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f (. <br /> a <br /> TABLE 11 <br /> HUMAN HEALTH RISK CALCULATIONS <br /> Lockeford Elementary School Expansion Site PEA <br /> i <br /> Chemical E sure Point Concentrations Toxicity Values Health Hazard Estimated Cancer Risk <br /> iSoil Outdoor Air Indoor Air ABS Reference Dose (mgfkgwdayl Slo a Factor mgfkgmdayV Soil Air' Multipathway Soil Air` Multipathway <br /> Metals/Inorganic Constituents (m m3 m m3 unitless Inhalation Source Oral Source Inhalation Source Oral Source HQ HQ HQ Risk Risk Risk <br /> Barium 6881 4.37&07 4437&07 1 ,00&02 1 .40E-04 HEAST 7.00E-02 IRIS NC NC NC NC 1q38&01 1 .99E-03 1 .40E-01 NC NC NC <br /> Chromium total 45.6 3.46E-08 3.46&08 0.00E+00 2.20&06 IRIS 3.00E-03 IRIS 5. 10E+02 OEHHA NC NC 1 ,95&01 1 .01E-02 2.05E-01 NC 2.63E-06 2.63E-06 <br /> Cobalt 201 1 .52E-0B 1 ,52&08 1 ,00&02 5.70E-06 NCEA 100&02 NCEA 9.80E+00 NCEA NC NC 1641 &02 1 .70E-03 1058&02 NC 2.22E-08 2.22E-08 <br /> r <br /> Copper 31 *21 2.37E-08 2.37E-08 1 .00E-02 6.86E-04 OEHHA 4M&02 HEAST NC NC NC NC 1 . 10E-02 2.21E-05 1 . 10E-02 NC NC NC <br /> (1 Lead' 49.2 NA NA NA Human health hazards evaluated usingthe DTSC blood lead model Lead Risk Assessment Sp readsheet Human health hazards evaluated using the DTSC blood lead model Lead Risk Assessment Spreadsheet) <br /> Mercury 00081 6.08E-11 6.08E-11 1 .00&02 2.57&051 OEHHA 3.00E-04 OEHHA NC NC NC NC 3,75&03 1 .51E 06 3,76&031 NC NC NA <br /> Molybdenum 8.4 6.38E-09 6.38E-09 1 .00E-02 NA NA 5000&03 IRIS NC NC NC NC 2.37E-02 NA 2*37&021 NC NC NA <br /> Nickel 77*61 5.90E-08 5.90E-08 1 .00E-02 1 .43E-05 OEHHA 2.00E-02 IRIS 9. 10E01 OEHHA NC NC 5.46E-02 2.64E-03 5,73&021 NC 7.99E-09 7.99E-09 <br /> Vanadium 134 8.89E-08 8.89E 08 1 .00E-02 NA NA 7000&03 HEAST NC NC NC NC 2.70E-01 NA 2.70E-01 NC NC NC <br /> Zinc 126 9.57E-0B9, 57&08 1 .00E-02 1 .00E-01 OEHHA 3.00E-01 IRIS NC NC -N C NC 5.91E-03 6e12&0715.91E 03 NC NC NC <br /> Organic C ounds <br /> Fluoranthene 0.4 3.04E-10 3.04E-10 1 .50E01 4000E-021 ROUTE 4.00E-02 IRIS NC NC NC NC 3.20E-04 4.85E-09 3, 20E-041 NC NC NC <br /> Phenanthrene 3.2 ' 2.43E-09j 2A3&091 1 .50E-01 1IM &O11 OEHHA NA NA NC NC NC NC NA 9.06E-09 9M&091 NC NC NC <br /> Phenol 4A 3. 11E-09 3A 1 E-091 1 .00E-01 5.71E-02 OEHHA 6.00E01 IRIS NC NC NC NC 1 .75E-04 3m48&08 I *75E-041 NC NC NC <br /> TPH-G C8 - C12) 1941 1047&07 ! 1 .47E-071 1 .00E-01 5.70E-02 MA DEP &00&02 MA DEP NC NC NC NC 8.28E-02 1 .65E-06 8o28&02j NC NC NC <br /> TPH-D C13 - C23 28501 2. 17E-06 2, 17E-061 1 .00E W 5.70E-02 MA DEP 4.00E O2 MA DEP NC NC NC NC 1 .82E+001 2.43E-05 1 .82E+001 NC NC ! NC <br /> j TPH-O C24 - C40) 3760 ' 2.86E-061 2.86E-06 1 .00E-01 I NA NA 3.00E-02 MA DEP NC NC NC NC 321 E+00 NA 3.21E+00 NC NC NC <br /> Volatile Or is Co ounds VOCs <br /> Benzene 1 v27&031 1 .87E-07 2. 