Then and Now
OGSIR Research Facility on Green Stormwater Technologies
Then and Now
360 SW Avery Ave., Corvallis, Oregon, 97330 http://research.engr.oregonstate.edu/hydroinformatics/avery
Meghna Babbar-Sebens, Ph.D. ([email protected]) School of Civil and Construction Engneering
Outline 1. Overview of OSU-Benton county Green Stormwater Infrastructure Research (OGSIR) facility 1. Design 2. Construction 3. Instrumentation
2. Research data collection and analyses (Then and Now) 1. Maintenance over time 2. Hydrologic performance over time 3. Characterization of water quality
3. Concluding thoughts and future plans
OSU-Benton County Green Stormwater Infrastructure Research (OGSIR) Facility
Project Site 360 SW Avery Ave. Corvallis, OR.
Catchment Delineation
100,000 ft2 or 2.3 acres
Grey-Green Treatment Train
Total power used (10/13/2014 – 6/15/2017)= 1630 kWh (or, $110)
August 2014
OGSIR Construction
Image source acknowledgement: Institute of Water and Watersheds, OSU
Total volume ~ 270 m3 ~ 9500 ft3
September 2014
Soil Layers
(½ native soil, ¼ mint compost, ¼ municipal yard waste) Construction sand
¾” washed river rock
Planting
Weeds!
Instrumentation Design
Operations and Maintenance
2. Research data collection and analyses
Maintenance over time
Maintenance: Labor (person-hours) THEN… Total = 529 hrs
NOW… Total = 206 hrs
Hydrologic performance over time
Infiltration Rates Change Over Time 2014
2015
2017
Bulk infiltration rate Cell 3
Surface Water Level: Cell 3 140 120
Height (mm)
100 80 60 y = -0.1418x + 119.53 R² = 0.9979
40 20 0
0
100
200
300
Time (sec)
400
500
0 Jan-18
Dec-17
Nov-17
Oct-17
Sep-17
Aug-17
Jul-17
Jun-17
May-17
Apr-17
Mar-17
Feb-17
Jan-17
Dec-16
Nov-16
Oct-16
Sep-16
Aug-16
Jul-16
Jun-16
May-16
Apr-16
Mar-16
Feb-16
Jan-16
Dec-15
Nov-15
Oct-15
Sep-15
Aug-15
Jul-15
Jun-15
May-15
Apr-15
Mar-15
Feb-15
Jan-15
Dec-14
Nov-14
Bulk infiltration rates: progression over time (
Bulk infiltration rate (mm/hr)
1000
900
800
700
600
500
400
300
200
100
Summary of rainfall, since 2014 Total monthly rain, inches 12 10 8 6 4 2 0
2014
2015
2016
2017
Inflow and Outflow Hydrographs
Influence on Peak Flow Delays
Characterization of water quality
Water Quality – Inflow Characterization SuspendedSolids
Water Quality – Inflow Characterization Dissolved Solids
Water Quality – Inflow versus Outflow Total Suspended Solids
TSS BMPdatabase.org (2016)
Water Quality – Inflow versus Outflow pH
Water Quality – Inflow versus Outflow Electrical Conductivity
Water Quality – Inflow versus Outflow Dissolved Metals Dissolved Copper BMPdatabase.org (2016)
Dissolved Zinc BMPdatabase.org (2016)
Summary of Percent Reductions
14.15
Dissolved Cu 3.74
Dissolved Zn 21.69
19.66
40.07
4.66
6.00
76.1%
-183.2%
-24.8%
72.4%
TSS
Turbidity
TDS
Influent EMC
58.09
82.29
Effluent EMC
8.59
% Reduction
85.2%
3. Concluding Thoughts
Infiltration properties evolve because of soil compaction and root development Peak flows delay benefits may vary over time Potential
flood adaptation strategy
Water quality benefits can vary Inflow
concentrations vary for the same site and for different storms Suspended solids concentrations tend to decrease in outflows in comparison to inflows Dissolved solids concentrations need not decrease in outflows in comparison to inflows
Thank you!
Acknowledgements
Co-director: Dr. Tyler Radniecki Benton County: Mr. Adam Stebbins, Students: Kshitiz Gyawali, Hashim Alyousef, Grant Livingston, Chris Conatser Funding Agencies: Pactrans, OWRD, Oregon BEST
Any Questions?
