4/21/2015
INSTRUCTORS
Curtis Hinman
Senior Scientist
Key project experience: Research
specialist in the performance and
design of LID practices.
Dylan Ahearn PhD
Associate Scientist
Key project experience:
Stormwater monitoring and
proprietary treatment verification
and certification specialist.
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ADVANCED TOPICS IN LID DESIGN:
BIORETENTION MEDIA AND COMPOST
AMENDED SOILS
Training Program
Statewide LID
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performance
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BMP Selection
PROPRIETARY MEDIA FILTERS
• Ecology sets guidance for
which BMPs can be used
• Specific BMPs are required
for specific pollutants
• Most BMPs are
grandfathered in
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BMP Selection
PROPRIETARY MEDIA FILTERS
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BMP Selection
PROPRIETARY MEDIA FILTERS
Something Doesn’t Quite Look Right…
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BMP Selection
PROPRIETARY MEDIA FILTERS
Ecology attempts to verify BMP effectiveness with 2007 permit
required monitoring
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BMP Testing -TAPE
PROPRIETARY MEDIA FILTERS
Emerging Technology
• Testing program first established
in 2002
• Most recent revision in 2011,
next due this year
• Most rigorous and active testing
protocol in the nation
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BMP Testing -TAPE
PROPRIETARY MEDIA FILTERS
Jurisdictions that recognize TAPE
1. Washington
2. Oregon
3. New York
4. Virginia
5. New Hampshire
6. Rhode Island
7. Many smaller jurisdictions
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BMP Testing -TAPE
PROPRIETARY MEDIA FILTERS
Certifications
• General Use – GULD
– use at will
• Conditional Use – CULD
– install up to 10, monitor 1
• Pilot Use – PULD
-install up to 5, monitor all
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BMP Testing -TAPE
PROPRIETARY MEDIA FILTERS
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BMP Testing -TAPE
PROPRIETARY MEDIA FILTERS
What Does TAPE Monitoring Look
Like?
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BMP Testing -TAPE
PROPRIETARY MEDIA FILTERS
• Continuous Flow Monitoring
• Collect flow-weighted
composite samples
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BMP Testing -TAPE
PROPRIETARY MEDIA FILTERS
Rigorous Acceptance Criteria
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BMP Testing -TAPE
PROPRIETARY MEDIA FILTERSQ
QTime
Time
Storm volume = 1300 cf
Pacing = 100 cf
Samples = 13
Coverage = 100 %Q
QTime
Time
Storm volume = 1300 cf
Pacing = 200 cf
Samples = 6
Coverage = 100 %
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17Tim
Time
BMP Testing -TAPE
PROPRIETARY MEDIA FILTERS
MP8 IN
y = 3E-05x – 0.0223
R2 = 0.7929
0.2
0.4
0.6
0.8
1.2
1.4
1.6
1.8
2.2
2.4
2.6
2.8
10000
20000
30000
40000
50000
60000
70000
80000
90000
100000
Influent volume (cf)
Storm Depth (in)
Storm volume = 1300 cf
Pacing = 20 cf
Samples = 30 (Max. that autosampler can hold)
Coverage = 46%
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BMP Testing -TAPE
PROPRIETARY MEDIA FILTERS
Basic Treatment
80% removal of TSS (influent = 100 to 200 mg/L)
20 mg/L TSS effluent goal (influent <100 mg/L)
Enhanced Treatment
Influent dissolved copper range = 0.003 to 0.02 mg/L
Influent dissolved zinc range = 0.02 to 0.3 mg/L
Significantly higher removal rates than basic treatment
Oil Treatment
No ongoing or recurring visible sheen
Daily average TPH <10 mg/L
Maximum TPH discrete (grab) sample = 15 mg/L
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BMP Testing -TAPE
PROPRIETARY MEDIA FILTERS
Murphys’ Law and Field Work
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BMP Testing -TAPE
PROPRIETARY MEDIA FILTERS
Labor and Tech Intensive
• $15,000 equipment
• $200,000 total cost
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BMP Selection
PROPRIETARY MEDIA FILTERS
TAPE Testing of Three Proprietary Media Filters
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BMP Selection
PROPRIETARY MEDIA FILTERS
TAPE Testing of Three Proprietary Media Filters
Filterra
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Filterra – Tacoma
PROPRIETARY MEDIA FILTERS
Inlet
Concrete container
Surface storage
Mulch layer
Filter media
Vegetation
Underdrain
Bypass
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Filterra – Tacoma
PROPRIETARY MEDIA FILTERS
November 2006
Conditional Short-Term Use
Level Designation (CULD) for
basic and phosphorus treatment
Pilot Use Level Designation
(PULD) for enhanced and oil
treatment
Monitoring design
developed based on the
Technology Assessment
Protocol – Ecology
(TAPE) (Ecology 2008)
DSCN5002.JPG
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Filterra – Tacoma
PROPRIETARY MEDIA FILTERS
