Parking. Outfall 70 drains into a storm

water channel that discharges to Grapevine Creek.

0.22

71

Outfall 71 drains areas east of N. International Pkwy and portions of the

parking lot associated with the North Control Plaza. Outfall 71 drains into

a storm water channel that discharges to Grapevine Creek.

0.95

76Outfall 76 supports drainage from the Founders Plaza. Outfall 76

discharges into the headwaters of Grapevine Creek.0.22


Outfall


Runoff

Coefficient


industrial activity


industrial activity



77*

Outfall 77 supports drainage from the southern parking areas at the

Trammel Crow Trade Centers 3, 4, and 5 facilities located in the ICP

area. Activities are limited to warehousing, light industry, and

loading/unloading activities. This outfall drains into Grapevine Creek.

0.70

78*

Outfall 78 drains loading areas supporting the Siemens Warehouse

facility (1011 N. 28th Avenue) in the ICP area. Activities are limited to

vehicle parking and loading/unloading operations. This outfall contains a

rubber check valve backflow device inserted prior to the mouth of the

pipe and discharges into Grapevine Creek.

0.70

79

Outfall 79a supports drainage from the western portion of the Trans-

Trade Inc./Broder Bros. Facility in the ICP area. This outfall contains a

rubber check valve backflow device at the mouth of the pipe designed to

discharge first flush storm water once the detention pond reaches

capacity. Activities are limited to warehousing, light industry, and

loading/unloading activities. This outfall drains into a concrete lined


0.70

80*

Outfall 80 supports drainage from the southern portion of the Aviall

facility. Activities are limited to vehicle parking and loading/unloading

operations. Storm water structural controls associated with this outfall

include stormceptors supporting the Aviall facility. This outfall discharges

to a concrete lined channel and flows into Grapevine Creek.

0.70


Outfall


Runoff

Coefficient


industrial activity


industrial activity



81

Outfall 81a supports drainage from the eastern portion of the Trans-

Trade Inc./Broder Bros. Facility in the ICP area. This outfall contains a

rubber check valve backflow device at the mouth of the pipe designed to

discharge first flush storm water once the detention pond reaches

capacity. Activities are limited to warehousing, light industry, and

loading/unloading activities. This outfall drains into a concrete lined


0.70

82*

Outfall 82 supports drainage from the facility located at 2701 Regent

Boulevard in the ICP area. Activities are limited to vehicle parking, light

industry, and loading/unloading operations. Storm water structural

controls associated with outfall include oil/water separators (storm

troopers) and detention ponds. This outfall is designed to support high

flow conditions that bypass the detention pond and storm trooper and

flow directly to this outfall. This outfall drains into and unlined ditch and

flows to Grapevine Creek.

0.70

83*

Outfall 83 supports drainage from the facility located at 2701 Regent

Boulevard in the ICP area. Activities are limited to vehicle parking, light

industry and loading/unloading operations. This outfall drains into and

unlined ditch and flows to Grapevine Creek.

0.70

84*

Outfall 84 supports drainage from the Twinrose Regent I (2611 Regent

Blvd.) and Twinrose Regent II (2555 Regent Blvd.) facilities located in the

ICP area. Activities are limited to vehicle parking and loading/unloading

operations. Two detention ponds and two stormceptors are associated

with this outfall. This outfall drains into an unlined ditch and flows to

Grapevine Creek.

0.70


Outfall


Runoff

Coefficient


industrial activity


industrial activity



85*

Outfall 85 supports drainage from Esters Boulevard which includes the

northern parking areas at Trammel Crow Trade Centers 3,4,5 and Perot

Bax Global (2400 & 2402 Esters Boulevard). Activities are limited to

warehousing, light industry, vehicle parking, and loading/unloading

operations. This outfall discharges into Grapevine Creek.

0.70

86*

Outfall 86 supports drainage from the Trammel Crow Trade Center 2

facilities, Amazon.com warehouse, and the LifeScience Logistics facility.


Structural controls associated with the outfall include a stormceptor

supporting the Trammel Crow Trade Center 2 facility and detention

ponds located upstream that discharge to Grapevine Creek.

0.70

95

Outfall 95 supports drainage from the TwinRose Regent II facility (2555

Regent Blvd). Storm water structural controls associated with this outfall

include two oil/water separators. This outfall drains into an unlined ditch

into a tributary that discharges to Grapevine Creek.

0.70

26

Outfall 26 drains the northern portion of the Northeast Cargo facility.

Activities occurring in this area include aircraft taxi, loading/unloading

operations, aircraft fueling, ground support equipment operation, and

light vehicle/aircraft maintenance. Storm water structural controls

associated with this outfall include one fuel separator and Type D inlets

supporting portions of the NE Cargo ramp. This outfall drains to a storm

water channel discharging to Hackberry Creek.

