# Commission Regulation (EC) No 1737/2006 of 7 November 2006 laying down detailed rules for the implementation of Regulation (EC) No 2152/2003 of the European Parliament and of the Council concerning monitoring of forests and environmental interactions in the Community, Division II.6: Analysis methods

Extent: E+W+S+N.I.

The inventory of the forest soil solution monitoring distinguishes between mandatory and optional parameters (See list below).
LIST OF PARAMETERS
Measurement is advisable when acid base budgets are calculated.
Measurement of NH4 is advised in areas with high NHx deposition (above 20 kg NHx per ha per year).
Advised since these are minor nutrients. Member States are free to analyse more, all, or part of the optional parameters.
Man. = Mandatory Opt. = Optional
Parameter
Unit
Mandatory/Optional
Conductivity
μS/cm
Opt.
pH
Man
Alkalinity
μmolc/l
Opt (if pH > 5)
DOC
mg/l
Man
Sodium (Na)
mg/l
Opt
Potassium (K)
mg/l
Man
Calcium (Ca)
mg/l
Man
Magnesium (Mg)
mg/l
Man
Aluminium (total)
mg/l
Man (if pH< 5)
Aluminium (labile)
mg/l
Opt
Iron (Fe)
mg/l
Opt
Manganese (Mn)
mg/l
Opt.
Total Phosphorus (P)
mg/l
Opt
NO3-N
mg/l
Man
SO4-S
mg/l
Man
NH4-N
mg/l
Opt
Chlorine (Cl)
mg/l
Opt
Chromium (Cr)
μg/l
Opt
Nickel (Ni)
μg/l
Opt
Zinc (Zn)
μg/l
Opt
Copper (Cu)
μg/l
Opt
Lead (Pb)
μg/l
Opt
Cadmium (Cd)
μg/l
Opt
Silicon (Si)
mg/l
Opt

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Source: https://www.legislation.gov.uk/eur/2006/1737/annex/I/chapter/7/division/II/division/II.6 (the official version)
Page: https://openlegislation.uk/eu-regulation-2006-1737/annex-I/chapter-7/division-II/division-II.6
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.