Two Filterra test systems installed at the Port of
Tacoma (POT) in Tacoma, WA
Hydrologic and water quality monitoring from May
2008 through May 2009
27 storm events sampled
29 grab samples
35 composite samples
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Filterra – Tacoma
PROPRIETARY MEDIA FILTERS
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Filterra – Tacoma
PROPRIETARY MEDIA FILTERS
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Filterra – Tacoma
PROPRIETARY MEDIA FILTERS
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Filterra – Tacoma
PROPRIETARY MEDIA FILTERS
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Filterra – Tacoma
PROPRIETARY MEDIA FILTERS
Irreducible = 20-40 mg/L using conventional
stormwater treatment technologies (Schueler 1996)
Based on the POT data, influent TSS concentrations
as low as 5.0 mg/L resulted in TSS removal
efficiencies that met or exceeded the 80% goal
Effluent concentrations were consistently reduced
to less than 8.0 mg/L regardless of influent
concentration
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Filterra – Tacoma
PROPRIETARY MEDIA FILTERS
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Filterra – Tacoma
PROPRIETARY MEDIA FILTERS
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Filterra – Tacoma
PROPRIETARY MEDIA FILTERS
General Use Level Designation
GULD for basic, enhanced, and oil treatment received
in December 2009
May be installed anywhere in the state of Washington
(subject to Ecology’s conditions)
CULD extended for phosphorus monitoring until
December 2011
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Filterra – Bellingham
PROPRIETARY MEDIA FILTERS
The Search for Phos Treatment
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Filterra – Tacoma
PROPRIETARY MEDIA FILTERS
Filterra test system installed at Hayward Dr.,
Bellingham, WA
Hydrologic and water quality monitoring from Jan
2013 through July 2013
22 storm events sampled
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Filterra – Bellingham
PROPRIETARY MEDIA FILTERS
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Filterra – Bellingham
PROPRIETARY MEDIA FILTERS
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Filterra – Bellingham
PROPRIETARY MEDIA FILTERS
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Filterra – Bellingham
PROPRIETARY MEDIA FILTERS
Only 3
samples
with influent
> 100
NC LCL95
TSS Removal
85% mean
removal
UCL95
effluent =
5.2 mg/L
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Filterra – Bellingham
PROPRIETARY MEDIA FILTERS
66% LCL95
TP Removal
73% mean
removal
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Filterra Summary
PROPRIETARY MEDIA FILTERS
Certified for Basic, Phosphorus, Enhanced, and
Oil treatment
3 monitoring installations
Maintenance is simple
Dual structure design can be difficult for
engineers
Mulch is an effective prefilter and bioturbation
keeping infiltration rate high. A living filter!
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Modular Wetland System
PROPRIETARY MEDIA FILTERS
MWS-Linear
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Modular Wetland System
PROPRIETARY MEDIA FILTERS
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Modular Wetland System
PROPRIETARY MEDIA FILTERS
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Modular Wetland System
PROPRIETARY MEDIA FILTERS
One test system installed in Portland, OR in a city
maintenance yard
Hydrologic and water quality monitoring from April
2012 through May 2013
28 storm events sampled
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Modular Wetland System
PROPRIETARY MEDIA FILTERS
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Modular Wetland System
PROPRIETARY MEDIA FILTERS
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Modular Wetland System
PROPRIETARY MEDIA FILTERS
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Modular Wetland System
PROPRIETARY MEDIA FILTERS
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Modular Wetland System
PROPRIETARY MEDIA FILTERS
Only 7
samples
with influent
> 100
NC LCL95
TSS Removal
85% mean
removal
UCL95
effluent =
12.8 mg/L
TSS
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Modular Wetland System
PROPRIETARY MEDIA FILTERS
17 qualifying
samples
LCL95
removal =
58%
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Modular Wetland System
PROPRIETARY MEDIA FILTERS
11 qualifying
samples
LCL95
removal =
60.5%
Zinc
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Modular Wetland System
PROPRIETARY MEDIA FILTERS
14 qualifying
samples
LCL95
removal =
32.5%
Copper
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MWS Summary
PROPRIETARY MEDIA FILTERS
Certified for Basic, Phosphorus, Enhanced
treatment
Maintenance is relatively simple
Flexible design options
Two stage filter and large surface area extend
the life of the filter
Living filter?
