directly useful in risk assessment can be obtained for many chemicals 

 from IRIS (see below, Sources of Information and Appendix B). 



TABLE 1. Organic Priority Pollutants and 301(h) Pesticides 



Ranked According to Octanoi-Water Partition Coefllcients 



(Kqw) (updated from Callahan et al. 1979) 



Priority 

 Pollutant 



Substance 



log(Kow) 



Reference 



m 



o 

 i 

 d 



b 



k 



d 



i 



i 



n 



o 



i 



i 



a 



d 

 k 



d 



d 



g 

 d 



h 

 d 

 h 



d 

 b 

 f 

 d 

 m 



k 

 b 

 b 

 P 



16 