0.80


Outfall


Runoff

Coefficient


industrial activity


industrial activity



27

Outfall 27 drains the middle portion of the Northeast Cargo facility.


operations, aircraft fueling, ground support equipment operation, and

light vehicle/aircraft maintenance. Storm water structural controls

associated with this outfall include one fuel separator and Type D inlets

supporting portions of the NE Cargo ramp. This outfall drains to a storm


0.80

28

Outfall 28 drains portions of the DFW Airport Pavements and Grounds

maintenance facility and sections of runway 35R. Activities include

aircraft taxi and landings, vehicle/equipment storage, vehicle fueling,

vehicle/equipment maintenance. One diversion box is located in this

area. This outfall drains to South Forth Hackberry Creek.

0.80

35

Outfall 35 drains the northern portion of runway 13L. Activities

conducted in this drainage area include aircraft taxi, takeoff and landings.

This outfall drains to a storm water channel that flows to Hackberry

Creek.

0.95

39

Outfall 39 drains the southern portion of runway 31R. Activities

conducted in this drainage area include aircraft taxi, takeoff and landings.

This outfall drains to a storm water channel that flows to Hackberry

Creek.

0.95

43

Outfall 43 supports drainage from the hotels and office buildings, Esters

114 Business Center, Parking Spot, and Smart Start facilities located off

Plaza Drive, O'Hare Drive, and Esters Blvd. in Irving, TX (off Airport

property). This outfall drains into Hackberry Creek.

0.95


Outfall


Runoff

Coefficient


industrial activity


industrial activity



60

Outfall 60 drains the southern portion of the Northeast Cargo facility.


operations, aircraft fueling, and ground support equipment operation.

Storm water structural controls associated with this outfall include two

fuel separator and Type D inlets supporting portions of the NE Cargo

ramp and DPS 3. A storm water valve system associated with NE Cargo

sump is located adjacent to DPS 3 and can be used to contain accidental

spills or releases from the NE Cargo ramp. This outfall drains to a storm


0.80

69

Outfall 69 drains the northeast portion of runway 17C and associated

taxiways. Activities are limited to aircraft taxi, takeoff and landings. This

outfall drains into a storm water channel discharging to Hackberry Creek.

0.95

20

Outfall 20 drains the ramp side area of Terminal A. Activities conducted

in this drainage area include aircraft taxi, takeoff and landings, aircraft

deicing, aircraft/vehicle fueling, aircraft/vehicle parking, ground support

equipment operation and maintenance. Storm water structural controls

associated with this outfall include nine fuel separators and Type D inlets

supporting portions of the Terminal A and Terminal C ramp. Storm water

valve systems to direct discharges associated with deicing activities at

the Taxiway Zulu and Echo-Kilo Deicing Pads are also associated with

this outfall. This outfall drains into a storm water channel that discharges

to Mud Springs Creek.

0.80

020



outfalls (including outfalls 21, 20, 27, 24, and 43). Outfall 020 is located

in a storm water channel that flows to Mud Springs Creek.


Outfall


Runoff

Coefficient


industrial activity


industrial activity



21

Outfall 21 drains the central portion of runways 35L, 35C, and 17R.


landings. This outfall drains into a storm water channel that discharges

to Mud Springs Creek.

0.95

24

Outfall 24 drains the American Airlines Hangar #5, the DFW Airport DPS

1 Station facility, areas along E. Airfield Drive. Activities conducted in this

area include aircraft taxi, aircraft maintenance, and vehicle fueling.

Storm water structural controls associated with this outfall include one

fuel separator and Type D inlets supporting portions of the East Hangar

ramp. This outfall drains into a storm water channel that discharges to

Mud Springs Creek.

0.8

24b

Outfall 24b drains areas supporting the airport vehicle and bus

maintenance facility and discharges sheet flow originating from

undeveloped areas east of E. Airfield Drive. Activities conducted in this

area include vehicle/equipment maintenance, and vehicle parking. Storm

water structural controls associated with this outfall include one fuel

separator and Type D inlets supporting portions of the DFW Airport

Maintenance facility. Outfall 24b drains into a storm water channel that

discharges to Mud Springs Creek.

0.80

36Outfall 36 drains areas associated with Taxiway Q. Outfall 36 drains into

a storm water channel that discharges to Mud Springs Creek.0.95

37

Outfall 37 drains sheet flow originating from undeveloped areas west of

E. Airfield Drive, the Solid Waste facility and the Hazmat yard and

supports drainage from Outfall I-7. Outfall 37 drains into a storm water

channel that discharges to Mud Springs Creek.

0.22/0.5


Outfall


Runoff

Coefficient


industrial activity


industrial activity



38


E. Airfield Drive. Outfall 38 drains into a storm water channel that


0.22

40




0.22

41




0.22

42

Outfall 42 drains undeveloped areas west of runway 35 R and the DFW

Airport Salvage Yard. Activities in this area are limited to vehicle and

equipment storage. This outfall drains sheet flow to a storm water

channel that flows to Mud Springs Creek.

0.95/0.50

I-7

Outfall I-7 drains first flush storm water discharging to fuel separators

located at airport vehicle and bus maintenance, pavements and grounds,

and the East hangar. Storm water structural controls associated with this

outfall include two storm water treatment systems with a shutoff valve to

divert flows to the IW line in the event of a major release. This outfall

drains into an unlined ditch that discharges to Mud Springs Creek.

