UKTC Archive

Re: Trees, development & contaminated land

Subject: Re: Trees, development & contaminated land
From: ANeeds
Date: May 30 2006 11:22:59
But one question - How do you use an air spade on contaminated soil
without simply blowing the contaminants into the atmosphere and hence
into the lungs of those in the vicinity? I mean the operator can wear a
mask or  respirator, but what about everyone else down wind?

Jerry R

Good point! - As I remember the contamination of this land was described to
me as fairly low-level, nothing really nasty that the men in white coats
would need to deal with (an old Morris Minor had rusted away there).
However, I know nothing about the properties of contaminated soil so I
relied on the expertise of our Contaminated Land Officer who felt that it
was sufficient to blow the soil into a collection area penned in by
vertical boards held up road pins or similar.

Cheers,

Alex
--------------------------------------------
Assistant Tree Officer
Planning - Tree and Landscape


STRICTLY WITHOUT PREJUDICE CAVEAT
I should advise you that the view above expresses officer level opinions
which are offered on a strictly without prejudice basis to the formal
determination of any current, or forthcoming, application on the above
site.





                                                                           
             Jerry Ross                                                    
             <trees@jerryross.                                             
             co.uk>                                                     To 
                                       UK Tree Care                        
             30/05/2006 11:28          <uktc@xxxxxx.tree-care.info>         
                                                                        cc 
                                                                           
             Please respond to                                     Subject 
             uktc@xxxxxx.tree-c         Re: Trees, development &            
                 are.info              contaminated land                   
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           




ANeeds@xxxxxxxxx.gov.uk wrote:

Hi Jerry,

I'm not sure the following would be suitable in your case, but I've
recently had experience of this. When I pressed the soil testing company
as
to where exactly the contamination was they agreed to take more samples
which showed the major contamination to be isolated to a 2m x 2m patch
under one of two TPO'd trees. I have agreed with the developer and
Contaminated Land officer that the offending top 300mm of this area could
be removed using an air spade (air pick) and clean topsoil backfilled.

Hope this helps!

Alex
--------------------------------------------
Assistant Tree Officer
Planning - Tree and Landscape

Thanks for that Alex - the advice about confirming the extent of
contamination is a very useful tip.
But one question - How do you use an air spade on contaminated soil
without simply blowing the contaminants into the atmosphere and hence
into the lungs of those in the vicinity? I mean the operator can wear a
mask or  respirator, but what about everyone else down wind?

Jerry R

Former railway sidings with conditioned approval to develop to
residential;
Various trees to be retained.
Site found to have unacceptably high levels of heavy metal
contamination.
Proposed to contain the contaminants by capping the site to a depth of
600mm.
What to do around the trees?
Any useful suggestions?


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______________________________________________________________________
ARBORICULTURAL SURVEYOR REQUIRED: Go to www.tep.uk.com for more info

We are seeking a qualified and enthusiastic individual to undertake tree
risk assessment and management duties in the north of England. Sites are
diverse with many mature and veteran trees.
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To unsubscribe send mailto:uktc-unsubscribe@xxxxxx.tree-care.info