HomeMy WebLinkAbout01-11 Win. Regional Airport Storm Water Mngmt Computations�
1
REHABILITATE RUNWAY 14 -32
„na/nnlo
•
70220
43
•
•
07116 -tlmOl xls
HYDRAULIC GRADE LINE COMPUTATIONS
PROJECT:
REHABILITATE RUNWAY I4 -32
44.6
13
OW VA 07116
DATE:
11292010
0.10
INLET OUTLET Do Do Lo Sfo Hf JUNCTION LOSS FINAL INLET RIM
STATION WS ELEV. % V. Ho Oi U OM 0211 Hi ANGLE K M HI 1.3 HI 0.5 Hi H WS ELEV ELEV
0168
70220
43
44.6
142
0.0010
0.13
13
06fi
44.6
13
5]9.94
262 0.92
5
0.10
0.26
1.64
0.92
1.05
]0325
720.00
Di67
706.15
48
446
166
0.0010
0.16
12
0.66
20.8
iD
20826
1.55 0.54
19
0.1fi
0.25
0.66
0.33
050
765 fi5
]1560
D105
70821
30
20.8
i6fi
O.OWS
0.47
10
0.39
20.8
10
20826
155 0.54
1 31
1 0.28
1 043
039
1
0.19
0.66
709.67
720.00
Ei04
710.17
30
20.8
548
0.0025
1.3]
10
0.39
t9
14
11049
3.04 1,01
34
0.33
1.00
0.39
0.19
1.56
71113
715.63
E103
714.97
30
]9
130
0.0004
005 14
0]6
NO INCOMING INLET
1 0]8
0.38
1 0.43
71540
)Head Wall
0
G
(D
d
to
Ol
(D
W-
N
0o
DESIGN OF OUTLET PROTECTION FROM A ROUND PIPE FLOWING FULL 120
MAXIMUM TAILWATER CONDITION ( Tw � 0.5 DIAMETER)
"o 110., I�A;
Outlet 100
Pipe
1 Min. - Do + 0.4 La
Diameter, Do I 90!
__Tailwa ter _ 0.5Do
o�. 70
Al 50
W, ; 12
WZ = 30
Recommended
dso 6'l
3
5
10
20
50 3 100 200
Discharge, ft. /sec. (L_ (yA CFS
v
v
2
v
n
m
L
d
1 �
O
v
Jo
1000
12/3/2010 4:19 PM
® STORMWATER MANAGEMENT CALCULATIONS
REHABILITATE RUNWAY 14 -32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
E
AIP PROJECT NO. 3 -51- 0059 -24
DELTA PROJECT NO. VA 07116
DATE: September 9, 2010
Stormwater Management Summary
Section
Area (acres)
Composite C
Tc
Storm Event
Q Pre (cfs)
Q Post Ids)
2- Year
96
96
A
141.8
0.34
34
10- Year
135
135
100 -Year
247
247
2- Year
81
1 81
B
96.5
0.35
26
10- Year
115
115
100 -Year
207
207
2- Year
31
31
C 1
23.9
1 0.61
31
10- Year
1 44
1 44
100 -Year
78
78
2- Year
152
152
D
146.8
0.47
30 1
10- Year
214
214
100 -Year
388
388
2- Year
9
9
E
8.3
0.39
22
10-Year
12
12
100 -Year
21
21
N: \07116 \03 Project Data \Design \Drainage \07116 - SWM Calcs
1/14
1=104 19 PM
®STORMWATER MANAGEMENT CALCULATIONS
REHABILITATE RUNWAY 14.32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 351 -0059 -24
DELTA PROJECT NO. VA 07116
DATE: September9,2010
Pre- Devllo ment- SECTIONA
Drainage Area
Length
Slope
Cover
Description
C Value
Area (AC)
CA
Pmmiable
03
131.6
39.4
Impehniable
0.9
10.2
9.1
250%
Total =
141.8
48.5
Use Kirpioh Equation
Composite C = 0.34
1713'
1.40%
Time of Concentration
Description
Length
Slope
Cover
Velocity
To
Description
Sheet Flow
200'
2.5%
c = 0,3
-
14
Use Seely. Equation
Shallow Concentrated
917'
250%
n =0.24
-
6
Use Kirpioh Equation
Channel Flow
1713'
1.40%
n =0.035
3fps
10
Natural Channel
Pipe Flow
542'
1.00%
n =0.013
8fps
2
RCP Pipe
Channel Flow
577'
1,40%
n =0.035
6fps
2
Natural Channel
Total To = 34 min
Peak Olscharge
1= a /(b +To)
2 -Year Sto,
a=
9379
b=
13.15 1=
20
o/hr
10 -Year Storm:
a=
14102
b=
15.77 1=
2.8
in/hr
®
100 -year Storm:
a=
211.40
b=
15.42 1=
4.1
o/hr
Q= CAI Cf
:
2 -Year f:
O=
96
oft
10 -Near Slorm grm:
O=
135
cfs
100 -Year Storm:
O =
247
cis
u
N:\07116 \03 Project DatMDesign \Drainage \07116 - SWM Coca 2114
12/3/2010 4:19 PM
STORMWATER MANAGEMENT CALCULATIONS
REHABILITATE RUNWAY 14412
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3- 51-0059 -24
DELTA PROJECT NO. VA 07116
DATE: September9, 2010
Pre-Development - SECTION B
Drainage Area
Description
C Value
Area (AC)
CA
Penoiable
0.3
88.5
26.5
Imperrniable
0.9
80
72
Total=
96.6
33.7
b=
Composite C = 0.35
3.4
iNhr
Time of Concentration
Description Length Slope Cover Velocity To Description
Sheet Flow 200' 1.4% c= 0.3 - 16 Use Seelye Equation
Shallow Concentrated 210' 100% n =0.24 - 3 Use Kiroch Equation
Channel Flow 1713' 1.80% n =0.035 4fps 7 Grass Channel
Total To = 26 min
Peak Discharge
1 =a /It, a TC)
2 -Year Storm'.
a=
9339
b=
13.15 1=
2.4
in /hr
10 -Year St..
a=
14102
b=
1577 1=
3.4
iNhr
is
100 -Year Storm:
a=
21140
b=
17.42 I=
4.9
ioPor
Q = C A I Cf
2 -Year Storm'.
Q=
81
as
-year Storm',
Q-
115
cfs
100 -Year Storm'.
Q-
207
cfs
I
Na07116\03 Project Data \DasignV)minage \W 116 - SWM CaICS 3/14
12/32010 419 PM
®STORMWATER MANAGEMENT CAL
REHABILITATE RUNWAY 1442
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3- 51- 0059 -24
DELTA PROJECT NO. VA 07116
DATE: September9,2010
Pre-Development - SECTION C
Drainage Area
Description
C Value
Area (AC)
CA
Pelmiable
0.3
113
3.5
Impermiable
DA
112
11.0
Total=
23.9
14.5
b=
Composite C = 0.61
3.0
i1-1
Time of Concentration
Description Length Slope Cover Velocity Tc Description
Sheet Flow 200' 1.6% c = 0.3 - 15 Use Seelye Equation
Shallow Concentrated 210' 3.00% n =0.24 - 2 Use Kilpich Equation
Channel Flow 1645' 1.00% n =0035 2fps 14 Grass Channel
Total Tc = 31 min
Peak Dischame
1 =a /(b, Tc)
2 -Year Stoon:
a=
93.79
b=
13.15 1=
2.1
inAnr
10 -Year Stone:
a=
141.02
b=
15.77 I'
3.0
i1-1
®
100 -Year Stonn:
a=
21140
b=
17.42 1=
4.3
in/hr
O =CAICf
2 -Year StoErr
G=
31
cfs
10 - Vear stone:
. Q=
44
cfs
100 -Year Stonn:
O=
78
He
1
N \07116103 Project Data\Deslgn \Drainage \W 116 - SWIM Coca 4114
1MI2010 4:19 PM
® JIORMWAIhN MANAIi[M[NI GAI
REHABILITATE RUNWAY 14]2
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3- 514059 -24
DELTA PROJECT NO. VA 07116
DATE'. September 9, 2010
Pro-Development - SECTION D
Drainage Area
Description
C Value
Area (AC)
CA
Permeable
03
105.1
31.5
Impermiable
0.9
417
37.5
Total =
146.8
69.0
b=
Composite C= 0.47
3.1
iNhr
Time of Concentration
Description Length Slope Cover Velocity Tc Description
Sheet Flow 200' 3.0% c= 03 - 14 Use Seelye Equation
Shallow Concentrated 1762' 120% n =0.24 - 14 Use l(ilpich Equation
Channel Flow 808' 1.00% n =0015 6fps 2 Concrete Lined
Total TC = 30 min
Peak Discharge
1 =a /(b t TC)
2 -Year Storm'.
a=
93.79
b=
13.15 1=
2.2
iWhr
10 -Year SWrm:
a=
141.02
b=
15]7 1=
3.1
iNhr
®
1-Year Storm:
00
a=
211.40
b=
1742 1=
4.5
in1hr
Q =CAICf
2 -Year Storm:
0=
152
ch
10 - Year Strom:
0=
214
cfs
100 -Year Storm:
0=
388
cf.