Then and Now
360 SW Avery Ave., Corvallis, Oregon, 97330 http://research.engr.oregonstate.edu/hydroinformatics/avery
Meghna Babbar-Sebens, Ph.D. ([email protected]) School of Civil and Construction Engneering
Outline 1. Overview of OSU-Benton county Green Stormwater Infrastructure Research (OGSIR) facility 1. Design 2. Construction 3. Instrumentation
2. Research data collection and analyses (Then and Now) 1. Maintenance over time 2. Hydrologic performance over time 3. Characterization of water quality
3. Concluding thoughts and future plans
OSU-Benton County Green Stormwater Infrastructure Research (OGSIR) Facility
Project Site 360 SW Avery Ave. Corvallis, OR.
Catchment Delineation
100,000 ft2 or 2.3 acres
Grey-Green Treatment Train
Total power used (10/13/2014 – 6/15/2017)= 1630 kWh (or, $110)
August 2014
OGSIR Construction
Image source acknowledgement: Institute of Water and Watersheds, OSU
Total volume ~ 270 m3 ~ 9500 ft3
September 2014
Soil Layers
(½ native soil, ¼ mint compost, ¼ municipal yard waste) Construction sand
¾” washed river rock
Planting
Weeds!
Instrumentation Design
Operations and Maintenance
2. Research data collection and analyses
Maintenance over time
Maintenance: Labor (person-hours) THEN… Total = 529 hrs
NOW… Total = 206 hrs
Hydrologic performance over time
Infiltration Rates Change Over Time 2014
2015
2017
Bulk infiltration rate Cell 3
Surface Water Level: Cell 3 140 120
Height (mm)
100 80 60 y = -0.1418x + 119.53 R² = 0.9979
40 20 0
0
100
200
300
Time (sec)
400
500
0 Jan-18
Dec-17
Nov-17
Oct-17
Sep-17
Aug-17
Jul-17
Jun-17
May-17
Apr-17
Mar-17
Feb-17
Jan-17
Dec-16
Nov-16
Oct-16
Sep-16
Aug-16
Jul-16
Jun-16
May-16
Apr-16
Mar-16
Feb-16
Jan-16
Dec-15
Nov-15
Oct-15
Sep-15
Aug-15
Jul-15
Jun-15
May-15
Apr-15
Mar-15
Feb-15
Jan-15
Dec-14
Nov-14
Bulk infiltration rates: progression over time (
Bulk infiltration rate (mm/hr)
1000
900
800
700
600
500
400
300
200
100
Summary of rainfall, since 2014 Total monthly rain, inches 12 10 8 6 4 2 0
2014
2015
2016
2017
Inflow and Outflow Hydrographs
Influence on Peak Flow Delays
Characterization of water quality
Water Quality – Inflow Characterization SuspendedSolids
Water Quality – Inflow Characterization Dissolved Solids
Water Quality – Inflow versus Outflow Total Suspended Solids
TSS BMPdatabase.org (2016)
Water Quality – Inflow versus Outflow pH
Water Quality – Inflow versus Outflow Electrical Conductivity
Water Quality – Inflow versus Outflow Dissolved Metals Dissolved Copper BMPdatabase.org (2016)
Dissolved Zinc BMPdatabase.org (2016)
Summary of Percent Reductions
14.15
Dissolved Cu 3.74
Dissolved Zn 21.69
19.66
40.07
4.66
6.00
76.1%
-183.2%
-24.8%
72.4%
TSS
Turbidity
TDS
Influent EMC
58.09
82.29
Effluent EMC
8.59
% Reduction
85.2%
3. Concluding Thoughts
Infiltration properties evolve because of soil compaction and root development Peak flows delay benefits may vary over time Potential
flood adaptation strategy
Water quality benefits can vary Inflow
concentrations vary for the same site and for different storms Suspended solids concentrations tend to decrease in outflows in comparison to inflows Dissolved solids concentrations need not decrease in outflows in comparison to inflows
Thank you!
Acknowledgements
Co-director: Dr. Tyler Radniecki Benton County: Mr. Adam Stebbins, Students: Kshitiz Gyawali, Hashim Alyousef, Grant Livingston, Chris Conatser Funding Agencies: Pactrans, OWRD, Oregon BEST
Any Questions?
