sand/gravel Playing on grass 1 hrs/d Playing on dirt 0.8 hrs/d Time spent 23 hr/year Average value. Upper estimate not available (Section 6.2.4.3) swimming See Footnote (a) to Table E1. For screening risk assessments and establishing guidelines the most sensitive receptor is assumed to be a 2–3 year old (Table E5) or a 1–2 year old (Table E6). Values Table E6: Summary of suggested exposure factors for 1–2 year old child (male and female combined). are average or 95th percentile (in parenthesis) Parameter Suggested default Units Comment and internal reference Anatomical and physiological parameters Body weight (13) kg Section 2.2.4 Body height 81 (86) cm Section 2.1.4 Dermal exposure parameters Total skin surface 5,300 (6,100) cm2 Section 3.2.4. See Table 3.2.5 for specific body part data. area Exposed skin 1,600 (1,900) cm2 Section 3.2.3, 3.2.4 surface area Oral exposure parameters Drinking water intake 0.3 (0.9) L Tap water intake. Includes water used in food preparation (Section 4.2.3). Food intake 720 (1,700) g/day For intakes of individual food groups, see section 4.4.4. (excludes beverages except for milk) Soil ingestion 50, mg/day Central tendency for outside soil. (100), (Reasonable maximum, outside soil), [100] [Central tendency outside soil + indoor dust]. (Section 4.5.3) Incidental water 50 (~ average) mL/hr Section 4.6.3 ingestion while 150 (~ upper swimming estimate) Inhalation exposure parameters Inhalation rate 8.0 (12.8) m3/day Section 5.1.3. For specific inhalation rates by activity or for short term exposures, see Section 5.1;Table 5.1.2
sand/gravel Playing on grass 1 hrs/d Playing on dirt 0.8 hrs/d Time spent swimming 23 hr/year Average value. Upper estimate not available (Section 6.2.4.3) See Footnote (a) to Table E1. For screening risk assessments and establishing guidelines the most sensitive receptor is assumed to be a 2–3 year old (Table E5) or a 1–2 year old (Table E6). Table E6: Summary of suggested exposure factors for 1–2 year old child (male and female combined). Values are average or 95th percentile (in parenthesis) Parameter Suggested default Units Comment and internal reference Anatomical and physiological parameters Body weight (13) kg Section 2.2.4 Body height 81 (86) cm Section 2.1.4 Dermal exposure parameters Total skin surface area 5,300 (6,100) cm2 Section 3.2.4. See Table 3.2.5 for specific body part data. Exposed skin surface area 1,600 (1,900) cm2 Section 3.2.3, 3.2.4 Oral exposure parameters Drinking water intake 0.3 (0.9) L Tap water intake. Includes water used in food preparation (Section 4.2.3). Food intake (excludes beverages except for milk) 720 (1,700) g/day For intakes of individual food groups, see section 4.4.4. Soil ingestion 50, (100), [100] mg/day Central tendency for outside soil. (Reasonable maximum, outside soil), [Central tendency outside soil + indoor dust]. (Section 4.5.3) Incidental water ingestion while swimming 50 (~ average) 150 (~ upper estimate) mL/hr Section 4.6.3 Inhalation exposure parameters Inhalation rate 8.0 (12.8) m3/day Section 5.1.3. For specific inhalation rates by activity or for short term exposures, see Section 5.1;Table 5.1.2
w.Aust-Exposure-Factor-Guide.docx