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5 <br /> The site wells are all sampled using a submersible pump, which can be difficult 'to decontaminate properly. <br /> Additionally, the occurrence of petroleum hydrocarbon constituents in the site wells is inconsistent with the <br /> remediation history of the site. Therefore, it is the opinion of Brown and Caldwell that the presence of petroleum <br /> hydrocarbons in the site wells is inconclusive and may be the result of sampling equipment contamination. <br /> ATTACHMENTS: <br /> Figure 1. Groundwater Elevation Map <br /> Figure 2. Constituent Concentration Map <br /> Table 1. Summary of Groundwater Monitoring Data: Water Elevations and Analyses <br /> Table 2. Historical Flow Directions and Gradients <br /> Appendix A. Field Data Sheets, Laboratory Reports,and Chain-of-Custody Documentation <br /> �j <br /> Use or disclosure of data continued on this sheet is subject to the restriction specified at the beginning of this document. <br /> 33821RE PORM4THQTR96.DOC <br />