11
N: \07116 \03 Project Data \Des1gmDrainage \07116 - SWM Calas 5114
103/2010 4:19 PM
® STORMWAItN MANHIiGMhN GHL
REHABILITATE RUNWAY 14J2
WINCHESTER REGIONAL AIRPORT
WIN CHESTER, VIRGINIA
AIP PROJECT N0. 3 -51 -0059 -24
DELTA PROJECT N0. VA 07115
DATE: September9, 2010
Pm-Development - SECTIONE
Dralnaae Area
Description
C Value
Area (AC)
CA
a=
93.79
Permiable
0.3
7.0
21
10 -Year Storm:
Impermiable
0.9
1.3
1,2
3.7
iNhr
®
Total=
8.3
3.3
b=
1142 1=
5.3
Composite C = 8.39
Q =CAICf
2- YearSmtm:
Q=
9
Time of Concentration
10 -Near Stortn.
Description
Length
Slope
Cover Velocity
Tc
Description
Sheet flow
209
03%
c =0.3 -
18
Use Seelye Equation
Shallow Concentrated
789'
5.00%
n =0.24 -
4
Use Kirpich Equation
Total Tc
= 22 min
Peak Discharae
1 =a I in+Tc)
2 -Year Storm:
a=
93.79
b=
13.15 1=
2.7
INnr
10 -Year Storm:
a=
141.02
b=
15]7 1=
3.7
iNhr
®
100 Yea Storm:
a=
21140
b=
1142 1=
5.3
iiVnr
Q =CAICf
2- YearSmtm:
Q=
9
the
10 -Near Stortn.
0 =
12
cis
100 - Year Stonn:
Q =
21
cis
u
N:W7116 \03 Project OamMesign \Drainage \07116 - SWIM Caics 6114
11/3/20104:19 PM
®STORMWATER MANAGEMENT CALCULATIONS
REHABILITATE RUNWAY 1442
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3- 51- 0059 -24
DELTA PROJECT NO. VA 07115
DATE: September9,201D
Post-Development - SECTION A
Dainaoe Area
Length
Slope
Cover
Description
C Value
Area (AC)
CA
Peoniable
0.3
131.1
393
Impenoiable
09
10.7
9.6
2.50%
Total=
141.8
48.9
Composite C= 0.34
Time of Concentration
Desorption -
Length
Slope
Cover
Velocity
To
Description
Sheet Flow
200'
2.5%
C-03
-
14
Use Seelye Equation
Shallow Conoenirated
- 917'
2.50%
n =0.24
-
6
Use Kirpich Equation
Channel Flow
1713'
1.40%
n =0.035
3the
10
Natural Channel
Pipe Flaw
542'
100%
n=0.013
8fps
2
RCP Pipe
Channel Flow
577'
1.40%
n =9.035
6fps
2
Natural Channel
Peak Discharge
1= a1(b +Tc) 2 -Year Stoon: a= 9379 b=
® 10 -Year St." c a= 141.02 b=
100 -Year Stonn: a= 21100 b=
C1
D =CAICf 2 -Near Stonn: O= 96 cfs
10 -Near Stortn: O= 135 cis
100 - Year Stonn: O = 247 cis
Total To = 34 min
1315 1 = 2.0 ihi
15.77 1 = 2.0 mini
17.42 1 = 4.1 in/hr
N: \07116 \03 Project Data\DeslgaDminage\W 115 - SWM Coca 7/14
12/3/2010 4:19 PM
®STORMWATER MANAGEMENT CALCULATIONS
REHABILITATE RUNWAY 14432
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3 -51 -0059 -24
DELTA PROJECT NO. VA 07116
DATE: September 9, 2010
P051-Development - SECTION B
Drainage Area
Description
C Value
Area (AC)
CA
Pemmable
0.3
88.5
26.5
Impenniable
09
8.D
7.2
Total=
96.5
37.7
Composite C= 0.35
Time of Concentration
Description Length Slope Cover Velocity To Description
Sheet Flaw 200' 1.4% c= 0.3 - 16 Use Seelye Equation
Shallow Concentrated 210' 1.00% n =0.24 - 3 Use Kirpioh Equation
Channel Flow 1713' 180% n =0.035 4fps 7 Grass Channel
Peak Discharge
0
O =CAICf
2 -Year Storm: a= 93.79 b=
10 -Year Storm: a= 141.02 b=
100 -Year Storm: a= 211.40 b=
2 -Year Stonn: O = 81 as
10 -Vear Stonn: 0 = 115 cfs
100 - Year Stem: Q = 207 as
Total To = 26 min
13.15 1= 2.4 inlhr
1537 1 = 3.4 inlhr
17.42 1 = 4.9 inlhr
N:\D7116\03 Project Data \Design \Drainage \W 116 - S WM Coles 8/14
1202010 4:19 PM
isSTORMWATER MANAGEMENT CALCULATIONS
REHABILITATE RUNWAY 14 -M
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3- 51-0059 -24
DELTA PROJECT NO. VA 07116
DATE: Septemberg, 2010
Post-Development - SECTION C
Drainage Area
Description
C Val0e
Area (AC)
CA
Penniable
0.3
11.7
3.5
Impermiable
0.9
12.2
11.0
Total =
23.9
14.5
Composite C = 0.61
Time of Concentration
Sheet Flow 200'
Shallow Concentrated 210'
Channel Flaw 1645'
Peak Discharge
I = a / lb + Tc) 2 - Year Storm:
® 10 - Year Storm.
100 - Year Storm'.
300% n =0.24 - 2 Use
1.00% n = 0.035 2 fps 14 Grass
Total Tc
a= 93.79 b= 13.15 1=
e- 141.02 b- 15.77 1=
a= 211.40 b= 17.42 1=
O =CAICf 12 ear 31 is
Year Sn0:
O- 44 cfs
100 -Year She. 0- 78 cfs
31 min
2.1 inlhr
30 h/hr
4.3 irMr
N: \07116 \03 Project Dala \DesignMminage107116 - SWM Calm 9114
1202010 4:19 PM
®STORMWATER MANAGEMENT CALCULATIONS
REHABILITATE RUNWAY 14 -32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
Alp PROJECT NO. 3 -51 -0059 -24
DELTA PROJECT NO. VA 07115
DATE: September9,2010
Post-Development - SECTION D
Drainage Area
Description
C Value
Area (ACI
CA
Penniable
0.3
104.1
31.2
Impenniable
'0,9
42.7
38.4
Total=
146.8
69.6
Composite C= 0.47
Time of Concentration
Description Length Slope Cover Velocity TO, Description
Sheet Flow 200 3.0% c= 03 - 14 Use Seelye Equation
Shallow Concentrated 1762' 110% n =0.24 - 14 Use Kimich Equation
Channel Flow 808' 100% n =0.015 6fps 2 Concrete lined
Total Tc = 30 min
Peak Discharge
1= a /(b +To)
2 -Year Storm'.
a=
93.79
b=
13.15 1=
2.2
in/hr
10 -Year Slot m',
a=
141.02
b=
15.77 1=
3.1
infhr
®
100 -Year Storm:
a=
21140
b=
17.42 1=
4.5
iothr
O =CAICf
2 -Near Stortn:
Q=
152
cfs
10 -Near Stortn:
O=
214
cfs
100 -Year Stonn:
C=
388
cfs
C
N: \07116\03 Project Data \Design \Drainage \07116 - SWM Calos 10114
IM/2010 4:19 PM
®STORMWATER
MANAGEMENT CALCULATIONS
REHABILITATE RUNWAY 14 -32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
Description
AF PROJECT NO 3 -51 -0059 -24
Area (AC)
DELTA PROJECT NO. VA 07116
DATE: September 9, 2010
Post-Development - SECTION E
Urethane Area
Description
C Value
Area (AC)
CA
Permeable
0.3
7.0
21
Impermeable
0.9
1.3
11
Total=
8.3
3.3
Composite C= 0.39
Time of Concentration
Description
Length
Slope
Cover Velocity
To
Description
Sheet Flow
200'
0.7%
c= 0.3 -
18
Us. Seely. Equation
Shallow Concentrated
789
5.00%
n =0.24 -
4
Use Kimich Equation
Total To
= 22 In
Peak Discharge
1= a /(b +To) 2 -Year Stonn: a= 9379 b=
® 10 -Year St.. a= 141.02 b=
100 -Year Stan '. a= 211.40 b=
r❑
D =CAICf 2 -Year Storm: Q= 9 cfs
10
-Year Sto; 0= 12 cfs
100 -Year Storm: Q= 21 cfs
13.15 1= 27 irhr
15.77 1= 37 inlhr
17.42 1= 5,3 irMr
N.M7116\03 Project Data \Design \Drainage \W 116 - SWM Calcs 11/14
PERFORMANCE -BASED WATER QUALITY CALCULATIONS APPENDIXSD
GKV 0_1 116
® Worksheet 1 SEL716N �A1�
Page 1 of 3
STEP 1 Determine the applicable area (A) and the post- developed impervious cover
UPOS)'
Applicable area (A)* _ I ' g acres
Post - development impervious cover
other:
PAVEMENT
acres
Total 10' 2 acres
® Tpo51= (total post - development impervious cover _ A) x 100 = 1 2 %
* The area subject to the, criteria may vary from locality to locality. Therefore,
consult the locality for proper determination of this value.
