5.9 MILK


    This exposure pathway involves contamination of cow milk by feeding the cows contaminated crops and/or water. Default parameter values for the milk ingestion pathway are given in Table 5.9.

TABLE 5.8 Meat Ingestion Parameter Default Values

 
Parameter
 
Definition
 
Units
 
Individual
 
Population
P   areal soil density  
kg/m2
 
240
 
240
Qft   animal feed rate  
kg/d
 
68
 
68
Qwt   animal water rate  
L/d
 
50
 
50
rft   retention fraction  
--(a)
 
0.25
 
0.25
TCft>   growing period  
d
 
60
 
60
THft   holdup time  
d
 
20. 
 
20
TVft   translocation factor  
--
 
0.1
 
0.1
Fmt   intake time fraction   
--
 
1.0
 
1.0
Umt   meat consumption rate  
kg/d
 
0.065
 
0.065
Yft   crop yield  
kg/m2
 
0.7
 
0.7
FImt   irrigation time fraction  
--
 
1.0
 
1.0
lw   weathering constant  
d-1
 
0.0495
 
0.0495
(a) Dash indicates not applicable.


TABLE 5.9 Milk Ingestion Parameter Default Values
         
Default Value
Parameter
 
Definition
 
Units
 
Individual
 
Population
P   areal soil density  
kg/m2
 
240
 
240
Qfk   animal feed rate  
kg/d
 
55
 
55
Qwk   animal water rate  
L/d
 
60
 
60
rfk   retention fraction  
--(a)
 
0.25
 
0.25
TCfk   growing period  
d
 
30
 
30
THfk   holdup time  
d
 
 
4
TVfk   intake translocation factor  
--
 
1.0
 
1.0
Fmk   intake time fraction   
--
 
1.0
 
1.0
Umk   milk consumption rate  
kg/d
 
0.075
 
0.075
Yfk   crop yield  
kg/m2
 
0.7
 
0.7
lw   weathering constant  
d-1
 
0.0495
 
0.0495
FImk   irrigation time fraction  
--
 
1.0
 
1.0
(a) Dash indicates not applicable.