SAJO Consulting Group
Members: Sumant, Jojo, Antonia, and Olivia
Winter 2014
Client: Quintin Rochfort, Physical Scientist
- Aquatic Contaminants Research Division
- Water Science and Technology Direc...
 Stormwater ponds are scientifically engineered
collection ponds for highway runoff
 Naturally treat highway runoff thro...
 Four sample sites: s1, s2, s3 ,s4
 Each site is representative and can expose the
condition of the entire pond
 Day trip during fall and spring seasons
 Water and sediment samples (benthos cores and
sediment chemistry)
 Small alum...
 Free cyanide, total hardness, major anions including
chloride, total and dissolved metals, total Kjeldahl
nitrogen (TKN)...
 Particle size, PAHs, acid extractable metals, TKN and
TP
 Centrifuged sediment pore water samples were also
submitted f...
RougePondYSIData
Parameter Units S1 S2 S3 S4 S1 S2 S3 S4 S1 S2 S3 S4 S1 S2 S3 S4
Temperature
℃
12.27 9.59 9.68 13.25 11.03...
 The mean conductivity at each site exceeds the range
in provided guideline
 Therefore, the Rouge stormwater pond is not...
 Aquatic macro invertebrate organisms known as
benthic communities
 The bottom of a lake or pond and can even live under...
 Rouge pond does not reflect the same water quality of
a typical healthy benthic community, usually found in
freshwater p...
 PAHs form as a result of burning organic material and
may also form naturally as a result of thermal
geological reaction...
s1 s2 s3 s4
Top 4 average
concentration
Fluoranthene - 0.585 µg/g Pyrene - 1.530 µg/g Pyrene - 1.693 µg/g Pyrene - 1.770 µ...
 Total and dissolved calcium, iron, magnesium, sodium
and zinc were detected in all the samples for water and
pore
 The ...
 S4 – highest P concentration embedded in sediment
 Porewater values exceed maximum allowable limits
outlined in CWA
 N...
 Weak acid cyanide was not present in the samples
beyond the method detection limit at any point during
analyses
 Overal...
 Highest: S4 contains heavy metals contains silt and
smaller particles
 The removal efficiency of stormwater ponds is
de...
 Due to high concentrations of various pollutants:
 The overall condition of the pond is poor
 Unsustainable for the na...
 Site 4 - most contaminated site
 Drain the water and excavate the sediment from all
four sites (if not all then at leas...
 Quintin Rochfort, Physical Scientist, National Water
Research Institute, Environment Canada
 Kristina Parker, Water Res...
Danielle Milani., (2014). Environment Canada. Canada Center for Inland Waters. Lab Studies of
Sediment Toxicity Using Inve...
Questions ???
Stormwater pond ppt (1)
Stormwater pond ppt (1)
Stormwater pond ppt (1)
Stormwater pond ppt (1)
Stormwater pond ppt (1)
Stormwater pond ppt (1)
Stormwater pond ppt (1)
Stormwater pond ppt (1)
Stormwater pond ppt (1)
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  • Sumant
  • Sumant
  • Sumant
  • Sumant
  • Antonia
  • Antonia
  • Antonia
  • Antonia
  • Antonia
  • Antonia
  • Antonia
  • Antonia
  • Sumant
  • Sumant
  • Sumant
  • Olivia
  • Olivia
  • Olivia
  • Sumant
  • Sumant
  • Jojo
  • Jojo
  • Jojo
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  • Stormwater pond ppt (1)

    1. 1. SAJO Consulting Group Members: Sumant, Jojo, Antonia, and Olivia Winter 2014
    2. 2. Client: Quintin Rochfort, Physical Scientist - Aquatic Contaminants Research Division - Water Science and Technology Directorate - Environment Canada  Investigate the impacts of various contaminants including road salts, heavy metals, PAHs, nutrient loadings, benthos and cyanides on the Rouge River stormwater pond  Evaluate the environmental condition of the pond based on data analysis  Create recommendations for disposal and/or land application of the sediment
    3. 3.  Stormwater ponds are scientifically engineered collection ponds for highway runoff  Naturally treat highway runoff through sedimentation and detention  Reduce contaminant loadings before the effluent reaches a natural receiving watercourse
    4. 4.  Four sample sites: s1, s2, s3 ,s4  Each site is representative and can expose the condition of the entire pond
    5. 5.  Day trip during fall and spring seasons  Water and sediment samples (benthos cores and sediment chemistry)  Small aluminum row boat, two paddles, small anchor, site map with coordinates of pond  YSI profile was collected for each site (pH, conductivity, etc.)  Field notes for each site were recorded in a sampling sheet which included YSI data control readings, sampling date, time, samples and other important observations.