STET' 2 Determine the average land cover condition (40.hed) Dx the existing
impervious cover (I�ating).
Average land cover condition 1,,a ,shed):
If the locality has determined land cover conditions for individual watersheds within its
jurisdiction, use the watershed specific value determined by the locality as `watenhed'
7 _NA d
watershed
Otherwise, use the Chesapeake Bay default value:
watenhed =16%
i
SD -5
structures =
r acres
parking lot =
acres
rnarlwav =
or . acres
other:
PAVEMENT
acres
Total 10' 2 acres
® Tpo51= (total post - development impervious cover _ A) x 100 = 1 2 %
* The area subject to the, criteria may vary from locality to locality. Therefore,
consult the locality for proper determination of this value.
STET' 2 Determine the average land cover condition (40.hed) Dx the existing
impervious cover (I�ating).
Average land cover condition 1,,a ,shed):
If the locality has determined land cover conditions for individual watersheds within its
jurisdiction, use the watershed specific value determined by the locality as `watenhed'
7 _NA d
watershed
Otherwise, use the Chesapeake Bay default value:
watenhed =16%
i
SD -5
SECTION 'A'
Worksheet 1
Page 2 of 3
Determine the existing impervious cover of the development site if present.
Existing impervious cover:
structures =acres
parking lot = Pf acres
roadway = ! acres
other:
PkVEMENT = 10. 2. acres
acres
Total = 10 - a acres
Imsmg = (total existing impervious cover _ A *) x 100 = 7' Z %,
* The area should be the same as used in STEP 1.
STEP 3 Determine the appropriate development situation.
The site information determined in STEP 1 and STEP 2 provide enough information to
determine the appropriate development situation under which the performance criteria will apply.
Check (✓) the appropriate development situation as follows:
y Situation 1: This consists of land development where the existing percent impervious
cover \•cristing) is less than or equal to the average land cover condition
(Iwata�hev) and the proposed improvements will create a total percent
impervious cover (I .,) which is less than or equal 7o the average land
cover condition (Iwa hj.
o
16 /O o
po-t 0 5 Iwatershed
5D -6
Worksheet 1 SECTION W
Page 3 of 3
Situation 2: This consists of land development where the existing percent impervious
cover (Ie %sang) is less than or equal to the average land cover condition
G tershed) and the proposed improvements will create a total percent
impervious cover (4,,) which is e eater than the average land cover
condition (I,.,.hed)•
'existing duo < Iwatershed %; and
'post % > watershed %
NA Situation 3: This consists of land development where the existing percent impervious
cover ('existing) is ,greater than the average land cover condition (IVe1Crshe�.
'existing % J Iwatershed
Situation 4: This consists of land development where the existing percent impervious
cover \'existing) is served by an existing stormwater management BMP(s)
® that addresses water quaa tw.
If the proposed development meets the criteria for development Situation 1, than the low
density development is considered to be the BMP and no pollutant removal is required.
The calculation procedure for Situation 1 stonS If the proposed development meets
the criteria for development Situations 2, 3, or 4, then proceed to STEP 4 on the
appropriate worksheet.
® 5D_7
PERFORMANCE-BASED WATER QUALITY
OKV 0711(,
® Worksheet 1 SECTION '0
Pagel of3
STEP .I /Determine the applicable area (A) and the post - developed impervious cover
7
``Pos)• - -
Applicable area (A)* _ %-Sacres
Post - development impervious cover:
structures = it acres
parking lot = Pr acres
roadway = or acres
other:
PAVEMENT = 8.0 acres
acres
Total acres
® Tpo t = (total post - development impervious cover — A) X 100 = 3 u
* The area subject to the criteria may vary from locality to locality. Therefore,
consult the locality for proper determination of this value.
STEP 2 Determine the average land cover condition (I„,ate shed) Dr the existing
impervious cover (I =hti- ).
Average land cover condition (Twa,,hed):
If the locality has determined land cover conditions for individual watersheds within its
jurisdiction, use the watershed specific value determined by the locality as lwatershed'
_ o
warershed �o
Otherwise, use the Chesapeake Bay default value:
lwatershed — 16%
® 5D -5
PERFORMANCE- BASED .WATER QUALITY CALCULATIONS APPENDIX 5D-
OKv 01116
®
Worksheet 1 5EMON '8'
Page 2 of 3
Determine the existing impervious cover of the development site if present.
Existing impervious cover:
structures acres
parking lot = �f acres
roadway = �j r acres
other:
PAAEME KT = 0.0 acres
acres
Total — $ acres
Ie,dst;ng = (total existing impervious cover _ A *) x 100 = 8.3
* The area should be the same as used in STEP 1.
STEP 3 Determine the appropriate development situation.
The site information determined in STEP 1 and STEP 2 provide enough information to
determine the appropriate development situation under which the performance criteria will apply.
Check (✓) the appropriate development situation as follows:
Situation 1: This consists of land development where the existing percent impervious
cover (IC%5ting) is less than or equal to the average land cover condition
(IWIlLe.h.) and the proposed improvements will create a total percent
impervious cover (Ipps) which is less than or equal to the average land
Cover condition (Iwatushed)•
Ipost 8.3 % < Iwatershed 16 %
® 5D -6
PERFORMANCE -BASED WATER QUALITY'CALCULATIONS APPENDIX.5D
OKV a0II16
® 5E("TI N ''
Worksheet l
Page 3 of 3
N A Situation 2: This consists of land development where the existing percent impervious
cover (IeXsdng) is less than or equal to the average land cover condition
(i t,,he j and the-proposed improvements will create a total percent
impervious cover (Ipns) which is greater than the average land cover
condition \`watershed). -
E
'existing % 'watershed - %; and
'post % > ieatershed
"I Situation 3: This consists of land development where the existing percent impervious
cover (Ie sag) is greater than the average land cover condition (I.,,rshed)•
0 00
existing n i
STEP l Determine the applicable area (A) and the post - developed impervious cover
(1POS).
Applicable area (A)* acres
Post - development impervious cover:
structures = Y' acres
parking lot =,,t acres
roadway acres
other:
MLMENT . = y I , 7 acres
acres
Total 41'1 acres'
® IPost = (total post - development impervious cover - A) x 100 = 28' 4
* The area subject to the criteria may vary from locality to locality. Therefore,
consult the locality for proper determination of this value.
STEP 2 Determine the average land cover condition (1„.a1ershed) ox the existing
impervious cover (I. ati- ).
Average land coder condition (Tµatershed :
If the locality has determined land cover conditions for individual watersheds within its
jurisdiction, use the watershed specific value determined by the locality as watershed.
_ %
lwarershed
Otherwise, use the Chesapeake Bay default value:
watershed — 16%
® 5D -5
Determine the existing impervious cover of the development site if present.
Existing impervious cover:
structures = q acres
parking lot = >` acres
roadway
other:
PAVEMENT
— 0 acres
= 4 t `1 acres
acres
Total — L41.1 acres
® Ie�,.g = (total existing impervious cover = A *) x 100 = 2e. y %
* The area should be the same as used in STEP 1.
STEP 3 Determine the appropriate development situation.
The site information determined in STEP 1 and STEP 2 provide enough information to
determine the appropriate development situation under which the performance criteria will apply.
Check (✓) the appropriate development situation as follows:
N/A Situation 1: This consists of land development where the existing percent impervious
cover \iw sting) is less than or equal to the average land cover condition
(Iwatershed) and the proposed improvements will create a total percent
impervious cover (1p0s) which is less than or eq,ual to the average land
covei condition \ was hed]
post % 0 !� Iwatershed %
® 5D -6
E
NY A Situation 2: This consists of land development where the existing percent impervious
cover (iexisting) is less than or N gal to the average land cover condition
(Iwatershe,) and the proposed improvements will create a total percent
impervious cover (I ,,) which is greater than the average land cover
condition (1,xateshed]•
,existing din < Iwatershed OA; and
post '/Q > 'watershed ��
Situation 3: This consists of land development where the existing percent impervious
cover (1e .js,�,g) is greater than the average land cover condition (I.t,.h,j.
/ ,existing / > � watershed I %
`! Situation 4: This consists of land development where the existing percent impervious
cover (Iexisting) is served by an existing stormwater management BMP(s)
that addresses water quality.
If the proposed development meets the criteria for development Situation 1, than the low
density development is considered to be the BMP and no pollutant removal is required.
