Over 20 Years TMDL Watershed Improvements & Compliance … · 2017-04-04 · TMDL Watershed...
Transcript of Over 20 Years TMDL Watershed Improvements & Compliance … · 2017-04-04 · TMDL Watershed...
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TMDL Watershed Improvements & Compliance Progress
Brian Boyer, P.E.
Environmental Engineering Manager
Kieser & Associates, LLC
536 E. Michigan Ave., Suite 300
Kalamazoo, MI 49007
(269) 344-7117
Over 20 Years of Excellence in Environmental Science & Engineering www.kieser-associates.com
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Overview 2
Project Setting
Background / Watershed Concerns
Implementation Efforts
Pre-Post Implementation Monitoring
Watershed Impacts and Benefits
TMDL Compliance Progress
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Project Setting
Kalamazoo River Watershed: 2,020 sq. miles
MICHIGAN Portage &
Arcadia Creek
Subwatershed
SCALE (MILES)
0 10 15 5
Lake Allegan
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Project Setting
Portage & Arcadia Creek Subwatersheds (36,000-acres)
Portage
West Fork Portage
Axtell Arcadia
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Monitoring Sites
Kalamazoo River
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Background: Stormwater Concerns
Portage Creek
21% urban land use
Ranked 1st in phosphorus loading (of 75)
Arcadia Creek
42% urban land use
Ranked 5th in phosphorus loading (of 75)
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Background: Stormwater Concerns
Watershed Management Plan (2001)
Monitoring: 2002-03 & 2013-14
Phosphorus TMDL (2001)
50% load reduction requirement
Highly urbanized P/A subwatersheds
Stakeholders:
Western Michigan University (WMU)
City of Kalamazoo
City of Portage
Others
Arcadia Creek
Portage Creek
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Off-Campus Contributing Areas
WMU: Stormwater Controls 7
30 BMPs
514 Acres Treated
64% of Campus
55% Reduction in
Runoff Volume
TMDL Reduction
56% (on campus)
Stormwater
Neutral® Verified
(with “offsets”)
2016
Stormwater Neutral® is a registered service mark of Kieser & Associates, LLC.
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WMU: Implementation of BMPs
BMP Efficiency Monitoring (2 sites)
Stormwater control measures (141 acres)
Infiltration and detention practices
Vegetated buffers & bank stabilization
Reconnected floodplains
Native vegetation
Substantial Improvements in TP and TSS loading
85% - 99% monitored BMP removal efficiencies
Improved in-stream hydrology & flood reduction
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WMU: Implementation of BMPs
BMP Efficiency - Lot 23 Site
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WMU: Implementation of BMPs
BMP Efficiency – Howard/Stadium Site
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WMU: Implementation of BMPs 11
Project Control
Type Annual TP Reduction
Annual TSS Reduction
Annual Volume Reduction
WMU Parking Lot
23
Detention/ Infiltration
48 lbs 85% 7 tons 85%
25 ac-ft
85%
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WMU: Implementation of BMPs 12
Project Control Type Annual TP Reduction
Annual TSS Reduction Annual Volume
Reduction
WMU Howard/ Stadium CMI
Detention/ Infiltration
176 lbs 100% 27 tons 100%
184 ac-ft
100%
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2003-2013 Kalamazoo SCMs
Stormwater Control Measure (SCM)
Kalamazoo
Portage
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Kalamazoo River
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Monitoring: 2002-03 & 2013-14
Goals & Objectives: Compare creek monitoring data
before/after 10 years of WMP implementation
Methods: Automated sampling
Creek mouths
BMPs
Stream stations
Wet event sampling
Dry event sampling
Parameters: Rainfall, flow
TP, TSS
Temp, D.O., pH, Conductivity, ORP
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Arcadia Creek Data Analyses
Methods:
Flow and rainfall evaluation
Flow duration curves and/or flow reduction
Calculate loading (flow + sample results)
Quantify current EMCs
Compare/contrast past and present data
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Data Analyses 16
2002-2003 Data
Most rainfall <1”
Flashy response
2013-2014 Data
More intense rainfall >1”
Moderated response
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Arcadia Creek Analysis: Flow 17
30 cfs
5 cfs
Observed Arcadia Creek flow reductions following ten years of stormwater implementation efforts as quantified within the WMU Water Quality Monitoring Grant Project (MDEQ #2012-0502).
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Arcadia Creek Loading Reductions TP Reductions 2003-2014: 789lbs (39% TP Reduction)
Annual TP Loading (lbs)
TSS Reductions 2003-2014: 141 tons (35% TSS Reduction)
Annual TSS Loading (tons)
EMCs
EMCs
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Load Reduction Source Comparison
TP TSS Volume
(lbs/yr) (tons/yr) (Mgal/yr)
WMU BMPs 854 311 863
Other BMPs 1,169 227 228
Arcadia Creek Total 2,023 539 1,092
WMU Reduction (% of Total) 42.2% 57.8% 79.1%
TP
Volume TSS
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Portage Creek Data Analyses
Methods:
Flow and rainfall evaluation
Flow duration curves and/or flow reduction
Calculate loading (flow + sample results)
Quantify current EMCs
Compare/contrast past and present data
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Portage Creek Data Analyses 21
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TP Reductions 2003-2014: 3,333lbs (35% TP Reduction)
TSS Reductions 2003-2014: 219 tons (15% TSS Reduction)
EMCs
EMCs
Annual TP Loading (lbs) Annual TSS Loading (tons)
Portage Creek Loading Reductions
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Reducing Loads to the Kalamazoo
Progress toward TMDL goals:
Arcadia Creek Annual Loading
2001-2002 2013-2014
TP TSS TP TSS
(lbs) (tons) (lbs) (tons)
2,023 403 1,234 262
Annual Load Reductions, 2002-2014
TP TSS TP TSS
789 lbs 141 tons 39% 35%
Portage Creek Annual Loading
2001-2002 2013-2014
TP TSS TP TSS
(lbs) (tons) (lbs) (tons)
9,521 1,460 6,188 1,241
Annual Load Reductions, 2002-2014
TP TSS TP TSS
3,333 lbs 219 tons 35% 15%
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Summary
Substantial benefits following 10 years of BMP
implementation
TP & TSS EMC decreases
Reduced peak flows
Moderated average wet weather flows
Reduced flooding
Monitoring confirmed BMP calculation benefits
WMU as a “champion” of implementation
Strategic placement of BMPs
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Special Thanks
PROJECT PARTNERS The FORUM of Greater Kalamazoo Western Michigan University City of Kalamazoo WWTP City of Allegan WWTP MDOT / MDEQ Kieser & Associates, LLC
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Over 20 Years of Excellence in Environmental Science & Engineering www.kieser-associates.com
Thank You
Brian Boyer, P.E.
Environmental Engineering Manager
www.kieser-associates.com Follow us: