... Assessment, Of- Webber, M.D., H.R. Rogers, C.D. Watts, A.B.A. Boxall, R.D. Davis,fice of Res. and Development, Washington, DC. and R. Scoffin. 1996. Monitoring and prioritisation of organic con-USEPA. ... BIOSOLIDScism of this method is that selection of single-point esti-mates are subjective and profoundly affect the predic-Summaries of three studies documenting concentra-tion of risk. In addition, ... 1994] for dioxins and furans,listic methods, and uses an array of mathematical simu- and USEPA Method 1668A for PCBs [USEPA, 1999a]),lation models and a wide distribution of input variables.which...