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Federal Contaminated Site Risk Assessment In Canada Part I: Guidence on Human Health Preliminary Quantitive Risk Assessment (PQRA

Table 3

Recommended Human Receptors and Their Characteristics for Preliminary Quantitative Risk Assessments
Canadian General Population
Receptor Characteristic	Infant	Toddler	Child	Teen	Adult	Construction Worker	Source
Age	0 – 6 mo.	7 mo.- 4 yr	5 – 11 yr	12 – 19 yr	≥ 20 yr	>20 yr	Health Canada, 1994
Body weight (kg)	8.2	16.5	32.9	59.7	70.7	70.7	Richardson, 1997
Soil ingestion rate (g/d)	0.02	0.08	0.02	0.02	0.02	0.1	CCME, 1996 MADEP, 2002
Inhalation rate (m 3/d)	2.1	9.3	14.5	15.8	15.8	15.8	Richardson, 1997; Allan and Richardson,1998
Water ingestion rate (L/d)	0.3	0.6	0.8	1.0	1.5	1.5	Richardson, 1997
Time spent outdoors (hr/d)	-- 1	-- 1	-- 1	1.5	1.5	8	Richardson, 1997
Skin surface area (cm²)							Richardson, 1997
Hands	320	430	590	800	890	890
Arms (upper and lower)	550	890	1480	2230	2500	2500
Legs (upper and lower)	910	1690	3070	4970	5720	5720
TOTAL	1780	3010	5140	8000	9110	9110
Soil loading to exposed skin (g/cm²/event)							Kissel et al., 1996, 1998
Hands	1x10^-4	1x10^-4	1x10^-4	1x10^-4	1x10^-4	1x10^-3
Surfaces other than hands	1x10^-5	1x10^-5	1x10^-5	1x10^-5	1x10^-5	1x10^-4
Food ingestion² (g/day)							Richardson, 1997
Root vegetables	83	105	161	227	188	NA
Other vegetables	72	67	98	120	137	NA
Fish	0	56	90	104	111	NA
Canadian Native Populations (characteristics not listed should be assumed to be equivalent to those for the general population)
Receptor Characteristic	Infant	Toddler	Child	Teen	Adult		Source
Age	0 – 6 mo.	7 mo.- 4 yr	5 – 11 yr	12 – 19 yr	≥ 20 yr		Health Canada, 1994
Food ingestion² (g/day)							Richardson, 1997
Fish	0	95	170	200	220
Wild game	0	85	125	175	270

In Table 3 above:

1 – Data not available; however, time spent outdoors may be assumed to be equivalent to that of adults if the infant, toddler or child is assumed to be accompanied by a parent or guardian during outdoor activity.

2 – Data are for “eaters only”; those reporting zero (0) intake were excluded from the estimate.

Back to section 2.5.1

Back to section 2.5.3


Last Updated: 2006-02-01		Important Notices