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226Rising groundwater levels in the chalk-basal sands aquifer of the Central London Basin. Progress report, March 1995
227Tributyltin in the aquatic environment : final report to the National Rivers Authority September 1990 to September 1992
228Report on the quality of bathing waters in Hampshire, Sussex, Kent and the Isle of Wight : 1992 bathing season
229Guidance notes for local planning authorities on the methods of protecting the water environment through development plans
230The development of biomanipulation techniques and control of phosphorus release from sediments (475/1/A) : LIFE project : restoration of the Norfolk Broads
231The application of toxicity-based criteria for the regulatory control of wastewater dicharges Response compendium March 1997
232Preliminary modelling of water storage and transfers in the Anglian region : supporting documentation for the regional water resources strategy May 1993
233Continuous water quality monitoring results collected from the river Torridge at Cockshilhay and Beam Bridge for the EU UWWTD
234Water quality objectives: procedures used by the NRA for the purpose of surface waters river ecosystem) (classification) regulations 1994
235Second interim report on the environmental impacts of the drought on Yorkshire's rivers April 1995 to April 1996
236Interim report on the environmental impacts of the drought on Yorkshire rivers April 1995 to April 1996
237River Darent low flow alleviation. Annex 3 : plan for the Darent : report of the joint NRA/TWUL project team
238An assessment of the impact of Berkhamsted and Maple Lodge STWs on the Grand Union canal based on macroinvertebrate surveys
239Water framework directive : guiding principles on the technical requirements (summary) : accompanying summary to the Environment Agency consultation document
240A biological investigation of the affects of discharges from Meldon quarry on the West Okemont River - 8/08/89 and 20/09/89
241An investigation into the bacterial water quality of the River Umber, N. Devon : December 1996 : DEV/WQ/14/96
242An investigation into the elevated BOD levels at Brocken Bridge (R30H001) on the Barnstaple Yeo [DEV/E/20/95]
243A preliminary investigation into the extent of saline ingress into Curry Moor from the River Tone, January 1994
244A report on the infaunal communities within Weston Bay in relation to the sewage outfall at Black Rock
245Modelling the contribution from non-agricultural sources to nitrate pollution in the Sor Brook (Thames Region) (UC 3134)
246A desk top study into the probable causes of poor water quality at Higher Hollacombe Farm (RO5K013) on the Hollacombe Lake
247Health effects of sea bathing (WMI 9021) - Phase III final report to the Department of the Environment
248Procedure for quality assurance for RIVPACS compatible macro-invertebrate samples analysed to the taxonomic level needed for the BMWP-score system
249Assessment of the Trophic Status of Rivers using Macrophytes - supporting documentation for evaluation of the Mean Trophic Rank
250The Economics of No-Spray Zones - a Study of the Risks and Benefits of Pesticide No-Spray Restrictions