Sethoxydim Risk Assessment
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- Bu səhifədəki naviqasiya:
- Worksheet D08b
- Worksheet D09a
Worksheet D08b: Consumption of contaminated fish, acute exposure scenarios for subsistence populations following an accidental spill [FishAcHHRA02]. Verbal Description: An individual who relies on caught fish as a major source of protein consumes fish taken from contaminated water shortly after an accidental spill of a fixed amount of a field solution into a pond of a specified depth and surface area. As in the acute drinking water scenario, the concentration in the pond estimated from the concentration in the spilled solution, the volume spilled and the volume of the pond, assuming instantaneous mixing. The concentration in fish is estimated as the product of the concentration in water and the chronic BCF. The dose is calculated as the product of the concentration in the fish and the amount of fish consumed divided by the body weight. Parameters/Assumptions Value Units Source/Reference Surface area of pond [SA] 1000 m 2 N/A Average depth [DPTH] 1 m N/A Volume of pond in cubic meters [VM] 1000 m 3 N/A Volume of pond in Liters [VL] 1000000 L 1 m 3 = 1,000 L Volume of spill [VS] 200 gallons N/A 757 liters 1 gallon = 3.785 Liters Concentrations in spilled solution (C Fld (mg/L) ) Central 3600 mg/L APPL.TYPDR×1000 Lower 560 APPL.LOWDR×1000 Upper 9000 APPL.HI_DR×1000 Concentrations in ambient water (C Wat ): C Fld × VS (Liters) ÷ VL Central 2.7252 mg/L Lower 0.42392 Upper 6.813 Bioconcentration factor (BCF (L/kg fish) ) 1.2 L/kg fish CHEM.BCFT Concentration in fish (C Fish ): C Wat × BCF Central 3.27024 mg/kg fish Lower 0.508704 Upper 8.1756 Body weight (W) 70 kg PUBL.BWM Amount of fish consumed (A) Central 0.77 kg/day PUBL.FNU Lower 0.77 PUBL.FNU Upper 0.77 PUBL.FNU Dose estimates (D): C Fish × A ÷ W Central 3.60e-02 mg/kg bw Lower 5.60e-03 Upper 8.99e-02 WS-35 Worksheet D09a: Consumption of contaminated fish, chronic exposure scenario for recreational fisherman [FishChHHRA01]. Verbal Description: An adult (70 kg male) consumes fish taken from contaminated ambient water for a lifetime. The levels in water are estimated from monitoring data and thus dissipation, degradation and other environmental processes are implicitly considered. As in the chronic drinking water scenario, the concentration in water is calculated as the application rate multiplied by the water contamination rate. The concentration in fish is estimated as the product of the concentration in water and the chronic BCF. The dose is calculated as the product of the concentration in the fish and the amount of fish consumed divided by the body weight. Parameters/Assumptions Value Units Source/Reference Application Rates (R) Central 0.3 lb/acre APPL.Typ Lower 0.09375 APPL.Low Upper 0.375 APPL.Hi Water Contamination Rate (WCR) Central 0.0008 mg/L per AMBWAT.AWT Lower 0.00002 lb/acre applied AMBWAT.AWL Upper 0.0012 AMBWAT.AWU Concentration in Water (C Wat ): R × WCR Central 0.00024 mg/L Lower 0 Upper 0.00045 Bioconcentration factor (BCF) 7 L/kg fish CHEM.BCFCh Concentration in fish (C Fish ): C Wat × BCF) Central 0.00168 mg/kg fish Lower 0.000013 Upper 0.00315 Body weight (W) 70 kg PUBL.BWM Amount of fish consumed (A) Central 0.01 kg/day PUBL.FAT Lower 0.01 PUBL.FAT Upper 0.01 PUBL.FAT Dose estimates (D): C Fish × A ÷ W Central 2.40e-07 mg/kg bw/day Lower 1.88e-09 Upper 4.50e-07 WS-36 Worksheet D09b: Consumption of contaminated fish, chronic exposure scenario for subsistence populations [FishChHHRA02]. Verbal Description: An individual who relies on caught fish as a major source of protein consumes fish taken from contaminated ambient water for a lifetime. The levels in water are estimated from monitoring data and thus dissipation, degradation and other environmental processes are implicitly considered. As in the chronic drinking water scenario, the concentration in water is calculated as the application rate multiplied by the water contamination rate. The concentration in fish is estimated as the product of the concentration in water and the chronic BCF. The dose is calculated as the product of the concentration in the fish and the amount of fish consumed divided by the body weight. Parameters/Assumptions Value Units Source/Reference Application Rates (R) Central 0.3 lb/acre APPL.Typ Lower 0.09375 APPL.Low Upper 0.375 APPL.Hi Water Contamination Rate (WCR) : C ÷ R Central 0.0008 mg/L per AMBWAT.AWT Lower 0.00002 lb/acre applied AMBWAT.AWL Upper 0.0012 AMBWAT.AWU Concentration in Water (C): R × WCR Central 0.00024 mg/L Lower 0 Upper 0.00045 Bioconcentration factor (BCF) 7 L/kg fish CHEM.BCFCh Concentration in fish (C Fish ): C Wat × BCF Central 0.00168 mg/kg fish Lower 0.000013 Upper 0.00315 Body weight (W) 70 kg PUBL.BWM Amount of fish consumed (A) Central 0.081 kg/day PUBL.FNT Lower 0.081 PUBL.FNT Upper 0.081 PUBL.FNT Dose estimates (D): C Fish × A ÷ W Central 1.94e-06 mg/kg bw/day Lower 1.52e-08 Upper 3.65e-06 WS-37 Yüklə 4,8 Kb. Dostları ilə paylaş:
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