Laserfiche WebLink
TABLE 7 <br /> Comparison of Site-Specific Concentrations to <br /> Tier 1 Risk-Based Screening Levels (RBSLs) <br /> (Cancer Risk= 1 in a million,Chronic HQ= 1) <br /> Jackpot Food Mart <br /> 14000 East Highway 88, Lockeford California <br /> GROUNDWATER <br /> Groundwater Benzene Toluene Ethyl- 7Xyu' s MTBE <br /> Exposure (uglL) (ug/L) (ug1L) (ug/L) <br /> Pathway Receptor RBSLs" RBSLs RBSLs s RBSLs <br /> ON-SITE COMMERCIAL RECEPTORS <br /> inhalation of vapors commercial 5 340 >S >S > S >S <br /> migrating to outdoor air worker <br /> inhalation of vapors commercial 21 85 000 >S >S 3,700,000 <br /> 1 migrating to indoor air worker <br /> Maximum Site Concentration 2,200 12 500 2200 10 300 126 <br /> OFF-SITE RESIDENTIAL RECEPTORS <br /> inhalation of vapors residential 3 190 >S >S > S >S <br /> Migrating to outdoor air <br /> inhalation of vapors residential 69 32 800 77,500 > S 1,400,000 <br /> migrating to indoor air <br /> Maximum Site Boundary Concentration 388 494 100 898 126 <br /> (wells MW-4 MW-5 MW-8 and MW-10) <br />' Explanation <br /> BOLD=Site-specific concentration exceeds one or more RBSLs <br /> '= Benzene RBSLs have been adjusted(multiplied by 0 29)for California's 0 1 slope factor <br /> **=RBSLs are from EPA Region Ili, Risk Based Concentration Table,April 15 1998 <br /> RES=Selected risk level is not exceeded for pure compound in any concentration <br /> >S=Selected risk level is higher than solubility of pure compound <br />' rbsisone As <br /> Page 2 of 2 <br />