26 | Biological assessment of the effects of Ivybridge Sewage Treatment Works on the River Erme |
27 | Assessment of Ivybridge mobile monitoring station and investigation of the water quality of the River Erme and the effect of Ivybridge Sewage Treatment works final effluent |
28 | Meiofaunal assemblages of the Thames Estuary, April 1989-March 1990 : modules I-III : a study of the meiofaunal communities present in sediment samples collected by the National Rivers Authority, Thames Region |
29 | An estimated map of NO2 concentration in the Midlands region : a report produced for the Environment Agency |
30 | Report on the quality of bathing waters in Hampshire, Sussex, Kent and the Isle of Wight : 1992 bathing season |
31 | The application of toxicity-based criteria for the regulatory control of wastewater dicharges Response compendium March 1997 |
32 | Continuous water quality monitoring results collected from the river Torridge at Cockshilhay and Beam Bridge for the EU UWWTD |
33 | Second interim report on the environmental impacts of the drought on Yorkshire's rivers April 1995 to April 1996 |
34 | Interim report on the environmental impacts of the drought on Yorkshire rivers April 1995 to April 1996 |
35 | An investigation into the bacterial water quality of the River Umber, N. Devon : December 1996 : DEV/WQ/14/96 |
36 | An investigation to determine if Great Torrington STW is the cause of elevated copper and zinc concentrations in the River Torridge |
37 | A desk top study into the probable causes of poor water quality at Higher Hollacombe Farm (RO5K013) on the Hollacombe Lake |
38 | Assessment of the Trophic Status of Rivers using Macrophytes - supporting documentation for evaluation of the Mean Trophic Rank |
39 | Biosensors for environmental monitoring : a review of capabilities and strategies for the future : consultant's report to the NRA |
40 | NRA report of the blue-green algal monitoring 1990 : a report by the toxic blue-green algae task group |
41 | Recommendations For The Processing And Presentation Of Groundwater Quality Data |
42 | Quality audit of biological samples for the 1991 river quality survey |
43 | Pesticides in the aquatic environment 1997 full report |
44 | Charging for discharges scheme : guidance to the agricultural industry |
45 | Guidance for estimating the air quality impact of stationary sources - GN 24 |
46 | The National Centre for Toxic and Persistent Substances |
47 | The groundwater regulations (Bilingual) : Rheoliadau dwr daear (Bilingual) |
48 | River quality in England and Wales : a report of the 1990 survey |
49 | Stream survey and assessment in the Ashford and Folkestone areas |
50 | The 1990 river and estuary classification survey of England and Wales |