Dear David,
BGS have 1,158 analyses of Phosphate (as mono hydrogen phosphate - HPO42-) and elemental Phosphorus in filtered stream waters from East Anglia and SE England. There are more data, however they are yet to be uploaded to the Geochemistry Database. These data might assist with an assessment of what is 'normal' in surface waters (albeit a different geographical area). Feel free to get in touch off-list.
Best wishes,
Darren
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Darren Beriro
Medical Geology
Environmental Modelling
British Geological Survey
Keyworth
Nottingham
NG12 5GG
Direct dial: 0115 936 3479
Swtichboard: 0115 936 3100
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Date: Tue, 21 Apr 2015 14:36:18 +0000
From: Sparks David <[log in to unmask]>
Subject: ammonia and phosphate concentrations in horse paddock
Dear All,
We are handling a complaint regarding discharge from a fairly modern active domestic sewage treatment plant which is connected to a soak away, which is then potentially discharging onto neighbouring land, on which horses graze.
Sampling and analysis of water (to assess whether sewage related) from the neighbouring (complainant's) land and water trough shows concentrations of ammonia and phosphate below actionable limits, and we have advised the complainant that we will not be taking action enforcement action. However, the complainant persists.
Does anyone know of 'normal' or 'average' concentrations of ammonia and phosphate one would expect to find on non-agricultural land, or maximum recommended concentrations for land on which horses graze?
I have tried researching this from sewage sludge angle (Code of Practice etc), but these appear to be primarily concerned with heavy metals and pH. Is the fact that these concentrate on heavy metals indicative that ammonia and phosphate are of less/no concern?
Any help or guidance would be much appreciated. Thank you in advance.
Regards.
David Sparks
Senior Land Quality Officer
Environmental Protection Service
2-10 Carbrook Hall Road
Sheffield
S9 2DB
T: 0114 2734654
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Date: Tue, 21 Apr 2015 20:41:54 +0100
From: Keiron Finney <[log in to unmask]>
Subject: Johannesburg
http://energy.flemingeurope.com/integrated-landfill-engineering-masterclass
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End of CONTAMINATED-LAND-STRATEGIES Digest - 20 Apr 2015 to 21 Apr 2015 (#2015-77)
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