supplemental swmp and bmp development...fsa workshop –sept 8, 2017 reconfigure wet detention pond...
TRANSCRIPT
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FSA Seminar 2017
Supplemental SWMP and BMP Development
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OVERVIEW
• Historical BMP’s used• Research• Structural BMP’s• Non-Structural BMP’s
SSUPPLEMENTAL
SWMPFSA Workshop – Sept 8, 2017
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HISTORICAL BMP’S
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CDSTM Unit and StormceptorsTM
SSUPPLEMENTAL
SWMPFSA Workshop – Sept 8, 2017
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2nd Generation Nutrient Separating Baffle Box
SSUPPLEMENTAL
SWMPFSA Workshop – Sept 8, 2017
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Inlet Baskets
SSUPPLEMENTAL
SWMPFSA Workshop – Sept 8, 2017
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Storm FloTM
SSUPPLEMENTAL
SWMPFSA Workshop – Sept 8, 2017
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SSUPPLEMENTAL
SWMPFSA Workshop – Sept 8, 2017
Reconfigure Wet Detention Pond
• *Phosphorusremoval efficiency increase from 20% to 67%
• Estimated loading into lake improvedfrom 81.4 kg/yrto 33.6 kg/yr
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Reconfiguration of FDOT Pond
• Headwaters of Howell Branch and Lake Jesup• FDOT drainage easement over entire pond• On private property (Country Club of Orlando)• City established agreement with FDOT• Special permission with golf course officials• Permits with DEP & SJRWMD• City equipment operators performed work• City compliance staff monitored turbidity
SSUPPLEMENTAL
SWMPFSA Workshop – Sept 8, 2017
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Spring Lake Pond (FDOT)Treats 141 acresTP reduction = 6.1 lbs/yrConstruction Cost ~ $375,000
Spring Lake Pond (FDOT)Treats 141 acresTP reduction = 6.1 lbs/yrConstruction Cost ~ $375,000
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Spring Lake Pond (FDOT)Spring Lake Pond (FDOT)
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Spring Lake Pond (FDOT)Spring Lake Pond (FDOT)
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Spring Lake Pond (FDOT)Spring Lake Pond (FDOT)
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SSUPPLEMENTAL
SWMPFSA Workshop – Sept 8, 2017
y = -0.0015x + 116.5005R² = 0.2907
y = -0.0038x + 209.69R² = 0.2256
0
10
20
30
40
50
60
70
80
90
100
TRO
PHIC
STA
TE IN
DEX
DATE
Long Term TSI
Current 10-Year TSI
TSI Trend (Long Term)
TSI Trend (Current 10 Years)
OLIGOTROPHIC
MESOTROPHIC
EUTROPHIC
HYPEREUTROPHIC
Trend / Regression Analysis(Significant = R2 > 0.20, Insignificant (No Trend) = R2 < 0.20)
Long Term Trend (Significant Improvement): R2 = 0.2907
Current 10-Year Trend (Significant Improvement): R2 = 0.2256
Spring Lake Trophic State Index (Jan 1989 – Jan 2017)
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SSUPPLEMENTAL
SWMPFSA Workshop – Sept 8, 2017
y = -0.0038x + 209.69R² = 0.2256
0
10
20
30
40
50
60
70
80
90
100
TRO
PHIC
STA
TE IN
DEX
DATE
Spring Lake Trophic State Index Trend (Jan 2007 - Jan 2017)
OLIGOTROPHIC
MESOTROPHIC
EUTROPHIC
HYPEREUTROPHIC
Trend / Regression Analysis(Significant = R2 > 0.20, Insignificant (No Trend) = R2 < 0.20)
Long Term Trend (Significant Improvement): R2 = 0.2907
Current 10-Year Trend (Significant Improvement): R2 = 0.2256
Dredged + BMP’s
Algae Bloom
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Average Concentrations (mg/l)Parameter Before Projects After Projects % Reduction
n=80 n=26
TP 0.064 0.033 48TN 1.152 0.967 16
NH3 0.041 0.012 71NO3 0.023 0.010 56TSS 8.26 5.42 34
Turbidity 5.8 2.9 50Chlor a (mg/m3) 32.2 13.8 57
Spring Lake (WBID 2997S) Water Quality Improvements
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ADDITIONAL RESEARCH
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LAKE SILVER TMDL RESEARCH
• Internal loading ?• Sediment analyses• Interstitial/pore water• Sediment-water interface• Bottom of water column
SSUPPLEMENTAL
SWMPFSA Workshop – Sept 8, 2017
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LS-6!
LS-5!
LS-4!
LS-3!
LS-2!LS-1
!
Lake Silver
¯Sources: Esri, HERE, DeLorme, Intermap, increment P Corp., GEBCO, USGS, FAO, NPS, NRCAN, GeoBase, IGN, Kadaster NL, Ordnance Survey, Esri Japan, METI, Esri China (Hong Kong), swisstopo, MapmyIndia, © OpenStreetMap contributors, and the GIS User Community
0 60 120 240 Meters
Sampling Event 1:
May 11, 20168:30 am to 3:00 pm
Calm windsAir temp: ~ 30°C
Collected:Hand-held electrode data Water column samples Sediment cores
14 ft7 ft
11 ft
24 ft
26 ft
23 ft
Future Sampling Events- July 27, 2016- October 2016
Beazley Laboratory – University of Central Florida
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!
