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551Red River, Portreath, Bolingey and Perranporth catchment river water quality classification 1990
552Red River catchment river water quality classification 1991
553Wastewater disinfection field trials (231/4/SW)
5541997 general quality assessment (GQA) and river ecosystem (RE) non-compliance : Devon area
555An investigation into possible causes of poor water quality at Nymphayes Bridge (R30D009) on the Gissage Lake
556An investigation into the bacterial water quality of the River Umber, N. Devon : December 1996 : DEV/WQ/14/96
557An investigation into the elevated BOD levels at Brocken Bridge (R30H001) on the Barnstaple Yeo [DEV/E/20/95]
558An investigation to determine if Deep Moor Landfill Site is causing an impact downstream in the Peagham Stream
559Assessment of the impact of discharges from Meldon Quarry on the water quality of the West Okement River
560Bideford fine screen outfall post scheme appraisal
561Water quality report 1992
562General Quality Assessment (GQA) Devon Area 1994
563Hartland streams river water quality classification 1990
564Hartland streams river water quality classification 1991
565North Devon coast and Lyn catchment river water quality classification 1990
566North Devon coast and Lyn catchment river water quality classification 1991
567Occurrence of cryptosporidium oocysts in river water
568River quality classification 1985-1990 : identification of possible causes of non-compliance with river quality objectives
569River Taw catchment river water quality classification 1990
570River Taw catchment river water quality classification 1991
571River Torridge catchment river water quality classification 1990
572River Torridge catchment river water quality classification 1991
573A report on the infaunal communities within Weston Bay in relation to the sewage outfall at Black Rock
574A report on the River Chew at Chewton Mendip, 6th August 1992
575Discharge consent review for Pen Mill (Yeovil) STW