1437 SOUTH BOULDER AVE., SUITE 1080 TULSA, OKLAHOMA 74119 918.392.5620 (P) 918.392.5621 (F) ...
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Transcript of 1437 SOUTH BOULDER AVE., SUITE 1080 TULSA, OKLAHOMA 74119 918.392.5620 (P) 918.392.5621 (F) ...
1437 SOUTH BOULDER AVE., SUITE 1080 TULSA, OKLAHOMA 74119 918.392.5620 (P) 918.392.5621 (F) WWW.MESHEKENGR.COM
Garnett Regional Detention Facility:
A Success Story In Managing NAI With Competing Interests
Brandon Claborn, P.E., CFM
CIT
Y O
F O
WA
SS
O, O
K Location – 11 Miles Northeast of
Tulsa, OK
Population– 1990 – 11,151
– 2000 – 18,502
– 2008 – 37,328
Recent Development– 2400 Residential Lots 2002-2009
– Annual Retail Sales:
– $200 Million in 2000
– $550 Million in 2007
RA
NC
H C
REEK
BA
SIN
DR
AIN
AG
E B
AS
IN Ranch Creek – Tributary A
344 Acres to Proposed Pond
19
94
1994
20
02
2002
20
04
2004
20
06
2006
20
08
2008
EX
ISTIN
G P
RO
BLEM
S Flooding Downstream of Site
GO
ALS
FO
R D
ETEN
TIO
N Reduce Flooding Downstream
Full Development Upstream
Remove Some Existing Ponds
Sell City Owned Property
Protect Wildlife Habitat
Enhance Quality of Life
CO
MP
TETIN
G IN
TER
ES
TS
Development versus Mitigation
USACOE versus OKDEQ & EPA
Construction Costs: Developer/City
Park versus Flood Control
Maintenance versus Wetland/Habitat
DEV
ELO
PM
EN
T
PR
ESS
UR
E 118 Acres of Undeveloped Property
FLO
OD
PLA
IN M
ITIG
ATIO
N Additional Competing Interests
More Frequent versus Less Frequent Floods
Frequency Existing Proposed Reduction1 169 160 6%2 270 210 22%5 480 295 39%10 590 330 44%25 750 390 48%50 845 815 4%100 960 745 22%500 1425 1390 2%
40%PMF 3800 3455 9%
Peak Flow Rate (cfs)
PER
MIT
TIN
G IS
SU
ES
CLOMR
404 Permit– On Site Meeting Prior to Design
– Second On Site Meeting – Initial Design
Individual 404 Permit Application– 100% On Site Mitigation
– 4:1 Ratio for Overall Wetland Habitat
401 Certification (OKDEQ)– Required Additional Off Site Mitigation
Cultural Resources Investigation
Oklahoma Historical Society
CO
NS
TR
UC
TIO
N C
OS
TS
Sell Existing Detention Facilities
Fee In Lieu of Detention
Additional City Planning Required
Negotiate Purchase of Property
GEN
ER
AL S
ITE IS
SU
ES
Neighborhood Meeting
Public Meeting During Design Phase– Local Residents Expectations
Coordination With City Departments– Upgrade Sanitary Sewer
– Maintenance Access
– Security (Police)
– Stormwater Quality
SU
MM
AR
Y/R
EC
OM
MEN
DATIO
NS
Floodplain Management – Developing With No Adverse Impact
– One Piece of the Puzzle
– Reducing Flooding Is the Easy Part
– Several Competing Interests
– Coordinate City Departments
– Comprehensive Planning Is Crucial
– Leverage Resources
– Work With Developers
– Identify Permitting Needs Early
1437 SOUTH BOULDER AVE., SUITE 1080 TULSA, OKLAHOMA 74119 918.392.5620 (P) 918.392.5621 (F) WWW.MESHEKENGR.COM
Questions?
Brandon Claborn, P.E. CFMProject Manager/Associate Principal