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Erosion and the Coalport

Posted by Brunella Battista on September 10, 2015 at 1:10 PM

It is very strange when a good Federal Government Scientific Reports from the past , that Canadian taxpayers paid for with hard earned tax dollars , and it never sees the light of day when planning forDelta Port Expansion by Metro Port Vancouver.

 

This Environment Canada Conservation document entitled "SEDIMENT TRANSPORTATION and its ENVIRONMENTAL IMPLICATIONS in the LOWER FRASER RIVER and FRASER DELTA" prepared by GeoSea Consulting in 1995 ! All

40 plus pages and 15 Fraser River and Delta Maps , was completed by world recognised and well respected River and Delta Scientists. Dr. Patrick McLaren and Dr. Ping Ren are the authors of the very detailed science paper and their findings to me are alarming. The reports final recomendations must be seriously considered, regarding any new plans for the expansion of the Delta Coal Port. Some of the abstract from the huge Federal Government report reads like this :

 

Present results of the sediment trend analysis in April 1995 of the Delta forslope south of the Westshore Terminal and Tsawwassen Terminals , now indicates NET EROSION of the for-slope is taking place ! The source of sand evidently being derived from the EROSION of the Delta forslope itself ,rather than receiving any present input of sand and fine mud from the Fraser River is now changing to erosion of the for-slope of the outer delta in certain locations. Its some thing like a gradual calving front end of a moving glacier, but with moving mud and sand.

 

"My comment"

The present EROSION on the Delta forslope may be endangering the stability of the COALPORT and TSAWWASSEN FERRY TERMINALS and is probably the result of the channelization of the South Arm, which effectively removes sediment replenishment to these two locations ! It is worth considering decreasing dredging efforts of the main river channel near Steveston and allowing deposition in both areas known to be ERODING !

 

"The river is changing and the findings of this report suggests that Canoe Pass once the main channel of the river , is returning again as the favorite location for the main outflow of the Fraser River ! This route is shorter and EROSION on the marine forslope may be adding a contributing pressure for the river to change its course ! In conclusion this report suggested the establishment of a monitoring program at both terminal sites and Canoe Pass, something that was NEVER DONE...

 

Terry Slack

Categories: Terry Slack Blog

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