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• PrTminary Environmental Assessment Report <br /> Pittman Elementary School,Stockton,CA <br /> December 10,2003 <br /> Page 16 <br /> • Table 10—Laboratory Analytical Results pructure Dri line —Paint Chip Samples <br /> Constituent: Lead in aint <br /> Analytical Method: EPA Method SW846-3050-7420 <br /> DHS Lead-Based Paint: 5,000 Vpm <br /> Sample ID Date <br /> 3638F-NWall-W-3' 8/20/2003 298,086 <br /> 3638F-WWall-3' 8/20/2003 699 <br /> 3638F-NWall-E-3' 8/20/2003 1,480 <br /> ppm:parts per million,milligrams per kilogram <br /> 7.3 NATURAL GAS FIELD RESULTS <br /> The laboratory analytical results indicate that methane was detected in all of the soil gas samples at levels <br /> well below the lower explosive limit of 5%. However, hydrogen sulfide was not detected in any of the <br /> soil gas samples. Laboratory analytical results of the discrete samples analyzed for metals are <br /> summarized in Table 11, on the next page. Laboratory report sheets indicating analytical methods used, <br /> detection limits, and the results of the analyses are included in Appendix B. <br /> • <br /> • <br /> i, CONDOR <br />