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M mwm"m4r <br /> Table 5 <br /> Exposure Parameters for RBCA <br /> Former Safeway Meat Packing Facility, Stockton, California <br /> Industrial/Commerical Comment(s) <br /> Parameter Definition Units RME Average <br /> ATc Averaging Tlma for Carcinogens years 70 70 Based on USEPA definition of averaging time for <br /> carcinogens <br /> AU Averaging Time for years 25 25 Based on USEPA definition of averaging time for <br /> Noncarcmogens noncarcinogens <br /> ED Exposure Duration years 25 25 Default USEPA & DTSC value <br /> BW Body Weight- Adult kg 70 70 Default USEPA & DTSC value <br /> EF Exposure Frequency days/year 250 250 Default USEPA & DTSC value <br /> IRs011 Soil Ingestion Rate mg/day 50 50 Default value from USEPA & DTSC, value assumes workers <br /> get half of their daily sod intake at the work location <br /> IRair-indoor Daily Indoor Inhalation Rate m'3/day 7 1 5 Assumes 8 hourslday at work, values are based USEPA <br /> (1989) typical and reasonable worst case estimates of <br /> indoor breathing rates of 0 63 m"3/hr and 0 89 m"31hr, <br /> respectively <br /> IRair-outdoor Daily Outdoor Inhalation Rate m"31day 24 11 Assumes 8 hours/day at work, values are based on USEPA <br /> (1989) typical & reasonable worst case estimates of <br /> outdoor breathing rates of 1 4 m^3/hr and 3 0 m^3/hr, <br /> respectively <br /> IRw Daily Water Ingestion Rate Llday 1 1 USEPA & DTSC default value, assumes 112 of daily water <br /> obtained at work <br /> M Sod-to-Skin Adherence Factor mglcm"2 05 02 RME value is ASTM, USEPA & DTSC default value for RMI: <br /> case, it is on high-side of adherence per USEPA (19921, <br /> average value is USEPA 11992) recommended average <br /> value for adherence <br /> SA Exposed Skin Surface Area cm"21day 3160 2000 RME value is ASTM default value, average case is USEPA <br /> 11989) value for outdoor exposures with soil adhering to <br /> head and hands <br /> I <br /> x lmarksl$AFEWAY2 XLW Page 1 of 1 2/26196 <br />