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501Water framework directive : guiding principles on the technical requirements (summary) : accompanying summary to the Environment Agency consultation document
502A biological investigation of the affects of discharges from Meldon quarry on the West Okemont River - 8/08/89 and 20/09/89
503An investigation into the bacterial water quality of the River Umber, N. Devon : December 1996 : DEV/WQ/14/96
504An investigation into the elevated BOD levels at Brocken Bridge (R30H001) on the Barnstaple Yeo [DEV/E/20/95]
505An investigation to determine if Great Torrington STW is the cause of elevated copper and zinc concentrations in the River Torridge
506Options for development of an enhanced team culture in the NRA, using the Welsh Regional Technical Department as an example
507A preliminary investigation into the extent of saline ingress into Curry Moor from the River Tone, January 1994
508A report on the infaunal communities within Weston Bay in relation to the sewage outfall at Black Rock
509Bioccumulation of halogenated compounds by limpets and fucoid seaweeds in the vicinity by the Black Rock sewage outfall, Weston-Super-Mare
510Modelling the contribution from non-agricultural sources to nitrate pollution in the Sor Brook (Thames Region) (UC 3134)
511A desk top study into the probable causes of poor water quality at Higher Hollacombe Farm (RO5K013) on the Hollacombe Lake
512Health effects of sea bathing (WMI 9021) - Phase III final report to the Department of the Environment
513Procedure for quality assurance for RIVPACS compatible macro-invertebrate samples analysed to the taxonomic level needed for the BMWP-score system
514Assessment of the Trophic Status of Rivers using Macrophytes - supporting documentation for evaluation of the Mean Trophic Rank
515The Economics of No-Spray Zones - a Study of the Risks and Benefits of Pesticide No-Spray Restrictions
516An audit of performance in the AQC inspection of standard biological macro-invertebrate samples in 2002 : The Environment Agency (C00158/31)
517Analysis of benthic macro-invertebrate samples collected by the NRA during 1989 and 1990 from various habitats in the River Delph
518Biological investigation of the impact of Ivybridge sewage treatment works discharge to the River Erme, May 1991
519Final report of the controlled cohort investigations into the health effects of bathing in sewage contaminated coastal waters
520River Habitat Quality the physical character of rivers and streams in the UK and Isle of Man
521Investigation of flow distribution in a fracture zone at the Stripa mine, using the radar method, results and interpretation
522Biosensors for environmental monitoring : a review of capabilities and strategies for the future : consultant's report to the NRA
523An assessment of the causes of non-compliance with river quality standards within the River Tiddy catchment (1989-1991)
524Assessment of the feasibility of using image analysis in the oyster embryo-larval development and daphnia magna growth tests
525A review of the quality and status of the Suffolk and Essex estuaries and coastal waters : volume 1 : final draft