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Phase Il Environmental Site Assessment <br /> Mountain House Neighborhood G <br /> July 9,2002 <br /> Page 10 <br /> 7.2.4 General Hazard Assessment Results <br /> Maximum increased lifetime cancer risk was calculated for each COPC detected at the site. The cancer risk <br /> and hazard quotients associated with each constituent of concern, over soil and air exposure media, and for <br /> all constituents of concern, were summed to obtain the total cancer risk and total hazard index posed by <br /> these constituents at the concentrations indicated in Table 1. The summations are included in Table 3. The <br /> total calculated cancer risk is 4.57E-07, which is less than one in a million. Total hazard, calculated to be <br /> 1.00E-01, is less than unity. <br /> TABLE 3 <br /> Summation of Risk and Hazard Over All Media for All <br /> Constituents Of Concern <br /> Chemical Risk Hazard <br /> gamma-BHC(Lindane) 3.93E-09 3.23E-05 <br /> DDD 8.51E-10 NC <br /> DDE 1.21E-09 NC <br /> DDT 8.77E-10 1.66E-05 <br /> Endosulfan NC 6.17E-06 <br /> Endrin NC 4.08E-05 <br /> Endrin aldehyde NC NC <br /> Heptachlor 2.28E-08 320E-05 <br /> Kepone 4.26E-07 NC <br /> MCPP NC 7.46E-02 <br /> CAzinphos-methyl NC NC <br /> Bolstar NC NC <br /> Chlorpyrifos NC 4.71E-05 <br /> Coumaphos NC NC <br /> Demeton(total) NC 4.99E-03 <br /> Diazinon NC 1.86E-04 <br /> Dimethoate NC 2.26E-03 <br /> Disulfoton NC 6.19E-03 <br /> Ethoprop NC NC <br /> Ethyl parathion NC 2.71E-05 <br /> Famphur NC NC <br /> Fensulfothion NC NC <br /> Fenthion NC NC <br /> Merphos NC 9.77E-03 <br /> Methyl parathion NC 2.02E-03 <br /> Mevinphos NC NC <br /> O,O,O-Triethylphosphorothioate NC NC <br /> Tetrachlorvinphos 1.38E-09 6.04E-06 <br /> Thionazin NC NC <br /> Tokuthion NC NC <br /> Trichloronate NC NC <br /> Summation(PEA) 4.57E-07 I 1.00E-01 <br /> Data based on highest detected concentration of COPC. NC=Not calculated due to lack of toxicity data <br /> A <br /> i�1 CONDOR <br />