Presentation to the District of Central Saanich Hagan-Graham and Tetayut Water Quality Monitoring Programs

Transcription

1 Presentation to the District of Central Saanich Hagan-Graham and Tetayut Water Quality Monitoring Programs April 2 th, 217

2 Hagan-Graham Summary Modern WQ program undertaken at sites on Hagan-Graham Creeks: 18 monthly sampling events since June 25 Measuring of water temperature, O 2, ph, conductivity, phosphate, nitrite, nitrate, ammonia and turbidity at each site Metals, PAH, TEH and fecal coliform measured at Kirkpatrick outfall in water (monthly) and sediments (~quarterly) ~27 hours of volunteer effort in total

3 Water Quality Monitoring Hagan-Graham Site Map 1 HAGAN CREEK 3 Confluence of Hagan and Graham Creeks b Creek Drainage Ditch Hagan Creek at the West Saanich Road Graveyard Hagan Creek at the end of Malcolm Road Graham Creek at the Cultra Rd CRD water station Graham Creek at the Stelly s Rd culvert Kirkpatrick Crescent Outfall Graham Creek at Kersey Road b GRAHAM CREEK

4 Water Quality Sampling - Kirkpatrick Crescent outfall - Fecal Coliforms and Selected Metals and TEHs

5 Water Quality Monitoring Graham Creek - Kirkpatrick Crescent Outfall Graph 1 - Concentration of fecal coliforms (CFU/1mL) in water from Kirkpatrick Crescent outfall in FC = 8, CFU/ml 1 Fecal Coliform Concentration (CFU/1ml) 8 Fecal Coliform Concentration (CFU/1ml) Jan-1 2-Feb-1 2-Mar-1 2-Apr-1 2-May-1 2-Jun-1 2-Jul-1 2-Aug-1 2-Sep-1 2-Oct-1 2-Nov-1 Safe Swimming Guideline (CFU/1ml) 8 hour Precipitation (mm) 8 Hour Precipitation (mm)

6 Graph 2 - Concentration of arsenic (ug/l) in water from Kirkpatrick Crescent outfall in Arsenic (ug/l) CCME Guideline (ug/l) 8 hour precipitation (mm) /Jan/1 2/Feb/1 2/Mar/1 2/Apr/1 2/May/1 2/Jun/1 2/Jul/1 2/Aug/1 2/Sep/1 2/Oct/1 Arsenic Concentration (ug/l) 8 Hour Precipitation (mm)

7 Graph 3 - Concentration of Arsenic (ug/l) in water from Kirkpatrick Crescent Outfall from June 25 to Dec As = 37 ug/l Arsenic (ug/l) CCME Guideline (ug/l) Jun-5 9-Dec-5 9-Jun- -Dec- July Dec-7 9-Jul-8 8-Jan-9 1-Jul-9 15-Jan-1 1-Jul-1 12-Jan Jul-11 1-Jan Jul Feb Aug Feb-1 29-Aug-1 2-Feb Aug-15 Arsenic Concentration (ug/l)

8 Graph - Concentration of zinc (ug/l) in water at Kirkpatrick Crescent outfall in Zinc Concentration (ug/l) Zinc (ug/l) CCME Guideline (ug/l) Jan-1 2-Feb-1 2-Mar-1 2-Apr-1 2-May-1 2-Jun-1 2-Jul-1 2-Aug-1 2-Sep-1 2-Oct-1 8 hour precipitation (mm) 8 Hour Precipitation (mm)

9 12 Graph 5 - Concentration of zinc (ug/l) in water from Kirkpatrick Crescent Outfall from June 25 to Dec Zinc (ug/l) CCME Guideline (ug/l) Jun-5 22-Dec-5 22-Jun- 22-Dec- 22-Jun-7 22-Dec-7 22-Jun-8 22-Dec-8 22-Jun-9 22-Dec-9 22-Jun-1 22-Dec-1 22-Jun Dec Jun Dec Jun Dec Jun-1 22-Dec-1 22-Jun Dec-15 Zinc Concentration (ug/l)

10 1 Graph - Concentration of arsenic and zinc (ug/l) in water from Kirkpatrick Crescent outfall in Zinc Concentration (ug/l) 1 8 Zinc (ug/l) /Jan/1 2/Feb/1 2/Mar/1 2/Apr/1 2/May/1 2/Jun/1 2/Jul/1 2/Aug/1 2/Sep/1 2/Oct/1 Arsenic (ug/l) Arsenic Concentration (ug/l)

