476 | Water framework directive : guiding principles on the technical requirements (summary) : accompanying summary to the Environment Agency consultation document |
477 | A biological investigation of the affects of discharges from Meldon quarry on the West Okemont River - 8/08/89 and 20/09/89 |
478 | An investigation into the bacterial water quality of the River Umber, N. Devon : December 1996 : DEV/WQ/14/96 |
479 | An investigation to determine if Great Torrington STW is the cause of elevated copper and zinc concentrations in the River Torridge |
480 | Options for development of an enhanced team culture in the NRA, using the Welsh Regional Technical Department as an example |
481 | A preliminary investigation into the extent of saline ingress into Curry Moor from the River Tone, January 1994 |
482 | A report on the infaunal communities within Weston Bay in relation to the sewage outfall at Black Rock |
483 | Bioccumulation of halogenated compounds by limpets and fucoid seaweeds in the vicinity by the Black Rock sewage outfall, Weston-Super-Mare |
484 | Modelling the contribution from non-agricultural sources to nitrate pollution in the Sor Brook (Thames Region) (UC 3134) |
485 | A desk top study into the probable causes of poor water quality at Higher Hollacombe Farm (RO5K013) on the Hollacombe Lake |
486 | Health effects of sea bathing (WMI 9021) - Phase III final report to the Department of the Environment |
487 | Procedure for quality assurance for RIVPACS compatible macro-invertebrate samples analysed to the taxonomic level needed for the BMWP-score system |
488 | Assessment of the Trophic Status of Rivers using Macrophytes - supporting documentation for evaluation of the Mean Trophic Rank |
489 | An audit of performance in the AQC inspection of standard biological macro-invertebrate samples in 2002 : The Environment Agency (C00158/31) |
490 | Analysis of benthic macro-invertebrate samples collected by the NRA during 1989 and 1990 from various habitats in the River Delph |
491 | Biological investigation of the impact of Ivybridge sewage treatment works discharge to the River Erme, May 1991 |
492 | Final report of the controlled cohort investigations into the health effects of bathing in sewage contaminated coastal waters |
493 | An investigation to determine the source of high levels of gamma-HCH in the Newlyn River during summer 1989 |
494 | River Habitat Quality the physical character of rivers and streams in the UK and Isle of Man |
495 | Investigation of flow distribution in a fracture zone at the Stripa mine, using the radar method, results and interpretation |
496 | Biosensors for environmental monitoring : a review of capabilities and strategies for the future : consultant's report to the NRA |
497 | Assessment of the feasibility of using image analysis in the oyster embryo-larval development and daphnia magna growth tests |
498 | An investigation into the frequency of discharge of three combined sewer overflows in the Afan/Kenfig catchment : TM/EAW/96/06 |
499 | NRA report of the blue-green algal monitoring 1990 : a report by the toxic blue-green algae task group |
500 | Options for transfer of water from the River Trent and reservoir storage at Great Bradley : technical summary of the feasibility report |