0.80

68

Outfall 68 drains sheet flow originating from undeveloped areas east of

Runway 35R. Outfall 68 drains into an unlined ditch into Cottonwood

Branch Creek.

0.22


Outfall


Runoff

Coefficient


industrial activity


industrial activity



75*Outfall 75 drains undeveloped areas east of runway 35R. Outfall 75

drains into an unlined ditch that flows into Cottonwood Branch Creek.0.22

18

Outfall 18 drains the eastern portion of the United States Postal Service

mail facility, the former airport train maintenance facility (currently

vacant), Sky Chefs, Host Marriott, and the Gate Gourmet food

preparation facilities. Activities include vehicle maintenance, vehicle

fueling, and loading/unloading operations. Outfall 18 discharges into a

storm water channel discharging into the north end of Trigg Lake.

0.95

22

Outfall 22 drains ramp areas associated with Terminals C and E.


landings, aircraft deicing, aircraft/vehicle fueling, aircraft/vehicle parking,

ground support equipment operation and maintenance. Storm water

structural controls associated with this outfall include eight fuel

separators and Type D inlets supporting portions of the Terminal C,

Terminal E, and 5E ramp. A storm water lift station is also located east

of the 4E satellite terminal, and pumps storm water discharges to the

main trunk line. This outfall drains into a storm water channel

discharging to Trigg Lake.

0.80

23

Outfall 23 drains the Delta 5E complex and public parking areas

associated with Terminals C and E. Activities conducted in this drainage

area include vehicle fueling, vehicle parking, ground support equipment

operation and maintenance. This outfall drains into a storm water

channel discharging to Trigg Lake.

0.80

023



outfalls (including outfalls 45, 22, and 23). Outfall 023 is located in a

storm water channel that flows discharges to Trigg Lake.


Outfall


Runoff

Coefficient


industrial activity


industrial activity



34

Outfall 34 supports drainage from S. Airfield Drive and International

Parkway Instersection and N/S Service Road access loops. This outfall

drains down an approximate 50' concrete channel to Trigg Lake.

0.95

45

Outfall 45 drains the southern portion of runways 35L and 35C. Activities

include aircraft taxi, takeoff and landings, and aircraft deicing. Storm

water structural controls associated with this outfall include valve systems

to direct discharges associated with deicing activities on the Southeast

Hold Pad. This outfall drains into a storm water channel discharging to

Trigg Lake.

0.95

62

Outfall 62 drains the southern portions of runway 35L and associated

taxiways. This outfall drains to a storm water channel that discharges to

Trigg Lake.

0.95

73

Outfall 73 drains areas along the southern portions of International Pkwy.

Activities are limited to vehicle traffic, parking, and loading/unloading.

Outfall 73 discharges into a storm water channel which flows into Trigg

Lake.

0.95

106a

Outfall 106a drains portions of International Parkway west ofand at the

entrance to DFW Airport Headquarters. This outfall drains to a storm

water channel that discharges to Trigg Lake.

0.95

106b

Outfall 106a drains portions of International Parkway west of and storm

drains along the west entrance to the Rental Car Facility. This outfall

drains to a storm water channel that discharges to Trigg Lake.

0.95


Outfall


Runoff

Coefficient


industrial activity


industrial activity



R1

R1 supports drainage for the entire RAC complex. Approximately ten

storm water outfalls drain the rental car facilities and vehicle parking

areas. These outfalls all drain into the same storm water channel that

finally discharges to R1. Activities in this area include vehicle parking,

fueling, maintenance, and washing from predominantly rental car

agencies. The car rental facilities in this area are not required to obtain

an TPDES general permit. Outfall R1 discharges into an unlined ditch

discharging to Black Draw Creek.

0.80

R2

R2 supports drainage from the new bus maintenance facility. Activities in

this area include vehicle parking, fueling, maintenance, and washing.

Outfall R2 discharges into an unlined ditch discharging to Black Draw

Creek.

0.80

10

Outfall 10 drains storm water discharge from the west side of E. Airfield

Dr and includes the eastern parking drainage from the Flight Safety

International facility and sheet flow from the headwaters of Estelle Creek.

0.95

74*

Outfall 74 drains storm water from Flight Safety International operations

which flow directly to a bioretention basin located west of Flight Safety

International. This outfall drains into the headwaters of Estelle Creek.

0.95

74a*

Outfall 74a supports drainage from the northern portion of the Flight

Safety International facility expansion (3201 E. Airfield Dr). Storm water

structural controls associated with this outfall include one storm trooper.

0.95

Runoff Coefficients estimated using Recommended Runoff Coefficient Values Table 1.6 in the

iSWM Technical Manual provided on the North Central Texas Council of Government website

(copy of table attached)


OUTFALL CHARACTERIZATION CHART - … CHARACTERIZATION CHART Page 1 of 21 Updated January 2016....

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