The calculation procedure for Situation 1 stops here. If the proposed development meets
the criteria for development Situations 2, 3, or 4, then proceed to STEP 4 on the
appropriate worksheet.
1 ® 5D -7
Ul
Worksheet 3 : Situation 3
Page 1 of 5
Summary of Situation 3 criteria: from calculation procedure STET' 1 thru STEPS, Worksheet 1:
Applicable area (A)* = I 46'8 acres
IPn,t = (total post- development impervious cover - A) x 100 = Z %
Iwatershed or lwatershed = 16%
Iezisting = (total existing impervious cover - A *) x 100 = 26. 4 %
'existing 'Z 6. 4 ern J ktershed ' b %
STEP 4 Determine the relative pre - development pollutant load (Lpre)•
1. Pre - development pollutant load based on the existing impervious cover:
Lpre(existing) ='0.05 + (0.009 x I,,isting)] x A x 2.28 (Equation 5 -17
where: Line(existing) = . relative pre - development total phosphorous load (pounds per year)
lexisting = existing site impervious cover (percent expressed in whole
numbers)
A = applicable area (acres)
Lpre(existing) _ [0.05 + (0.009 x z8, 4 )] x 1 46,8 x 2.28
0 2.3 pounds per year
5D -13
PERFOPiMANCE—BASEDW.kTER�OUALITY
OKV 0-7 116
® �D
Worksheet 7 : Situation SECTION
Page 2 of 5
2. Pre - development pollutant load based on the average land cover condition:
Lpre(watershed) _ [0.05 + (0.009 x Iwatersnea)] x A x 2.28 (Equation 5 -16)
where: Lpre(watershed) = relative pre- development total phosphorous load (pounds per year)
lwatershed = average land cover condition for specific watershed or locality nr
the Chesapeake Bay default value of 16% (percent expressed in
whole numbers)
A = applicable area (acres)
Lpre("tenhed) _ [0.05 + (0.009 x b )] x 14 6 $ x 2.28
--(04.9 pounds per year
STEP 5 Determine the relative post - development pollutant load (Lpos).
Lpost = [0.05 + (0:009 x 'pos)] x A x 2.28 (Equation 5 -21)
® where: Lp., = relative post- development total phosphorous load (pounds per
year)
'post = post - development percent impervious cover (percent expressed in
whole numbers)
A = applicable area (acres)
r
L 1
Lpost = [0.05 + (0.009 x 2 8 4 )] x 146 , 8 x 2.28
dZ 3 pounds per year
STEP 6 Determine the relative pollutant removal requirement (RR).
RR = Lpost (0.9 x Lp.(..isting))
= 10Z. 3 _ (0.9 x 1��'3) = 1 �' 2 pounds per year
Dr
RR = Lpast — Lpre(watershed)
102.3 _ 614.9 31st' pounds per year
5D -14
i
C�
The pollutant removal requirement (RR) for Situation 3 is the lesser of the two values calculated
above: IT IS THE INTENT TO UTILIZE -
RR = 3� , y pounds per year NOTE
EXI671n11, aNPS To THEIR FULL TENT
IN ME>:TIN(r WATERSHED LOgD coNDITIONS,
STEP 7 Identify best management practice (BMP) for the site.
1. Determine the required pollutant removal efficiency for the site:
EFF = (RR - LPO,) x 100
(Equation 5 -22)
where: EFF = required pollutant removal efficiency (percent expressed in whole
numbers)
RR = pollutant removal requirement (pounds per year)
LPOa = relative post- development total phosphorous load (pounds per
year)
EFF = ( 31- 4 _ 107 "S ) x 100
3G,(0
2. Select BMT(s) from Table 5 -15 and locate on the site:
BMP 1: VE(GETATIVE FILTER STRIP EFF = 10 %� € EXISTIN
BMP 2: EXTENDED DETENTION BASIN (EFF r 35%) � EX ISTI N G
® 5D -15
E
E
U
PERFORMANCE -BASED WATER QUALITY CALCULATIONS.; APPENDIX 5D
OKV 0111 (0
S�c1toN ' D�
Worksheet 3 : Situation 3
Page 4 of 5
3. Determine the pollutant load entering the proposed BNIP(s):
LBW = [0.05 + (0.009 x IBS)] x A x 2.28 , (Equation 5 -23)
where: LBMe = relative post- development total phosphorous load entering
proposed BMP (pounds per year)
IBi,,B, = post - development percent impervious cover of BNIP drainage area
(percent expressed in whole numbers)
A = drainage area of proposed BMP (acres)
1,13w1 = [0.05 + (0.009 x 2$ )] x 14b,0 x 2.28 LOCATION (,QASS SHuIDER AtJI�
tir 102, 3 SAFETY AREAS ADJN -EW Tb Au-
pounds per year AIRrIOuO PAMMENT.
LBMPZ = 10.05 + (0.009 x 20, 4 )] x
= l o'L . 3 pounds per year
LBO; = [0.05 + (0.009 x )] x
pounds per year
1 46.$ x 2.28 f LOCATION : OU7FALL #13,
OFFSITE ® STRaTuRE E 164
x 2.28
4. Calculate the pollutant load removed by the proposed BNIP(s):
Lremoved = Eff.. x LBNv
(Equation 5 -24)
where: Lremoved = Post - development pollutant load removed by proposed BNIP
(pounds per year)
EffB�,B, = pollutant removal efficiency of BMP (expressed in decimal form)
LB, = relative post - development total phosphorous load entering
proposed BNIP (pounds per year)
°
LremovedBMP1 — 1 c2, 3 x I l? IL) = ) U. -L pounds per year
102, 3 x 35 6/0 = 35 • a
I:remuvedBMPZ = pounds per year
LremovedBMH = x = pounds per year
5D -16
E
U
Ul
PERFORMANCE-BASED, WATER QUALITY CALCULATIONS �APPENDIX'51)�
OKv 01116
SECTION 'Dt
Worksheet 3 : Situation 3
Page 5 of 5
5. Calculate the total pollutant load removed by the BMP(s):
Lremoved/toW — Lmmoved/BNPI + LmmovedAWK + L'removedMNT3 +' ' ' (Equation 5 -25)
where: Lremovemmtat — total pollutant load removed by proposed BMPs
L'removedBNTI — pollutant load removed by proposed BMP No. 1
I'removedBMe2 — pollutant load removed by proposed BMP No. 2
LremovedBNT3 — pollutant load removed by proposed BMP No. 3
_ 10,z 35,13
L'removed/total + + +'
H10.0 pounds per year
6. Verify compliance:
Lremoved/total 2 RR
. "rFA
®
WINCHESTER RUNWAY AIRPORT
WINCHESTER REGIONAL AIRPORT
Dre mege Area= acres
WINCHESTER, VIRGINIA
2,044 CY
AIP PROJECT NO. 351 -0059 -24
2,044 CY
DELTA PROJECT NO. VA 07116
DATE November 24, 2010
Basin Volume Design
Area SF
Dre mege Area= acres
Wet Minimum Required Vol=
2,044 CY
Dry Minimum Required Vol=
2,044 CY
Min. Vol. before Cleanout=
1,007 CY
Elevation of Riser = '69732 feet
Volume at Riser=
4,087 CY
Dry Volume Provided
2,043 CY
Elevation of Dowate —
694.49 feet
Wet Volume Provided =
2,044 CY
Elevation of Cleanout=
69240 feet
Volume at Cleanout=
1,007 CY
Distance below top of nser=
492 feet
Design of Spillway
Area SF
Cto``l for grass =. 'x0,3
GcoefSCent for pavement=
0.91
Grass Area = r t-
465 SF
Impervious Area=
6:OISF
CA=
12.8
Time of Concentration -
min
2I
Rainfall intensity 2yr -�
2iUr
Rainfall intensity 25yr =p
inmr
3be
IJ3 6153:
5ofs
Sediment Basin 1
" Must be at least 695 75 feet
Basin Volume
Elev
Area SF
Vol. C
Riser
Dewater
lCl.ar.ut
SAl688:40
t - di
15689.00
14:353 337:
37
x690.00
IJ3 6153:
213
M 159TIM
AsIO8,650:
487
P-St69200
P 10,387.`
839
55693.00
;xaa12,2967,
1.260
692.40
1M69400
3i"3614p771
1,765
�69500
picti 0473
2,339
694.49
R'69600"A19,627i
3,018
V2697.00
b 122.5M6
3,800
d12698.00
(➢1258485
4,697
691
446699Wita
94174
5,720
Tii70000
KxTJ 336701
6889
1700 50
'33.670!
