L Maxwell
Contaminated Land Officer
Development Directorate
The Killingworth Site
P.O.Box 113
Station Road
Killingworth
Newcastle upon Tyne
NE12 6WJ
Tel. 0191 219 2488
Fax. 0191 219 2457
Unless stated, opinions, conclusions and other information expressed in
this message are personal, and not those of North Tyneside Council.
----- Forwarded by Lisa Maxwell/Regulatory Services/ERH/ntc on 13/11/2007
09:41 -----
Barry Croft
<barry@greenbrainassoci To: Lisa Maxwell/Regulatory Services/ERH/ntc@ntc
ates.co.uk> cc:
Subject: RE: Sink float tests
07/11/2007 13:13
Please respond to barry
Density would indeed tell them apart - but so would chemistry, and you may
already have the data in front of you. If its iron silicate the total iron
will be very high indeed and organics will be negligible. If its coal dust
iron will be low and organics (as PAH) will be very high...
Barry Croft
GREEN BRAIN ASSOCIATES
16 Rectory Drive
Burnham-on-Sea
Somerset TA8 2DT
Tel/fax: +44-(0)1278-781276
Mobile: +44-(0)7866-098502
[log in to unmask]
www.greenbrainassociates.co.uk
-----Original Message-----
From: Lisa Maxwell [mailto:[log in to unmask]]
Sent: 06 November 2007 16:00
Subject: Re: Sink float tests
Hello all
Quick background, we have a complainant who insists that refurbishment work
of a viaduct has led to pollution of the surrounding land (his words) and
was insistent that the iron silicate shot used to remove paint is still on
site in significant amounts. The site was cleaned during works adhering to
best practicable means and again at the completion of works, which as a
result of the complainant included a scrape of surface material
replacement of topsoil in some areas.
2 years down the line from the original complaint the complainant is still
insistent that there is an issue and despite numerous meeting on site with
other parties involved has made very clear his complete "lack of faith in
the council". A recent site visit with senior management and the
complainant still has not resolved this.
Now to the muppet question, having a site investigation (both labs and GI)
and consultancy background before moving to local authority (plus the
necessary post graduate degree) i am very confidant that the material the
complainant is referring to is infact coal fines within the glacial till,
however the complainant is unwilling to acknowledge the councils technical
ability to reach this conclusion.
Therefore I need a test that could prove that the material in question is
in fact coal fines and not iron silicate. I was thinking along the lines
of a float sink test so any confirmation of this or any alteratives would
be greatly appreciated. (its been over 10 years since i last carried out
this test so I'm a bit woolly as to what it entails).
Yours in anticipation
Lisa
L Maxwell
Contaminated Land Officer
Development Directorate
The Killingworth Site
P.O.Box 113
Station Road
Killingworth
Newcastle upon Tyne
NE12 6WJ
Tel. 0191 219 2488
Fax. 0191 219 2457
Unless stated, opinions, conclusions and other information expressed in
this message are personal, and not those of North Tyneside Council.
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