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The monitoring well P-2 located approximately three feet to the west of the excavation was developed by the use of a surge block and subsequent purging on January 16, 1992 The two existing wells (MW-1 and P-2) were sampled on January 17, 1992. Prior to sampling, the wells were tested for the presence of floating product by the use of oil and water gauging pastes that react to the presence of hydrocarbons and water No evidence of floating product was found in either well Monitoring wells were sampled after purging of the well Purging was performed ' until temperature, pH, and conductivity of the purge water stabilized (approximately five casing volumes) Groundwater samples were placed with minimal agitation into laboratory provided sample vials The vials were labelled ' and placed in a cooler containing blue ice and were transported under chain of custody to BAFS for testing for TPH as diesel and BTEX In addition, a QA/QC travel blank prepared by BAPS was carried with the sample containers and samples and was subsequently analyzed for BTEX Copies of the analytical data sheets and chain of custodies are included in Appendix B ' Analytical results reported non-detectable levels of TPH as diesel and BTEX exist in the groundwater at MW-1 and P-2 The results are summarized on Table 1 1 ' 5.0 CONCLUSIONS On the basis of the confirmation analytical results, BAI concludes that petroleum hydrocarbons have been removed from the soil above the groundwater with the exception of the small localized area below the restroom near soil sample SW-13 Degradation of the groundwater was substantiated by the presence of floating product in seep water within the excavation Groundwater degradation was ' determined based on the results of the well monitoring to be localized within the area of the UST excavation. 6.0 RECOMMENDATIONS ' Recommendations will be prepared for submittal as a separate document. 7.0 STATEMENT OF QUALIFICATIONS r ' Tlus project was managed by Michael Velzy under the direct supervision of Dr Thomas Brunsing, a Registered Civil Engineer (# 39434) in the state of California. The final report of remediation is certified by Dr Bruning J 5 ' BRUNSING ASSOCIATES, INC.