The Niagara River Mussel Biomonitoring Program April 10, 2013 Niagara River implementers Workshop

Transcription

1 The Niagara River Mussel Biomonitoring Program April 10, 2013 Niagara River implementers Workshop

2 Historical Context Niagara River Toxics Committee Report: Identified sources of toxic chemicals Documented environmental conditions in water, sediment and biota Inventory of 261 chemicals 1987: Niagara River Declaration of Intent and Work Plan Niagara River Toxics Management Plan 2

3 NRTMP Work Plan Source Reduction Point sources Hazardous waste sites Ambient Monitoring Upstream/downstream program Biomonitoring Tributary screening and trackdown Public Information Annual reports and meetings 3

4 EMRB: Biomonitoring Programs Caged Mussel, (SPMDs, indigenous mussel) monitoring Young of the Year fish monitoring Sport fish contaminant monitoring 4

5 Objectives: Mussels/SPMDs Identify contaminant presence/absence Identify sources and source areas Spatially compare the relative contribution of contaminants to the river from sources Assess the success of remedial activities 5

6 Methods: Elliptio complanata - collected from Balsam Lake (south central Ontario) Mussels are deployed in cages on the U.S. and Canadian side of the river for three weeks Mussels are retrieved and shucked 6

7 Methods: Semi Permeable Monitoring Devices (SPMD) 7

8 8 Sampling Stations

9 Gill Creek PCBs: Mussels Total PCB (ng/g wet wt.) Remediation completed

10 1998 Remediation completed 10

11 11 PCBs: Sport Fish

12 PCBs: YOY Fish Niagara On the Lake Concentration (ng/g) Spottail Shiner Emerald Shiner Year 12

13 Gill Creek Mussels HCBD (ng/g wet wt.) ng/spmd Station α BHC β BHC HCBD 1,2,3 tri CB Scajaquada nd 3.3 Two Mile Ck PF up 0.9 nd nd nd PF 3.3 nd Gill Creek Lyons Creek nd nd NOTL nd nd

14 Chlorinated Benzenes (ng/g wet wt.) HCB PentaCB 1,2,3,4-TetraCB Remediation completed Pettit Flume Mussels

15 SPMD Data: 2009 Station 1,2,3,5 - tetra 1,2,4,5 tetra 1,2,3,4- tetra HCB d Total PCBs Aldrin α BHC β BHC CB CB CB logk ow Scajaquada nd nd nd Two Mile Ck nd nd nd Pettit Flume U/S nd 1.6 nd nd Pettit Flume nd Gill Creek Lyons Creek nd nd nd nd NOTL nd

16 Dioxins and Furans isomers pg/g (wet wt.) Mussels ,3,7,8-F 1,2,3,7,8-F 2,3,4,7,8-F 1,2,3,4,7,8-F 1,2,3,6,7,8-F 1,2,3,7,8,9-F 2,3,4,6,7,8-F 1,2,3,4,6,7,8-F 1,2,3,4,7,8,9-F octafuran 2,3,7,8-D 1,2,3,7,8-D 1,2,3,4,7,8-D 1,2,3,6,7,8-D 1,2,3,7,8,9-D ,2,3,4,6,7,8-D octadioxin Sediment isomer pg/g (dry wt.) ,3,7,8-F 1,2,3,7,8-F 2,3,4,7,8-F 1,2,3,4,7,8-F 1,2,3,6,7,8-F 1,2,3,7,8,9-F 2,3,4,6,7,8-F 1,2,3,4,6,7,8-F 1,2,3,4,7,8,9-F octafuran 2,3,7,8-D 1,2,3,7,8-D 1,2,3,4,7,8-D 1,2,3,6,7,8-D 1,2,3,7,8,9-D 1,2,3,4,6,7,8-D octadioxin

17 100 Bloody Run Creek Mussels Chlorinated Compounds (ng/g wet wt.) Data HCB PentaCB HCBD Total PCB ND ND ND ND ND ND Upstream Stn. 132 Stn. 131 Downstream Bloody Run Creek Stations 17

18 Bloody Run Creek 20 Dioxin/Furan Congener (pg/g) Sediment Sediment Mussels Dioxin/Furan congener (pg/g) Mussels TCDF PCDF PCDF HCDF HCDF HCDF HCDF heptaCDF heptaCDF OCDF 2378-TCDD PCDD HCDD HCDD HCDD heptaCDD OCDD

19 Chlorinated Organics (ng/g wet wt.) Occidental Chemical Co. Sewer 003 Mussels HCB PentaCB 1,2,3,4-TetraCB HCBD

20 Boyers Creek Millers Creek Bakers Creek Lyons Creek 20 Chippawa Chippawa Channel Channel

21 Canadian Sites Mussels: Trace concentrations of PCBs and pp DDE on occasion Sediment: pp DDE and pp DDD detected in sediment from Millers Creek trace concentrations of β-hexachlorocyclohexane and γ- chlordane in Bakers Creek 21

22 PCBs: 2012 Caged Mussel Data 600 Total PCBs (ng/g dry wt)

23 SPMD Results Spatial contaminant patterns generally consistent with mussels SPMDs detected compounds not previously measured in mussels e.g. aldrin, endrin, dieldrin, endosulphan I & II, methoxychlor and heptachlor Good agreement between estimated contaminant concentrations using SPMDs at NOTL with EC upstream/downstream water quality data 23

24 Conclusions Mussel and SPMD data have not identified Canadian sources of organic contaminants to the Niagara River Trace concentrations of p p-dde were present in tributaries throughout the NR watershed Decreasing contaminant trends at some remediated US sites e.g. Gill Ck (PCBs), Pettit Flume and 102nd St. hazardous waste site (tetra, penta, hexa-chlorinated benzene) 24

25 Conclusions Continue to monitor ongoing sources: Chlorinated benzenes: Bloody Run Creek; Occidental Chemical Co. Mirex: Occidental Chemical Co; 102 nd St.; LNR OC pesticide (lindane), tri-chlorobenzenes and HCBD: Gill Creek PCBs: Two Mile Creek; Gill Creek Dioxins and furans: Pettit Flume, Bloody Run Creek 25

26 Acknowledgements Greg Hobson John Thibeau 26