    6. 6.  Free cyanide, total hardness, major anions including chloride, total and dissolved metals, total Kjeldahl nitrogen (TKN) and total phosphorus (TP) analyzed by Environment Canada’s National Laboratory for Environmental Testing (NLET)  As per Standard Methods for the Examination of Water and Wastewater  Total and dissolved metals were analyzed by the NLET laboratory using inductively coupled plasma (ICP-MS) methods as per Standard Methods
    7. 7.  Particle size, PAHs, acid extractable metals, TKN and TP  Centrifuged sediment pore water samples were also submitted for chlorides, total hardness, total & dissolved metals, TKN and TP  Particle size analysis for the sediment was done by ASL environmental laboratory and other sediment and pore water chemistry was analyzed by NLET
    8. 8. RougePondYSIData Parameter Units S1 S2 S3 S4 S1 S2 S3 S4 S1 S2 S3 S4 S1 S2 S3 S4 Temperature ℃ 12.27 9.59 9.68 13.25 11.03 8.93 8.87 8.33 9.02 4.88 7.09 7.25 13.27 15.98 10.37 8.92 Oxygen mg/L 10.73 7.76 7.21 0.26 12.1 11.36 3.95 0.28 35.99 27.95 33.65 6.67 10.6 7.25 1.01 0.24 Conductivity µs 3.369 2.4 2.26 16.7 7.716 7.723 9.925 28.64 11.03 8.74 6.09 3330 3655 2.527 13035 16450 pH pH 7.88 7.75 7.73 6.87 8.25 8.04 7.52 7.25 7.91 7.89 7.66 7.54 8.12 7.78 7.23 7.18 Depth YSI m 0.10 1.38 1.50 3.02 0.10 1.75 2.33 3.40 0.10 0.53 2.12 2.18 0.10 1.63 2.57 3.07 Water Depth to Sediment m 0.13 1.58 1.78 3.35 0.13 1.70 2.19 3.17 0.13 1.22 2.46 3.10 0.13 1.50 2.10 3.00 Maximum Depth m 0.20 2.94 2.95 3.55 0.20 2.84 3.29 4.06 0.20 2.08 3.43 3.37 0.20 2.06 3.44 3.60 Sediment Depth m 0.08 1.36 1.17 0.20 0.08 1.14 1.10 0.89 0.08 0.86 0.97 0.27 0.08 0.56 1.34 0.60 Nov-11 Apr-12 Nov-12 May-13
    9. 9.  The mean conductivity at each site exceeds the range in provided guideline  Therefore, the Rouge stormwater pond is not a suitable environment for certain species of fish or macro- invertebrates
    10. 10.  Aquatic macro invertebrate organisms known as benthic communities  The bottom of a lake or pond and can even live under levels of sediment depending on the species  The presence of certain benthic species an absence of others can be an indication of water quality  Toxicity tests such as bioaccumulation, growth and reproduction endpoints, survival, and tolerance level
    11. 11.  Rouge pond does not reflect the same water quality of a typical healthy benthic community, usually found in freshwater ponds  The water quality did not significantly improve or degrade during the sample season ( longevity of species)
    12. 12.  PAHs form as a result of burning organic material and may also form naturally as a result of thermal geological reactions  MOE Guideline: Soil, Ground Water and Sediment Standards for Use under Part XV.1 of the Environmental Protection Act,  highest allowable concentration for pyrene in sediment is 0.49 µg/g and fluoranthene is 0.75 µg/g.  Pyrene and fluoranthene exceeded this guideline indicating poor sediment quality for all sites excluding the average concentration of fluoranthene detected in s1.