7 512
?iRS
�&
Pipe Soillwav
Emergency Spillway(YM)9 MYM'
Min. Pipe Spillway Capacty= 31 cts
Top of Water Elevation= ':.,g698�Ofeet
Head= 1.18 feet
®
Barrel D Length= r fBamel Diameter= 0 inch "Mst be less Nan 145 inch
Barrel N- value= CMP025RCP 0013
Barrel Invert In Elev. _ 0 feel
Barrel Invert Out Elev.= J feel
Barrel Capacity= 86 cis
Riser Diameter 48 inch
Riser Capacity= 50 off,
Order Capacity= 50 ofs
Is Capi x Min 9 Y
Trash Rack Dewatering Device
Trash Rack Diameter= 72 inch Maximum Flow= 2.55 as
Trash Rack Thickness= 16 gage Dia. of Dowatenng Oritice= 7 inch
Trash Rack Height= 21 inch Dia. of Flexible Tubing= 9 inch
Minimum Size Support Bar = 1 -114" pipe or 1- 1/4x1- 1/4x1/4 angle
Minimum Top Thickness = 14 ga. (C), 10 ga. (F)
Stifener= No Stiffener
Emmal Spillway Dearth
Emergency Spillway Fid. (Q) = 62 ofs
Spillway Bottom Width (B) ''fx+,el61 feet
Depth thru Channel (Hp) _'1'{y' 0, 7] feet
Design Elevations
Bottom Elev= 684.80 feet
Cleanout Elev= 69240 feet
Riser Crest= 697.32 feet
Design High Water= 698.50 feet
Top of Dam = , 76 .Wlfeet
C
" Note'. This atltlitional Flow Capacity provided by
existing Oil (Structure E 107) with Outlet Protection.
Min eleva5cn is 699.5 feet
12/3/2010 3:46 PM
® SEDIMENT TRAP DESIGN CALCULATIONS
REHABILITATE RUNWAY 14 -32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3 -51- 0059 -24
DELTA PROJECT NO. VA 07116
DATE: September 9, 2010
Sediment Trap ST -1
DRAINAGE AREA= 2.85 AC
TOTALSTORAGE=
WET/ DRY STORAGE REQ'D =
WIDTH =
LENGTH=
SIDE SLOPES =
EMBANKMENT TOP WIDTH =
BOTTOM ELEV =
®WET STORAGE ELEV =
DRY STORAGE ELEV =
TOP ELEV =
E
LENGTH OF STONE FILTER =
WET VOLUME PROVIDED =
DRY VOLUME PROVIDED =
TOTAL VOLUME PROVIDED =
2.85 AC x 134 CY / AC = 381.9 CY
191 CY (EACH)
30 FT
60 FT LENGTH TO WIDTH RATIO = OK
2:1
2.5 FT CHECK PLATE 3.13 -1
709.0
711.3 ELEV. AT BASE OF STONE FILTER
713.0 ELEV. AT TOP OF STONE FILTER
714.0
2.85 AC x 6 FT / AC = 17 ft
192.2 CY OK
195.5 CY OK
387.7 CY OK
N: \07116 \03 Project Data \Design \Drainage \07116 Sediment Traps 2/27
12/3/2010 3:46 PM
® SEDIMENT TRAP DESIGN CALCULATIONS
REHABILITATE RUNWAY 14 -32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3- 51- 0059 -24
DELTA PROJECT NO. VA 07116
DATE: September 9, 2010
Sediment Trap ST - 2
DRAINAGE AREA= 2.87 AC
TOTALSTORAGE=
WET/ DRY STORAGE REQ'D =
WIDTH
LENGTH=
SIDE SLOPES =
EMBANKMENT TOP WIDTH =
®BOTTOM ELEV =
WET STORAGE ELEV =
DRY STORAGE ELEV =
TOP ELEV =
11
LENGTH OF STONE FILTER =
WET VOLUME PROVIDED =
DRY VOLUME PROVIDED =
TOTAL VOLUME PROVIDED =
2.87 AC X 134 CY / AC = 384.6 CY
192 CY (EACH)
30 FT
60 FT LENGTH TO WIDTH RATIO = OK
2:1
2.5 FT CHECK PLATE 3.13 -1
714.0
716.3 ELEV. AT BASE OF STONE FILTER
718.0 ELEV. AT TOP OF STONE FILTER
719.0
2.87 AC X 6 FT / AC = 17 ft
192.2 CY OK
195.5 CY OK
387.7 CY OK
N: \07116 \03 Project Data \Design \Drainage \07116 Sediment Traps 3/27
12/3/2010 3:46 PM
® SEDIMENT TRAP DESIGN CALCULATIONS
REHABILITATE RUNWAY 14 -32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3 -51- 0059 -24
DELTA PROJECT NO. VA 07116
DATE: September 9, 2010
Sediment Trap ST - 3
DRAINAGE AREA= 2.87 AC
TOTALSTORAGE=
WET/ DRY STORAGE REQ'D =
WIDTH =
LENGTH=
SIDE SLOPES =
EMBANKMENT TOP WIDTH =
BOTTOM ELEV =
®WET STORAGE ELEV =
DRY STORAGE ELEV =
TOP ELEV =
u
LENGTH OF STONE FILTER =
WET VOLUME PROVIDED =
DRY VOLUME PROVIDED =
TOTAL VOLUME PROVIDED =
2.87 AC x 134 CY / AC = 384.6 CY
192 CY (EACH)
30 FT
60 FT LENGTH TO WIDTH RATIO = OK
2:1
2.5 FT CHECK PLATE 3.13 -1
715.0
717.3 ELEV. AT BASE OF STONE FILTER
719.0 ELEV. AT TOP OF STONE FILTER
720.0
2.87 AC x 6 FT / AC = 17 ft
192.2 CY OK
195.5 CY OK
387.7 CY OK
N: \07116 \03 Project Data \Design \Drainage \07116 Sediment Traps 4/27
12/312010 3:46 PM
® SEDIMENT TRAP DESIGN CALCULATIONS
REHABILITATE RUNWAY 14 -32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3 -51- 0059 -24
DELTA PROJECT NO. VA 07116
DATE: September 9, 2010
Sediment Trap ST - 5
DRAINAGE AREA= 2.87 AC
TOTALSTORAGE=
WET/ DRY STORAGE REQ'D =
WIDTH =
LENGTH=
SIDE SLOPES =
EMBANKMENT TOP WIDTH =
BOTTOM ELEV =
®WET STORAGE ELEV =
DRY STORAGE ELEV =
TOP ELEV =.
E
LENGTH OF STONE FILTER =
WET VOLUME PROVIDED =
DRY VOLUME PROVIDED =
TOTAL VOLUME PROVIDED =
2.87 AC x 134 CY / AC = 384.6 CY
192 CY (EACH)
30 FT
60 FT LENGTH TO WIDTH RATIO = OK
2:1
2.5 FT CHECK PLATE 3.13 -1
713.0
715.3 ELEV. AT BASE OF STONE FILTER
717.0 ELEV. AT TOP OF STONE FILTER
718.0
2.87 AC x 6 FT / AC = 17 ft
192.2 CY OK
195.5 CY OK
387.7 CY OK
N: \07116 \03 Project Data \Design \Drainage \07116 Sediment Traps 5127
12/3/2010 3:46 PM
® SEDIMENT TRAP DESIGN CALCULATIONS
REHABILITATE RUNWAY 14 -32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3- 51- 0059 -24
DELTA PROJECT N0, VA 07116
DATE: September 9, 2010 _
Sediment Trap ST - 5
DRAINAGE AREA= 2.87 AC
TOTALSTORAGE=
WET/ DRY STORAGE REQ'D =
WIDTH =
LENGTH=
SIDE SLOPES =
EMBANKMENT TOP WIDTH =
®BOTTOM ELEV =
WET STORAGE ELEV =
DRY STORAGE ELEV =
TOP ELEV =
LENGTH OF STONE FILTER =
Cl
WET VOLUME PROVIDED =
DRY VOLUME PROVIDED =
TOTAL VOLUME PROVIDED =
2.87 AC X 134 CY/AC = 384.6 CY
192 CY (EACH)
30 FT
60 FT LENGTH TO WIDTH RATIO = OK
2:1
2.5 FT CHECK PLATE 3.13 -1
711.0
713.3 ELEV. AT BASE OF STONE FILTER
715.0 ELEV. AT TOP OF STONE FILTER
716.0
2.87 AC X 6 - FT / AC = 17 ft
192.2 CY OK
195.5 CY OK
387.7 CY OK
N: \07116 \03 Project Data \Design \Drainage \07116 Sediment Traps 6/27
12/3/2010 3:46 PM
® SEDIMENT TRAP DESIGN CALCULATIONS
REHABILITATE RUNWAY 14 -32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3 -51- 0059 -24
