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Storms November 2006
Port Alberni Forest Operations
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Storms 2006
November 6
– 222mm (9”) rain in 24 hours– Winds gusting to 33km / hour– Dry soils– First Event– 6 Landslides
Storm #1
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Storms 2006
November 15
– 226mm (9”) rain in 24 hours– Winds gusting to 116km / hour– Saturated Soils– Compounding effect– 132 Landslides– Lost access to Nitnat & Bamfield– Lost access to most mainlines
Storm #2
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Storms 2006
Slides normally occur when rainfall reaches 150mm over 24 hours.
– Nov 6 - 222mm / 24 hours
– Nov 15 - 226mm / 24 hours
HistoryHistory
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Storms 2006
Guidelines state that shutdown occurs when the rainfall reaches 100mm over 24 hours.
– This provides time for crews to shutdown and arrive home safely before slides occur.
Rainfall Shutdown Rainfall Shutdown GuidelinesGuidelines
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Storms 2006
Recent events have produced 25 -30mm of rain per hour
Given a travel time of 2 hours for many crews this will still allow the required time for crew safety.
Worker SafetyWorker Safety
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Storms 2006
Priority given to community access routes.Repairs to Logging Operations & future access is still taking place & will be ongoing for the coming year.Patch repairs were done on structures where it was required to wait for summer fish windows.Hopefully will be eligible for some Forest Investment Account funding to assist with some of the natural slides.
Remedial WorksRemedial Works
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Br. 167 Central Creek
From across the Valley
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Br. 167 Central Creek
From a Distance
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Miller Creek Drainage
Old 2nd Growth
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Summit Main Washout
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Venn Main Bridge
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Camp B
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Camp B
Cleanup
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CarmanahMain
At Siding
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Central North
25 km
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Flora Washout
6.5 km
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Venn Main
BCTS
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Central Creek & Bamfield Main
Sarita Lake
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KlanawaMain
31 km
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Summit Road 40
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Thompson Creek Area
Natural Gully Slide
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Worthless Creek Main Bridge
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