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16 <br /> as free product was or has ever been observed in any well <br /> The change in groundwater gradient and direction are indicative of the influence of the Deep Water <br /> Channel, which is 1200 feet northeast of the site <br />' The following is a comparison of the February 14, 2001 groundwater sample results to the previous <br /> quarter, dated September 14, 2000 <br /> In monitoring well MW3-1, benzene and xylenes were lower in concentrations as compared to <br /> last quarter concentrations and toluene, ethylbenzene, and TPHg were higher in concentrations <br />' No MTBE was detected <br /> In monitoring well MW3-2, benzene, toluene, xylenes, and TPHg were higher in concentrations <br /> as compared to last quarter concentrations and ethylbenzene concentrations were lower No <br /> MTBE was detected <br /> In monitoring well MW3-3, benzene was lower in concentration as compared to last quarter <br /> concentrations and toluene, ethylbenzene, xylenes, and TPHg were higher in concentrations <br /> No MTBE was detected <br /> CONCLUSION <br /> S/RECOMMENDATIONS <br /> Based on a review of the analytical results of the groundwater samples of MW34 through MW3-3 <br /> for BTEX and TPHg, the following conclusions are presented <br /> Free phase petroleum product has not been detected in any of the wells on the site <br /> • In general, most of the targeted analytes had an increase in concentrations <br />' . A survey of domestic, municipal, agricultural, industrial and other supply wells within a <br /> 2,000-foot radius of the site has been conducted No municipal or drinking water supply <br /> wells were identified within the 2000-foot radius <br /> iThe following recommendations are presented for this site <br /> • The Port has completed six quarters of ground water monitoring for this site The Port will <br /> continue to perform one more quarterly groundwater monitoring Purging of the wells will be <br /> done by a vacuum truck hooked to dedicated one-inch diameter"Stinger pipes" This is to <br /> facilitate purging of sufficient volumes of well water prior to sampling, as well as eliminate on- <br /> site storage of purge water drums <br /> • The Port will continue to evaluate viable options (e g , risk assessment, etc) toward the final <br /> closure of this site <br /> tW stte3 gtr6 doc 6 <br />