DELTA PROJECT NO. VA 07116
DATE: September 9, 2010
Sediment Trap ST - 6
DRAINAGE AREA= 2.87 AC
TOTALSTORAGE=
WET/ DRY STORAGE REQ'D =
WIDTH =
LENGTH=
SIDE SLOPES =
EMBANKMENT TOP WIDTH =
BOTTOM ELEV =
®WET STORAGE ELEV =
DRY STORAGE ELEV =
TOP ELEV =
L J
LENGTH OF STONE FILTER =
WET VOLUME PROVIDED =
DRY VOLUME PROVIDED =
TOTAL VOLUME PROVIDED =
2.87 AC X 134 CY / AC = 384.6 CY
192 CY (EACH)
30 FT
60 FT LENGTH TO WIDTH RATIO = OK
2:1
2.5 FT CHECK PLATE 3.13 -1
707.0
709.3 ELEV. AT BASE OF STONE FILTER
711.0 ELEV. AT TOP OF STONE FILTER
712.0
2.87 AC X
192.2 CY OK
195.5 CY OK
387.7 CY OK
6 FT /AC= 17 ft
N: \07116 \03 Project Data \Design \Drainage \07116 Sediment Traps 7127
12/3/2010 3:46 PM
® SEDIMENT TRAP DESIGN CALCULATIONS
REHABILITATE RUNWAY 14 -32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3 -51- 0059 -24
DELTA PROJECT NO, VA 07116
DATE: September 9, 2010
Sediment Trap ST - 7
DRAINAGE AREA= 2.87 AC
TOTALSTORAGE=
WET/ DRY STORAGE REQ'D =
WIDTH =
LENGTH=
SIDE SLOPES =
EMBANKMENT TOP WIDTH =
BOTTOM ELEV =
®WET STORAGE ELEV =
DRY STORAGE ELEV =
TOP ELEV =
E J
LENGTH OF STONE FILTER =
WET VOLUME PROVIDED =
DRY VOLUME PROVIDED =
TOTAL VOLUME PROVIDED =
2.87 AC X 134 CY / AC = 384.6 CY
192 CY (EACH)
30 FT
60 FT LENGTH TO WIDTH RATIO = OK
2:1
2.5 FT CHECK PLATE 3.13 -1
703.0
705.3 ELEV. AT BASE OF STONE FILTER
707.0 ELEV. AT TOP OF STONE FILTER
708.0
2.87 AC X 6 FT / AC = 17 ft
192.2 CY OK
195.5 CY OK
387.7 CY OK
NA07116\03 Project Data \Design \Drainage \07116 Sediment Traps 8/27
12/3/2010 3:46 PM
® SEDIMENT TRAP DESIGN CALCULATIONS
REHABILITATE RUNWAY 14 -32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3 -51- 0059 -24
DELTA PROJECT NO. VA 07116
DATE:
September 9, 2010
Sediment Trap ST - 8
DRAINAGE AREA=
2.87 AC
TOTAL STORAGE=
2.87 AC x 134 CY/AC = 384.6 CY
WET/ DRY STORAGE REQ'D =
192 CY (EACH)
WIDTH =
30 FT
LENGTH=
60 FT LENGTH TO WIDTH RATIO = OK
SIDE SLOPES =
2 :1
EMBANKMENT TOP WIDTH =
2.5 FT CHECK PLATE 3.13 -1
BOTTOM ELEV =
700.0
STORAGE ELEV =
702.3 ELEV. AT BASE OF STONE FILTER '
®WET
DRY STORAGE ELEV =
704.0 ELEV. AT TOP OF STONE FILTER
TOP ELEV =
705.0
LENGTH OF STONE FILTER =
2.87 AC X 6 FT/AC= 17 ft
WET VOLUME PROVIDED =
192.2 CY OK
DRY VOLUME PROVIDED =
195.5 CY OK
TOTAL VOLUME PROVIDED =
387.7 CY OK
ul
N: \07116 \03 Project Data \Design \Drainage \07116 Sediment Traps 9/27
12/3/2010 3:46 PM
® SEDIMENT TRAP DESIGN CALCULATIONS
REHABILITATE RUNWAY 14.32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3 -51- 0059 -24
DELTA PROJECT NO. VA 07116
DATE:
September 9, 2010
Sediment Trap ST - 9
DRAINAGE AREA=
2.87 AC
TOTAL STORAGE=
2.87 AC X 134 CY / AC = 384.6 CY
WET/ DRY STORAGE REQ'D =
192 CY (EACH)
WIDTH =
30 FT
- LENGTH=
60 FT LENGTH TO WIDTH RATIO = OK
SIDE SLOPES =
2 :1
EMBANKMENT TOP WIDTH =
2.5 FT CHECK PLATE 3.13 -1
BOTTOM ELEV =
697.0
®WET STORAGE ELEV =
699.3 ELEV. AT BASE OF STONE FILTER
DRY STORAGE ELEV =
701.0 ELEV. AT TOP OF STONE FILTER
TOP ELEV =
702.0
LENGTH OF STONE FILTER =
2.87 AC X 6 FT/AC= 17 ft
WET VOLUME PROVIDED =
192.2 CY OK
DRY VOLUME PROVIDED =
195.5 CY OK
TOTAL VOLUME PROVIDED =
387.7 CY OK
11
N: \07116 \03 Project Data \Design \Drainage \07116 Sediment Traps 10/27
1202010 3:46 PM
® SEDIMENT TRAP DESIGN CALCULATIONS
REHABILITATE RUNWAY 14.32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3 -51- 0059 -24
DELTA PROJECT NO. VA 07116
DATE: September 9, 2010
Sediment Trap ST -10
DRAINAGE AREA= 2.87 AC
TOTALSTORAGE=
WET/ DRY STORAGE REQ'D =
WIDTH =
LENGTH=
SIDE SLOPES =
EMBANKMENT TOP WIDTH =
BOTTOM ELEV =
®WET STORAGE ELEV =
DRY STORAGE ELEV =
TOP ELEV =
\J
LENGTH OF STONE FILTER =
WET VOLUME PROVIDED =
DRY VOLUME PROVIDED =
TOTAL VOLUME PROVIDED =
2.87 AC x 134 CY / AC = 384.6 CY
192 CY (EACH)
30 FT
60 FT LENGTH TO WIDTH RATIO = OK
2:1
2.5 FT CHECK PLATE 3.13 -1
699.0
701.3 ELEV. AT BASE OF STONE FILTER
703.0 ELEV. AT TOP OF STONE FILTER
704.0
2.87 AC x 6 FT / AC = 17 ft
192.2 CY OK
195.5 CY OK
387.7 CY OK
N: \07116 \03 Project Data \Design \Drainage \07116 Sediment Traps 1 11/27
12/3/2010 3:46 PM
® SEDIMENT TRAP DESIGN CALCULATIONS
REHABILITATE RUNWAY 14.32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
I
AIP PROJECT NO. 3 -51- 0059 -24
DELTA PROJECT NO.. VA 07116
DATE: September 9, 2010
Sediment Trap ST - 11
DRAINAGE AREA= 2.35 AC
TOTALSTORAGE=
WET/ DRY STORAGE REQ'D =
WIDTH =
LENGTH=
SIDE SLOPES =
EMBANKMENT TOP WIDTH =
BOTTOM ELEV =
WET STORAGE ELEV =
DRY STORAGE ELEV =
TOP ELEV =
LENGTH OF STONE FILTER =
WET VOLUME PROVIDED =
DRY VOLUME PROVIDED =
TOTAL VOLUME PROVIDED =
2.35 AC X 134 cY / AC = 314.9 CY
157 CY (EACH)
30 FT
60 FT LENGTH TO WIDTH RATIO = OK
2:1
2.5 FT CHECK PLATE 3.13 -1
690.0
692.3 ELEV. AT BASE OF STONE FILTER
694.0 ELEV. AT TOP OF STONE FILTER
695.0
2.35 AC X 6 FT / AC = 14 ft
192.2 CY OK
195.5 CY OK
387.7 CY OK
N: \07116 \03 Project Data \Design \Drainage \07116 Sediment Traps - 12/27
12/3/2010 3:46 PM
® SEDIMENT TRAP DESIGN CALCULATIONS
REHABILITATE RUNWAY 14 -32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3 -51- 0059 -24
DELTA PROJECT NO. VA 07116
DATE: September 9, 2010
Sediment Trap ST -12
DRAINAGE AREA= 2.15 AC
TOTALSTORAGE=
WET/ DRY STORAGE REQ'D =
WIDTH =
LENGTH=
SIDE SLOPES =
EMBANKMENT TOP WIDTH =
BOTTOM ELEV =
®WET STORAGE ELEV =
DRY STORAGE ELEV =
TOP ELEV =
is
LENGTH OF STONE FILTER =
WET VOLUME PROVIDED =
DRY VOLUME PROVIDED =
TOTAL VOLUME PROVIDED =
2.15 AC x 134 CY / AC = 288.1 CY
144 CY (EACH)
30 FT
60 FT LENGTH TO WIDTH RATIO = OK
2:1
2.5 FT CHECK PLATE 3.13 -1
713.0
715.3 ELEV. AT BASE OF STONE FILTER
