Table 5

Results from Local Authority and Environment Agency long term monitoring: July 1998 to February 2000

Media/chemical		Units		Standards		Highest recorded sampling result
Media/chemical		Units		UK soil⁶and drinking water⁷	Dutch soil⁷ and WHO drinking water⁸	Highest recorded sampling result
Sediment:
Total PAHs	mg/kg	50^5-150	40^5-151	1.6
Phenol	mg/kg	5^5-152	40	0.42
Ammonia	mg/kg	—	—	5.83
Total cyanide	mg/kg	250^5-153	50^5-154	2.8
Arsenic		10^5-160, 40^5-164	55	16.7
Seawater:
Total PAHs	mg/l	0.0002^5-161	—	0.002806
Phenol	mg/l	0.0005	—	0.000392
Ammonia	mg/l	0.5	1.5^5-162	0.536
Total cyanide	mg/l	0.05 (free)	0.07 (free)	0.046
Arsenic	mg/l	0.05	0.01	—
Seepage water:
Total PAHs	mg/l	0.0002^5-161	—	0.014
Phenol	mg/l	0.0005	—	0.015
Ammonia	mg/l	0.5	1.5^5-162	0.15
Total cyanide	mg/l	0.05 (free)	0.07 (free)	0.7
Arsenic	mg/l	0.05	0.01	0.15

Numbers in bold indicate recorded concentrations that are above the specified standards.
↵5-150 For domestic gardens, allotments, play areas.
↵5-151 Total PAHs=sum of anthracene, benzo(a)anthracene, benzo(a)fluoranthene, benzo(a)pyrene, chrysene, phenanthrene, fluoranthene, indeno(1,2,3-cd)pyrene, naphthalene, and benzo(ghi)perylene.
↵5-152 For domestic gardens, allotments.
↵5-153 Complex cyanide, for domestic gardens, allotments.
↵5-154 Complex cyanide (pH >5).
↵5-160 For domestic gardens, allotments.
↵5-164 For parks, playing fields, open space.
↵5-161 Sum of fluoranthene, benzo(b)fluoranthene, benzo(k)fluoranthene, benzo(a)pyrene, benzo(ghi) perylene, and indeno(1,2,3-cd)pyrene.
↵5-162 Set for customer complaints for odour and taste. No health based guideline value.