Skaistkalne); 1 hydrological – flow monitoring station – data from LT (Mēmele – Tabokine); Mouth MS: River Lielupe: 1 hydrochemical surveillance MS (Lielupe, 0.5 km below Kalnciems); 1 hydrological – flow monitoring station Oder Transboundary river CZ/DE/PL PL Total area: 118,840 km2 CZ: 6.1 % DE: 4.7 % PL: 89.2% PL: 1 station with hydrological and hydrochemical measurements (Krajnik,71.9 km from the mouth) DE: 2 hydrochemical stations (one of them on PL border), 3 hydrological stations CZ: 1 station with hydrological and hydrochemical measurements (border station, Chalupki 741.9 from the mouth) Neva Transboundary river BY/FI/RU RU Total area: 281,000 km2 BY: 0.3 % FI: 20.2 % RU:79.5 % RU: mouth hydrological station – 27 km from mouth and 4 chemical stations in each branch of Neva river (one-in 1.4 from mouth, three – in 0.025 km from mouth) Pregolya Transboundary river LT/PL/RU RU Total area: 15,500 km2 LT: 0.6 % PL: 51.1 % RU:48.3 % RU: chemical monitoring station -1 km from mouth; hydrological km and includes only nutrient fractions PL: PL: In PLC-5.5 PL were calculated based on data from the river Lyna and Wegorapa with using average flow from years 1994-2003 and 2006)
Table 2. An example of a drop-down menu. At this stage the load / flow reporting will be carried out on an annual basis, but in the future also more detailed reporting might take place. Then total loads and average flows and concentrations could be reported monthly or even on a daily basis. Table 3 below gives an overview of the reporting, i.e., source, type of source and a reference where to report data. Table 3. An overview of the periodic data reporting. SOURCE REPORTING AREAL AND POINT SOURCE INFORMATION FLOW REPORTING LOAD REPORTING RIVER or MONITORED CATCHMENT INDIVIDUAL MON_RIVER_BACKGROUND - MON_RIVER_LOAD UNMONITORED SUBCATCHMENT (by PARAMETER) BY SUBBASIN and PARAMETER UNMON_SUBCATCHMENT_BACKGROUND UNMON_SUBCATCHMENT_BACKGROUND TRANSBOUNDARY SUBCATCHMENT INDIVIDUAL TRANSB_SUBCATCHMENT_BACKGROUND TRANSBOUNDARY_FLOW_LOAD MONITORED STATION of RIVER INDIVIDUAL STATION_BACKGROUND - DIRECT POINT SOURCES of 3 CATEGORIES INDIVIDUAL DIR_POINT SOURCE_BACKGROUND DIR_MUNICIPAL_FLOW_LOAD DIR_INDUSTRIAL_FLOW_LOAD DIR_AQUACULTURE_LOAD INDIRECT POINT SOURCES of 3 CATEGORIES INDIR_POINT SOURCE_BACKGROUND INDIR_MUNICIPAL_FLOW_LOAD INDIR_INDUSTRIAL_FLOW_LOAD INDIR_AQUACULTURE_LOAD AQUACULTURE PRODUCTION INDIVIDUAL AQUACULTURE_PRODUCTION - - MONITORED, UNMONITORED INDIVIDUAL DIFFUSE LOSSES MON_RIVER_BACKGROUND UNMON_SUBCATCHMENT_BACKGROUND - MON_DIFFUSE_SOURCE
SWL = storm water and overflows B: POINT SOURCE LOADS MWL = Municipal INL = Industry AQL = Aquaculture OTL = Other point source load (none of the three categories) PIL = Point source loads from more than one category PUS = Point source unknown load C: TRANSBOUNDARY LOAD -to be left empty D: UNKNOWN LOAD -to be left empty Table 19. Overview of reporting obligations related to load orientated approach. AREA REPORTING LOAD ORIENTATED APPROACH DIFFUSE LOAD POINT SOURCE LOAD**) TRANSBOUNDARY LOAD***) RIVER/MONITORED CATCHMENT INDIVIDUALLY Ntot and Ptot in t/a by source*) Total N and total P t/a by point source load category **) Total N and total P t/a by source RIVERs INDIVIDUALLY Ntot and Ptot in t/a by source*) Total N and total P t/a by point source load category **) Total N and total P t/a by source UNMONITORED AREAS BY SUBBASIN and COUNTRY Ntot and Ptot in t/a by source*) Total N and total P t/a by point source load category **) (*Diffuse loads to be reported separately for agriculture, managed forestry, atmospheric deposition into the fresh water, scattered dwellings, storm water overflows and by-passes and transboundary load (**Point source load categories are: MWWTP, industry, fish farms (*** For transboundary loads both DIFFUSE LOAD and POINT SOURCE LOAD sources should be used, but if not possible then total estimate of transboundary load should be used reported for transboundary/ border river loads In order to ensure a complete coverage of the data collection same areas should be used in reporting the point source loads in the catchments, diffuse losses by source into the fresh water, retention and loads by source finally entering to the Baltic Sea. Table 20. Type and format by attribute and spreadsheet of diffuse losses, retention and loads by source.
4 Convert components to standard uncertainty u(x) u(Rw) = 2.6 % 5 Calculate combined standard uncertainty, uc uc = = 5.2 % 6 Calculate expanded uncertainty, Example B: BOD in wastewater – results of internal quality control and inter-laboratory comparison results (Magnusson et al, 2004) Estimation of uncertainty was based on the results obtained in internal quality control and in participating in Inter-laboratory comparisons. Step Action Example: BOD in wastewater 1 Specify Measurand BOD in wastewater, measured with EN1899-1 (method with dilution, seeding and ATU). The demand on uncertainty is ± 20 %. 2 Quantify u(Rw) A control sample B possible steps not covered by the control sample A: The control sample, which is a CRM, gives an s of 2.6 % at a level of 206 mg/L O2. s = 2.6 % is also used as s when setting the control chart limits. B: The analysis of the control sample includes all analytical steps after sampling 3 Quantify Method and laboratory bias Data from the Table above (results of comparisons) RMSbias = 3.76 4 Convert components to standard uncertainty u(x) u(Rw) = 2.6 % 5 Calculate combined standard uncertainty, uc uc = % 6 Calculate expanded uncertainty,