Soil Generic Assessment Criteria for Human Health Risk ... - ESdat

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MTBE CAS 1634-04-4
Cheryl Davies,
Assessor A: Delta-Simons Assessor B: Sian Jones, Entec UK Ltd Final Review: Panel/SF
Date 01/03/2009 Date 27/04/2009 Date 26/08/2009
MDI
Recommended
MDIoral Units
1 ug day-1
Justification: Based on data in UK Energy Institure report (Other). 94% of well fields sampled in UK had less than
detection limit (typically 0.5μg/L). Average intake calculated assuming 0.5μg/L, converted assuming 2L/day consumed.
Food intake assumed negligible.
Organisation Date Media Value Units Description Reference Web link
Drinking Water Inspectorate 23/03/2009 Drinking water 5 to 10 ug l-1 Taste and odour threshold http://www.dwi.gov.uk/consumer/consum http://www.dwi.gov.uk/con
er/mtbe.htm
sumer/consumer/mtbe.htm
Committee on the Medical
Effects of Air Pollutants
(COMEAP)
European Chemicals Bureau
(ECB)
23/03/2009 Drinking water 15 ug l-1 From USEPA Drinking water Advisory odour
detection levels 15 to 180 ug.l-1. Taste 24 to
135 ug.l-1. Threshold for tap water 20 to 40
ug.l-1.
http://www.advisorybodies.doh.gov.uk/co
meap/statementsreports/mtbesupp.htm
2002 Drinking water 15 ug l-1 Odour and taste threshold in tap water. http://ecb.jrc.ec.europa.eu/Documents/Exi
Maximum exposure anticipated within Private stingwells
near petrol stations. No MTBE expected Chemicals/RISK_ASSESSMENT/REPORT/mt
within municipal sources of drinking water. bereport313.pdf
Combined Oral and Inhalation daily exposure
is anticipated to be 21 ug.kg bw-1.d
www.advisorybodies.doh.g
ov.uk/comeap/index.htm
http://ecb.jrc.it/
IPCS Environmental Health
Criteria (EHC) Monographs
1998 Drinking water 20 ug l-1 Concentration within drinking water below