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QUARTERLY GROUNDWATER SAMPLING(05/02/91)RESULTS: (ug/L) <br /> Well Ethyl- TPH Historical <br /> No. Benzene Toluene benzene Xylenes Gasoline Trend <br /> RW4 16,000 34,000 4,200 22,000 110,000 Decreased <br /> IW1 150 25 230 520 2,500 Unchanged <br /> P1 340 5 430 520 3,700 NA <br /> P2 140 13 650 610 5,400 NA <br /> V1 20,000 49,000 4,700 25,000 130,000 NA <br /> V3 1,900 30,000 5,200 26,000 110,000 NA <br /> V4 31,000 58,000 5,700 29,000 200,000 NA <br /> FREE PHASE PRODUCT RECOVERY SUMMARY: <br /> Product recovered this quarter: NA <br /> Cumulative product recovered: NA <br /> WORK TO BE PERFORMED NEXT QUARTER: <br /> Groundwater will be sampled, and the samples will be analyzed for petroleum hydrocarbons. <br /> August 1991 <br /> The permits to install and operate a combined soil vapor and groundwater extraction system <br /> will be acquired. The design of the system will be modified to be built in and around a <br /> building proposed for the site. Construction of the system will proceed as permits are acquired <br /> and when an agreement with the land owners is reached concerning construction on the site. <br /> August 1991 <br /> WORK TO BE PERFORMED NEXT 12 MONTHS: <br /> Regular monitoring and sampling will continue. <br /> The combined soil vapor and groundwater extraction and treatment systems will be installed, <br /> constructed, and operated. <br />