11E-04 1 .00E-011 1 .70E-03 NCEA 3.00E031 NCEA 1 .00E-01 OEHHA 1 .00E-01 OEHHA 1 .08E-05 ' 7.94E-021 7.94E 02 4.36E-10i 3.15E-06 3.15E46 <br /> Eth (benzene 9. 90E-041- 1 .47E-07 1 .25E-04 1 .00E-01 ! 2.90E-01 IRIS 1 .00E-01 IRIS 3.85E-03 NCEA 3.85E-03 ROUTE 2.54E-07j 2.76E-041 2.76E-04 1 .31E-11i' 7. 18E-08 7. 18E-08 <br /> MTBE 6.47E031 3.35E-07 9.81E-05 .93 <br /> 1 .00E-Ot ' 8.60E-01 IRIS 8.60E-01 ROUTE 9. 10E-04 OEHHA 3.30E-03 NCEA 1E-07 ; 7,31 &051 7.33E-05 7.34E-11 ' 1 .33E-081 1 .34E-08 <br /> Toluene 1 .22E-0Z 1 .63E-061 1 .39E-03 1 .00E-011 1 . 10E-01 IRIS 2.00E 01 IRIS NC NC NC NC 1 .57E-061 8.08E-03 8.09E-03 NC NC NC <br /> m, -X lene 5. 54E-031 6.35E07' 4.53E-04 1 .00E-01 2.90E-02 IRIS 7.00E-01 IRIS 1 NC NC NC NC 2.03E-07 ' 1 .00E-021 11 ,00&021 NC NC j NC <br /> o-X lene 1 .77E-03j 2.03E-07 ! 1 , 56&041 1 .00E-01 2.90E-02 IRIS 7.00E 01 IRIS NC NC NC NC 6.49E-08 ' 3.44E-03 364411-031 NC NC NC <br /> 1 I ! <br /> I 1 5.83E+00 1 . 18E 01 5.95E+00 5.23E-10 5.89E-061 5.90E-06 <br /> HI = 5.9 TOTAL RISK = 15.9E-06 <br /> Notes: I I <br /> j Air exposure based on air concentration consisting of ambient inorganic/metals and non-VOC j <br /> {! concentrations, and ambient and indoor air VOC concentrations. <br /> NO = Not present in any samples above detection limits <br /> NA = Not available or not MliGable <br /> ;f ABS = Absorption traction; from Table 2, Appendix A, Preliminary Endangerment Assessment Guidance i <br /> 11` OEHHA = CaVEPA Office of Environmental Health Hazard Assesssment Chronic Inhalation Reference, <br /> Exposure Levels RELs OEHHA 2001 • and OEHHA Cancer Potency Values 1 /30/03. <br /> IRIS = Integrated Risk Information System (http://www.epa.govfiris) <br /> HEAST = Health Effects Assessment Summary Tables FY 1997 Update. EPA-540-13-97-036. National) I <br /> I Center for Environmental AssessmenL Office of Research and Development, July 1997' ! I <br /> I! NCEA = National Center for Environmental Assessment (ht[pJ/cfpub.epa.gov/ncea/cfm) 1 <br /> MA DEP = Massachusetts Department of Environmental Protection. 'Indoor Air Sampling and Evaluation I <br /> Guide.' WSC Policy 002430. April, 2002. Recommended by Thomas F. Booze, Ph.D. , Staff Toxicologist, <br /> Human and Ecological Risk Divsion (HERD), Department of Toxic Substances Control. ! <br /> ROUTE = Route-to-route extrapolation oral to inhalation; inhalation to oral) j <br /> NC = Evidence of noncarcinogenicity or not classifiable as to human carcinogenicity1 <br /> HQ = Hazard uoVent; ratio of the estimated dose to the Reference Dose dose/RtD <br />