Sanaterre::Kelly Values

"Kelly" Guidelines for Classification of Contaminated Soils ^§

In October 1979, R.T. Kelly, the scientific advisor to the Greater London Council (GLC), delivered a paper to the Society of the Chemical Industry conference on the reclamation of contaminated land. In this paper he considered the risks to several recognized targets. He presented several useful lists, but this is the only one which is usually reproduced.

Used initially by the GLC this was quickly adopted by many waste regulation authorities in the UK as well as the Health & Safety Executive. These guidelines have been superceded by the Contaminated Land Exposure Assessment in the UK

Guidelines for classification of contaminated soils -

suggested range of values (mg/kg) on air dried soils, except for pH

Parameter	Typical values for uncontaminated soils	Slight contamination	Contamination	Heavy contamination	Unusually heavy contamination
	A	B	C	D	E
pH (acid)	6-7	5-6	4-5	2-4	<2
pH (alkaline)	7-8	8-9	9-10	10-12	>12
Antimony	0-30	30-50	50-100	100-500	>500
Arsenic	0-30	30-50	50-100	100-500	>500
Cadmium	0-1	1-3	3-10	10-50	>50
Chromium	0-100	100-200	200-500	500-2500	>2500
Copper (available)	0-100	100-200	200-500	500-2500	>2500
Lead	0-500	500-1000	1000-2000	2000-1.0%	>1.0%
Lead (available)	0-200	200-500	500-1000	1000-5000	>5000
Mercury	0-1	1-3	3-10	10-50	>50
Nickel (available)	0-20	20-50	50-200	200-1000	>1000
Zinc (available)	0-250	250-500	500-1000	1000-5000	>5000
Zinc (equivalent)	0-250	250-500	500-2000	2000-1.0%	>1.0%
Boron (available)	0-2	2-5	5-50	50-250	>250
Selenium	0-1	1-3	3-10	10-50	>50
Barium	0-500	500-1000	1000-2000	2000-1.0%	>1.0%
Beryllium	0-5	5-10	10-20	20-50	>50
Manganese	0-500	500-1000	1000-2000	2000-1.0%	>1.0%
Vanadium	0-100	100-200	200-500	500-2500	>2500
Magnesium	0-500	500-1000	1000-2000	2000-1.0%	>1.0%
Sulphate	0-2000	2000-5000	5000-1.0%	1.0-5.0%	>5.05
Sulphur (free)	0-100	100-500	500-1000	1000-5000	>5000
Sulphide	0-10	10-20	20-100	100-500	>500
Cyanide (free)	0-1	1-5	5-50	50-100	>100
Cyanide	0-5	5-25	25-250	250-500	>500
Ferricyanide	0-100	100-500	500-1000	1000-5000	>5000
Thiocyanate	0-10	10-50	50-100	100-500	>2500
Coal tar	0-500	500-1000	1000-2000	2000-1.0%	>1.0%
Phenol	0-2	2-5	5-50	50-250	>250
Toluene extract	0-5000	5000-1.0%	1.0-5.0%	5.0-25.0%	>25.0%
Cyclohexane extract	0-2000	2000-5000	5000-2.0%	2.0-10%	>10.0%

^§ Source: "Site Investigation and Materials Problems", Proceedings of the Conference on Reclamation of Contaminated Land, Eastbourne, October 1979 (Society of the Chemical Industry, London, 1980).

"Kelly" Guidelines for Classification of Contaminated Soils §

Guidelines for classification of contaminated soils -

suggested range of values (mg/kg) on air dried soils, except for pH

Parameter

Typical values for uncontaminated soils

Slight contamination

Contamination

Heavy contamination

Unusually heavy contamination

§ Source: "Site Investigation and Materials Problems", Proceedings of the Conference on Reclamation of Contaminated Land, Eastbourne, October 1979 (Society of the Chemical Industry, London, 1980).

"Kelly" Guidelines for Classification of Contaminated Soils ^§

Typical values for
uncontaminated
soils

Slight
contamination

Heavy
contamination

Unusually heavy
contamination

^§ Source: "Site Investigation and Materials Problems", Proceedings of the Conference on Reclamation of Contaminated Land, Eastbourne, October 1979 (Society of the Chemical Industry, London, 1980).