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Standards + Guidelines ? > Kelly Indices (gasworks) ? > |
Kelly Indices (Former GLC) Guidelines for Contaminated Soils
specifically developed for gasworks sites in London:
Suggested Range of Values (mg/kg on air-dried soils, except for pH)
| Parameter | Uncontaminated | Slight Contamination | Contaminated | Heavy Contamination | Unusually Heavy Contamination |
|---|---|---|---|---|---|
| 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 |
| Boron (available) | 0-2 | 2-5 | 5-50 | 50-250 | > 250 |
| Barium | 0-500 | 500-1000 | 1000-2000 | 2000-1.0% | > 1.0% |
| Beryllium | 0-5 | 5-10 | 10-20 | 20-50 | > 50 |
| Cadmium | 0-1 | 1-3 | 3-10 | 10-50 | > 50 |
| Chromium | 0-100 | 100-200 | 200-50 | 500-2500 | > 2500 |
| Copper (available) | 0-100 | 100-200 | 200-500 | 500-2500 | > 2500 |
| 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 |
| Lead | 0-500 | 500-1000 | 1000-2000 | 200-10,000 | > 10,000 |
| Lead (available) | 0-200 | 200-500 | 500-1000 | 1000-5000 | > 5000 |
| Mercury | 0-1 | 1-3 | 3-10 | 10-50 | > 50 |
| Manganese | 0-500 | 500-1000 | 1000-2000 | 2000-10,000 | > 10,000 |
| Magnesium | 0-500 | 500-1000 | 1000-2000 | 2000-1.0% | > 1.0% |
| Nickel (available) | 0-20 | 20-50 | 50-200 | 200-1000 | > 1000 |
| PAHs (Coal Tar) | 0-500 | 500-1000 | 1000-2000 | 2000-1.0% | > 1.0% |
| Phenol | 0-2 | 2-5 | 5-50 | 50-250 | > 250 |
| Selenium | 0-1 | 1-3 | 3-10 | 10-50 | > 50 |
| Sulphate | 0-2000 | 2000-5000 | 5000-1.0% | 1.0%-5.0% | > 5.0% |
| Sulphur (free) | 0-100 | 100-500 | 500-1000 | 1000-5000 | > 5000 |
| Sulphide | 0-10 | 10-20 | 20-100 | 100-500 | > 500 |
| Thiocyanate | 0-10 | 10-50 | 50-100 | 100-500 | > 500 |
| Toluene extract | 0-5000 | 5000-1.0% | 1.0-5.0% | 5.0-25.0% | > 25.0% |
| Vanadium | 0-100 | 100-200 | 200-500 | 500-2500 | > 2500 |
| Zinc (available) | 0-250 | 250-500 | 500-1000 | 1000-5000 | > 5000 |
| Zinc (equivalent) | 0-250 | 250-500 | 500-2000 | 2000-1.0% | > 1.0% |
Guidelines for classification of contaminated soils - suggested range of values (parts per million) on air dried soils
Note - added to guidelines after publication of ICRCL 59/83:
Guidance for Heavy Metal Contaminants should be sought from parameters listed in ICRCL 59/83
Source: Site investigation and materials problems, Proc. Conference on Reclamation of Contaminated Land, Eastbourne, UK, October 1979 (Society of the Chemical Industry, London 1980).
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URL: http://www.ContaminatedLAND.co.uk/std-guid/kelly-l.htm [Page created: 11th Nov 65, Last Update: 17h Mar 2000] Copyright ? 1996, Layla Resources Ltd, All Rights Reserved