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Lkw� �Ij <br /> LBlatt Commercial Brokerage g <br /> April 30, 1990 <br /> L202/899-7041 <br /> LTABLE 2 <br /> RESULTS OF GROUNDWATER ANALYSES (ppb) <br /> L <br /> MAXIMUM CONTAMINATION LIMIT <br /> L TOTAL TOTAL (drinking water) <br /> BORING LEAD COPPER LEAD COPPER <br /> LMW-1 9 <100 5o 100 <br /> L <br /> Analysis of the groundwater sample collected from MWA revealed the presence of lead at a <br /> Lconcentration of 9 parts per billion (ppb), well below the maximum contaminant limit (MCL) of lead in <br /> drinking water of 50 ppb. Copper was not detected above the method detection limit of 100 ppb in the <br /> Lsample. Copies of the certified analytical results are presented in Appendix III. <br /> LCONCLUSIONS <br /> L Results of the analyses for copper and lead performed on the soil and groundwater samples <br /> collected from SB-1/MW-1 indicate the concentrations detected do not pose an environmental hazard. <br /> None of the concentrations detected in the soil exceed the DHS-established levels to be considered <br /> Lhazardous. Additionally, the concentration of lead detected in the groundwater is not considered <br /> hazardous since it does not exceed its Federally-established drinking water MCL. <br /> L <br /> RECOMMENDATIONS <br /> LSince laboratory analysis indicates there is no environmental hazard with respect to copper and <br /> L lead in the soil or groundwater, Groundwater Technology recommends the monitoring well installed for <br /> this investigation be closed in accordance with all local and State regulations. Furthermore,the drill hole <br /> cuttings, steam cleaning water, and monitoring well purge water generated during the drilling and well <br /> Lsampling operations can be disposed of on site since no hazardous levels of copper or lead were <br /> detected in the samples analyzed. At the request of Blatt Commercial Brokerage, Groundwater <br /> t <br /> L ❑E® GROUNDWATER <br /> L ❑E❑ TECHNOLOGY,INC. <br />