Developing a Cumulative Effects Monitoring Program for the Saint John Harbour – Contaminants Karen Kidd and Angella Mercer Canadian Rivers Institute, UNB.

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Presentation transcript:

Developing a Cumulative Effects Monitoring Program for the Saint John Harbour – Contaminants Karen Kidd and Angella Mercer Canadian Rivers Institute, UNB Saint John

Main Objectives To work with SJH Environmental Monitoring Partnership to: Determine seasonal and annual variability of contaminants at reference sites – characterize baseline levels Determine level and extent of contamination at sites of concern Design optimal program for long term monitoring: –Location and number of reference and impacted sites –Methods (timing and frequency of sampling, sampling and analytical methods) –Thresholds for assessing change

Concentrations of Some Metals Highly Variable in Harbour – Example is Copper from report by Land & Sea Environmental Consultants

Canadian Water Network Monitoring Program – Contaminants in Sediments Phase 1 – Years 1 to 3 Objective is to characterize reference sites and establish baseline levels Samples to characterize variability at reference locations –What is the range of concentrations at reference sites? –What season is the best to sample in? –How much variability is there within sites across years?

6 reference sites:● 3 sites in inner harbour (blue) ● 3 sites in outer harbour (green) (site 13 replaced site 5) Sampling Sites Aug & Oct 2011, Apr and Jun 2012 Year 1 – 6 reference sites, 4 sampling dates Years 2 & 3 – 6 reference sites, 1 (optimal) sampling date

Methods for Sediments – Phase I Field Surface sediment grabs at 6 reference sites 5-10/site –Same timing and sites as invertebrate collections –Sampled top 5 cm of sediments –Frozen until processed

Methods – Phases 1 & 2 Lab Analyses of Sediments Freeze dried Standard US EPA methods used for extraction, clean up and analyses of sediments for metals, PAHs and PCBs Analyses include certified reference materials, lab and machine blanks, and replicates Organic carbon and grain size measured in sediments Samples from first 4 dates are complete

Contaminants Focus on metals and PAHs, PCBs for October sediments Metals/Elements - sediments analyzed for aluminum, arsenic, cadmium, cobalt, copper, chromium, iron, lanthanum, lead, magnesium, manganese, mercury, nickel, phosphorous, rubidium, selenium, silver, strontium, sulphur, thallium, uranium, vanadium and zinc (CCME guidelines exist for ones underlined; bolded ones previously monitored) PAHs – sediments analyzed for 16 priority compounds (CCME guidelines exist for 12) PCBs – 38 individual congeners, October samples only (results not shown here)

Contaminant levels Sites reference level My site threshold effects level What are the exposures? Some information on contamination levels so my site can be put in perspective Some information on thresholds and reference levels

Zinc in Sediments from the Inner Saint John Harbour, Date and Site Zn (mg/kg dw) Aug 2011 Oct 2011 Jun 2012 Apr 2012 CCME PEL=271 mg/kg CCME ISQG = 124 mg/kg Past Results: Inner = mg/kg Outer = mg/kg 3x SD p = mg/kg Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Site 02Site 03 Site 01

Zinc in Sediments from the Outer Saint John Harbour, Date and Site Zn (mg/kg dw) Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Site 06Site 13 Site 04 CCME PEL=271 mg/kg CCME ISQG = 124 mg/kg Past Results: Inner = mg/kg Outer = mg/kg 3x SD p = mg/kg

Arsenic in Sediments from the Inner Saint John Harbour, Date and Site As (mg/kg dw) Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Past Results: Inner = mg/kg Outer = mg/kg CCME PEL=41.6 mg/kg CCME ISQG = 7.24 mg/kg 3x SD p = mg/kg Site 02Site 03 Site 01

Arsenic in Sediments from the Outer Saint John Harbour, Date and Site As(mg/kg dw) Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Site 06Site 13 Site 04 Past Results: Inner = mg/kg Outer = mg/kg CCME PEL=41.6 mg/kg CCME ISQG = 7.24 mg/kg 3x SD p = mg/kg

Total PAHs in Sediments from the Inner Saint John Harbour, TPAHs(mg/kg) Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Site 02Site 03 Site 01 Date and Site Past Results: Little River= mg/kg 3x SD p = mg/kg noaa SQuiRT PEL=16.7 mg/kg noaa SQuiRT Threshold=1.6 mg/kg

Total PAHs in Sediments from the Outer Saint John Harbour, TPAHs(mg/kg ) Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Site 06Site 13 Site 04 Date and Site Past Results: Little River= mg/kg noaa SQuiRT PEL=16.7 mg/kg noaa SQuiRT Threshold=1.6 mg/kg 3x SD p = mg/kg

Phase I - Summary of Results Reference Sites Metals concentrations typically well below guidelines (lead, cadmium, copper, zinc, mercury) –Arsenic exceeds ISQG at all inner harbour sites and one outer harbour site –Chromium exceeds ISQG mainly at inner harbour sites –Aluminum above NOAA guidelines at all sites Total PAHs also well below effects thresholds for all four dates Total PCBs ranged from 2.2 to 17.5 ng/g dw, many congeners below MDL (<0.2 ng/g), most sites well below ISQG of 21.5 ng/g

