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GEOCHECK@ - PHYSICAL SETTING SOURCE MAP FINDINGS <br /> RADON <br /> AREA RADON INFORMATION <br /> Federal EPA Radon Zone for SAN JOAQUIN County: 3 <br /> Note: Zone 1 Indoor average level > 4 pCi/L. <br /> : Zone 2 indoor average level >= 2 pCYL and <= 4 pCi/L. <br /> : Zone 3 indoor average level < 2 pCl/L. <br /> Federal Area Radon Information for SAN JOAQUIN COUNTY, CA <br /> Number of sites tested: 20 <br /> Area Average Activity % <4 pCi/L % 4-20 pCi/L % >20 pCI/L <br /> Living Area - 1st Floor 2.530 pCi/L 90% 10% 0 <br /> Living Area - 2nd Floor Not Reported Not Reported Not Reported Not Reported <br /> Basement 2.050 pCi/L 100% 0% 0% <br /> TC4755450.2s Page A-53 <br />