Dear Forum Members
Please find attached the second issue of JISCmail GACs (added Arsenic &
Nickel) to plug the hole left by the Agency when they only published SGVs for
6% SOM. We have added GACs for 1% & 3% SOM and all GACs for residential
use without plant uptake.
The values for BTEX, arsenic, inorganic mercury, nickel & selenium were
produced by a group of volunteers including:
Jason Bale - Cardiff Council
Adam Czarnecki - VertaseFLI Limited
Catherine Helm - WD Environmental Limited
Tanya Holdsworth - T&P Regeneration Limited
Aamer Raza - Harrison Group Environmental Limited
The remainder wished to remain anonymous.
We have adopted the same approach that the Agency used in generating their
SGVs for 6% SOM. Our calculation of these values in no way endorses the
Agency approach to CLEA or their method to calculate SGVs. We have been
sensible with rounding and followed a similar approach the Agency adopted at
6% SOM (typically rounding to two significant figures).
We have provided a single value for xylenes (based on lowest isomer values)
which we suggest should be compared against the sum of xylene isomers
We will update the list when more SGVs are published later this century.
We are all professionals on here, so I’m not going to add a long list of
consultant speak caveats: you all know the score, so please use them
appropriately.
Kind regards
Chris Dainton on behalf of the JISCmail GAC volunteers
I understand that some forum members cannot download files from JISCmail.
At their request, the June 2009 list should be available soon at:
http://www.wdenvironmental.com/news/wd-environmental-coordinates-
development-of-new-gacs.php
(at present this links to the April list)
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