LS-6!
LS-5!
LS-4
LS-3!
LS-2!LS-1
!
Lake Silver
Sources: Esri, HERE, DeLorme, Intermap, increment P Corp., GEBCO, USGS, FAO, NPS, NRCAN, GeoBase, IGN, Kadaster NL, Ordnance Survey, Esri Japan, METI, Esri China (Hong Kong), swisstopo, MapmyIndia, © OpenStreetMap contributors, and the GIS User Community
0 60 120 240 Meters
1 2
3
6
4
5
Sediment Total P
Total P mg/kgLS-1 957LS-2 361LS-3 1301LS-4 27,420LS-5 24,332LS-6 2906
LS-1 LS-2 LS-3 LS-4 LS-5 LS-60
10
20
30
40
50
TP (%
)
Site
Total Phosphorus (%)
Beazley Laboratory – University of Central Florida
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!
LS-6!
LS-5!
LS-4
LS-3!
LS-2!LS-1
!
Lake Silver
Sources: Esri, HERE, DeLorme, Intermap, increment P Corp., GEBCO, USGS, FAO, NPS, NRCAN, GeoBase, IGN, Kadaster NL, Ordnance Survey, Esri Japan, METI, Esri China (Hong Kong), swisstopo, MapmyIndia, © OpenStreetMap contributors, and the GIS User Community
0 60 120 240 Meters
1 2
3
6
4
5
SedimentLS-1
6-10
4-6
2-4
1-2
0-1
0 10 20 30 40 50 60 70 80 90 100
Extracted P (%)
Dep
th (c
m)
Organic P Precipitated P Adsorbed P Exchangeable P
10
9
8
7
6
5
4
3
2
1
TP (mg/kg)0 500 1000 1500 2000
Dep
th (c
m)
Beazley Laboratory – University of Central Florida
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3.3.3. Particulate P in the Water Column
Figure 22. The speciation of Lake Silver water column P averaged over all samples. Particulates: n= 6 (July and November); Soluble TP: n = 33 (May), n = 38 (July), n = 37 (Nov).Beazley Laboratory – University of Central Florida
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LAKE SILVER TMDL RESEARCH
• Internal loading ?• Sediment analyses• Interstitial water• Bottom of water column
• Algal identification over 24 hour cycle(Special thanks > OCEPD performed ID & quantification)
SSUPPLEMENTAL
SWMPFSA Workshop – Sept 8, 2017
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LAKE SILVER TMDL RESEARCH
• Internal loading ?• Sediment analyses• Interstitial water• Bottom of water column
• Algal identification over 24 hour cycle(Special thanks > OCEPD performed ID & quantification)
• Groundwater contributions• Historical use• Current uses
SSUPPLEMENTAL
SWMPFSA Workshop – Sept 8, 2017
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Lake Silver
Citrus Groves(Ardsley Manor)
gra079422016-01-15 14:38:20--------------------------------------------Lake Silver
gra079422016-01-15 14:39:27--------------------------------------------Citrus Groves (Ardsley Manor)
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Legend
Approximate Locations
U Groundwater Monitoring Well
.! Soil Boring/Groundwater Monitoring Well0 200 400
?! Soil Boring/Sediment Sample/Water Quality Sample
F
eetE Sciences, Incorporated FL Engineering Lic. #8691 34 East Pine Street Orlando, FL 32801 www.esciencesinc.com Phone: 407-481-9006Fax: 407-481-9627
Lake Silver
Orlando, Orange County, FL
Soil Boring, Sediment Sample,
Water Quality Sample Location Map
FIGURE
1DRAWN BY:LG
CHECKED BY:
PROJECT NUMBER: 1-1633-P05
SCALE:1 "=400 '
DATE:8/6/2015
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STRUCTURAL BMP’S
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LAKE SILVER TMDL –To Be Determined
SSUPPLEMENTAL
SWMPFSA Workshop – Sept 8, 2017
32804
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NON-STRUCTURAL
BMP’S
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Street Sweeping
SSUPPLEMENTAL
SWMPFSA Workshop – Sept 8, 2017
• Increase frequency• Incorporate both
mechanical (broom) and regenerative (vacuum)
• Rotate with trash collection
• * Future > City looking to add scales and moisture sensors to sweepers
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Education
SSUPPLEMENTAL
SWMPFSA Workshop – Sept 8, 2017
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EDUCATION
Residential• Yard waste campaign• Fertilizer ordinance• Septic maintenance• Pet waste ordinance• Storm drain markers• Florida Yards & Neighborhoods (FYN)
Commercial• Good housekeeping campaign
SSUPPLEMENTAL
SWMPFSA Workshop – Sept 8, 2017
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EDUCATION
Work closely with Office of Communications• *Next Door• Facebook• Twitter• Website• Mayor & Commissioner Newsletters
• *Billboards
SSUPPLEMENTAL
SWMPFSA Workshop – Sept 8, 2017
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INSPECTIONS & ENFORCEMENT
Residential• Yard waste
• Homeowner• Professional Lanscapers
• Erosion for remodeling
SSUPPLEMENTAL
SWMPFSA Workshop – Sept 8, 2017
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INSPECTIONS & ENFORCEMENT
Commercial• Proactive – Illicit Discharge Detection & Elimination• Private stormwater system
SSUPPLEMENTAL
SWMPFSA Workshop – Sept 8, 2017
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Questions ??