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
09:39 -----
"Balmer, Brad P"
<Brad.Balmer@amec To: Lisa Maxwell/Regulatory Services/ERH/ntc@ntc
.com> cc:
Subject: RE: Sink float tests
07/11/2007 09:10
Why don't you look at chemical testing. If the shot was primarily iron
silicate then you should analyse typical shot samples and then analyse
the other material if it is coal derived the material on site should
have levels of PAHs at different levels to those in iron silicate (which
should be very low if detected at all). If you want to have further
proof. Why not test iron silicate shot from several sources picked at
random by complainant if necessary and compare to the on site results.
Would possibly be more definitive than a physical test. I assume the
complainant is a farmer and the area is ploughed otherwise how is he
saying the shot has penetrated glacial till.
Brad Balmer
Associate Director
AMEC
Earth & Environmental
Renaissance Centre, 601 Faraday Street, Birchwood Park, Warrington, WA3
6GN, United Kingdom
Tel +44 (0)1925675000 Fax +44 (0)1925 675800
DDI +44 (0)01925 675802 Mobile +44(0)07795 395 832
mailto:[log in to unmask]
www.amec.com
-----Original Message-----
From: Contaminated Land Management Discussion List
[mailto:[log in to unmask]] On Behalf Of Lisa
Maxwell
Sent: Tuesday, November 06, 2007 4:00 PM
To: [log in to unmask]
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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