11 Graph 7 - Concentration of TEHs (mg/l) in water from Kirkpatrick Crescent outfall from June 25-Dec 21 present TEH concentration (mg/l) Guideline(mg/l) Jun-5 22-Dec-5 22-Jun- 22-Dec- 22-Jun-7 22-Dec-7 22-Jun-8 22-Dec-8 22-Jun-9 22-Dec-9 22-Jun-1 22-Dec-1 22-Jun Dec Jun Dec Jun Dec Jun-1 22-Dec-1 22-Jun Dec Jun-1 TEH Concentration (mg/l)

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13 Water Quality Monitoring Hagan-Graham Site Map 1 HAGAN CREEK 3 Confluence of Hagan and Graham Creeks b Creek Drainage Ditch Hagan Creek at the West Saanich Road Graveyard Hagan Creek at the end of Malcolm Road Graham Creek at the Cultra Rd CRD water station Graham Creek at the Stelly s Rd culvert Kirkpatrick Crescent Outfall Graham Creek at Kersey Road b GRAHAM CREEK

14 Graph 8 - Concentration of dissolved oxygen (mg/l) of water from Cultra Road and Stelly's Road sites Dissolved oxygen concentration (mg/l) Jan-1 2-Feb-1 2-Mar-1 2-Apr-1 2-May-1 2-Jun-1 2-Jul-1 2-Aug-1 2-Sep-1 2-Oct-1 Cultra Road Stelly's Road

15 Graph 9 - Temperature ( C) of water from Cultra Road and Stelly's Road sites Water Temp ( C) Jan-1 2-Feb-1 2-Mar-1 2-Apr-1 2-May-1 2-Jun-1 2-Jul-1 2-Aug-1 2-Sep-1 2-Oct-1 Cultra Road Stelly's Road

16 Water Quality Hagan Creek - Comment Encourage regular contact with all the businesses in the Keating Industrial area to determine if BMP s are being followed with respect to discharge to storm sewers. Although some improvements are noticeable, there are still some chronic problems: cadmium, copper, chromium, zinc, lead, nickel, TEHs, coliforms, low dissolved oxygen levels and turbidity outside the sitespecific guideline.

17 Water Quality Hagan Creek - Recommendations Continue monitoring contaminants in the water/sediment at the Kirkpatrick outfall. (underway) Renew public education and awareness projects such as the Keating Industrial Park Water Quality Initiative. Install end of pipe filter and/or a constructed wetland to clean contaminated stormwater downstream of the Kirkpatrick outfall and act as a buffer between catastrophic spill events and downstream areas. (part of ISMP Implementation) Work with landowners to educate them on the problems associated with depositing organic matter in creeks and other fresh water bodies (Agricultural Committee as conduit). Investigate the feasibility of restoring Graham Creek upstream of the culvert under Stelly s Road (Site 5), with a view to improving the ecological functioning of this reach. (part of ISMP Implementation) Work to educate landowners on the importance of riparian vegetation and stream features such as large woody debris and pool-riffle complexes to stream ecosystem health. Further implement recommendations of the ISMP process as soon as fiscally possible. Re-establish water flow gauging stations established by the ISMP team. Install a flow measurement system (passive or active) at the Kirkpatrick Outfall. Survey of parking lot catch basin maintenance in DCS.

18 Tetayut Creek Summary WQ program undertaken at 9 sites in Tetayut Creek: 7 monthly sampling events since February 211 Measuring of water temperature, O 2, ph, conductivity, phosphate, nitrite, nitrate, ammonia and turbidity at each site Metals, PAH, TEH and fecal coliform measured at Keating Industrial Park outfall in water (monthly) and sediments (~quarterly) ~13 hours of volunteer effort in total

19 Water Quality Monitoring Tetayut Creek 5 5a

20 Graph 1 - Turbidity of water from Sites 2, and 8 in the Tetayut Creek Watershed in (Site 2) Kennel Creek (Site ) Mure Brook (Site 8) Jan-1 1-Feb-1 1-Mar-1 1-Apr-1 1-May-1 1-Jun-1 1-Jul-1 1-Aug-1 1-Sep-1 1-Oct-1 1-Nov-1 1-Dec-1 1-Jan-17 Turbidity (FTU's)

