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Establishment of a basis for administrative use of PestSurf

Table 7.5. Part of the result sheet generated by the PestSurf Excel sheet for pendimethalin application during spring. The selected table shows the point along the stream with the highest concentration recorded. The detection limit is 10 ng/l, toxicity to fish is set to 100 ng/l. toxicity to daphnies and algae are set to 1000 and 10000 ng/, respectively. The recorded peaks are shown in Figure 7.13.
Tabel 7.5. Uddrag af resultatpresentationen genereret af PestSurf-Excel-arket for forårsudbragt pendimethalin. Den udvalgte tabel viser det fordefinerede punkt langs med åen med højest koncentration. Detektionsgrænsen er sat til 10 mens toxicitetsværdierne for fisk, dafnier og alger er henholdsvis 100, 1000 og 10000 ng/l. De tabellerede hændelser er vist i Figur 7.13.

ODDERBAEK 1584.119-3818.000; Chainage: 1621.059570; EumType: Concentration
Lowest Detection Concentration = 10
 
Year Date Event Max Conc. Values on descending limb - after Duration before max Duration total Interval to next event
6 min 12 min 30 min 60 min 12 hours 24 hours 48 hours
ng/l ng/l ng/l ng/l ng/l ng/l ng/l ng/l hours hours days
1998 01-05-1998 08:33:00 1 5424 5391 5351 5169 4261 16     0 18 365
1999 01-05-1999 08:33:00 2 4809 4759 4690 4308 2983       0 9 366
2000 01-05-2000 08:33:00 3 5448 5435 5417 5299 4401 15     0 17 365
2001 01-05-2001 08:33:00 4 5592 5581 5563 5475 4836 21     0 22 365
2002 01-05-2002 08:33:00 5 5152 5133 5103 4882 3740 11     0 14 365
2003 01-05-2003 08:33:00 6 4673 4612 4534 4124 2772       0 7 366
2004 01-05-2004 08:33:00 7 5335 5320 5304 5181 4237 14     0 16 365
2005 01-05-2005 08:33:00 8 5519 5501 5479 5386 4727 20     0 21  
Max     5592                 22 366
Min     4673                 7 365
Events with c > lowest effect value (fish)                    
    8                      
Events with c > lowest effect value (daphnies)                    
    8                      
Events with c > lowest effect value (algae)                    
    0                      
Fractiles                        
80%     5519 (min 5 values)             21 366
90%       (min 10 values)                
95%       (min 20 values)                

 

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Version 1.0 December 2006, © Danish Environmental Protection Agency