[CANUFNET] Contents of CANUFNET digest CANUFNET Digest, Vol 82, Issue 6 - Tree Planting Distances (Fletcher Smith)

Thu Nov 24 13:02:56 EST 2011

Re: Tree Planting Distances.

With respect to coming up with setback distances, root barriers should be taken into account as a variable.
If the setbacks are "root damage" related as opposed to canopy spread then the use of a root barrier may change the equation.  Many municipalities allow trees to be planted close to sidewalks, pavers, driveways and other surface hardscapes or utilities if a properly specified root barrier is in place to protect their infrastructure.
They include the root barrier specification right in the municipal planting detail.

Mike James
DeepRoot Canada Corp.
Tel: 1 800 561 3883
Tel:  (604) 687-0899 
Cell: (604) 220 9521
Fax: (604) 684-6744
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Today's Topics:

   1. Tree Planting Distances (Fletcher Smith)
   2. Fwd: Roots causing damage to Gas and Oil pipelines (Ray Morgan)

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Message: 1
Date: Wed, 23 Nov 2011 15:53:24 +0000
From: Fletcher Smith <FSmith at corp.delta.bc.ca>
Subject: [CANUFNET] Tree Planting Distances
To: "'canufnet at list.web.net'" <canufnet at list.web.net>
Message-ID:
	<4F1BB254A138914EA8C0E325FAB862A62936A593 at HallMBX2K2.delta.bc.ca>
Content-Type: text/plain; charset="us-ascii"

Hello All,

The Corporation of Delta is reviewing the distances and tolerances for tree installations within the municipal boulevard. This includes planting near sidewalks, curbs, driveways, intersections, crosswalks, lamp standards, underground utilities, etc.  Planting details in regards to soil depth/volume and root barrier requirements are also of interest.

I would appreciate the opportunity to  compare various municipal policies or bylaws that regulate tree installations. Please send PDF files or links to documents that are generally accepted by urban forest professionals and have proven effective towards minimizing infrastructure conflicts.

Best Regards,

Fletcher Smith
Urban Forestry Foreman
Corporation of Delta
5404 64th Street
Delta, BC V4K 3M6
Phone (604) 952-3460
Fax (604) 946-4855
fsmith at corp.delta.bc.ca<mailto:fsmith at corp.delta.bc.ca>

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Message: 2
Date: Wed, 23 Nov 2011 09:40:42 -0600
From: "Ray Morgan" <RMORGAN at regina.ca>
Subject: [CANUFNET] Fwd: Roots causing damage to Gas and Oil pipelines
To: canufnet at list.web.net
Message-ID: <4ECCBF9A.0935.00B7.0 at regina.ca>
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As per the subject line, I just came back from a meeting with a high profile oil company on how roots of trees/shrubs are decaying/corroding the protective coating on oil and gas pipe lines.
They are saying that because of the moisture content that surrounds the pipes, roots are attracted to this and are now "wrapping" themselves around the lines. They are claiming that this(roots causing damage) is causing the protective coating to decay or corrode, which they say, increases the risk for pipe failure.

The pipeline is situated on a city easement that allows for the current underground oil & gas infrastructure and for future additions, essentially it's a oil and gas easement. 
Trees and shrubs have been planted (1989) on this city easement to provide a visual barrier to the industrial and commercial areas of Regina. The company has signed an agreement to this, back in the early 90's. 
They are requesting that the plant material be removed because there is a concern that if the roots continue to corrode or decay the coating, this may cause leaks, explosions and loss of life.

This will have a significant impact to other areas of the municipality as there is natural gas, oil and other underground petroleum utilities. This decision could be precedence setting, even for homeowners.
I'll have our legal staff take a look into this and get their input as well.

There is no question that public safety is one of our first priorities here in Regina and that if a tree is of a public safety concern and we've determined this, we will remove it.

My questions are;

1. Has anyone dealt or heard of this concern before?

2. They have verbally indicated this, but I feel they should have data to support this. Is there any documentation out there that supports their claim? 

3. If the data/research is there that supports their claim, please pass this onto me.

Much appreciated and look forward to your response,

Ray Morgan
Manager, Forestry, Pest Control &
 Horticulture Branch
Parks and Open Space Department
City Operations Division

P: 306.777-7065
C: 306.531-5119
E: rmorgan at regina.ca 
 Regina.ca

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End of CANUFNET Digest, Vol 82, Issue 6
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