21 Water Quality Sampling Keating Industrial Park Outfall Fecal Coliforms and Selected Metals

22 Water Quality Monitoring Tetayut Creek Keating Industrial Park Stormwater Outfall 7, Graph 11 - Concentration of fecal coliforms (CFU/1ml) in water from Keating Industrial Park stormwater outfall (Site 2) in 21. 1, Fecal Coliform (CFU/1ml) Safe Swimming Guideline (2CFU/1mL) 8 hour Precipitation (mm) 9 8 5,, 3, 2, , 1 25-Jan-1 25-Feb-1 25-Mar-1 25-Apr-1 25-May-1 25-Jun-1 25-Jul-1 25-Aug-1 25-Sep-1 25-Oct-1 25-Nov-1 Fecal Coliform Concentration (CFU/1ml) 8 Hour Precipitation (mm)

23 .18 Graph 12 - Concentration of cadmium (ug/l) in water from Keating Industrial Park Stormwater outfall East (Site 2) Tetayut Creek in Cadmium Concentration (ug/l) CCME Guideline (ug/l) 8 hour precipitation (mm) Jan-1 25-Feb-1 25-Mar-1 25-Apr-1 25-May-1 25-Jun-1 25-Jul-1 25-Aug-1 25-Sep-1 25-Oct-1 25-Nov-1 Cadmium Concentration (ug/l) 8 Hour Precipitation (mm)

24 18 Graph 13 - Concentration of zinc (ug/l) in water from Keating Industrial Park stormwater outfall (Site 2) Tetayut Creek in Zinc Concentration (ug/l) CCME Guideline (ug/l) 8 hour precipitation (mm) Jan-1 25-Feb-1 25-Mar-1 25-Apr-1 25-May-1 25-Jun-1 25-Jul-1 25-Aug-1 25-Sep-1 25-Oct-1 25-Nov-1 Zinc Concentration (ug/l) 8 Hour Precipitation (mm)

25 9 Graph 1 - Concentration of zinc (ug/l) in water from Keating Industrial Park stormwater outfall East (Site 2) from February 211 to present. 8 Zinc Concentration (ug/l) 7 CCME Guideline (ug/l) Feb-11 8-Aug-11 8-Feb-12 8-Aug-12 8-Feb-13 8-Aug-13 8-Feb-1 8-Aug-1 8-Feb-15 8-Aug-15 8-Feb-1 8-Aug-1 Zinc Concentration (ug/l)

26 3 Graph 15 - Concentration of TEHs (mg/l) in water from Keating Industrial Park stormwater outfall East (Site 2) from February 211 to present. 25 TEH Concentration (mg/l) Guideline (mg/l) Feb-11 8-Aug-11 8-Feb-12 8-Aug-12 8-Feb-13 8-Aug-13 8-Feb-1 8-Aug-1 8-Feb-15 8-Aug-15 8-Feb-1 8-Aug-1 TEH Concentration (mg/l)

27 Water Quality Tetayut Creek- Recommendations A continuation of monitoring physical and nutrient parameters in the water and sediment at the Keating Industrial Park Stormwater Outfall and other areas of the industrial park is recommended. Investigate the origin of chronic contamination and acute spill events with DCS and CRD. Enhance current public education and awareness projects, and the Keating Industrial Park Water Quality Initiative needs to be repeated. Continue to work with businesses to improve hazardous material handling and disposal practices. Investigate the feasibility of constructing a wetland to clean contaminated stormwater downstream of the East Keating stormwater outfall and act as a buffer between catastrophic spill events and downstream areas. (potential Healthy Watershed Committee initiative) Work with landowners to educate them on the problems associated with depositing organic matter in creeks and other fresh water bodies. Work to educate landowners on the importance of riparian vegetation and stream features such as large woody debris and pool-riffle complexes to stream ecosystem health. Further implement recommendations of the ISMP process as soon as fiscally possible. Install water flow gauging stations. Install a flow measurement system (passive or active) at the Keating Industrial Park Stormwater East Outfall. Survey of parking lot catch basin maintenance in DCS.

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29 Questions? Thank you!