Appendix B: Contaminant analysis - disposal to land
Contaminant Analysis Required for Dredging Operations in the Thames
Disposal to Land
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Determinand
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Detection Limit
(mgkg-1 dry weight)
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Analytical Technique/Notes
Note all fractions of a sample should be analysed
|
|
General
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||
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PH Value
|
-
|
-
|
|
Total Sulphate
|
<2000
|
|
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Sulphide
|
<10
|
|
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Elemental Sulphur
|
<100
|
|
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Monohydric Phenols
|
<2
|
|
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Cyanides
|
|
|
|
Total Cyanide
|
<5
|
Further cyanide analysis may be necessary if levels exceed 20 mgkg-1.
|
|
Free Cyanide
|
See notes
|
|
|
Complex Cyanide
|
See notes
|
|
|
Thiocyanate
|
See notes
|
|
|
Organics
|
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|
PAH Screen by HPLC
|
Total hydrocarbons <100
|
|
|
Individual PAHS:
Naphthalene
Acenaphthylene
Acenaphthene
Fluorene
Phenanthrene
Anthracene
Fluroanthene
Pyrene
Benzo (a) anthracene
Chrysene
Benzo (b) fluroanthene
Benzo (k) fluoranthene
Benzo (a) pyrene
Indeno (1,2,3-cd) pyrene
Dibenzo (a,h) anthracene
Benzo (g,h,i) perylene
|
<0.1
|
|
|
Heavy Metals
|
||
|
Arsenic (total)
|
<7
|
|
|
Cadmium (total)
|
<0.4
|
|
|
Chromium (total)
|
<40
|
|
|
Lead (total)
|
<30
|
|
|
Mercury (total)
|
<0.1
|
|
|
Selenium (total)
|
<1
|
|
|
Copper (total)
|
<18
|
|
|
Nickel (total)
|
<20
|
|
|
Zinc (total)
|
<124
|
|
|
Available Lead
|
<200
|
|
|
Available Nickel
|
<20
|
|
|
Available Copper
|
<100
|
|
|
Available Zinc
|
<250
|
|
|
Zinc Equivalent
|
<250
|
|
|
Trace Metals/metalloids
Total parameters should be analysed unless stated
|
||
|
Barium
|
<500
|
|
|
Available Boron
|
<2
|
|
|
Magnesium
|
<500
|
|
|
Manganese
|
<500
|
|
|
Beryllium
|
<5
|
|
|
Vanadium
|
<100
|
|
|
Organo-metallic Compounds
|
||
|
Tri-butyl Tin & Di-butyl Tin
|
<0.1
|
|
|
Physical Properties
|
|
|
|
PSD (particle size)
|
Gravel, sand, silt fractions
|
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www.pla.co.uk/environment 11/02/2012