Item Q12BOARD OF COUNTY COMMISSIONERS
AGENDA ITEM SUMMARY
Meeting Date: June 21, 2006
Bulk Item: Yes No XX
Division: County Attorney
Staff Contact Person: Pedro Mercado
AGENDA ITEM WORDING:
Discussion of the stormwater fee the City of Key West is charging the Key West International Airport
and direction from the Commission on how the Commission wants the County Attorney to proceed.
ITEM BACKGROUND:
The City of Key West enacted a stormwater utility ordinance in 2002. KWIA commissioned two
engineering studies showing the fee the City was charging the County was excessive. The County has
met with City representatives on several occasions to try to resolve the disagreement over the
appropriate charge. Pursuant to the County's most recent attempt to resolve the dispute, the County
commissioned a drainage calculation study. The study has been completed and again shows the fees
being charged by the City are excessive.
PREVIOUS RELEVANT BOCC ACTION:
None.
CONTRACT/AGREEMENT CHANGES:
N/A
STAFF RECOMMENDATIONS:
N/A
TOTAL COST: N/A
COST TO COUNTY: N/A
REVENUE PRODUCING: Yes XX No
APPROVED BY: County Atty X
BUDGETED: Yes No
SOURCE OF FUNDS:
AMOUNT PER MONTH
OMB/Purchasing Risk Management
DIVISION DIRECTOR APPROVAL: �O D,6
A. N, COUN Y TTORNEY
DOCUMENTATION: Included XX Not Required.
DISPOSITION: AGENDA ITEM #
Revised 2/05
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tea:
PP9F V -_
KEY WEST INTERNATIONAL AIRPORT
STORM WATER MANAGEMENT
USER FEE ESflMATION
ProJea
Basin
ImpsrvlousI
Area
(with
inatnNni)ction)Ac.
ous
em)
bvwml-
Ana
(w4tho01
Ac.
TOW AM
censidsrad for
stormwater
Ac.
Ussr
Fes
$(MonthAUTOMOBILE
PARKING LOTS
A'! ,raa
1.19
0.00
0.98
122.24
RESURFACING TAMAYS AND APRON
Al A3 Ei E2
21.64
0.00
18A4
2245.39
RESURFAONG RUNWAY
22.52
1.58
20.24
2519.14
HANGAR DEVELOPMENT TA%ILANES AND APRONS
B1 AND PARIONG LOT
3.60
0.00
2.59
359.B4
EXISTING PORTION OF RUNWAY
A
0.00
2.11
2.11
262.80
IXISTING PORTION OF RUNWAY
D
0.00
2.110
2.80
348.48
IXISTINO OFRUNWAY
F
8.90
5.70
0.00
5.70
709.40
E)OSTING PORT70NOF RUNWAY
o.. 27 Ew
0.00
0.00
2.11
2.11
262.80
TOTAL
1 56.02
47.62
8.80
1 %22
B 998.50
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TABLE 4: WATER QUALITY SUMMARY (5 YEAR-24 HOUR STORK
!R, Ze 33
Basin
Minimum elevation at
which runoff exits basin
Time at which this
minimum elevation
is reached
Basin Storage Volume
at this minimum
elevation(AF)
Basin well discharge
volume at this
minimum elevation
t�
Total Basin
Retention
Volume (AF)
Required water
quality retention
volume (AF)
Al
2,25
11.7221
0.0870 ,
0.5442 %
0.6312
A2
-,35
11,764
0.0674
0.4333
0.5007
0.48
A3
2.3,0
11.742
0.2357
0.7625
0.9982
0.99
A4
2.55
11.797
0.0141
0.3186
0.3327
0.33
El
2,90
12.418
1.0908,
0.9087
1.9995
1.41
E2
2.20
11.850
0.1909
0.6464
0.8373
0.75
R.
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TABLE 2A: PRE -DEVELOPMENT AND POST -DEVELOPMENT BASIN CURVE NUMBER CALCULATIONS (BASIN: 94)
Conditions
Percent
Pervious Area
Average Pervious
Area Ground Elevation
Design Water
Table Elevation
Average Distance to
Water Table
Developed Avallable
Soil storag@
Weighted
Soil Storage
Basin Curve
Number
Existing Conditions
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1.5
1.00
0.6"
0.24
98
Proposed Conditions
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1.5
1.20
0.98"
021
98
TABLE 213: PRE -DEVELOPMENT AND POST -DEVELOPMENT BASIN CURVE NUMBER CALCULATIONS (BASIN : PARIUNO LOT)
Conditions
Percent
Pervious Area
Average Pervious
Ares Ground Elevation
Design Water
Table Elevation
Average Distance to
Water Table
Developad Ava9able
Soli storage
Weighted
Soil Storage
In Curve
Number
Existing Conditions
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2.8
1.5
1.30
1.17"
0.22
98
Proposed Conditions
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1.60
1.74"
0.16
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