Laserfiche WebLink
{t <br /> 0 <br /> Table 5 <br /> Chemical Half-Life,Biodegradation Rate,and Time Required to Reach Benzene Screening Levet in Groundwater I <br /> k <br /> Biodegradation Rate Screening Time to Reach Screening <br /> Halt-Lite Half-Life (11year)b EPC Level Level(Years) <br /> (hours)' (years) WIL) (Ng1L) <br /> Chemical Low High 11 Low High Actual Low High Actual Low High A Actual <br /> Benzene 240 17,280 0-15 1.02 ND 4.52 0.68 ND 2.1 1 0.17 1.11 ND <br /> Notes: i <br /> r <br /> From Howard e1 al.,1991. Handbook of Environmental Degradation Rates. Lewis Publishers. <br /> �I <br />[F h-0.6931half-life(USEPA,1996a) <br /> Actual=not determined based or current data. <br /> S y: <br /> r, <br /> 1 <br /> 9 t <br /> t I <br /> ii <br /> y <br /> 1. <br /> I <br />