    13. 13. s1 s2 s3 s4 Top 4 average concentration Fluoranthene - 0.585 µg/g Pyrene - 1.530 µg/g Pyrene - 1.693 µg/g Pyrene - 1.770 µg/g Pyrene - 0.515 µg/g Fluoranthene - 1.528 µg/g Fluoranthene - 1.553 µg/g Fluoranthene - 1.660 µg/g Chrysene - 0.470 µg/g Phenanthrene - 1.093 µg/g Benzo(g,h,i)perylene - 1.175 µg/g Benzo(b)Fluoranthene - 1.220 µg/g Benzo(b)Fluoranthene - 0.420 µg/g Chrysene - 1.003 µg/g Benzo(b)Fluoranthene - 1.120 µg/g Phenanthrene -1.14 µg/g Bottom 4 average concentration Acenaphthylene (ND) Acenaphthylene (ND) Acenaphthylene(ND) Acenaphthylene(ND) Dibenzo(a,h)anthracene (ND) Dibenzo(a,h)anthracene (ND) Acenaphthene (ND) Dibenzo(a,h)anthracene (ND) Acenaphthene (ND) Acenaphthene (ND) Anthracene (ND) Acenaphthene (ND) Fluorene (ND) Fluorene (ND) Dibenzo(a,h)anthracene (ND) Fluorene (ND)
    14. 14.  Total and dissolved calcium, iron, magnesium, sodium and zinc were detected in all the samples for water and pore  The heavy metal concentration in the sediment and water was not found to be alarming or higher than the guideline  Sodium concentration in sediment, water and pore water was noticeably high due to dissolved salt from highway runoff
    15. 15.  S4 – highest P concentration embedded in sediment  Porewater values exceed maximum allowable limits outlined in CWA  Nitrate is not a concern with regards to the ecological pond condition
    16. 16.  Weak acid cyanide was not present in the samples beyond the method detection limit at any point during analyses  Overall increasing trend in Rouge pond for total cyanide  the standards for cyanide in groundwater are 5 µg/L, or 0.005 mg/L  Many of the data points exceed these guidelines, particularly in spring 2013
    17. 17.  Highest: S4 contains heavy metals contains silt and smaller particles  The removal efficiency of stormwater ponds is dependent on flow and influent particle size distribution  Removal of small particles is inefficient in the pond  Failing to remove a high percentage of fine particles may be a potential issue within the pond
    18. 18.  Due to high concentrations of various pollutants:  The overall condition of the pond is poor  Unsustainable for the natural ecological habitat and benthic species  Maximum contaminant concentrations were detected in s4 including cyanide, chloride, polycyclic aromatic hydrocarbons to name a few
    19. 19.  Site 4 - most contaminated site  Drain the water and excavate the sediment from all four sites (if not all then at least from s4)  Dispose of it into secured landfill  According to the City of Hamilton report “the estimated annual cost could exceed $1,000,000 once the facilities age and accumulated sediment needs to be removed.”
    20. 20.  Quintin Rochfort, Physical Scientist, National Water Research Institute, Environment Canada  Kristina Parker, Water Resources Engineer, Town of Oakville  Francine Kelly Hooper, Kelly Hooper Environmental Inc., Senior Soils Scientist CH2M Hill  Danielle Milani, Environment Canada, Canada Center for Inland Waters
    21. 21. Danielle Milani., (2014). Environment Canada. Canada Center for Inland Waters. Lab Studies of Sediment Toxicity Using Inveterbrates. Question and Answer Discussion, January 20, 2014. Diya Ma, and Alice Casselman., (2010). Association of Canadian Educational Resources. Freshwater Benthic Project 2010. University of Toronto. Available: http://www.acer-acre.ca/LargeFiles/Riparian.pdf Siegel, Lori. (2007). Department of Environmental Services: Hazard Identification for Human and Ecological Effects of Sodium Chloride Road Salt. Available: http://www.rebuildingi93.com/documents/environmental/Chloride%20TMDL%20Toxicological %20Evaluation.pdf USEPA (2013). Cyanide Compounds. Available: http://water.epa.gov/type/rsl/monitoring/vms59.cfm USEPA (2012). Water: Monitoring & Assessment. 5.9 Conductivity. Available: http://water.epa.gov/type/rsl/monitoring/vms59.cfm Versar Inc., (2013) Chesapeake Bay Benthic Monitoring Program. Available: http://www.baybenthos.versar.com/benthos.htm University of Minnesota (2012). The Importance of Particle Size Distribution on the Performance of Sedimentation Practices. Available: http://stormwaterbook.safl.umn.edu/content/importance-particle-size-distribution- performance-sedimentation-practices Mulroy, K. (2010). Assessing the Performance of Two Stormwater Management Ponds in Waterloo, Ontario. Available: https://uwspace.uwaterloo.ca/bitstream/handle/10012/5057/Mulroy_Kathleen.pdf?sequence=1 Stormceptor. Particle Size Matters. Available: http://www.stormceptor.ca/pdf/psd_imbrium.pdf
    22. 22. Questions ???

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