717.0 ELEV. AT TOP OF STONE FILTER
718.0
2.15 AC 6 FT /AC= 13 ft
192.2 CY OK
195.5 CY OK
387.7 CY OK
N: \07116 \03 Project Data \Design \Drainage \07116 Sediment Traps 13/27
12/312010 3:46 PM
® SEDIMENT TRAP DESIGN CALCULATIONS
REHABILITATE RUNWAY 14.32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3 -51- 0059 -24
DELTA PROJECT NO. VA 07116
DATE: September 9, 2010
Sediment Trap ST -13
DRAINAGE AREA= 2.15 AC
TOTALSTORAGE=
WET/ DRY STORAGE REQ'D =
WIDTH =
LENGTH=
SIDE SLOPES =
EMBANKMENT TOP WIDTH =
BOTTOM ELEV =
®WET STORAGE ELEV =
DRY STORAGE ELEV =
TOP ELEV =
LENGTH OF STONE FILTER =
WET VOLUME PROVIDED =
DRY VOLUME PROVIDED =
TOTAL VOLUME PROVIDED =
2.15 AC X 134 CY/AC= 288.1 CY
144 CY (EACH)
30 FT
60 FT LENGTH TO WIDTH RATIO = OK
2:1
2.5 FT CHECK PLATE 3.13 -1
713.0
715.3 ELEV. AT BASE OF STONE FILTER
717.0 ELEV. AT TOP OF STONE FILTER
718.0
2.15 AC 6 FT /AC= 13 ft
192.2 CY OK
195.5 CY OK
387.7 CY OK
N: \07116 \03 Project Data \Design \Drainage \07116 Sediment Traps 14/27
12/3/2010 3:46 PM
® SEDIMENT TRAP DESIGN CALCULATIONS
REHABILITATE RUNWAY 14 -32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3 -51- 0059 -24
DELTA PROJECT NO. VA 07116
DATE: September 9, 2010
Sediment Trap ST - 14
DRAINAGE AREA= 2.07 AC
TOTALSTORAGE=
WET/ DRY STORAGE REQ'D =
WIDTH =
LENGTH =
SIDE SLOPES =
EMBANKMENT TOP WIDTH =
®BOTTOM ELEV =
WET STORAGE ELEV =
DRY STORAGE ELEV =
TOP ELEV =
LENGTH OF STONE FILTER =
WET VOLUME PROVIDED =
DRY VOLUME PROVIDED =
TOTAL VOLUME PROVIDED =
2.07 AC X 134 CY/AC= 277.4 CY
139 CY (EACH)
30 FT
60 FT LENGTH TO WIDTH RATIO = OK
2:1
2.5 FT CHECK PLATE 3.13 -1
693.0
695.3 ELEV. AT BASE OF STONE FILTER
697.0 ELEV. AT TOP OF STONE FILTER
698.0
2.07 AC X 6 FT / AC = 12 ft
192.2 CY OK
195.5 CY GK
387.7 CY OK
N:\07116 \03 Project Data \Design \Drainage \07116 Sediment Traps - 15/27
12/3/2010 3:46 PM
® SEDIMENT TRAP DESIGN CALCULATIONS
REHABILITATE RUNWAY 14 -32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3 -51- 0059 -24
DELTA PROJECT NO. VA 07116
DATE: September 9, 2010
Sediment Trap ST - 15
DRAINAGE AREA= 2.07 AC
TOTALSTORAGE=
WET/ DRY STORAGE REQ'D =
WIDTH =
LENGTH=
SIDE SLOPES =
EMBANKMENT TOP WIDTH =
®BOTTOM ELEV =
WET STORAGE ELEV =
DRY STORAGE ELEV =
TOP ELEV =
11
LENGTH OF STONE FILTER =
WET VOLUME PROVIDED =
DRY VOLUME PROVIDED =
TOTAL VOLUME PROVIDED =
2.07 AC X 134 CY / AC = 277.4 CY
139 CY (EACH)
30 FT
60 FT LENGTH TO WIDTH RATIO = OK
2:1
2.5 FT CHECK PLATE 3.13 -1
691.0
693.3 ELEV. AT BASE OF STONE FILTER
695.0 ELEV. AT TOP OF STONE FILTER
696.0
2.07 AC X 6 FT / AC = 12 ft
192.2 CY OK
195.5 CY OK
387.7 CY OK
N: \07116 \03 Project Data \Design \Drainage \07116 Sediment Traps 16/27
12/3/2010 3:46 PM
® SEDIMENT TRAP DESIGN CALCULATIONS
REHABILITATE RUNWAY 14 -32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3 -51- 0059 -24
DELTA PROJECT NO. VA 07116
DATE: September 9, 2010
Sediment Trap ST -16
DRAINAGE AREA= 2.07 AC
TOTAL STORAGE= 2.07 AC X 134 CY/AC= 277.4 CY
WET/ DRY STORAGE REQ'D =
WIDTH =
LENGTH=
SIDE SLOPES =
EMBANKMENT TOP WIDTH;
BOTTOM ELEV =
®WET STORAGE ELEV =
DRY STORAGE ELEV =
TOP ELEV =
C
LENGTH OF STONE FILTER =
WET VOLUME PROVIDED =
DRY VOLUME PROVIDED =
TOTAL VOLUME PROVIDED =
139 CY (EACH)
30 FT
60 FT LENGTH TO WIDTH RATIO = OK
2:1
2.5 FT CHECK PLATE 3.13 -1
691.0
693.3 ELEV. AT BASE OF STONE FILTER
695.0 ELEV. AT TOP OF STONE FILTER
696.0
2.07 AC X 6 FT / AC = 12 ft
192.2 CY OK
195.5 CY OK
387.7 CY OK
N: \07116 \03 Project Data \Design \Drainage \07116 Sediment Traps 17/27
12/3/2010 3:46 PM
® SEDIMENT TRAP DESIGN CALCULATIONS
REHABILITATE RUNWAY 14 -32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
is
AIP PROJECT NO. 3 -51- 0059 -24
DELTA PROJECT NO. VA 07116
DATE: November 22, 2010
Sediment Trap ST - 17
DRAINAGE AREA= 2.90 AC
TOTALSTORAGE=
WET/ DRY STORAGE REQ'D =
WIDTH =
LENGTH=
SIDE SLOPES =
EMBANKMENT TOP WIDTH =
BOTTOM ELEV =
WET STORAGE ELEV =
DRY STORAGE ELEV =
TOP ELEV =
LENGTH OF STONE FILTER =
WET VOLUME PROVIDED =
DRY VOLUME PROVIDED =
TOTAL VOLUME PROVIDED =
2.90 AC x 134 CY/AC= 388.6 CY
194 CY (EACH)
30 FT
62 FT LENGTH TO WIDTH RATIO = OK
2:1
2.5 FT CHECK PLATE 3.13 -1
716.0
718.3 ELEV. AT BASE OF STONE FILTER
720.0 ELEV. AT TOP OF STONE FILTER
721.0
2.90 AC x 6 FT / AC = 17 ft
199.7 CY OK
199.3 CY OK
398.9 CY OK
N: \07116 \03 Project Data \Design \Drainage \07116 Sediment Traps 18/27
12/3/2010 3:46 PM
® SEDIMENT TRAP DESIGN CALCULATIONS
REHABILITATE RUNWAY 14 -32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3 -51- 0059 -24
DELTA PROJECT NO. VA 07116
DATE: November 22, 2010
Sediment Trap ST - 18
DRAINAGE AREA= 2.07 AC
TOTALSTORAGE=
WET/ DRY STORAGE REQ'D =
WIDTH =
LENGTH=
SIDE SLOPES =
EMBANKMENT TOP WIDTH =
BOTTOM ELEV =
®WET STORAGE ELEV =
DRY STORAGE ELEV =
TOP ELEV =
C
LENGTH OF STONE FILTER =
WET VOLUME PROVIDED =
DRY VOLUME PROVIDED =
TOTAL VOLUME PROVIDED =
2.07 AC X 134 CY / AC = 277.4 CY
139 CY (EACH)
20 FT
60 FT LENGTH TO WIDTH RATIO = OK
2:1
2.5 FT CHECK PLATE 3.13 -1
701.0
703.4 ELEV. AT BASE OF STONE FILTER
705.0 ELEV. AT TOP OF STONE FILTER
706.0
2.07 AC X 6 FT / AC = 12 ft
144.9 CY OK
142.1 CY OK
287.0 CY OK
N: \07116 \03 Project Data \Design \Drainage \07116 Sediment Traps - 19/27
E
12/3/2010 3:46 PM
SEDIMENT TRAP DESIGN CALCULATIONS
REHABILITATE RUNWAY 14 -32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3 -51- 0059 -24
DELTA PROJECT NO. VA 07116
DATE. November 22, 2010
Sediment Trap ST - 19
DRAINAGE AREA= 2.42 AC
TOTALSTORAGE=
WET/ DRY STORAGE REQ'D =
WIDTH =
LENGTH=
SIDE SLOPES =
EMBANKMENT TOP WIDTH =
BOTTOM ELEV =