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Old Castle Perk Filter
PROPRIETARY MEDIA FILTERS
Perk Filter
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Old Castle Perk Filter
PROPRIETARY MEDIA FILTERS
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Old Castle Perk Filter
PROPRIETARY MEDIA FILTERS
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Old Castle Perk Filter
PROPRIETARY MEDIA FILTERS
System installed on
Bainbridge Island
Hydrologic and water
quality monitoring
from May 2009
through Feb 2010
22 storm events
sampled
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Old Castle Perk Filter
PROPRIETARY MEDIA FILTERS
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Old Castle Perk Filter
PROPRIETARY MEDIA FILTERS
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Old Castle Perk Filter
PROPRIETARY MEDIA FILTERS
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Old Castle Perk Filter
PROPRIETARY MEDIA FILTERS
Our Unique Challenge
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Old Castle Perk Filter
PROPRIETARY MEDIA FILTERS
4/21/2015
Old Castle Perk Filter
PROPRIETARY MEDIA FILTERS
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Old Castle Perk Filter
PROPRIETARY MEDIA FILTERS
4/21/2015
Old Castle Perk Filter
PROPRIETARY MEDIA FILTERS
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Old Castle Perk Filter
PROPRIETARY MEDIA FILTERS
TSS
Only 7 samples with
influent > 100
NC LCL95 TSS
Removal
81% median
removal
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Old Castle Perk Filter
PROPRIETARY MEDIA FILTERS
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Old Castle Perk Filter
PROPRIETARY MEDIA FILTERS
• 13 samples with
influent > 0.1
64% median
removal
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Old Castle Perk Filter
PROPRIETARY MEDIA FILTERS
4/21/2015
Perk Filter Summary
PROPRIETARY MEDIA FILTERS
Certified for Basic and Phosphorus treatment
Flexible design options
Fluidized media inhibits occlusion
Cheaper than StormFilter
Maintenance relatively involved
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Filter Longevity
PROPRIETARY MEDIA FILTERS
Treatment is all well and good, but what if the
thing clogs after 1 month?
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Filter Longevity
PROPRIETARY MEDIA FILTERS
City of Seattle
CatchBasin
StormFilter Study
Studies 15 CBSF
units across the
City
Conducted
quarterly testing
Tested rate of
clogging
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Filter Longevity
PROPRIETARY MEDIA FILTERS
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Filter Longevity
PROPRIETARY MEDIA FILTERS
6-months old
loading
Sized right = 120%
Undersized = 74%
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Filter Longevity
PROPRIETARY MEDIA FILTERS
12.5-months old
loading
Sized right = 68%
Undersized = 18%
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Filter Longevity
PROPRIETARY MEDIA FILTERS
Perk Filter
Once
maintained
then back to
full capacity!
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Filter Longevity
PROPRIETARY MEDIA FILTERS
MWS-Linear
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Filter Longevity
PROPRIETARY MEDIA FILTERS
Filterra Tacoma
Only 2% annual
bypass, but occurred
near end
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Filter Longevity
PROPRIETARY MEDIA FILTERS
Filterra Bellingham
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The Take Home
PROPRIETARY MEDIA FILTERS
• All certified systems are high performance and use
state of the science media
• BMPs are systematically undersized
• Proprietary BMPs are sized to sell
• Sediment loading to polishing systems is their
downfall
• “Living” filters may last longer, but when will the
main filter clog?
• TAPE style testing should be applied to all BMPs