Next Steps – Phase I and II 3 standard deviations captured all variability at reference sites, used as threshold for change Power analysis (using 3 SD) showed: –n of 3/site sufficient for detecting changes Oct 2012 –Re-sampled 6 reference sites (n=8/site) –Sampled 3 potentially more contaminated sites (“hotspots”) Collected surface sediments from 4 reference and 3 contaminated sites for toxicity testing (EC Moncton for Bryce Pippy’s MSc; n=5/site)

Phase I and II - Sites for Oct 2012 Sampling

At the End of Year 2 Results will be –Presented to SJH EMP –Used to design sampling program for Year 3 Repeat sampling of reference sites from Years 1 and 2 Sample and characterize “hotspots” in Harbour Potential to expand to other key areas Year 3 - Final deliverable - optimal design of long term monitoring program for contaminants in Saint John Harbour

References for Past Results Bezanson and Kranck (1981) Chou (2000) Loring (1979, 1982) Parrott et al. (2001) Ray MacKnight (1984) Tay et al. (1997) Washburn & Gillis (1993) Yurick (1982)

Copper in Sediments from the Inner Saint John Harbour, Cu (mg/kg dw ) Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Date and Site Past Results: Inner = mg/kg Outer = mg/kg CCME PEL=108 mg/kg CCME ISQG = 18.7 mg/kg 3x SD p = mg/kg Site 02Site 03 Site 01

Copper in Sediment from the Outer Saint John Harbour, Date and Site Cu (mg/kg dw) Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Site 06Site 13 Site 04 Past Results: Inner = mg/kg Outer = mg/kg CCME PEL=108 mg/kg CCME ISQG = 18.7 mg/kg 3x SD p = mg/kg

Cadmium in Sediments from the Inner Saint John Harbour, Date and Site Cd (mg/kg dw) Past Results: Inner = mg/kg Outer = mg/kg CCME PEL=4.2 mg/kg CCME ISQG = mg/kg 3x SD p = mg/kg Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Site 02Site 03 Site 01

Cadmium from Sediments in the Outer Saint John Harbour, Date and Site Cd (mg/kg dw ) Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Site 06Site 13 Site 04 Past Results: Inner = mg/kg Outer = mg/kg CCME PEL=4.2 mg/kg CCME ISQG = mg/kg 3x SD p = mg/kg

Lead in Sediments from the Inner Saint John Harbour, Date and Site Pb(mg/kg dw) Past Results: Inner = mg/kg Outer = mg/kg CCME PEL=112 mg/kg CCME ISQG = 30.2 mg/kg 3x SD p = mg/kg Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Site 02Site 03 Site 01

Lead in Sediments from the Outer Saint John Harbour, Date and Site Pb(mg/kg dw) Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Site 06Site 13 Site 04 Past Results: Inner = mg/kg Outer = mg/kg CCME PEL=112 mg/kg CCME ISQG = 30.2 mg/kg 3x SD p = mg/kg

Chromium in Sediments in the Inner Saint John Harbour, Date and Site Cr(mg/kg dw) CCME PEL=160 mg/kg CCME ISQG = 30.2 mg/kg Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Site 02Site 03 Site 01 3x SD p = mg/kg

Chromium in Sediments for the Outer Saint John Harbour, Date and Site Cr(mg/kg dw) Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Site 06Site 13 Site 04 CCME PEL=160 mg/kg CCME ISQG = 30.2 mg/kg 3x SD p = mg/kg

Mercury in Sediments from the Inner Saint John Harbour, Date and Site THg(ug/kg dw) CCME PEL=700 ug/kg CCME ISQG = 130 ug/kg Past Results: Inner = ug/kg Outer = ug/kg 3x SD p = ug/kg Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Site 02Site 03 Site 01

Mercury in Sediments from the Outer Saint John Harbour, Date and Site THg (ug/kg dw) Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Site 06Site 13 Site 04 CCME PEL=700 ug/kg CCME ISQG = 130 ug/kg Past Results: Inner = ug/kg Outer = ug/kg 3x SD p = ug/kg

Loss on Ignition 550 in Sediments from the Inner Saint John Harbour, Date and Site LOI550(%) Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Site 02Site 03 Site 01 3x SD p = %

Loss on Ignition 550 in Sediments from the Outer Saint John Harbour, Date and Site LOI550(%) Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Site 06Site 13 Site 04 3x SD p = %

Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Site 02Site 03 Site 01 SQuiRT AET = mg/kg 3x SD p = mg/kg

Aluminum in Sediments from the Outer Saint John Harbour, Date and Site Al(mg/kg dw) Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Site 06Site 13 Site 04 SQuiRT AET = mg/kg 3x SD p = mg/kg

Iron in Sediments from the Inner Saint John Harbour, Date and Site Fe(mg/kg dw) Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Site 02Site 03 Site 01 3x SD p = mg/kg SQuiRT AET = mg/kg

Iron in Sediments from the Outer Saint John Harbour, Date and Site Fe(mg/kg dw) Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Aug 2011 Oct 2011 Jun 2012 Apr 2012 Site 06Site 13 Site 04 SQuiRT AET = mg/kg 3x SD p = mg/kg

Triclosan Testing Cost of Method Development $4100 –Includes labour, standards and other consumables Cost/sample = $81 –Includes labour Overhead would be applied both costs –unless the funding is from a NSERC CRD grant (industry partnership)