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526Water framework directive : guiding principles on the technical requirements (summary) : accompanying summary to the Environment Agency consultation document
527A biological investigation of the affects of discharges from Meldon quarry on the West Okemont River - 8/08/89 and 20/09/89
528An investigation into the bacterial water quality of the River Umber, N. Devon : December 1996 : DEV/WQ/14/96
529An investigation into the elevated BOD levels at Brocken Bridge (R30H001) on the Barnstaple Yeo [DEV/E/20/95]
530An investigation to determine if Great Torrington STW is the cause of elevated copper and zinc concentrations in the River Torridge
531Options for development of an enhanced team culture in the NRA, using the Welsh Regional Technical Department as an example
532A preliminary investigation into the extent of saline ingress into Curry Moor from the River Tone, January 1994
533A report on the infaunal communities within Weston Bay in relation to the sewage outfall at Black Rock
534Bioccumulation of halogenated compounds by limpets and fucoid seaweeds in the vicinity by the Black Rock sewage outfall, Weston-Super-Mare
535Modelling the contribution from non-agricultural sources to nitrate pollution in the Sor Brook (Thames Region) (UC 3134)
536A desk top study into the probable causes of poor water quality at Higher Hollacombe Farm (RO5K013) on the Hollacombe Lake
537Health effects of sea bathing (WMI 9021) - Phase III final report to the Department of the Environment
538Procedure for quality assurance for RIVPACS compatible macro-invertebrate samples analysed to the taxonomic level needed for the BMWP-score system
539Assessment of the Trophic Status of Rivers using Macrophytes - supporting documentation for evaluation of the Mean Trophic Rank
540The Economics of No-Spray Zones - a Study of the Risks and Benefits of Pesticide No-Spray Restrictions
541An audit of performance in the AQC inspection of standard biological macro-invertebrate samples in 2002 : The Environment Agency (C00158/31)
542Analysis of benthic macro-invertebrate samples collected by the NRA during 1989 and 1990 from various habitats in the River Delph
543Biological investigation of the impact of Ivybridge sewage treatment works discharge to the River Erme, May 1991
544Final report of the controlled cohort investigations into the health effects of bathing in sewage contaminated coastal waters
545An investigation to determine the source of high levels of gamma-HCH in the Newlyn River during summer 1989
546An investigation into high concentrations of atrazine in surface waters and the increase in maize production in the Otter valley
547River Habitat Quality the physical character of rivers and streams in the UK and Isle of Man
548Investigation of flow distribution in a fracture zone at the Stripa mine, using the radar method, results and interpretation
549Biosensors for environmental monitoring : a review of capabilities and strategies for the future : consultant's report to the NRA
550An assessment of the causes of non-compliance with river quality standards within the River Tiddy catchment (1989-1991)