Royal Rouge Trail Erosion Control Project - Toronto and Region ...

Figures
Figure 1. General location of study area. .................................................................................................. 1
Figure 2. Study limits at the rear of 30 - 48 Royal Rouge Trail, City of Toronto........................................ 2
Figure 3. Class Environmental Assessment Planning and Design Process. ............................................ 3
Figure 4. Erosion scar below Nos. 42 and 44 Royal Rouge Trail. ............................................................ 5
Figure 5. Active erosion behind Nos. 48 to 44 Royal Rouge Trail. ........................................................... 6
Figure 6. Slope conditions below No. 42 Royal Rouge Trail. ................................................................... 6
Figure 7. Active erosion behind Nos. 32 to 30 Royal Rouge Trail. ........................................................... 7
Figure 8. General study area with new regulation line (166/06) for the subdivision, May 2006. ............ 12
Figure 9. Boundaries of Rouge Hill Community...................................................................................... 17
Figure 10. Boundaries of Rouge Community.......................................................................................... 18
Figure 11. Aerial photograph taken in 1950 showing the rural nature of the project area ..................... 11
Figure 12. Aerial photograph taken in 1987 showing the housing development ……….……………….12
Figure 13. Location of positive test pits as a result of stage 2 testing.……………………………..………23
Figure 14. General location of the “L” rating flora species within the vicinity of project area................. 38
Figure 15. General location of the “L” rating fauna species within the vicinity of project area............... 40
Figure 16. General area of bird sightings in the Rouge River watershed. .............................................. 43
Figure 17. General area of Rouge River Valley, Life Science – ANSI...................................................... 45
Figure 18. Long-term stable slope line without any remedial protection................................................ 52
Figure 19. Proposed Preliminary Concept 1 for Site A. .......................................................................... 53
Figure 20. Proposed Preliminary Concept 2 for Site A. .......................................................................... 54
Figure 21. Proposed Preliminary Concept 1 for Site B. .......................................................................... 55
Figure 22. Proposed Preliminary Concept 2 for Site B. .......................................................................... 56
Tables
Table 1. Closest Distance from the Residential Dwellings to the Crest of the Slope................................ 4
Table 2. Air Quality Readings for Eastern Toronto (August 20, 2009) .................................................... 34
Table 3. Air Quality Readings for Eastern Toronto (October 20, 2009) .................................................. 34
Table 4. Typical L - Rank Description...................................................................................................... 36
Table 5. Flora Species and Level of Concern within TRCA’s Jurisdiction. ............................................. 38
Table 6. Fauna Species and Level of Concern within TRCA’s Jurisdiction. ........................................... 40
Table 7. Rouge River Watershed Mammal Species................................................................................ 42
Table 8. Bird Species observed within the Rouge River watershed. ...................................................... 43
Table 9. Projected property loss from Nos. 30 to 48 Royal Rouge Trail................................................. 48
Table 10. MNR Recommended Minimum Design Factors of Safety. ..................................................... 49
Table 11. Results of the Slope Stability Analysis. ................................................................................... 50
Table 12. Estimate of Time to Long-Term Stable Slope Crest................................................................ 51
Table 13. Evaluation of Preliminary Concepts for Site A.........................................................................57
Table 14. Evaluation of Preliminary Concepts for Site B.........................................................................57
Table 15. Detailed Environmental Analysis of the Preferred Alternative. ................................................ 60
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