WET STORAGE ELEV =
DRY STORAGE ELEV =
TOP ELEV =
LENGTH OF STONE FILTER =
WET VOLUME PROVIDED =
DRY VOLUME PROVIDED =
TOTAL VOLUME PROVIDED =
2.42 AC X 134 CY / AC = 324.3 CY
162 CY (EACH)
30 FT
60 FT LENGTH TO WIDTH RATIO = OK
2:1
2.5 FT CHECK PLATE 3.13 -1
709.0
711.3 ELEV. AT BASE OF STONE FILTER
713.0 ELEV. AT TOP OF STONE FILTER
714.0
2.42 AC X 6 FT / AC = 15 ft
192.2 CY OK
195.5 CY OK
387.7 CY OK
N: \07116 \03 Project Data \Design \Drainage \07116 Sediment Traps 20/27
12/3/2010 3:46 PM
® SEDIMENT TRAP DESIGN CALCULATIONS
REHABILITATE RUNWAY 14 -32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3 -51- 0059 -24
DELTA PROJECT NO. VA 07116
DATE: November22,2010
Sediment Trap ST - 20
DRAINAGE AREA=
TOTALSTORAGE=
WET/ DRY STORAGE REQ'D =
WIDTH =
LENGTH=
SIDE SLOPES =
EMBANKMENT TOP WIDTH =
BOTTOM ELEV =
®WET STORAGE ELEV =
DRY STORAGE ELEV =
TOP ELEV =
E
LENGTH OF STONE FILTER =
WET VOLUME PROVIDED =
DRY VOLUME PROVIDED =
TOTAL VOLUME PROVIDED =
1.90 AC
1.90 ACX
127 CY (EACH)
134 CY/AC= 254.6 CY
20 FT
55 FT LENGTH TO WIDTH RATIO = OK
2:1 ,
2.5 FT CHECK PLATE 3.13 -1
682.0
684.4 ELEV. AT BASE OF STONE FILTER
686.0 ELEV. AT TOP OF STONE FILTER
687.0
1.90 ACX 6 FT / AC = 11 ft
133.9 CY OK
132.4 CY OK
266.3 CY OK
N: \07116 \03 Project Data \Design \Drainage \07116 Sediment Traps 21/27
12/3/2010 3:46 PM
® SEDIMENT TRAP DESIGN CALCULATIONS
REHABILITATE RUNWAY 14 -32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3 -51- 0059 -24
DELTA PROJECT NO. VA 07116
DATE: November 22, 2010
Sediment Trap ST - 21
DRAINAGE AREA= 1.30 AC
TOTALSTORAGE=
WET/ DRY STORAGE REQ'D =
WIDTH =
LENGTH=
SIDE SLOPES =
EMBANKMENT TOP WIDTH =
BOTTOM ELEV =
WET STORAGE ELEV =
DRY STORAGE ELEV =
TOP ELEV =
LENGTH OF STONE FILTER =
WET VOLUME PROVIDED =
DRY VOLUME PROVIDED =
TOTAL VOLUME PROVIDED =
1.30 AC x 134 CY / AC = 174.2 CY
87 CY (EACH)
18 FT
36 FT LENGTH TO WIDTH RATIO = OK
2:1
2.5 FT CHECK PLATE 3.13 -1
680.0
682.5 ELEV. AT BASE OF STONE FILTER
684.0 ELEV. AT TOP OF STONE FILTER
685.0
1.30 AC x 6 FT / AC = 8 ft
87.2 CY OK
87.3 CY bK
174.5 CY OK
N: \07116 \03 Project Data \Design \Drainage \07116 Sediment Traps - 22/27
12/3/2010 3:46 PM
®
SEDIMENT TRAP DESIGN CALCULATIONS
REHABILITATE RUNWAY 14 -32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3 -51- 0059 -24
DELTA PROJECT N0, VA 07116
DATE:
November 22, 2010
Sediment Trap ST - 22
DRAINAGE AREA=
0.70 AC
TOTAL STORAGE=
0.70 AC X 134 CY/AC= 93.8 CY
WET/ DRY STORAGE REQ'D =
47 CY (EACH)
WIDTH =
12 FT
LENGTH=
24 FT LENGTH TO WIDTH RATIO = OK
SIDE SLOPES =
2 :1
EMBANKMENT TOP WIDTH =
2.5 FT CHECK PLATE 3.13 -1
BOTTOM ELEV =
691.0
®WET
STORAGE ELEV =
693.5 ELEV. AT BASE OF STONE FILTER
DRY STORAGE ELEV =
695.0 ELEV. AT TOP OF STONE FILTER
TOP ELEV =
696.0
LENGTH OF STONE FILTER =
0.70 AC X 6 FT/AC= 4 ft
WET VOLUME PROVIDED =
48.0 CY OK
DRY VOLUME PROVIDED =
51.9 CY OK
TOTAL VOLUME PROVIDED =
99.9 CY OK
C
N: \07116 \03 Project Data \Design \Drainage \07116 Sediment Traps 23/27
12/3/2010 3:46 PM
® SEDIMENT TRAP DESIGN CALCULATIONS
REHABILITATE RUNWAY 14 -32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3 -51- 0059 -24
DELTA PROJECT NO. VA 07116
DATE:
November 22, 2010
Sediment Trap ST - 22
DRAINAGE AREA=
1.05 AC
TOTAL STORAGE=
1.05 AC x 134 CY / AC = 140.7 CY
WET/ DRY STORAGE REQ'D =
70 CY (EACH)
WIDTH =
16 FT
LENGTH=
32 FT LENGTH TO WIDTH RATIO = OK
SIDE SLOPES =
2 :1
EMBANKMENT TOP WIDTH =
2.5 FT CHECK PLATE 3.13 -1
BOTTOM ELEV =
700.0
®WET STORAGE ELEV =
702.5 ELEV. AT BASE OF STONE FILTER
DRY STORAGE ELEV =
704.0 ELEV. AT TOP OF STONE FILTER
TOP ELEV =
705.0
LENGTH OF STONE FILTER =
1.05 AC x 6 FT / AC = 6 ft
WET VOLUME PROVIDED =
74.3 CY OK
DRY VOLUME PROVIDED =
73.0 CY OK
TOTAL VOLUME PROVIDED =
147.3 CY OK
CJ
N: \07116 \03 Project Data \Design \Drainage \07116 Sediment Traps 24/27
12/3/2010 3:46 PM
® SEDIMENT TRAP DESIGN CALCULATIONS
REHABILITATE RUNWAY 14 -32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3 -51- 0059 -24
DELTA PROJECT NO. VA 07116
DATE: November 22,2010
Sediment Trap ST - 22
DRAINAGE AREA= 2.17 AC
TOTALSTORAGE=
WET/ DRY STORAGE REQ'D =
WIDTH =
LENGTH=
SIDE SLOPES =
EMBANKMENT TOP WIDTH =
®BOTTOM ELEV =
WET STORAGE ELEV =
DRY STORAGE ELEV =
TOP ELEV =
LENGTH OF STONE FILTER =
WET VOLUME PROVIDED =
DRY VOLUME PROVIDED =
TOTAL VOLUME PROVIDED =
2.17 AC X 134 CY/AC = 290.8 CY
145 CY (EACH)
30 FT
60 FT LENGTH TO WIDTH RATIO = OK
2:1
2.5 FT CHECK PLATE 3.13 -1
698.0
700.4 ELEV. AT BASE OF STONE FILTER
702.0 ELEV. AT TOP OF STONE FILTER
703.0
2.17 AC X 6 FT / AC = 13 ft
202.5 CY OK
185.2 CY OK
387.7 CY OK
N: \07116 \03 Project Data \Design \Drainage \07116 Sediment Traps . 25/27
12/3/2010 3:46 PM
SEDIMENT TRAP DESIGN CALCULATIONS
REHABILITATE RUNWAY 14 -32
WINCHESTER REGIONAL AIRPORT
WINCHESTER, VIRGINIA
AIP PROJECT NO. 3 -51- 0059 -24
DELTA PROJECT NO. VA 07116
DATE: November 22, 2010
Sediment Trap ST - 22
DRAINAGE AREA= 2.42 AC
TOTALSTORAGE=
WET/ DRY STORAGE REQ'D =
WIDTH =
LENGTH=
SIDE SLOPES =
EMBANKMENT TOP WIDTH =
®BOTTOM ELEV =
WET STORAGE ELEV =
DRY STORAGE ELEV =
TOP ELEV =
J
LENGTH OF STONE FILTER =
WET VOLUME PROVIDED =
DRY VOLUME PROVIDED =
TOTAL VOLUME PROVIDED =
2.42 AC X 134 CY / AC = 324.3 CY
162 CY (EACH)
30 FT
60 FT LENGTH TO WIDTH RATIO = OK
2:1
2.5 FT CHECK PLATE 3.13 -1
694.0
696.4 ELEV. AT BASE OF STONE FILTER
698.0 ELEV. AT TOP OF STONE FILTER
699.0
2.42 AC X 6 FT / AC = 15 ft
202.5 CY OK
185.2 CY OK
387.7 CY OK
N:\07116 \03 Project Data \Design \Drainage \07116 Sediment Traps 26/27
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